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HomeMy WebLinkAbout2014.06.16 Council Meeting PacketAGENDA PASCO CITY COUNCIL Regular Meeting 7:00 p.m. .Tune 16, 2014 1. CALL TO ORDER 2. ROLL CALL: (a) Pledge of Allegiance 3. CONSENT AGENDA: All items listed under the Consent Agenda are considered to be routine by the City Council and will be enacted by roll call vote as one motion (in the form listed below). There will be no separate discussion of these items. If further discussion is desired by Councilmembers or the public, the item may be removed from the Consent Agenda to the Regular Agenda and considered separately. (a) Approval of Minutes: 1. Minutes of the Pasco City Council Meeting dated June 2, 2014 (b) Bills and Communications: (A detailed listing of claims is available for review in the Finance Manager's office.) L To approve claims in the total amount of $3,619,147.57. 2. To approve bad debt write -offs for utility billing, ambulance, cemetery, general accounts, miscellaneous accounts, and Municipal Court (non- criminal, criminal, and parking) accounts receivable in the total amount of $283,530.23 and, of that amount, authorize $205,575.46 be turned over for collection. (c) * Columbia Villas Phase 1 Final Plat (MF #FP2014 -003): 1. Agenda Report from Dave McDonald, City Planner dated June 11, 2014. 2, Columbia Villas Phase 1 — Overview Map. 3. Columbia Villas Phase i — Vicinity Map. 4. Columbia Villas Phase 1 — Final Plat. To approve the final plat for Columbia Villas Phase 1. (d) * Resolution No. 355$, a Resolution accepting work performed by Culbert Construction, Inc., under contract for the PWRF Optimization, Phases 1 & 2 Project. 1. Agenda Report from Mike Pawl ak, City Engineer dated June 11, 2014. 2. PWRF Optimization, Phases 1 & 2 — Vicinity Map. 3. PWRF Optimization, Phases I & 2 — Resolution. To approve Resolution No. 3558, accepting the work performed by Culbert Construction, Inc., under contract for the PWRF Optimization, Phases 1 & 2 Project. (e) * Resolution No. 3559, a Resolution accepting work performed by Big D's Construction of Tri- Cities, Inc., under contract for the Kurtzman Park Splashpad Project. 1. Agenda Report from Mike Pawlak, City Engineer dated June 11, 2014. 2. Kurtzman Park Splashpad -- Vicinity Map. 3. Kurtzman Park Splashpad — Resolution. To approve Resolution No. 3559, accepting the work performed by Big D's Construction of Tri- Cities, Inc., under contract for the Kurtzman Park Splashpad Project. (f) * Resolution No. 3560, a Resolution of the City of Pasco, Washington, appointing an Acting City Manager. 1. Agenda Report from Gary Crutchfield, City Manager dated June 11, 2014. 2. Appointment of Acting City Manager — Proposed Resolution. To approve Resolution No. 3560, appointing an Acting City Manager. (RC} MOTION: I move to approve the Consent Agenda as read. 4. PROCLAMATIONS AND ACKNOWLEDGMENTS: (a) (b) (c) Regular Meeting 2 June 16, 2014 5. VISITORS - OTHER THAN AGENDA ITEMS: (a) (b) (c) 6. REPORTS FROM COMMITTEES AND /OR OFFICERS: (a) Verbal Reports from Councilmembers (b) Finance Manager: General Fund Operating Statement through May 2014. (c) 7. HEARINGS AND COUNCIL ACTION ON ORDINANCES AND RESOLUTIONS RELATING THERETO: (a) Single Family Lots in Multi- Family Zones (MF #CA2014 -003). 1. Agenda Report from Rick White, Community & Economic Development Director dated June 10, 2014. 2. Single Family Lots in Multi - Family Zones - Proposed Resolution. CONDUCT A PUBLIC HEARING (b) Six -Year Transportation Improvement Plan 2015 -2020. 1. Agenda Report from Ahmad Qayoumi, Public Works Director dated June 5, 2014. 2. Six -Year Transportation Improvement Plan 2015 -2020 -Proposed Plan. 3. Six -Year Transportation Improvement Plan 2015 -2020 - Resolution. 4, Six -Year Transportation Improvement Plan 2015 -2020 - Map. CONDUCT A PUBLIC HEARING Resolution No. , a Resolution adopting the revised and extended Comprehensive Street, Storm Drain and Bridge Programs for the City of Pasco. MOTION: I move to approve Resolution No. thereby adopting the City's Six -Year Transportation Improvement Plan for 2015 -2020. 8. ORDINANCES AND RESOLUTIONS NOT RELATING TO HEARINGS: (a) Ordinance No. , an Ordinance of the City of Pasco, Washington amending Title 3 "Revenue and Finance" establishing various fees, defining acceptance of credit cards and establishing procedures for miscellaneous billing. 1. Agenda Report from Dunyele Mason, Finance Manager dated June 2, 2014. 2. Billing & Collection Processes - Proposed Ordinance. MOTION: I move to adopt Ordinance No. , amending Pasco Municipal Code Title 3 establishing various fees, defining acceptance of credit cards and establishing procedures for miscellaneous billing and, further, authorize publication by summary only. (b) Q* Resolution No. , a Resolution approving a Preliminary Plat for Madison Park Planned Density Development. 1. Agenda. Report from Dave McDonald, City Planner dated June 10, 2014. 2. Madison Park - Overview Map. 3. Madison Park - Vicinity Map. 4. Madison Park - Resolution. 5. Madison Park - Preliminary Plat. 6. Madison Park - Report to the Planning Commission, 7. Madison Park - Planning Commission Minutes dated 4117114 and 5115114. MOTION: I move to approve Resolution No. approving the Preliminary Plat for Madison Park. (c) Resolution No. , a Resolution authorizing investment of monies in the Local Government Investment Pool. 1, Agenda Report from Dunyele Mason, Finance Manager dated May 23, 2014. 2. Local Government Investment Pool - Proposed Resolution. 3. Local Government Investment Pool - Prospectus. 4. Local Government Investment Pool - Transaction Authorization Form. MOTION: I move to approve Resolution No. , naming Dunyele Mason as the "authorized individual" to authorize all amendments, changes or alterations to the Local Government Investment Pool Transaction Authorization Form and to acknowledge the terms and conditions of participation as outlined in the prospectus. Regular Meeting 3 June 16, 2014 (d) Resolution No. , a Resolution accepting the Irrigation System Master Plan prepared by MSA Associates. 1. Agenda Report from Ahmad Qayoumi, Public Works Director dated June 5, 2014. 2. Irrigation System Master Plan —Proposed Resolution. 3. Irrigation System Master Plan — Proposed Capital Improvements List. 4. Irrigation System Master Plan — Plan. MOTION: I move to approve Resolution No. , adopting the Irrigation System Master Plan. (e) Resolution No. a Resolution accepting the Comprehensive Sewer Plan prepared by MSA Associates. 1. Agenda Report from Ahmad Qayoumi, Public Works Director dated June 11, 2014. 2. Comprehensive Sewer Plan — Plan. 3. Comprehensive Sewer Plan— Resolution. 4. Comprehensive Sewer Plan — Approval Letter from Department of Ecology. MOTION: I move to approve Resolution No. adopting the Comprehensive Sewer Plan, 9. UNFINISHED BUSINESS: (None) 10. NEW BUSINESS: (a) * 4`" Avenue Block Wall, Project No. C7- ST- 9A- 12 -01: 1. Agenda Report from Mike Pawlak, City Engineer dated June 11, 2014. 2 4`h Avenue Block Wall — Vicinity Map. 3. 4`h Avenue Block Wall — Bid Summary. MOTION: I move to reject all bids for the 4`h Avenue Block Wall project in as much as all of the bids received significantly exceeded the Engineer's estimate and approved project budget. (b) * Waterline Extension — Broadmoor Tank, Project No. C7- WT- 2A- 13 -02: 1. Agenda Report from Mike Pawlak, City Engineer dated June 11, 2014. 2. Waterline Extension - Broadmoor Tank — Vicinity Map. 3. Waterline Extension - Broadmoor Tank — Bid Summary. (RC) MOTION: I move to award the low bid for the Waterline Extension- Broadmoor Tank Project to KBEC, LLC in the amount of $114,757.61 and, further, authorize the Mayor to sign the contract documents. 11. MISCELLANEOUS DISCUSSION: (a) (b) (c) 12. EXECUTIVE SESSION: (a) Litigation (b) (c) 13. ADJOURNMENT. (RC) Roll Call Vote Required Item not previously discussed Q Quasi - Judicial Matter MF# "Master File #...." REMINDERS: 1. 5:00 p.m., Tuesday, June 17, TRAC — TRAC Advisory Board Meeting. (COUNCILMEMBERS REBECCA FRANCIK and AL YENNEY) 2. 9:00 a.m., Wednesday, June 18 — 12:00 p.m., Friday, June 20, Spokane Convention Center — Association of Washington Cities Annual Conference. (COUNCILMEMBERS REBECCA FRANCIK, BOB HOFFMANN and AL YENNEY) 3. 5:30 p.m., Wednesday, June 18 — Benton, Franklin & Walla Walla Counties Good Roads & Transportation Association Meeting. (COUNCILMEMBER BOB HOFFMANN, Rep.; REBECCA FRANCIK, Alt.) 4. 11:30 a.m., Friday, June 20 — Benton - Franklin Council of Governments Board Meeting. (COUNCILMEMBER AL YENNEY, Rep.; REBECCA FRANCIK, Alt.) MINUTES REGULAR MEETING PASCO CITY COUNCIL JUNE 2, 2014 CALL TO ORDER: The meeting was called to order at 7:00 p.m. by Matt Watkins, Mayor. ROLL CALL: Councilmembers present: Rebecca Francik, Mike Garrison, Tom Larsen, Saul Martinez, Matt Watkins. Excused: Robert Hoffmann, Al Yenney. Staff present: Gary Crutchfield, City Manager; Leland Kerr, City Attorney; Stan Strebel, Deputy City Manager; Richard Terway, Administrative & Community Services Director; Rick White, Community & Economic Development Director; Ahmad Qayoumi, Public Works Director; Bob Metzger, Police Chief; Bob Gear, Fire Chief and Mike Pawlak, City Engineer. The meeting was opened with the Pledge of Allegiance. CONSENT AGENDA: Approval of Minutes: Minutes of the Pasco City Council Meeting dated May 19, 2014. Bills and Communications: To approve Claims in the amount of $3,014,167.81 ($1,355,998.62 in Check Nos. 198399 - 198604; $856,073.89 in Electronic Transfer Nos. 800646 - 800693, 800695- 800754, 800756- 800889, 800893 - 800971, 800973 - 801175; $42,411.92 in Check Nos. 46704 - 46751; 900000040 - 900000043; $550,317.41 in Electronic Transfer Nos. 30069136- 30069602; $209,365.97 in Electronic Transfer Nos. 47 -50). Annual Fire Department Performance Report: To accept the Pasco Fire Department 2013 Performance Report. Resolution No. 3554, a Resolution accepting work performed by Premier Excavation, Inc., under contract for the Heritage Industrial Center Primary Lead Track, Phase 2 Project and the Big Pasco Industrial Center Hub Development, Phase 5B Project. To approve Resolution No. 3554, accepting the work performed by Premier Excavation, Inc., under contract for the Heritage Industrial Center Primary Lead Track, Phase 2 and Big Pasco Industrial Center Hub Development, Phase 5B, Project. MOTION: Ms. Francik moved to approve the Consent Agenda as read. Mr. Garrison seconded. Motion carried by unanimous Roll Call vote. PROCLAMATIONS AND ACKNOWLEDGMENTS: Mayor Watkins presented a Proclamation to Chuck DeGooyer, CEO, Tri- Cities Cancer Center, proclaiming June 12, 2014, "Tri- Cities Cancer Center Day ". Mayor Watkins presented Certificates of Appreciation for May 2014 "Yard of the Month" to: Maria Torres, 1408 W. Ainsworth Avenue Linda Erwin, 604 Road 36 Brian & Michelle Sites, 5317 W. Dradie Street Rick & Cindy Rochleau, 3606 Judemein Court Mayor Watkins presented a Certificate of Appreciation for May 2014 "Business Appearance of the Month" to: Roasters Coffee, 7204 Burden Blvd 3(a).1 MINUTES REGULAR MEETING PASCO CITY COUNCIL JUNE 2, 2014 VISITORS - OTHER THAN AGENDA ITEMS: Mr. Mac Miller, Boise Idaho, addressed Council concerning a rock in Volunteer Park. REPORTS FROM COMMITTEES AND /OR OFFICERS: Mr. Martinez reported on a meeting sponsored by the Washington State Commission on Hispanic Affairs attended by Gov. Inslee. He also presented thank you posters from 2nd grade students from Emerson Elementary to Chief Metzger, Chief Gear and Mayor Watkins. Mr. Garrison attended the TRIDEC Board of Directors meeting and the Tri- Cities Visitor and Convention Bureau Board meeting. Mayor Watkins attended a focus group session with the Port of Pasco. ORDINANCES AND RESOLUTIONS NOT RELATING TO HEARINGS: Ordinance No. 4159, an Ordinance of the City of Pasco, Washington, extending the Cable Television Franchise Agreement with Falcon Video Communications, L.P., locally known as Charter Communications, Inc., hereinafter referred to as "Grantee" through September 30, 2014. MOTION: Ms. Francik moved to adopt Ordinance No. 4159, extending the Cable Television Franchise Agreement with Charter Communications (Falcon Video Communications, L.P.) through September 30, 2014 and, further, authorize publication by summary only. Mr. Garrison seconded. Motion carried unanimously. Ordinance No. 4160, an Ordinance of the City of Pasco, Washington, creating a new Section 13.16.012 "Connection Outside City Limits — Water Rights "; amending Section 13.36.070 entitled "Assignment of Water Rights — Extension of Water Services Beyond City Limits "; Creating a new Section 13.36.075 "Installation of Irrigation Lines — Extension of City Water Service Beyond City Limits "; and amending Section 3.07.160 I) "Water Rights Acquisition Fee — per acre." Council and staff discussed the details of the proposed ordinance. MOTION: Ms. Francik moved to adopt Ordinance No. 4160, revising the Water Rights Fee and requiring assignment of water rights for development outside the city and, further, authorize publication by summary only. Mr. Garrison seconded. Motion carried unanimously. Resolution No. 3555, a Resolution assessing abatement expenses as a special lien for 114 N. 4th Avenue, Pasco, Washington. MOTION: Ms. Francik moved to approve Resolution No. 3555, assigning a special assessment as a tax lien against 114 N. 4th Avenue for emergency abatement costs resulting from the structure fire in August of 2013. Mr. Martinez seconded. Motion carried unanimously. Resolution No. 3556, a Resolution establishing a Water Resources Action Plan. Agenda Report from Gary Crutchfield, City Manager dated May 23, 2014. Water Resources Action Plan — Proposed Resolution. MOTION: Ms. Francik moved to approve Resolution No. 3556, establishing a Water Resources Action Plan. Mr. Martinez seconded. Motion carried unanimously. Resolution No. 3557, a Resolution of the City of Pasco, Washington, declaring a moratorium prohibiting platting within the Residential Two, Three and Four Zoning Districts within the City and setting public hearing thereon. 2 MINUTES REGULAR MEETING PASCO CITY COUNCIL JUNE 2, 2014 MOTION: Ms. Francik moved to approve Resolution No. 3557, declaring a moratorium on the submittal of subdivision applications for properties zoned R -2, R -3 and R -4. Mr. Garrison seconded. Motion carried unanimously. NEW BUSINESS: Dual RT SB Lanes — Road 68 and Other Interchange Access Improvements: MOTION: Ms. Francik moved to approve the Professional Services Agreement with Kittelson & Associates authorizing design services with respect to Dual RT SB Lades — Road 68 Project in the amount of $280,000 and, further, authorize the City Manager to sign the agreement. Mr. Garrison seconded. Motion carried 4 -1. No - Larsen. New Police Facility Design, Phase 2: MOTION: Ms. Francik moved to approve the Professional Services Agreement (Phase 2) with Terence L. Thornhill, Architect, for the new Police Facility and, further, authorize the City Manager to sign the agreement. Mr. Martinez seconded. Motion carried 4 -1. No - Larsen. Police Station Financing: MOTION: Ms. Francik moved to authorize staff to prepare for the issuance of bonds to finance the new Police Community Services Building. Mr. Garrison seconded. Motion carried 4 -1. No - Larsen. MISCELLANEOUS DISCUSSION: Mr. Crutchfield updated Council on a citizen's concern about the lack of sidewalks on two properties along Burden Blvd. One property owner has agreed to install sidewalks. ADJOURNMENT: There being no further business, the meeting was adjourned at 7:35 p.m. APPROVED: Matt Watkins, Mayor ATTEST: Debra L. Clark, City Clerk PASSED and APPROVED this 16th day of June, 2014. CITY OF PASCO Council Meeting of: June 16, 2014 Accounts Payable Approved The City Council Cky of Pasco, Franklin County, Washington We, the undersigned, do hereby certify under penalty of perjury that the materials have been furnished, the se s re eyed or the labor performed as described herein and that the claim is a just, due and unpaid obligation against the city and that we are authorized to authenticate and certify to said claim. A-.O -64. /,- A" 'rru'nyele M on, Finance Services Manager We, the undersigned City Councilmembers of the City Council of the City of Pasco, Franklin County, Washington, do hereby certify on this 16 day of June, 2014 that the merchandise or services hereinafter specified have been received and are approved for payment: Claims Bank Payroll Bank Gen'I Bank Electronic Bank Combined Check Numbers 196605- 198629 46752 -46807 900000045 - 900000047 Total Check Amount $864,187.19 $52,605.88 Total Checks $ 916,793.07 Electronic Transfer Numbers 800892, 801176- 801178 30069603- 30070074 53-89 51 -55 801229, 801287, 801374 Total EFT Amount $362,996.04 $587,338.83 $1,596,572.26 $153,447.37 Total EFTS S 2,702,354.50 Grand Total $ 3,619,147,57 Councilmember Councilmember SUMMARY OF CLAIMS BY FUND: GENERAL FUND 348,512.45 STREET 325.05 ARTERIAL STREET 8,742.30 STREET OVERLAY 335.82 C. D. BLOCK GRANT 4,834.15 HOME CONSORTIUM GRANT 33,500.00 NSP GRANT 10,000.00 KING COMMUNITY CENTER 1,428.88 AMBULANCE SERVICE 15,847.32 CEMETERY 9,638.73 ATHLETIC PROGRAMS 3,260.00 GOLF COURSE 18,847,51 SENIOR CENTER OPERATING 3,729.20 MULTI MODAL FACILITY 1,745.09 SCHOOL IMPACT FEE 117,075.00 RIVERSHORE TRAIL & MARINA MAIN 542.84 SPECIAL ASSESSMNT LODGING 19,805.44 99UT LIBIFIRE 16,575.00 REVOLVING ABATEMENT 2,757.24 TRAC DEVELOPMENT & OPERATING 9,373.38 ECONOMIC DEVELOPMENT 11,738.92 STADIUM /CONVENTION CENTER 0.00 GENERAL CAP PROJ CONSTRUCTION 31,484.88 WATER/SEWER 1,710,425.34 EQUIPMENT RENTAL - OPERATING GOVERNMENTAL 24,427.58 EQUIPMENT RENTAL - OPERATING BUSINESS 6,019.93 EQUIPMENT RENTAL - REPLACEMENT GOVERNMENTAL 0.00 EQUIPMENT RENTAL - REPLACEMENT BUSINESS 0.00 MEDICALIDENTAL INSURANCE 181,743.95 OLD FIRE PENSION 11,527.53 PAYROLL CLEARING 1,014,904.04 GRAND TOTAL ALL FUNDS: $ 3,619,147.57 3(b).1 AGENDA REPORT FOR: City Council DATE: June 11, 2014 TO: Gary Crutchfie t anager REGULAR: June 16, 2014 Rick Terway, finis ative & Commu rvices Director FROM: Dunyele Mason, Financial Services Manager", • A SUBJECT: BAD DEBT WRITE -OFF'S /COLLECTION. �W I. II, III. IV REFERENCE (S): Write -off and collection lists are on file in the Finance Department. ACTION REQUESTED OF COUNCIL /STAFF RECOMMENDATIONS: MOTION: I move to approve bad debt write -offs for utility billing, ambulance, cemetery, general accounts, miscellaneous accounts, and Municipal Court (non - criminal, criminal, and parking) accounts receivable in the total amount of $283,530.23 and, of that amount, authorize $205,575.46 be turned over for collection. HISTORY AND FACTS BRIEF: 1. UTILITY BILLING - These are all inactive accounts, 60 days or older. Direct write -offs are under $10 with no current forwarding address, or are accounts in "occupant" status. Accounts submitted for collection exceed $10.00. 2. AMBULANCE - These are all delinquent accounts over 90 days past due or statements are returned with no forwarding address. Those submitted for collection exceed $10.00. Direct write offs including DSHS and Medicare customers; the law requires that the City accept assignment in these cases. 3. COURT ACCOUNTS RECEIVABLE - These are all delinquent non - criminal and criminal fines, and parking violations over 30 days past due, 4. CODE ENFORCEMENT — LIENS — These are Code Enforcement violation penalties which are either un- collectable or have been assigned for collections because the property owner has not complied or paid the fine. There are still liens in place on these amounts which will continue to be in effect until the property is brought into compliance and the debt associated with these liens are paid. 5. CEMETERY — These are delinquent accounts over 120 days past due or statements are returned with no forwarding address. Those submitted for collection exceed $10.00. 6. GENERAL - These are delinquent accounts over 120 days past due or statements are returned with no forwarding address. Those submitted for collection exceed $10.00. ^r. MISCELLANEOUS - These are delinquent accounts over 120 days past due or statements are returned with no forwarding address. Those submitted for collection exceed $10.00. ADMINISTRATIVE ROUTING: cc: Dot French, Municipal Court Clerk 3(b).2 Amount Direct Referred to Total Write -offs Collection Write -offs Utility Billing $ 43.77 1,187.16 1,230.93 Ambulance $ 77,821.00 17,305.64 95,126.64 Court A/R $ .00 183,482.60 183,482.60 Code Enforcement $ 90.00 3,544.06 3,634.06 Cemetery $ .00 .00 .00 General $ .00 56.00 56.00 Miscellaneous $ .00 .00 .00 TOTAL: $ 77,954.77 205,575.46 283,530.23 ADMINISTRATIVE ROUTING: cc: Dot French, Municipal Court Clerk 3(b).2 AGENDA REPORT FOR: City Council j 1 June 11, 2014 TO: Gary Crutchfiel , Manager Regular Mtg.: 6/16/14 Rick White, Community 84 conomic Development Director FROM: David I. McDonald, City Planner SUBJECT: Columbia Villas Phase 1 Final Plat (MF# FP 2014 -003). I. REFERENCE(S): 1. Columbia Villas Phase 1- Overview Map 2. Columbia Villas Phase I - Vicinity Map 3. Columbia Villas Phase 1- Final Plat II. ACTION REQUESTED OF COUNCIL / STAFF RECOMMENDATIONS: 6/16: MOTION: I move to approve the final plat for Columbia Villas Phase 1. III. FISCAL IMPACT: NONE IV. HISTORY AND FACTS BRIEF: A. City Council previously approved a preliminary plat for Columbia Villas. The developer is now seeking final plat approval for Phase 1. B. The Columbia Villas subdivision is a duplex development located west of Road 76 and north of Sandifur Parkway. V. DISCUSSION: A. Prior to approval of a final plat, the developer is to either install all infrastructure or post a bond or other instrument that secures the financing for the necessary infrastructure improvements. In this case, the developer has completed the infiastructure improvements. B. The final plat shows and contains information on primary control points, tract boundaries, dimensions, bearings, lot numbers and other necessary engineering data. In addition, the plat contains the required descriptions, dedication and acknowledgment, and approval sections. 3(c) 68 IRO Ly � � .y° fly ^� • Y� � - fR t k � 7.k5��� ,Y ns{ � It •�.i Y '. `� t � k ROAD 76 ujYf LL W cnr ' J d�• ;�.� ,. "4 •'� • see} 1' '��•. N I 'lV ,...� A�i_..+t° Ld ct � , F Y,�. SAgE�.D CREEK LN M it 0 r"� ;F � ' I? CIO (j .0 �'� `.1 1, ! W.. 40i 'j' LU or f I '� 5i �•� ',. ,.. - �� r -- ,> tea... a, i � ��' Y�,•� ; :t o ^Q�a X1 W KI'l AI/ 61A 4a LU alb g w Al i j g lag 9 � g q Y� g� g� g g� g�+• ' c� �� �i'• �E �yt� 5 � g �� � �g r e a� � a �€ � � aFa p5 6� y�y E�1 � ga ? •aa {[ >6 � Eq� 9 yy 5 E 6 Ell �l q�q @# QjF €s E� �`y �4 tx R� R 9t m it a e bg a �IIaage� H gc! Nth yW Y {1 g}7 s �e E ti a p Y a_ to $A n$9 'j 'lilt, M ' t, Ili 5 o ii828itiz k v s 01-k MIS 11 H ` ins r- - -- -- ��� i = :� r➢ n W t � i � ��a ��� �� €� ; fy�`��.i � }a r— —I ; J _•' <� % .� _ '�; f r f 1g Pik b 1 LLI Hit I X�a 2I Y��hk 4t! ip 9t9 gglg �� 2 LLJ '�IL p� vJ Z O U HIP it M �tiRS � SIEe F �' p J6YHd y � �n AvMxWd a/I9raW�'S 3h� �y� P:� rl•n w,mm mt�ro� g tea., am" 'Sa y�y � � po � p. J - d.f..nsNgYlppwpurl �..4 - -.4[_ _ - - -- __ as�v��syx__ _ _ . e j �;j 1 i iF I' �I I, I L E I k I I I 4 1 A hl FI 1 � Ill I I Wl 1.' N � S so MEN '900 m 0000000 logo D moo m I ull m so MEN '900 m 0000000 D m I ull INE11111 x i i I l 80000 10001 ..Moll x i i I l AGENDA REPORT NO. 15 FOR: City Council June 11, 2014 TO: Gary Crutchfiel4bWorks anager Ahmad Qayoum Director FROM: Michael A. Pawlak, City Engineer tk Regular Mtg.: 6/16/14 SUBJECT: PWRF Optimization, Phases 1 & 2 Proj ect #C7 -SR -1 A -12 -01 I. REFERENCE(S): 1. PWRF Optimization, Phases 1 & 2 — Vicinity Map 2. PWRF Optimization, Phases 1 & 2 — Resolution I1. ACTION REQUESTED OF COUNCIL / STAFF RECOMMENDATIONS: 6/16: MOTION: I move to approve Resolution No. � -- X- accepting the work performed by Culbert Construction, Inc., under contract for the PWRF Optimization, Phases I & 2 Project. III. FISCAL IMPACT: IV ky Debt Service to Food Processors HISTORY AND FACTS BRIEF: A) On February 4, 2013, Council awarded the PWRF Optimization, Phases 1 & 2 project to Culbert Construction, Inc. for $2,072,312.61. DISCUSSION: A) The project involved the installation of approximately 4,300 If of 6 -in, 8-in, 10 -in and 16 -in diameter HDPE SDR 11 pressure sewer pipe; construction of a wastewater fine screenings facility; construction of a 20 -ft x 95 -ft x 10 -ft concrete sedimentation basin; and construction of a solids handling pump station. B) The final project construction contract totalled $2,144,576.33, a difference of $72,263.72 (approximately 3 %). The increase in costs was due to field design changes requested by the City and differing site conditions encountered during construction. C) The work is now complete and staff recommends City Council acceptance of this work. 3(d) C1.4 ow ed �. � Q O �o L L CC CL O P W6 - 1 1. mot,` LL d z RESOLUTION NO. 3S52 A RESOLUTION ACCEPTING WORK PERFORMED BY CULBERT CONSTRUCTION, INC. UNDER CONTRACT FOR THE PWRF OPTIMIZATION, PHASES 1 & 2 PROJECT. WHEREAS, the work performed by Culbert Construction, Inc., under contract for the PWRF Optimization, Phases 1 & 2 project has been examined by Engineering and has been found to be in apparent compliance with the applicable project specifications and drawings, and WHEREAS, it is Engineering's recommendation that the City of Pasco formally accept the contractor's work and the project as complete; NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF PASCO, that the City Council concurs with Engineering's recommendation and thereby accepts the work performed by Culbert Construction, Inc., under contract for the PWRF Optimization, Phases 1 & 2 project, as being completed in apparent conformance with the project specifications and drawings, and Be It Further Resolved, that the City Clerk is hereby directed to notify the Washington State Department of Revenue of this acceptance, and Be It Further Resolved, that the final payment of retainage being withheld pursuant to applicable laws, regulations and administrative determination shall be released upon satisfaction of same and verification thereof by the Public Works Director and Finance Manager. PASSED by the City Council of the City of Pasco this 16th day of June, 2014. Matt Watkins Mayor ATTEST: Debra L. Clark City Clerk APPROVED AS TO FORM: Leland B. Ken City Attorney AGENDA REPORT NO. 14 FOR: City Council TO: Gary Crutchfiel Ahmad Qayoum 4,u0b *anager Works Director FROM: Michael A. Pawlak, City Engineer SUBJECT: Kurtzman Park Splashpad Project #C5- PF- 8R -13 -01 I. REFERENCE(S): 1. Kurtzman Park Splashpad — Vicinity Map 2. Kurtzman Park Splashpad — Resolution .tune 11, 2014 Regular Mtg.: 6/16/14 II. ACTION REQUESTED OF COUNCIL / STAFF RECOMMENDATIONS: 6/16: MOTION: I move to approve Resolution No. 3E 5q accepting the work performed by Big D's Construction of Tri- Cities, Inc., under contract for the Kurtzman Park Splashpad Project. III. FISCAL IMPACT: Community Development Block Grant IV. HISTORY AND FACTS BRIEF: A) On November 4, 2013, Council awarded the Kurtzman Park Splashpad project to Big D's Construction of Tri- Cities, Inc. for $115,534.11. V. DISCUSSION: A) The project involved the demolition of the existing pool, wading pool and pool building, the installation of a splashpad, and improvement of the existing irrigation system at Kurtzman Park. B) The final project construction contract totalled $128,572.63, a difference of $13,038.52 (approximately 10 %). The increase in costs was due to additional work necessary to locate and tie into existing water and sewer services. C) The work is now complete and staff recommends City Council acceptance of this work. 3(e) RESOLUTION NO.� A RESOLUTION ACCEPTING WORK PERFORMED BY BIG D'S CONSTRUCTION OF TRI- CITIES, INC. UNDER CONTRACT FOR THE KURTZMAN PARK SPLASHPAD PROJECT. WHEREAS, the work performed by Big D's Construction of Tri- Cities, Inc., under contract for the Kurtzman Park Splashpad project has been examined by Engineering and has been found to be in apparent compliance with the applicable project specifications and drawings, and WHEREAS, it is Engineering's recommendation that the City of Pasco formally accept the contractor's work and the project as complete; NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF PASCO, that the City Council concurs with Engineering's recommendation and thereby accepts the work performed by Big D's Construction of Tri- Cities, Inc., under contract for the Kurtzman Park Splashpad project, as being completed in apparent confonnance with the project specifications and drawings, and Be It Further Resolved, that the City Clerk is hereby directed to notify the Washington State Department of Revenue of this acceptance, and Be It Further Resolved, that the final payment of retainage being withheld pursuant to applicable laws, regulations and administrative determination shall be released upon satisfaction of same and verification thereof by the Public Works Director and Finance Manager. PASSED by the City Council of the City of Pasco this 16th day of June, 2014. Matt Watkins Mayor ATTEST: Debra L. Clark City Clerk APPROVED AS TO FORM: Leland B. Kerr City Attorney TO: City Council FROM: Gary AGENDA REPORT Manager SUBJECT: Appointment cif Acting City Manager I. REFERENCE(S): June 11, 2014 Regular Mtg.: 6/16/14 1. Appointment of Acting City Manager — Proposed Resolution II. ACTION REQUESTED OF COUNCIL / STAFF RECOMMENDATIONS: 6/16: MOTION: i move to approve Resolution No. 3-45W appointing an Acting City Manager, III. FISCAL IMPACT: N/A IV. HISTORY AND FACTS BRIEF: A) With my retirement as City Manager effective June 27, 2014 and a new City Manager not yet in place, the appointment of an Acting City Manager is prudent, both from a legal and operational standpoint. B) Stan Strebel, Deputy City Manager is qualified and willing to serve as Acting City Manager until the new City Manager assumes his duties. I recommend Stan's appointment, per the attached resolution. V. DISCUSSION: A) Stan has indicated a willingness to serve for a period of up to 60 days without additional compensation. In the event that the term for his service as Acting City Manager extends beyond 60 days, Council should consider what additional compensation is warranted. 3(f) RESOLUTION NO. A RESOLUTION of the City of Pasco, Washington, appointing an Acting City Manager. WHEREAS, the City Council of Pasco, Washington, has received the retirement notice of City Manager, Gary Crutchfield to be effective June 27, 2014 at 5:00pm; and WHEREAS, it would benefit the City of Pasco to appoint an Acting City Manager to perform the duties of the City Manager serving at the pleasure of the City Council or until a new City Manager is retained; and WHEREAS, the City Council is authorized pursuant to RCW 35A.13.150 to designate a qualified administrative officer of the City to perform the duties of a City Manager during the absence of the City Manager; NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF PASCO, WASHINGTON, RESOLVES AS FOLLOWS: Section 1. The City Council of the City of Pasco hereby appoints Stan Strebel to serve as the Acting City Manager, effective June 27, 2014 at 5:01pm, pending the selection and appointment of a new City Manager. Section 2. During this appointment, the Acting City Manager shall continue to perform his regular duties as Deputy City Manager. In the event that the appointment as Acting City Manager continues for a period exceeding 60 days, he shall be paid such additional compensation by the City as shall be determined by further action of the City Council. THIS RESOLUTION shall be effective upon passage, approval and signatures hereon as required by law. PASSED by the City Council of the City of Pasco this 16th day of June, 2014 CITY OF PASCO: Matt Watkins, Mayor ATTEST: Debra Clark, City Clerk Leland B. Kerr, City Attorney REVENUE SOURCES TAXES: PROPERTY SALES PUBLIC SAFETY UTILITY OTHER LICENSES & PERMITS INTERGOV'T REVENUE CHARGES FOR SERVICES FINES & FORFEITS MISC. REVENUE DEBT AND TRANSFERS IN TOTALREVENUES GENERAL FUND OPERATING STATEMENT THROUGH MAY 2014 YTD 2014 A P`TI I A I 3,583,029 4,018,973 476,236 3,660,807 489,190 873,051 410,668 2,451,618 389,884 240,908 892,178 2014 % OF YTD DRIGINAL ANNUAL 2013 BUDGET BUDGET ACTUAL 6,845,170 8,207,000 1,100,000 7,789,544 1,090,000 1,124,800 1,496,000 5,391,233 882,000 581,160 4,077,956 52.3% 49,0% 43.3% 47.0% 44.9% 77.6% 27.5% 45.5% 44.2% 41.5% 21.9% 17,486,542 38,584,863 45.3% 3,361,433 3,793,655 444,373 3,312,875 488,297 937,656 320,025 1,926,608 430,607 250,056 569,096 15,834,682 TOTAL 2013 BUDGET 6,400,000 9,195,000 0 7,846,829 1,065,000 1,108,200 1,495,150 4,498,459 794,650 631,450 1,295,303 34,330,041 % OF TOTAL ACTUAL 52.5% 41.3% 42.2% 45.8% 84.6% 21.4% 4Z8% 54.2% 39.6% 43.9% 46.1% BEGINNING FUND BALANCE 5,264,801 5,902,824 8,546,455 7,573,573 TOTAL SOURCES 22,751,343 44,487,687 51.1% 24,381,137 41,903,614 58.2% EXPENDITURES: CITY COUNCIL 44,606 113,152 39.4% 47,446 121,315 39.1% MUNICIPAL COURT 603,579 1,481,060 40.8% 555,952 1,376,639 40.4% CITY MANAGER 540;237 1,035,567 52.2% 425,841 962,755 44.2% POLICE 5,049,476 12,338,014 40.9% 4,807,724 12,096,846 39.7% FIRE 2,171,150 5,146,376 42.2% 2,571,021 4,431,366 58.0% ADMIN & COMMUNITY SVCS 2,801,283 6,618,351 42.3% 2,546,577 6,022,454 42.3% COMMUNITY DEVELOPMENT 553,715 1,442,650 38.4% 517,231 1,332,076 38.8% ENGINEERING 685,797 1,771,200 38.7% 692,398 1,535,558 45.1% LIBRARY 511,840 1,148,380 44.6% 477,015 477,015 100.0% NON - DEPARTMENTAL 805,986 1,772,143 45.5% 696,739 2,440,351 28.6% DEBT AND TRANSFERS OUT 1,183,576 6,178,588 19.2% 643,657 5,684,984 11.3% TOTAL EXPENDITURES 14,951,245 39,045,481 38.3% 13,981,599 36,481,359 38.3% ENDING FUND BALANCE 7,800,098 5,442,206 TOTAL EXPEND & END FUND BAL 22,751,343 44,487,687 AVAILABLE CASH BALANCE 5,696,048 PERCENTAGE OF BUDGET ALLOCATED FOR 5 MONTHS These statements are intended for Management use only. 42% •1 n'2(lt1 9 12n A Inn IICA 24,381,137 41,183,420 8,112,662 6(b) AGENDA REPORT FOR: City Council June 10, 2014 TO: Gary Crutchfi anager Regular Mtg.: 6/16114 Regular Mtg.: 7107114 FROM: Rick White, f Community & Economic Development Director 2V-1 SUBJECT: Single - Family Lots in Multi - Family Zones (MF# CA2014 -003) I. II. III. IV. V. REFERENCE(S): 1. Single Family Lots in Multi - Family Zones - Proposed Resolution ACTION REQUESTED OF COUNCIL / STAFF RECOMMENDATIONS: 6/16: Conduct Public Hearing 7/7: MOTION: I move to approve Resolution , adopting findings of fact and continuing the imposition of the moratorium on the submittal of subdivision applications for properties zoned R -2, R -3 and R -4 as established by Resolution No. 3557. FISCAL IMPACT: None HISTORY AND FACTS BRIEF: A. On June 2, 2014 the Council approved Resolution No. 3557 imposing a moratorium on the acceptance of subdivision applications for proposed plats located in R -2, R -3 and R -4 zoning districts. B. RCW 36.70A.390 and RCW 35A.63.220 require the Council to hold a public hearing on the moratorium within 60 days of the effective date of Resolution 3557. Following the hearing the Council must adopt findings of fact justifying the imposition of the moratorium. Findings of fact have been included in the attached resolution. DISCUSSION: A. Although not specifically intended for single - family development, the multi- family zoning districts have permitted single - family homes on individual lots since the inception of zoning in Pasco. Single - family lots within the R -2, R -3 and R -4 zones can be a minimum of 5,000 square feet. B. In addition to applying for multi- family rezoning to allow smaller lot sizes for single - family development, builders have the option of platting under the "Planned Density Development" standards which allows the developer to average lot sizes. Under this process some lots can be smaller than the underlying zoning and others are required to be larger while the over -all average lot size must conform to the zoning. This process allows for flexibility in the development process and encourages the development of a variety of housing types to better serve community needs. Although this process is permitted for parcels larger than 20 acres it is not required. C. Using multi - family zoning for single - family developments circumvents the Planned Density process and could lead to a series of single - family developments with only 5,000 square foot lots. D. The moratorium will allow the City to address applicable regulations in the Zoning Chapter of the Pasco Municipal Code. E. Following the Public Hearing, staff' will incorporate any comments received and revise the Findings in the proposed resolution as appropriate. 7(a) RESOLUTION NO. A RESOLUTION of the City of Pasco, Washington, continuing the imposition of a moratorium established by Resolution No. 3557 prohibiting platting within the Residential Two, Three and Four Zoning Districts for a period of six months. WHEREAS, on June 2, 2014 the Pasco City Council approved Resolution No. 3557 establishing a six month moratorium on the acceptance of plat applications within the R -2, R -3 and R -4 Zoning Districts. WHEREAS, to fulfill the requirements of the Revised Code of Washington the following findings of fact are provided as justification for the moratorium established on June 2, 2014 by Resolution No. 3557: a) The Pasco Zoning Ordinance contains R -2, R -3 and R -4 zoning districts primarily intended for multiple- family dwellings with a range of minimum densities. b) Single - family homes are permitted within the R -2, R -3 and R -4 zoning districts provided no single family lot is less than 5,000 square feet in size. c) Developers often build subdivisions to the minimum standard with respect to lot sizes. d) The creation of 5,000 square foot lots without forethought to building design, subdivision integration with existing and adjacent neighborhoods and overall acceptance by the community has the potential to harm the residents of Pasco. e) Pasco Zoning Ordinance permits, but does not require, the use of the "Planned Density Development" process which allows an overall housing density based on the underlying zoning requirements to promote creativity in the design and layout of subdivisions for the development of a variety of housing types to better serve the citizens of Pasco; and WHEREAS, the City intends to review and if appropriate develop zoning and land use regulations within the R -2, R -3 and R -4 Zoning Districts to accommodate smaller lots and at the same time address issues related to subdivisions developed to the minimum standard without forethought or consideration of adjoining neighborhoods; and WHEREAS, the City Council has determined that it is in the best interest of the City that a moratorium be established by Resolution 3557 be continued; and NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF PASCO, WASHINGTON, DO RESOLVE AS FOLLOWS: Section 1. Moratorium Established. A moratorium imposed by Resolution No. 3557 prohibiting the acceptance of subdivision applications within the R -2, R -3 and R -4 Zoning Districts is hereby continued. Resolution - 1 Section 2. Findings of Fact Adopted. The findings of fact herein provided are adopted in support of continuance of the moratorium established by Resolution No. 3557. Section 3. Term of Moratorium. The moratorium imposed by Resolution No. 3557 shall continue for period of six (b) months from June 2, 2014, unless repealed, extended, or modified by the City Council after a public hearing and the entry of appropriate findings of fact as required by RCW 35A.63.220, provided, however, that the moratorium shall automatically expire upon the effective date of zoning regulations adopted by the City Council to address the minimum lot sizes for single family dwellings within the R -2, R -3 and R -4 Zoning Districts within the City of Pasco. Section 4. Effective Date. This Resolution shall be in full force and effect upon its passage and signature below. PASSED by the City Council of the City of Pasco, Washington, at its regular meeting dated this day of _, 2014. Matt Watkins, Mayor ATTEST: APPROVED AS TO FORM: Debra L. Clark, City Clerk Leland B. Kerr, City Attorney Resolution - 2 AGENDA REPORT NO. 15 FOR: City Council Date: 06/05/2014 TO: Gary Crutchfi ; 6anager FROM: Ahmad Qayomi, Public Works Director Workshop Mtg.: 06/09!2014 !! or Mtg.: 06/16/2014 SUBJECT: Six -Year Transportation Improvement Plan 2015 - 2020 I, REFERENCE(S): I . Six -Year Transportation Improvement Plan 2015 -- 2020 - Proposed Plan 2. Six -Year Transportation Improvement Plan 2015 — 2020 - Resolution 3. Six -Year Transportation Improvement Plan 2015 — 2020 - Map II. ACTION REQUESTED OF COUNCIL /STAFF RECOMMENDATIONS: 06/09: Discussion 06116: Conduct Public Hearing 06/16: MOTION: I move to approve Resolution No. thereby adopting the City's Six -Year Transportation Improvement Plan for 2015 -2020. III. FISCAL IMPACT: None IV. HISTORY AND BRIEF FACTS: A) Each year, all Cities and Counties in the State are required to adopt an updated Six -Year Transportation Improvement Plan specifically for federal and state funded projects. For the City of Pasco, this plan has consisted of all projects including the annual overlays, street widening, and signal projects which are within the City limits. Larger projects such as the Lewis Street Overpass also have been shown. B) The proposed six -year program represents those projects that are anticipated to be needed within six years. Several projects will need to be coordinated with utility projects which could change the actual timing of the projects. Although this process of adopting a six -year plan is a state requirement, the Council will again review the projects in the annual Six -Year C.I.P. process and the budgeting process. While the worksheets presented by staff include a potential funding source, many of the projects listed will be dependent upon available funding. In addition, staff will be pursuing available grants from the various funding programs. Staff recommends the plan be presented at a public hearing on June 16, 2014, and that Council adopt the plan by resolution. 7(b) City of Pasco - FINAL Six Year Transportation Improvement Plan Year 2015 -2020 6/5/2014 Project Name Location Project Cost IPotential Funding Sources Year 2015 2015 Annual Crack Seal Program. Various Locations $ 200,000.00 Overlay Funds 2015 Overlays Various Locations $ 300,000.00 Overlay Funds 2015 Micro Surfacing Various Locations $ 500,000.00 Overlay Funds Alley Hard Surface (Chip Seal) Various Locations $ 80,000.00 Local Funds Annual ADA Access Handicap Ramp Retrofit Various Locations $ 60,000.00 CDBG and Local Funds Wrigley Drive Extension WrigelX Drive $ 250,000,00 Arterial /TIF Traffic Signal Controller Upgrades (CONSTRUCTION) Various Locations $ 2,200,000.00 STP /Arterial Argent Road Widening (CONSTRUCT12n Road 40 to 20th Ave $ 1,922,000.00 LID Funds /STP Dual RT SB Road 68 (CONSTRUCTION) Burden Blvd to I -182 $ 486,000.00 STP /TIF Off Ramp at Road 44 WB (STUDY) Road 44 & 1 -182 $ 150,000.00 Arterial/TIF/STP Oregon Ave (US 397) Phase I (CONSTRUCTION) 1- 182/395 to "A" Street $ 2,500,000.00 STP /LID/WA Grant Chapel Hill (DESIGN) Road 68 to Road 84 $ 100,000.00 Arterial/Utility 50k Sandifur Prkwy Widening Convention to Road 68 $ 390,000.00 Arterial/TIF /STP Burden & Road 60 Traffic Signal (DESIGN) Burden Blvd and Road 60 $ 30,000.00 General/TIF /Overia Road 68 Triple Right (CONSTRUCTION) Road 68/West Bound Off Ram $ 350,000-00 STP /Arterial Bus Pre -Em tion a7 CBC / Argent Saraceno Way/Argent $ 46,000.00 JCBC 20th Ave (DESIGN) Year 2016 IMarie to Argent Road 1 $ 60,000.00 STP /Arterial 2016 Annual Crack Seal Program Various Locations $ 200,000.00 Overlay Funds 2016 Overlays Various Locations $ 300,000.00 Overlay Funds 2016 Micro Surfacing Various Locations $ 500,000.00 Overlay Funds Alley Hard Surface (Chip Seal) Various Locations $ 80,000.00 Local Funds Annual ADA Access Handicap Ramp Retrofit Various Locations $ 60,000.00 CDBG and Local Funds 1 -182 Off and On Ramp at Rd 52 (DESIGN) Road 52 $ 250,000.00 STP /Arterial/TIF Road 68 Widening - South of 1 -182 (DESIGN) I -182 to Argent Road $ 100,000.00 Arterial Lewis Street Overpass 12nd Ave to Oregon Street 1 $ 15,000,000.00 1 WA Grant Off Ramp at Road 44 WB (ROW/DESIGN) lRoad 44 & 1 -182 1 $ 200,000.00 lArteriaIMPSTP Lewis Street One Way Couplets 2nd Ave to 10th Ave $ 2,000,000.00 Arterial /STP Sandifur Prkwy 52 -60 (CONSTRUCTION) Road 52 to Road 60 $ 398,000.00 TIF /STP Harris Road Realignment (DESIGN /CONSTRUCTION) Sandifur Prkwy and Broadmoor Blvd $ 250,000.00 Private Developer Chapel Hill (CONSTRUCTION) Road 68 to Road 84 $ 1,363,000.00 TIF /Overly /STP Oregon Ave (US 397) Entrance Phase II (CONSTRUCTION) 10regon Ave and Ainsworth Ave $ 500,000.00 ILID Oregon Ave (US 397) Phase II (CONSTRUCTION) Year 2017 "A" Street to Ainsworth Ave $ 1,030,000.00 1 STP/LID Funds 2017 Annual Crack Seal Program Various Locations $ 200,000.00 OverlM Funds 2017 Overlays Various Locations $ 300,000.00 Overlay Funds 2017 Micro Surfacing Various Locations $ 500,000.00 Overl4y Funds Alley Hard Surface (Chip Seal) Various Locations $ 80,000.00 Local Funds Annual ADA Access Handicap Ramp Retrofit Various Locations $ 60,000.00 CDBG and Local Funds Road 68 Widening - South of I -182 (CONSTRUCTION) Argent Road to I -182 $ 600,000.00 Capital Improvement Funds /STP Road 76 Overpass - Argent to Burden (DESIGN) Argent to Burden $ 100,000.00 STP Road 68 & Court Street Signal Year 2018 lRoad 68 to Court Street 1 $ 250,000.00 1TIF Funds 2018 Annual Crack Seal Program Various Locations $ 210,000.00 Overlay Funds 2018 Overlays Various Locations $ 300,000.00 Overlay Funds 2018 Micro Surfacing Various Locations $ 500,000.00 Overlay Funds Alley Hard Surface (Chip Seal) Various Locations $ 40,000.00 Local Funds Annual ADA Access Handicap Ramp Retrofit Various Locations $ 60,000.00 CDBG and Local Funds Off Ramp at Road 44 WB Road 44 & 1 -182 $ 200,000.00 Arterial/Overla /STP I -182 Off and On Ramp at Rd 52 Road 52 $ 200,000.00 STP /Arterial Argent & Road 100 Traffic Signal DESIGN /CONSTRUCTION Argent Road and Road 100 $ 250,000.00 TIF Funds Sacajawea Heritage Trail/Levee (CONSTRUCTION) Road 52 to Road 72 $ 850,000.00 General/STPIWA Grant Heritage Ave & A St. (Signal) Heritage Ave and A St. $ 190,000.00 STP /Arterial Lewis St & Heritage Ave (Signal) Lewis Street and Heritage Ave $ 190,000.00 STP /Arterial Rd 84 & Chapel Hill (Signal) Year 2019 lRoad 84 and Chapel Hill Blvd $ 190,000.00 STP/TIF 2019 Annual Crack Seal Program lVarious Locations $ 210,000.00 1 Overlay Funds QI ■...m..o© -o as � v v n n m rn co C6 co 4n o Q' � O a� o = � Es= a 4 o O O O O O W ,fl N > > > > ;:4 Ln co w 'L w a 2 O - ° U � u Q O O � UQ vi U] LA Ln U w w a V3 d Ln A cn LA w 0 0 w 0 w m 0 o C*1 C y0 i o ���ww' U Q Qs 0 a) U w o' 0 0 a 4 d ri 0 O 0 O O O O O O Q O O C O O 0 0 0 O Q Q O O O Q O O p O O Q O p O O O O O O O O Q O O O QI ■...m..o© -o as � v v n n m rn co C6 co 4n o Q' � O a� o = � Es= a 4 o O O O O O W ,fl N > > > > ;:4 O O O C? O p 0 0 0 O Q O O O O O O Q O O O O C O O O O O Q O O O O O O O O 0 0 0 0 0 0 0 0 601�160qIE09lf�oqlGlq164164 Ln co w y� w a 2 z - ° U � u Q O O O C? O p 0 0 0 O Q O O O O O O Q O O O O C O O O O O Q O O O O O O O O 0 0 0 0 0 0 0 0 601�160qIE09lf�oqlGlq164164 Ln co w cl w a ca E0 O O � UQ vi U] U � V3 co LA w 0 0 w 0 w m 0 o C*1 C y0 a� 0 G� o o 0 0-� 0 0 a d �-la x D O O p 0�� �°►°<Cdr�w�v�a O O O C? O p 0 0 0 O Q O O O O O O Q O O O O C O O O O O Q O O O O O O O O 0 0 0 0 0 0 0 0 601�160qIE09lf�oqlGlq164164 Ln co w w w a ca O O O � UQ vi U] O O O C? O p 0 0 0 O Q O O O O O O Q O O O O C O O O O O Q O O O O O O O O 0 0 0 0 0 0 0 0 601�160qIE09lf�oqlGlq164164 w � Q ZO .� u U J U U N U� �aQ,��r�pa QO x a o 0 0 c o y 3 Ne N Q GL . r7 2 U ke) LA w 0 0 w 0 w m 0 o C*1 y0 G� o o 0 0-� 0 0 a d �-la x D O O p 0�� > > > > > w � Q ZO .� u U J U U N U� �aQ,��r�pa QO x a o 0 0 c o y 3 Ne N Q GL . r7 2 RESOLUTION NO. A RESOLUTION adopting the revised and extended Comprehensive Street, Storm Drain and Bridge Programs for the City of Pasco. WHEREAS, RCW 35.77.010 provides for annual revision and extension of the Comprehensive Street Program of each city and town, after public hearing thereon; and WHEREAS, it is now time to revise and extend the Comprehensive Street, Storm Drain and Bridge Programs; and NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF PASCO, That the City Council of the City of Pasco hereby adopts the revision and extension of the Comprehensive Street, Storm Drain and Bridge Programs for the ensuing six years as attached hereto and labeled "Six -Year Transportation Improvement Plan 2015 - 2020" incorporated by this reference as though fully set forth herein; and Be It Further Resolved, that the Comprehensive Street, Storm Drain and Bridge Programs shall be filed with the Benton - Franklin Regional Council and the State of Washington. PASSED by the City Council of the City of Pasco this 16th Day of June, 2014. Matt Watkins Mayor ATTEST: Debra L. Clark City Clerk APPROVED AS TO FORM: Leland B. Kerr City Attorney AGENDA REPORT FOR: City Council TO: Gary Crutchfie anager Rick Terway, , Admin & Community Services FROM: Dunyele Mason, Financial Services Manager SUBJECT: Billing & Collection Processes I. REFERENCE(S): 1. Billing & Collection Processes - Proposed Ordinance June 2, 2014 Workshop Mtg.: 619/14 Regular Mtg.: 6116114 II. ACTION REQUESTED OF COUNCIL /STAFF RECOMMENDATIONS: 6/9: Discussion 6116: MOTION: I move to adopt Ordinance No. , amending Pasco Municipal Code Title 3 establishing various fees, defining acceptance of credit cards and establishing procedures for miscellaneous billing and, further, authorize publication by summary only. II. FISCAL IMPACT: IV. HISTORY AND FACTS BRIEF: A) The city bills for various types of services. The utility billing and collection rules are listed in Title 3 Chapter 200. Rent billing and collections processes are covered by individual contract. LID and cemetery billings and collections are covered by ordinance. Other types of services' (e.g. ambulance, abatements, inspections, false alarm response, etc.) billing and collection processes are not currently specified in the Pasco Municipal Code. Licenses, permits and impact fees are prepaid rather than a billed service and are therefore specifically excluded from this discussion. B) The city currently accepts credit cards for utility bills, cemetery bills, golf course activities and recreation activities. The attached ordinance would expand this acceptance to other billed services such as ambulance, fence replacement, back flow devices, engineering inspection, etc. It would continue to prohibit the use of credit cards to pay for non - billed charges such as permits, taxes, licenses, etc. V. DISCUSSION: A) Establish consistent due dates and collections fees for all billed services. Except as specified by contract or specific ordinance (e.g. rents, LIDS, etc.) billing and collection processes will be consistent with the utility billing and collection processes: Due when billed, $10 penalty at 28 days, $10 collection fee at 38 days, a $10 Pre - Collect collection agency notice at 45 days and turned over to outside collection agency at 75 days (5% collection agency fee). B) Expand credit card acceptance to include the remaining billed services. The use of credit cards for billed services is a way keep customer loan activities in the private sector. Examples of billed services are services for ambulance, cemetery, backflow devices, code enforcement, fence replacement, engineering inspections, false alarms, etc. Payment by credit card allows the customer to pay debts to the city in full, and immediately, when billed. The customer can then pay their debt to the credit card company (private lender) by setting the monthly payments at whatever they can afford. This is a cost effective alternative to the city establishing installment payment plans. 8(a) C) Formalize current policy of accepting credit cards for Recreational programs. Keeping the city out of the lending business is one reason to accept credit cards; the other is to promote certain activities or programs. The attached ordinance puts into code the current practice of promoting recreational (including golf course) activities by accepting credit cards and by waiving associated debit/credit card processing fees. D) Formalize current policy to disallow credit card (but allow debit card) use for prepaid (non - billed) charges. The processing fees for credit cards are higher than they are for debit cards because credit cards are paid over time and are a form of lending. Debit cards generally carry a lower processing cost because they transfer payment immediately and therefore are just to cover the one time transaction processing cost. Permitting, licensing and B &O tax processing activities are carried out primarily by the business sector and are normal business activities. The city does accept debit cards to provide business customers payment convenience. Unlike individuals that incur sudden, large bills (such as for Cemetery and Ambulance services), businesses typically have access to other types of credit (e.g. bank line of credit) that do not require the city to incur any financing costs. The code change maintains current practice for taxes, licenses and permit payments. E) Establish guidelines for installment billings: Installment plans should only be used for individuals and be short-term; an installment plan should not be authorized merely as a mechanism for customer convenience. All installment payment plans should be in writing in a form prescribed by the city and signed by both the customer and the Finance Manager. Installment payment plans would be available as follows: 1. For debts owed by individuals only. Installment plans are not available for debts owed by corporations, partnerships, businesses or other entity or associations; and 2. For debts as defined in 3.300.010 (which include such services as ambulance, cemetery, backflow devices, fencing replacement, etc.); and 3. All installment payment plans must provide for payment in full within twelve months of the original bill date. Monthly payments are to be a minimum of $100. In cases of financial hardship, the applicant may request and the Finance Manager is authorized to set a reduced monthly payment of not less than $50 per month. Any installment plan should include a loan origination fee equal to the greater of 3% the amount owed or $10 and a per installment billing fee of $5. F) Existing agreements. Agreements entered into prior to the effective date would remain in place until paid in full or default (missed payment) occurs. If default occurs then the entire remaining amount becomes immediately due and payable. ORDINANCE NO. AN ORDINANCE of the City of Pasco, Washington, amending Title 3 "Revenue and Finance" establishing various fees, defining acceptance of credit cards and establishing procedures for miscellaneous billing. WHEREAS, the City provides a variety of services whereby the customer is billed for services rendered; and WHEREAS, some of those billing and collection processes are not currently included in municipal code; and WHEREAS, unifying billing and collection processes will provide a more efficient means of administering those systems and provide a more convenient and equitable system for the City's customers; NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF PASCO, WASHINGTON, DO ORDAIN AS FOLLOWS: Section 1. That the following subsections of the Pasco Municipal Code 3.200.140 pertaining to utility payments shall be repealed: Section 2. That Section 3.200.140 entitled "MISCELLANEOUS UTILITY CHARGES" of the Pasco Municipal Code, shall be and hereby is amended to react as follows: J) There sliall be a chafe as set forth in Chapter 3.07 of this code to be known as the "Utility Lien Search Fee" for providing a legally binder utility pay -off estimate pursuant to RCW 60.80.020. Section 3. That Chapter 3.112 RETURNED CHECKS the Pasco Municipal Code, shall be and hereby is amended to read as follows: CHAPTER 3.112 RETURNED CHECKS AND ELECTRONIC PAYMENTS Sections: 3.112.010 PENH T RETURNED PAYMENT PENALTY — IMPOSITION 3.112.020 PENALTY FEE CASH ONLY —AUTHORITY 3.112.030 RETURNED PAYMENT PENALTY NOTICE 3.112.040 MISCELLANEOUS PAYMENT PROCESSING CHARGES 3.112.050 DEBIT /CREDIT CARD ACCEPTANCE 3.112.010 PENALTY RETURNED PAYMENT PENALTY — IMPOSITION. Any person, corporation, business or partnership or other entity or association, issuing a bank check, OF draft or electronic form of payment iincludina, but not limited to, debit cards and credit cards to the City of Pasco, or any of its departments, shall he assessed by the City Finance Department a penalty fee known as the "Returned Payment Fee" as set forth in the fee provisions of this code, if the payment batik el3eek o • dfaft is returned to the City unpaid or otherwise not processed when presented. because of in ffieietit f „„as in the aee t of the b Vll1l4J ` FL {444V MF J[ \!J L114 iJC[�t'1 Vl i]L GQII3ia tke aeeeiifit Of the Payer- is elased 3,112.020 PENALTY F9F GASH ONLY — AUTHORITY. The City Finance Department and any other City Department is authorized not to accept the bank check or draft of a person, corporation, business, partnership, or other entity or association assessed the penalty fee set out in Section 3.1120.010 until the penalty fee has been paid along with the amount of the underlying batik check or draft by cash, cashier's check or money order. 3.112.030 NOTICE. Notice of the penalty fee imposed by Section 3.112.010 and the authority imposed by Section 3.112.020 shall be posted in t a place or places that is open to the view of the general public at Gity Hall where payments are accepted from members of the public. Additionallv, notice of the penalty shall be included on all billing invoices 3.112.040 MISCELLANEOUS PAYMENT PROCESSING CHARGES. There shall be a charge as set forth in Chapter 3.07 of this code the following charges: A) "Debit Card Convenience Fee (Counter)” for payments made by debit card and processed at the utility payment counter and the "Debit /Credit Card Convenience Fee (Web)" for payments made by debit /credit card and processed via the on -lute web payment system. B) "On -line Processing Assistance Fee" for payments made over the Rhone that utilize office personnel to process the transaction via the on -line or plione payment system. 3.111050 DEBIT /CREDIT CARD ACCEPTANCE. Credit cards will be accepted as paMent for all billed charges, related payment processing charges and all charges incurred at the Sun Willows Golf Course, City View Cemetery and through the Recreation Division. Credit cards will not be accepted for permits, licenses, taxes, and other fees where payment is required before service, license or permit is provided. Debit cards are accepted for all fees, permits and licenses whether billed or not. 2 Section 4. That Section 3.07.150 entitled "Utilities - Billing" of the Pasco Municipal Code, shall be and hereby is amended to read as follows: 3.07.150 UTILITIES --- BILLING: 3 Fee /Charge Reference A) Application Fee 1) Service to new connection $15.00 13.16.010 2) Service to existing connection $15.00 3.200.140 (A) B) Utility Deposit Water Consumption Factor $75.00 3.200.040 C) Disconnect Collection of , :, -Fee $50.00 3.200.140(C) D) Field Service 1) Field Service Fee $15.00 3.200.140(D) 2) After Hours Fee $75.00 3.200.140(E) 3) After Hours Fee /Collection $25.00 3.200.140(F) E) Unauthorized Reconnect Penalty $50.00 3.200.110 F) Late Pay penalty $10.00 3.200.140(B) G) Phooe Call .,,tion "feces Collection $10.00 3.200.140(B) Notification Fee N4 Debit Fee (Cowiter) $0.50 3.200.140(46) 1) Debit!!`. -edit f afd r,tinye a Fee (Web) S1.50 -1.200.140!C_4 44 Phone 3.2 0.1 Aflt=u" 1_]_Lone No Assist Tfay fflent Fe S2.00 3,200.140(44 H) Utility Lien Search Fee $30.00 3200.140 (J) -6)1) Meter test (accuracy test of meter) $60.00 13.24.030 j) Fire Line -- per month $8.00 13.28.060 N)Kj Meter repair $100.00 plus 13.24.100 time /material OU Sewer tap and inspection (In/ Out City) $75.00 13.52.140 P- ml Water tap application fee (each) $150.00 3 Section 5. That Section 3.07.090 entitled "MISCELLANEOUS" of the Pasco Municipal Code, shall be and hereby is amended to read as follows: A) Photocopy Fees — per copy B) Returned Cheeks Payment Fee G) Ufility,'Liefi Sear-eh Fee Fee/Charge $ 0.15 $25.00 $34700 C) Debit Card Convenience Fee lCounter) $ 0.50 D) Debit /Credit Card Convenience Fee (Web) $ 1.50 E) Phone Operator Assist Payment Fee $ 3.00 F) Phone No Assist Payment Fee $ 2.00 G) Late Pay Penalty $10.00 H) Phone & Collection Fee $10.00 11 Pre - Collection Fee $10.00 J) Collection Turnover Fee (char res, penalties & fees) 5% K) Installment Plan Origination Fee ($10 mini 3% L) Installment Plan Monthly Bill Fee $ 5.00 Reference Admin Order 42 3.112.010 3.1 12.040 A) 3.112.040 A) 3.112.040 B) 3.1.12.040 B) 3.300.050 A) 3.300.050 B) 3.300.050 C) 3.300.050 D) 3.300.070 D} 3.300.070 D) Section 6. That Section 3.200.080 entitled "DELINQUENCY" of the Pasco Municipal Code, shall be and hereby is amended to read as follows: 3.200.080 DELINQUENCY. A) All utility charges shall be due immediately upon billing and become delinquent if not paid in full twenty days after the date of billing. Late fees, penalty fees and collections fees are considered delinquent when assessed. B) Notice of delinquency shall be sent on the subsequent monthly bill informing the customer that a late pay penalty fee has been added and if payment for all delinquent charges is not received by the date, time and location listed on the notice, additional fees will be incurred and water service may be stopped without further notice. A copy of the delinquent bill will also be sent to the owner for all delinquent tenant accounts. Delinquent charges thr- whieh PaNqnnent has not been ,.eeeive that are not paid by ten days past the subsequent monthly bill date shall be sent a phone notification to the customer's designated local phone number on file stating the date and time by which payment must be received in order to be excluded from the disconnect collection process. Delinquent charges for- whieh payment has not beet r that are not paid by twelve days past the subsequent monthly bill date shall be subject to disconnection of water service until payim ent has been reeeive all delinquent charges are paid unless the manager and the customer establish a written and signed payment arrangement to provide for payment of all charges billed and expected to be billed by the last payment date of the arrangement. Payment arrangements are not automatic and are to be based on a written policy established by the City Manager and administered by the manager. Failure to adhere to the written arrangement will result in additional fees as specified in Chapter 3.07 and disconnection of water service without further notice. If an account is processed through the disconnect collection process for two consecutive months or any three times within the last twelve months, the manager may require payment for all current as well as delinquent charges be received prior to reconnecting water service. 0 C) A separate delinquent notice, in addition to the notice pursuant to paragraph (B) shall be delivered to the service location of multi - family and commercial properties at least seven days prior to scheduled disconnection of service to provide tenants the opportunity to contact the landlord or to arrange payment prior to the disconnection of service. Section 7. That a new Chapter 3.300 entitled "Miscellaneous Billing Management" of the Pasco Municipal Code, shall be and hereby is created and shall read as follows: Chapter 3.300 MISCELLANEOUS BILLING MANAGEMENT Sections: 3.300.010 DEFINITIONS 3.200.020 FAILURE TO RECEIVE MAIL - CHANGE IN ADDRESS OR OWNERSHIP 3.300.030 ORDER OF PAYMENT 3.300.040 BILLING 3.300.050 DELINQUENCY 3.300.060 AMBULANCE INSURANCE COVERAGE 3.300.070 CEMETERY SERVICES 3.300.080 INSTALLMENT PAYMENTS 3.300.090 BACKBILLS- PREPAYMENT REQUIRED 3.300.100 HEARING AND APPEAL. 3.300.010 DEFINITIONS. For the purpose of this Chapter, certain teens or words shall be interpreted or defined as follows. Except as defined in this section all words in this title shall carry the customary meanings. Words used in the present tense include the future and the future includes the present and the plural includes the singular and the singular includes the plural. This chapter specifically excludes debts and services covered by Chapter 3.200 Utility Billing Management, or is set out by specific contract (e.g. rents), or is set out by specific ordinance or resolution (e.g. Local Improvement District debt). If contracts are silent as to payment terms or conditions, then this chapter shall apply. A) "Manager" means the Finance Manager, and his or her designee. B) "Office business hours" means Monday through Friday from 8:00 a.m, to 5:00 p.m. excluding holidays where city offices are closed. C) "Office nonbusiness hours" means any days and hours not included in office business hours. D) "Paid" means payment that has been received, processed and posted to the customer's account. E) `Billing office" means the Finance Division office inside City Hall, which is located at 525 N 3rd Ave Pasco, WA. It specifically excludes the drop box located at City Hall or any other location. 3.300.020 FAILURE TO RECEIVE MAIL - CHANGE IN ADDRESS OR OWNERSHIP. Failure to receive snail shall not be recognized as a valid excuse for failure to pay bills when due. Change in ownership of property and change in mailing address must be made in writing to the Finance Department. All bills and notices, including delinquency and collection notices shall be sent to the customer's billing address provided the City. 5 3.300.030 ORDER OF PAYMENT. Payments received shall be applied against outstanding charges in the following order: Interest and finance charges, late and penalty fees, collection charges, then charges in the order listed on the invoice. Overpayments may be applied to other invoices for the same customer. If no other outstanding invoices exist then the overpayment shall be refunded. Refunds will be issued within two weeks of the receipt of the overpayment 3.300.040 BILLING. All charges shall be due immediately upon billing and become delinquent if not paid in full to the billing office during office hours within twenty -eight days of the original bill date. Late fees, penalty fees and collections fees are considered delinquent when assessed. Bills shall include notice of availability of an installment payment plan when applicable and the process for the customer to request such a payment plan. 3.300.050 DELINQUENCY. Delinquent bills shall be processed as follows: A) Invoices that are not paid in full within twenty -eight days will incur a penalty known as a "Late Payment Penalty" in an amount as set forth in Chapter 3.07. A delinquent notice indicating the amount of the invoice and penalty will be mailed. The notice shall also include the timeline for the additional of future collection fees as outlined below (at thirty -eight days and forty -five days) as well as the process for the customer to dispute charges or request a payment plan (if applicable). B) Bills not paid in full within thirty -eight days from the original bill date will incur a collection fee known as "Phone & Collection Fee" in an amount as set forth in Chapter 3.07. The customer will be called at the phone number provided by the customer to the city Finance Department. If no phone number is provided the city, at a minimum, will check the local phone book to try and locate a phone number. The collection fee applies irrespective of the phone call outcome. C) Bills not paid in full within forty -five days of the original bill date will be flagged to turn over to an outside collection agency for follow up. A "Pre - Collect" notice will be sent informing the customer they have 30 days to either pay in full (including penalties and collection charges) or dispute the charges or their account will be turned over to an outside collection agency and that an additional collection fee has been added. Customers will also be notified that once the bill (including penalties and collections charges) has been turned over collection then their right to dispute charges becomes forfeit and the account will not be withdrawn from the outside collection process once it is turned over. A collection fee known as "Pre- Collection Fee" in an amount as set forth in Chapter 3.07 will be added. D) Bills (including penalties and collections charges) not paid in full within seventy - five days of the original bill date and which are not in dispute and which are not covered by an installment payment plan will be turned over to an outside collection agency. Accounts turned over to an outside collection agency incur an additional collection fee by the city known as the "Collection Turnover Fee" at the time of transfer as set forth in Chapter 3.07 and will incur interest charges at the maximum rate allowed by state law starting with the date of transfer. 3.300.060 AMBULANCE INSURANCE COVERAGE. The responsibility for payment of ambulance and medical service charges remains with the patient (or patient's family if a minor). In the case of ambulance charges, if the customer assigns the right to collect payment from an insurance company and provides all information and approvals when requested, the city will bill the insurance company directly. Once the insurance company has paid, then the 2 remaining amount will be billed to the customer per 3.300.040. If the insurance company has not paid within sixty days, then the full amount will be billed to the customer per 3.300.040. The customer may request an installment payment plan per 3.300.060. If insurance proceeds are Iater received by the city then the overpayment will be refunded to the customer. 3.300.070 CEMETERY SERVICES. All cemetery goods and services must be paid for either at the time of sale, or before burial, provided, however upon acceptance of application for time payment, the account may be paid over time as follows. Fifty percent of the invoice must be paid prior to burial; the remaining amount exceeding $1,500 must be paid within sixty days. The last $1,500 must be paid in no longer than twelve months from the original invoice date. 3.300.080 INSTALLMENT PAYMENT PLANS. Per 3.112.040 credit cards are accepted for all billed debts. The city is considered the lender of last resort when there are no savings or other credit avenues available. An installment plan is not authorized merely as a mechanism for customer convenience. All installment payment plans must be in writing in a form prescribed by the city and signed by both the customer and the manager. Installment payment plans are available as follows: A) For debts owed by individuals only, Installment plans are not available for debts owed by corporations, partnerships, businesses or other entity or associations. B) For debts as defined in 3.300.010. C) All installment payment plans must provide for payment in full within no later than twelve months of the original bill date with $100 per month as the recommended minimum payment. An applicant may request a financial hardship waiver from the manager who is authorized to set a lower monthly payment. Such lower payment shall be no less than $50 per month. D) There shall be a charge known as the "Installment Plan Origination Fee" as well as a flat rate, per installment, processing fee known as the "Installment Processing Fee ". Both amounts are set forth in Chapter 3.07. 3.300.090 BACK BILLS - PREPAYMENT REQUIRED. An applicant who is liable to the City for unpaid, past due charges may be required to pre -pay for future services. Service may be denied to any person or persons who use any deceptive, unlawful, or misleading means or device whatsoever to avoid or minimize the payment for services or other charges owed. 3.300.100 HEARING AND APPEAL. Any person aggrieved by the assessment of any charge, fee, or penalty, may, within ten (10) days of receipt of the City's billing to which they are objecting, in writing, upon a form provided by the City, request an informal administrative hearing before the manager. The manager hearing this dispute shall be authorized to correct any errors to the customer's billing. The appeal hearing shall be scheduled by the manager at City Hall and conducted during regular business hours within seven (7) business days of receipt of the appeal. A written decision shall be delivered to the customer at the address designated on the appeal within ten (10) days of the hearing. Section 8. This Ordinance shall take effect September 1, 2014. 7 PASSED by the City Council of the City of Pasco at a regular meeting the 16th day of June 2014. Matt Watkins, Mayor ATTEST: APPROVED AS TO FORM: Debra L. Clark, City Clerk Leland B. Kerr, City Attorney AGENDA REPORT FOR: City Council June 10, 2014 TO: Gary Crutchfiel Manager Regular Mtg.. 6 /16 /14 Rick White, Community & on is Development Director �Z[, / FROM: David McDonald, City Planner SUBJECT: Madison Park Preliminary P]at: EE Resources, (MF# PP 2014 -003) I. REFERENCE(S): 1. Madison Park - Overview Map 2. Madison Park - Vicinity Map 3. Madison Park - Resolution. 4. Madison Park - Preliminary Plat 5. Madison Park - Report to the Planning Commission 6. Madison Park - Planning Commission Minutes: Dated 4117114 & 5/15/2014 II. ACTION REQUESTED OF COUNCIL / STAFF RECOMMENDATIONS: 6116: MOTION: 1 move to approve Resolution No. approving the Preliminary Plat for Madison Park. HI. FISCAL IMPACT: NONE IV. HISTORY AND FACTS BRIEF: A. On April 17, 2014, the Planning Commission conducted a public hearing to develop a recommendation for the City Council on the Preliminary Plat for Madison Park. Madison Park is a planned density development plat located north of Sandifur Parkway and east of Road 52. The Madison Park development was formally known as Northwest Commons. B. Following the conduct of a public hearing, the Planning Commission determined that with conditions, the Preliminary Plat could be recommended for approval. The recommended conditions are contained in the attached resolution. C. No written appeal of the Planning Commission's recommendation has been received. 8(b) RESOLUTION NO, A RESOLUTION APPROVING A PRELIMINARY PLAT FOR MADISON PARK PLANNED DENSITY DEVELOPMENT, WHEREAS, RCW 58.17 enables the City to uniformly administer the process of subdividing property for the overall welfare of the community; and, WHEREAS, owners and developers of property situated in the northeast quarter of Section 9, Township 9 North, Range 29 East, W.M., have requested approval of a preliminary plat; and, WHEREAS, the Planning Commission has reviewed said preliminary plat which is named Madison Park Planned Density Development; and, WHEREAS, following a public hearing, the Planning Commission found the proposed plat promoted the general welfare of the community and recommended said preliminary plat be approved with conditions; NOW THEREFORE, BE IT RESOLVED BV THE CITY COUNCIL OF THE CITY OF PASCO: That the preliminary plat for Madison Park Planned Density Development, located in the north half of Section 11, Township 9 North, Range 29 East W.M., is hereby approved with the following conditions: 1) At the time lots are developed, all abutting roads and utilities shall be installed to City standards as approved by the City Engineer. This includes, but is not limited to water, sewer and irrigation lines, streets, street lights and storm water retention. The handicapped accessible pedestrian ramps must be completed with the street and curb improvements prior to final plat approval. All proposed utilities must be installed underground by the developer at the developer's expense including any power lines along Road 52. 2) Santa Cruz Lane between Porto Lane and Tyre Lane shall be constructed with the first phase of the development. 3) The developer shall install a properly designed irrigation system with stubs to all lots in the subdivision for future irrigation needs. All easements/rights-of-way necessary to convey the irrigation system to and through the proposed plat must be conveyed to the City of Pasco. The irrigation lines shall run in easements/rights-of-way as directed by the City Engineer. 4) Excess right -of -way along Power Line Road and Road 52 must be landscaped. Said landscaping shall include irrigation, turf and trees. Trees shall be planted at 50 foot intervals. The species of the trees will be determined by the Parks Department. All landscaping and irrigation plans shall be reviewed and approved by the Parks Department prior to installation. Water usage for City right -of -way landscaping shall come from a source as approved by the City of Pasco with the connection and meter fees paid for by the developer. 5) The developer/builder shall pay the City a "common area maintenance fee" of $475 per lot upon issuance of building permits for homes. These funds shall be placed in a fund and used to finance the maintenance of arterial boulevard strips. The City shall not accept maintenance responsibility for the landscaping abutting said streets until such time as all fees are collected for each phase that abut said streets. 6) The developer/builder shall pay the "traffic impact fee" established by ordinance at the time of issuance of building permits for homes. Fees collected shall be placed in a fund and used to finance signalization and other improvements necessary to mitigate traffic impacts on the circulation system within the I -182 corridor. 7) The developer shall be responsible for improving and dedicating the park site to the City. The park improvement plans must be reviewed and approved by the Parks Division prior to construction. The park must be built and dedicated before permits have been issued for 250 houses. The community park fee must be collected with the issuance of a building permit for each house. 8) The developer/builder shall mitigate impacts to the Public School System by the "school impact fee" established by Ordinance at the time of issuance of building permits for homes. 9) No utility vaults, pedestals, or other obstructions will be allowed at street intersections. 10) All corner lots and other lots that present difficulties for the placement of yard fencing shall be identified in the notes on the face of the final plat(s). 11) All storm water is to be disposed of per City and State codes and requirements. 12) The developer shall insure active and ongoing dust, weed and litter abatement activities occur during the construction of the subdivision and construction of dwellings thereon. 13) The developer shall prepare a dust, weed and erosion control plan to be approved by the City prior to approval of any construction drawings for the first phase of the subdivision. 14) The developer shall be responsible for the creation of record drawings. All record drawings shall be created in accordance with the requirements detailed in the Record Drawing Requirements and Procedure form provided by the Engineering Division. This form shall be signed by the developer prior to construction plan approval. 15) All engineering designs for infrastructure and final plat(s) drawings shall utilize the published City of Pasco Vertical Control Datum and shall be identified on each such submittal. 16) The final plat(s) shall contain a 10 -foot utility easement parallel to all streets unless otherwise required by the Franklin County PUD. Depending on load needs the PUD will need 15 foot easements for select streets to be determined at the design stage of the development. 17) The final plat(s) shall contain the following Franklin County Public Utility District statement: "The individual or company making improvements on a lot or lots of this Plat is responsible for providing and installing all trench, conduit, primary vaults, secondary junction boxes, and backfill for the PUD's primary and secondary distribution system in accordance with PUD specifications; said individual or company will make full advance payment of line extension fees and will provide all necessary utility easements prior to PUD construction and/or connection of any electrical service to or within the plat ". 18) Street lighting must be installed to the City of Pasco/Franklin County PUD standards and as directed by the City Engineer. Residential street lights are typically installed every 300 2 feet, and collector /arterial type street lights are typically installed every 150 feet. Street light positioning is alternating and is measured along the centerline of the road. 19) Prior to the City of Pasco accepting construction plans for review the developer must enter into a Storm Water Maintenance Agreement with the City. The developer will be responsible for obtaining the signatures of all parties required on the agreement and to have the agreement recorded with the Franklin County Auditor. The original signed and recorded copy of the agreement must be presented to the City of Pasco at the intake meeting for construction plans. 20) The developer will be required to conform to all conditions set forth in the Storm Water Maintenance Agreement including, but not limited to, regular cleaning and maintenance of all streets, gutters, catch basins and catch basin protection systems. Cleaning shall occur on a regular basis to ensure that no excess buildup of sand, trash, grass clippings, weeds or other debris occurs in any portion of the streets, gutters, or storm water collection facilities. Cleaning and upkeep of the streets, gutters, and storm water collection facilities must be to the satisfaction of the City Engineer. The developer will be responsible for operating and maintaining the storm drain system in accordance with the Storm Water Maintenance Agreement for a period of up to five years from the date of final plat(s) approval depending on the build out schedule for homes on the lots. 21) The developer will be required to comply with the City of Pasco Civil Plan Review process. 22) The developer shall install a common Estate type masonry wall /fence 6 feet in height adjacent the rear line of all lots backing on Road 52 and Power Line Road as a part of the infrastructure improvements associated with each phase abutting said streets. Prior to installation the City must approve said wall /fence. Consideration must be given to the vision triangle at the intersection of streets. The City may make repairs or replace the fencing as needed. Property owners adjoining said fence shall be responsible for payment of all costs associated with maintenance and upkeep. These fencing requirements shall be noted clearly on the face of the final plat(s). A concrete mow strip shall be installed under any common fence as directed by the City Parks Division and shall be approved by the Parks Department prior to installation. 23) The developer shall install landscaping (turf) and irrigation within the gas line easement and the Home Owners Association established for the plat shall maintain said landscaped area. A note shall be place on all final plats explaining the obligation of the Home Owners Association to maintain the gas line easement landscaping. 24) The developer shall install a common Estate type masonry wall /fence 6 feet in height around the City well site on Road 52. Said wall must match the wall constructed along Road 52. Property owners adjoining said fence shall be responsible for payment of all costs associated with maintenance and upkeep. These fencing requirements shall be noted clearly on the face of the final plat(s). 25) The developer shall install a common Estate type masonry wall /fence 6 feet in height around the irrigation well sites abutting Power Line Road. Said walls must match the wall constructed along Road 52 and conform to all front yard setback provisions. Property owners adjoining said fence shall be responsible for payment of all costs associated with maintenance and upkeep. These fencing requirements shall be noted clearly on the face of the final plat(s). Required front yard setbacks must be maintained along all interior streets. 3 26) Lots abutting Power Line Road and Road 52 shall not have direct access to said streets. Access shall be prohibited by means of deed restrictions or statements on the face of the final plat(s). 27) The following note shall be placed on all final plats: This plat is within an Avigation Easement which requires compliance with airspace restrictions and other identified concerns such as smoke, noise, electrical interference and other conditions associated with normal Tri- Cities Airport operations. 28) All lots within Avigation Easement "C" as determined by the Port of Pasco must be graded to comply with airspace height restrictions for said easement. Grading plans for the impacted lots must be reviewed by the Port prior to submittal to the Engineering Division. 29) An FAA Form 7460 -1 must be submitted to the Port of Pasco and the FAA for the construction of any structure within 20 feet of the height limitations set forth in PMC 25.81.070. 30) The following statement must appear on all final plats within Airport Safety Compatibility Zone Three, the Horizontal Zone, Transitional Zone and the Approach Zone: "Property within this plat may be subject to varying noise levels and vibrations due to proximity to the Tri- Cities Airport. Properties near the airport may be located within height and use restriction zones as described and illustrated by Federal standards and regulations and the City of Pasco Zoning Regulations. There is the potential that standard flight patterns will result in aircraft passing over the properties at low altitudes and during all hours of the day. Future airport expansion including runway extensions may impact the size and number of aircraft utilizing the airport. Developments near the airport should assume that at any given time there will be some impact from air traffic." Passed by the City Council of the City of Pasco this 16`h day of June, 2014. Matt Watkins, Mayor ATTEST: Debra L. Clark, CMC City Clerk 4 APPROVED AS TO FORM: Leland B. Kerr, City Attorney PRELIMINARY PLAT OF MADISON PARK - PLANNED DENSITY DEVELOPMENT yy,f. PASCO, WASHINGTON ',it�',•,'�.y��l.h� LanIW N 5ectien l 1, TCVnih¢9 XOM. R.rq. 7l FasL W.M„ T��tr Rr FnKln Gourry, WasM1ir�len — /� - -- ri NEW LOT W5RMG LOT LU rn ply PHASE 2 PHASE 5 PHASE 4 PHASE I I €ngineering \I2 -6UJ Nv E.Or1 o—\NWC vir INITY PRELIMINARY PUT #fM?AIION uYW �rbry .. NEW GR V OAT 1--�—� GT w Oa a 0 a z V1 fA ¢ Z = uj J w W z CL Y - a I 3 \/ i VICINITY MAP INDEX OF DRAWINGS SHEET NO DESCRPTION I PRELIAINARY PLAT MAP 2 CCW70UR MAP 3 WATER AND MAKAGE MAY 4 SANITARY SFWEER MAP PRELIMINARY PUT #fM?AIION uYW �rbry .. NEW GR V OAT 1--�—� GT w Oa a 0 a z V1 fA ¢ Z = uj J w W z CL Y - a I 3 \/ i I PHASE 8 UTILITIES OWNER SPONSOR I PHASE 9 I I �� E CENEAAL N REPORT TO PLANNING COMMISSION MASTER FILE NO: PP 2014 -003 APPLICANT: EE Resources HEARING DATE. 4/17/ & 5/15 250 NW Franklin 2014 Suite 401 ACTION DATE: 5/15/2014 Bend, OR 97701 BACKGROUND REQUEST: Preliminary Plat: Madison Park Planned Density Development 1. PROPERTY DESCRIPTION: Legal: Franklin County tax parcel #116340142; lying south of Power Line Road, east of Road 52 all within the north half of Section 11, Township 9 North, Range 29 East, WM. General Location: East of Road 52 and south of the easterly projection of Power Line Road. Property Size: 220 Acres Number of Lots Proposed: 387 lots Square Footage_Range of Lots: 8,004ft2 to 21,343 ft' Average Lot Square Footage: 10,897 ft2 2. ACCESS: The property has access from Santa Fe Lane, Santa Cruz Lane and Porto Lane which provide connections to Road 52 and Sandifur Parkway. 3. UTILITIES: Utilities exist in surrounding streets in the subdivision to the south and in Road 52. 4. LAND USE AND ZONING: The site is zoned RS -1 and was originally part of the Northwest Common development approved in 2005. Surrounding properties are zoned and developed as follows: NORTH: AP -20 (Agricultural Production County Zoning) - Farm Ground SOUTH: RS-1 - Northwest Commons Subdivision EAST: RS -1 - Vacant Port property WEST R -1 - New Elementary School 5. COMPREHENSIVE PLAN: The Comprehensive Plan indicates the site is intended for low - density residential development. According to the Comprehensive Plan low - density residential means 2 to 5 dwelling units per acre. The criteria for allocation under the future land use section of Volume II of the Comprehensive Plan (Vol. II, page 17) encourages development of lands designated for residential uses when or where; sewer is available, land is suitable for home sites, when there is a market demand and where there are major circulation routes. Policy H -1 -E encourages the advancement of home ownership and Goal H -2 suggests the City strive to maintain a variety of housing options for residents of the community. Goal LU -2 encourages the maintenance of established neighborhoods and the creation of new neighborhoods that are safe and enjoyable places to live. 6. ENVIRONMENTAL DETERMINATION: The City of Pasco is the lead agency for this project. Based on the SEPA checklist, the adopted City Comprehensive Plan, City development regulations, and other information, a threshold determination resulting in a Determination of Non - Significance (DNS) has been issued for this project under WAC 197- 11 -158. ANALYSIS The proposed plat encompasses a major portion of the Northwest Common Development that was approved in 2005. Northwest Commons was initially limited to 372 sewer connections due to the lack of capacity in the major trunk lines to the south of the development. Studies have since revealed sewer capacity was not as limited as originally thought and the Public Works Department has determined another 240 plus sewer connection could be permitted within the subdivision. As a result septic systems are no longer needed within the development. This represents a substantial change from the original preliminary plat approval. Another major change to the original preliminary plat occurred as the result of the Port of Pasco purchasing 34 acres within the plat for a runway protection zone. Two years ago the Port updated the Airport Master Plan and the Master Plan called for a 1,200 foot extension to one of the runways. The runway extension impacted the plat because a large area fell under the runway protection zone, a zone in which houses should not be built. To insure no houses would be built in the protection zone the Port purchased the land. The Port purchase impacted the street and lot layout of the plat. Due to the changes in the sewer connections and Port property purchase staff suggested the applicant re -apply for preliminary plat approval prior to the preliminary plat approval expiring next fall. The original Northwest Commons plat (now named Madison Park) was approved with a variety of lot sizes ranging from over a half acre for the septic tank lots to 4,500 square feet for the townhouse lots. The density of the plat is determined by the average lot size of 10,000 square feet. Because of the underlying zoning the average lot size must be maintained at 10,000 square feet for any subsequent plat. The applicant is again seeking approval for a Planned Density Development that would allow a range of lot sizes between 8,004 square feet to over 20,000 square feet. 2 The Planned Density Development process was designed to provide a degree of flexibility to the development process. The process can only be used for parcels that contain 20 or more acres. Essentially the under lying zoning is used to determine the number of building lots permitted within a proposed plat. Lots are allow to be varied in size, some smaller and some larger than the minimum specified by the zoning. However as explained above the development is not permitted to exceed the maximum number of lots allowed by the zoning. LOT LAYOUT: The proposed plat contains 387 lots; with the lots varying in size from 8,004 to 21,343 square feet. The average lot size is 10,897 square feet. RIGHTS -OF -WAY: All lots have adequate frontage on streets which will be dedicated. UTILITIES: The developer will be responsible for extending utilities into the plat. A utility easement will be needed along the first 10 of street frontage of all lots. The final location and width of the easements will be determined during the construction design phase of the platting process. The front yard setbacks for construction purposes are larger than the requested easements; therefore the front yard easements will not encroach upon the buildable portions of the lots. The City Engineer will determine the specific placement of fire hydrants and streetlights when construction plans are submitted. As a general rule, fire hydrants are located at street intersections and with a maximum interval of 500 feet between hydrants on alternating sides of the street. Streetlights are located at street intersections, with a maximum interval of 300 feet on residential streets, and with a maximum interval of 150 feet on arterial streets. The intervals for street light placements are measure along the centerline of the road. Street lights are placed on alternating sides of the street. STREET NAMES: Streets within the plat will all be named prior to final platting. IRRIGATION: The municipal code requires the installation of irrigation lines as a part of infrastructure improvements. WATER RIGHTS: The assignment of water rights is a requirement for subdivision approval. The developer has previously deeded the water rights to the City. 3 FINDINGS OF FACT State law (RCW 58.17. 110) and the Pasco Municipal Code require the Planning Commission to develop Findings of Fact as to how this proposed subdivision will protect and enhance the health, safety and general welfare of the community. The following is a listing of proposed "Findings of Fact ": Prevent Overcrowding: With an average lot size of 10,897 square feet the proposed development will address the overcrowding concern by providing manageable lots and usable open spaces. RS -1 zoning requires a 20 foot front yard setback and no more than 40 percent lot coverage which also addresses the overcrowding issue. Parks Opens Space /Schools: The plat contains a neighborhood park which the developer must improve. There are four other neighborhood parks within a mile of the proposed plat. The School District is in the process of building four new schools within the community. The City is required by RCW 58.17.110 to make a finding that adequate provisions are being made to ameliorate the impacts of the proposed subdivision on the School District. At the request of the School District the City enacted a school impact fee in 2012. The imposition of this impact fee addresses the requirement to ensure there are adequate provisions for schools (See attached letter). All new residential development pays a school impact fee (when permits are issued) to assist with the provision of schools within the community. The preliminary plat was submitted to the School District for review. No additional requests were made by the School District for the City to address RCW 58.17.110. (See attached PSD letter) Effective Land Use /Orderly Development: The plat is laid out for low- density residential development as identified in the Comprehensive Plan. The maximum density permitted under the Comprehensive Plan is 5 dwelling units per acre. The proposed development with about 3.9 dwelling units per acre is an orderly continuation of the existing residential subdivisions to the south. Safe Travel & Walking Conditions: The Plat will connect to the community through the existing network of streets. Sidewalks are installed at the time homes are built on individual lots. The sidewalk will be constructed to current City standards and to the standards of the American's with Disabilities Act (ADA). The ADA handicap ramps at the corners of each intersection will be installed with the construction of the road improvements. Adequate Provision of Municipal Services: All lots within the plat will be provided with water, sewer and other utilities, 4 Provision of Housing for State Residents: The proposed preliminary plat contains 387 building lots, providing opportunities for the construction of 387new homes for Pasco residents. Adequate Air and Light: The maximum lot coverage limitations and building setbacks will assure that adequate movement of air and light is available to each lot. Proper Access & Travel: The access streets through the plat will be paved and developed to City standards to assure that proper access is maintained to each lot. (The discussion under safe travel above applies to this section also.) Comprehensive Plan Policies & Maps: The Comprehensive Plan designates the plat site for low- density and mixed - residential development. Policies of the Comprehensive Plan suggest the City strive to maintain a variety of housing for residents. Airport Consideration: The proposed preliminary plat falls within the Federal Aviation Administration (FAA) Part 77 Imaginary Surfaces which defines development height restrictions around the Tri- Cities Airport. The preliminary plat is also partially within the Airport Safety Compatibility Zones (ASCZ) as discussed in PMC 25.81. The Port of Pasco has indicated approximately 17 lots in the proposed preliminary plat are located in an avigation easement where the ground elevation is within 10 feet of the airspace. Extensive grading will be needed on these lots to enable houses to be built. Other Findings: • The site is within the Pasco Urban Growth Area Boundary. • The State Growth Management Act requires urban growth and urban densities to occur within Urban Growth Boundaries. • The Comprehensive Plan identifies the site for low- density residential development. • The site was zoned RS -1 in 2005. • The site was originally included in the Northwest Commons preliminary plat that was approved by the City Council in 2005. • The original Northwest Commons plat contained 177 lots that were to be serviced by septic tanks. • Additional studies since 2005 indicate there is capacity in the sewer trunk lines to accommodate over 600 sewer connections within the property in question. 5 • Thirty -four acres of the original Northwest Commons preliminary plat now falls under a runway approach zone that prohibits residential development. The Port of Pasco has purchased this property to protect future expansions at the Tri Cities Airport. • The Housing Element of the Comprehensive Plan encourages the development of a variety of residential densities and housing types. • The Transportation Element of the Comprehensive Plan encourages the interconnection of neighborhood streets to provide for the disbursement of traffic. • Per the ITE Trip Generation Manual 8t1 Addition the proposed subdivision, when fully developed, will generate approximately 3703 vehicle trips per day. • The current traffic impact fee is $709 per dwelling unit. The impact fees are collected at the time permits are issued and said fees are used to make traffic improvements and add traffic signals in the I -182 Corridor when warranted. • RCW 58.17.110 requires the City to make a finding that adequate provisions have been made for schools before any preliminary plat is approved. • The City of Pasco has adopted a school impact fee ordinance compelling new housing developments to provide the School District with mitigation fees. The fee was effective April 16, 2012. • Past correspondence from the Pasco School District indicates impact fees address the requirement to ensure adequate provisions are made for schools. CONCLUSIONS BASED ON THE FINDINGS OF FACT Before recommending approval or denial of the proposed Plat the Planning Commission must develop Findings of Fact from which to draw its conclusion (P.M-C. 26.24.070) therefrom as to whether or not: (1) Adequate provisions are made for the public health, safety and general welfare and for open spaces, drainage ways, streets, alleys, other public ways, water supplies, sanitary wastes, parks, playgrounds, transit stops, schools and school grounds, sidewalks for safe walking conditions for students and other public needs; The proposed plat will be required to develop under the standards of the Pasco Municipal Code and the standard specifications of the City Engineering Division. These standards for streets, sidewalks, and other infrastructure improvements were designed to ensure the public health, safety and general welfare of the community are secured. These standards include provisions for streets, drainage, water and sewer service and the provision for dedication of right -of -way. The preliminary plat was forwarded to the Franklin County PUD, the Pasco School District, Cascade Gas, Charter Cable and Ben - Franklin Transit Authority for review and comment. The PUD requested easements along the front of all lots for utility service. Based on the School Districts Capital Facilities Plan the City collects school mitigation fees for each new dwelling unit. The fee is paid at the time of building permit issuance. In response to past subdivision proposals the School District, by letter dated August 30, 2012, has explained the collection of impact fees addresses the requirements of RCW 58.17.110. A neighborhood park will be built within the confines of the plat. Four other neighborhood parks are located within one mile of the proposed subdivision. (2) The proposed subdivision contributes to the orderly development and land use patterns in the area; The proposed plat makes efficient use of vacant land and will provide for additional housing following the designations of the Comprehensive Plan and the established zoning. The proposed plat will also provide for the looping of utilities and interconnectivity of streets as supported in the Comprehensive Plan. (3) The proposed subdivision conforms to the policies, maps and narrative text of the Comprehensive Plan; The Comprehensive Plan land use map designates the site for low- density and residential development. The Comprehensive Plan describes Low - density development as 2 to 5 single - family dwelling units per acre. The policies of the plan encourage the advancement of home ownership (H -3 -B). Plan Goal H -2 suggests the City strive to maintain a variety of housing options for residents of the community while Plan Policy H -1 -B supports the protection and enhancement of the established character of viable residential neighborhoods. (4) The proposed subdivision conforms to the general purposes of any applicable policies or plans which have been adopted by the City Council; Development plans and policies have been adopted by the City Council in the form of the Comprehensive Plan. The proposed subdivision conforms to the policies, maps and narrative text of the Plan as noted in number three above. (5) The proposed subdivision conforms to the general purposes of the subdivision regulations. The general purposes of the subdivision regulations have been enumerated and discussed in the staff analysis and Findings of Fact. The Findings of Fact indicate the subdivision is in conformance with the general purposes of the subdivision regulations provided certain mitigation measures (i.e. school, park and traffic fees) are included in approval conditions. (6) The public use and interest will be served by approval of the proposed subdivision. If approved the proposed plat will be developed in accordance with all City standards designed to insure the health, safety and general welfare of the community are met. The Comprehensive Plan will be implemented through development of this Plat. These factors will insure the public use and interest are served. Modified Conditions for MF # 2014 -003 Madison Park PLAT APPROVAL CONDITIONS 1. At the time lots are developed, all abutting roads and utilities shall be installed to City standards as approved by the City Engineer. This includes, but is not limited to water, sewer and irrigation lines, streets, street lights and storm water retention. The handicapped accessible pedestrian ramps must be completed with the street and curb improvements prior to final plat approval. All proposed utilities must be installed underground by the developer at the developer's expense including any power lines along Road 52. 2. Santa Cruz Lane between Porto Lane and Tyre Lane shall be constructed with the first phase of the development. 3. The developer shall install a properly designed irrigation system with stubs to all lots in the subdivision for future irrigation needs. All easements /rights -of -way necessary to convey the irrigation system to and through the proposed plat must be conveyed to the City of Pasco. The irrigation lines shall run in easements/ rights -of -way as directed by the City Engineer. 4. Excess right -of -way along Power Line Road and Road 52 must be landscaped. Said landscaping shall include irrigation, turf and trees. Trees shall be planted at 50 foot intervals. The species of the trees will be determined by the Parks Department. All landscaping and irrigation plans shall be reviewed and approved by the Parks Department prior to installation. Water usage for City right -of -way landscaping shall come from 8 a source as approved by the City of Pasco with the connection and meter fees paid for by the developer. 5. The developer/ builder shall pay the City a "common area maintenance fee" of $475 per lot upon issuance of building permits for homes. These funds shall be placed in a fund and used to finance the maintenance of arterial boulevard strips. The City shall not accept maintenance responsibility for the landscaping abutting said streets until such time as all fees are collected for each phase that abut said streets. 6. The developer/ builder shall pay the "traffic impact fee" established by ordinance at the time of issuance of building permits for homes. Fees collected shall be placed in a fund and used to finance signalization and other improvements necessary to mitigate traffic impacts on the circulation system within the I -182 corridor. 7. The developer shall be responsible for improving and dedicating the park site to the City. The park improvement plans must be reviewed and approved by the Parks Division prior to construction. The park must be built and dedicated before permits have been issued for 250 houses. The community park fee must be collected with the issuance of a building permit for each house. 8. The developer/ builder shall mitigate impacts to the Public School System by the "school impact fee" established by Ordinance at the time of issuance of building permits for homes. 9. No utility vaults, pedestals, or other obstructions will be allowed at street intersections. 10. All corner lots and other lots that present difficulties for the placement of yard fencing shall be identified in the notes on the face of the final plat(s). 11. All storm water is to be disposed of per City and State codes and requirements. 12. The developer shall insure active and ongoing dust, weed and litter abatement activities occur during the construction of the subdivision and construction of dwellings thereon. 13. The developer shall prepare a dust, weed and erosion control plan to be approved by the City prior to approval of any construction drawings for the first phase of the subdivision. 14. The developer shall be responsible for the creation of record drawings. All record drawings shall be created in accordance with the requirements detailed in the Record Drawing Requirements and Procedure form provided by the Engineering Division. This form shall be signed by the developer prior to construction plan approval. 15. All engineering designs for infrastructure and final plat(s) drawings shall utilize the published City of Pasco Vertical Control Datum and shall be identified on each such submittal. 01 16. The final plat(s) shall contain a 10 -foot utility easement parallel to all streets unless otherwise required by the Franklin County PUD. Depending on load needs the PUD will need 15 foot easements for select streets to be determined at the design stage of the development, 17. The final plat(s) shall contain the following Franklin County Public Utility District statement: "The individual or company making improvements on a lot or lots of this Plat is responsible for providing and installing all trench, conduit, primary vaults, secondary junction boxes, and backfill for the PUD's primary and secondary distribution system in accordance with PUD specifications; said individual or company will make full advance payment of line extension fees and will provide all necessary utility easements prior to PUD construction and /or connection of any electrical service to or within the plat ". 18. Street lighting must be installed to the City of Pasco /Franklin County PUD standards and as directed by the City Engineer. Residential street lights are typically installed every 300 feet, and collector/ arterial type street lights are typically installed every 150 feet. Street light positioning is alternating and is measured along the centerline of the road. 19. Prior to the City of Pasco accepting construction plans for review the developer must enter into a Storm Water Maintenance Agreement with the City. The developer will be responsible for obtaining the signatures of all parties required on the agreement and to have the agreement recorded with the Franklin County Auditor. The original signed and recorded copy of the agreement must be presented to the City of Pasco at the intake meeting for construction plans, 20. The developer will be required to conform to all conditions set forth in the Storm Water Maintenance Agreement including, but not limited to, regular cleaning and maintenance of all streets, gutters, catch basins and catch basin protection systems, Cleaning shall occur on a regular basis to ensure that no excess buildup of sand, trash, grass clippings, weeds or other debris occurs in any portion of the streets, gutters, or storm water collection facilities. Cleaning and upkeep of the streets, gutters, and storm water collection facilities must be to the satisfaction of the City Engineer. The developer will be responsible for operating and maintaining the storm drain system in accordance with the Storm Water Maintenance Agreement for a period of up to five years from the date of final plat(s) approval depending on the build out schedule for homes on the lots. 21. The developer will be required to comply with the City of Pasco Civil Plan Review process. 22. The developer shall install a common Estate type masonry wall /fence 6 feet in height adjacent the rear line of all lots backing on Road 52 and Power Line Road as a part of the infrastructure improvements associated with each phase abutting said streets. Prior to installation the City must approve said wall /fence. Consideration must be given to the vision 10 23 24 25 26 27. 29 triangle at the intersection of streets. The City may make repairs or replace the fencing as needed. Property owners adjoining said fence shall be responsible for payment of all costs associated with maintenance and upkeep. These fencing requirements shall be noted clearly on the face of the final plat(s). A concrete mow strip shall be installed under any common fence as directed by the City Parks Division and shall be approved by the Parks Department prior to installation. The developer shall install landscaping (turf) and irrigation within the gas line easement and the Home Owners Association established for the plat shall maintain said landscaped area. A note shall be place on all final plats explaining the obligation of the Home Owners Association to maintain the gas line easement landscaping. The developer shall install a common Estate type masonry wall /fence 6 feet in height around the City well site on Road 52. Said wall must match the wall constructed along Road 52. Property owners adjoining said fence shall be responsible for payment of all costs associated with maintenance and upkeep. These fencing requirements shall be noted clearly on the face of the final plat(s). The developer shall install a common Estate type masonry wall /fence 6 feet in height around the irrigation well sites abutting Power Line Road. Said walls must match the wall constructed along Road 52 and conform to all front yard setback provisions. Property owners adjoining said fence shall be responsible for payment of all costs associated with maintenance and upkeep. These fencing requirements shall be noted clearly on the face of the final plat(s). Required front yard setbacks must be maintained along all interior streets. Lots abutting Power Line Road and Road 52 shall not have direct access to said streets. Access shall be prohibited by means of deed restrictions or statements on the face of the final plat(s). The following note shall be placed on all final plats: This plat is within an Avigation Easement which requires compliance with airspace restrictions and other identified concerns such as smoke, noise, electrical interference and other conditions associated with normal Tri- Cities Airport operations. All lots within Avigation Easement "C" as determined by the Port of Pasco must be graded to comply with airspace height restrictions for said easement. Grading plans for the impacted lots must be reviewed by the Port prior to submittal to the Engineering Division. An FAA Form 7460 -1 must be submitted to the Port of Pasco and the FAA for the construction of any structure within 20 feet of the height limitations set forth in the Transition Zone. 30. The following statement must appear on all final plats within Airport Safety Compatibility Zone Three, the Horizontal Zone, Transitional Zone and the Approach Zone: "Property within this plat may be subject to varying noise levels and vibrations due to proximity to the Tri - Cities 11 Airport. Properties near the airport may be located within height and use restriction zones as described and illustrated by Federal standards and regulations and the City of Pasco Zoning Regulations. There is the potential that standard flight patterns will result in aircraft passing over the properties at low altitudes and during all hours of the day. Future airport expansion including runway extensions may impact the size and number of aircraft utilizing the airport. Developments near the airport should assume that at any given time there will be some impact from air traffic." RECOMMENDATION MOTION: I move to adopt Findings of Fact and Conclusions therefrom as contained in the May 15, 2014 staff report. MOTION: I move based on the Findings of Fact and Conclusions, as adopted, the Planning Commission recommend the City Council approve the Preliminary Plat for Madison Park with conditions as listed in the May 15, 2014 staff report. 12 Land Itemo Preliminary Plat (387 Lots) Use Applicant: EE Resources N Map File #-, PP 2014 -003 Agriculture (County) Elementary School (County) Church PARLEY UK Y z O -� FD U SAND SITE Vacant M=0 R-S-1 (County) AP -20 (County) R -S -1 211161 U 1 7%11 1 Tom me I, —',IN ,I I I I R -S -1 SITE 4 � •rs +i� sr ���� i y' f1 ~ 1�r { t �f..z r i phi �.•Q' i / 1SNIkM1.},.dl ),yha l'kr(V�.} �Y 9 ,,fill ^p W.1 Pt, 4 ur a MA KvA ' l k � t'�`k i Jf I Vf n 4 D rn o� O O ,f i I t� J F • �f. i i 4, i t JIB. r ,F 7 yyy yyy I'35'' A?� yy ? i 't Y jt Y rn CCS W r., o� 0 0 a` � ,�' �.' -� "� i.. � ,�� 4•.,. 4 �y Y sl°"m ..r.,�:T� ' �' �rM'++.a+�'��}'`i,�T.,i`�y`•.r1 -_.•i ! 71 t 7 t ! t�• 1 ~P 'mot �.1 jr - i � 4 5 g' x �} ,w } .�•{ a � RAC , t a �+ Ar I k\ � b4C � � 0 0 � 2� � ° 2 � • ` ' i • -+t � Planning Commission Minutes 4/17/14 A. Preliminary Plat Preliminary Plat Madison Park Planned Density Development (EE Resources) Chairwoman Greenaway read the master file number and asked for comments from staff. David McDonald, City Planner, provide background information on the proposed preliminary plat. He stated the plat was originally part of the Northwest Commons Plat approved by City Council in the September of 2005. The original preliminary plat is valid for another year but, a number of things have changed since the original approval that staff suggested the developer apply for a new preliminary plat. When the development was originally approved there was a portion of it that was approved for septic tank use. At the time there were only about 372 lots could be served with sewer the rest needed septic tanks. Since 2005 the modeling has been refined and it is believed that all of the lots in the development can now have sewer. Also since the original approval the Port of Pasco updated the Airport Master Plan which the Planning Commission reviewed a year ago as well as zoning regulations relating to that plan. Due to changes in the Airport Master Plan and proposed runway extension the Port purchased about 30 acres of the development. With these changes the plat needed to be reconfigured. Mr. McDonald explained the planned density development process and provided information on the lot sizes. The minimum lot size being proposed is just over 8,000 square feet and the largest almost 21,000 square feet. The average lot size is 10,897 square feet. Commissioner Portugal asked if septic tanks will not be allowed. Mr. McDonald answered that is correct there will not be septic tanks. Commissioner Bachart discussed traffic impacts on Road 68 due to additional homes and residents. Mr. McDonald responded that the traffic impact fee was based on a study done taking the entire I -182 Corridor Area into account. The modeling for the traffic study assumed a full built -out for the area. Rick White, Community & Economic Development Director, added that there will be signal improvements including channel improvements to improve left -hand turns on Road 68. Commissioner Bachart asked if there would be a point when the improvements will be triggered. Mr. White answered that there is not. The Growth Management Act allows communities to set their own level of service for traffic facilities. While Road 68 might seem bothersome at times it actually functions as it should most of the time. Commissioner Hoekstra asked how large the site is altogether. Mr. McDonald stated 220 acres. Commissioner Hoekstra asked about the location and size of the park proposed for the neighborhood. Mr. McDonald stated that it will be slightly less than 5 acres. The park will be adjacent to an open space /greenway. Commissioner Hoekstra discussed the school impact fee and letter from the School District. Mr. McDonald responded that the school impact fee has been in effect for a few years since the School District updated their Capital Facilities Plan and was adopted by City Council. Mr. McDonald added that staff notified the public in a timely manner regarding this application, however, some of the reviewing agencies were not given enough time so staff is requesting the public hearing be continued to allow those reviewing agencies more time to comment. Commissioner Portugal asked if all lots would have irrigation water. Mr. McDonald answered yes. Chairwoman Greenaway opened the hearing for public comment. Ron Foraker, 6720 W. Park Street, spoke on behalf of the airport along with Spencer Montgomery of JUB Engineers regarding this application. He asked the Planning Commission to consider allowing the Port of Pasco to add comments for the next meeting in May. Commissioner Hoekstra asked if there would be emergency services in terms of disasters given the proximity of the airport to the residential area as well as access. Mr. Foraker addressed the topic of emergency services. The capability of Port equipment was discussed along with the use of the dirt roads along the perimeter of the airport. Jaime Morales, 4705 Northwest Commons, spoke on behalf of this application. He asked if the developer would be the same developer who previously built near this location. Mr. McDonald stated that there are two parts to this application. There is a developer who is requesting approval of the plat. He builds the roads, sidewalks, street lights and sewer lines and then sells the lots to the builders. The current developer may make the lots available to Viking Homes or New Tradition or another builder. It is uncertain but recently they have been Viking Homes. Commissioner Hoekstra asked if Mr. Morales had a concern with the builders, such as Viking Homes or New Tradition. Mr. Morales stated that he thought there might be concern if apartments or low income was building in the area but after listening to the discussion it will be single - family residential homes and there is no concern. Mr. McDonald added that the property is zoned RS -1 for low- density residential which would not allow multi - family dwelling units regardless of the builder or developer. Commissioner Khan moved, seconded by Commissioner Polk, to continue the public hearing on the proposed preliminary plat to the May 15, 2014 meeting. The motion passed unanimously. Planning Commission Minutes 5/15/14 C. Preliminary Plat Preliminary Plat Madison Park Planned Density Development JEE Resources) (MF# PP2014 -0031 Continued _from April 17 2014 MeetinA Chairman Cruz read the master file number and asked for comments from staff. Mr, McDonald reminded the Commission that a public hearing was held in the previous month but was continued to allow for outside agencies to have more time to review and submit comments, particularly the Port of Pasco. The Port recently updated their master plan and had concerns with the proposed development related to airspace penetrations and the elevation of the development. Mr. McDonald briefly reviewed additional conditions that resulted from discussion and comments from the Port. Those conditions related to statements on the final plats, avigation easements and the need to lower the elevation of a number of lots before houses could be built. Ron Foraker, 6720 W. Park Street, spoke on behalf of the Port of Pasco as the Airport Manager. He stated that the airport has worked extensively with City Staff. Spencer Montgomery, 2810 W. Clearwater Avenue, spoke on behalf of JUB Engineers for this project. He stated that this is the first development since the overlay zone was established and will probably be the most challenging one due to its proximity to the airport and due to the topography. This is why grading will be necessary to bring the homes to a lower elevation due to safety issues, With no further comments the public hearing closed. Commissioner Khan asked for clarification on the condition requiring the note on the plat and if future property owners will be aware of the noise and safety. Mr. McDonald answered that the reason for the note on the plat is for the public to be aware of the airport activity. Title Companies will be able to see the note as well as the public as it will be recorded at the Court House. Commissioner Khan asked how the topography will change and where the excess soil or dirt will go. Mr. McDonald responded that in this particular case the dirt will be pushed to another area on the property where the land is lower in elevation. Commissioner Khan moved, seconded by Commissioner Greenaway, to adopt the findings of fact and conclusions therefrom as contained in the May 15, 2014 staff report. The motion passed unanimously. Commissioner Khan moved, seconded by Commissioner Greenaway, based on the findings of fact and conclusions as adopted, the Planning Commission recommend the City Council approve the Preliminary Plat for Madison Park with conditions as listed in the May 15, 2014 staff report. The motion passed unanimously. AGENDA REPORT FOR: City Council May 23, 2014 TO: Gary Crutchfie anager Workshop Mtg.: 6/9/14 Rick Ter-way, ct dmin & Community Services Regular Mtg.: 6/16/14 FROM: Dunyele Mason, Financial Services Manager SUBJECT: Local Government Investment Pool I. II. II. IV. V. REFERENCE(S): 1. Local Government Investment Pool — Proposed Resolution 2. Local Government Investment Pool — Prospectus Local Government Investment Pool — Transaction Authorization Form ACTION REQUESTED OF COUNCIL /STAFF RECOMMENDATIONS: 6/4: Discussion 6/16: MOTION: I move to adopt Resolution No. , naming Dunyele Mason as the "authorized individual" to authorize all amendments, changes or alterations to the Local Government Investment Pool Transaction Authorization Form and to acknowledge the terms and conditions of participation as outlined in the prospectus. FISCAL IMPACT: HISTORY AND FACTS BRIEF: A) The city utilizes the investment expertise of the State Treasurer's office and invests its excess cash into the Local Government Investment Pool (LGIP). In an effort to provide more clarity regarding how the LGIP operates and as a result of recently amended state WACs the LGIP has created and distributed a prospectus. B) As a condition of continued participation in the LGIP, the State Treasurer is requiring each investor to provide a copy of a Resolution that acknowledges the governing body has read, received and understands the prospectus as well as specifically designates, by name, the "authorized individual" that is authorized to create all amendments, changes and alterations to the Transaction Authorization Form (which controls who is allowed to move money and to designate which bank accounts money comes in and out of). Changes to the "authorized individual" must be made by a new resolution. DISCUSSION: C) The state is requesting a person's name rather than title to be specifically named by Resolution as the "authorized individual." As the Financial Services Manager is already bonded, staff recommends that Dunyele Mason be so named. 8(c) RESOLUTION NO. A RESOLUTION AUTHORIZING INVESTMENT OF MONIES IN THE LOCAL GOVERNMENT INVESTMENT POOL. WHEREAS, pursuant to Chapter 294, Laws of 1986, the Legislature created a trust fund to be known as the Public Funds Investment Account [commonly referred to as the Local Government Investment Pool (LGIP)] for the contribution and withdrawal of money by an authorized governmental entity for purposes of investment by the Office of the State Treasurer; and WHEREAS, from time to time it may be advantageous to the authorized governmental entity, the City of Pasco, the "governmental entity," to contribute funds available for investment in the LGIP; and WHEREAS, the investment strategy for the LGIP is set forth in its policies and procedures; and WHEREAS, any contributions or withdrawals to or from the LGIP made on behalf of the governmental entity shall be first duly authorized by the Pasco City Council, the "governing body" or any designee of the governing body pursuant to this resolution or a subsequent resolution; and WHEREAS the governmental entity will cause to be filed a certified copy of said resolution with the Office of the State Treasurer; and WHEREAS the governing body and any designee appointed by the governing body with authority to contribute or withdraw funds of the governmental entity has received and read a copy of the prospectus and understands the risks and limitations of investing in the LGIP; and WHEREAS, the governing body attests by the signature of its members that it is duly authorized and empowered to enter into this agreement, to direct the contribution or withdrawal of governmental entity monies, and to delegate certain authority to make adjustments to the incorporated transactional forms, to the individuals designated herein. NOW THEREFORE, BE IT RESOLVED that the governing body does hereby authorize the contribution and withdrawal of governmental entity monies in the LGIP in the manner prescribed by law, rule, and prospectus. BE IT FURTHER RESOLVED that the governing body has approved the Local Government Investment Pool Transaction Authorization Form (Form) as completed by Dunyele Mason and incorporates said form into this resolution by reference and does hereby attest to its accuracy. BE IT FURTHER RESOLVED that the governmental entity designates Dunyele Mason, Finance Manager, as the "authorized individual" to authorize all amendments, changes, or alterations to the Form or any other documentation including the designation of other individuals to make contributions and withdrawals on behalf of the governmental entity. BE IT FURTHER RESOLVED that this delegation ends upon the written notice, by any method set forth in the prospectus, of the governing body that the authorized individual has been terminated or that his or her delegation has been revoked. The Office of the State Treasurer will rely solely on the governing body to provide notice of such revocation and is entitled to rely on the authorized individual's instructions until such time as said notice has been provided. BE IT FURTHER RESOLVED that the Form as incorporated into this resolution or hereafter amended by delegated authority, or any other documentation signed or otherwise approved by the authorized individual shall remain in effect after revocation of the authorized individual's delegated authority, except to the extent that the authorized individual whose delegation has been terminated shall not be permitted to make further withdrawals or contributions to the LGIP on behalf of the governmental entity. No amendments, changes, or alterations shall be made to the Form or any other documentation until the entity passes a new resolution naming a new authorized individual; and BE IT FURTHER RESOLVED that the governing body acknowledges that it has received, read, and understood the prospectus as provided by the Office of the State Treasurer. In addition, the governing body agrees that a copy of the prospectus will be provided to any person delegated or otherwise authorized to make contributions or withdrawals into or out of the LGIP and that said individuals will be required to read the prospectus prior to making any withdrawals or contributions or any further withdrawals or contributions if authorizations are already in place. 2014. PASSED by the City Council of the City of Pasco, Washington, this 16th day of June, SIGNED in authentication of its passage this day of , 2014. Matt Watkins, Mayor ATTEST: Debra Clark, City Clerk Leland B. Kerr, City Attorney LOCAL GOVERNMENT INVESTMENT POOL Prospectus January 2014 James L. Mcintire Washington State Treasurer Contents The LGIP Local Government Investment Pool — Money Market Fund III. Management 3 -4 4 -9 IV. Miscellaneous 9 -10 I. The LGIP The Local Government Investment Pool (the "LGIP ") is an investment pool of public funds placed in the custody of the Office of the Washington State Treasurer (the "State Treasurer") for investment and reinvestment as defined by RCW 43.250.020. The purpose of the LGIP is to allow eligible governmental entities to participate with the state in the investment of surplus public funds, in a manner that optimizes liquidity and return on such funds. in establishing the LGIP, the legislature recognized that not all eligible governmental entities are able to maximize the return on their temporary surplus funds, and therefore it provided a mechanism whereby they may, at their option, utilize the resources of the State Treasurer to maximize the potential of their surplus funds while ensuring the liquidity of those funds. The State Treasurer has established a sub -pool within the LGIP whose shares are offered by means of this Prospectus: The LGIP -Money Market Fund (the "LGIP -MMF" or the "Fund "). The State Treasurer has the authority to establish additional sub -pools in the future. The Fund offered in this Prospectus seeks to provide current income by investing in high - quality, short term money market instruments. These standards are specific to the Fund, as illustrated in the following table. The LGIP -MMF offers daily contributions and withdrawals. FUND SNAPSHOT The table below provides a summary comparison of the Fund's investment types and sensitivity to interest rate risk. This current snapshot can be expected to vary over time. LGIP -Money Market Fund Current Investments (as of November 1, 2013) Fees and Expenses Cash Bank Deposits US Treasury bills Repurchase agreements US Government agency ob ns 60 days Administrative Fee. The State Treasurer charges pool participants a fee representing administration and recovery costs associated with the operation of the Fund. The administrative fee accrues daily from pool participants' earnings prior to the earnings being posted to their account. The administrative fee will be paid monthly. in the event that there are no earnings, the administrative fee will be deducted from principal. The chart below illustrates the operating expenses of the LGIP -MMF for past years, expressed in basis points as a percentage of fund assets. Local Government Investment Pool -MMF Operating Expenses by Fiscal Year (in Basis Points) 2006 2007 2008 2009 2010 2011 2012 2013 Total Operating Expenses 1.12 0.96 0.84 0.88 0.64 0.81 0.68 0.87 (1 basis point =0.0196) Because most of the expenses of the LGIP -MMF are fixed costs, the fee (expressed as a percentage of fund assets) will be affected by: (i) the amount of operating expenses; and (ii) the assets of the LGIP -MMF. The table below shows how the fee (expressed as a percentage of fund assets) would change as the fund assets change, assuming an annual fund operating expenses amount of $800,000. Fund Assets $6.0 bn $8.0 bn $10.0 bn Total Operating Expenses (in Basis Points) 1.33 1.0 .80 Portfolio Turnover: The Fund does not pay a commission or fee when it buys or sells securities (or "turns over" its portfolio). However, debt securities often trade with a bid /ask spread. Consequently, a higher portfolio turnover rate may generate higher transaction costs that could affect the Fund's performance. 11. Local Government Investment Pool - Money Market Fund Investment Objective The LGIP -MMF will seek to effectively maximize the yield while maintaining liquidity and a stable share price of $1. ]Principal Investment Strategies The LGIP -MMF will seek to invest primarily in high - quality, short term money market instruments. Typically, at least 55% of the Fund's assets will be invested in US government securities and repurchase agreements collateralized by those securities. The LGIP -MMF means a sub -pool of the LGIP whose investments will primarily be money market instruments. The LGIP -MMF will only invest in eligible investments permitted by state law. The LGIP -MMF will not be an SEC - registered money market fund and will not be required to follow SEC Rule 2a -7. Investments of the LGIP -MM F will conform to the LGIP Investment Policy, the most recent version of which will be posted on the LGIP website and will be available upon request. Principal Risks of Investing in the LGIP -Money Market Fund Counterparty Credit Risk. A party to a transaction involving the Fund may fail to meet its obligations. This could cause the Fund to lose the benefit of the transaction or prevent the Fund from selling or buying other securities to implement its investment strategies. interest Rate Risk. The LGIP -MMF's income may decline when interest rates fall. Because the Fund's income is based on short -term interest rates, which can fluctuate significantly over short periods, income risk is expected to be high. In addition, interest rate increases can cause the price of a debt security to decrease and even lead to a loss of principal. 4 Liquidity Risk. Liquidity risk is the risk that the Fund will experience significant net withdrawals of Fund shares at a time when it cannot find willing buyers for its portfolio securities or can only sell its portfolio securities at a material loss. Management Risk. Poor security selection or an ineffective investment strategy could cause the LGiP -MMF to underperform relevant benchmarks or other funds with a similar investment objective. Issuer Risk. The LGIP -MMF is subject to the risk that debt issuers and other counterparties may not honor their obligations. Changes in an issuer's credit rating (e.g., a rating downgrade) or the market's perception of an issuer's creditworthiness could also affect the value of the Fund's investment in that issuer. The degree of credit risk depends on both the financial condition of the issuer and the terms of the obligation. Also, a decline in the credit quality of an issuer can cause the price of a money market security to decrease. Securities Lending Risk and Reverse Repurchase Agreement Risk. The LGIP -MMF may engage in securities lending or in reverse repurchase agreements. Securities lending and reverse repurchase agreements involve the risk that the Fund may lose money because the borrower of the Fund's securities fails to return the securities in a timely manner or at all or the Fund's lending agent defaults on its obligations to indemnify the Fund, or such obligations prove unenforceable. The Fund could also lose money in the event of a decline in the value of the collateral provided for loaned securities or a decline in the value of any investments made with cash collateral. Risks Associated with use of Amortized Cost. The use of amortized cost valuation means that the LGIP -MMF's share price may vary from its market value NAV per share. In the unlikely event that the State Treasurer were to determine that the extent of the deviation between the Fund's amortized cost per share and its market -based NAV per share may result in material dilution or other unfair results to shareholders, the State Treasurer may cause the Fund to take such action as it deems appropriate to eliminate or reduce to the extent practicable such dilution or unfair results. An investment In the LGIP -MMF is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the Fund seeks to preserve the value of investments at $1 per share, pool participants could lose money by investing in the LGIP -MMF. There is no assurance that the LGIP -MMF will achieve its investment objective. Performance The following information is intended to address the risks of investing in the LGIP -MMF. The information illustrates changes in the performance of the LGIP -MMF's shares from year to year. Returns are based on past results and are not an indication of future performance. Updated performance information may be obtained on our website at www.tre.wa.gov or by calling the LGIP toil -free at 800- 331 -3284. 5 Fiscal Year -by -Year Returns: Net Yield Local Government Investment Pool 6.00% 5.21% 5.001 4.14% 4.04% 4.00% 3.00% 2.13% 2.00 °fo - - -- ° 1.059'° 1.00% T T - ° 0.22% 0.14% 0.17% 0.00% J.- H f 771 - 1.00% — – - -- -2.00% -3.00% 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 Local Government Investment Pool -Money Market Fund Averap,e Accrued Net Yield 1 Year 9 years 5 years SQ years 0.17% 0.19% .52% 1.94% Transactions: 1LGIP -MMF General Information The minimum transaction size (contributions or withdrawals) for the LGIP -MMF will be five thousand dollars. The State Treasurer may, in its sole discretion, allow for transactions of less than five thousand dollars. Valuing Shares The LGIP -MMF will be operated using a net asset value (NAV) calculation based on the amortized cost of all securities held such that the securities will be valued at their acquisition cost, plus accrued income, amortized daily. The Fund's NAV will be the value of a single share. NAV will normally be calculated as of the close of business of the NYSE, usually 4:00 p.m. Eastern time. If the NYSE is closed on a particular day, the Fund will be priced on the next day the NYSE is open. A NAV will not be calculated and the Fund will not process contributions and withdrawals submitted on days when the Fund is not open for business. The time at which shares are priced and until which contributions and withdrawals are accepted is specified below and may be changed as permitted by the State Treasurer. To the extent that the LGIP -MMF's assets are traded in other markets on days when the Fund is not open for business, the value of the Fund's assets may be affected on those days. In addition, trading in some of the Fund's assets may not occur on days when the Fund is open for business. Transaction Limitation The State Treasurer reserves the right at its sole discretion to set a minimum and /or maximum transaction amount from the LGIP -MMF and to limit the number of transactions, whether contribution, withdrawal, or transfer permitted in a day or any other given period of time. The State Treasurer also reserves the right at its sole discretion to reject any proposed contribution, and in particular to reject any proposed contribution made by a pool participant engaged in behavior deemed by the State Treasurer to be abusive of the LGIP -MMF. A pool participant may transfer funds from one LGIP -MMF account to another subject to the same time and contribution limits as set forth in WAC 210.10.060. Contributions Pool participants may make contributions to the LGIP -MMF on any business day. All contributions will be effected by electronic funds transfer to the account of the LGIP -MMF designated by the State Treasurer. It is the responsibility of each pool participant to pay any bank charges associated with such electronic transfers to the State Treasurer. Failure to wire funds by a pool participant after notification to the State Treasurer of an intended transfer will result in penalties. Penalties for failure to timely wire will be assessed to the account of the pool participant responsible. Notice. To ensure same day credit, a pool participant must inform the State Treasurer of any contribution over one million dollars no later than 9 a.m. on the same day the contribution is made. Contributions for one million dollars or less can be requested at any time prior to 10 a.m. on the day of contribution. For all other contributions over one million dollars that are requested prior to 10 a.m., a pool participant may receive same day credit at the sole discretion of the State Treasurer. Contributions that receive same day credit will count, for earnings rate purposes, as of the day in which the contribution was made. Contributions for which no notice is received prior to 10:00 a.m. will be credited as of the following business day. Notice of contributions may be given by calling the Local Government investment Pool (800- 331 -3284) OR by logging on to State Treasurer's Treasury Management System ( "TMS "). Please refer to the LGIP -MMF Operations Manual for specific instructions regarding contributions to the LGIP -MMF. Direct deposits from the State of Washington will be credited on the same business day. Pricing. Contribution requests received in good order will receive the NAV per unit of the LGIP -MMF next determined after the order is accepted by the State Treasurer on that contribution date. Withdrawals Pool participants may withdraw funds from the LGIP -MMF on any business day. Each pool participant shall file with the State Treasurer a letter designating the financial institution at which funds withdrawn from the LGIP -MMF shall be deposited (the "Letter"). This Letter shall contain the name of the financial institution, the location of the financial institution, the account name, and the account number to which funds will be deposited. This Letter shall be signed by local officials authorized to receive and disburse funds, as described in WAC 210 -10 -020. 7 Disbursements from the LGIP -MMF will be effected by electronic funds transfer. Failure by the State Treasurer to wire funds to a pool participant after proper notification to the State Treasurer to disburse funds to a pool participant may result in a bank overdraft in the pool participant's bank account. The State Treasurer will reimburse a pool participant for such bank overdraft penalties charged to the pool participant's bank account. Notice. In order to withdraw funds from the LGIP -MMF, a pool participant must notify the State Treasurer of any withdrawal over one million dollars no later than 9 a.m. on the same day the withdrawal is made. Withdrawals for one million dollars or less can be requested at any time prior to 10 a.m. on the day of withdrawal. For all other withdrawals from the LGIP -MMF over one million dollars that are requested prior to 10 a.m., a pool participant may receive such withdrawal on the same day it is requested at the sole discretion of the State Treasurer. No earnings will be credited on the date of withdrawal for the amounts withdrawn. Notice of withdrawals may be given by calling the Local Government Investment Pool (800- 331 -3284) OR by logging on to TMS. Please refer to the LGIP -MMF Operations Manual for specific instructions regarding withdrawals from the Fund. Pricing. Withdrawal requests with respect to the LGIP -MMF received in good order will receive the NAV per unit of the LGIP -MMF next determined after the order is accepted by the State Treasurer on that withdrawal date. Suspension of Withdrawals. If the State Treasurer has determined that the deviation between the Fund's amortized cost price per share and the current net asset value per share calculated using available market quotations (or an appropriate substitute that reflects current market conditions) may result in material dilution or other unfair results, the State Treasurer may, if it has determined irrevocably to liquidate the Fund, suspend withdrawals and payments of withdrawal proceeds in order to facilitate the permanent termination of the Fund in an orderly manner. The State Treasurer will distribute proceeds in liquidation as soon as practicable, subject to the possibility that certain assets may be illiquid, and subject to subsequent distribution, and the possibility that the State Treasurer may need to hold back a reserve to pay expenses. The State Treasurer also may suspend redemptions if the New York Stock Exchange suspends trading or closes, if US bond markets are closed, or if the Securities and Exchange Commission declares an emergency. If any of these events were to occur, it would likely result in a delay in the pool participants' redemption proceeds. The State Treasurer will notify pool participants within five business days of making a determination to suspend withdrawals and /or irrevocably liquidate the fund and the reason for such action. Earnings and Distribution LGIP -MMF Daily Factor The LGIP -MMF daily factor is a net earnings figure that is calculated daily using the investment income earned (excluding realized gains or losses) each day, assuming daily amortization and /or accretion of income of all fixed income securities held by the Fund, less the administrative fee. The daily factor is reported on an annualized 7 -day basis, using the daily factors from the previous 7 calendar days. The reporting of a 7 -day annualized yield based solely on investment income which excludes realized gains or losses is an industry standard practice that allows for the fair comparison of funds that seek to maintain a constant NAV of $1.00. LGIP -MMF Actual Yield Factor The LGIP -MMF actual yield factor is a net daily earnings figure that is calculated using the total net earnings including realized gains and losses occurring each day, less the administrative fee. Dividends The LGIP -MMF's dividends include any net realized capital gains or losses, as well as any other capital changes other than investment income, and are declared daily and distributed monthly. Distribution The total net earnings of the LGIP -MMF will be declared daily and paid monthly to each pool participant's account in which the income was earned on a per -share basis. These funds will remain in the pool and earn additional interest unless withdrawn and sent to the pool participant's designated bank account as specified on the Authorization Form. Interest earned will be distributed monthly on the first business day of the following month. Monthly Statements and Reporting On the first business day of every calendar month, each pool participant will be sent a monthly statement which includes the pool participant's beginning balance, contributions, withdrawals, transfers, administrative charges, earnings rate, earnings, and ending balance for the preceding calendar month. Also included with the statement will be the monthly enclosure. This report will contain information regarding the maturity structure of the portfolio and balances broken down by security type. IIi. Management The State Treasurer is the manager of the LGIP -MMF and has overall responsibility for the general management and administration of the Fund. The State Treasurer has the authority to offer additional sub -pools within the LGIP at such times as the State Treasurer deems appropriate in its sole discretion. Administrator and Transfer Agent. The State Treasurer will serve as the administrator and transfer agent for the Fund. Custodian. A custodian for the Fund will be appointed in accordance with the terms of the LGIP Investment Policy. IV. Miscellaneous Limitation of Liability All persons extending credit to, contracting with or having any claim against the Fund offered in this Prospectus shall look only to the assets of the Fund that such person extended credit to, contracted with or has a claim against, and none of (i) the State Treasurer, (ii) any subsequent sub -pool, (iii) any pool participant, fiv) the LGIP, or (v the State Treasurer's officers, employees or agents (whether past, present or future), shall be liable therefor. The determination of the State Treasurer that assets, debts, liabilities, obligations, or expenses are allocable to the Fund shall be binding on all pool participants and on any person extending credit to or contracting with or having any claim against the LGIP or the Fund offered in this Prospectus. There is a remote risk that a court may not enforce these limitation of liability provisions. 4 Amendments This Prospectus and the attached Investment Policy may be amended from time to time. Pool participants shall receive notice of changes to the Prospectus and the Investment Policy. The amended and restated documents will be posted on the State Treasurer website: www.tre.wa.gov. Should the State Treasurer deem appropriate to offer additional sub -pools within the LGIP, said sub -pools will be offered by means of an amendment to this prospectus. LGIP -MMF Contact Information Internet: www,tre.wa.gov Treasury Management System /TMS Phone: 1 -800- 331 -3284 (within Washington State) Mail: Office of the State Treasurer Local Government. Investment Pool PO Box 40200 Olympia, Washington 98504 FAX: 360-902-9044 10 LOCAL GOVERNMENT INVESTMENT POOL TRANSACTION AUTHORIZATION FORM Please fill out this form completely, including any existing information, as this form will re lace the previous form. Name of Entity: City of Pasco Mailing Address: PO Box 293 Pasco WA 99301 Fax Number: 509 - 544 -3082 E -mail Contact: masond @pasco- wa.gov Do you wish to have your monthly LGIP statements faxed to the number listed above? Please note — if you choose to receive statements via fax, you will not receive another copy via U.S. mail. ❑— YES, please fax statements I � No, please send statements via U.S. mail Bank account where funds will be wired when a withdrawal is requested. (Note: Funds Will not be transferred to any account other than that listed). Bank Name: US Bank Branch Location: Pasco Bank Routing Number: 125000105 Account Number: 153501454992 Account Name: General - TDs Persons authorized to make deposits and withdrawals for the entity listed above. Name Title Signature Telephone Number Dunyele Mason, Finance Manager r -- 509- 544 -3065 Stan Strebel Deputy City Manager E -mail Address) 509 - 543 -5760 Richard Terway ACS Director 509 -543 -5775 By sieftature below, I certify I am authorized to represent the institution/agency for the purpose of this transaction. Any changes to these instructions must be submitted in writing to the Office of the State Treasurer. Please mail this form to the address listed below: OFFICE OF THE STATE TREASURER Date Received: 1 I LOCAL GOVERNMENT INVESTMENT POOL Fund Number, PO Box 40200 OLYMPIA, WA 985040200 (far LGIP use only) FAX: (360) 902 -9044 State of Washington ) County of ss. Signed or attested before me by Dated this _ day of , 20_ Signature of Notary SEAL OR STAMP Typed or printed name of Nolary Notary Public in and for the State of Wash. My appointment expires: Finance Manager 6116114 Authorized S[ nature (Title) (Date) Dunyele Mason masond @pasco - wa.gov 509- 544 -3065 (Print Authorized Signature) E -mail Address) (Telephone number) Any changes to these instructions must be submitted in writing to the Office of the State Treasurer. Please mail this form to the address listed below: OFFICE OF THE STATE TREASURER Date Received: 1 I LOCAL GOVERNMENT INVESTMENT POOL Fund Number, PO Box 40200 OLYMPIA, WA 985040200 (far LGIP use only) FAX: (360) 902 -9044 State of Washington ) County of ss. Signed or attested before me by Dated this _ day of , 20_ Signature of Notary SEAL OR STAMP Typed or printed name of Nolary Notary Public in and for the State of Wash. My appointment expires: FOR: City TO: Gary FROM: Ahm AGENDA REPORT NO. 18 June 5, 2014 Manager lie Works Director 4 Workshop Mtg.: 06/09/2014 Regular Mtg.: 06/16/2014 SUBJECT: Irrigation System Master Plan I. REFERENCE(S): 1. Irrigation System Master Plan -- Proposed Resolution 2. Irrigation System Master Plan — Proposed Capital Improvements List 3. Irrigation System Master Plan — Plan IL ACTION REQUESTED OF COUNCIL / STAFF RECOMMENDATIONS: 06109: Discussion: 06/16: MOTION: I move to approve Resolution No. adopting the Irrigation System Master Plan. III. FISCAL IMPACT: IV. HISTORY AND FACTS BRIEF: A) On May 20, 2013, City Council approved a professional services agreement with MSA to complete a study of the City's water rights and a way to manage the available rights. The City owns and operates two water systems; one for domestic use and one for irrigation use. These systems are supplied by surface and ground water and include a surface water intake from the Columbia River, a system of 10 wells, with associated pumping and treatment equipment. B) The irrigation system has grown to include ten well sites, one river pump station, and a three million gallon standpipe, and now serves over 6,000 residential customers. In addition to the residential water users, the system also supplies irrigation for a soccer complex, five residential parks, two schools, and numerous landscaping areas maintained by the City. Service is provided from April through October. V. DISCUSSION: A) MSA has completed the Irrigation System Master Plan, including capital improvements for the irrigation system for the near and long term. B) Staff recommends Council's approval of the Irrigation System Master Plan by Resolution. 8(d) RESOLUTION NO. A RESOLUTION accepting the Irrigation System Master Plan prepared by MSA Associates. WHEREAS, the city presently provides irrigation water to more than 6,000 citizens and the city's population is expected to continue to grow; and WHEREAS, the city relies on approximately 932 acre feet of water from the Columbia River and 11 well sites for its irrigation water supply; and WHEREAS, withdrawals from the Columbia River are strictly regulated by the state in its effort to balance the needs of various user interests and it is, therefore, expected that additional withdrawals from the Columbia River will become increasingly difficult; and WHEREAS, the city acquired and has greatly expanded an irrigation system serving much of the Pasco plateau, thus partially mitigating the consumption of domestic raw water supply associated with urban growth on the plateau; and WHEREAS, the city recognizes the increasing need to preserve and conserve its irrigation supply as well as optimize the use and benefit of the wells it owns and operates; and WHEREAS, the city's consultant, MSA Associates, has studied the city's domestic and irrigation system supplies and has developed a management plan designed to optimize long -term use of the city's limited water supplies; NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF PASCO, WASHINGTON, DO RESOLVE AS FOLLOWS: Section 1. That the City Council hereby accepts the Irrigation System Master Plan prepared by MSA Associates, attached hereto as Exhibit A, to be used as a guide by staff and Council in making various decisions about the city's irrigation system. PASSED by the City Council of the City of Pasco at its regular meeting this day of , 2014. Matt Watkins, Mayor ATTEST: APPROVED AS TO FORM: Debra Clark, City Clerk Leland B. Kerr, City Attorney i e i 5� �uN A A A 5: Q A A a� F A 's a 4 A u A �S A A Zg R d' p A ci 4 R 9{ 8 i g $ A g — Ll 3 � Q s f A f a" I i a s 4 a a re„ 0 C E a It gy K m r'dWl � .�mal�CS n°II�m44�N1 �� .4aamalay aaanoG ••. �..og aarynl6 Aoa>•'nlangd �. s ;k $ — n W — 1z 9oamaxatlml malty ogIn91Aa1Q 4� nSmla uw6 poa aama5 E �+IPNS wa Y°I °Kqd I„ i e i 5� �uN A 5: Q a 4 A u A �S A A A 9{ i $ g Ll A a" I i a s 4 a re„ 0 C E a m r'dWl � .�mal�CS n°II�m44�N1 �� .4aamalay aaanoG ••. �..og aarynl6 Aoa>•'nlangd �. CITY OF PASCO, WASHINGTON IRRIGATION SYSTEM MASTER PLAN December 2013 MSA Water Solutions, Inc. IRRIGATaON SYSTEM MASTER PLAN M Y HE CITY OF ]PASCO, WASHINGTON DECEMBER 2013 MURRAY, S1%41'T11 & ASSOCIATES, INC. 1145 Broadway Plaza, Suite 1010 Tacoma, Washington 98402 -3542 253.627.1520 in association with GS1 WATER SOLUTIONS, INC. 55 Southwest Yamhill Street, Smite 300 Portland, Oregon 97205 971.239.$799 13- 1444.407 ACKNOWLEDGEMENTS The following City of Pasco staff contributed to the development of this Irrigation System Master Plan: Ahmad Qayoumi, Public Works Director Teresa Reed - Jennings, Senior Utilities Engineer Cameron Magelsen, Irrigation System Manager Curtis Glines, Irrigation System Operations Reuel Klempel, Wastewater Treatment Plant Manager Doyle Heath, Engineering Technician The following GSI Water Solutions, Inc. staff contributed to the development of this Irrigation System Master Plan: Phillip A. Brown, RG LHg Kenny Janssen, RG 13- 1444.407 i Irrigation System Master Plan December 2013 Acknowledgements City of Pasco k:ltae _projects \1511444 - paw wafer re umA sludyAV plan preparationli igation sysletn manta plsnlaanowledgements page NaLdocx TABLE OF CONTENTS EXECUTIVE SUMMARY Authorization................................................................................ ...........................ES -1 Background................................................................................... ...........................ES -1 Purpose.......................................................................................... ...........................ES -1 Irrigation System Plan Overview .................................................. ...........................ES -1 Existing System ....................... ..ES -2 Supply. ................................ .......................................................................... ES -2 Groundwater Supplies ......................................... .............................. ES -2 Surface Water Supplies ....................................... .............................. ES -4 Water Rights Summary ....................................................... .............. ES -5 Storage............................................................................... ...........................ES -6 Pressure Zones ................................................................... ...........................ES -6 Booster Pump Stations ....................................................... ...........................ES -6 DrySystems ................. ................................................................................. ES -6 Irrigation Water Demands ............................................................. ...........................ES -7 Irrigation System Analysis and Findings .......................................................... ....... ES -7 HydraulicModel........ ........................................................ ...........................ES -7 AnalysisCriteria ............................................. .............................................. ES -8 FlowVelocities ................................ ................................................. ES -8 Irrigation System Pressures .................................... ...........................ES -8 Model Analysis and Findings ............................................ ...........................ES -8 Existing Conditions ............................... ............................................ ES -8 Future Conditions ................................................... ...........................ES -9 StorageAnalysis ............................................................... ..........................ES -12 Well Condition Assessment ............................................................ .......................ES -12 Recommendations........................................................................ ..........................ES -12 1. INTRODUCTION Authorization.............................................................................. ............................... 1 -1 Background................................................................................. ............................... 1 -1 Purposeand Scope ...................................................................... ............................... 1 -1 Irrigation System Plan Overview ................................................ ............................... 1 -1 2. EXISTING SYSTEM Introduction................................................................................. ............................... 2 -1 Existing Irrigation System .......................... Supply....... ....................................................................... ............................... 2 -4 Groundwater Supplies .......................................... ............................... 2 -4 13- 1444.407 ii Irrigation System Master Plan December 2013 Table of Contents City of Pasco katac_pmjem \1311444 - pasty wat,T resources nudy1407 plan pmeparationli gat ion system master platt\table of contccts.doca Surface Water Supplies ........................................ ............................... 2 -4 WaterRights Summary ........................................ ............................... 2 -4 Storage............................................................................. ............................... 2 -4 Distribution...................................................................... ............................... 2 -7 PressureZones.. . ................................................................................. 2 -7 Booster Pump Stations ......................................... ............................... 2 -7 DrySystems ......................................................... ............................... 2 -8 Interties to Other Systems .................................... ............................... 2 -8 Irrigation System Demands ......................................................... ............................... 2 -8 ProductionRecords .......................................................... ............................... 2 -8 OverallSystem Usage ...................................................... ............................... 2 -8 Residential Demands ..................................................... ............................... 2 -10 Commercial Demands ................................................... ............................... 2 -10 Agricultural Demands .................................................... ............................... 2 -11 General Operating Procedures .................................................. ............................... 2 -11 WaterQuality ............................................................................ ............................... 2 -12 Agreements with Kidwell Farms, Inc ....................................... ............................... 2 -12 RateSchedule ............................................................................ ............................... 2 -12 Summary................................................................................... ............................... 2 -12 3. CRITERIA, ANALYSIS, AND FINDINGS Introduction................................................................................. ............................... 3 -1 Irrigation System Analysis .......................................................... ............................... 3 -1 ModelLayout ................................................................... ............................... 3 -1 PipeCharacteristics ......................................................... ............................... 3 -1 Water Demand Distribution ............................................. ............................... 3 -2 Wells................................................................................ ............................... 3 -2 ModelCalibration ............................................................ ............................... 3 -2 AnalysisCriteria .............................................................. ............................... 3 -3 FlowVelocities ......... ........................................... ............................... 3 -3 Irrigation System Pressures .................................... I............................ 3 -3 SystemStorage........ ............................................. ............................... 3 -4 Model and Analysis Findings .......................................... ............................... 3 -4 Existing Conditions .............................................. ............................... 3 -4 Future Conditions ................................................. ............................... 3 -5 Storage.................................................................. ............................... 3 -5 Operations and Maintenance Problems ........................... ............................... 3 -8 Northwest Commons Well Use ............................ ............................... 3 -8 FreshwaterMussels .............................................. ............................... 3 -8 Access to Pipes in Island Estates and Sunny Meadows ...................... 3 -8 Interstate Highway 182 Crossing ......................... ............................... 3 -8 Telemetry System and Communications ......................... ............................... 3 -9 WellCondition Assessment ........................................................ ............................... 3 -9 13- 1444.407 iii Irrigation System Master Plan December 2013 Table of Contents City of Pasco k:ltac_pmjeots113 \1444 • pasco water resources study \407 plan preparation \irrigation system master plan \table of conwnls.docx Data Review and Gap Analysis..,. .... I ..................................... ..... 3 -9 ................... Observations and Analysis ............................................ ............................... 3 -10 Summary................................................................................... ............................... 3-10 4. RECOMMENDATIONS Introduction................................................................................. ............................... 4 -1 Improvements Completed Since 2005 .................. .............. 4 -1 Distribution System Improvements...... ...................................................................... 4 -2 Irrigation Main Improvements ............................ ............................... ......... 4 -2 Interstate Highway 182 Crossing Isolation Valve Improvements .................. 4 -2 Island Estates and Sunny Meadows Distribution Isolation Valve Improvements.................................................................. ............................... 4 -3 Northwest Commons Well and Pivot .............................. ............................... 4 -3 TelemetryImprovements ............................................................ ............................... 4 -3 Source and Storage Improvements .............................................. ............................... 4 -3 Storage............................................................................. ........................ ....... 4 -4 Irrigation Well Improvements ......................................... ............................... 4 -4 Well Assessment and Rehabilitation Plan ............ ............................... 4 -4 Well Data Acquisition .......................................... ............................... 4 -5 Village of Pasco Heights Well Replacement ....... ............................... 4 -6 Construction of New Irrigation Wells .................. ............................... 4 -7 WellHouses ......................................................... ............................... 4 -7 Well Performance Monitoring Program ..... ............................... DrySystems .............................................................................. ............................... 4 -8 Recommendations for Further Study and Planning .................... ............................... 4 -8 WellField Study .............................................................. ............................... 4 -8 FreshwaterMussels ......................................................... ............................... 4 -8 Rate Structure Study ...................... ............................... . .. ............................... 4 -8 Irrigation System Master Plan Update .... ............................... Project Cost Estimates ................................................................. ............................... 4 -9 Summary..................................................................................... ............................... 4 -9 APPENDICES Appendix A: Water Quality Data Appendix B: 2007 Residential Water Use Study Memorandum Appendix C: Operating Agreements Appendix D: Project Cost Estimates 13- 1444.407 iv Irrigation System Master Plan December 2013 Table of Contents City of Pasco k:ltae _projeciA013%1444 - pwsco water resa=es slud)M07 plan preparationlirrigation system master planitable of eonlems.docx LIST OF FIGURES Figure ES -1: Existing Irrigation System ....................... Figure ES -2: Total System Production ........................................ ...........................ES -7 Figure ES -3: Hydraulic Modeling Results for Existing Conditions ..................... ES -10 Figure ES -4: Hydraulic Modeling Results for Future Conditions ........................ ES -11 Figure 2 -1: Existing Irrigation System .................................... ............................... 2 -2 Figure 2 -2: Existing Irrigation System Hydraulic Profile ....... ............................... 2 -3 Figure 2 -3: Total System Production ...................................... ............................... 2 -9 Figure 3 -1: Hydraulic Modeling Results for Existing Conditions ......................... 3 -6 Figure 3 -2: Hydraulic Modeling Results for Future Conditions ............................ 3 -7 Figure 4 -1: Proposed Irrigation System Improvements ........ ............................... 4 -14 LIST OF TABLES Table ES -1: Irrigation Main Inventory by Size .......................... ...........................ES -2 Table ES -2: Irrigation Well Summary ....................................... ...........................ES -4 Table ES -3: Irrigation Water Rights Summary .......................................... ........... ES -5 Table ES -4: Dry System Summary ............................................ ...........................ES -6 Table ES -5: Recommended Capital Improvement Budget Summary ................ES -13 Table ES -6: Near -Term Capital Improvement Program Summary ....................ES -14 Table ES -7: Long -Term Capital Improvement Program Summary .................... ES -16 Table 2 -1: Irrigation Main Inventory by Size ........................ ............................... 2 -1 Table 2 -2: Irrigation Well Summary ..................................... ............................... 2 -5 Table 2 -3: Irrigation Water Rights Summary ....................................................... 2 -6 Table 2 -4: Pressure Zone Summary ...................................... ............................... 2 -7 Table 2 -5: Dry System Summary .. ....... ........................ .. ............................... ....... 2 -8 Table 2 -6. Peaking Factor Summary ..................................... ............................... 2 -9 Table 2 -7: Irrigation System Connections Summary .......... ............................... 2 -10 Table 2 -8: Summary of Agricultural Demands ................... ............................... 2 -11 Table 2 -9: Irrigation Utility Fees and Rates Summary ........ ............................... 2 -13 Table 3 -1: Hydraulic Modeling Calibration Summary .......... ............................... 3 -3 Table 3 -2: Irrigation Well Data Summary and Gap Analysis ............................ 3 -11 Table 3 -3: Irrigation Well Ranking Summary ..................... ............................... 3 -12 Table 3 -4: Well Condition Assessment Summary ............... ............................... 3 -12 Table 4 -1: Irrigation System Improvements Completed Since 2005 ................... 4 -1 Table 4 -2: Recommended Well Rehabilitation and Performance Testing Activity Summary ................................... ............................... 4 -6 Table 4 -3: Irrigation Well Data Acquisition Recommendations Summary ......... 4 -6 Table 4 -4: Near -Term Capital Improvement Program Summary ...................... 4 -10 Table 4 -5: Long -Term Capital Improvement Program Summary ...................... 4 -12 Table D -1: Irrigation Main Project Cost Summary ............... ............................... D -1 Table D -2: Well Rehabilitation and Assessment Project Cost Summary ............ D -2 Table D -3: Village of Pasco Heights Well Replacement 13- 1444.407 v Irrigation System Master Plan December 2013 Table of Contents City of Pasco kAtacpt jwLNJM444 -pasco wwerresources stud y\407 plan preparalionlirrigation syslcm muter planHahleofwntetits. docx Project Cost Summary ... ............................... Table D -4: New Irrigation Well Project Cost Summary 13-1444.407 vi December 2013 Table of Contents k:Vacyrojectsll 311444 - pasco water resowces studyl407 plan prepara6o6nipation system masmr plw%table of wnients, docx ... ............................... D -4 ... ............................... D -5 Irrigation System Master Plan City of Pasco EXECUTIVE SUMMARY V EXECUTIVE SUMMARY Authorization On June 4, 2013, Murray, Smith & Associates, Inc. (MSA) was authorized by the City of Pasco (City) to prepare this plan. Background The City of Pasco owns and operates an irrigation water utility that provides water to residential customers and a limited number of commercial customers. Providing a system for irrigation water separate from the potable water utility allows the City's customers to avoid using treated drinking water to irrigate. The City's existing irrigation system is supplied by water from 11 groundwater wells and water pumped from the Columbia River. The City acquired the first portions of the system in 2002 from a private irrigation utility. The system has grown considerably since that time. The City uses the irrigation system annually from April 1St to October 31". The City has established the goal of developing a capital improvements plan for the irrigation system to ensure the continued delivery of economical irrigation water to City residents. Purpose The purpose of this plan is to provide a basis for identifying, analyzing, and planning capital improvements to the irrigation system. The study includes a hydraulic analysis of the existing system which compares the existing system's performance to analysis criteria in order to identify deficiencies and develop system improvements. A capital improvements plan is developed to assist in planning future projects. Included with this plan are conceptual level project cost estimates. The system's existing groundwater wells will also be evaluated through a tabletop review of existing data. The results of this review will be used to develop preliminary recommendations for improvements, further assessment, and rehabilitation work. Irrigation System Plan Overview This plan is organized by sections. Section 2 presents an inventory of the irrigation system and its components as they currently exist and operate. The City's irrigation water rights are also discussed in Section 2. Section 3 presents analysis criteria that form the basis for identifying deficiencies in system performance and planning improvements to the irrigation system. Section 3 also includes a description of the hydraulic model and the results of the modeling analysis work. Groundwater well condition assessments are also documented in this section. Section 4 presents recommendations for improvements to the system and to the groundwater wells, as well as recommended further study and planning work. 13- 1444.407 Page E5 -1 Irrigation System Master Plan December 2013 Executive Summary City of Pasco KATAC— Projects \13 \1444 - Pasco Water Resources Study1407 Plan Prepanuinnlln igation System Master Plan \Section 0 - Executive Summary.docx Existing System The City's irrigation system piping is polyvinyl chloride (PVC), ductile iron (DI), and steel distribution pipes ranging from 3 inches to 24 inches in diameter. Table ES -1 shows a summary of irrigation main sizes in the distribution system. Figure ES -1 shows an overview of the irrigation system. Table ES -1 Irrigation Main Inventory by Size Diameter (inches) Length (ft) Length (miles) < 6 356,347 67.49 6 125,506 23.77 8 80,678 15.28 10 51122 0.97 12 96,254 18.23 15 8,078 1.53 16 27,878 5.28 18 4,488 0.85 24 4$3 0.09 Total 711 797 134.81 The oldest parts of the system are approximately 15 to 20 years old, with most of the system constructed less than 10 years ago. Parts of the irrigation system were first acquired by the City in 2002 from Kidwell Farms, Inc., a private irrigation utility owner. This utility was part of subdivisions built by private developers. Supply The City's irrigation system is supplied by groundwater produced from 11 wells located throughout the system and surface water pumped from the Columbia River. All sources of supply pump to the system's main service zone, referred to as the 639 pressure zone. Supply to lower zones is accomplished through the use of pressure- reducing stations. Groundwater Supplies The City's irrigation wells range between 135 and 245 feet deep and are completed in an unconfined alluvial aquifer consisting mainly of sand and gravel. The wells range between 1 and 39 years old. Roughly half of the wells are constructed with perforated casing and the others with stainless steel, wire wrap well screen. The reported production capacities range between 450 and 2,500 gpm. Table ES -2 summarizes the City's irrigation wells. 13- 1444.407 Page ES -2 Irrigation System Master Plan December 2013 Executive Summary City of Pasco V_UACPro}ccts\13\1444 - Paso Water Resource Snudy1407 Plan Preps tionUrfigation System Master P1anlS= ion O - Executive Svmmary.doc> iI "I ES-1 E IIISTING CITY IRRIGATION F-1 MSA IIII, 4.'1 WELL x "7" jr 77:7 iI �v U�E 1� HTAU xANq EsCinh 1. bxo qv PC E",S WzO.E LIEU LOVIREA ciTy or PAsco F. RE- -1 uu -7 ­IP I ELL nEE7 7 PLACE I'm - '117. :L,4 rr, T7 "I ES-1 E IIISTING CITY IRRIGATION SYSTEM MSA IIII, 4.'1 WELL x "7" �v U�E 1� HTAU xANq EsCinh 1. bxo qv PC E",S WzO.E LIEU LOVIREA ciTy or PAsco F. RE- -1 uu -7 ­IP I ELL nEE7 7 PLACE I'm - '117. :L,4 rr, T7 Table ES -2 Irrigation Well Summary Notes 1. Below ground surface 2. Gallons per minute 3. Horsepower Surface Water Supplies In addition to groundwater wells, the City uses water pumped from the Columbia River for irrigation supply. The river intake pump station conveys water directly to the Road 108 Booster Pump Station located on the west side of the system. The Road 108 Booster Pump Station pumps the irrigation water to the irrigation distribution system. Irrigation water pumped from the river is metered through a master meter at the Road 108 Booster Pump Station. 13- 1444.407 Page ES -4 Irrigation System Master Plan December 2013 Executive Summary City of Pasco K:%TAC_P1ujecrs113%J AAA - Pasco Water Resources Study1467 Plan Prcparationllrriga[ion System Master P1an\Swion 0 - E=u[iv Sumnwy.docx Year Depth Fixed/ Average Motor Size Well Name Constructed (BGS) Pump Type Variable Production (Hp) S eed Rate m } Desert 1951 152 Submersible Fixed 650 75 Estates Desert 1929 202 Vertical Variable 1,450 150 Sunset Turbine First Place 2007 123 Vertical Variable 2,500 350 Turbine Island 1976 190 Submersible Fixed 450 50 Estates Vertical I -182 Unknown 134 Variable 1,850 200 Turbine Linda Vertical Loviisa 2012 205 Turbine Fixed 1,100 150 Northwest Vertical Unknown 203 Variable 1,300 150 Commons Turbine Powerline 1980 171 Vertical Fixed 1,900 200 Road Turbine Road 52 2006 185 Vertical Variable 2,350 250 Turbine Sirroco 1976 222 Vertical Variable 1,400 150 Turbine Village of Pasco 1975 184 Submersible Fixed 1,000 125 Heights Notes 1. Below ground surface 2. Gallons per minute 3. Horsepower Surface Water Supplies In addition to groundwater wells, the City uses water pumped from the Columbia River for irrigation supply. The river intake pump station conveys water directly to the Road 108 Booster Pump Station located on the west side of the system. The Road 108 Booster Pump Station pumps the irrigation water to the irrigation distribution system. Irrigation water pumped from the river is metered through a master meter at the Road 108 Booster Pump Station. 13- 1444.407 Page ES -4 Irrigation System Master Plan December 2013 Executive Summary City of Pasco K:%TAC_P1ujecrs113%J AAA - Pasco Water Resources Study1467 Plan Prcparationllrriga[ion System Master P1an\Swion 0 - E=u[iv Sumnwy.docx Water Rights Summary The City's current irrigation water rights are a combination of water rights issued by the Washington State Department of Ecology (DOE) and water rights which were given to the City by private parties. The City's annual irrigation water rights total 7,592.9 acre -ft. Table ES -3 shows a summary of the City's existing irrigation water rights. Table ES -3 Irrigation Water Rights Summary Well Name Water Right 3 Q,4 -ft Q 4 acre Approximate Pumping Ca aci m First Place G3- 01243C 1,400 558.0 2,500 Desert Sunset G3- 20243P(B) 214 107.9 1,450 G3- 20243P(C ) 1,174 441.6 Island Estates G3-20242C(B) 1,134 504.0 450 Sirocco G3- 20243P(B) 214 107.9 1,450 G3- 28452C 450 172.0 Road 52 G3- 20242P(A) 1,430 636.0 2,350 Village of Pasco Heights G3- 23525C 1,300 660.0 1,000 Northwest Commons G3- 20243P(A) 1,612 483.6 1,300 G3- 20243P(B) 214 107.9 Desert Estates G3 -24981 C (A) 80 41.9 750 G3- 24981C(B) 400 155.9 Linda Loviisa G3-20244C4 1,880 759.8 1,000 G3- 24978C 1,600 660.0 G3- 26368C 400 164.0 I -182 1,600 660.0 1, 850 400 164.0 Powerline Road EG3-24978C B 270 108.1 1,900 C 573.75 203.4 G3- 27413P(D) 281.25 112.6 G3- 27413P(F) 270 108.0 Road 108 Booster Pump Station G3-27413P (C)"" 573.75 203.4 3,000 53- 28615C 19643 732.0 53- 28788C 139 56.0 53- 28789C 121 48.0 53- 28790C 195 200.0 53- 28932C 597 240.0 Total Rights 171164 79152.8 19,000 Notes I . Indicates that water right is shared 2. This water right has two points of withdrawal 3. G indicates a groundwater right; S indicates a surface water right. 4. Q; is the instantaneous allowable flow; Qu is the average annual allowable volume 13- 1444.407 Page ES -5 Irrigation System Master Plan December 2013 Executive Summary City of Pasco K;\TAC_PmjectsMN1444 - I'- Water Resources SmdyA07 Plan PreparationUnigation System Master P1an15enrion 0 - Executive Sm-na y.docx Storage The irrigation system has one storage tank located near the intersection of Sandifur Parkway and Road 76. The storage tank sets the hydraulic grade for most of the City's system. The storage tank serves the 639 pressure zone by gravity, so the water is able to serve the other pressure zones at lower elevations through pressure- reducing stations. The City currently operates the tank below full at a volume of 2.28 million gallons (MG). Pressure Zones The irrigation system has six pressure zones. The zones are separated by pressure - reducing stations which allow zones with a higher hydraulic grade to supply zones having a lower hydraulic grade with water. Booster Pump Stations The City currently has one booster pump station in its irrigation system. This is the Road 108 Booster Pump Station located at the intersection of Road 108 and Crescent Road in the western portion of the irrigation service area. The design capacity of this station is 3,000 gpm. This station is used to boost water pumped from the Columbia River Intake Station to the 639 Pressure Zone. Another pump station is planned for construction in 2013. This station will be called the Harris Road Booster Pump Station and will be located on Harris Road near Interstate 182. This booster pump station has a design capacity of 3,125 gpm. The station will also pump water supplied by the Columbia River Intake Station to the distribution system. Dry Systems The City's irrigation system includes portions that are installed and ready for use, but not currently used. These systems are referred to as dry systems. The existing dry systems are shown in Figure ES -1. Table ES -4 shows a summary of the current dry systems. Table ES -4 Dry System Summary Subdivision Name Number of New Connections Estimated Acreage (ac) Broadmoor Estates 304 90.67 Broadmoor Place 233 62.33 Desert Oasis 170 54.17 Desert Plateau 304 108.48 Total 1,011 315.65 13- 1444.407 Page ES -6 Irrigation System Master Plan December 2013 Executive Summary City of Pasco KATAC_Projects\1357444 - Pasco Water Resources Study1407 Plan Preparationlln igation S}stem M Grier PlanlSection 0 - k.xeculive Sunur>arp.docx Irrigation Water Demands The City typically uses its irrigation system from April to October every year. Production is monitored and recorded by meters on each of the system's wells. Some large users are metered, but most connections to the system are not currently metered. Total system production is the sum of water produced by the irrigation system wells and water pumped from the Columbia River. Figure ES -2 shows total system production from 2006 to 2012. As seen from the figure, system production has increased steadily from 2006 to 2012. 7,000 6,000 as V 5,000 a O 0 4,000 .a 0 3,000 a� y 2,000 1,000 0 Figure ES -2 Total System Production 2006 2007 2008 2009 2010 2011 2012 Year Irrigation System Analysis and Findings The analysis of the irrigation system uses a hydraulic model to simulate pressure and flow conditions in the system under several demand conditions. The results are compared to analysis criteria and form the basis for identifying deficiencies. Hydraulic Model The initial layout of the hydraulic model was completed by tracing pipes and junctions over the City's GIS data. Graphical and tabular data provided by the City were used to locate critical hydraulic elements such as the Road 68 Irrigation Tank, wells, pumps, and pressure - reducing stations. The demands presented in Section 2 were distributed throughout the 13- 1444.407 Page ES -7 Irrigation System Master Plan December 2013 Executive Summary City of Pasco KATAC_Projecls11351444 - Prier Water Resources S1udyAG7 Plan Prepwationgrrigation System Master P1aMSeaion 0 - Executive Summ y.docx 5,786 5,439 4 ,765 4,527 3,513 3,000 4,062 2006 2007 2008 2009 2010 2011 2012 Year Irrigation System Analysis and Findings The analysis of the irrigation system uses a hydraulic model to simulate pressure and flow conditions in the system under several demand conditions. The results are compared to analysis criteria and form the basis for identifying deficiencies. Hydraulic Model The initial layout of the hydraulic model was completed by tracing pipes and junctions over the City's GIS data. Graphical and tabular data provided by the City were used to locate critical hydraulic elements such as the Road 68 Irrigation Tank, wells, pumps, and pressure - reducing stations. The demands presented in Section 2 were distributed throughout the 13- 1444.407 Page ES -7 Irrigation System Master Plan December 2013 Executive Summary City of Pasco KATAC_Projecls11351444 - Prier Water Resources S1udyAG7 Plan Prepwationgrrigation System Master P1aMSeaion 0 - Executive Summ y.docx model using a nearest node method. The nearest node method assigns known demands with a known spatial distribution to the nearest node in the system. Model calibration was completed using data collected by the City's SCADA system. The system collects and logs information from the system every 30 to 60 minutes. Monitoring points on the system include well discharges, booster pump station discharges, and the storage tank. Analysis Criteria The analysis criteria used to evaluate the hydraulic performance of the irrigation system include minimum system pressures and maximum flow velocities. Any result not meeting these criteria is subject to further investigation and potential corrective action. Flow Velocities Pipes whose flow velocities exceed 5 feet per second (fps) under average day demand conditions are considered to have inadequate capacity. Pipe flow velocities are allowed to increase up to 8 fps during peak hour demand (PHD) conditions. Any pipes with flow velocities above 8 fps under PHD conditions are considered to have inadequate capacity. Irrigation System Pressures The City's pressure criteria at service connections are summarized below. These pressure criteria are based on industry standards, Uniform Plumbing Code requirements, and a review of landscape irrigation equipment water pressure requirements. 1. Each service connection should maintain a minimum water pressure of 30 pounds per square inch (psi) during all demand conditions. 2. No service connection should exceed a water pressure of 120 psi. Individual customers are responsible for reducing water pressures over 80 psi if they desire to do so. 3. During a failure of any part of the system, the maximum water pressure at customer meters will not exceed 150 psi. Model and Analysis Findings The calibrated model was used to simulate two scenarios: year 2012 conditions and an anticipated future demand condition. Modeling for the future condition included the City's existing dry systems, but did not include any new pipes or new developments. The results of each analysis are described below. Existing Conditions Existing conditions were modeled using 2012 PHD conditions. Two pipes in the system exceed the flow velocity criteria of 8 fps under PHD conditions. These pipes are 4 inches in diameter and located adjacent to the Sirocco Well discharge. All analysis criteria were 13- 1444.407 Page ES-8 Irrigation System Master Plan December 2013 Executive Summary City of Pasco KAAC_ProjectsVk 311444 - Fuca Water Resource_ Study4407 Plan PreparalionUrrigation System Master PlanlScetion 0 - Executive Summary.do" satisfied with regard to system pressures. The results are summarized below. A graphical summary of modeling results for the existing conditions scenario is shown in Figure ES -3. • The system does not experience pressures over 120 psi under any demand condition. In order to verify that maximum allowable pressures were not exceeded, a low - demand condition was used to approximate static conditions. • The system experiences pressures over 80 psi near discharges for wells and the Road 108 Booster Pump Station during high production. None of the locations which experience pressures between 80 and 120 psi serve customers. They are typically located on dedicated transmission mains and are caused by topography. • Low system pressures were not predicted by the model under this scenario during normal tank levels. if the storage tank water surface elevation reaches 600 feet above mean sea level (AMSL), the system begins to experience isolated low pressures. • No part of the system experiences pressures over 150 psi during a failure of pressure - reducing valves. It is possible that pumps could fail in such a manner as to cause high system pressures downstream of their discharges. Future Conditions The calibrated model was used to predict the hydraulic performance of the City's irrigation system under anticipated future conditions. The future condition assumptions are: • All of the City's current dry systems are connected and in use • All of the City's existing subdivisions are fully developed • All of the City's sources are producing the maximum allowed flows simultaneously These assumptions represent near -term conditions that could occur within the next two to five years. The actual timing of these conditions is dependent on a number of variables. Any changes in the following conditions would alter the analysis results: • Expansion of the irrigation system service area beyond assumed service limits • Additional sources of supply • Changes in water rights High system pressures were found near the discharges of wells and pump stations as in the 2012 PHD scenario. No pipes that serve customers directly experienced high pressures. No low system pressures were found by the model. High flow velocities were found by the model at two locations: Near the discharge of the Sirocco Well as observed in the 2012 PHD scenario North of the intersection of Road 52 and Sandifur Parkway A graphical summary of modeling results for the future conditions scenario is shown in Figure ES -4. 13- 1444.407 Page ES -9 Irrigation System Master Plan December 2013 Executive Summary City of Pasco KATAC_Pmjws1] 3M44 - Pasco Water Resources Study1407 Pian PrepwationU rigation System Malta PkanrSW60n 0 - FXe Live Summary.docx .n ...o.,w � ___ ` .�.... r.�l � . _. _ . .�' � � � i Figure ES -3 HYDRAULIC MODELING RESULTS FOR EXISTING 3 CONDITIONS E� -ja�" "JA WELL WMI1.114 -4c t A, 4i LZ CITY OF ,A$Co _WELL I pw r i LJ: I r 'T 7� '§ �kN� ' - - "- -- ' IL r , I COAyyhw R:.:�.._ � n f CAP 3 M, weu Q --7 , I COAyyhw R:.:�.._ � n f CAP 3 M, weu Q 74 HYDRAULIC MODELING RESULTS FOR FUTURE CONWIDINIS ..—, . J� M S - A A,- V. L: A..! CITY OF PABC 0 NIGH MLL - ------ PW V r V �7 T ui- 4 WES, P�SCD' weu A,- V. L: A..! CITY OF PABC 0 NIGH MLL - ------ PW V r V �7 T ui- 4 WES, P�SCD' Storage Analysis The system storage was evaluated at projected peak hour demand conditions to determine whether or not enough storage is available in the system. The analysis concluded that the existing irrigation system reservoir has adequate capacity to meet projected storage needs as long as the water level in the tank is raised. Modeling confirmed that raising the water level does not have any adverse impacts on the distribution system. Well Condition Assessment A tabletop condition assessment of the City's groundwater supply wells was completed as part of this plan. The assessment consisted of gathering and analyzing available information. The objective of this analysis is to identify wells having apparent construction, performance, or water quality issues that may be limiting production with the purpose of developing a targeted approach at candidate wells to regain performance and optimize individual and combined system production. The results of the well condition assessments are surrunarized as follows: • Review of available information for the Desert Sunset, Sirocco, NW Commons, Island Estates, 1 -182, and Powerline Road wells indicated the presence of biofouling and incrustation which are possibly plugging screens and perforations. Significant accumulations of sediment or debris in the wells are also noted. • Observations indicated minor mineral and biological deposits within the First Place and Desert Estates wells. • Based on the information provided and relatively newer construction, the apparent conditions of the Road 52 and Linda Loviisa Wells are considered good. Recommendations Recommendations for improvements to wells, improvements to the irrigation system, and opportunities for further planning and study were developed as part of this report. The recommendations are separated into near -term improvements and long -term improvements. Near -term improvements are those which should be completed within the next one to five years. Long -term improvements should be completed in six to twenty years. The recommended capital improvement program totals approximately $800,000 for near - term improvements. The sum of recommended budget for long -term improvements is $6.87 million and does not include the $800,000 of near -term recommended investment. Table ES- 5 shows a summary of the recommended capital improvement budgets. Tables ES -6 and ES- 7 include tabulated summaries of all recommended improvements and their associated estimated project costs. 13- 1444.407 Page ES -12 Irrigation System Master Plan December 2013 Executive Summary City of Pasco K:STAC_Projecls5i351444 • Pasco Water Kesowr Srudy1407 Plan Prepwr tionlLTigation System Master Plan\Section 0 • Executive Sumnary.doec Table ES -5 Recommended Capital Improvement Budget Summary Near -Term $800,000 Long -Term $6,867,000 Total $7,667,000 13- 1444.407 Page ES -13 I1Tigation System Master Plan December 2013 Executive Summary City of Pasco KATAC_Projects51351444 - Pasco Warcr Resource Study1407 Plan Preparalion5&rigatian System Masmr HaMSection 0 - Eucxivu Sum =y.docx Table ES -6 Near -Term Capital Improvement Program Summary Group ID Project location Project Limits Project Description Estimated or Name Project Cost Road 56 to Road Extend existing 16 -inch diameter main east to Road 52. The new 1R.2 Powerline Road 52 main may be built in right of way that is being platted as part of $186,000 the construction of a new elementary school at the intersection. West along Sahara Extend two 4 -inch diameter distribution mains on Sahara Drive Drive from end of west to the existing 12 -inch diameter main on Road 44. This IRA Sahara Drive improvement provides a redundant connection to the rest of the 546,000 w existing mains to system if the connection at Burden Boulevard is out of service for E Road 44 any reason, cInstall approximately 1,200 linear feet of new 6 -inch diameter CL Sahara Drive to distribution piping near the discharge of the Sirocco Well. The 4 1R.5 Sirocco Drive Saguaro Drive new pipes should be installed in public right of way. The existing $90,000 E pipes should be abandoned to eliminate pipe crossings in the rear of private lots. ri Isolation Valve Valve Island Estates and Installation of up to 52 isolation valves in public right of way will D.2 Improvements Sunny Meadows reduce the need for City staff to access back yards during 5156,000 Phase 1 Subdivisions maintenance and repairs and allow more customers to stay online ` during emer encies. Isolation Valve Interstate Installation of two isolation valves in the vicinity of the crossing A D.3 Improvements Highway 182 may help to prevent complete shutdown of the crossing during $ i 0,000 Phase 2 Crossing maintenance and repair activities. This improvement would tie the Northwest Commons irrigation Northwest Northwest pivot directly to the irrigation system and meter the pivot at the DA Commons Pivot Commons point of withdrawal. This will allow the City to operate the s30,000i Improvements Subdivision Northwest Commons Well independently of the pivot. Proposed pipe is 8 inches in diameter. Activate Dry This improvement is an operational improvement that consists of G DS Systems _ activating the portions of the City's irrigation system which are 2 currently not in use. 13- 1444.407 Page ES -14 Irrigation System Master Plan December 2013 Executive Summary City of Pasco Ki7'AC Plni,'GM%1 444 -P.— W— Reeovtta Smdy1407 Fine ktgnmtnuUrtigatfou Sy51em 11QnSIGYle ¢15enwn 0 -Er u,l Sommexy.doa Table ES -6 Near -Term Capital Improvement Program Summary (continued) Group ID Project Location Project Limits Project Description Estimated or name Project Cost This improvement proposes to change the maximum water level Road 68 irrigation in the Road 66 Irrigation Tank from 639 to 641.5. It is an c „ d S.1 Tank operational change and requires no capital investment. This $10,000 ub° d Improvements project also includes inspection and repair or replace level 7 o L sensing equipment inside the Road 68 Irrigation Tank. Irrigation Well Rehabilitation and data acquisition on all wells except Village at 5.2 Rehabilitation _ Pasco Heights Weli. $220,000 Pro ram Freshwater Mussel Conduct a study to determine the most effective way to address 6 P.1 Study freshwater mussel colonization of distribution piping exposed to $25,000 Columbia River Water. a Linda l oviisa Conduct a well field study in order to determine the optimal F P.2 Well Field Study locations and sizes of new irrigation wells in the Linda Loviisa $24,000 = area. a Data Acquisition This recommendation consists of gathering data consistent with P.3 on Existing Wells Table 4 -3 as presented in Section 4. The City has resources to accomplish this project so there is no project cost. Total Budget Recommended for all Near -Term Capital Improvements I $797 00{1 Notes 1. For cost estimuting purposes, 200 linear feet of 6 -inch diameter PVC was assumed and $15,400 was added for installation of a new meter and valves. 2. See Figure 2 -1 for the location ofthe City's existing dry systems. 3. See text for detailed description of rehabilitation activities and wells involved. 13- 1444,407 Page ES -15 Irrigation System Master Plan December 2013 Executive Summary City of Pasco KATAC P j—,A31144a -P— WOW RCwmcer Sl dyW07 Phan NeFAw6mLxy,t= Soli WSia Ph¢1Srctwo a- Gxm1-5uwuary.dOCa Table ES -7 Long -Term Capital Improvement Program Summary Group ID Project Location or Name Project Limits Project Description Estimated Project Cost IRA Powerline Road Road 90 to Extend existing 16 -inch diameter main west to Road 90 to $1,000,000 aConvention Drive improve flow and eliminate dead ends. Extend existing dead -end 8-inch diameter main on Sandifur Sandifur Parkway Porto Lane to Parkway near Porto Lane along cast side of Road 44 south to $325,000 EIR,3 and Road 44 Burden Boulevard Burden Boulevard. Connect all dead -end distribution mains 9 along Road 44 to the new main. 67 Road 68 east to Installation of a 12 -inch diameter main between existing IR.6 Wrigley Drive Convention Drive distribution mains on Road 68 and Convention Drive. This 5212,500 c improvement requires additional right -of -way. a This improvement proposes installation of a redundant 12 -inch 600 Zone PRV diameter source of supply to the 600 Zone. The ultimate size and D.1 Supply 600 Zone routing of the pipe and source zone would be chosen by the City $915,000' A at a latter time once right of way, easements, or land can be acquired between the two zones. i This improvement proposes installation of a signal converting T.1 Road 52 Telemetry Road 52 station to improve communications from the central telemetry $35,000 QV ` Improvements system to the Powerline Road Well, Road 52 Well, and [•, Northwest Commons Well. S.3 Village at Pasco heights Well Village at Pasco Construction of a new well at Village of-Pasco Heights. This $173,000 Replacement Heights project assumes that the existing pump and motor will be reused. o � 0 0 9 Construction of well houses to enclose existing wells and S.4 Well Houses associated equipment. It is assumed that a total of seven well $455,000 houses will be built at a project cost of $65,000 per well house. 13- 1444.407 Page ES -16 Irrigation System Master Plan December 2013 Executive Summary City of Pasco K:ITAC IhojucSS13 Nl 4 -P0. Wt. R¢wnrces Sw y O1 41w lkcpantionVrtippliaa swLk "M... pl_n Se g0-La «move5 ---Y Jo Table ES -7 Long -Terns Capital Improvement Program Summary (continued) Group ID Project Location Project Limits Project Description Estimated or Name Project Cost K E Construction of Up to six new irrigation wells could be necessary to improve the 0 o S.5 New Irrigation irrigation system capacity. For budgeting purposes, a project cost $3,696,0003 rr P` Wells of $616,000 per well has been assumed . 2 E d Conduct a rate study to see if irrigation system rates are adequate. PA Rate Study The rate study will be informed by the selection of a capital $25,000 improvements program. c Irrigation System Update of this irrigation system master plan following major P.5 Master Plan changes to the irrigation system or after five years, whichever $30,000 Update occurs first. Total Budget Recommended for all Long-Term Capital Improvements $6 867 tltlp Notes For cost estimating purposes, 6,500 linear feet of 12 -inch diameter PVC was assumed and $100,000 was added for a pressure - reducing station. The locatiun of new wells will depend on data acquisition and the Linda Loviisa well field study. The project cost is $616,000 per new irrigation well. With a total of six wells, the total project cost is $3.70 million. It is pussible that fewer than six new wells will be necessary. 13- 1444.407 Page ES -17 Irrigation 5ystetn Master Plan December 2013 Executive Summary City of Pasco KATAC Pm,=A1 N 444 - Pa= Welu CEyp�Cts $w1�RVT PUn Rquraiiovyripaliau Sr�em M4s C� YWv15aa'�ou 0 - Era:culive Simme�y.daM SECTION I SECTION 1 INTRODUCTION Authorization On June 4, 2013, Murray, Smith & Associates, Inc. (MSA) was authorized by the City of Pasco (City) to prepare this plan. Background The City of Pasco owns and operates domestic and irrigation water utilities that provides water to residential customers and a limited number of commercial customers. Providing a system for irrigation water separate from the potable water utility allows the City's customers to avoid using treated drinking water to irrigate. The City's existing irrigation system is supplied by water from 11 groundwater wells and water pumped from the Columbia River. The City acquired the first portions of the system in 2002 from a private irrigation utility. The system has grown considerably since that time. The City uses the irrigation system annually from April 151 to October 315`. The City has established the goal of developing a capital improvements plan for the irrigation system to ensure the continued delivery of economical irrigation water to City residents. Purpose and Scope The purpose of this plan is to provide a basis for identifying, analyzing, and planning capital improvements to the irrigation system. The study includes a hydraulic analysis of the existing system which compares the existing system's performance to analysis criteria in order to identify deficiencies and develop system improvements. A capital improvements plan is developed to assist in planning future projects. Included with this plan are conceptual level project cost estimates. The system's existing groundwater wells will also be evaluated through a tabletop review of existing data. The results of this review will be used to develop preliminary recommendations for improvements, further assessment, and rehabilitation work. Irrigation System Plan Overview This plan is organized by sections. Section 2 presents an inventory of the irrigation system and its components as they currently exist and operate. The City's irrigation water rights are also discussed in Section 2. Section 3 presents analysis criteria that form the basis for identifying deficiencies in system performance and planning improvements to the irrigation system. Section 3 also includes a description of the hydraulic model and the results of the modeling analysis work. Groundwater well condition assessments are also documented in this section. Section 4 presents recommendations for improvements to the system and to the groundwater wells, as well as recommended further study and planning work. 13- 1444.407 Page 1 -1 Irrigation System Master Plan December 2013 Introduction City of Pasco KAXAC Projects11311444 - Pasco Water Resources Study \407 Plan PreparatiunUmgation System Mnstcr Plan Section 1 - lntroduction.docx SECTION 2 SECTION 2 EXISTING SYSTEM Introduction This section describes the City's existing irrigation system's supply, storage, and distribution facilities. Water rights and historical production and demand data are presented. General operations are also discussed in this section. The information in this section forms the basis for building the hydraulic model and for developing the recommendations which result from analysis of the irrigation system. Existing Irrigation System The City's irrigation system piping is polyvinyl chloride (PVC), ductile iron (DI), and steel distribution pipes ranging from 3 inches to 24 inches in diameter. Table 2 -1 shows a summary of irrigation main sizes in the distribution system. Table 2 -1 Irrigation Main Inventory by Size Diameter (inches) Length (ft) Length miles) < 6 356,347 67.49 6 w125,506 23.77 8 80,678 15.28 10 5,122 0.97 12 96,254 18.23 15 8,078 1.53 16 27,878 5.28 18 4,488 0.85 24 483 0.09 Total 711,797 134.81 The oldest parts of the system are approximately 15 to 20 years old, with most of the system constructed less than 10 years ago. Parts of the irrigation system were first acquired by the City in 2002 from Kidwell Farms, Inc., a private irrigation utility owner. This utility was part of subdivisions built by private developers. The system has six pressure zones. The largest is the 639 pressure zone. All of the system's sources of supply and storage are located in this zone. The other five zones have a lower hydraulic grade line (HGL) and are supplied from the 639 pressure zone through pressure - reducing valves. Figure 2 -1 shows an overview of the existing system. Figure 2 -2 shows a hydraulic profile of the system. 13- 1444.407 Page 2 -1 Irrigation System Master Plan December 2013 Existing System City of Pasco KAFAC Projects1L311444 - Pasw Water Resources Study1407 Plan Prep"ionUkvgation System Master Plan\Section 2 - Existing System docx -zr- Fig— 2.1 EXISTING CITY IRRIGATION SYSTEM C7.1 -7 -------- VY ji, 'WON l.j I L I IT WELL PaV —AT lAELLN 0 E Tk!r I S `, wA]CD HEIGHTS Ll O. CITY OF PASCO L r p—M 4 T:f; t�-,j LQ L_. 7— I - As 0 T -i"IL .2, !,WE 700 — WEST w— EAST —700 i:�i m."ilao 639 ZONE 600 — a € -snv -! 60(} — Gaa ZONE _..___ ... 560 ZONE 547 iP p p P ZONE P I 1 I Sao — 1_ P P a 500 � a a 400 — P. P ",•�i°' 4aa RIVER glj g 3 g INTAKE �I . ZONE 300 -- 300 LEGEND ASIBRE1MMN8 - 2CWE 6.W lME Rx'1 ELEV lox FT EdE SW (WE YW') ffxl G_LL RR WIMRF - M,E 6E0 1w YC NW. GMiL11G - EONE MI (1% 6R11 GE m o ELLYAT,N ---- Rim Ix,4 E.E 6abSTEA Gull 6TAEIp1 m fti a iWT E P" GE tT lRCxAnE °� „F� YKYF WF11 PWP WAI LEVEL Supply The City's irrigation system is supplied by groundwater produced from 11 wells located throughout the system and surface water pumped from the Columbia River. All sources of supply pump to the system's main service zone, referred to as the 639 pressure zone. Supply to lower zones is accomplished through the use of pressure- reducing stations. Groundwater Supplies The City's irrigation wells range between 135 and 245 feet deep and are completed in an unconfined alluvial aquifer consisting mainly of sand and gravel. The wells range between 1 and 39 years old. Roughly half of the wells are constructed with perforated casing and the others with stainless steel, wire wrap well screen. The reported production capacities range between 450 and 2,500 gpm. Table 2 -2 summarizes the City's irrigation wells. Most of the City's irrigation wells are located on concrete pads and are open to the atmosphere with nearby electrical equipment in weatherproof enclosures. The Desert Sunset and Sirocco Wells are enclosed within buildings. The City has current capital improvement projects planned to construct new well houses around the First Place Well and the Linda Loviisa Well. The construction of these well houses is intended to prevent damage to equipment from exposure and reduce noise levels to nearby properties when the pumps are operating. None of the wells have backup power supply. Surface Water Supplies In addition to groundwater wells, the City uses water pumped from the Columbia River for irrigation supply. The river intake pump station conveys water directly to the Road 108 Booster Pump Station located on the west side of the system. The Road 108 Booster Pump Station pumps the irrigation water to the irrigation distribution system. Irrigation water pumped from the river is metered through a master meter at the Road 108 Booster Pump Station. Since there are no services between these two stations, all of the water pumped is metered prior to distribution and use. Water Rights Summary The City's current irrigation water rights are a combination of water rights issued by the Washington State Department of Ecology (DOE) and water rights which were given to the City by private parties. The City's annual irrigation water rights total 7,592.9 acre -ft. Table 2 -3 shows a summary of the City's existing irrigation water rights. Storage The irrigation system has one storage tank located near the intersection of Sandifur Parkway and Road 76. The storage tank sets the hydraulic grade for most of the City's system. The 13- 1444.407 Page 2 -4 Irrigation System Master Plan December 2013 Existing System City of Pasco K ITAC_Projeclsll }11444 - Pasco Water Resources StudyAO? Plan PreVWationllrrigalion System Master P1aznlSection 2 - Existing System docx storage tank serves the 639 pressure zone by gravity, so the water is able to serve the other pressure zones at lower elevations through pressure - reducing stations. Table 2 -2 Irrigation Well Summary Notes 1. Below ground surface 2. Gallons per minute 3. Horsepower The storage tank is referred to as the Road 68 Irrigation Tank. Construction of the tank was completed in 1992 and it was originally used as a potable water storage tank. The tank was repurposed for use in the irrigation system in 2006. The tank is a welded steel standpipe with an approximate volume of 2.62 million gallons (MG) when full. The City currently operates the tank below full at a volume of 2.28 MG. The tank has a diameter of about 55 feet and the current water storage height is 126.5 feet which corresponds to an elevation of 639 feet above mean sea level (AMSL). The maximum water storage height is 147.5 feet or 660 feet AMSL. The tank has approximately 18,000 gallons of storage per vertical foot of storage 13- 1444.407 Page 2 -5 Irrigation System Master Plan December 2013 Existing Systein City of Pasco K.`TAC_Projec 0311444 - Pa Water Resources Smdyk407 Plan Preps ncnUrrigation Systcm Master PIanlSxtion 2 - Existing System.doox Year Depth Fixed/ Average Motor Size Well Name Constructed (BGS') Pump Type Variable Production (H�) S eed Rate m } Desert 1951 152 Submersible Fixed 650 75 Estates Desert Vertical Sunset 1929 202 Turbine Variable 1,450 150 Vertical First Place 2007 123 Turbine Variable 2,500 350 Island 1976 190 Submersible Fixed 450 50 Estates I -182 Unknown 134 Vertical Variable 1,850 200 Turbine Linda 2012 205 Vertical Fixed 1,100 150 LOviisa Turbine Northwest Vertical Commons Unknown 203 Turbine Variable 1,300 150 Powerline Vertical Road 1980 171 Turbine Fixed 1,900 200 Vertical Road 52 2006 185 Turbine Variable 2,350 250 Sirroco 1976 222 Vertical Variable 1,400 150 Turbine Village of Pasco 1975 184 Submersible Fixed 1,000 125 Heights_ Notes 1. Below ground surface 2. Gallons per minute 3. Horsepower The storage tank is referred to as the Road 68 Irrigation Tank. Construction of the tank was completed in 1992 and it was originally used as a potable water storage tank. The tank was repurposed for use in the irrigation system in 2006. The tank is a welded steel standpipe with an approximate volume of 2.62 million gallons (MG) when full. The City currently operates the tank below full at a volume of 2.28 MG. The tank has a diameter of about 55 feet and the current water storage height is 126.5 feet which corresponds to an elevation of 639 feet above mean sea level (AMSL). The maximum water storage height is 147.5 feet or 660 feet AMSL. The tank has approximately 18,000 gallons of storage per vertical foot of storage 13- 1444.407 Page 2 -5 Irrigation System Master Plan December 2013 Existing Systein City of Pasco K.`TAC_Projec 0311444 - Pa Water Resources Smdyk407 Plan Preps ncnUrrigation Systcm Master PIanlSxtion 2 - Existing System.doox height. The tank is equipped with an impressed current cathodic protection system. It was fully recoated in 2008. Table 2 -3 Irrigation Water Rights Summary Well Name Water Right' QF ( m) Qa (acre -ft) Approximate Pumping Ca aci m) First Place G3- 01243C 1,400 558.0 2,500 Desert Sunset G3- 20243P(B )i 214 107.9 1,450 G3- 20243P(C) 1,174 441.6 Island Estates G3- 20242C B) 1,134 504.0 450 Sirocco G3-20243P(B) 214 107.9 1,450 G3- 28452C 450 172.0 Road 52 G3- 20242P(A) 1,430 636.0 2,350 Village of Pasco Heights G3- 23525C 1,300 660.0 1,000 Northwest Commons G3-20243P(A) 1,612 483.6 1,300 G3-20243P(B)l 214 107.9 Desert Estates G3- 24981C(A) 80 41.9 750 G3- 24981C B) 400 155.9 Linda Loviisa G3- 202440 1,880 759.8 1,000 G3- 24978C 1,600 660.0 G3 -263 88C F 400 164.0 I -182 G3- 24978C 1,600 660.0 1,850 G3- 26368C 400 164.0 Powerline Road G3- 27413P(B 270 108.1 1,900 G3- 27413P(C) ° 573.75 203.4 281.25 112.6 -G3-27413P(D) G3- 27413P(F ) 270 108.0 Road 108 Booster Pump Station G3- 27413P(C )":z 573.75 203.4 3,000 S3- 28615C 1,643 732.0 S3- 28788C 139 56.0 S3- 28789C 121 48.0 S3- 28790C 195 200.0 S3- 28932C 1 597 1 240.0 Total Rights 17,164 7152.8 19,000 Notes 1. Indicates that water right is shared 2. This water right has two points of withdrawal 3. G indicates a groundwater right; S indicates a surface water right. 4. Q; is the instantaneous allowable flow; QQ is the average annual allowable volume 13- 1444.407 Page 2 -6 Irrigation System Master Plan December 2013 Existing System City of Pasco KATAC_ProjectsO\1d44 - Puw Water Resource Study1467 Plan Preparation\1uiga6on SysIem Master PIanLSmion 2 -Existing System.doex Distribution The distribution system consists of pipe ranging from 3 inches in diameter to 24 inches in diameter. The majority of the system piping is PVC with parts of the system in ductile iron (DI) or steel. Pressure Zones The irrigation system has six pressure zones. The zones are separated by pressure - reducing stations which allow zones with a higher hydraulic grade to supply zones having a lower hydraulic grade with water. Table 2 -4 summarizes the pressure zones. Table 2 -4 Pressure Zone Summary Zone Maximum Hydraulic Storage Supply Facilities General Location or Name Grade (ft AMSL) Facilities Service Area Road 68 All groundwater Main portion of 639 639 Irrigation wells irrigation system Tank 600 600 No storage No supply Chapel Hill facilities facilities subdivision 594 594 No storage No supply Desert Estates facilities facilities subdivision 560 560 No storage No supply Loviisa Farms facilities facilities 547 547 No storage No supply First Place facilities facilities subdivision River No storage Columbia River Intake near 1 -182 Intake 549 facilities Intake Station bridge over Columbia Booster Pomp Stations The City currently has one booster pump station in its irrigation system. This is the Road 108 Booster Pump Station located at the intersection of Road 108 and Crescent Road in the western portion of the irrigation service area. The design capacity of this station is 3,000 gpm. This station is used to boost water pumped from the Columbia River Intake Station to the 639 Pressure Zone. Another pump station is planned for construction in 2013. This station will be called the Harris Road Booster Pump Station and will be located on Harris Road near Interstate 182. This booster pump station has a design capacity of 3,125 gpm. The station will also pump water supplied by the Columbia River Intake Station to the distribution system. 13- 1444.407 Page 2 -7 Irrigation System Master Plan December 2013 Existing System City of Pasco KATAC_Projects11311444 - Pa5 W Water Resources S tttdy1407 PWi Prtpatationitrrigatioa System Master PIan55mtion 2 - )="tmg System.dou Dry Systems The City's irrigation system includes portions that are installed and ready for use, but not currently used. These systems are referred to as dry systems. The existing dry systems are shown in Figure 2 -1. Table 2 -5 shows a summary of the current dry systems. Table 2 -5 Dry System Summary Subdivision Name Number of New Connections Estimated Acrea a fac) Broadmoor Estates 304 90.67 Broadmoor Place 233 62.33 Desert Oasis 170 54.17 Desert Plateau 304 108.48 Total 1,011 315.65 Interties to Other Systems The irrigation system is not connected to any other irrigation or water distribution systems. The irrigation system was formerly connected to the City's potable water distribution system through a backflow prevention device. The City completely removed the connection in 2006. Irrigation System Demands This section presents information on irrigation water production and demands. The City typically uses its irrigation system from April to October every year. Production is monitored and recorded by meters on each of the system's wells. Some large users are metered, but most connections to the system are not currently metered. Production Records Total system production is the sum of water produced by the irrigation system wells and water pumped from the Columbia River, Figure 2 -3 shows total system production from 2006 to 2012. As seen from the figure, system production has increased steadily from 2006 to 2012. The City performed two studies related to water use; one in 2001 and one in 2007. The study from 2001 includes information cited in this report on irrigation water use for public facilities and agriculture. The 2007 study contains more recent data on residential irrigation water usage which are also used in this report. Overall System Usage Historical production data was used to calculate overall system usage and peaking factors. The City has collected hourly data on all of its source meters and its storage tank for the past 13- 1444.407 Page 2 -8 irrigation System Master Plan December 2013 Existing System City of Pasco K:17AC_Projects113M444 -Pasta Water Resources Study\4D7 Plan Prepaation%lrTigaticn System Master Plan\Sect1on 2 - Existing System.docx three years. This data was used to analyze variations in demand and to develop the average day demand (ADD), maximum day demand (MDD), and peak hour demand (PHD). The results of this analysis are shown in Table 2 -6. 7,000 w 6,000 U 5,000 0 0 4,000 .ti 0 E. 3,000 a� 2,000 ca F 1,000 0 Figure 2 -3 Total System Production 2006 2007 2008 2009 2010 Year Table 2 -6 Peaking Factor Summary 2011 2012 Year 2012 2011 2010 5,786 1,885.28 5,439 1,552.61 4,062 m 6,118 5,572 5,038 m d 8.810 4,765 4,527 Maximum Day Demand m 9,700 8,487 9,704 m d 13.968 3,513 13.973 3,000 1 8/8/2012 8/2/2011 8/8/2010 Peak Hour Demand m 17,529 15,116 16,077 d [,m 25.241 21.767 23.151 our 6:00 AM 10:00 AM 6:00 AM MDD /ADD (Average: 1.662 1.586 1.476 1.926 2006 2007 2008 2009 2010 Year Table 2 -6 Peaking Factor Summary 2011 2012 Year 2012 2011 2010 Total System Production MG 1,885.28 1,722.40 1,552.61 Average Day Demand m 6,118 5,572 5,038 m d 8.810 8.282 7,255 Maximum Day Demand m 9,700 8,487 9,704 m d 13.968 12.221 13.973 Date 1 8/8/2012 8/2/2011 8/8/2010 Peak Hour Demand m 17,529 15,116 16,077 d [,m 25.241 21.767 23.151 our 6:00 AM 10:00 AM 6:00 AM MDD /ADD (Average: 1.662 1.586 1.476 1.926 PHD/MDD (Average: 1.748) 1.807 1.781 1.657 PHD /ADD (Average: 2.895) 2.865 2.628 3.191 13- 1444.407 Page 2 -9 Irrigation System Master Plan December 2013 Existing System City of Pasco K:YTAC_Pmjects \13 \1444 - Pasco Water Resource Study \407 Plan PreparatiuuVrrigation System Master PIaztLSection 2 - Existing System.docx The irrigation system has grown since the City began acquiring the system in 2002. The City classifies connections to the system as either residential, billed on a flat fee basis, or connections for customers billed by the acre. These larger accounts are typically commercial irrigation customers and include public schools, parks, apartment complexes, and sports facilities. Table 2 -7 shows the number of connections to the system each year. Table 2 -7 Irrigation System Connections Summary Year Residential Connections Customers Billed by Acre 2006 2,964 - 2007 3,351 - 2008 4,053 - 2009 4,403 - 2010 4,812 - 2011 5,159 22 2012 5,379 23 2013 5,434 25 Production has kept uniform pace with the number of connections to the system on an annual basis. Since 2006, the production per residential connection to the system has remained relatively constant at 1,575 gallons per day per connection per year. Residential Demands The City does not meter water use on residential connections to the irrigation system. Residential irrigation use varies widely across the City's service area and is dependent on economic factors, maturity of the landscaping, and whether or not the property is irrigated using domestic or irrigation water. The City studied residential water use patterns in a 2007 memorandum and determined that residential irrigation usage averages 3.18 acre -ft per gross acre per year or 5.31 acre -ft per irrigated acre per year. The memorandum is attached as Appendix B. Commercial Demands Commercial users of the City's irrigation system include public schools and the City of Pasco Department of Parks and Recreation. Irrigated facilities include a soccer complex, a track facility, a softball complex, and five residential City parks. The soccer complex is metered. Commercial irrigation usage varies according to the facility. City park use varied from 19 gallons per square foot to 34 gallons per square foot. Water use at the athletic facilities averaged 40 gallons per square foot which is higher than the rest of the system. 13- 1444,407 Page 2 -10 Irrigation Systetn Master Plan December 2013 Existing System City of Pasco KATAC Projeuts11311444 -Pasty Water Rtwur a Study1407 Plan Preparatiodffrrigation System Master Pian\Section 2 • Existing Systendoc Agricultural Demands The City of Pasco supplies irrigation water to three pivots from its system. Crops which are commonly grown at the three sites vary annually and include wheat, alfalfa, and potatoes. The pivots and land are not owned by the City. They include: • single pivot located at Linda Loviisa Farms • single pivot near the Northwest Commons Well • single pivot north of Powerline Road near the Powerline Well All of the pivots are served directly by the system except for the pivot at the Northwest Commons Well. The Northwest Commons pivot may only run when the Northwest Commons Well is operating. Each pivot connection is metered. Pivot acreages were calculated by scaling aerial photo maps. An annual demand of 3.30 acre -ft per acre was used to estimate the annual water usage of each of these pivots. This estimated demand was calculated as part of a water usage study prepared by the City in 2001. Table 2 -8 shows a summary of the agricultural demands. Table 2 -8 Summary of Agricultural Demands General Operating Procedures City staff use a process referred to as staging to operate the irrigation system. In each stage, various wells or combinations of wells are selected for production. Each stage includes more pumps than the previous stage. When an additional pump is called to operate, it is referred to as a step up. When a pump is called to stop, it is called a step down. The system uses a delay between stepping up or stepping down to minimize pump cycling and prevent dramatic increases or decreases in pressure and flow. The order of pumps is chosen by the operator and varies on a regular schedule. The maximum number of stages is set by the operator and varies up to 11, which is the number of well pumps in the system. The system has the ability to operate manually or automatically via a master telemetry unit. Under automatic control, pumps are called to operate based on signals from pressure sensors within the system. The Island Estates Well, Sirocco Well, I -182 Well, and Desert Sunset 13- 1444.407 Page 2 -11 Irrigation System Master Plan December 2013 .Existing System City of Pasco K:STAC_Praj=isH351444 • Pasco Water Resawces Study1407 Plan Preparation\lydgation System Master Plan%Section 2 - Exmumg Sysmn.docx Instantaneous Estimated Irrigated Estimated Annual Pivot Demand m Acreage acres) Usage acre -ft Powerline Road 380 125.7 414.8 Linda Loviisa 580 72.1 237.9 Northwest 560 73.5 242.6 Commons Total 1,520 1 271.3 895.3 General Operating Procedures City staff use a process referred to as staging to operate the irrigation system. In each stage, various wells or combinations of wells are selected for production. Each stage includes more pumps than the previous stage. When an additional pump is called to operate, it is referred to as a step up. When a pump is called to stop, it is called a step down. The system uses a delay between stepping up or stepping down to minimize pump cycling and prevent dramatic increases or decreases in pressure and flow. The order of pumps is chosen by the operator and varies on a regular schedule. The maximum number of stages is set by the operator and varies up to 11, which is the number of well pumps in the system. The system has the ability to operate manually or automatically via a master telemetry unit. Under automatic control, pumps are called to operate based on signals from pressure sensors within the system. The Island Estates Well, Sirocco Well, I -182 Well, and Desert Sunset 13- 1444.407 Page 2 -11 Irrigation System Master Plan December 2013 .Existing System City of Pasco K:STAC_Praj=isH351444 • Pasco Water Resawces Study1407 Plan Preparation\lydgation System Master Plan%Section 2 - Exmumg Sysmn.docx Well are equipped with pressure sensors that communicate with the telemetry system. If a low pressure is registered at any of these sites and lasts for 30 seconds, a new pump is called to operate. This is called a low pressure step -up. When a pressure sensor sends a high pressure alarm that lasts for 10 seconds, the stage will step down. This is called a high pressure step -down. When the tank level is low, the stage is stepped up. This is referred to as a low tank level step -up. As long as the level remains low, additional pumps will be called to operate until the level rises above the low tank set point or the maximum stage is reached. If there is a high tank level signal, the stage is stepped down until the tank level falls below the high tank set point. Water Quality Water for the irrigation system is not treated. Available water quality data is attached in Appendix A. Agreements with Kidwell Farms, Inc. The City supplies irrigation water to three sites owned by Kidwell Farms, Inc. The three sites are the Northwest Commons subdivision, the Linda Loviisa Subdivision, and land leased from the Washington State Department of Natural Resources in Section 16, T -9 -N, R- 29-E. The City leases use of the Northwest Commons Well for an annual flat fee. The other pivots are connected to the system and a flat fee is paid to the City by Kidwell Farms for the connection. The fee varies by site and Kidwell Farms agrees to pay all maintenance and electrical costs associated with its use of the City facilities. Rate Schedule The City bills most of its customers based on a flat fee for connection to the irrigation system. Some large users are billed by the number of irrigated acres. Some users are billed by an irrigation unit which is defined as 5,000 square feet of irrigated area. The City's rate schedule and fees associated with the irrigation utility are summarized in Table 2 -9. Summary This section presented information on the existing irrigation system including sources of supply, storage facilities, and the distribution system. Current demand data and trends were documented. General operation of the system was explained and the irrigation rates charged to customers are shown. The next section will present the hydraulic analysis of the irrigation system and the well condition assessments. Findings from each of these analyses will be discussed. 13- 1444.407 Page 2 -12 Irrigation System Master Plan December 2013 Existing System City of Pasco KATAC_Projects11311444 - Pww Water Resources Study1407 Plan Prepara:ionl[rrigation S}stem Master PlanlSection 2 - Existing Systendou Table 2 -9 Irrigation Utility Fees and Rates Summary Irrigation Service Type Fee/Charge Reference Irrigation water service; monthly rate during uTigation season: Base rate per unit for single - family residential properties $26.00 13.61.190(A) Base rate per unit for non-single-farnily non-single-family residential property $26.00 13.61.190(B) Per irrigation unit $8.12 13.61.190(C) Per irrigated acre (public parks, playgrounds, and open spaces) $75.81 13.61.140(D) Unauthorized turn -on any repair cost additional) $50.00 13.61.040 Disconnect/connect service due to violation $50.00 13.61.100 Annuals stem availability fee $88.00 16.61.060 13- 1444.407 Page 2 -13 Irrigation System Master Plan December 2013 Existing System City of Pasco KATAC_Projee1911311449 - Penn Warr Resources Stvdy \407 Plan PrepmlioAlrrigalion System Mw1a Plmn Scetion 2 - Existing Systemdocx SECTION 3 SECTION 3 CRITERIA, ANALYSIS, AND FINDINGS Introduction Section 3 presents a hydraulic analysis of the City's irrigation system and an assessment of the City's irrigation wells. The irrigation system analysis criteria include pressure, flow velocity, and storage criteria. A description of the analyses and associated findings are also presented. Irrigation System Analysis This section describes analysis of the irrigation system which uses a hydraulic model to simulate pressure and flow conditions in the system under several demand conditions. Model Layout The initial layout of the hydraulic model was completed by tracing pipes and junctions over the City's GIS data. Graphical and tabular data provided by the City were used to locate critical hydraulic elements such as the Road 68 Irrigation Tank, wells, pumps, and pressure reducing stations. Once initial layout was completed, the irrigation piping system was then skeletonized to simplify the layout and increase modeling efficiency. Skeletonization is a process that consolidates multiple real pipes into hydraulically equivalent single pipes. For this model, the majority of skeletonization converted dead ends to demands at a single node where the real pipe branches away from the system. Skeletonization was not performed on pipes larger than 8 inches in diameter. The modeling software's terrain extraction (TREX) program was used to apply elevations to the model nodes. The TREX program has the ability to apply elevations to hydraulic model nodes using a representation of a three- dimensional surface. The representation, usually contours, can be constructed using United States Geological Survey (USGS) data. The contours are superimposed on the model layout and the distance to the nearest two contours is used to interpolate the elevation of every node in the model. The final node elevations in the model are indicative of the surface elevation. The accuracy of the data and the final product is within 5 feet, which gives calculated pressures accurate to approximately 2 pounds per square inch (psi). Pipe Characteristics The hydraulic modeling software uses default modeling properties for common pipe materials. The City's irrigation system was modeled using the Hazen - Williams theory of 13- 1444.407 Page 3 -1 Irrigation System Master Plan December 2013 Criteria, Analysis, and Findings City of Pasco K:9AC_PMJec1s\B11444 - Pmw Water Rcscwre Smdy1407 Plan PrsparationVr igation System Mwtcr PlanlSeaion 3 - Analysis and Eindings.docx pressurized flow. For PVC pipe, an initial C value of 150 was used. An initial value of 140 was used for steel pipe and 120 for ductile iron pipe. Water Demand Distribution The demands presented in Section 2 were distributed throughout the model using a nearest node method. The nearest node method assigns known demands with a known spatial distribution to the nearest node in the system. ArcGIS, a GIS software program, was used to identify irrigated parcels. The area and the geographic center of each parcel was calculated by the GIS program. This information was used to assign the geographic area of each parcel, in acres, to the nearest node in the model. To convert each node's area assignment to a water demand, the demands from Section 2 were used. The total irrigated area in 2012 was approximately 1,492 acres. The PHD from 2012 was approximately 17,529 gpm. The known point demands were subtracted from this total and assigned to the appropriate location in the model. Based on information received from prior water demand studies performed by the City, it was determined that the remaining total irrigation system demand could be distributed evenly across the irrigated area. This method gives an average demand of 11.75 gpmlacre which was then applied universally to all of the nodes in the hydraulic model. The modeled demand is within 1 percent of the demand measured by the City's SCADA system. Wells Wells were modeled using flow control valves attached to virtual reservoirs with a HGL higher than the rest of the City's system. The flow control valves were set to reflect the documented production rates of each well. Model Calibration Model calibration was completed using data collected by the City's SCADA system. The system collects and logs information from the system every 30 to 60 minutes. Monitoring points on the system include well discharges, booster pump station discharges, and the storage tank. Pressure and flow data were known at each pump discharge point within the system during the peak hour. The tank level was not known, so it was estimated using data from nearby points within the system. Flows from each of the wells were modeled using flow control valves. The initial simulation of the model produced hydraulic grade calculations at each well. These calculated hydraulic grades were then compared to the known hydraulic grades collected by the SCADA system and served as the primary calibration criteria. After several iterations, pipe roughness coefficients were universally lowered to a value of 130. All of the hydraulic grades were then within 4 percent of the target grades. Well calibrated models typically have discrepancies of 10 percent or less. Table 3 -1 shows the results of the calibration. 13- 1444.407 Page 3 -2 Irrigation System Master Plan December 2013 Criteria, Analysis, and Findings City of Pasco KATAC_Pro}easll31i444 - Pasw Wate Resources Siudy 407 Plan Prepamiongrrigation System Master PlanVScariun 3 - Analysis and Findings -dual Table 3 -1 Hydraulic Modeling Calibration Summary Well Flow Target (gpm) Flow from Model (gp m HGL Tar et HGL from Model Discrepancy ( °lo Island Estates 590 590 610.5 612.47 0.3 Linda Loviisa 443 443 628.6 611.92 -2.7 1 -182 1238 1,238 651.6 638.94 -1.9 First Place 1663 1,663 649.9 642.72 --- 1.1 Sirroco 1415 1,415 640.0 653.29 2.1 Desert Estates 491 491 634.4 617.16 -2.7 Desert Sunset 1418 1,418 628.2 618.46 -1.6 Northwest Commons 0 0 629.1 627.01 -0.3 Road 52 2125 2,125 644.4 634.34 -1.6 Powerline 1758 1,758 657.8 637.53 -3.1 Village Pasco Heights 936 936 622.6 614.52 -1.3 Analysis Criteria Once the physical layout and calibration of the model were completed, the model could be used to analyze flow velocities and pressures within the system. The analysis criteria used to evaluate the hydraulic performance of the irrigation system include minimum system pressures and maximum flow velocities. Any result not meeting these criteria is subject to further investigation and potential corrective action. Flow Velocities For this analysis, pipes whose flow velocities exceed 5 feet per second (fps) under average day demand conditions are considered to have inadequate capacity. Pipe flow velocities are allowed to increase up to 8 fps during PHD conditions. Any pipes with flow velocities above 8 fps under PHD conditions are considered to have inadequate capacity. These velocity limits reflect standard industry practices for acceptable flow velocities in pressurized piping systems. They are chosen to limit excessive head loss in the system. Irrigation System Pressures The City's pressure criteria at service connections are summarized below. These pressure criteria are based on industry standards, Uniform Plumbing Code requirements, and a review of landscape irrigation equipment water pressure requirements. Each service connection should maintain a minimum water pressure of 30 psi during all demand conditions. 13- 1444.407 Page 3 -3 Irrigation System Master Plan December 2013 Criteria, Analysis, and Findings City of Pasco KSTAC Projects11311444 - Pasco Water Resources Sludy1407 Plan Prepararionllrriga[ion System Master PlanlSection 3 - Analysis and Findiags.doca 2. No service connection should exceed a water pressure of 120 psi. Individual customers are responsible for reducing water pressures over 80 psi if they desire to do SO. 3. During a failure of any part of the system, the maximum water pressure at customer meters will not exceed 150 psi. System Storage This analysis uses standby storage recommendations provided by the Washington State Department of Health (DOH) for drinking water systems as water storage criteria because the City does not have established water storage criteria for its irrigation system. The DOH typically recommends that drinking water systems provide 150 minutes of water storage during peak demand conditions and that this storage be available to all customers at a minimum pressure of 30 psi. The City does not use the irrigation system to provide fire suppression, so no fire suppression storage is provided. Model and Analysis Findings The calibrated model was used to simulate two scenarios: 2012 conditions and an anticipated future demand condition. Modeling included the City's existing dry systems, but did not include any new pipes or new developments. The results of each analysis are described below. Existing Conditions Existing conditions were modeled using 2012 PHD conditions. These conditions are the same as those used for the calibration of the hydraulic model. Two pipes in the system exceed the flow velocity criteria of 8 fps under PHD conditions. These pipes are 4 inches in diameter and located adjacent to the Sirocco Well discharge. All analysis criteria were satisfied with regard to system pressures. The results are summarized below: • The system does not experience pressures over 120 psi under any demand condition. In order to verify that maximum allowable pressures were not exceeded, a low - demand condition was used to approximate static conditions. • The system experiences pressures over 80 psi near discharges for wells and the Road 108 Booster Pump Station during high production. None of the locations which experience pressures between 80 and 120 psi serve customers. They are typically located on dedicated transmission mains and are caused by topography. • Low system pressures were not predicted by the model under this scenario during normal tank levels. If the storage tank water surface elevation reaches 600 feet AMSL, the system begins to experience isolated low pressures. • No part of the system experiences pressures over 150 psi during a failure of pressure - reducing valves. It is possible that pumps could fail in such a manner as to cause high system pressures downstream of their discharges. 13- 1444.407 Page 3 -4 Irrigation System Master Plan December 2013 Criteria, Analysis, and Findings City of Pasco K:STAC_Projecls113i1444 -Pasco %i Resources SmdyM7 flan Preparalionllrrigation System Master PlalilSeclion 3 -Analysis and Findings.docx A graphical summary of modeling results for the existing conditions scenario is shown in Figure 3 -1. Future Conditions The calibrated model was used to predict the hydraulic performance of the City's irrigation system under anticipated future conditions. The future condition assumptions are: • All of the City's current dry systems are connected and in use • All of the City's existing subdivisions are fully developed • All of the City's sources are producing the maximum allowed flows simultaneously These assumptions represent near -term conditions that could occur within the next two to five years. The actual timing of these conditions is dependent on a number of variables. Any changes in the following conditions would alter the analysis results: Expansion of the irrigation system service area beyond assumed service limits Additional sources of supply Changes in water rights High system pressures were found near the discharges of wells and pump stations as in the 2012 PHD scenario. No pipes that serve customers directly experienced high pressures. No low system pressures were found by the model. High flow velocities were found by the model at two locations: Near the discharge of the Sirocco Well as observed in the 2012 PHD scenario North of the intersection of Road 52 and Sandifur Parkway A graphical summary of modeling results for the future conditions scenario is shown in Figure 3 -2. Storage The system storage was evaluated at projected peak hour demand conditions to determine whether or not enough storage is available in the system. The City currently operates the tank at a water level of 126.5 feet which corresponds to an elevation of 639 feet. At this level, the tank provides a total storage of 2.28 MG. The overflow of the tank is at elevation 660 feet. Water stored below elevation 597.5 feet is considered dead storage according to the storage criteria described above. The volume of dead storage in the tank is approximately 1.51 MG and the volume of active storage in the tank, as currently operated, is approximately 0.77 MG. The maximum possible average day demand was calculated by dividing the sum of the City's annual irrigation water rights by the days in service. This demand, 7,744 gpm, was used to 13- 1444.407 Page 3 -5 Irrigation System Master Plan December 2013 Criteria, Analysis, and Findings City of Pasco KATAC Pmjects113%1444 - Pasco Water Resources SmdyA07 Plan ProparationUrrigation System Maslcr PlanlSatson 3 - Analysis and Findings.doex HYDRAULIC M013ELING RESULTS FOR EXISTING CGNDMONS ti FX 7 F 'TJ ar� ------- ------- WELL QE;f." jT VmMIE Wa :Z. N� MY OF PASCO IL IN llL"lY III! ELL PabaTelACE _RV 4 T T­ TIM E-2 T­" LE'n F1 Fla '211:_ �L ------------ Figure 3-Z d cily f Pa.- _ 4 an _jr, p , lrrigat�cn System Mader PI HYDRAULIC MODELING RESULTS FOR FUTURE CONDITIO14S MSA it 3,­07 ----------------- 7 r E-1 U-1 �LL WC -NER "TAn 3 -19LAXE E-1 Ti f LL CITY or PAsco we P" ol E c jL . . . . . . . . . . T `11 r -T, calculate a projected peak hour demand of 22,419 gpm. A peak hour demand peaking factor of 2.895 was used. This demand would be met by a combination of the City's wells and storage. It was assumed that all of the City's sources would be pumping at the current instantaneous water right of 17,164 gpm. The tank would need to provide approximately 5,255 gpm for 150 minutes at a minimum pressure of 30 psi. Based on this analysis, the system requires approximately 788,250 gallons of storage for the projected peak demand, not including dead storage. Based on this analysis, the existing irrigation system reservoir has adequate capacity to meet these storage needs. Operations and Maintenance Problems The City experiences some operations and maintenance problems with the irrigation system which are described below. Northwest Commons Well Use The Northwest Commons well is plumbed so that it supplies the City's irrigation system and a nearby agricultural pivot simultaneously. Whenever the well is being operated, the pivot must also operate. Any water produced in excess of the pivot's requirements flows to the irrigation system. The City currently allows a private third party to use the well to operate the pivot, limiting the City's ability to use the well. The agreement under which this well is operated is attached as Appendix C. Freshwater Mussels Some parts of the irrigation system which convey water drawn from the Columbia River experience annual buildup of freshwater mussels in the piping. The most problematic area of the mussel infestation is in the piping between the Road 108 Booster Pump Station and the crossing under Interstate I -182. During the summer, high flows dislodge some mussels from the pipe walls which can cause operational problems such as plugging. Access to Pipes in Island Estates and Sunny Meadows The original irrigation system piping that was constructed by private developer Water, Inc. is located in the Island Estates and Sunny Meadows subdivisions. These pipes were installed in easements located in the less accessible alignments on private property. City operations staff may have difficulty accessing these areas for routine or emergency maintenance. Interstate Highway 182 Crossing Irrigation water supplied by pumps from the river intake station and the Road 108 Booster Pump Station is conveyed underneath Interstate Highway 182 to serve the majority of the City's irrigation system. The crossing ties into a pipe near Quadra Drive adjacent to the 13- 1444.407 Page 3 -8 Irrigation System Master Plan December 2013 Criteria, Analysis, and Findings City of Pasco K•- ITAC_Projects11311444 - Pao Water &esourea Study1407 Plan Prwaration\lntation System Master Plan\Section 3 - Analysis and Findings,doex interstate highway. Discussions with City staff indicate that a complete shutdown of the highway crossing is usually necessary to perform system maintenance and repairs in this area because of inadequate local isolation valving. Telemetry System and Communications According to discussions with City staff, the Powerline Well, Road 52 Well, and the Northwest Commons Well all rely on the same radio for communication with the system. If this single radio were to fail or be compromised, communication and control at all three sites would fail. City staff have indicated that the radio has experienced some irregular communication problems in the past. Data collected by the City's supervisory control and data acquisition (SCADA) system indicate that there is a problem with the remote level sensor in the Road 68 Irrigation Tank. Data received for the last several years does not include accurate or consistent readings on the tank water level. Well Condition Assessment A tabletop condition assessment of the City's groundwater supply wells was completed as part of this plan. The assessment consisted of gathering and analyzing available information. The objective of this analysis is to identify wells having apparent construction, performance, or water quality issues that may be limiting production with the purpose of developing a targeted approach at candidate wells to regain performance and optimize individual and combined system production. The results of this assessment are discussed below. Data Review and Gap Analysis The following information was provided by the City and was used in assessing the irrigation supply system: • Water Rights • Driller's well logs • Well construction records • Aquifer test results • Specific capacity • Well inspection reports • Well video surveys • Water quality data • Well usage information • General notes and observations gathered by City operations staff 13- 1444.407 Page 3 -9 Irrigation System Master Plan December 2013 Criteria, Analysis, and Findings City of Pasco K IITAC_Projects113\1444 - Pasw Water Re ourm Smdy \407 Plan PrepatationlImption Systeitt Mmia PIanlSecrion 3 - Anatysls and Findings.dorx All of the wells have some information available, but there are some data gaps that result in recommendations for further assessment. A tabular summary identifying the data available and the data gaps is presented in Table 3 -2. Observations and Analysis The results of the well condition assessments are summarized as follows: • Review of available information for the Desert Sunset, Sirocco, NW Commons, Island Estates, l- 182, and Powerline Road wells indicated the presence of biofouling and incrustation which are possibly plugging screens and perforations. Significant accumulations of sediment or debris in the wells are also noted. • Observations indicated minor mineral and biological deposits within the First Place and Desert Estates wells. • Based on the information provided and relatively newer construction, the apparent conditions of the Road 52 and Linda Loviisa Wells are considered good. Table 3 -3 ranks the wells in terms of priority, potential for improvement, and overall condition assessment. The Desert Sunset Well received the highest priority ranking which means that it should be the first well to receive maintenance and rehabilitation. The Sirocco well has the highest potential for improvement which means that its capacity could be improved the most. The Desert Sunset Well received the highest condition assessment ranking indicating that it is in the worst overall condition. The overall assessment found that there are opportunities for well performance and yield improvements. The three highest - ranking wells in need of improvements are the Desert Sunset Well, the Sirocco Well, and the Northwest Commons Well. Table 3 -4 presents a summary of the well condition assessments. Summary This section presented an analysis of the City's irrigation system. The distribution system was analyzed using a hydraulic model. Current conditions and an anticipated future condition were modeled. Low pressures and high velocities, as defined by the analysis criteria, were noted. The irrigation system storage was analyzed for deficiencies. The condition of the City's groundwater supply wells was also assessed. The results of these analyses will be used in Section 4 to develop recommendations for improvements to the irrigation system. 13- 1444.407 Page 3 -10 Irrigation System Master Plan December 2013 Criteria, Analysis, and Findings City of Pasco K:ATAC_Project M1 1444 - Pasco Water Resources StudyA07 Plan Prcparationllrrigation System Master Ptan'Section 3 - Analysis and Pindings.docx Table 3 -2 Irrigation Well Data Summary and Gap Analysis' Nn'. 1, A rank o1`4 ipdicates best qual'ay data and a rank oft) indicates no data available 2. Spwificcapacsty 13- 1444,407 Page 3 -11 Irtigaum Sy ism Master Plmt Dacemher 2013 Critena, —ab sa, and Fi chugs (.try nfyascn kv .cr,.v..,"„..•o..e,.wx.o.,w vwworrm � r .srnu -W SK•m, ..f,a..arw.•,«. Watts Lveatlav Uelll" Weli Agalfer Feat Sped4e Well ln,P•elloa or WeD Water Well Uaage Hotta apd Well klghle Map Well Leg Copatruetian bees an3 Mal ale Cnpaelty M.. Reba MI.Non D .H video Sur QvaDrr Data Infarmalluv obaervellana Cammensa end pat. Gip, • 407 gpsn/fl SC (source. 4-ir pntnptest b3 Layne) • Canst —iivn apparent from video log does cwt rnatchdrillus D—e Estates 4 4 4 4 4 4 4 l 0 _ 4 Iog of CIty's apeeihcadoxx sheet • iixtensive Dio£o mg obzrved during wtll vide' survey eeluded ads ssas5manlofa %inn oonditsous • 3,591 pyan✓a $C (savrre, 2 -hr slop -rate test/ cotalmrcd by Laynr, 3 steps, wish f t two only lasting app,.. 10 min tech Fbi Place 2 4 4 a - - 4 4 0 2 4 ateP) •1426 gmnlft SC m cn. MSA • 856 gpmlft SC (aour 45 -how pump rest cond_d at Village al 4 4 4 _ _ 4 4 0 4 variable rat, by Gseen Valley Pump Servr es; quality of test data Pasco Heigbts Del Z d n! !a829 gpnJft SC (so.— MSA) q • Well log mentions pump mss eomplewd, bin reel claw not Desen Sunset 4 4 ' 3 0 _ y 4 I 2 duen acrd •24m PA, blh-. e-Nsa Icd an 71612065 • No available agaikr testing data W-1 rmales _ 4 4 4 0 0 4 4 1 _ 4 • Cnnstn,etwv noted on drill's log not connst•m wiili v.d- lag • 22 m Nitrate -N —led on WN2005 • 1 1.333 gpor 1B SC (soruw- MSA); lacks detailed —11 dNa 1 -182 _ 4 4 4 0 1 _ 4 1 2 3 • 28 rnglL Nrnam N sampled rm 3l1d2905 _ • 1,333 gpml0 SC (sourer. 4 -la wctl u tby Layne)'. 2.200 gp,wft SC (source'. MSA) • Welk i`"clioo sepan5 do rws numb wnscxnrsmn pored an draler's log Read 52 2 4 4 4 0 .. _ 1 0 2 3 • Well inapccuon relwns sided "5766 NW Commons cell' hounvm, dv appear m march Road 52 wdl somlxvctwn • No video log provided for review, exi56�g wrvli[ ion was defined to the axkal passible. vamgobaary ,-. made dwing well in Irian• Puu'vlinc Road 4 4 4 9 0 0 4 0 _ 4 ' Litdc date avai]abls • Pe,[..t A casing sp, nb—d 4ubtg rodeo survey does Doc 5lrocen _ 4 4 4 0 0 0 4 1 2 _ match we11 crosauvcnon noted drillers -11 lag; • 2S uSaC e{N s 1/112065 • 11 An ) • R.Is h "ted December 2007 (sonic blaatmg, Wiimg w remove N-u—st sedrmaoq Cotvmans 2 4 1 1 0 2 4 _ 0 2 4 • Well issspcction m} m end video s—y ewervmrons do rot match wnstruvtian nosed vn db.1k, s well log • Well con L.W. mfamrasion taken fmm well inspemiov aM rcbabiliwtian re Linda Laviisa ? 4 3 -0 0 0 0 0 1 0 •New vrclt conatmcled De- 1,2012 Nn'. 1, A rank o1`4 ipdicates best qual'ay data and a rank oft) indicates no data available 2. Spwificcapacsty 13- 1444,407 Page 3 -11 Irtigaum Sy ism Master Plmt Dacemher 2013 Critena, —ab sa, and Fi chugs (.try nfyascn kv .cr,.v..,"„..•o..e,.wx.o.,w vwworrm � r .srnu -W SK•m, ..f,a..arw.•,«. Table 3 -3 Irrigation Well Ranking Summary Well Improvement Priority Improvement Condition 5 Rank Potential Rank Assessment Rank Desert Sunset 1 4 1 Sirocco 2 1 4 Northwest • Accumulated sediment/debris in well approaching intake depth setting. • Heavy biofouling; precluded adequate assessment of existing conditions from video survey. Commons 3 3 3 Island Estates Observations and Findings 4 2 5 1 -182 5 7 6 Table 3 -4 Well Condition Assessment Summary Well Observations and Findings • Well is 39 years old and is approaching the typical life expectancy for groundwater supply infrastructure (commonly assumed to be between 30 and 50 years in normal groundwater environments). • Flow to well is through perforated casing rather than a more efficient, engineered well screen. Desert Sunset ' Static and pumping water levels are within perforated interval. • Approximately 45 ft of accumulated sediment /debris possible (video depth < reported depth) • Bottom depth of open - interval span not known. • Accumulated sediment/debris in well approaching intake depth setting. • Heavy biofouling; precluded adequate assessment of existing conditions from video survey. ■ Moderate incrustation of perforations previously reported. * Well is 37 years old and is approaching the typical life expectancy for groundwater supply infrastructure (commonly assumed to be between 30 and 50 years in normal groundwater Sirocco environments). • Flow to well is through perforated casing rather than a more efficient, engineered well screen. • Major biofouling present, mostly encompassing and possibly plugging perforations. ■ 17 ft of sedimentldebris buildup in bottom of well? (video depth < reported depth) • Well age is unknown. • Previously rehabilitated (Dec -07). Northwest ■ Flow to well is through perforated casing rather than a more efficient, engineered well screen. Commons • Major biofouling present, mostly encompassing and possibly plugging perforations. • Approximately 3 ft of accumulated sediment /debris in bottom of well. • Accumulated sediment/debris near intake. 13- 1444.407 Page 3 -12 Irrigation System Master Plan December 2013 Criteria, Analysis, and Findings City of Pasco K:ITAC Pmjects1131t444 - Pasco Watur Resources Study\407 Plan PrepwalionUrrigation Sysicm Mastnr P1anlSmtion 3 - Analysis and Findings.docx Table 3 -4 Well Condition Assessment Summary (continued) Well Observations and Findings - Well is 38 years old and is approaching the typical life expectancy for groundwater supply infrastructure (commonly assumed to be between 30 and 50 years in normal groundwater environments). Island Estates • Approximately 9 feet of sediment/debris buildup blocking three feet of perforated interval? (video depth < reported depth) ■ Flow to well is through perforated casing rather than a more efficient, engineered well screen. • Major biofoulin resent, mostly encompassing and possibly plugginE perforations. • Well is 34 years old. I -182 • Approximately 2 feet of sediment/debris accumulation in well? (video depth < reported depth) - Some biofouling and incrustation of well screen present, blocking roughly 25% of open area. Powerline Road ' Well is 33 years old. ■ Varying degree of biofoulin resent minor to major). First Place ' Well is 6 years old. • Minor biofouling present at top and bottom of well screen. • Well is 31 years old. Desert Estates ■ Minor scale /mineral deposits on well screen. • Some minor corrosion observed near bottom of screen. • Well is 38 years old and is approaching the typical life expectancy for groundwater supply infrastructure (commonly assumed to be between 30 and 50 years in normal groundwater environments). - Approximately I ft of sediment/debris accumulation in well/screen bottom? ■ Heavy incrustation/mineral deposits, approximately 50 to 80% of screen open area estimated to be blocked . Village at Pasco ■ The well is equipped with a sand filter. Heights • Casing noted to have been pulled back to 159 ft bgs during screen exposure, roughly 3 ft above top of screen assembly. • Gap from casing pullback could be allowing formation material to enter well. ■ Small gap noted during review of video survey, though may be from separated casing joint /weld • Blasting cap debris previously observed in well; possibly from previous rehabilitation. May have caused the separation noted above. - Well is 7 years old. - Inspection report notes damage to top of well screen; no video log available for review to Road 52 confirm or assess. • Besides noted damage, the well screen (based on inspection report photos) appears in relatively good condition. - Ins ection report notes stainless steel banding material in well. Linda Loviisa - New well constructed December 20I2 • No inspection reports or well video survey available for review 13- 1444.407 Page 3 -13 Irrigation System Master Plan December 2013 Criteria, Analysis, and Findings City of Pasco KATAC_Projeci0 311444. - Pasco Water Resources SrudyA07 Plan PreparationUrrigation System Master PlanlSeclion 3 - Analysis and Pindingv.duex MULA SECTION 4 kil SECTION 4 RECOMMENDATIONS Introduction. Section 4 presents recommendations based on the analysis and findings of Section 3. Recommendations for improvements to wells, improvements to the irrigation system, and opportunities for further planning and study are provided. Improvements Completed Since 2005 The City of Pasco has completed irrigation system improvements that were recommended as part of its 2005 I -182 Corridor Irrigation System Plan (2005 Plan). Table 4 -1 shows a summary of the improvements recommended in the 2005 Plan that have since been completed. Table 4 -1 Irrigation System Improvements Completed Since 2005 Improvement Number j from 2005 Plan I Project Description IW -1 Construction of the First Place Well IW -2 Existing Well Rehabilitation IW -3 Existing Well Rehabilitation IW -4 Future Well Rehabilitation IW -5 Future Well Rehabilitation IW -6 Future Well Rehabilitation Conversion of Road 68 Standpipe from domestic system to IS -1 irrigations stem I13-1 Construction of the Harris Road Booster Pump Station ( cun-ently under construction 16 -inch diameter irrigation main from Court Street to Harris Road IR 1.1 Booster Pump Station (currently under construction) 16 -inch diameter main along Harris Road from Harris Road Booster IR L2 Pump Station to Broadmoor Boulevard (currently under construction 16 -inch diameter main from Broadmoor Boulevard to Sandifur IR 1.3 Parkway Construction of 10 -inch diameter PVC main from I -182 Well to IR 1.5 system IR 1.7 16 -inch diameter irrigation main along Road 52 from Leopard Drive (Powerline Road) to Sandifur Parkway In addition to these improvements as described by the 2005 Plan, the City has completed the construction of two additional new irrigation wells. Construction of improvement IR 1.4 is 13- 1444.407 Page 4 -1 Irrigation System Master Plan December 2013 Recommendations City of Pasco KATAC ProicctsF1 311444 - Pasco Water Resources StudyA07 Plan Preparationurrigation System &fasrer PIan%Se Lion 4 - Rewrnmendatiuns.docx no longer necessary because the City constructed an irrigation main along Sandifur Parkway to the tie -in point proposed by improvement IR 1.4. The main along Sandifur Parkway accomplishes the same hydraulic task as the main which had been proposed by IR 1.4. The City is currently completing design for a project proposing construction of a new river intake near the City's existing river intake station. The new intake would be used exclusively for drinking water and the old intake would be converted to irrigation use. Distribution System Improvements Recommended improvements to the distribution system include irrigation main extensions, replacement of undersized mains, looping improvements, isolation valve installation, and other minor improvements. Each is discussed below. Irrigation Main Improvements Irrigation main improvements include replacing undersized pipes to reduce head loss, extending existing mains, and looping mains to improve connectivity and reliability of the system. Recommended irrigation main projects are: • Extend arterial main on Powerline Road west to Road 90 • Extend arterial main on Powerline Road east to Road 52 • Extend arterial main on Sandifur Parkway east and south along Road 44 to tie in at Burden Boulevard • Extend distribution mains on Sahara Drive west to Road 44 • Replace small- diameter pipes on Sirocco Drive near Sirocco Well discharge with larger pipes • Extend existing main on Wrigley Drive from North Road 68 to Convention Drive. Completing this improvement requires right of way or easement acquisitions. Approximately 22,000 linear feet of new irrigation main are recommended for construction. The total estimated project cost for these improvement is approximately 52.77 million. An itemized tabulation of irrigation main projects and their associated costs is included later in this section. Interstate Highway 182 Crossing Isolation Valve Improvements It is possible to make complete shutdown of the Interstate Highway 182 crossing less frequent by installing isolation valves in the system nearby. This would allow operations staff to shut off portions of the line along Quadra Drive instead of the main crossing in order to make repairs. Repairs on the main crossing would still require the crossing to be shut down. 13- 1444.407 Page 4 -2 Irrigation System Master Plan December 2013 Recommendations City of Pasco KATAC_Projects113ll444 - Pasco Water Rcsnllr� Study1407 Plan PrepuatianUn*ation System Master Plan\Sedion 4 - R�nunendations. doca Based on a review of available information, it is recommended that the City install two 12- inch diameter isolation valves near the highway crossing. For budgeting purposes, a project cost of $5,000 per valve has been allowed for a total project cost of $10,000. It is recommended that the installation of the valves be done between October 31 and April 1 when the irrigation system is not in use. Island Estates and Sunny Meadows Distribution Isolation Valve Improvements The Island Estates and Sunny Meadows subdivisions have irrigation systems that were installed in easements that run through the rear of residential lots. When one of these older mains breaks, City operations staff have difficulty getting access to residents' back yards to make repairs, Where possible, it is recommended that isolation valves be installed so that mains can be turned off from public right -of -way while repairs are made. It is recommended that the installation of the valves be done between October 31 and April I when the irrigation system is not in use. It is recommended that an estimated preliminary budget of $156,000 be provided to complete these improvements. This estimated budget is based on the installation of up to 52 valves at $3,000 per installation. The number of proposed isolation valves recommended is based on a review of the City's GIS data. It is further recommended that City staff identify final locations of the isolation valve improvements and confirm the final budget for this work. Northwest Commons Well and Pivot The Northwest Commons Well is currently plumbed to serve the nearby irrigation pivot and the City's irrigation system.. It is recommended that the City install piping and valves near the well that allow the irrigation pivot to be supplied from the system instead of just the well. This new connection should be metered. The direct connection from the well to the pivot should be abandoned. This will allow the City to use the Northwest Commons well on its own schedule and allow the pivot owner to operate the pivot without operating the well. The estimated project cost for this recommendation is approximately $68,000. Telemetry Improvements Based on discussions with City staff, it is recommended that the City upgrade communication capacity along Powerline Road with the installation of a fiber optic line. The fiber optic line would serve as a more reliable means of communication from the central telemetry unit to the Powerline Well, Road 52 Well, and Northwest Commons Well. Having two ways to communicate to the wells makes the system more reliable as well. The estimated project cost for this recommendation is approximately $35,000. Source and Storage Improvements Recommendations for storage and irrigation well improvements are discussed below. 13- 1444.407 Page 4 -3 Irrigation System Master Plan December 2013 Recommendations City of Pasco K:9AC_ProjecLsl] 311444 -Paw Water Resources Study5407 Plan PrepatationUkrigation System Master Plan Section 4 - Rmotruncndatiom . doc Storage The storage analysis presented in Section 3 found that the existing irrigation system reservoir has adequate storage capacity for the future conditions described if the reservoir is operated at a higher water level. It is also recommended that existing new water level sensing equipment be repaired or replaced to obtain more accurate water level readings. The estimated project cost for this recommendation is $10,000. Irrigation Well Improvements The results of the analysis presented in Section 3 were used to develop recommendations on irrigation well assessment, rehabilitation, replacement, and monitoring. A discussion of these recommendations is presented below. Well Assessment and Rehabilitation Plan The analysis presented in Section 3 was used to develop a well assessment and rehabilitation plan. The plan prioritizes candidate wells for further assessment and potential rehabilitation for the purposes of optimizing individual well performance and maintaining the value of the City's irrigation assets. This plan is developed to ensure that this asset remains in service for the long term at minimal operating costs. The main objective for rehabilitating a well is to restore or prevent losses in both production capacity and well efficiency. Conditions routinely found to contribute to declining well performance include incrustation, biofouling, physical plugging of formation or screen or both, and corrosion. These conditions could be caused by inherent characteristics of the aquifer, well design and construction, water quality, well operations, or combinations thereof. Rehabilitation techniques used to address these conditions in attempts to restore or recondition wells include: Mechanical methods such as brushing, surging, and airlift pumping to loosen and remove incrustation, orgaluc material, and accumulated sediment Chemical treatments designed to dissolve and weaken encrusting minerals and biological slimes Impulse generation methods (e.g., Hydropuls®) that generate high- pressure pulses that loosen mineral and biological deposits in the well and adjacent formation. This technology is typically used in combination with other mechanical and /or chemical methods to increase its effectiveness A combination of mechanical, chemical, and impulse generation well rehabilitation methods are recommended for the following wells: • Desert Sunset • Sirocco 13- 1444.407 Page 4 -4 Irrigation System Master Plan December 2013 Recommendations City of Pasco K:UAC_Prajects11 311 444 - Pasco Water Resources Study1407 Plan PreparationVnigation System Master PlanlSc tiun 9 - Reconnnendations.docx • Northwest Commons • Island Estates • I -182 • Powerline Road The recommended order of activities is as follows: 1. Conduct a one -hour specific capacity test to establish baseline conditions pre - rehabilitation and collect a groundwater quality sample for inorganic chemistry and bacterial assessment. 2. Remove pumping equipment and install rehabilitation equipment. 3. Brush and surge well to loosen buildup and airlift pump to remove debris. 4. Tremie dissolved chemical solution into the water column and agitate by surging to penetrate the formation and enhance the effectiveness of the treatment. 5. Apply impulse generation technology. 6. Remove the loosened debris by airlift pumping. 7. Conduct a video survey of the well, disinfect the well, and reinstall pumping equipment. 8. Conduct a one -hour specific capacity test to evaluate the effectiveness of the rehabilitation and assess the post - rehabilitation well performance. A combination of mechanical and chemical methods is recommended for the First Place and Desert Estate Wells to address the minor mineral and biological deposits observed. Activities to be performed would be those identified above, excluding the impulse generation efforts. Based on the information provided and relatively newer construction, the apparent conditions of the Road 52 and Linda Loviisa Wells are considered good and no rehabilitation efforts are recommended at this time. It is recommended that well video surveys be completed at these wells to verify existing conditions and monitoring each well's yield and drawdown. This work will establish baseline performance conditions and monitor for potential performance declines over time. It is recommended that no rehabilitation work be completed for the Village at Pasco Heights Well due to its age and poor condition. Based on an evaluation of the well rehabilitation is not likely to adequately address the significant incrustation, poor casing condition, and sanding conditions at this well. The recommended rehabilitation activities for each well are summarized in Table 4 -2. Well Data Acquisition Section 3 identified gaps in the available information concerning the City's existing irrigation water supply wells. A list of recommendations to fill those data gaps was developed and is presented in this section. Table 4 -3 shows a summary of the proposed data acquisition 13- 1444.407 Page 4 -5 Irrigation System Master Plan December 2013 Recommendations City of Pasco K:STAC_YrujectsUN444- Pasco Water Resources Study5407 Plan PrwpazalionUrriyalinn Systam Mmm Pla O;wion4-Rno endalzm.ducx activities. It is assumed that the City has the resources necessary to complete the recommended activities, so a project cost was not developed for this work. Table 4 -2 Recommended Well Rehabilitation and Performance Testing Activity Summary Island Estates X Rehabilitation and Performance Testing Activities Well Mechanical Chemical Impulse Generation Pre- and Post- Performance Testing Video Surve Desert Sunset X X X X X Sirocco X X X X X NW Commons X X X X X Island Estates X X X X I X I -182 X X X X I X Powerline Rd. X X X X X First Place X X with rehabilitation activities. Assess available drawdown and evaluate the X X Desert Estates X X rehabilitation activities. Assess whether the yield can be increased at this X X Road 52 A well field study should be performed to determine the optimal sizes and Linda Loviisa locations of new wells in the Linda Loviisa area. More information is X X Linda Loviisa X X Village at Pasco Heights Table 4 -3 Irrigation Well Data Acquisition Recommendations Summary Well Recommended Data Ac uisition Activities Northwest Conduct a specific capacity test to confirm yield and reassess whether the Commons yield can be increased at this well. Establish the pump intake depth setting. This can be done in conjunction I -182 with rehabilitation activities. Assess available drawdown and evaluate the ability to increase yield at this well. Conduct a specific capacity test. This test can be done in conjunction with Island Estates rehabilitation activities. Assess whether the yield can be increased at this well. A well field study should be performed to determine the optimal sizes and Linda Loviisa locations of new wells in the Linda Loviisa area. More information is presented below. Village of Pasco Heights Well Replacement It is recommended that a new well be drilled to replace the existing Village of Pasco Heights Well. To confirm the timing and need for this improvement, it is recommended that the well's yield and drawdown be monitored to assess changes in its performance over time and 13- 1444.407 Page 4 -6 Irrigation System Master Plan December 2013 Recommendations City of Pasco K:STAC_Projws51311444 - Pasco Water Resources Stody1407 Plan PreparationUrdeation Syslctn Mastu PLan Section 4 - Recoa- nendati —,doex plan for replacement. The estimated project cost for a replacement well is approximately $173,000. A detailed cost summary is provided in Appendix D. Construction of New Irrigation Wells Based on the assessment presented in Section 3, up to six new wells could be necessary. These new irrigation wells would be a mixture of wells meant to replace some of the City's existing irrigation wells and wells improve the City's irrigation system capacity. For budgeting purposes, a project cost of approximately $616,000 per well has been developed. A detailed cost summary is available in Appendix D. The number of new irrigation wells that will be necessary will not be known until a well field study and data acquisition have been completed. The capital improvements program presented in this section assumes that all six wells will be necessary. Well Houses It is recommended that the City continue to improve its wells by enclosing them within well houses. Enclosures minimize potential damage to equipment from exposure and reduce noise levels. Well houses also improve the security of the well and add aesthetic value to the vicinity. The estimated project cost for this improvement is approximately $65,000 per well house. Well Performance Monitoring Program It is recommended that the City implement a monitoring program at all existing wells to track well performance and plan for periodic well maintenance, rehabilitation, and potential replacement. The recommended monitoring plan consists of bi- annual measurements of specific capacity from each well. The specific capacity measurements should be made prior to system start-up in the spring and following system shut -down in the fall. The process is described below: • Measure the static water level from a common measuring point during a period when the well has been idle. • Measure the pumping water level from the same measuring point after 30 and 60 minutes of pumping. • Maintain a constant pumping rate and record the flow rate at 30 and 60 minutes of pumping. • Calculate the specific capacity for each well. The specific capacity is the pumping rate divided by the amount of drawdown. Drawdown is calculated by subtracting the static water level from the pumping water level. The specific capacity measurements for each well should then be monitored over time to evaluate the need for maintenance and rehabilitation. Water levels should also be recorded 13- 1444.407 Page 4 -7 Irrigation System Master Plan December 2013 Recommendations City of Pasco KATAC_Projws11311444 - Pasco Water Rmurees Study1407 Plan Preparaliontlrriga [non System Master PlanlSxtion4 - Re nmiendawi .docx during periods when the well has been idle to assess whether apparent changes in specific capacity are actually related to well performance or groundwater level declines in the aquifer. Dry Systems It is recommended that the City begin using its existing dry systems. According to predictions based on hydraulic modeling, the City's existing irrigation system has the hydraulic capacity to support the new systems. This operational change does not have any associated capital cost as long as no new pipe is required to connect the dry systems to the existing system. Recommendations for Further Study and Planning During the course of this study, opportunities for further study that could improve planning efforts for the City's irrigation system were identified. This section presents those findings. Well Field Study It is recommended that a well field study be completed in order to determine the optimal locations and sizes of new irrigation wells in the Linda Loviisa area. These wells will increase the irrigation system capacity. A budget of $24,000 is recommended for this work. Freshwater Mussels It is recommended that the City conduct further investigation on the nature of the freshwater mussel infestation in the western portion of the system near the Road 108 Pump Station. Depending on the type of mussel, there may be federal or state regulations regarding acceptable ways to clear the pipes. The mussels should be identified and the extent of the infestation determined via television inspection or some other means. In the meantime, it is recommended that the City decrease pressure at the Road 108 Pump Station or limit its use. This may limit or halt the spread of the freshwater mussel colonization. A budget of $25,000 is recommended for this work. Rate Structure Study The City currently charges a flat rate to residential customers. Large customers are billed by irrigated acre. Some of its larger customers are served and billed according to undocumented verbal agreements. Industry experience has shown that the use of water under this rate structure is relatively uncontrolled. It is recommended that the City undertake a rate study and a financial review. The results of this work will assist the City in developing rates that ensure that the current level of service is maintained and that funds are available for capital projects and system growth. A budget of $25,000 is recommended for this work. 13- 1444.407 Page 4 -8 Irrigation System Master Plan December 2013 Recommendations City of Pasco K:\TAC_ProjecOl 3 \1444 - Pasco Water Resources Study140 Plan Prepua1ionVmgalion System Maria Plan\Sution 4 - Ke nanendatlum.docx Irrigation System Master Plan Update As the City's irrigation system grows and additional water rights are acquired, the City should re- evaluate its capital improvements plan and check on the performance of the hydraulic system. This plan should be updated every five years or sooner to reflect major system expansions or changes as well as any significant changes in water rights. As part of this study it is recommended that the skeletonized hydraulic model be further developed to include all system piping. A budget of $30,000 is recommended for this work. Project Cost Estimates Project cost estimates were developed for all recommended irrigation system improvements. The project cost estimates include construction cost with a 10 percent contingency, sales tax, and a 35 percent allowance for administration, engineering, and legal services. The cost estimates developed are commensurate with a Class 4 cost estimate as defined by the American Association of Cost Engineers. The actual cost can vary from 30 percent under to 50 percent over the estimated cost. Appendix D includes data and detailed breakdowns of the project costs for the recommended system improvements. Since construction costs change periodically, an indexing method to adjust present estimates in the future is useful. The Engineering News Record (ENR) Construction Cost Index (CCI) is a commonly used index for this purpose. For purposes of future cost estimate updating, the September 2013 ENR CC] for Seattle, Washington is 10147.96. Summary This section presented recommendations for capital improvements to the irrigation system and maintenance programs. These recommendations were based on analysis of the system as presented in Section 3. Tables 4 -4 and 4 -5 include tabulated summaries of all recommended improvements and their associated estimated project costs. The recommendations are separated into near -term improvements and long -term improvements. Near -term improvements are those which should be completed within the next one to five years. Long- term improvements should be completed in six to twenty years. Figure 4 -1 shows the City's irrigation system with recommended improvements highlighted and the dry systems operational. 13- 1444.407 Page 4 -9 Irrigation System Master Plan December 2013 Recommendations City of Pasco KATAC_Projuts11311444 -Pasty Water Resourcm Study1407Plan Prepa tionCIrrigation System Muter PlanlSection4 -Rec mnendatiunn.docn Table 4 -4 Near -Terin Capital Improvement Program Summary Group ID Project Location or Name Project Limits Project Description Estimated Project Cost Road 56 to Road Extend existing 16 -inch diameter main east to Road 52. The new IR.2 Powerline Road 52 main may be built in right of way that is being platted as part of $186,000 the construction of a new elementary school at the intersection. West along Sahara Extend two 4 -inch diameter distribution retains on Sahara Drive Drive from end of Vest to the existing 12 -inch diameter main on Road 44. This IRA Sahara Drive existing mains to improvement provides a redundant connection to the rest of the $46,000 Road 44 system if the connection at Burden Boulevard is out of service for B any reason. m c Install approximately 1,200 linear feet of new 6 -inch diameter Q Sahara Drive to distribution piping near the discharge of the Sirocco Well. The IR.5 Sirocco Drive Saguaro Drive new pipes should be installed in public right of way. The existing $90,000 pipes should he abandoned to eliminate pipe crossings in the rear d of private lots. Isolation Valve Island Estates and Installation of up to 52 isolation valves in public right of way will o D.2 Improvements Sunny Meadows reduce the need for City staff to access back yards during $156,000 j; Phase 1 Subdivisions maintenance and repairs and allow more customers to stay online during emer encies. Isolation Valve Interstate Installation of two isolation valves in the vicinity of the crossing A D.3 Improvements Highway 182 may help to prevent complete shutdown of the crossing during $10,000 Phase 2 Crossing maintenance and repair activities. This improvement would tie the Northwest Commons irrigation Northwest Northwest pivot directly to the irrigation system and meter the pivot at the D.4 Commons Pivot Commons point of withdrawal. This will allow the City to operate the $30,0001 Improvements Subdivision Northwest Commons Well independently of the pivot, Proposed pipe is $ inches in diameter. °i Activate Dry This improvement is an operational improvement that consists of a DS Systems activating the portions of the City's irrigation system which are currently not in use.' 13- 1444.407 Page 4 -10 Irrigation System Master Plan December 2013 Recommendations City of Pasco KATACPmjecl WU444 -Pe Wn Retourta Srvd,5407 Pk- IN Rxummmdal.p¢q.d- Table 4 -4 Near -Term Capital Improvement Program Summary (continued) Group ID Project Location Project Limits Project Description Estimated or Name Project Cost This improvement proposes to change the maximum water level Road 68 Irrigation in the Road 68 Irrigation Tank from 639 to 641.5. It is ao [ u a S.1 Tank operational change and requires no capital investment. This 510,000 um Improvements project also includes inspection and repair or replace level a 0 sensing equipment inside the Road 68 Irrigation Tank. I— S.2 Irrigation Well Rehabilitation Rehabilitation and data acquisition on all wells except Village at $220,000 Program Pasco Ileigbts Well.' Freshwater Mussel Conduct a study to determine the most effective way to address P.1 Study freshwater mussel colonization of distribution piping exposed to 525,000 Columbia River Water. M s~ Linda Loviisa Conduct a well field study in order to determine the optimal = c P'2 Well Field Study locations and sizes of new irrigation wells in the Linda Loviisa $24,000 area. p, Data Acquisition This recommendation consists of gathering data consistent with P 3 on Existing Welts Table 4 -3 above. The City has resources to accomplish this project so there is no project cost. Total Budget Recommended for all Near -Term Capital Improvements $797 000 Notes 1. Far cost estimating purposes, 200 linear feet of 6 -inch diameter PVC was assumed and $15,000 was added for installation of a new meter and valves. 2. See Figure 2 -1 for the location of the City's existing dry systems. 3. See text for detailed description of rehabilitation activities and wells involved. 13- 1444.407 Page 4 -11 Irrigation System Master Plan December 2013 Recommendations City of Pasco K,TACY y, J$ 11 311 44 4 - V— W— Pssomces Smdy5407 Ylen ReCaretuuUmgelia ¢S,t M.9 Plnn45 n]po 4- Reeamnrd.16..d.. Table 4 -5 Long -Term Capital Improvement Program Summary Group ID Project Location Project Limits Project Description Estimated or Name Project Cost IR.1 Powerline Road Road 90 to Extend existing 164ch diameter main west to Road 90 to $1,000,000 Convention Drive improve flow and eliminate dead ends. E Extend existing dead - end 8 -inch diameter main on Sandifur IR.3 Sandifur Parkway Porto Lane to Parkway near Porto Lane along east side of Road 44 south to $325,000 E and Road 44 Burden Boulevard Burden Boulevard. Connect all dead -end distribution mains Ealong Road 44 to the new main. Road 68 east to Installation of a 12 -inch diameter main between existing y ' IR.6 Wrigley Drive Convention Drive distribution mains on Road 68 and Convention Drive. Thus 1212,500 c improvement requires additional right -of -way. This improvement proposes installation of a redundant 12 -inch 600 Zone PRV diameter source of supply to the 600 Zone. The ultimate size and D 1 Supply 600 Zone routing of the pipe and source zone would be chosen by the City $915,0001 Ca at a later time once right of way, easements, or land can be acquired between the two zones. This improvement proposes installation of a signal converting i~ E T.1 Road 52 Telemetry Road 52 station to improve communications from the central telemetry 835,000 lruprovements system to the Powerline Road Well, Road 52 Well, and H ENorthwest Commons Well. E 5.3 Village at Pasco Heights Well Village at Pasco Construction of a new well at Village of Pasco Heights. This $173,000 J Replacement Heights project assumes that the existing pump and motor will be reused. o 0 6 �M. E Construction of well houses to enclose existing wells and S.4 Well Houses associated equipment. It is assumed that a total of seven well 5455,000 houses will be built at a project cost of $65,000 per well house. 13- 1444.407 Page 4 -12 Irrigation Systcm Master Plan December 2013 Recommendations City ofPasco K%TAC Pmje %1311444 -Penn WMVResa mSIW407 P4eo S),E{ M.A. A.6 Sc 4- Raammeodaiio��s.doen Table 4 -5 Long -Term Capital Improvement Program Summary (continued) Group ID project Location Project Limits Project Description Estimated or Name Project Cost ate.+ d S Construction of Up to six new irrigation wells could be necessary to improve the o e 8.5 New irrigation irrigation system capacity. For budgeting purposes, a project cost $3,696,0003 rn Wells of S616,000 per well has been assumed .2 M Conduct a rate study to see if irrigation system rates are adequate. m . P.4 Rate Study The rate study will be informed by the selection of a capital $25,000 a 1 improvements program. `" Irrigation System Update of this irrigation system master plan following major m P,5 Master Plan changes to the irrigation system or after five years, whichever 530,000 a" Update occurs first. Total Bud et Recommended for all Long-Term Capital Improvements $6 867 000 Notes For cost estimating purposes, 6,500 linear feet of 12 -inch diameter PVC was assumed and $100,000 was added for a pressure - reducing station. The location of new wells will depend on data acquisition and the Linda Loviisa well field study. The project cost is $616,000 per new irrigation well. With a total of six wells, the total project cost is $3.70 million. It is possible that fewer than six new wells will be necessary. 13- 1444.407 Page 4-13 Irrigation System Master Plan December 2013 Reeommendations City or Pasco R_ITnCPmjs A]711444. Pa Walc Re— Si,dy[407 PIS, Repo knUniga[nn Sys— Mp,Ia PLw1.Sa[Wn 4- Remmoxudai do rigury 4-1 C111 of 'PROPOSED IRRIGATION SYSTEM IMPROVEMENTS X.,�. � ,..- ,�..,_..._..._�rT�,._�t,_', `,` � -- !- - - - - -, ,AEI„ r -� i-i ii. !- ,�_,.,..4, OE 39 F -Ij WE. K"U." WELLI WELL OWN ..r wrote 11NER -ITO WELL FICAD ra a i iflEME- & A T ry OF PASCO -.11i, W! T313; -04t' -4-T, T4- APPENDIX A APPENDIX A WATER QUALITY DATA Appendix A includes water quality information for the water supplied by the City's irrigation system wells. Available water quality data is attached on the following pages. 13- 1444.407 A -1 irrigation System Master Plan December 2013 Appendix A: Water Quality Data City of Pasco k'hlac _projects1I311444 - pasee water resoumm smdy1407 plan preparalionViaigalion system masta planlappendices\ appendix a - water quality data. doex System Review 1D #: 664003 Types A -COMM Services System Name: Pasco Water Department _._ Residential._ 6606 __ _ Res. Population. 24746 County: Franklin Permit Color: Yellow _ Total 6666 Approved, Coliform Summary First 12 Months Second 12 Months Year _ 02 - • -- --- - T Month •. Mar _ 02 Feb- a2 0� - - an -Dec e1 Nor 0• Oct JI - Sep 01 01 -. Aug jut- 01 Jun 01 01 -May Aor EPA at Mar 01 01 -_. -Feb T Jan GO Oec 00 _ -Nov DO . co 0 0 :u _ ----------- _ - Ccl Sep Aug -Jul o !ay - Aci I Re wired Sam les 30 30 30 3G _ 30 30 30 30 30 30 30 30 _ .L --- - - - -Routines Taken 32 4C _ -,a - 3B s8 37 38 40 37 3A ~ 39 30 30_ 30 30 30 30 29 31 31 -3J - 32 - 30 30 C :0 30 3; _ _ - 31 ,1 32 31 33 32 32 Present Routines 28 Brome-OicNoromethane Present FecaUE Goii 3.1000 2950 Required Repeals _ Total Tri- Halomethane ~' Repeats Taken Water Quality Violations Violation Parameter M Violation Date Group # Name S Type 04/30192 COLI 1 Total Coliform M Minor Repeat 10131/91 COLI 1 Total Coliform S Non -Acute Lead and Copper Monitoring Summary Monitoring Period Lead Copper Samples Start to End 90th High 90th High Act Req 0711992 12, 1992 0 0070 0.0550 0.2300 0.7020 70 60 0111993 0611993 0.0040 0.0140 0.4500 0.8280 60 60 07r 1993 12, 1993 0.0040 0.0080 0.4000 0.6700 36 30 01! 1994 0611994 0.0090 0.0190 0,3420 0.4100 32 30 07i 1994 1211994 0.0030 0.0050 0.2370 0.8700 32 30 Ott 1995 1211995 0.0070 0.0140 15570 0.7750 44 30 0111996 1211998 0,0020 0.0020 01810 0,2440 30 30 Volatile Organic Chemical Samples Sample # Collected Type SO# Detects No D Not A 046 -11531 1211 2J 01 THM 92 3 2 1 EPA DOH Parameter Measurement 2941 27 Chloroform 180 20.1000 2943 28 Brome-OicNoromethane Disinfection, Chlorination. Hypechlonte 3.1000 2950 3 i Total Tri- Halomethane Sammie # 23.2000 046 -08765 09124101 THM 92 3 2 1 EPA DOH Parameter Measurement 2941 27 Chiroform 3.90 27.5000 1943 28 Bromo- Dichloromethane 3.3000 2950 31 Total Tn- Halomelhane 31.0000 046 -05160 06! 13101 THM 92 4 1 1 EPA DOH Parameter Measurement 294'. 27 Chloroform 38.7000 2943 28 Bromo-Dichforomethane 5,3000 2944 29 I7lbromo- Chotormelhane 0.5000 2950 31 Total Tri- Halomelhane 44.5000 046 -02032 03114x' 01 THM 92 3 2 1 EPA DOH Parameter Measurement 2941 27 Chloroform 20.7000 2943 28 Bromo-Gichloromemane 1.9000 2950 31 Total Tri- Halometharne 12.6000 046 -11010 12112, 00 THM 92 3 2 1 046 -08242 09120/00 THM 92 3 2 1 046-04569 06107100 THM 92 3 2 1 Inactive Sources $02 Name - _Type Use E Well #1 A & S _._T_N_.._._._R: E _ W E 350 130 9 29 22 R: E Section 14 200 180 1 9 20 18 NE - NW Treated: Disinfection, Chlorination. Hypechlonte Gross Beta inorganic Chemical Samples Sammie # Collected Tvpe SO# Detects No D Not A 062 -00466 06/20193 Ichem 02 It EPA DOH Parameter Measurement 1040 20 Nitrate -N 3.90 SOS _ - _ Name _ .__ -__ .. Type -W _ Use Dradie ST Well #4 101 -04030 E _._...__Deptt _._T_N_.._._._R: E _ Section - 350 130 9 29 22 _N E_' • NE Inorganic Chemical Samples Sampee # Collected Type SO Detects No D Not A D62 -00571 08! 30194 NIT 05 1 EPA DOH Parameter Measurement 1040 20 Nitrate -N 164a 062 -00343 05125/94 NIT 05 1 EPA DOH Parameter Measurement 1040 20 Nitrate -N 17.40 062 -00123 02/16194 NIT 05 1 EPA DOH Parameter Measurement 1040 20 Nitrate -N 17.30 062 -00858 11/30/93 Ichem 05 1 051.14434 04106193 Ichem 05 22 Synthetic Organic Chemical Samples Sample # Collected Type SO# Detects No D Not A 095 -12212 12118195 547 05 1 095 -12212 12118195 549 05 1 1 Radionuclide Samples Sample # Collected Type SO Detects No D Not A 101 -04030 04/05193 f2AD 05 3 EPA DOH Parameter Measurement 4020 39 Radium 226 i T 1.000 4000 41 Gross Aipha (Minus Uranium! 5.900 4100 42 Gross Beta J IOiS�', System Review Permanent Sources S01 -_ Name TYPe use Sample # Columbia River S P gPr? _DeJiO! T: 14 i R: E Section V. -1A 18000 0 9 1 30 3 SVV - NE Suscepy ilitlt _ Vulnerability A�Renewed Parameter Measurement Treated: Tasle ! odor Control 8 Dechionnation: Permanganate Particulate: Filtration, Rapid Sand 1064 Rapid Mix! In -Line Blender (Turbidity): Sedimentation Nitrite -N Coagulation Rgmoval: Flocculation Disinfection: Chlorination, Gaseous 046 -03458 Chlorination. Hypaehlorite Commion Control: Ph Adjustment Inorganic Chemical Samples 06107100 IOC Sample # Collected Type SO# Detects No D Not A 046 -05158 06113/01 IOC 01 9 19 15 EPA DOH Parameter Measurement 27 1025 19 FiuoAde 1064 0.770 1041 114 Nitrite -N NO 2.400 1040 28 Nitrate -N 046 -03458 0.590 1018 161 Total (NO31 NO3.) 18 0.590 1028 8 lion ND 1025 1032 10 Manganese ND 10 1915 15 Haniness Nitrate-N 68.90 1064 16 Conductivity 1055 177.0 0100 17 Turbidity 18.60 0.200 1905 18 Color NA 5.000 1057 26 TDS -Tataf Dasoied Solids Nitrit" NA 046 -04567 06107100 IOC 01 5 23 046 -09521 15 EPA DOH Parameter 4 Measurement DOH 1915 15 Hardness 27 Chloroform 58.40 06107100 1064 16 Conductivity Bromo- Dichloromelhane 046 -04570 155.0 2.400 0100 17 Turbidity 046 -03458 05104/99 0.200 046-06214 1905 18 Color 56 ND EPA DOH 1025 19 Fluoride 27 NO 10 1040 20 Nitrate-N Bromo-Dichioromethane NO 3 3100 1055 22 Sulfate 14 3 18.60 046 -03230 1057 25 TDS -Total Dissolved Solids NA 4 EPA 1041 114 Nitrit" 2941 NO Chloroform 525.2 119.95462 06114199 ASB 01 1 EPA DOH Parameter Total Tn- Halomethane Measurement 1094 115 Asbestos 524.2 01 LT 0.098 4 046 -03457 05104199 IOC 01 5 23 27 15 EPA DOH Parameter 2943 Measurement Bromo-Dlchioromettiane 1915 15 Hardness 2944 29 73.90 ND 1064 18 Conductivity 31 Total Tri- Halomethane 182.0 0100 17 Turbidity 524,2 01 3 0.200 3 1905 16 Color NO 56 3 046 -03280 1025 19 Fluoride 56 NO 046 -01549 02129100 1040 20 Nitrate -N 3 ND 05104199 524.2 01 1055 22 Sulfate 046-04812 07108198 19.60 3 1057 26 TDS -Total Dissolved Solids NA 524.2 01 3 046 -01045 02123198 IN 01 8 21 3 14 046 -03304 07101197 IN 01 7 21 15 062.00338 10113/96 NIT 01 1 2 046 -04111 10/01196 IN 01 7 21 15 111 -99186 11/03195 IOC 01 26 15 Volatile Organic Chemical Samples Sample # Collected Type SO# Detects No D Not A 046 -09521 10115101 524.2 01 3 56 4 EPA DOH Parameter Measurement 2941 27 Chloroform 046 -04570 06107100 1080 2943 28 Bromo- Dichloromelhane 046 -04570 06/07100 2.400 2950 31 Total Th- Halomethane 046 -03458 05104/99 13.20 046-06214 07112101 524.2 01 3 56 4 EPA DOH Parameter Measurement 2941 27 Chloroform 10 16.00 2943 28 Bromo-Dichioromethane 59 3 3100 2950 31 Total Tni ialomethane 14 3 19.40 046 -03230 04/18101 524.2 01 3 56 4 EPA DOH Parameter Measurement 2941 27 Chloroform 525.2 01 8.903 2943 28 Bromo- Dictloromethane 2.700 2950 31 Total Tn- Halomethane 12.00 04MO623 01/23101 524.2 01 3 56 4 EPA DOH Parameter Measurement 2941 27 Chloroform 8.900 2943 28 Bromo-Dlchioromettiane 2.700 2944 29 Dibromc- Cholomiethane ND 2950 31 Total Tri- Halomethane 12.00 046 -09306 10/16100 524,2 01 3 56 3 046 -06003 07119100 524.2 01 3 56 3 046 -03280 04/25/00 524.2 01 3 56 3 046 -01549 02129100 5242 01 3 56 3 046 -03459 05104199 524.2 01 3 56 3 046-04812 07108198 THM 01 3 2 1 046 -01064 02123/98 524.2 01 3 56 2 046 -00432 01126196 THM 01 3 2 1 Synthetic Organic Chemical Samples Sample # Collected Type SO# Detects No D Not A 046 -05161 06113/01 515.1 01 14 3 046 -04570 06/07/00 531,1 01 10 Tritium ND 046 -04570 06107100 525.2 01 60 3 046 -04570 06/07100 515.1 01 14 3 046 -03458 05104/99 515.1 01 14 3 046-03458 05104/99 525.2 01 60 3 046 -03458 05104199 531.1 01 10 046 -01046 02123/98 525.2 01 59 3 046 -01046 02/23/98 515.1 01 14 3 046 -01046 02/23198 531.1 01 10 046 -03308 08118197 515.1 01 13 4 046 -03308 07/01197 525.2 01 21 41 Radionuclide Samples Sample # Collected Type SO# Detects No D Not A 023. 68311 04118101 RAD 01 3 7 EPA DOH Parameter Measurement 4000 41 Gross Alpha (Minus Uranium) NO 4100 42 Gross Beta ND 4102 43 Tritium ND 023 -07752 10116/00 RAD 01 3 7 EPA DOH Parameter Measurement 4000 41 Gross Alpha (Minus Uranium) NO 4100 42 Gross Beta NO 4102 43 Tritium NO F System Review Emeraencv Sources SOB Name _.. I Type Use M WP WFi SOI,S08, 509. St0 I VYF 07/01197 - gpm Depth T: N I R: E Section _ `. •',: 500 160 9 24 18 NE • W; Treated: Distntecuon. Chlonnalion. H pocnionle 52 046 -03309 07101197 Name G6 Typ e Use DOH WP Well #2 WW E 9Pm.. .... .. Depth _ T: N R: E Section 11, • 'r: 1406 160 9 Conductrvitp 18 NE•_NW Inorganic Chemical Samples 17 Turgidity Sam ip a ii Collected Tvoe SO Detects No D Not A 062 -00160 04/15153 ichem 03 1 1025 EPA DOH Parameter Measurement 1040 20 Nitrate-N! Nittate•N '5,70 4.800 1055 22 Sulfate SO4 Name -- - - -.._ . - __.__- __ -. . - - j . Type . -_ Use NO WP •Weil #3 046 -04088 ; WW E _9Pfn _.__... Depth I T: N R: E Section /. •'.. 300 200 9 29 18 NE • NW S07 Name _._. _ - -� ..__ Type_- Use 062 -00122 WP -Well 1A NIT WW E T_N R E Section V�• %. 100 180 9 29 18 NE _ NW S08 Name WP • Well 1B WW E F _.SP"?..._.. Depth_ T: N R: E Section Y, • 1. I OB 179 9 29 18 NE - NVJ Inorganic Chemical Samples Volatile Organic Chemical Samples Sample # Collected Type SO# Detects No D _ Not A 046.03307 07101/97 524.2 0,6 3 55 -- EPA DOH Parameter Measurement 2943 28 Bromo- Dichfommemane 140 2944 25 Dibramo- Choicrmethane 3 6C 2942 32 Bromotorm 2.�0 111-9621, 0 C6120i 96 THM 06 5 1 111 -99909 02i07195 THM 06 2 3 1 EPA DOH Parameter Measurement _ 2941 27 Chlorctorm 10 2950 31 TczalTa- Ha ;omethane 1.10 Synthetic Organic Chemical Samples Sample # Collected Type SO# Detects No D Not A 046 -07733 10/28198 504 M 3 046 -03309 07/01197 515.1 G6 13 4 046 -03309 07i 01! 97 531.1 06 10 046 -03309 07101197 525.2 06 52 046 -03309 07101197 525.2E G6 2 Radionuclide Samples Sample # Collected Type SO# Detects No D Not A 101 -04032 04/06/93 RAG 06 3 EPA DOH Parameter Measurement 4020 39 Radium 226 LT 100 4000 41 Grass Alpha IMmus Uranium 5.30 4100 42 Gross Beta B o0 Sample # Collected Type SO# Detects No 0 Not A 10 1-0401 041 06/93 RAC 06 2 C62 -00434 10115/99 MT 06 1 2 EPA 00H Parameter Measurement EPA DOH Parameter Measurement 4000 41 Gross Alpha (Minus Uraniuml L7 5.00 1040 20 Nitrate-N 1 90 4100 42 Gross Beta L7 5.00 046 -06753 EPA 081,12199 DOH NIT 06 Parameter 1 2 Measurement 1040 20 Nitrate•N 4.200 062 -00241 EPA 06/14199 DOH NIT 06 Parameter 1 2 Measurement 1040 20 Nitrate•N 6100 062 -40087 03117199 NIT 06 1 2 EPA DOH Parameter Measurement 1040 20 Nitrate -N 5.900 046 -03305 07101197 i0G 06 8 20 15 EPA DOH Parameter Measurement 1915 15 Hardness 2171 1064 16 Conductrvitp 542.0 0100 17 Turgidity 0.300 1905 18 Color LT 5.000 1025 19 Fiuonde NO 1040 20 Nittate•N 4.800 1055 22 Sulfate 56.30 x057 26 TOS•Tolal Dissolved Solids NO 046 -04088 09130196 NIT 06 1 2 062 -00569 08130/94 NIT 06 2 062 -00345 05125194 NIT 06 1 062 -00122 02116; 94 NIT 06 1 III ~!/ r, 'A, L (J �.J'� LLB 7 711 -L } rlr- r� Cantor For Laboratory Scfences RJ Lee Group, Inc. 2715 81. Andrews Lp Suite C Pasco, WA 90301 (5M545Ag69 Nitrate - N LABORATORY REPORT City of Pasco RJ Lee Group Jab No.: WA060720050002 P.O. Box 293 Samples ftneelved: MUMS Pasco, WA 99301 Rapod Dare: 712112oD5 Atim Dean Caasinallr AnalysialPrep Dale Phone: (509) 545.3469 Client Prcjecl; WA Fax: (509) 545-345 Purchase Order No.: Analysls: skrooco 7/872005 Nitrate - N EPA 300.0 - WA m L 2E 0.03 WA060720050002-001 Non- Petoble Water MU 7!612005 Ntrate - N EPA 300.0 - WA mgfL 2e 0.43 WA060720060002 -002 Non- Potable Watef 01hom 716/2005 Nhala - N EPA 300.0 - WA m L 25 0.03 WA050720050002 -007 NoorPotable Water Hand Eel 716/2005 Nitrate - N EPA 300.0 - WA m aIL 22 0.03 WA0607200500024)04 Non - Potable wafer 00"d Sunset 71612005 N fate - N EPA 300.0 • wA 1 mofL 1 24 1 0,03 WA06072005WD2 -005 I Nar1- Potable Water All solid malricies feporled on a dry weight basis Meet; otherwise noted. Anslgst Oammenis: These resuNs aro subrn0 d pwsuanf to RJ Lee Oroup's curefd larms and conddbns of sate, includ/ng the company's standard warranty and Hultteibn W UaWity povWQw. No responsibHNy or b'ebtld y is assumed for Ne manner in which the nesurfs are used orAUarprnted. Unless notified in writing to refwn the semieW covered by this repoa. RJ Lee CkuW w1H store the samples tar a period of lhwf y (30) days before discard4iq. A shlpp v and handling fee will be assessed fir the return of any samples. Aulhodzed ME Mewf"Wo Request for Semices `h -.W C -1,dY Rj Lee Group, Inc. itt partrtersphip with Columbia Basitz College Located Al 2715 St Andrews Lp. Ste F Unrikinrg Wafer Sample OnlL_ _ Far = Use only _ ,,,,- ,„,,,,,.,,n.•n, Pasco, VVA 99301 Sample Purpose r, Information a Regulatory Flamplea,"M . Phone: (509) 545 -4989 System —]Do -__ __� — _ 1)5htppetfo nantl4WIierean Fax: (509) 544 -6010 rr�� 7 DOH Source 4 Y} Temp udrrq iteSelpl Contact 3' 3 _6�_ Multiple Source's #'S _ s)ACeepfahkr`r ut3OW area NameV r-� _ � Protect p: POO _- Quote# Group 1-ype n A n B n Other 4) pH OweWbf idress: 6 - r� OX .1 -7 g S 1.aGa19c11eSKad - —�. sue_.__,._-. - � ._ .- t Slate: zip' PreaervatlianrMatrixlContainer type Key 11�['�I1 �.__ _ m .. _ __.._ -- -- Presetvallon Key: W"" '" Canlelner Key' Fax: 1 E -mall Unpres H2SG4 astewatrr sw�urrar are" P:plas1w 3 m�ller(5l Slgnalure ,_ -- '.__., 4 -. __ - 4'C HCI �x r DW�nnk1,Igwalel Glass - - - - - I -IN03 NaOH S =saivs;vdge O =ON )port Oellvery Instructions: F -mail Results? YES f NO fax Results? YES ! NO 01her N950 E= Pxrract X =Queer rrn u aluest: Arond Re Stannard: PrirrrltySGusnie55 day5}.� ^ o, Analysts Requasted CL- - - - emmontslinsiructions: c ~ h- c R C C1. Ci u3 � r9 d 4. Cient Sample Identification CLS'Sehlple ID Sample Sample a U 4t .. Data Time a- r �, �11aa Dale. �{ �+- -- by (Sampler! Time Recetued B If F.SGI Y By Date: Time Received By. By Dale �A —f Time: F eCtIVed By (CLS).. Date. Time_ Date. ^- Time APPENDIX B APPENDIX B 2007 RESIDENTIAL WATER USE MEMORANDUM Appendix B contains a memorandum completed in 2007 to study residential water use patterns and trends. The memorandum is attached on the following pages. 13- 1444.407 B -1 Irrigation System Master Plan December 2013 Appendix B: 2007 Residential Water Use Memorandum City of Pasco k:Ftaepmjeelsl13\I444 - pasco water resources studyW07 plan prepm6cn\inigatiun system master planlappendicwzppendix h - 2007 residential water use mancmndum.docx MEMORANDUM CH2MHILL Residential Water Use Study TO: Bob Alberts, Public Works Director FROM: Tony Krutsch, Project Manager CH2MHILL DATE: August 3, 2007 INTRODUCTION This Residential Water Use Study looks at residential water consumption at various locations throughout the City of Pasco. Approximately 360 residential housing units were included in the study representing 16 neighborhoods. Neighborhoods were seIected to represent a cross section of older and newer construction, with both separate irrigation systems, and those lots dependent on the City domestic water system as the source of supply for irrigation. This study represents an update of a Water Usage Study prepared by the City of Pasco in September 2001. In various locations throughout this technical memorandum, information from September 2001 Water Usage Study is quoted. Water records for each residential lot selected for this study were obtained from the City of Pasco Finance Department for the period of January 2005 through June 2007. After the water records were obtained and entered into a spreadsheet, the records were purged to remove inconsistent data that could have affected the analysis and evaluation. Unlike the September 2001 Water Usage Study, this evaluation is primarily based on the residential lot rather than population. CITY WATER USAGE Chart 1 identifies the average daily residential lot water usage for the 2 -year evaluation period for all neighborhoods included in this evaluation. PASCO WATER USE STUDYIKEN COPYRIGHT 2013 BY CH29 HILL, INC. • COMPANY CONRDENTIAL RESIDENTIAL WATER USE STUDY Chart 1. Residential Lot Water Usage - gallons per day Water Usage- Entire City 1000 900 c 800 }, 700 600 I CL 500 Serles1 400 0 300 X56 200 100 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec months The winter average daily residential lot water usage varies between older and newer neighborhoods. In older neighborhoods, winter usage averaged 237 gpd while in newer neighborhoods, winter usage averaged 155 gpd (average of 206 gpd for both older and newer neighborhoods). For those neighborhoods using the City domestic water system for residential lot irrigation, average daily domestic water usage was calculated at 883 gpd per unit, and the summer average daily water usage was calculated at 1,473 gpd per unit. The older Desert Plateau neighborhood had the highest summer average daily water usage at 2,939 gpd per unit.. Older neighborhoods in central and east Pasco averaged 1,107 gpd per unit for the summer monthly period. Chart 2 identifies each of the 16 neighborhoods included in this evaluation and the average usage of City domestic water by neighborhood in ac -ft /month during the winter (Dec -Feb) and summer (June - Sept) periods. Chart 2. Seasonal Lot Water Usage - Acre -feet Average Seasonal Usage per Winter vs Summer (Acre-feet/month) o.s000 - 0,2500 - 0.2000 n o 0.1500 -. 0.1040 _ 0.0500 O ; 0.0000 7 0 G O rt. F C9 i' % Unit KENA -10-08 DEMAND STUDY TECH MEMO.DOC COPYRIGHT 2013 BY CH2M HILL, INC. - COMPANY CONFIDENTIAL RESIDENTIAL WATER USE STUDY Chart 3 identifies each of the 16 neighborhoods and the total annual average usage of City domestic water by neighborhood in ac -ft /year. Chart 3. Annual Lot Water Usage - Acre -feet The average monthly domestic water consumption for all lots in the City was calculated at 0.0412 acre -ft per month and 0.4880 acre -ft per year. For those neighborhoods utilizing a separate irrigation system for irrigation, the average monthly domestic water consumption was calculated at 0.0191 acre -ft per month and 0.2249 acre -ft per year. In neighborhoods relying on the City domestic water supply system for irrigation, the average monthly domestic water consumption was calculated at 0.0729 acre -feet per month and 0.8264 acre - feet per year. The older Desert Plateau neighborhood has the highest monthly average and annual average usage of domestic water at 01540 acre -feet per month, and 1.7836 acre -feet per year respectfully. The central and east Pasco neighborhoods, which rely on the City domestic water supply system for irrigation had a monthly average domestic water consumption of 0.0644 acre -feet per month, and an annual water consumption of 0.7229 acre -feet per year. KENP -10-08 DEMAND STUDY TECH MEMO,DOC 3 COPYRIGHT 2013 BY CH2M HILL, INC. - COMPANY CONFIDENTIAL RESIDENTIAL WATER USE STUDY Chart 4 provides a comparison of the 16 neighborhoods in terms of winter versus summer usage shown in gallons per day per unit. Chart 4. Seasonal Lot Water Usage - gallons per day Chart 5 identifies the average daily water usage in terms of gallons per day per unit of the 16 neighborhoods for the entire City (1), those neighborhoods served by a separate irrigation system (2), and those neighborhoods relying on the City domestic water supply system for irrigation (3). Chart 5. Annual Lot Water Usage for Entire City - gallons per day 1500 1400 1200 gallons per 1000 day /unit 800 600 400 200 C Water Usage- Annual 2 3 1- Entire City, 2 -W separate irrig, 3 -Wi City irrig S2 S2- summer, i1 S1- winter KEW 10 -08 DEMAND STUDY TECH MEMO.DOC 4 COPYRIGHT 2013 BY CH2M HILL, INC. • COMPANY CONFIDENTIAL RESIDENTIAL WATER OSL STUDY Chart 6 looks at the average daily water usage in terms of gallons per day per unit of all the older neighborhoods evaluated in this report (1), those older neighborhoods served by a separate irrigation system (2), and those older neighborhoods relying on the City domestic water supply system for irrigation (3). Chart 6. Annual Lot Water Usage for Older Neighborhoods R gallons per day Water Usage-Old Neighborhoods - Annual 1600 1400 1200 gallons per 1000 800 daylunit 600 440 i 200 S2 0 S2- summer, 1 2 S1- winter 3 1 -Entire City, 2 -W separate irrig, 3 -W City irrig Chart 7 looks at the average daily water usage in terms of gallons per day per unit of all the new neighborhoods evaluated in this report (1), those new neighborhoods served by a separate irrigation system (2), and those new neighborhoods relying on the City domestic water supply system for irrigation (3). Chart 7. Annual Lot Water Usage for New Neighborhoods - gallons per day Water Usage -New Neighborhoods- Annual 1000 800 gallons per 600 day/unit 400 200 0 � 2 S2- sumer, 1 51 S2 m - - S1- winter 3 1- Entire City, 2 -W separate irrig, 3 -W City irrig KENU -1409 DEMAND STUDY TECH MEMO.DOC 5 COPYRIGHT 2013 BY CH2M HILL. INC. • COMPANY CONFIDENTIAL RESIDENTIAL WATER USE STUDY The September 2001 Water Usage Study evaluated 10 houses in 8 neighborhoods (total of 80 homes) throughout the City of Pasco. Chart 8 lists the 8 neighborhoods from the September 2001 report, and also identifies the results from this Residential Water Use Study separated into the same 8 neighborhoods. Chart 8. Average Daily Water Usage - gallons per day Neighborhood September 2001 Study Residential Use Study Sun Willows 601 gpd 771 gpd Ivy Glades 157 gpd 182 gpd Wilson 246 gpd 241 gpd Core City 570 gpd 669 gpd West Pasco 236 gpd 221 gpd I. Estate /S. Meadow 143 gpd 157 gpd Desert Plateau -1 934 gpd 1,651 gpd Desert Plateau - 2 - - -- 285 gpd East Pasco 823 gpd 712 gpd As Chart 8 points out, there are some differences between the two studies. These differences are likely the results of selecting more residential units in each neighborhood in this Residential Water Use Study, and the use of different residents within each neighborhood in each evaluation. Desert Plateau is shown with 2 listings in Chart 8. Desert Plateau -1 is an older neighborhood which utilizes the City domestic water supply system for irrigation water, while Desert Plateau - 2 is a newer neighborhood with smaller lot size and fewer records available for analysis. One of the calculations presented in the September 2001 report was the estimated percentage of City water used indoors vs. outdoors for those neighborhoods where no separate irrigation supply system was available. Chart 9 compares the results of this Residential Water Use Study with the September 2001 report. Chart 9. City Water Use - Indoor and Outdoor (gallon/year) Neighborhood Avg Mo Use- Winter Total Avg based on Winter Total Actual Use % Indoors This Study (Sept 2001) % Outdoors This Study (Sept 2001) Desert Plateau -1 6,525 78,295 581,146 13.5 ° /0 (27 %) 86.5%(73%) Sun Willows 3,482 41,786 257,657 16.2%(23%) 83.8%(77%) Core City 9,073 108,878 232,943 46,7%(39%) 533% (61 %) East Pasco 8,320 99,839 238,160 42.0%(45%) 58.0%(55%) Average 10,038 82,200 327,477 29.6% (33 %} 70.4% (67 %) KENfT-10-OB DEMAND STUDY TECH MEMO.DOC COPYRIGHT 2013 BY CH2M HILL, INC. • COMPANY CONFIDENTIAL RESIDENTIAL WATER USE STUDY Chart 10 provides a comparison of the outdoor water usage from the September 2001 report and this Residential Water Use ,Study for those neighborhoods relying on the City domestic water supply system for irrigation supply. The average square feet of each lot irrigated is from the September 2001 report. Chart 10. Average Annual Gallons per square foot and acre -feet Neighborhood Gross Avg Total Gallons Density Gross Acre- Acre -ft per Lot Size' Lawn Outdoor per sq -ft of ft per yearn year per (sq ft) Size' Water This Homes This Study lawn area 3 (sq ft) (gallons) Study per (Sept 01) (Sept 01) gross acre' Desert Plateau -1 10,390 8,100 502,851 62 (29) 3.5 5.39 (2.52) 8.30 Sun Willows 6,420 4,900 215,872 44 (31) 4.8 3.18 (2.24) 5.89 Core City 6,820 5,200 124,064 24 (20) 4.9 1.88(l.55) 3.63 East Pasco 6,970 5,400 138,321 26 (27) 4.8 2.07 (2.17) 3.42 Average 7,650 5,900 245,276 39 (26) 4.5 3,18 (2.12) 5.31 'From September 2001 Water Usage Study 2 Average sq -ft of lawn times number of homes per acre divided by 43,560 sq-ft, then multiplied by gallons per sq -ft, divided by 7,48 3 Total Outdoor Water usage divided by Avg Lawn Size, divided by 7.48 The September 2001 Wafer Usage Study noted that the Franklin Conservation District estimated that home lawns accounted for 37.7 inches (3.08 ac -ft or 23 gallons per sq -ft) of water annually. With an anticipated loss of up to 20 %, the application rate per lawn area would increase to 3.7 ac -ft or 27.7 gallons per sq -ft. In both the Desert Plateau -1 and Sun Willows neighborhoods, irrigation application rates are much higher than those anticipated by the Franklin Conservation District. The average application rate for irrigated lot area for the entire City of 5.31 ac -ft exceeds the anticipated application rate of 3.7 ac -ft (including losses) by approximately 44 %. WATER USE STUDY FINDINGS The following represents findings of this Residential Wafer Use Study and the evaluation of water consumption throughout the City of Pasco. 1. Residential Indoor Water Usage. In the older residential neighborhoods, daily domestic indoor water usage averaged 237 gallons per day (annual usage of 0.2655 acre -feet per year). For the new residential neighborhoods, daily domestic indoor water usage averaged 155 gallons per day (annual usage of 0.1736 acre -feet per year), or 53% less than older neighborhoods. For KENF7-10-08 DEMAND STUDY TECH MEMO.DCC COPYRIGHT 2013 BY CH2M HILL, lNC. � COMPANY CONFIDENTIAL RESIDENTIAL WATER USE STUDY the new residential neighborhoods, it is highly likely that the plumbing fixtures and devices used have an improved efficiency over those in older neighborhoods. 2. Residential Outdoor Water Usage. For the 16 neighborhoods evaluated in this Residential Water Use Study, the volume of water consumed for domestic purposes was calculated at less than 50% of the total volume consumed for domestic plus irrigation. At the seven neighborhoods, utilizing the domestic water supply system for irrigation, the volume of water consumed for domestic purposes was calculated at about 30% of the total volume consumed for domestic plus irrigation (Over twice as much water was consumed by irrigation of a lot than was used for domestic purposes by each residential unit). In older residential areas (central and east Pasco), irrigation of the landscaped area of each lot was similar to that anticipated by the Franklin Conservation District (3.7 acre -ft per year) at 3.63 acre -ft per year (central) and 3.42 acre -ft per year (east) respectively. The central and east Pasco area residential units are of older construction, landscaping is considered to be mature and well established, and residents are generally considered to have moderate incomes. In newer residential areas (Sun Willows and Desert Plateau), irrigation of the landscaped area of each lot far exceeded the Franklin Conservation District anticipated average of 3.7 acre -ft per year. The Sun Willows neighborhood consists of relatively small landscaped areas (Average of 4,900 square feet) in a newly developed area. Residents are generally considered to have higher incomes. Irrigation application rates in the Sun Willows neighborhood were calculated at 5.89 acre -feet per year or nearly 60% greater than the Franklin Conservation District anticipated average. The Desert Plateau neighborhood evaluated for this study consists of residents with above average lot size, where income levels are generally considered to be high. Landscaping is generally 3 to 5 years old and irrigation application rates were calculated at 8.30 acre -feet per year. This application rate is 124% greater than the Franklin Conservation District anticipated average (3.7 acre -feet per year). Even if the actual irrigated area of lots within this Desert Plateau neighborhood were larger (by 25% to 10,000 square feet) than the average (8,100 square feet) calculated in the September 2001 Water Usage Study for Desert Plateau, the irrigation application rate to landscaped areas would be 6.72 acre -feet per acre or over 80% greater than the Franklin Conservation District anticipated average. APPLICATION TO WATER SYSTEM PLAN Based on this evaluation, the update of the City of Pasco Water System Plan will utilize the residential water consumption figures shown in Chart 11 for the projection of future domestic and irrigation supply demands for the existing and future residential neighborhoods throughout the Pasco Urban Growth Boundary. KENO -10-08 DEMAND STUDY TECH MEMO.DOC COPYRGHT 2013 BY CH21V HILL, INC. • COMPANY CONFIDENTIAL RESIDENTIAL WATER USE STUDY Chart 11. Water Usage in Residential Areas - acre -feet per year per unit Residential Area With Separate With Domestic Separate Irrigation Irrigation System Water Irrigation Demand gross acre (acre- ft/year /unit) (acre - ft/year /unit) (acre- ft/year /unit) OId Neighborhood 0.2655 0.7229 0.5031 New Neighborhood 0.1736 0.9644 0.8699 Chart 12 identifies the average day domestic and average day irrigation demand per unit, and per gross acre of residential neighborhoods in terms of gallons per day. Chart 12. Per Unit Water Usage Residential Area With Separate Irrigation System (gpd) With Domestic Water Irrigation (gpd) Separate Irrigation Demand (gpd) unit gross acre unit gross acre unit gross acre Old Neighborhood 240 660 750 3.5 units /acre 840 2,540 3,160 4.0 units /acre 960 2,900 3,300 4.5 units /acre 11080 2,970 3,380 5.0 units /acre 1,200 3,130 3,560 New Neighborhood 160 1,500 2,250 3.5 units /acre 560 6,300 9,450 4.0 units/ acre 640 6,000 9,000 4.5 units /acre 720 6,410 9,610 5.0 units / acre 800 6,750 10,120 KENT/ -10-08 DEMAND STUDY TECH MEMO.DOC COPYRIGHT 2013 BY CH21V HILL INC. - COMPANY CONFIDENTIAL APPENDIX C APPENDIX C OPERATING AGREEMENTS Appendix C contains operating agreements that the City has with Kidwell Farms, Inc. These agreements include the use of the Northwest Commons well and annual contracts for irrigation water use at pivot sites. The agreements are attached on the following pages. 13- 1444.407 C -1 Irrigation System Master Plan December 2013 Appendix C: Operating Agreements City of Pasco kAtac pmjects1131k444 - pasco water resources studyA07 plan prepztmtion\mgation system master piantappendic&appendix c - operating agreemcros.docx RECEIVED JUL 3 0 2008 ?�&JeWORKS AD1 1N- FILED FOR RECORD AT REQUEST OF: Zan& G. LenhaM Auditor. Franklin county. WA, City of Pasco, Washington AFN P 1722639 Recorded 0713012008 at 02:31 P OocType: ASGN a Pagelsj Filing Instrument 346, WHEN RECORDED RETURN TO: Recorded at the request of: PASCO CITY OF City of Pasco, Washington 525 North 3rd Pasco WA 99301 ASSIGNMENT OF WELL EASEMENT (Including Well System) BY THIS ASSIGNMENT effective this 2_ day of L 2008, Farm 2005, LLC, a Washington Limited Liability Company, hereinafter referred to as "Assignor ", does by these presents, assign to the City of Pasco, Washington, a Municipal Corporation, hereinafter referred to as "Assignee ", all of its right, title and interest as co- owner, to that certain easement and water well system described below according to the following terms and conditions. WHEREAS, that easement document which is the subject matter of this assignment, was entered into with Glacier Park Company, a Delaware Corporation, as Grantor therein, and Alford Farms, Inc., a Washington Corporation as Grantee therein, on December 20, 1989, designated as Easement Deed No. G -89 -3566, and recorded as Franklin County Auditor's No. 548122 ( "Easement "); and WHEREAS, such easement was assigned by the original Grantee to Kenneth G. Smith by Assignment of Easement dated November 25, 1997, and recorded December 23, 1997, in Franklin County, Washington, as Auditor's File No. 548122. Such easement was further assigned by Assignment of Easement dated November 30, 2007, between Kenneth G. Smith as Assignor to Pasco School District No. 1, a Washington Municipal Corporation, and Farm 2005, LLC, a Washington Limited Liability Company, as Franklin County Auditor's No. 171 1948, as co- owners each having an undivided one -half interest therein, and WHEREAS, Farm 2005, LLC, and Pasco School District No. 1 have entered into a Water Well System Shared Use Agreement dated October 22, 2007, thereby establishing their respective interest and responsibilities regarding the water well related water pumping and piping infrastructure located upon and Assignment of Well Easement - I within the easement, this Agreement is assignable by their respective parties with their successors in interest being bound by the terms thereof; and WHEREAS, Farm 2005, LLC, desires to convey all of its right, title and interest in the easement and water well and related water pumping and piping infrastructure located thereon, and including all of its rights and responsibilities under the Water Well System Shared Use Agreement; NOW, THERFORE, IN CONSIDERATION OF MUTUAL COVENANTS CONTAINED HEREIN, and as a donation for public purposes, receipt of which is hereby acknowledged, the Parties agree as follows: I. Assignment of Easement. Assignor does hereby assign to Assignee all its right, title and interest in that easement designated as Easement Deed No. G -89 -3566 dated December 20, 1989, for underground water line, overhead power line, and water well use, upon and over the surface of real property located in the: Southeast Quarter or the Southeast Quarter of the Southeast Quarter of Section 3, Township 9 North, Range 29 East, Willamette Meridian, Franklin County, Washington, more particularly described designated by diagram on the attached Exhibit A. Included in such Assignment are all fixtures located upon such premises consisting of the existing well system including pumps, panels, casings and piping infrastructure constituting the existing well system, including but not limited to: I- GE 150 hp, Serial # OVJ210003 I- Layne Pump, # W2004033 1 - Service Disconnect Allen- Bradley # 99454 with PUD Meter # 25879 Assignor warrants that it has the right to transfer its interest in the above - described equipment and further agrees to warrant and defend the transfer, assignment, conveyance, grant, and delivery of the well system and above - described equipment made hereby against all persons whomsoever, to take all steps reasonably necessary to establish the record of Assignor's title and at the request of the Assignee, to execute and deliver further instruments of transfer and assignment and take any other action Assignee may reasonably request to more effectively transfer and assign to and vest in Assignee each and every component of the well system, at the sole cost and expense of the Assignor. Assignment of Well Easement - 2 2. Assumption of Water Well System Shared Use Agreement. Assignee hereby accepts the assignment of well easement including the fixtures and components of the water well system described above, and Assignor's interest in the Water Well System Shared Use Agreement dated October 22, 2007, and agrees to be bound by and abide by each and every term and condition of said easement and Water Well System Shared Use Agreement, and hereby expressly assumes all obligations of the original Grantee thereunder except those liabilities arising; out of acts or omissions occurring prior to the execution of this Agreement. 3. Reservation. This easement is subject to reservation reserved in the Grantor, Glacier Park Company, in the event that such premises shall cease to be used for underground waterlines, overhead power lines, and water well purposes for a period of twelve (12) months, 4. General Provisions. For the purpose of this Agreement, time is of the essence. In the event a dispute arises concerning the breach, enforcement or interpretation of this Agreement, the parties shall meet in a good faith attempt to resolve the dispute. In the event the dispute is not resolved either by agreement of the parties, or by voluntary mediation, the dispute shall be resolved by arbitration pursuant to RCW 7.04A, the Mandatory Arbitration Rules (MAR). Venue shall be placed in Franklin County, Washington, and the prevailing party shall be awarded its attorney fees and costs against the outer. DATED this -C [ day of :�. ` 4 2008. ASSIGNOR Farm 2005, ,LLC a`L Cheryl . Berg, LLC Men#ler Assignment of Well Easement - 3 STATE OF WASHINGTON ) ss County of Franklin On this day personally appeared before me CHERYL L. BERG, Member of Farm 2005, LLC, described in and who executed the within and foregoing instrument, and acknowledged that she signed the same as her free and voluntary act and deed for the uses and purposes therein mentioned. t tt�a� \,\46Yf hand and ffici al this'2 dal of '�U 2008. o'�;� �01ARY Notary Public in an fort State of Washington Residing at o _ pU610G My Commission Expires 2L t. Po _ Ar STATE' TON ) sS County of Franklin ) On this day personally appeared before me GARY CRUTCHFIELD, City Manager of the City of Pasco, Washington, described in and who executed the within and foregoing instrument, and acknowledged that he signets the same as his free and voluntary act and deed for the uses and purposes therein mentioned. GIVEN under my hand and offiej aI seal this -0& of If Q. 9 AOTARY PU4 ■ Assignment of Well Easement - 4 Notary Public =andfor Residing at __ My Commission Expires Washington 2008. PUBLIC WORKS / ENGINEERING DIVISION 509 -545 -3444 / FAX 509 -543 P.O. BOX 293,525 NORTH THIRD AVENUE, PASCO, WASHINGTON 99.301 Tom Kidwell Water, Inc. 2420 W. Court Pasco, WA 99301 RE: Pump Station Agreement Dear Mr. Kidwell: February 14, 2012 p FE6 2 killED AIR u4 The city purchased from Water, Inc., all its facilities including the pump station situated on the FCID can: within Section 16. The purchase agreement provided that the parties would provide, by separate agreemen for your potential use of the pump station for irrigation of certain agricultural lands owned by you at th time. Since that agreement, however, you have sold those certain properties; consequently, the city is ni obligated by the purchase agreement to provide for your use of the pump station for other lands. The city understands, however, your desire to use the pump station to irrigate the agricultural lands yc presently lease from the Washington State Department of Natural Resources (DNR). Based on our rece discussions, the city will permit your use of the pump station in strict accord with the following stipulatior In exchange for the city's permission to use the pump station for the 2012 growing season, you shall: 1. be responsible for all electrical costs associated with pump station; 2. be responsible (to the city's satisfaction) for all maintenance and repair costs associated with the r of the pump station during the growing season; 3. pay $2,500 for the seasonal use with payment due not later than April 30, 2012; 4, provide evidence of liability insurance of at least $100,000 and naming the city as an addition insured; 5. indemnify and hold the city harmless from any claims whatsoever associated with use of the pu- station; 6, be responsible for all costs whatsoever to acquire water from the FC1D canal; 7, assure that use of water transferred through the pump station sball be restricted to those lands wit Section 16 which you have legal authority to use, 8, no chemicals shall be sprayed in any form on the pump and control systems; 9. no chemicals are to be used in or with the irrigation system. 10. pay City $1001year lease for pump equipment. The applicant is responsible for relocation, electr costs and maintenance of equipment pump. Your signature hereunder will reflect your agreement with the foregoing provisions. Sincerely 5ALhmad Qayoumi Public Works Director Agreed to: � Tom Kidwell Date f ^ i PUBLIC WORKS /ENGINEERING DIVISION 509 - 545 -3444 / FAX 509 -54? P.O. BOX 293, 525 NORTH THIRD AVENUE, PASCO, WASHINGTON 99301 Tom Kidwell Water, Inc. 2420 W. Court Pasco, WA 99301 RE: Well Agreement Dear Mr. Kidwell: Fury 14, 2012 2 � cl- - co �1- The City of Pasco acquired from the Northwest Commons subdivision, as part of the preliminary ph requirements, the water rights and well in 2006. The preliminary plat requirements provided that th owner /developer could negotiate a separate agreement with the City if they wish to continue to utilis water from the well for irrigation of agricultural lands. The City understands your desire to use the well to irrigate the agricultural lands you presently lease the subdivision site. The City will permit your use of the well in strict accord with the followir stipulations. In exchange for the city's permission to use the well for the 2012 growing season, yc shall: I . adhere to the City's operation instructions; 2. be responsible for all electrical costs associated with farm irrigation; 3. be responsible (to the city's satisfaction) for all damage, maintenance and repair costs associate with the use of the well during the growing season; 4. pay S 1,500 for the seasonal use with payment due no later than April 30, 2012; S. provide evidence of liability insurance of at least $100,000 and naming the City as an addition insured; 6. indemnify and hold the City harmless from any claims whatsoever associated with use of the well; 7. assure that use of water shall be restricted to those lands within the subdivision of Northwest Commons; $. no chemicals shall be sprayed in any form on the pump and control systems; 9. no chemicals are to be used in or with the irrigation system. Your signature hereunder will reflect your agreement with the foregoing provisions. AQ /jv Agreed to: Tom Kidwell Sincerely, Ahmad Qayoumi Public Works Director Date Ct ?Y OF FAS! lC++ff O �g14����I�II�I�I�I�Il�ililll�l�lifll ;� Tom Kidwell Water, Inc. 2420 W, Court Pasco, WA 99301 PUBLIC WORKS/ ENGINEERING DIVISION 509- 545 -3444 /FAX 509.54: P.O. BOX 293,525 NORTH THIRD AVENUE, PASCO, WASHINGTON 993UI FOW 14,2012 PUS, FEB 2 ` 2012 RE: Well Agreement at Linda Loviisa Subdivision Dear Mr. Kidwell: The City understands your desire to use the well to irrigate the agricultural lands you presently lease; the Linda Loviisa subdivision site. The City will permit your use of the well in strict accord with tl following stipulations. In exchange for the city's permission to use the well for the 2012 growir Season, you shall: 1. Connect your system at a location approved by the City and provide a meter and valving as deemed necessary by the City. 2. adhere to the City's operation instructions; 3, be responsible for all electrical costs associated with farm irrigation; 4, be responsible (to the city's satisfaction) for all damage, maintenance and repair costs associate with the use of the well during the growing season; 5. pay $2,500 for the seasonal use with payment due no later than April 30, 2012; b. provide evidence of liability insurance of at least $100,000 and naming the City as an addition insured; 7, indemnify and hold the City harmless from any claims whatsoever associated with use of the well; 8. assure that use of water shall be restricted to those lands within the subdivision of; 9. no chemicals shall be sprayed in any form on the pump and control systems; 10, no chemicals are to he used in or with the irrigation system. Your signature hereunder will reflect your agreement with the foregoing provisions. Sincerely, Ahmad Qayoumi Public Works Director AQ /jv Agreed to-, C;1-1 L Tom Kidwell Date 40-- PUBLIC WORKS/ ENGINEERING DIVISION 509 -545 -3444 /FAX 509 -53 P.O. BOX 293, 525 :NORTH THIRD A-6MMUE. PASCO, WASMNGTON 99301 April 2, 2010 Tom Kidwell Water, Inc. 2420 W. Court Pasco, WA 99301 RE: Well Agreement at I.'vrda Loviise Subdivision Dear Mr. Kidwell: The City understands your desire to use the well to irrigate the agricultural lands you presently less the Linda Loviisa subdivision site. The City will permit your use of the well in strict accord with following stipulations. In exchange for the city's permission to use the well for the 2010 grov season, you shall: 1. Connect your system at a location approved by the City and provide a meter and valuing as deemed necessary by the City. 2. adhere to the City's operation instructions; 3. be responsible for all ekstrical costs associated with farm irrigation; 4. be responsible (to the city's satisfiction) for all damage, maintenance and repair casts associ with the use of the well during the growing season; 5. pay 52,500 for the seasonal use with payment due no later than April 30, 2010; b. provide evidence of liability insurance of at least $100,000 and naming the City as an additi- insured; 7. indemnify and hold the City harmless from any claims whatsoever associated with use of th well; 8. assure that use of water shall be restricted to those lands within the subdivision of; 9. no chemicals shall be sprayed in any form on the pump and control systems. Your signature hereunder will reflect your agreement with the foregoing provisions. Sincerely, &4C6--- Bob Alberts Public Works Director RAf V Agreed to: Tom Kidwell Date PUBLIC WORKS / ENGINEERING DMSION 509 - 545.3444 / FAX 509 -54. P.O. BOX 293,525 NORTH THIRD AVENUt:, PASCO, WASHINGTON 49301 March 31, 2010 Tom Kidwell Water, Inc. 2420 W. Court Pasco, WA 99301 RE: Well Agreement Dear Mr. Kidwell: The City of Pasco acquired from the Northwest Commons subdivision, as part of the preliminary pl requirements, the water rights and well in 2006. The preliminary plat requirements provided that d owneddeveloper could negotiate a separate agm rent with the City if they wish to continue to utili: water from the well for irrigation of agricultural lands. The City understands your desire to use the well to irrigate the agricultural lands you presently lease the subdivision site. The City will permit your use of the well in strict accord with the followi stipulations. In exchange for the city's permission to use the well for the 2010 growing season, y shall: 1. adhere to the City's operation instructions; 2. be responsible for all elocnical costs associated with farm irrigation; 3. be responsible (to the city's satisfaction) for all damage, maintenance and repair costs associai with the use of the well during the growing season; 4. pay 51,500 for the seasonal use with payment due no later than April 30,2010; 5. provide evidence of liability insurance of at least 5100,000 and naming the City as an additiot insured; 6. indemnify and hold the City halmicss from any claims whatsoever associated with use of the well; 7. assure that use of water shall be restricted to those lands within the subdivision of Northwest Commons; 8. no chemicals shall be sprayed in any form on the pump and control systems. Your signature hereunder will reflect your agreement with the foregoing provisions. Sincerely, Ao&--d— Bob Alberts Public Works Director BACv Agn:ed to: Tom Kidwell Date I, BLI( W ORKS, DEP.-XR I'MVIN'I (509) 543-5738, FAX i509)_543-5737 1' f Bit -, 21y' 1 SI -th i1, 111ti l P'L' 4'. `k'1"11111,21 "11 9,430 1 March 19, 2013 Tom Kidwell Water, Inc. 2420 W. Court Pasco, WA 99301 RF: Well Agreement Dear Mr. Kidwell: The City of Pasco acquired from the Northwest Commons subdivision, as part of the preliminary plat requirements, the water rights and well in 2006. The preliminary plat requirements provided that the ownerldeveloper could negotiate a separate agreement with the City if they wish to continue to utilize water from the well for irrigation of agricultural lands. The City understands your desire to use the well to irrigate the agricultural lands you presently lease at the subdivision site. The City will permit your use of the well in strict accord with the following stipulations. In exchange for the city's permission to use the well for the 2013 growing season, you shall: 1. pay for seasonal use $1,330 (which includes $151.34 applicable state leasehold taxes) by April 30, 2013; 2. be responsible for all electrical costs associated with farm irrigation; 3. be responsible (to the city's satisfaction) for all damage, maintenance and repair costs associated with the use of the well during the growing season; 4. adhere to the City's operation instructions: 5, provide evidence of liability insurance of at least $100,000 and naming the City as an additional insured; 6. indemnify and hold the City harmless from any claims whatsoever associated with use of the well; 7. assure that use of water shall be restricted to those lands within the subdivision of Northwest Commons; 8. no chemicals shall be, sprayed in any form on the pump and control systems; 9. no chemicals are to be used in or with the irrigation system; 10. maintain and test RP; 11. if chemical is used it must he preapproved by the City. Your signature hereunder will reflect your agreement with the foregoing provisions. Sincerely, _ Ahmad Qayoumi Public Works Director AQ /jv v Agreed to: 1 Tom Kidwell Date r P BLIC %' ORK-S DL• L'ALtTr1EN'I (509) 543 -5738 (509)'543-5737 iNclluclVa ", lkj% lal wli�71.�;tif March l9. 2013 Tom Kidwell Water, Inc. 2420 W. Court Pasco, WA 99301 RE: Well Agreement at Linda Loviisa Subdivision Dear Mr. Kidwell: "rhe City understands your desire to use the well to irrigate the agricultural lands you presently lease at the Linda Loviisa subdivision site. The City will permit your use of the well in strict accord with the following stipulations. In exchange for the city's permission to use the well for the 2013 growing season, you shall: 1. pay $2,215 for seasonal use (which includes 5252.04 of applicable state leasehold taxes) by April 30, 2013; 2. be responsible for all electrical costs associated with farm irrigation: 3. be responsible (to the city's satisfaction) for all damage, maintenance and repair costs associated with the use of the well during the growing season; 4. connect your system at a location approved by the City and provide a meter and valving as deemed necessary by the City. 5. adhere to the City's operation instructions: 6. provide evidence of liability insurance of at least $100,000 and naming the City as an additional insured; 7. indemnify and hold the City harmless from any claims whatsoever associated with use of the well; 8. assure that use of water shall be restricted to those lands within the subdivision of; 9. no chemicals shall be sprayed in any form on the pump and control systems; Your signature hereunder will reflect your agreement with the foregoing provisions. Sincerely, Ahmad Qayoumi Public Works Director ti AQ /3v _ Agreed to: Torn Kidwell Date !'1�61.lc t��lta� ulk:Y.a�z r�tt�l� r c�u�,),a� -573tI r �.�� ttitly) S�I.i -737 40-1 js t 1 i�E�`. �'7' ���` �.i Ali S: ' �.tiElut•h s'.i•.i G� s,hmyt- �n ` Y3t,l March 19, 2013 Tom Kidwell Water, Inc. 2420 W. Court Pasco. WA 99301 RE: Pump Station Agreement Dear Mr. Kidwell: The city purchased from Water, Inc., all its facilities including the purnp station situated on the hC1D canal within Section 16. The purchase agreement provided that the parties would provide, by separate agreement, for your potential use of the pump station for irrigation of certain agricultural lands owned by you at that time. Since that agreement, however, you have sold those certain properties, consequently, the city is not obligated by the purchase agreement to provide for your use of the pump station for other lands. The city understands, however, your desire to use the pump station to irrigate the agricultural lands you presently lease from the Washington State Department of Natural Resources (DNR). Based on our recent discussions, the city will permit your use of the pump station in strict accord with the following stipulations. In exchange for the city's permission to use the putnp station for the 2013 growing season, you shall: 1. pay $2,215 for the seasonal use of the pump station and $90 /year lease for pump equipment (which includes $262.28 of applicable state icaseliold tax) by April 30, 2013. 2. be responsible for all electrical costs associated with pump station; 3. be responsible for relocation, electrical costs and maintenance of equipment pump. 4, he responsible (to the city's satisfaction) for all maintenance and repair costs associated with the use of the pump station during the growing season; 5, provide evidence of liability insurance of at least $100,000 and naming the city as an additional insured; 6. indemnify and hold the city harmless from any claims whatsoever associated with use of the pump station; 7- be responsible for all costs whatsoever to acquire water from the 1=CID canal. 8. assure that use of water transferred through the pump station shall be restricted to those lands within Section 16 which you have legal authority to use. Your signature hereunder will reflect your agreement with the foregoing provisions. Sincerely, Ahinad Qayoumi / �. Public Works Director Agreed to: Tom Kidwell Date 1'l B L] %NOR :S ll✓ VAR I M \ I (509) 513 -57314 r l,:s.A 0:+119) 543 -573" «.1.'»li t»,1 4i��t • -�a � r ' March 19. 2013 Tom Kidwell Water. Inc. 2420 W. Court Pasco, WA 99301 RE: Well Agreement at Rd 52 Dear Mr. Kidwell: The City understands your desire to use the well to irrigate the agricultural lands you presently lease at the Rd 52 site. The City will permit your use of the well in strict accord with the following stipulations. In exchange for the city's permission to use the well for the 2013 growing season, you shall: . pay $2.215 for seasonal use (which includes $252.04 of applicable state leasehold taxes) by April 30, 2013; 2. be responsible for all electrical costs associated with farm irrigation; 3, be responsible (to the city's satisfaction) for all damage, maintenance and repair costs associated with the use of the well during the growing season; 4. connect your system at a location approved by the City and provide a meter and valving as deemed necessary by the City. 5. adhere to the City's operation instructions; 6. provide evidence of liability insurance of at least $100,000 and naming the City as an additional insured, 7. indemnify and hold the City harmless from any claims whatsoever associated with use of the well: 8. assure that use of water shall be restricted to those lands within the subdivision of;_ 9. no chemicals shall be sprayed in any form on the pump and control systems; Your signature hereunder will reflect your agreement with the foregoing provisions. AQljv Agreed to: Tom Kidwell Sincerely, _ Ahmad Qayoumi �--- — ` Public Works Director t I - 19- � :� Date APPENDIX D APPENDIX D PROJECT COST ESTIMATES Appendix D contains detailed cost estimating data used to determine project costs as presented in Section 4. Irrigation Mains Irrigation main project cost estimating data was prepared using bid tabulations from nearby irrigation districts. Some of the City of fasco's recent bid tabulations were also used. The costs assume PVC irrigation pipe. Construction costs represented total estimated construction cost per linear foot (LF) of pipe and included sales tax. A 10 percent contingency was added to bid costs to calculate a construction subtotal. To calculate project costs, a 35 percent contingency was added to account for administrative, legal, and engineering costs. Table D -1 summarizes irrigation main project costs. Table D -1 Irrigation Main Project Cost Summary Pipe Diameter (inches) Project Cost per Linear Foot $/LF 4 65 6 75 8 105 10 115 12 125 16 135 18 145 20 150 24 170 Well Rehabilitation and Assessment The total project cost for well rehabilitation work is estimated at $225,500. Well rehabilitation costs are summarized in Table D -2 and are based on the following assumptions. • New pump and motor costs are not included • The City will conduct the specific capacity testing recommended at each well • The City will conduct well video surveys • Administrative, legal, and engineering costs for this project are estimated at 50 percent of the construction cost instead of 35 percent to account for additional on -site engineering representation associated with rehabilitation activities. Rehabilitation activities typically require more on -site representation than construction of new facilities. 13- 1444.407 D -1 Irrigation System Master Plan December 2013 Appendix D: Project Cost Estimates City of Pasco k 18Cyrojecis\l3V1444 - pasta water resources stodyV407 plan pnypaation\irrigation system master plWappcndice appendix d - pmject cost estanates.do" Table D -2 Well Rehabilitation and Assessment Project Cost Summary Description Quantity Unit Unit Price Total Desert Sunset, Sirocco, Northwest Commons, Island Estates, I -182, and Powerline Road Wells Mobilization and Demobilization 6 LS $1,500.00 $9,000.00 Disconnect, Remove, and Reinstall Existing Equipment 72 HR $350.00 $25,200.00 Specific capacity testing 12 HR $0.00 $0.00 Onsite Hourly Work to Perform Rehabilitation 96 HR $350.00 $33,600.00 Miscellaneous Equipment and Chemicals 6 LS $1,500.00 $9,000.00 Video Survey 12 EA $0.00 $0.00 Disinfection 6 EA $1,000.00 $6,000.00 Wastewater Containment and Disposal 6 EA $2,500.00 $15,000.00 Subtotal $97,800.00 First Place and Desert Estates Wells Mobilization and Demobilization 2 LS $1,500.00 $3,000.00 Disconnect, Remove, and Reinstall Existing Equipment 24 HR $350.00 $8,400.00 Specific Capacity Testing 4 HR $0.00 $0.00 Onsite Hourly Work to Perform Rehabilitation 16 HR $350.00 $5,600.00 Miscellaneous Equipment and Chemicals 2 LS $1,000.00 $2,000.00 Video Survey' 4 EA $0.00 $0.00 Disinfection 2 EA $1,000.00 $2,000.00 Wastewater Containment and Disposal 2 EA $2,500.00 $5,000.00 Subtotal 526,000.00 Road 52 and Linda Loviisa Wells Specific Capacity Testing' 4 HR $0.00 $0.00 Video Survey 2 EA $0.00 $0.00 Disinfection 2 EA $1,000.00 $2,000.00 Subtotal $2,000.00 Subtotal Construction Contingency (10 percent) Sales Tax (8.6 percent) Construction Subtotal Administrative, Legal, and Engineering Costs (50 percent 2) Rounded Estimated Project Cost Notes 1. Assumes City will conduct specific capacity testing and well video surveys. 2. Administrative, legal, and engineering costs are higher due to increased on -site engineering representation for rehabilitation activities. $125,800 $12,580 $11,900 $150,280 $75,140 $225,500 13- 1444.407 D -2 Irrigation System Master Plan December 2013 Appendix D: Project Cost Estimates City of Pasco k:ltac_pmjec1sM311444 - pasco water resuar c study1407 plan preparationVurgntion system r ter planlappendic at.ppendix d - pmjw cast estunates.docx Village of Pasco Heights Well Replacement The total project cost to replace the Village of Pasco Heights Well is estimated at $172,400. Itemized costs are summarized in Table D -3 and are based on the following assumptions: • The well pump and motor in use at the existing Village of Pasco Heights Well are in good condition and can be reused in the new well. • Costs for infrastructure expansion for connection to existing water system are not included • No permitting costs are included • No cost for a well video survey is included since the City can perform the survey The total cost includes: • Aquifer and well performance testing (e.g., step -rate and constant -rate pumping tests) • Plumbness and alignment testing • Water quality analysis • 100 feet of 10 -inch diameter PVC discharge piping to connect to the existing irrigation system General New Irrigation Well Construction A general -use project cost was developed for use in budgeting construction of a new irrigation water supply well. The total estimated project cost is $616,000. Itemized costs are summarized in Table D -4. This estimated project cost can be used on a per -well basis and is based on the following generalized assumptions: • The total depth of the new well is 200 feet • The diameter of the well is 16 inches • The length of the stainless steel screen is 20 feet • The pump is a vertical turbine type pump with a 150 -HP motor equipped with a variable -speed drive • 500 feet of 10 -inch diameter PVC discharge piping will be needed to cornett the well to the existing irrigation system • The City will perform well video surveys The total cost includes: • Aquifer and well performance testing (e.g., step -rate and constant -rate pumping tests) • Plumbness and alignment testing • Water quality analysis It is possible that individual well construction costs may vary from those presented here due to fluctuations factors such as depth, diameter, production rates, aquifer characteristics, and 13- 1444.407 D -3 Irrigation System Master Plan December 2013 Appendix D: Project Cost Estimates City of Pasco kAtac _pmjeers11311444 - panto water resourus study1407 plan prepmtion\irrigalien system maven planlappcndic Mappeadix d - project cost estinrates.docx hydraulic conditions. To take these variations into account, a contingency of 20 percent was used to estimate the construction cost of the well. The project cost included in Table D -4 is a representative cost used for budgeting purposes only. Table D -3 Village of Pasco Heights Well Replacement Project Cost Summary Description Quanti Unit Unit Price Total Mobilization and Demobilization 1 LS $10,000.00 $10,000.00 Site Preparation 1 LS $5,000.00 $5,000.00 Drilling 20 -inch Diameter Surface Seal 20 LF $240.00 $4,800.00 Fumish and Install 20 -inch Diameter Casing 20 LF $100.00 $2,000.00 16 -inch Diameter Drill Shoe I EA $1,000.00 $1,000.00 16 -inch Diameter Drilling 180 LF $120.00 $21,600.00 Furnish and Install 16 -inch Diameter Casing 200 LF $70.00 $14,000.00 Install Surface Seal 20 LF $40.00 $800.00 16 -inch Diameter Shoe Cut 1 EA $4,000.00 $4,000.00 Hourly Operations 8 HR $525.00 $4,200.00 Well Casing Alignent 1 EA $500.00 $500.00 16 -inch Diameter Telescoping Stainless Steel Screen 10 LF $200.00 $2,000.00 16 -inch Diameter Riser Pipe and Tail Pie 15 LF $70.00 $1,050.00 Silica Sand 40 BG $16.00 $640.00 Installation of Screen Assembly 16 HR $525.00 $8,400.00 Well Development 16 HR $325.00 $5,200.00 Remove existing pump and motor and Reinstall in New Well 180 LF $20.00 $3,600.00 Furnish and Install Discharge Piping 100 LF $85.00 $8,500.00 Operate Test Pump 30 HR $240.00 $7,200.00 Well Disinfection 1 LS $500.00 $500.00 Well Head Completion 1 LS $350.00 $350.00 Water Quality Analysis 1 LS $1,500.00 $1,500.00 Subtotal Construction Contingency (10 percent) Sales Tax (8.6 percent) Construction Subtotal Administrative, Legal, and Engineering Costs (35 percent) Rounded Estimated Project Cost $106,840 $10,685 $10,110 $127,630 $44,670 $172,400 13- 1444.407 D -4 Irrigation System Master Plan December 2013 Appendix D: Project Cost Estimates City of Pasco kAtac _ptnjeets51351444 - pmcc water resources smdy1407 plan preparationNiHgation system master plan�appendicestappendiz d - pmi"t cost eslimates.dccx Table D -4 New Irrigation Well Project Cost Summary Description Quantity Unit Unit Price Total Mobilization and Demobilization 1 LS $15,140.00 $15,140.00 Site Preparation 1 LS $5,000.00 $5,000.00 Drilling 20 -inch Diameter Surface Seal 20 LF $240.00 $4,800.00 Furnish and Install 20 -inch Diameter Casing 20 LF $100.00 $2,000.00 1.6 -inch Diameter Drill Shoe 1 EA $1,000.00 $1,000.00 16 -inch Diameter DrillinE 180 LF $120.00 $21,600.00 Furnish and Install 16 -inch Diameter Casing 200 LF $70.00 $14,000.00 Install Surface Seal 20 LF $40.00 $800.00 16 -inch Diameter Shoe Cut 1 EA $4,000.00 $4,000.00 Hourly Operations 8 HR $525.00 $4,200.00 Well Casing Alipment 1 EA $500.00 $500.00 16 -inch Diameter Telescoping Stainless Steel Screen 20 LF $200.00 $4,000.00 16 -inch Diameter Riser Pipe and Tail Pie 15 LF $70.00 $1,050.00 Silica Sand 40 BG $16.00 $640.00 Installation of Screen Assembly 16 HR $525.00 $8,400.00 Well Development 16 HR $325.00 $5,200.00 New Well Pump and 150 -HP Motor with Variable-Speed Drive 1 LS $125,000 $125,000.00 Furnish and Install Discharge Piping 500 LF $85.00 $42,500.00 Operate Test Pump 30 HR $240.00 $72200.00 Well Disinfection 1 LS $500.00 $500.00 Well Head Completion 1 LS $350.00 $350.00 Well House 1 LS $37,000.00 $37,000.00 Electrical, Instrumentation, and Controls 1 LS 38,450.00 38,450.00 Water Quality Analysis 1 LS $1,500.00 $1,500.00 Subtotal Construction Contingency (20 percent) Sales Tax (8.6 percent) Construction Subtotal Administrative, Legal, and Engineering Costs (35 percent) Rounded Estimated Project Cost Notes 1. Construction contingency is higher to account for uncertainty in well construction, aquifer characteristics, and hydraulic conditions. $350,030 $70,000 $36,125 $456,160 $159,660 $616,000 13- 1444.407 D -5 Irrigation System Master Plan December 2013 Appendix D: Project Cost Estimates City of Pasco kAm_pmjecls113d 444 - pasco water resources s4ndy1407 plan prepamlionliniigation system master plarilxppendic slappendix d - project cost esl males,docx Muria , Smith & Associates, Inc. n ineers /Planners Tacoma, Washington AGENDA REPORT NO. 22 FOR: City Council ( 1 June 11, 2014 TO: Gary Crutchfiel4 y ffv*ager Regular Mtg.: 06/16/2014 FROM: Ahmad Qayour�i, Public Works Director SUBJECT: Comprehensive Sewer Plan L REFERENCE(S): 1. Comprehensive Sewer Plan — Plan 2. Comprehensive Sewer Plan — Resolution 3. Comprehensive Sewer Plan — Approval Letter From Department of Ecology II. ACTION REQUESTED OF COUNCIL / STAFF RECOMMENDATIONS: 6/16: MOTION: I move to approve Resolution No. adopting the Comprehensive Sewer Plan. III. FISCAL IMPACT: IV. HISTORY AND FACTS BRIEF: A) The City originally built a primary treatment facility in 1954 and in 1970 it was upgraded to meet secondary treatment requirements. The most recent major upgrade was in 1998 to increase the capacity of the facility. The plant currently experiences flows between 1 and 4 million gallons per day (MGD). B) Over the past 12 years, the City has seen significant growth which has resulted in increase flows in the collection system and at the WWTP. This growth, coupled with significant urban expansion since the last planning effort was completed, requires development of a Comprehensive Sewer Plan that reflects current conditions and growth projections. C) The Comprehensive Sewer Plan provides a holistic approach to addressing the City's wastewater collection and treatment needs to meet flows, loads and regulatory demands now and for the foreseeable future. The Comprehensive Sewer Plan (Plan) is intended to meet the requirements of a General Sewer Plan and Facility Plan/Engineering Report per the Washington Administrative Code (WAC), and comply with the City's National Pollutant Discharge Elimination System (NPDES) Permit. D) In September 2011, the City authorized Murray, Smith and Associates, Inc. (MSA), to assist the City in the creation of a Comprehensive Sewer Plan. On January 28, 2013 MSA presented preliminary findings of the plan to Council. Staff worked with the Department of Ecology (DOE) to review and finalize the Comprehensive sewer plan, which includes responses to DOE comments and, on June 11, 2014, DOE approved the plan (see Ref. 3). V. DISCUSSION: A) Staff recommends Council approval of the Comprehensive Sewer Plan. 8(e) COMPREHENSIVE SEWER PLAN CITY OF ]PASCO MAY 2014 rr%ry MURRAY, SMITH & ASSOCIATES, INC. 421 West Riverside Avenue, Suite 99201 Spokane, WA 99201 509.321.0340 11- 1261.411 MSA - ®R 5109 TABLE OF CONTENTS Page EXECUTIVE SUMMARY Introduction............................................................................... ............................... ES -1 Background / Need .......................................................................... ...........................ES -1 FutureConditions .......................................................................... ...........................ES -1 SystemsAnalysis .................. .................................................................................... ES -1 Summary of Systems Analysis .............................................................. ................... ES -2 Capital Improvement Program ..................................................... . ........................... ES -2 INTRODUCTION Purpose................................................................................. ............................... Intro -1 Background........................................................................... ............................... Intro -1 Previous Comprehensive Planning ............................ ............................... Intro- I Approach............................................................................... ............................... Intro -2 Study Area and Study Period ................................................ ............................... Intro -2 Scopeof Work ....................................................................... ............................... Intro -2 1. WASTEWATER SYSTEM DESCRIPTION Introduction................................................................................. ............................... 1 -1 Background................................................................................. ............................... 1 -1 Utility Management Structure ..................................................... ............................... 1 -1 ServiceArea ................................................................................ ............................... 1 -2 Topography...................................................................... ............................... 1-3 Climate............................................................................. ............................... 1 -3 Geology............................................................................ ............................... 1 -3 Municipal Water System ........................ SewerBasins ............................................................................... ............................... 1 -4 EastSewer Basins ............................................................ ............................... 1 -5 South East Pasco Trunk ................................................... ............................... 1 -5 Road 40 East Interceptor ................................................. ............................... 1 -5 Sacajawea Park Road Interceptor .................................... ............................... 1 -5 PSC5................................................................................ ............................... 1 -6 PSC6................................................................................ ............................... 1 -6 Hillsboro Interceptor ........................................................ ............................... 1 -6 EastService Area ............................................................. ............................... 1 -6 NECommercial Area ....................................................... ............................... 1 -7 WestSewer Basins ...................................................................... ............................... 1 -7 PRL.................................................................................. ............................... 1 -7 11- 1261.411 Page 1 - i City of Pasco May 2014 Table of Contents Comprehensive Sewer Plan PSC1 ................................................................................... ............................1 -7 PSC2................................................................................ ............................... 1 -8 PSC3................................................................................ ............................... 1 -8 PSC4................................................................................ ................ .I.............. 1 -8 Broadmoor Boulevard Interceptor ................................... ............................... 1 -9 Road44 Interceptor ......................................................... ............................... 1 -9 Road68 Interceptor ......................................................... ............................... 1 -9 Road84 Interceptor ....................................................... ............................... 1 -10 WestPasco Trunk .......................................................... ............................... 1 -10 NorthCourt Street .......................................................... ............................... 1 -10 Northwest Service Area ............................. 1 -10 Summary of Collection System Facilities ................................. ............................... 1 -11 Gravity Piping Collection System ............................................. ............................... 1 -11 Lift Stations and Force Mains ................................................... ............................... 1 -12 Collection System Performance ................................................ ............................... 1 -14 Interties and Service Agreements .............................................. ............................... 1 -15 ReuseFacility ................................................................ ............................... 1 -15 Port of Walla Walla ....................................................... ............................... 1 -15 WWTP Influent Characterization .............................................. ............................... 1 -16 Wastewater Treatment Facilities Overview .............................. ............................... 1 -17 TreatmentProcesses .................................................................. ............................... 1 -18 Primary Treatment ...................................... ............................... ........... 1 -18 Secondary Treatment ..................................................... ............................... 1 -21 SolidsTreatment ............................................................ ............................... 1 -24 NPDES Discharge Permit ..................... . .............. .. ............................. .. .... I.............. 1 -25 WWTPPerformance ................................................................. ............................... 1 -26 Receiving Water Characterization ............................................. ............................... 1 -27 2. FUTURE CONDITIONS AND FUTURE WASTEWATER FLOW PROJECTION Future Wastewater Flows ............................................................ ............................... 2 -1 ServicePopulation ....................................................................... ............................... 2 -1 Per Capita Wastewater Flow ................................. ............................... ....... 2 -2 ............... Wastewater Flow Projection by Basin ........................................ ............................... 2 -3 Future Residential Development Wastewater Flow Projections . ............................... 2 -8 Future Wastewater Loadings ....................................................... ............................... 2 -9 Future Regulatory Conditions ....................................................... ...........................2 -10 NPDES Permit Requirements ............................................ ...........................2 -10 Receiving Water Conditions .......................................... ............................... 2 -11 General Wastewater Trends ........................................... ............................... 2 -15 Potential Future Regulations ............................... ..................................................... 2 -16 CollectionSystem .......................................................... ............................... 2 -16 Wastewater Treatment ................................................... ............................... 2 -17 Pretreatment Regulations .............................. ............................... ..... 2 -17 ....................... 11- 1261.411 Page 1 - ii City of Pasco May 2014 Table of Contents Comprehensive Sewer Plan 3. COLLECTION SYSTEM ANALYSIS Model Development and Calibration .......................................... ............................... 3 -1 Hydrologic and Hydraulic Model Software Selection ..... ............................... 3 -1 Network Construction................ ...................................... ............................... 3 -1 Flow Generation and Calibration Overview .............................................................. 3 -2 Flow Monitoring Overview .............. ............................... 3 -2 DWFGeneration ......................................................................... ............................... 3 -3 ModelLoading ................................................................. ............................... 3 -3 Diurnal Curve Generation ................................................ ............................... 3 -4 Dry Weather Calibration .................................................. ............................... 3 -4 Wet Weather Flow Generation .................................................. ............................... 3 -12 ModelLoading .............................................................. ............................... 3 -12 Wet Weather Calibration ........................................................... ............................... 3 -13 DesignStorm ............................................... ............................... ...... 3 -16 2031 Dry Weather Flow Generation ......................................... ............................... 3 -17 2031 Wet Weather Flow Generation ......................................... ............................... 3 -19 System Criteria for Deficiencies and Improvements ................. ............................... 3 -20 SystemAnalysis ............................................ ............................... ................ ............ 3 -21 Existing Conditions Analysis Results ........................ ............................... ... 3 -23 Existing Peak Dry Weather Flow .................................. ............................... 3 -23 Existing Peak Wet Weather Flow .................................. ............................... 3 -23 Future (203 1) Conditions Analysis Results ............................... ............................... 3 -23 2031 Peak Dry Weather Flow ........................................ ............................... 3 -23 2031 Peak Wet Weather Flow ....................................... ............................... 3 -23 Lift Station Capacity Analysis .................................................. ............................... 3 -24 Condition and Odor Issues ............................................... ............................... . 3 -25 Summary of Deficiencies .......................................................... ............................... 3 -25 4. WASTEWATER TREATMENT CAPACITY ASSESSMENT Introduction................................................................................. ............................... 4 -1 Existing Treatment Process ......................................................... ............................... 4 -1 UnitProcess Capacity ................................................................. ............................... 4 -3 Hydraulic Capacity Analysis ....................................................... ............................... 4 -7 GravityConveyance .................................................................... ............................... 4 -7 Outfall.............................................................................. ............................... 4 -8 PumpStation Conveyance ........................................................... ............................... 4 -8 Primary Sludge Pump Station .......................................... ............................... 4 -8 Intermediate Clarifier Sludge Pump Station .................... ............................... 4 -8 Trickling Filter Recirculation Pump Station .................... ............................... 4 -9 Return Activate Sludge (RAS) Pump Station .................. ............................... 4 -9 Waste Activate Sludge (WAS) Pump Station .................. ............................... 4 -9 Hydraulic Analysis Results ......................................................... ............................... 4 -9 Reliability and Redundancy Capacity Analysis .......................... ............................... 4 -9 11- 1261.411 Page 1 - iii City of Pasco May 2014 Table of Contents Comprehensive Sewer Plan 5. A Overall Capacity Assessment Results ....................................... ............................... 4 -12 OPERATIONS AND MAINTENANCE Introduction................................................................................. ............................... 5 -1 Regulatory Compliance ............................................................... ............................... 5 -1 Utility Management and Structure .............................................. ............................... 5 -1 OperatorCertification ................................................................. ............................... 5 -2 Wastewater System Operations ................................................... ............................... 5 -3 Operations and Maintenance Manual .......................................... ............................... 5 -3 Routine Maintenance, Repairs and Emergencies ........................ ............................... 5 -4 Cleaning/Jetting and CCTV Inspection ....................................... ............................... 5 -4 System Monitoring and Control .................................................. ............................... 5 -5 Safety Procedures and Emergency Response Program ............... ............................... 5 -6 Bloodborne Pathogens Exposure Control Policy and Procedure Program..... 5 -6 Confined Space Policy and Procedure Program .............. ............................... 5 -6 Heat Related Illness Policy and Procedure Program ....... ............................... 5 -6 Hoisting and Rigging Policy and Procedure Program ..... ............................... 5 -6 Pesticide Policy and Procedure Program ......................... ............................... 5 -6 Respiratory Protection Policy and Procedure Program ... ............................... 5 -7 Sanafoam Vaporooter Policy and Procedure Program .... ............................... 5 -7 Trenching and Shoring Policy and Procedure Program .. ............................... 5 -7 Arc Flash Policy and Procedure Program ........................ ............................... 5 -7 Engineering Design Standards and Specifications ...................... ............................... 5 -7 Record Keeping and Reporting ................................................... ............................... 5 -8 Pretreatment Program .................................................................. ............................... 5 -8 FlowMonitoring ........................................................................ ............................... 5 -8 PublicOutreach ........................................................................... ............................... 5 -9 Customer Complaints ...................................................... ............................... 5 -9 CustomerEducation ......................................................... ............................... 5 -9 Staffing Requirements ................ 5 -9 Conclusions and Recommendations .......................................... ............................... 5 -13 NEEDS INVENTORY AND ALTERNATIVES ANALYSIS Introduction................................................................................. ............................... 6 -1 Collection. System ........................................................................ ............................... 6 -1 Correction of Collection System Deficiencies ................. ............................... 6 -1 Additional Collection System Needs .......................................... ............................... 6 -4 Capitol Avenue Lift Station, ............................ .............................................. 6 -4 Additional Flow Monitoring and Data Collection ...................... ............................... 6 -4 Collection System Odor and Corrosion Alternatives .................. ............................... 6 -4 Road 44 Interceptor Sewer Repair ................................... ............................... 6 -5 West Pasco Trunk Sewer Repair .. ............................... ............ 6 -5 Short Term and Long Term Odor and Corrosion Control .......... ............................... 6 -5 11- 1261.411 Page 1 - iv City of Pasco May 2014 Table of Contents Comprehensive Sewer Plan Road44 Interceptor ......................................................... ............................... 6 -6 WestPasco Trunk ............................................................ ............................... 6 -6 FutureService Areas ................................................................... ............................... 6 -7 RiverviewArea ................................................................ ............................... 6 -7 NorthwestArea ................................................................ ............................... 6 -8 East Industrial Area ......................................................... ............................... 6 -8 HillsboroArea ................................................................. ............................... 6 -9 Wastewater Treatment Systems .................................................. ............................... 6 -9 Wastewater Treatment Alternative Concept ............................... ............................... 6 -9 WWTPAlternatives .................................................................. ............................... 6 -10 Alternative 1 — Upgrade the existing WWTP ................ ............................... 6 -11 Alternative 2 — Upgrade the existing WWTP and construct a water reclamation facility in West Pasco ..................................................... ............................... 6 -11 Alternative 3 — Upgrade the existing WWTP and construct a Full WWTP in WestPasco ..................................................................... ............................... 6 -11 Alternatives Evaluation and Ranking ........................................ ............................... 6 -11 Evaluation Criteria ......................................................... ............................... 6 -11 Alternatives Ranking ..................................................... ............................... 6 -12 Selection of Preferred Alternative ................................. ............................... 6 -15 Existing WWTP Needs Inventory and Projects ........................ ............................... 6 -15 Headworks Improvement— Grit Removal ..................... ............................... 6 -15 Primary Treatment Expansion/Improvement — Primary Clarifier ................ 6 -16 Process Building Modification ...................................... ............................... 6 -16 Secondary Treatment - Nitrification ............................................................. 6 -17 Secondary Treatment — Phosphorus Removal ............... ............................... 6 -17 Secondary Clarification Expansion / Improvement ....... ............................... 6 -17 Waste Activated Thickening — Dissolved Air Floatation Thickener ............ 6 -18 Anaerobic Digestion — 3rd Digester .............................. ............................... 6 -18 Biosolids Dewatering — Screw Press Dewatering ......................................... 6 -18 River Outfall Upgrade ................................................... ............................... 6 -18 Water Reclamation .................................................................... ............................... 6 -19 Existing Reuse Facility .................................................. ............................... 6 -19 Water Reclamation Opportunities ................................. ............................... 6 -19 Water Reclamation Demonstration Project ................... ............................... 6 -19 Water Rights Impacts ..................................................... ............................... 6 -20 7. CAPITAL IMPROVEMENT PROGRAM Introduction................................................................................. ............................... 7 -1 Basis of Opinions of Probable Costs ........................................... ............................... 7 -1 ConstructionCost ............................................................ ............................... 7 -1 ProjectCost ...................................................................... ............................... 7 -2 PipeCost .......................................................................... ............................... 7 -2 Manholes.......................................................................... ............................... 7 -4 11- 1261.411 Page 1 - v City of Pasco May 2014 Table of Contents Comprehensive Sewer Plan SurfaceRestoration....... ................................................... ............................... 7 -5 Collection System Capital Improvement Projects ....................... ............................... 7 -6 Pearl Street Lift Station Improvements ........................... ............................... 7 -6 Maitland Lift Station Improvements ................................ ............................... 7 -7 9th and Washington Lift Station Improvements — Phase 1 ............................. 7 -7 9th and Washington Lift Station Improvements -- Phase 2 ............................. 7 -7 Capitol Avenue Lift Station ............................................. ............................... 7 -7 Additional Flow Monitoring and Data Collection ...................... ............................... 7 -7 Road 44 Interceptor Sewer Repair ................................... ............................... 7 -8 West Pasco Trunk Sewer Repair ..................................... ............................... 7 -8 Road 44 Corrosion and Odor Control (Phase 1, 2, 3) ...... ............................... 7 -8 West Pasco Trunk Corrosion and Odor Control (Phases 1, 2) ....................... 7 -9 Annual City Sewer Collection System Programs ........................ ............................... 7 -9 Sewer Line Repair Program ............................................. ............................... 7 -9 Annual Collection System Rehabilitation Programs ....... ............................... 7 -9 Annual Sewer Line Extensions Program ......................... ............................... 7 -9 FutureGrowth Area ............................... ................................... ............................... 7 -10 Northwest Service Area ................................................. ............................... 7 -10 GrowthArea .................................................................. ............................... 7 -11 Wastewater Treatment Plant Capital Improvements ................. ............................... 7 -11 Biosolids Dewatering ..................................................... ............................... 7 -11 Primary Clarification Expansion ................................... ............................... 7 -11 Process Control Building Modifications ........................ ............................... 7 -12 Waste Activated Sludge (WAS) Thickening ................. ............................... 7 -12 Secondary Clarification Expansion — Secondary Clarifier 3 ........................ 7 -13 Headworks Improvements ............................................. ............................... 7 -13 Secondary Treatment Nitrification ................... -.......................................... 7 -13 River Outfall Upgrade Phase 1 ...................................... ............................... 7 -14 River Outfall Upgrade Phase 2 ...................................... ............................... 7 -14 Anaerobic Digestion — Digester No. 3 ........................... ............................... 7 -14 Secondary Treatment Phosphorus Removal .................. ............................... 7 -14 Trickling Filter and Intermediate Clarification System . ............................... 7 -15 Aeration Basin and Aeration System ............................. ............................... 7 -15 Secondary Clarification Expansion — Secondary Clarifier 4 ........................ 7 -15 Water Reclamation Facility ........................................... ............................... 7 -15 Wastewater Treatment Plant Recommended Capital Improvements Projects ......... 7 -16 Capital Improvement Program .................................................. ............................... 7 -17 8. FINANCIAL CONSIDERATIONS Introduction................................................................................. ............................... 8 -1 Capital Improvement Funding ..................................................... ............................... 8 -1 RateImpact .................................................................................. ............................... 8 -1 Capital Improvement Financing., ... ........................................................................... 8 -2 Pay -As- You -Go ............................................................... ............................... 8 -2 11- 1261.411 Page 1 - vi City of Pasco May 2014 Table of Contents Comprehensive Sewer Plan Bonds............................................................................... ............................... 8 -2 InterimFinancing ............................................................. ............................... 8 -3 Privatization..................................................................... ............................... 8 -4 Leasing............................................................................ ............................... 8 -4 AdValorem Taxes ........................................................... ............................... 8 -5 Wastewater Grants and Loans ......................................... ............................... 8 -5 9. COMMUNITY OUTREACH AND ENVIRONMENTAL DOCUMENTATION CommunityOutreach .................................................................. ............................... 9 -1 Council Meeting, September 12, 2011 ..... ............................... ........ 9 -1 Open House, April 18, 2012 ............................................ ............................... 9 -1 Council Meeting, January 28, 2013 ................................. ............................... 9 -1 Environmental Documentation .................................................... ............................... 9 -1 FIGURES 1 -1 2012 Public Works Personnel Organization Chart ...................... ............................... 1 -2 1 -2 Wastewater Facilities ................................................................ ............................... 1 -28 1 -3 Sewer Service Area and Sewer Basins ...................................... ............................... 1 -29 1 -4 Water and Sewer Facilities ........................................................ ............................... 1 -30 1 -5 City of Pasco WWTP Schematic ............................................... ............................... 1 -20 2 -1 Industrial Areas Defined by Sewer Basins ................................ ............................... 2 -21 2 -2 Relevant Water Quality Assessment Listings ........................... ............................... 2 -13 3 -1 Flow Monitoring Locations ....................................................... ............................... 3 -27 3 -2 Dry Weather Flow Calibration — Site 1 ....................................... ............................... 3 -7 3 -3 Dry Weather Flow Calibration — Site 2 ....................................... ............................... 3 -7 3 -4 Dry Weather Flow Calibration — Site 3 ....................................... ............................... 3 -8 3 -5 Dry Weather Flow Calibration — Site 4 ....................................... ............................... 3 -8 3 -6 Dry Weather Flow Calibration -- Site 5 ....................................... ............................... 3 -9 3 -7 Dry Weather Flow Calibration — Site 6 ....................................... ............................... 3 -9 3 -8 Dry Weather Flow Calibration — Site 7 ..................................... ............................... 3 -10 3 -9 Dry Weather Flow Calibration — Site 8 ..................................... ............................... 3 -10 3 -10 Dry Weather Flow Calibration — Site 9 ..................................... ............................... 3 -11 3 -11 Dry Weather Flow Calibration — Site 10 ................................... ............................... 3 -11 3 -12 Wet Weather Flow Calibration — Primary Event ...................... ............................... 3 -14 3 -13 Wet Weather Flow Calibration -- Secondary Event ................... ............................... 3 -15 3 -14 Wet Weather Flow Calibration —Third Event ........................... ............................... 3 -15 3 -15 SCS Type I Design Storm ...................................................... ............................... 3 -16 3 -16 Comparison of Design Storrn with Calibration Storm Events .. ............................... 3 -17 3 -17 Sewer Sub -Basin Areas ............................................................. ............................... 3 -28 3 -18 Surcharging of Existing Conditions .......................................... ............................... 3 -29 3 -19 Collection System Capital Improvement Projects ..................... ............................... 3 -30 3 -20 Areas of Odor and Corrosion Concern ...................................... ............................... 3 -31 11-1261.411 Page I - vii City of Pasco May 2014 Table of Contents Comprehensive Sewer Plan 4 -1 City of Pasco WWTP Schematic ................................................. ............................... 4 -2 4 -2 Primary Sedimentation Tank Performance ................. 4 -5 5 -1 2012 Public Works Personnel Organization Chart ...................... ............................... 5 -2 5 -2 Historical CCTV ....................................................................... ............................... 5 -15 5 -3 CCTV Basins ............................................................................. ............................... 5 -16 5 -4 Low Velocity — 2011 Pipes 12 Inches and Larger .................... ............................... 5 -17 5 -5 Low Velocity — 2031 Pipes 12 Inches and Larger .................... ............................... 5 -18 5 -6 Wastewater System Staffing Comparison and Projection ......... ............................... 5 -13 6 -1 Riverview Area - Service Concept .............................................. ............................... 6 -21 6 -2 Northwest Area- Service Concept .............................................. ............................... 6 -22 6 -3 East Industrial Area- Service Concept ...................... . ................ ............................... 6 -23 6 -4 Hillsboro Area- Service Concept ............... ............................... 6 -24 6 -5 Satellite WWTP Concept .......................................................... ............................... 6 -25 7 -1 Collection System ...................................................................... ............................... 7 -19 7 -2 Northwest Area - Service Concept .............................................. ............................... 7 -20 7 -3 Riverview Area - Service Concept .............................................. ............................... 7 -21 7 -4 Southeast Industrial Area - Service Concept ............................... ............................... 7 -22 7 -5 Water Reuse Facility Concept ................................................... ............................... 7 -23 7 -6 Wastewater Treatment Plant Improvements ............................. ............................... 7 -24 TABLES ES -1 Comprehensive Sewer Plan — Capital Improvement Program .. .............................ES - 3 1 -1 ........... ............................... Summary of Climatological Information ......................... 1 -3 1 -2 Gravity Pipe ............................................................................... ............................... 1 -11 1 -3 City of Pasco Lift Station Summary .......................................... ............................... 1 -13 1 -4 Force Mains ......................................... ............................... ....................... . .............. 1 -14 1 -5 2006 to 2008 Influent Wastewater Characterization ................. ............................... 1 -16 1 -6 2009 to 2011 Influent Wastewater Characterization ................. ............................... 1 -17 1 -7 NPDES Permit Limits and Requirements ................................. ............................... 1 -25 1 -8 Average Effluent Quality .......................................................... ............................... 1 -26 1 -9 Ambient Background Data ........................................................ ............................... 1 -27 2 -1 OFM Population Projections for Franklin County ............... ............ 2 -2 ......................... . 2-2 City of Pasco Population Projections .......... ............................... ................. 2 -2 2 -3 Northwest Per Capita Wastewater Flow Comparison ................. ............................... 2 -3 2 -4 City of Pasco Population Based Wastewater Flow Projection by Basin .................... 2 -5 2 -5 City of Pasco Industrial Wastewater Flow Projections by Basin ............................... 2 -7 2 -6 City of Pasco Wastewater Flow Projections by Basin ................ ............................... 2 -8 2 -7 Future Residential Development Wastewater Flow Projection Assumptions............ 2 -9 2 -8 Projected Year 2031 Wastewater Characteristics ..................... ............................... 2 -10 2 -9 Relevant Water Quality Assessment Listings .......................................................... .......................... 2 -14 3 -1 Modeled Lift Stations .................................................................. ............................... 3 -2 3 -2 Original and Final (Calibrated) DWF Inflows, by Flow Monitor .............................. 3 -5 3 -3 DWF Calibration Statistics .......................................................... ............................... 3 -6 3 -4 Precipitation Events used for Wet Weather Flow Calibration .. ............................... 3 -13 11- 1261.411 Page I - viii City of Pasco May 2014 Table of Contents Comprehensive Sewer Plan 3 -5 WWF Calibration Statistics ....................................................... ............................... 3 -14 3 -6 Sewershed Ratios ...................................................................... ............................... 3 -20 3 -7 Collection System Criteria ........................................................ ............................... 3 -21 3 -8 Overview of Model Design Scenarios and Flows ............................................. ....... 3 -22 3 -4 Lift Station Capacity Summary ................................................. ............................... 3 -25 3 -10 Summary of Collection Deficiencies ......................................... ............................... 3 -26 4 -1 Unit Process Design Criteria . ............................... .... 4 -4 4 -2 Unit Process Capacity Results in Million Gallons Per Day (MGD) .......................... 4 -6 4 -3 Process Capacity Results ........................................................... ............................... 4 -10 4 -4 Overall Capacity Resul ts ........................................................... ............................... 4 -12 4 -5 Estimated WWTP Capacity Limits ........................................... ............................... 4 -13 5 -1 Operator Certification ...................... ............................... ................... 5 -3 5 -2 CCTV and Cleaning/Jetting Summary ........................................ ............................... 5 -5 5 -3 Sewer Collection and Treatment Staffing Comparisons ........... ............................... 5 -11 6 -1 Summary of Collection Deficiencies ........................................... ............................... 6 -1 6 -2 Alternatives Ranking ................................................................ ............................... 6 -14 7 -1 Summary of Additional Costs ..................................................... ............................... 7 -2 7 -2 Gravity Sewer Costs .................. ............................... ....................... . 7 -3 7 -3 Force Main Sewer Costs .............................................................. ............................... 7 -4 7 -4 Manhole Construction and Repair Costs ..................................... ............................... 7 -6 7 -5 Surface Restoration ..................................................................... ............................... 7 -6 7 -6 Collection System Capital Improvements ................................. ............................... 7 -10 7 -7 Wastewater Treatment Plant Capital Improvements ................. ............................... 7 -16 7 -8 Comprehensive Sewer Plan — Capital Improvement Program .. ............................... 7 -18 8-1 Summary of Residential Sewer Rate Impact ............................... ............................... 8-2 APPENDICES Appendix A Appendix B Appendix C Appendix D Appendix E Appendix F NPDES Permit Ecology Administrative Order Cost Estimates — Collection System Cost Estimates — WWTP Public Presentations SEPA 11- 1261.411 Page 1 - ix City of Pasco May 2014 Table of Contents Comprehensive Sewer Plan Executive Summary EXECUTIVE SUMMARY Introduction The City of Pasco (City) retained the services of Murray, Smith & Associates, Inc. (MSA) to prepare this Comprehensive Sewer Plan (Plan). The general mission of the Plan is to develop a plan that will define an effective, sustainable and economical approach to manage the current and future needs for the City. Background/Need The City owns and operates a wastewater collection and treatment system to manage the domestic wastewater needs of the community. The City operates the system under a National Pollutant Discharge Elimination System Waste Discharge Permit issued by the Washington State Department of Ecology. The previous Plan was completed in 1992 and amended in 1999. Recent growth in the City, which has resulted in increased wastewater flows, coupled with significant urban expansion since the last planning effort was completed, requires the need to develop a comprehensive plan that reflects current conditions and growth projections. Future Conditions In collaboration with City staff, future conditions were identified to use in the comprehensive planning process. Population projections, wastewater flows and loadings were estimated using County and City planning documents and existing wastewater flow data. The future service area includes the entire City's Urban Growth Area (UGA) and two (2) areas outside the UGA that have been defined by the City as potential future services areas. Systems Analysis Wastewater collection and treatment systems were analyzed to identify existing deficiencies and determine their capabilities to meet future conditions. For the wastewater collection system, a hydraulic computer model of the system was created to simulate the network of sewers and lift stations in the system. The hydraulic model allowed for the evaluation of system performance under multiple flow scenarios that represent current and future conditions. The model also allowed for the development of strategies to serve areas currently outside the City's existing service area. At the wastewater treatment plant, unit processes were evaluated based on industry standards and previous assessments to define existing plant capacity and determine its capability to meet future conditions. The processes were evaluated using current and future flows and loading projections as well as anticipated future regulatory requirements that will place greater restriction on effluent water quality. 11-1261.411 Page ES -1 City of Pasco May 2014 Executive Summary Comprehensive Sewer Plan Summary of Systems Analysis • The existing collection system is in relatively good shape and has the capacity to accommodate current and future flows within the planning period with relatively few system improvements. • Expansion of the collection system to serve future service areas can be accommodated by the existing collection system and wastewater treatment plant. The wastewater flows over the planning period can be accommodated by the existing wastewater treatment plant. A second wastewater treatment plant in West Pasco is not cost effective or necessary within the planning period. • The existing wastewater treatment plant is in relatively good condition and performing well. The plant has the capabilities to expand processes and meet future flow and regulatory conditions. Capital Improvement Program Through the analysis of the City's wastewater collection and treatment systems to accommodate current and future conditions, system improvements were identified and opinions of cost developed. Through workshops with City staff, system improvements were further refined and prioritized in order to create a Capital Improvement Program for the 20- year planning period. Table ES -1 provides as summary of the Capital Improvement Program. 11- 1261.411 Page ES -2 City of Pasco May 2014 Executive Summary Comprehensive Sewer Plan Table ES -1 City of Pasco Comprehensive Sewer Plan - Capital Improvement Program Wmtrwater 7ttadneat PFaa Fmprmeme¢I ProjaF Desertptioe Need' Eat. Cast z20D0 - Planned Year of Project and Estimated Cwt in 2013 $'a z 1000 2013 2014 2015 2016 2017 MIS 2019 2020 2021 2022 2023 2024 202.5 2026 2027 2028 2029 2030 2031 2032 2033 81 -lilts Dessatai S.U. Cr-tWEi ansian S60 S50 - - - Prima TreatmentE nstanllm ravememi -Prim Clarifier NFl- .3 Ft $125 S250 $2,09f1 _ - --- - arts Activated Ttdekemin _ System GetmetwLir anslam _L;340 $883 Wert Pasco T"Rk Sewer Repair_ r.,.dM.. $2,315 5106 $777 $1,870 - _ S madary Clarilieafl- Erlmosrianlfm rovement Paine 1 Flaw S3,016 _ 5348 $2668 9th and Washin o¢LIR SUHO¢Im rmvem- I,- Phaeel Co¢dltla¢ S673 - $599 eadworlolm ro mreatt Cmmdtl- 52,015 _ S700 S1,37S _ tart Street Lift Station lmpravemeats Condltio¢ $194 S23 $171 card. Trearment - Nitritigtion Rplgray SI1,592 5500 $1,300 $4,896 54,896 _ _ Condition $297 $28 River Outfall U dt Pha rc 1 F'bw S561 _ S69 5493 ofd 44 Ca-d.. and Odor Coatsal- Phone 1 Condition S68 _ Primary Treatment Ezprasloallmpeavememt- Primary Clarifier No. 4 Fimw $1547 $150 $1,397 oad 44 Corrosion aad Odor Control- Phase S Cauditiaa $624 Process Duliftj S57 5819 _ $95 $724 Read 44 Corrosion and Odor Cant -] -Phase 3 _ 5715 lnaerobic Lt ration -Oi ester No.3 Flaw $5,540 5632 fi66O 52,440 82,440 Ca¢ditioa 5763 'ver Outfall U lade Phasc 2 aui Flow Si,913 $89 $675 5230 $1,883 Flow $754 ecaldary Meat - P horaza Rmamva] _ R atom $6,541 _ $667 Chapel tlRl Bird. EU -ion - Sewer System GrsswthiExpaasiad 5550 $785 $2;878 _ tconda Clarifi -firm Ex s¢s1 -5iri ravemrmt Phase 2 Flmw $2,690 _ ewer Line FAtemtion - Rd 100 Sysrem GrowthlEspanslod SSW S3111 OTAL- ALL IMPROVEMENTS 539457 SO $750 52090 SO $106 $777 51,418 54551 51,943 56.293 54,991 5724 566➢ $2,670 54,121 Sil SO 30 57A5 $3158 Ctleetla Sysem Impwemeet Inject Oacrlptbn F-qL Ca z10t10 Planned Year oPro eet and mCwmt 1n 2015 S'e x 1000 2013 2024 2015 2016 2017 2018 2019 2020 2021 2022 202# 2024 2025 2026 1 2027 2028 1 2029 2030 1 2031 1 2032 2033 dditional Flow Monitoring and Late Collection CandlHOn S60 $60 0"cl Lift Station tin. aavements Conditiom $125 $125 Wert Pasco T"Rk Sewer Repair_ r.,.dM.. $2,315 $446 $1,870 9th and Washin o¢LIR SUHO¢Im rmvem- I,- Phaeel Co¢dltla¢ S673 $78 $599 _ tart Street Lift Station lmpravemeats Condltio¢ $194 S23 $171 _ Wert Pasoa Tn mk Corrosion and Odor Contra] - Phase 1 Condition $297 $28 $239 ofd 44 Ca-d.. and Odor Coatsal- Phone 1 Condition S68 $18 $50 oad 44 Corrosion aad Odor Control- Phase S Cauditiaa $624 S57 $567 Read 44 Corrosion and Odor Cant -] -Phase 3 Condition 5715 $83 5632 eat Pas Trunk Corrosiooand Odor Cmntml- Phase2 Ca¢ditioa 5763 $89 $675 _ h and WuNn oo Lift Station lar ravements Phase 2 Flow $754 _ S87 $667 Chapel tlRl Bird. EU -ion - Sewer System GrsswthiExpaasiad 5550 350 S500 ewer Line FAtemtion - Rd 100 Sysrem GrowthlEspanslod SSW s50 $450 Capitol Lift Station System GrowthfErpamlod $939 $108 $831 _ East Lift Station (Riverview Area) System GrawtwExpamsiou $1339 5268 $1,071 O" Mal¢ (Nord -W Area) Svstem GW.tMEi amiou 55.297 S397 S4,90U 4^ Mai.(Nmrthwest Area) System GrawthlExpaastod 57.152 _ $900 S3,000 $3,252 _ Narita L'dl Station(Snmtheast loduslrW Arm) Svarem GrowthlEspxwiart` 51,4114 5400 _ SI.,004 t" Mid. (Nonkwtae Area) System GrowthlExpamiao $2,242 5700 51,542 est Lift Scadoa(Nmrthwtat Area) System CrawlhlE amioas 11,694 $1,694 0" Ma11(Southeast Industrial Area) System GrawthlEx a¢sion S2,669 $400 _5_2,269 esf Lift Sudan (Rltrervlew Area) I System Grawth/Eapamiotls 51,028 1 $200 I828 sst Lift Station [Northwest Area System GrawthlErp..W.° $1,860 $200 1 $1,660 mnuaFSewer Line RnOniag Pragrarn _ _ at Sewer Li- Eteasi om C -01Hao 57,700 59114 $400 $300 5300 6300 S400 54011 5400 3401/ 5400 S4W $400 $400 3400 $400 $400 0o $400 $400 5 y tem G.w-tb F.z anaion 55,5011 S90 5200 $240 5200 $200 5200 5300 S300 5300 $300 S300 5300 $100 5300 S3o0 S300 0 $300 $300 T, Line Repairs Card. 52000 S50 5100 $100 5100 $100 S]OO $100 5100 Sloo S10o 5100 $]DO 5100 S]OU 3100 SIDn �141OS341111 00 SI110 TAL -ALL IMPROVEMENTS S48A57 51,044 $1,728 57.471 51,398 S977 $907 S2A00 $1,788 S2y46 5908 S1,631 52,100 $5504 15,594 53,094 $4,097 .1) 5887 51A67 TOTAL - WASTEWATER TREATMENT PLANT AND COLLECTION SYSTEM IMPROVEMENTS $87 14 N.I. 1. Need is defined as the justification for the CIP Improvement and is chanaetized by fora general categories: Flow -To accommodate the anticipated wasicwater ❑ow anNor loadings Condition - Existing facilities rtquire mplaccme.1 andfw rthabiliurlion due Io lhti condition andfor service lift 1-iolioas System Cnawthl .pansion - To support Ile conunacd growth and erlanaion of the system maccammadnte a growing scr,ice area and popalalion base Reis hri-y - le wmpl) with cunem at Ni-. regulations and permit regniremenls . Ciry planned pmjcd prior to CSP. . Pettenile] growth arcs capital impmvemenis. . includes Road 44 lntemepmr Sever R�pair in 2013 budgm. _ This lint item is part of the tad o rations and maitenance bodget aad n just shown forieformatioml paiwses. 11- 1261,411 Page ES -3 Ciry of Pasco May 2014 Executive Summary Comprehensive Sewer Plan Introduction INTRODUCTION Purpose The purpose of this Comprehensive Sewer Plan (Plan) is to provide a holistic approach to addressing the City of Pasco's (City) wastewater collection and treatment needs to meet flows, loads and regulatory demands now and for the foreseeable future. Over the past 10 years the City has seen significant growth which has resulted in increased wastewater flows in the collection system and at the wastewater treatment plant (WWTP). This growth, coupled with significant urban expansion since the last planning effort was completed, requires development of a comprehensive plan that reflects current conditions and growth projections. Background The City owns and operates a wastewater collection and treatment system to manage the domestic wastewater needs of the community. The City's collection system is a conventional collection system that mainly relies on gravity sewers to convey wastewater flow to the treatment facility. Pump stations and force mains are used to supplement the gravity system. The City operates an activated sludge WWTP to oxidize, nitrify and disinfect the wastewater flow prior to discharge to the Lake Wallula reach of the Columbia River. The City originally built a primary treatment facility in 1954 and in 1970 it was upgraded to meet secondary treatment requirements. The most recent major upgrade was in 1998 to increase the capacity of the facility. Recently, minor unit process upgrades were pursued by the City to address process limitations and operations and maintenance issues. The plant currently experiences flows between 4 and 5 million gallons per day (MDG). Previous Comprehensive Planning The City's Plan, dated November 1992, was included as a part of the 1995 -2015 Comprehensive Plan and adopted by the City Council on August 21, 1995. The Plan provided details for proposed improvements for the City to meet future growth and expansion of the sewer service area to the extents of the Urban Growth Area (UGA). The improvements included the establishment of preliminary routes for future trunk sewers, improvements to the wastewater treatment facility and lift stations. On March 15, 1999, City Council passed Resolution 2433 adopting the 1999 Amendment to the Plan, which refined the location of the trunk sewer to service the Riverview Area to provide a more efficient and cost effective route. On March 29, 1999 the Washington State Department of Ecology approved the 1999 Amendment. 11- 1261.411 Intro -1 City of Pasco May 2014 Introduction Comprehensive Sewer Plan Approach With the age of the previous planning documents, combined with the recent system growth, a significant portion of the comprehensive planning process was dedicated to understanding current system conditions and limitations, Since the last Comprehensive Sewer Plan, the system has greatly expanded and flows increased, significantly impacting the characteristics and performance of both the collection and treatment systems. Understanding the current characteristics and performance of these systems was vital in the selection and evaluations of feasible alternatives for system improvements to meet current and future needs. Because this understanding of current system characteristics and performance was critical in the planning process, the approach to completing the Comprehensive Sewer Plan is based on close collaboration with City staff. Study Area and Study Period The study area for this plan includes all area with the City's UGA and two (2) areas outside the UGA that have been defined by the City as potential future services areas. The study period for this Plan is a 20 -year planning period. Scope of Work Murray, Smith & Associates, Inc. (MSA) was retained by the City to assist the City in the creation of a Plan. MSA worked closely with the City to develop a Scope of Work that efficiently addresses key issues, engages City staff and the community, takes advantage of existing planning documents and provides the necessary comprehensive planning to guide the City in current and future wastewater management decisions. The Scope of Work for this Plan includes the following abbreviated elements: • Public Involvement — Supporting the City in the public involvement aspects of the project and presentation to City Council. • Data Collection — Collection and review of all pertinent information on the City's wastewater collection and treatment systems necessary to complete the planning. • Wastewater System Description — A comprehensive description of the City's wastewater collection and treatment systems. • Future Condition Forecasting — A projection of future wastewater flows and regulatory requirements that will influence wastewater collection and treatment system needs. • Collection System Analysis — An evaluation of the collection system's performance and deficiencies under current and future wastewater flow conditions. This element includes development and operation of a hydraulic model to simulate current and future conditions. 11- 1261,411 Intro -2 City of Pasco May 2014 Introduction Comprehensive Sewer Plan • Wastewater Treatment Evaluation — An evaluation of the WWTP's performance and deficiencies under current and future wastewater flow and loading conditions. • Operations and Maintenance Overview —A general overview of the City's operation and maintenance systems and programs for the wastewater collection and treatment systems. • Wastewater System Needs Inventory and Alternatives Analysis —Based on system deficiencies identified, review wastewater system needs and alternatives to meet current and future wastewater flow conditions. This includes an analysis of the need for a second WWTP in West Pasco. • Capital Improvement Plan —Develop a Capital Improvement Plan (CIP) for the 20 -year planning period defining recommended wastewater collection and treatment improvements. The development of the CIP will include defining project costs and implementation schedule, and working with the City to define impact on utility rates. • Documentation — Prepare a single report that documents and summarizes the work performed under this scope of services. 11- 1261.411 Intro -3 City of Pasco May 2014 Introduction Comprehensive sewer Plan Section 1 SECTION 1 WASTEWATER SYSTEM DESCRIPTION Introduction This section of the Comprehensive Sewer Plan (Plan) provides an overview of the City of Pasco's (City) current wastewater collection and treatment systems including service area, facilities and management structure. Background The City built their first wastewater treatment plant (WWTP) in 1954 as a primary treatment facility. In 1970, the plant was modified and added biological treatment to meet secondary treatment requirements for a population equivalent of 30,000. Again in 1998 the treatment facility was upgraded to increase the design capacity to accommodate anticipated growth of the City's service area. In 1992 the City completed its most recent Comprehensive Sewer Plan, which defined the approach for expansion of the existing sewer collection system and WWTP expansion to meet the needs of future growth. This plan was amended in 1999, modifying some of the proposed recommendations for serving areas to the west. Currently, the City's wastewater collection system contains over 240 miles of sewer pipeline, approximately 4,430 manholes and includes 10 lift stations. The collection system collects primarily domestic wastewater, which is conveyed to the WWTP located in the southeast portion of the City. After treatment, the plant discharges the effluent to the Lake Wallula reach of the Columbia River. Service area policies of the Sewer Utility are defined in Titles 03, 13, 14 andl6 of the Pasco Municipal Code. This includes connection charges and monthly user charges, provisions for use of the sewer system, prohibited discharges to public facilities, requirements for pretreatment, general standards for building sewers, general standards for public sewer construction, and requirements for compliance with the Uniform Plumbing Code. The City maintains a separate reuse system that collects, stores and then land applies food processor wastewater north of the City. Constructed in 1995, the Reuse Facility was constructed to specifically serve the City's major food processors and is operated seasonally. The Reuse Facility is a separate entity from the City's wastewater collection and treatment systems and therefore is not included in this Plan. Utility Management Structure The City's wastewater collection system and treatment plant operate within the Public Works Department under the Field Division Manager and Plant Operation Manager as an enterprise fund (utility). The Plant Operation Manager oversees the wastewater plant and sewer collection system lift stations. The Plant Operation Manager directs the overall operations and maintenance activities, including the laboratory. The Field Division Manager oversees 11- 1261.411 Page 1 -1 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan the sewer collection system operation and maintenance. There are 13 staff maintaining the daily operation of the WWTP and lift stations. The collection system is maintained by eight (8) staff. The organizational structure for the utility is shown in Figure 1 -1. Figure 1 -1 2012 Public Works Personnel Organization Chart Field Division Manager Jess Greenough Depailment Assistant II Derek it•UNI(# Assistant Field Manager Paul Rhoads Sewer Collections Lead Worker I Position Heavy Equipment Operator °2 Positions I Utility Maintenance Worker I PositiPositioon-- I Laborer I Position Service Area Public Works Director Ahmad Qm oami Administrative Assistaut lI Jrtiissa Phidez Administrative Assistant I Kim Hoist Laboratory j I Lab Technician I Plant operations Manager Rene! Klempel Administrative Assistant I Rhonda Rlggle Reu-w Wastewater Facility Treatment Lead Operator F Cbieloperati I Position 1 Posi lion Reuse operator Plant Operate 1 Position 4 Operators Plant Utility wo 1 Position Instrument Tech John Reinkens Wastewater Maintenance Mechanic 1 Position 1 1 Position I The existing and future collection system service area is shown in Figure 1 -3 at the end of this Section. The collection system service area includes all areas within the City limits and Urban Growth Area (UGA) and includes two (2) future service areas outside the UGA. Currently, the City only collects wastewater within the City limits. The future service areas are based on the 20 -year planning period, which is discussed in greater detail in Section 2 - Future Conditions. This Plan separates the service area into 20 sewer basins covering over 48 square miles. Figure 1 -3 at the end of this Section depicts these sewer basins. 11- 1261.411 Page 1 -2 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan Topography The topography of the service area consists of flat and gently sloping terrain. The area slopes gently upward, south to north, from the banks of the Columbia River at elevation 340 feet to Riverview Heights at elevation 530 feet. Seasonal watercourses are oriented generally southerly as they drain toward the Columbia River. Climate The climate of the area is semi -arid, characterized by low annual precipitation and large inter - seasonal temperature variations. Strong winds from the west and southwest occur throughout the year and are responsible for high evapotranspiration rates in summer. Annual precipitation seldom exceeds 10 inches, with much of the total arriving with summer thunderstorms. Climatological information for the City is summarized in Table l -1. Table 1 -1 Summary of Climatological Information Annual Average Temperature 55.10 °F Annual Hi Eh Temperature 91.46 °F Annual Low Temperature 27.20 °F Annual Rainfall 8.47 inches Geology The geology of the City's planning area is the result of the long history of volcanic activity, which has influenced the geology of the entire Columbia Basin. At the surface is a layer of unconsolidated alluvial and glaciofluvial materials ranging in depth from 0 to 120 feet. The depth of this overburden typically does not exceed 30 feet. The overburden rests on a thick series of basaltic strata, known as the Columbia River Basalts, each of which may consist of many distinct basalt flows. These basalts are interbedded with two (2) major and many minor sedimentary strata. Locally significant hydrogeologic units occur in the Saddle Mountain and Wanapum Basalts, in the Mabton Interbed, and in the overburden where its depth is sufficient. Municipal Water System The City operates and maintains a municipal water system that provides potable drinking water to residents within the City limits and areas outside the City limits, but within the City's UGA. The extent of the water system, with respect to the wastewater collection and treatment system, can be seen in Figure 1 -4 at the end of this Section. The municipal water system is supplied from treated surface water withdrawals from the McNary Pool of the 11- 1261.411 Page 1 -3 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan Columbia River to the Butterfield Water Treatment Plant and the West Pasco Water Treatment Plant. The City did have four (4) groundwater wells located in West Pasco off Road 108, which served as an emergency backup supply. The City last updated its Wellhead Protection Plan in 1999 before these well sources were abandoned. A copy of the City's Wellhead Protection Plan can be found in the City's 2010 Water Master Plan. At this time, the City has abandoned all emergency backup supply groundwater wells providing a source of supply to the City Water Utility. The Water Filtration Division, which is part of the City's Public Works Department, operates two (2) water treatment facilities. This division is responsible for delivering quality drinking water to customers that meets and exceeds state and federal requirements. The two (2) treatment facilities are defined as follows; the Butterfield Water Treatment Plant has a capacity of 29 million gallons per day (mgd) and is a conventional filtration plant (i.e., coagulation, flocculation, sedimentation and filtration) that uses chlorine as the primary disinfectant, and aluminum sulfide (alum) and polymer for coagulation. The West Pasco Water Treatment Plant came online in 2010 and has a capacity of six (6) mgd with an ultimate capacity of 24 mgd. This is a pressure membrane treatment facility with disinfection using bulk hypochlorite. Additionally, both Treatment Plants add fluoride to the finished water. The City's water system consists of approximately 280 miles of watermain, ranging in size from less than six (6) inches in diameter up to 36 inches in diameter. The City follows the Criteria for Sewage Works Design for separation of potable water utilities from the sewer facilities. The water system is separated into three (3) pressure zones. In addition to the two (2) high service pump stations at the two (2) water treatment facilities, there are four (4) booster pump stations located within the water system. The City's current storage system consists of three (3) water storage reservoirs with a 13.5 million gallons (MG) combined storage capacity. The three (3) reservoirs are located throughout the service area in addition to the 0.485 MG clearwell at the Butterfield Water Treatment Plant and the 1.62 MG clearwell at the West Pasco Water Treatment Plant. The Water Distribution Division is responsible for maintaining and repairing the water system and works with the Water Treatment Plant to maintain water quality. As shown in Figure 1 -4 at the end of this section, the City's wastewater collection system services a similar area compared to the water system. The current difference in service area is that the City typically does not provide wastewater collection outside the City limits. The majority of the City's wastewater comes from customer's use of the municipal water system. Thus wastewater flows and municipal water demand follow a similar diurnal cycle throughout the year. Municipal water flows see a much higher demand in the summer associated with irrigation demands. Sewer Basins The existing and future service area was divided into 20 basins. The basins have been aligned by the two (2) WWTP lift stations to which they are conveyed, the Maitland and 9th 11- 1261.411 Page 1 -4 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan and Washington Lift Stations. The immediate area associated with the Tri- Cities Airport runways have not been included within a specific basin since there is no current or projected wastewater flow in this area. These basins are shown on Figure 1 -3 at the end of this Section and are described below: East Sewer Basins The basins that are on the east side of the City's collection system that flow into the Maitland Lift Station are summarized below. South East Pasco Trunk The South East Pasco Trunk Basin service area includes the area generally along East Ainsworth Street continuing southeast along the Burlington Northern Railroad and the Columbia River. The basin covers 1.97 square miles and is zoned Commercial and Industrial. The South East Pasco Trunk Basin includes the single sewer trunk line serving the southeastern portion of the City. The collection system is comprised of a 30 -inch diameter trunk sewer that collects flows from the Road 40 East Interceptor, conveying sewer flows to the Maitland Lift Station. Road 40 East Interceptor The Road 40 East Interceptor Basin service area includes the mostly undeveloped industrial areas north and south of I -182 within the City's UGA. North of I -182 it is bounded on the west by the Columbia East Industrial Area, on the northeast by the Dietrich Road and on the southeast by the Franklin Substation. It covers 2.47 square miles and is zoned Residential, Commercial and Industrial. A 21 -inch diameter interceptor sewer in Road 40 East extends north from the SE Pasco Trunk to 1- 182 and East Lewis Place, and will be extended to cross under 1 -182 in the future. The Commercial /Kahlotus Highway Lift Station will discharge into this interceptor that is collecting sewer flows from the area north of I -182 and the East Service Area Basin. Sacajawea Park Road Interceptor The Sacajawea Park Road Interceptor Basin service area includes the area generally along Sacajawea Park Road to the Snake River. It covers 1.79 square miles and is zoned Residential and Industrial. This basin has a limited collection system, but joins with the Road 40 East Interceptor Basin at Sacajawea Park Road and Road 40 East. Through an inter -local agreement, the City has agreed to accept sewage flow from the Port of Walla Walla via a force main across the Snake River. This would tie into an existing manhole at Road 40 East, north of Sacajawea Park Road. 11- 1261,411 Page 1 -5 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan PSC5 The PSC5 Basin service area includes the area south of I -182 on both sides of Oregon Avenue, as well as north of Highway 12 and east of SR 395. This basin extends to East Lewis Street where it joins with PSC6 at North Main Avenue and East Lewis Street. It covers 1.22 square miles and is zoned Residential, Commercial and Industrial. A 12 -inch diameter sewer serves the Columbia East Industrial Area north of I -182 and east of SR 395. All collector sewers flow south to the east side of the Burlington Northern Railroad mainline tracks across from East Sylvester Street where they join with an 18 -inch diameter interceptor on the east side of the Burlington Northern Railroad from the Hillsboro Interceptor Basin. It continues on as a 20 -inch diameter interceptor until joining with PSC6 Basin at North Main Avenue and East Lewis Street. PSC6 The PSC6 Basin service area includes a region south of 1 -182, which is generally bounded on the east side by South Wehe Avenue and on the west by Road 40 East. The basin's southern edge is East "A" Street. There is varied development, which includes residential and commercial. areas. It covers 1.82 square miles and is zoned Residential, Commercial and Industrial. The 6 -inch to I0 -inch sewer collection system flows to the southwest where it is collected in the 21 -inch diameter interceptor that joins with PSC5 Basin and flows south to the Maitland Lift Station. The Pennie Avenue Lift Station serves a low area in the eastern portion of PSC6 Basin, along Pennie Avenue from East Adelia Street to East Alvina Street. Hillsboro Interceptor The Hillsboro Interceptor Basin serves the northeast corner of the City's collection system. It covers 4.34 square miles and is zoned Commercial and Industrial. This area includes the Pasco Processing Center (PPQ situated on the west of SR 395 and north of I -182. The food processors in this area utilize the Reuse Facility to manage process wastewater flows. The basin area north of I -182 is served by an 18 -inch diameter interceptor sewer that extends to East Hillsboro Road. A 15 -inch sewer extends north along North Industrial Way to West Foster Wells Road. South of I -182 the 18 -inch diameter interceptor runs down the east side of the Burlington Northern Railroad mainline tracks and joins with PSC5 Basin across from East Sylvester Street. East Service Area The East Service Area Basin is a future area outside the eastern edge of the city limits, including a portion outside of the City's UGA. It covers 2.58 square miles and is zoned Industrial. To serve this area the City is planning to construct a new lift station that would discharge into the Sacajawea Park Road Interceptor, which flows to the Maitland Lift Station. 11- 1261.411 Page 1 -6 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan NE Commercial Area The NE Commercial Area Basin is a future area on the eastern edge of the City limits including a portion outside of the City's UGA. It covers 2.07 square miles and is zoned Industrial. To serve this area the City is planning to construct a future lift station, once development occurs, that will pump to Commercial Avenue within PSC5, which flows to the Maitland Lift Station. West Sewer Basins The basins that are on the west side of the City's collection system that flow into the 9th and Washington Lift Station are summarized below. PRL The PRL Basin serves the Pearl Street area of the City. This is a low area south of I -182 bounded generally by Court Street on the south, 22nd Avenue on the west, and 10th Avenue on the east. The development is mostly residential except for the commercial areas along Court Street. It covers 0.53 square miles and is zoned Residential and Commercial. The basin is comprised of two (2) smaller sub - basins that collect wastewater through a collection of 12 -inch sewers. The area west of North 15th Avenue is conveyed to the Pearl Street Lift Station located at Pearl Street and 14th Avenue. That lift station pumps the wastewater to a manhole located 400 feet to the east. From there, the wastewater flows down gradient on 11th, 10th and 8th Avenues to the PSC4 Basin. PSCI The PSCI Basin serves the area along Road 36 that starts at the Desert Heights Subdivision and runs south along Road 36 to the trunk sewer crossing under the north end of the Blue Bridge. The northern part of this basin is bounded generally by the Tri- Cities Airport, SR- 395 on the east and Yuma Drive on the west, with Burden Boulevard on the north. The southern boundary is the Columbia River. It covers 2.77 square miles and is zoned Residential, Commercial and Industrial. The area of the basin north of I -182 is served by 8 -inch and I0 -inch sewer lines, which convey wastewater to the southeast toward Road 36. There is a low area in the northeast part of the basin, which is served by the Road 36 and Burden Lift Station. The lift station conveys wastewater through 1,350 feet of 6 -inch force main along Road 36 to a manhole 217 feet south of Tusayan Drive where it enters the gravity sewer. The south portion of the basin is served by a 12 -inch sewer along Road 36 where it joins with 36 -inch Trunk Sewer Line under the north side of the Blue Bridge. 11- 1261.411 Page 1 -7 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan PSC2 The PSC2 Basin serves the Terminal Building at the Tri- Cities Airport, Columbia Basin College, Sun Willows Golf Course, The Village at Sun Willows and the hotels near the Tri- Cities Airport, all located north of I -182. South of I -182 this basin serves the businesses, homes and apartments on the east side of SR 395 to the Columbia River. This service area is generally bounded by SR -395 on the west and 22nd Avenue on the east. It covers 1.64 square miles and is zoned Residential, Commercial and Industrial. On the east side of SR -395 the basin serves the Tri- Cities Airport by a 12 -inch sewer line that runs south along North 24th Avenue. This part of the basin is comprised of 8 -inch and 10 -inch sewer lines, which convey wastewater to the 12 -inch pipe in North 24th Avenue. The 12 -inch sewer line flows from North 24th Avenue along West Sylvester Street to North 28th Avenue and then south through a 15 -inch sewer line to the 36 -inch Trunk Line at South 28th Avenue and Homestead Drive. PSC3 The PSC3 Basin serves the area south of Court Street and between 15th and 20th Avenues to the Columbia River. It is mostly residential with commercial areas. It covers 0.93 square miles and is zoned Residential, Commercial and Industrial. The basin is comprised of 8 -inch to 12 -inch sewers, which convey wastewater to the south and into the 36 -inch Trunk Line and to the 9th and Washington Lift Station. PSC4 The PSC4 Basin serves the downtown core from Tri -City Airport industrial area to the Columbia River. The basin follows along the west side of the Burlington Northern Railroad mainline tracks and is generally bounded on the west by 10th Avenue. There is varied development, which includes industrial, residential with commercial areas through the downtown area. It covers 2.29 square miles and is zoned Residential, Commercial and Industrial. The Tri-City Airport industrial area is served by an 18 -inch sewer line, which flows to the Navy Base Lift Station. This drainage area is collected at the Navy Base Lift Station and pumped south along 5th Avenue to a point just north of I -182. A 15 -inch diameter interceptor sewer is installed under 1 -182 and runs south on 5th Avenue to the alley between Octave and Henry Streets; in this area the line serves customers between the railroad tracks and 7th Avenue. At the alley between Octave and Henry Streets, the pipe is routed west to 8th Avenue. At this point, flow from the PRL Basin enters the 15 -inch interceptor. This interceptor sewer continues south on 8th Avenue to West Sylvester Street where it jogs over to 7th Avenue and flows south on 7th Avenue to the alley between West Clark Street and West Lewis Street; serving a large sector of the downtown business district. The size increases to 18 -inch diameter interceptor at West Shoshone Street, flowing east to 5th Avenue and south on 5th Avenue to West "A" Street. At the 5th Avenue and West "A" 11- 1261,411 Page 1 -8 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan Street intersection, a 24 -inch diameter trunk sewer continues south along 5th Avenue to West Washington Street and then east to the 9th & Washington Lift Station. Broadmoor Boulevard Interceptor The Broadmoor Boulevard Interceptor Basin service area is west of Broadmoor Boulevard and is bounded by the City limits on the north and Road 84 on the east. The basin's southern edge is Welsh and Massy Drives. The development varies between residential and commercial. It covers 1.81 square miles and is zoned Residential and Commercial. The Broadmoor Boulevard Interceptor Basin joins with the Road 68 Interceptor Basin at Road 84 and Massy Drive. The collection system north of 1 -182 is comprised of 8 -inch to 15 -inch sewer line that feed into the 18 -inch diameter interceptor that crosses under I -182. The 18 -inch diameter interceptor is routed westward to Broadmoor Boulevard. The manhole at the intersection of Broadmoor Boulevard and Chapel Hill Boulevard includes a diversion that allows for flows to be directed toward the West Pasco Trunk Basin. At this time, flows are not diverted and pass through the manhole to the south where it goes into the 24 -inch diameter trunk sewer on Welsh Drive. Flow continues to the southeast where it joins with the Road 68 Interceptor Basin and then the Road 84 Interceptor Basin. Road 44 Interceptor The Road 44 Interceptor Basin service area is generally along Road 44, north and south of I- 182. North of 1 -182 the service area includes mostly residential development and is bounded on the west by Road 60 and Road 52. On the east, the boundary follows Road 44, except where PSC1 Basin extends westward to Yuma Drive, from Desert Drive to Burden Boulevard. It covers 2.38 square miles and is zoned Low- Density Residential and Commercial. The Road 44 Interceptor is a 21 -inch diameter interceptor that extends under the Franklin County Irrigation District (FCID) irrigation canal at 1 -182 to collect wastewater in the northern part of the basin comprised of 8 -inch sewer line. South of 1 -182 the 21 -inch interceptor is joined with flow from the Road 84 interceptor, which also includes flows from Road 100 Interceptor and Road 68 Interceptor. The 21 -inch diameter interceptor joins with the line connected to the 36 -inch West Pasco Trunk Sewer Line at West Sylvester Street. Road 68 Interceptor The Road 68 Interceptor Basin service area is generally along Road 68, north of I -182 and is bounded on the east by Road 60 and on the west by Road 84. The service area is mostly commercial development with some mixed residential. It covers 2.63 square miles and is zoned Residential and Commercial. The Three Rivers Lift Station is located in Three Rivers Park. The lift station uses an 8 -inch force main while pumping a distance of approximately 2,150 feet to a gravity manhole at the intersection of Three Rivers Drive and Westport Lane. The sewer then flows west to 11- 1261.411 Page 1 -9 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan Convention Drive and then to the south in Convention Drive. The Road 68 Interceptor Basin collects sewer flows through a network of 6 -inch to 15 -inch line and is served by a 15 -inch diameter interceptor that crosses under I -182. The sewer then crosses through a field and joins with the Road 84 Interceptor east of Road 84 near the FCID irrigation canal. Road 84 Interceptor The Road 84 Interceptor Basin service area is generally along West Argent Road, from Road 90 to Road 60, and south of the FCID irrigation canal and I -182. It covers 1.14 square miles and is zoned Residential, Commercial and Industrial. The Road 84 Interceptor Basin collects sewer in the Road 84 and West Argent Road area via the Road 84 and Argent Lift Station. The lift station discharges to a manhole at the intersection of West Argent Road and Road 72 to the 24-inch diameter trunk sewer. It joins with wastewater flows from the Broadmoor Boulevard Interceptor and Road 68 Interceptor Basins. The 24 -inch diameter trunk sewer flows to the east along West Argent Road and joins with the Road 44 Interceptor Basin. West Pasco Trunk The West Pasco Trunk Basin service area is generally along West Sylvester Street starting at Road 44 and continues west along the Columbia River through the River Shore Estates subdivision. It covers 5.52 square miles and is zoned Residential, and Commercial. The West Pasco Trunk Basin consists primarily of 24 -inch and 36 -inch diameter sewer trunk. The remaining collection system is comprised of 8 -, 10- and 12 -inch sewer lines. The basin collection system size is limited by the Riverview Area, which is in Franklin County and is currently surrounded by, but outside of, the current City limits. The Riverview Area is 3.73 square miles, see Figure 1 -3 at the end of this Section for location and extent. Currently, the majority of homes in the Riverview Area have water provided by the City's system. Most homes in this area are sewered by septic tank and drain field systems. This area is currently included in the City's UGA. North Court Street The North Court Street Basin is a future service area on the western edge of the City's UGA, between the existing City limits and the UGA. It covers 3.27 square miles and is zoned Low - Density Residential, Mixed Residential and Mixed Residential /Commercial. This is a future service area that is planned for development between Convention Drive and the Columbia River. Northwest Service Area The Northwest Service Area Basin is outside the northwest edge of the City's UGA, though it is planned for inclusion in the 20 -year planning evaluation. It covers 5.40 square miles and is zoned Low - Density Residential. 11- 1261.411 Page 1 -10 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan Summary of Collection System Facilities The City's wastewater collection system consists primarily of manholes, gravity pipelines, lift stations and force mains that convey wastewater to the WWTP. For the most part, the gravity pipelines convey wastewater from the residential and commercial areas and route them to interceptors and large sewer trunks, which drain to the WWTP. Due to the varied topography in the City, several localized and regional lift stations are required to convey sewage to the WWTP. The City's two (2) primary lift stations (Maitland and 9th and Washington) are located just outside the WWTP and convey sewage directly to the plant. Gravity Piping Collection System The collection system is comprised of pipes between 6 and 36 inches in diameter. The oldest portion of the collection system, which is 50 to 100 years old, is in the downtown area and comprised of clay pipe and brick manholes that have not been replaced. As the collection system has expanded over the past 20 to 30 years, the newer piping is PVC with concrete manholes for pipes 18 inches and smaller. The larger trunk sewer pipes are typically concrete with concrete manholes. Based on information provided by the City, Table 1 -2 surnmarizes the collection system's gravity pipe. The approximate percentage of the different material types is over 60 percent polyvinyl chloride (PVC), over 30 percent concrete, seven (7) percent clay and the rest being a small portion of asbestos cement (AC) and ductile iron (DI). Table 1 -2 Gravity Pipe Diameter Cinch) Total Length Holes Percent of Total Lengt h 8 and smaller 169 69% 10 20 8.1% 12 20 8.3 % 15 8.3 3.4% 16 0.07 0.03% 18 9.0 3.7% 20 012 0.09 % 21 2.2 0.91% 24 5.9 2.4% 30 4.2 1.7% 36 5.0 2.1 % Total 243.3 100% 11- 1261.411 Page 1 -11 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan Lift Stations and Force Mains The City's wastewater collection system currently utilizes 10 lift stations of various sizes. The majority of stations are submersible type stations with two (2) pumps for redundancy. Two (2) additional lift stations have been included in the summary, one (1) is temporary and the second came online in 2013 during the development of this Plan. Figure 1 -2 at the end of this Section shows the lift station locations throughout the system, which are summarized in Table 1 -3. The pumping capacity; total and firm, for each of the lift stations is also shown in Table 1 -3. 11- 1261.411 Page 1 -12 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan Table 1 -3 City of Pasco Lift Station Summary Temporary Lift Station 2 Lift Station came online in 2013 and wet well size is for planned build -out s Flow rate based on lift station run titne evaluation Firm capacity represents the maximum pumping capacity of the pumping station with the largest pump out of service. 11- 1261.411 Page 1 -13 City of Pasco January 2014 Wastewater System Description Comprehensive Sewer Plan Pumping Wet Well No. of Total Capacity Level Alarm Standby Power Name Type (diameter) Pumps Horsepower m Control System Capability � e Yp Total Firma Airport Submersible 72 -inch 2 15 3003 150 Dialer 35 kW Genset tPr sdurer Road 36 and Submersible 72 -inch 2 40 750 375 Float Dialer 60 kW Genset Burden Navy Base Submersible 96 -inch 2 30 500 250 Pressure Dialer 60 kW Genset transducer Pearl Street Dry Pit 192 -inch 2 20 1,600 800 Bubbler Dialer Portable (Split) Pennie Avenue Submersible 60 -inch 2 4 170 85 Float Dialer 20 kW Genset Maitland Dry Pit (2) 144 -inch 3 225 7,275 4,850 Pressure Dialer Dual Feed from Avenue transducer PUD and Portable 9th and Submersible/ 204 -inch 4 338 10,400 6,800 Pressure Dialer 300 kW Genset Washin on Dr Pit transducer Road and Pressure Submersible 72 -inch 2 15 880 440 Dialer 60 kW Genset Argent transducer Rivershore Submersible 72 -inch 2 10 880 440 Pressure Dialer 25 kW Genset Estates transducer Three Rivers Submersible 96 -inch 2 30 1,200 600 Pressure Dialer 80 kW Genset transducer Capital Avenue Submersible 48 -inch 1 N/A 50 0 Manual _ Manual Portable Commercial/ Kahlotus2 Submersible (2) 144 -inch 3 71 1,959 1,086 Pressure Dialer Portable transducer Temporary Lift Station 2 Lift Station came online in 2013 and wet well size is for planned build -out s Flow rate based on lift station run titne evaluation Firm capacity represents the maximum pumping capacity of the pumping station with the largest pump out of service. 11- 1261.411 Page 1 -13 City of Pasco January 2014 Wastewater System Description Comprehensive Sewer Plan The two (2) main lift stations, Maitland and 9th and Washington, convey all wastewater flows to the City's WWTP. The Maitland Lift Station serves the eastern side of the City and the 9th and Washington Lift Station serves the western part of the City. The remaining lift stations serve localized low areas that cannot easily be conveyed by gravity. The Capital Avenue Lift Station is a temporary lift station that will be expanded into a permanent lift station once development occurs north along Capital Avenue. Currently, the City maintains a single pump to drain a manhole as surface water accumulates, there are no service connections to this portion of the system at this time. The Commercial /Kahlotus Lift Station came online in 2013 and is for serving the industrial area northeast of the City. Table 1 -4 summarizes the force mains of substantial length and their contributory lift stations. Table 1 -4 Force Mains Contributing Force fain Farce Main Lift Station Diameter inch Length feet Airport 8 650 Road 36 and Burden 6 1.350 Navy Base 12 1,609 Pearl Street 8 527 Pennie Avenue 8 466 Maitland 24 2,119 9th and Washington 20 4,542 Road 84 and Argent 6 4,015 Rivershore 6 1,259 Three Rivers 8 2,140 Capital Avenue 4 and 8 1,343 Commercial /K 4 and 8 5.600 Collection System Performance The performance history of the collection system has been good. The Road 36 and Burden Lift Station, as well as the Pearl Street Lift Station, have experienced high levels due to an auto dialer failure and the lack of a high -level alarm. These conditions have been corrected and the events did not result in an overflow condition at manholes or customer homes. 114261.411 Page 1 -14 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan Interties and Services Agreements Reuse Facility The City and the Port of Pasco, with support from the Tri- Cities Industrial Development Council, launched the Pasco Initiative in the early 1990s. The City acquired 1,600 acres of land northeast of Pasco, 1,200 acres of which are under center pivot irrigation, for disposal of treated reuse waste from food processors. The City has owned and operated the Reuse Facility and collection system since 1995. It was designed to manage process wastewater from a variety of vegetable processing facilities. It currently receives process wastewater from four (4) processors; no sanitary wastewater is discharged into the system. Three (3) processors (Pasco Processing, Twin City Foods and Reser's Foods) are located within the PPC that is just north of the City and along SR 395, and one (1) processor (Bybee Foods) is located on the eastern boundary on Commercial Avenue. The City provides fresh water to all of the facilities for processing. Ecology currently permits all National Pollutant Discharge Elimination System (NPDES) permitted discharges to the City's Reuse Facility and each user pretreats the wastewater prior to discharging to the City's system (e.g., screening; pH adjustment). The reuse collection system includes the centrally located Foster Wells Lift Station where wastewater is screened and then pumped approximately two (2) miles east to the storage pond/irrigation pump site. The Foster Wells Lift Station includes an emergency overflow to the City wastewater collection system. This overflow has not been used since it was constructed. Additionally, wastewater from Bybee Foods is screened and pH adjusted on- site, and then pumped directly to the City's storage pond/pump site. During the growing season, the reuse wastewater effluent is directed to the irrigation pump station, which delivers it to the center -pivot sprayfield system. Wastewater flow in excess of the crops requirement is diverted to a lined and aerated five (5) MG equalization basin. During the winter, the entire wastewater stream from all of the users is sent to a lined and aerated 115 MG storage pond. Wastewater in the winter storage pond is blended with the main waste stream during the growing season until the pond is completely emptied. Supplemental fresh water for irrigation is provided by 11 wells. The facility operator controls the amount of fresh water blended with the process wastewater. Backflow preventers have been installed at each well to prevent contamination by the wastewater. Port of Walla Walla The City has entered into an agreement with the Port of Walla Walla to accept 360,000 gallons per day of wastewater. The Port of Walla Walla is designing a force main that will be installed via horizontal directional drill under the Snake River and connect into the City's collection system in Road 40 East. At this point, wastewater will flow by gravity into the City's collection system. 11- 1261.411 Page 1 -15 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan WWTP Influent Characterization Historical flow and load data from years 2006 through 2011 were used to establish the existing influent wastewater characteristics (flows, loadings and peaking factors). In January 2009, the rotary screen thickener filtrate was rerouted to the Maitland Lift Station to eliminate foam buildup in the solids handling building. This caused an increase in the observed influent constituent concentrations, but the increase is not due to altered wastewater from the service area. For this reason influent characterizations are shown in two (2) tables, 1 -5 and 1 -6. The annual average values are the typical daily loads that the plant is processing. The maximum month value is the highest monthly average. The peak day value is the highest daily average in the year. The peak hour value is the highest value of hourly averages. The peak instantaneous is the highest recorded value during the dataset. The average annual, maximum month, peak day, peak hour and peak instantaneous values are measures of the variability of the wastewater characteristics. By considering the variability over different time measures, the impacts on various unit processes in the plant can be better characterized. Table 1 -5 2006 to 2008 Influent Wastewater Characterization Load Units Annual Average Maximum Month Peak Day Flow m d 3.22 3.62 4.01 Flow Peaking Factor -- 1 1.12 1.25 BOD' lb/day 6,344 8,041 10,050 m 1L 236 266 301 TSSt lb /day 6,397 8,022 22,306 m 1L 238 266 667 Ammonia lb/day 847 995 1,146 m 1L 32 33 34 Total Phosphorus lb/day NA NA NA m 1L NA NA NA Temperature - High °C 19.6 25.3 26.1 Temperature - Lbw °C 19.6 14.6 12.8 I Concentration (mg /L) is a calculated value based on load (Ili /day) and flow 2 Phosphorus levels not measured until July 2010 11- 1261.411 Page 1 -16 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan Table 1 -6 2009 to 2011 Influent Wastewater Characterization Load Units Annual Average Maximum Month Peak Day Peak. Hour Peak Instantaneous Flow mgd 3.83 4.27 5.15 7.27' 8.68' Flow Peaking Factor -- 1 1.11 1.34 1.90 2.27 BOD2 lb /day 8,820 10,163 13,364 -- -- mg /L 276 285 311 -- TS S2 lb /day 9,310 11,724 27,669 -- -- mg /L 291 329 644 -- -- Ammonia 2 lb /day 1,535 1,930 2,617 -- -- mg /L 48 54 61 -- -- Total Phosphorus 2,3 lb/day 266 306 324 -- mg /L 8.3 8.6 7.5 -- -- Temperature - High oC 19.8 25.0 26.1 -- -- Temperature — Low oC 19.8 14.9 I i I Based on data frown December 2010 to October 2011 2 Concentration (mg /L) is a calculated value based on load (lb/dav) and flow 3 Phosphorus levels not measured until July 2010 Wastewater Treatment Facilities Overview The City's collected wastewater is treated in a Class III WWTP facility (WAC 173 - 230 -140; Classification of Wastewater Treatment Plant) that has been built in stages over the past 60 years. After treatment, the effluent from the plant is discharged to the Lake Wallula reach of the Columbia River. In 1954, the City constructed its first wastewater treatment facility. This primary treatment facility included a horizontal grit channel, primary clarification, an effluent parshall flume, and an outfall pipeline to the Columbia River. Solids collected in the primary clarifier were pumped to a sludge digestion complex with one primary and one secondary digester. The digested sludge was conveyed to sludge drying beds for dewatering and storage prior to disposal. Secondary treatment was added in the early 1970s with the addition of a trickling filter, associated clarifier and chlorine disinfection facilities. The 1970 modifications increased the WWTP's design population equivalent to 30,000. 11- 1261.411 Page 1 -17 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan In the mid to late 1990s, the WWTP's design capacity was increased with the addition of a new headworks building (screenings and grit removal), activated sludge basins, two (2) secondary clarifiers, a new primary digester and UV disinfection. At the time of the design of these facilities, the City's outfall was an end of pipe discharge and the improvements that were designed based on the presumed need to nitrify to avoid the detrimental effects from ammonia discharges to the aquatic biota in the Columbia River. However, a subsequent installation of a multi -port diffuser and extension of the outfall location in the river improved the mixing of the effluent and negated the need for an effluent ammonia limit in the City's discharge permit. Additional capital projects completed at the WWTP since the 1990 upgrades include new drying beds, digested solids thickening facilities, a dewatered solids storage building, a second primary digester and an upgrade of the UV modules. Most recently (2012), the City completed upgrades to the aeration basin air system (new blowers and controls) and the headworks building (new screens and washer /compactors). Presently, the City is in the process of self installing additional screw presses to increase digested sludge dewatering capacity. The WWTP is presently operated to meet the City's NPDES permit while also minimizing nitrification in the aeration basins in order to reduce the plant's energy consumption. Treatment Processes The existing WWTP processes can be grouped into three (3) main treatment categories that serve specific purposes: primary treatment, secondary treatment and solids treatment. All of the treatment categories involve multiple unit processes that carry out distinct functions necessary for the treatment of the City's raw wastewater. The following paragraphs provide a brief description of the function of each treatment category and its associated unit processes. Figure 1 -5 is a schematic representation of the various unit processes that make up the City's existing WWTP. Primary Treatment The role of primary treatment is to remove solids from the waste stream through primarily physical processes. Primary treatment at the WWTP consists of screening, grit removal and primary clarification. Headworks Facility The headworks facility houses three (3) 36 -inch wide mechanical influent screens, a screenings conveyance system, two (2) washer /compactor units and a dumpster system for screening disposal. During normal operation, all the flow is directed to the two (2) newest mechanical screens. When one (1) of these perforated plate screens is offline or not functioning properly, all or some of the wastewater can be bypassed to a third reciprocating rake bar screen. The collected screenings are then washed and the compactor auger transfers the solids from the screen room to dumpsters. Grit, rags and screenings are disposed of as solid waste at the local landfill. 11- 1261.411 Page 1 -18 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan The two (2) new 8- milimeter perforated plate mechanical screens, each have a stated peak flow rating of 10.3 mgd. 11- 1261.411 Page 1 -19 City of Pasco May 2014 Wastewater System Description Comprehensive Sewer Plan Figure 1 -5 City of Pasco WWTP Schematic Sn._, l`err adiate C.Cr -r�P, Ir " ✓� E , _.Qe" -, g_ L I I I Seco -dcr5 Cmr4jer f----- -- - - - -- N-------- -- ------- -- - - - - -J r r, l (3) I .... ---------------------- 11- 1261.411 May 2014 Bypass B/'css I I I 1 I I I (:3 } 14► I * Pnlc , Screen 1 nir' er rr1 - - -, I I , I 1j1 I � { i 0 ;�I �► ` i '� � i L---- - - - --L -- — =1 — = -- - - - -_ -- 4n CE: I l �z�. °•t1 1 a -r. Se :9ge or, JJ °rimory S dgtl iquo• - c:katcd S'_ c ob�c ^�qe sticn S�udge Storage ` ^� rYGSLENat °r C'!S�r•�r9? ty Ihssi. r. : F.r f'wtrtt`nn p4ye s:ed S�udge Page 1 -20 Wastewater Treatment Capacity Assessment City of Pasco Comprehensive Sewer Plan Grit Removal After screening, the wastewater is conveyed to two (2) 10 -foot diameter grit chambers, each rated for up to 7.2 mgd of peak flow. Grit is removed in these chambers through the creation of a vortex flow pattern that allows the grit to settle out while the effluent exits at the top. Removal of sand and grit from the wastewater serves to protect downstream equipment from accelerated wear and prevent reduced digestion capacity due to grit accumulation. Primary Clarifier From the grit chambers, wastewater flows into two (2) 148 -foot long by 18.5 -foot wide rectangular primary clarifiers that are approximately eight (8) feet deep. The primary clarifier is intended to settle, concentrate and remove organic solids from the waste flow. Because biochemical oxygen demand (BOD) in wastewater exists in both soluble and particulate form, a substantial amount of BOD can be removed during this process. This reduction in total suspended solids (TSS) and BOD decreases the load to (and increases the capacity of) the secondary treatment processes. The collected primary clarifier solids (sludge) are pumped directly to the digesters along with the waste solids produced in the secondary treatment process. From the primary clarifiers, primary effluent flows through a junction box that splits flow between the trickling filter and the aeration basins for the start of secondary treatment. Secondary Treatment The secondary treatment process is the central part of the treatment facility and the most complex. Secondary treatment is defined by the degree of treatment achieved, rather than the actual processes employed. The role of secondary treatment is to remove dissolved organics, nutrients, solids and pathogens from the wastewater stream using biological, physical and chemical means. The complexity of the process arises from the many different variables and parameters that separately, and jointly, affect system operation and the final effluent quality. The secondary process employed at the Pasco WWTP incorporates a trickling filter, intermediate clarifier, aeration basins, secondary clarifiers and UV disinfection system. Within the trickling filter and the aeration basins, microorganisms remove organic substrate from the wastewater. These microorganisms require oxygen to breakdown the organics within wastewater and grow new cell mass. When the majority of the BOD has been converted into cell mass, the wastewater flows to the secondary clarifiers for the removal of these biological solids from the liquid waste stream. Finally, the liquid is disinfected using UV radiation prior to discharge to the Columbia River. 11- 1261.411 Page 1 -21 City of Pasco January 2014 Wastewater System Description Comprehensive Sewer Plan Trickling Filter The trickling filter is a 120 -foot diameter, 8 -foot deep, fixed -film biological reactor using rock as the substrate for biomass growth. A portion of the primary clarifier effluent and recycled trickling filter underflow is continuously distributed on the trickling filter by a hydraulically driven rotary distributor. Treatment occurs as the wastewater flows over the film of biomass on the rock. The trickling filter reduces BOD through the growth of the bacteria in the film. The bacterial biofilm grows on the rock, ultimately sloughs off and then regrows again. Intermediate Clarifier The 85 -foot diameter circular intermediate clarifier removes solids from the trickling filter effluent. The intermediate clarifier effluent mixes with the primary clarifier effluent that is bypassed around the trickling filter before being treated further in the aeration basins. The solids removed in the intermediate clarifiers are pumped back to the front of the plant. Aeration Basins Within the aeration basins, microorganisms grow in suspension and metabolize the BOD in the wastewater. The mass of microorganisms grown in suspension is typically called mixed liquor. The City's existing WWTP has two (2) aeration basins that follow the primary clarifier and trickling filter and are each 50 feet wide, 100 feet long and 16 feet deep with a total combined volume of 1.2 MG. The first nine (9) feet of each aeration basin is described in the original design drawings as a selector zone. This zone and the subsequent three (3) aeration zones per basin are provided with a grid of submerged 9 -inch membrane disc fine bubble diffusers. Presently, only one (1) aeration basin is typically used at a time. The diffusers are supplied air by blowers located in an adjacent blower building. The City recently upgraded these facilities to improve energy efficiency and operations. Two (2) new turbo blowers were added to the existing multi -stage centrifugal blowers to improve the aeration system efficiency and turn-down. The two (2) new turbo blowers are each capable of delivering between 1,925 to 3,850 standard cubic feet per minute of air. In addition to the modifications to the blower building, the City installed modulating air zone control valves and dissolved oxygen (DO) monitoring equipment to allow automated and optimized DO control in the basins. As part of this work, the existing diffusers in the basins will be provided with new membranes and retainer rings. When the aeration basins are operated in a mode that also removes ammonia (nitrification), the pH of the wastewater can be adversely impacted. To address this, a lime silo and feed system were installed at part of the 1990 improvements. When needed, lime is added downstream of the primary clarifier for pH control. 11- 1261.411 Page 1 -22 City of Pasco May 2014 Wastewater Treatment Capacity Assessment Comprehensive Sewer Plan Secondary Clarifiers Two (2) 95 -foot diameter, 14 -foot deep circular secondary clarifiers are used to separate the microorganisms, typically referred to as activated sludge or biosolids, from the treated wastewater. Presently, only one (1) secondary clarifier at a time is typically used. Both clarifiers contain center feed and suction withdrawal mechanisms and are equipped with an aluminum chlorohydrate feed system used to improve settling and solids removal, when needed_ The majority of the settled activated sludge is returned to the aeration basin to maintain the microorganism population required in the aeration basins. The rate of this return flow, the return activated sludge, is adjusted by City operations staff on a daily and seasonal basis in order to keep hydraulic residence time in the clarifier in an optimal range. The excess activated sludge, waste activated sludge (WAS), is conveyed to the dissolved air flotation thickener (DAFT) prior to digestion and disposal. UV Disinfection UV radiation is used to disinfect the treated wastewater prior to discharge to the Columbia River. The UV disinfection system installed in 1998 has since been upgraded to address system performance problems. The existing disinfection system is comprised of two (2) UV channels with a total of 12 vertical lamp modules designed to treat a maximum flow of 23.2 mgd. The system measures flow rate and transmittance to determine the number of UV modules that must be on. Since the upgrades, wastewater effluent measurements for fecal coliform count have been consistently within permit limits. Effluent Flume A flow measurement manhole is provided downstream of the UV disinfection system. This facility is used for plant flow reporting and is equipped with a 2 -foot Parshall flume and ultrasonic flow measurement device connected to the plant SCADA system. Discharge Outfall The effluent is discharged from the facility via a 24 -inch multiport diffuser outfall into the Columbia River. Leaving the plant site, the outfall follows a southerly line, defined by Gray Street, continuing approximately 900 feet offshore from the north bank and terminates at a diffuser that is approximately 30 feet below the water surface. The outfall has three (3) fl- inch diameter diffuser ports and is 50 feet long. At this location the river flows west to east southeast. 11- 1261.411 Page 1 -23 City of Pasco May 2014 Wastewater Treatment Capacity Assessment Comprehensive Sewer Plan Solids Treatment The role of the solids treatment systems are to thicken, treat and dispose of the biological and waste solids produced at a WWTP. A summary of the unit processes used by the City for this function are described below Dissolved Air Flotation Thickener WAS from the secondary clarifiers is pumped to a 10 -foot diameter DAFT prior to digestion in the anaerobic digesters. The WAS solids coming from the secondary clarifiers are thickened from a concentration of 0.5 to one (1) percent to a solids content ranging from two (2) percent to four (4) percent. With only one (1) DAFT unit, this system has no redundancy and the unthickened WAS can be bypassed directly to the digesters. Anaerobic Digestion In this treatment process, the organic material in the solids is digested and converted biologically under anaerobic conditions into methane and carbon dioxide gas (digester gas). The digester gas is then collected and a portion is directed to the boiler to heat the digester to approximately 37°C (99 °F), which is in the mesophilic temperature range. Any unused gas is flared off to atmosphere. The benefits of anaerobic solids digestion are the reduced volume of dewatered biosolids when compared to alternative digestion processes, potential use of methane for energy production, and a stabilized end product. Reduction in solids leads to decreased sludge handling costs. A stabilized product with reduced pathogen levels can be disposed of at properly permitted land application facilities or used in other beneficial ways that might reduce hauling costs. The City's anaerobic digestion system has been added to, and modified, several times since initial construction. Currently, there are two (2) 66 -foot diameter primary anaerobic digesters that are actively used to treat the solids. The two (2) original 42 -foot diameter anaerobic digesters (19 54) have been modified and no longer provide anaerobic treatment. One (1) is used for digested sludge storage, and the second has been modified for gas storage. To accommodate gas storage, the original roof has been replaced with a two (2) membrane system. The outer member is held in place by cables and remains in a fixed position. The inner membrane moves with the digested gas and provides variable volume storage. Rotary Screen Thickener The digested sludge is thickened in the rotary screen thickener from a concentration of approximately two (2) percent to a range of eight (S) to nine (9) percent. Prior to thickening, a polymer is added to improve flocculation and thickening. The conditioned sludge flows to the rotating screen where flocculated solids are separated from the water. 11- 1261.411 Page 1 -24 City of Pasco May 2014 Wastewater Treatment Capacity Assessment Comprehensive Sewer Plan Sludge Drying and Disposal Digested sludge (thickened and non - thickened) is spread, dewatered and stored in onsite sludge drying beds. Drying beds are individual cells with an asphalt floor and a concrete containment wall around the perimeter. Sludge is pumped to the individual beds and then rotated on a regular basis to ensure consistent drying. These beds provide just over four (4) acres of available space for dewatering digested sludge to high a solids concentrations prior to disposal. Dry solids are moved into the WWTP sludge storage building and trucked on an annual basis to local private properties permitted for land application under a permit issued by Ecology's Waste 2 Resources Program. The permit includes a condition requiring the City to properly handle residual solids so that no leachate enters ground or surface water. NPDES Discharge Permit The Federal Clean Water Act requires municipal facilities that discharge treated wastewater into waters of the United States to obtain a NPDES permit. The permit establishes maximum pollutant concentrations and loads allowed in the effluent discharge stream. The Pasco WWTP is regulated by NPDES Permit WA- 004496 -2, which allows discharge of treated wastewater to the Columbia River. Table 1 -7 summarizes the monthly effluent permit limitations, but does not list other monitoring requirements included in the permit. The current 6 -year permit cycle runs to June 30, 2015, Table 1 -7 NPDES Permit Limits and Requirements Parameter Average Monthly Limits Average Weekly Limits Comments BOD 1,131 lbs /day 1,6961bs /clay 30 mg/1 45 mg/l 85% removal TSS 1,131 lbs /day 1,696 lbs /day 30 mg/l 45 mg/l 85% removal Fecal Coliform Bacteria 200 colonies /100 ml 400 colonies /100m1 Geometric mean p H Daily minimum is equal to or greater than 6.0 and the daily maximum is less than or equal to 9.0. Instantaneous minimum or maximum 11- 1261.411 Page 1 -25 City of Pasco May 2014 Wastewater Treatment Capacity Assessment Comprehensive Sewer Plan WWTP Performance The WWTP generally produces an excellent quality effluent, demonstrating the plant's ability to achieve and maintain compliance with their discharge permit. Table 1 -8 summarizes the WWTP's effluent quality since 2009 versus the monthly average permit limits. Table 1 -8 2009 to 2011 Effluent Quality Parameter Units Actual NPDES Permit Limit Comments BUD mg/L 19 30 average Meets Limit TSS msg/L 19 30 average Meets Limit Fecal Colonies/ 57 200 geomean Meets Limit Coliform 100 ml PH pH 6 to 7.6 6 to 9 min/max Meets Limit (6.8 avg) Since the current NPDES permit became effective on July 1, 2010, the WWTP has violated its permit only three times (December 2010, February 2012, and February 2013). The specific permit violations experienced and an explanation of each are provided below. December 2010 Violations • Average Month TSS Loading • Average Month TSS Concentration • Average Month BOD Loading • Average Month BOD Concentration • Average Month TSS Percent Removal • Average Month BOD Percent Removal • Average Week TSS Loading • Average Week TSS Concentration • Average Week BOD Loading • Average Week BOD Concentration These violations were the result of poor clarifier performance that was exacerbated by a change in aeration basin operation. Since this time, the City has reviewed the cause of the problem and implemented corrective operational measures. February 201.2 & 2013 Violations There was a discharge in late February of 2012 of non - disinfected wastewater of approximately 75,000 gallon into the Columbia River. A second incident of approximately 11- 1261.411 Page 1 -26 City of Pasco May 2014 Wastewater Treatment Capacity Assessment Comprehensive Sewer Plan 300,000 gallon discharge occurred in early Feb of 2013 of non - disinfected wastewater. Both discharge violations were caused by power loss to the UV Facility. Receiving Water Characterization The Columbia River is the receiving water for the City's effluent and has other nearby point source outfalls, which include the City of Kennewick WWTP and the City of Richland WWTP. Table 1 -9 includes the ambient background data upstream from Pasco from Environmental Assessment Program Monitoring Station 36AO70 on the Columbia River, near Vernita. The water quality immediately upstream of Pasco will vary from that shown due to the Richland WWTP as well as the Yakima River discharge into the Columbia River. Table 1 -9 Ambient Background Data Parameter Value Used Temperature (highest annual 1- DADMax) 21 °C Temperature (* *some water bodies have specific temperature criteria, as assigned in Table 602) See Note 1 pH (Maximum/Minimum) 8.45/8.03 DO (Maximum/Minimum) 14.08/9.38 mg/L Total Ammonia -N 0.01 m L Fecal Coliform (Maximum) 11/100 mL Turbidity 1.2 NTU Hardness 65 mg/L as CaCO3 Lead 0.1 /L Copper 0.67 l.tg /L Zinc 5 /L 7Q10 low flow near Pasco, WA (see Note 2 & 3) 53,200 efs 30Q5 low flow near Pasco, WA (see Note 2 & 3) 63,800 efs Notes: 1. From Washington- Oregon border (river mile 309.3) to Priest Rapids Dam (river mile 397.1). Temperature shall not exceed a 1 -DMax of 20.0 °C due to human activities. When natural conditions exceed a I -DMax of 20.0 °C, no temperature increase will be allowed which will raise the receiving water temperature by greater than 0.3 °C; nor shall such temperature increases, at any time, exceed t = 341(T + 9) 2. Based on combined flow data from USGS 12472800(Columbia River downstream of Priest Rapids) and USGS 12510500 (Yakima River at Kiona, WA) monitoring stations. 3. Only data from 1964 to present was used to account for influence of Columbia River Reservoir System, 11- 1261.411 Page 1 -27 City of Pasco May 2014 Wastewater Treatment Capacity Assessment Comprehensive Sewer Plan r 363 Burden hor } Navy Ba Roar184 - Argent Ai rt 4 _ a� r i1 i - -4 . Comm i it IS 4m6�4 Rill Legend att, hington • a' and ® Wastewater Treatment Plant ® Lift Station = Gravity Pipe � 8" or less 10" to 12" S� - 14" to 18" — 20" to 24" 26" to 36" Force Main C7 City Limit Parcel River r 2,000 4,000 Feet Comprehensive Sewer Plan Figure 1 -2 - MSA 1 ' Wastewater Facilities Northwest Service Area North Court St Area ---- --• - -- Hills foro lntsm�e for Broadmoor Blvd' 6 Interceptor Road 68 8 Interceptor S NE Comme -lal Ave Area i PSC1 Road 44 1 nterceptor Road 8 Into epto PSC2 West Pasco PRL —W PSCS East Service Area �.PSC,4 Road 40 East Interceptor 7, PSCS CO rr 6j" .4 Sacajawea Park Road Interceptor NIP Southeast Pasco Trunk Legend Effl Wastewater Treatment Plant Urban Growth Area City Limit Parcel River Port of Walla Walla Port 0 2,500 5,000 Feet I I , , I i Figure 1-3 MSl Comprehensive Sewer Plan Sewer Service Area $ and Sewer Basins IBroadmoor 1 MG Tank Broadmoor Puma Station Road 68 2.7 MG Tank Three Rivers a Road 36 BP Pump Station -!-- Road 36 $ Burden Rvershm b 5 y �. * a 10 MG Reservoir ' } apitol Ave. � -` o Riverview Pump Station W ; West Pasco WT P `.� Navy B •` Road $ rgerd Ai rt a a e a r East Pasco Pump Statom ' •` RA ommercialtKahlotus, JI Pei Butterfield WTP and Legend - M WTP HS Pump Station •. f M Water Pump •�� '¢ e Water Tank RE Wastewater Treatment Plant ��• ® Litt Station Water Disturbution •`�_ f/ — Gravity Sewer •\•` Urban Growth Area •�' I C-1 City Limit Parcel " -` • ~• River =1�0 2,000 4,000 Feet i MSA M Figure 1 -4 � Comprehensive Sewer Plan = , Water aad Sewer Facilities 1Curu a� i<.�ae. itt s Section 2 SECTION 2 FUTURE CONDITIONS AND FUTURE WASTEWATER FLOW PROJECTION This section reviews the conditions that will impact the development and management of the City of Pasco's (City) wastewater collection and treatment systems. These conditions include future wastewater flows and loading projections and future regulatory requirements and permit limitations. Future Wastewater Flows This section defines the methodology and assumptions for the development of the future wastewater flows within the City's current and future service areas. The development of future population growth and associated wastewater flow projections are fundamental building blocks for the City's Comprehensive Sewer Plan update efforts. Of importance is understanding where in the system growth will occur allowing the City to determine future wastewater infrastructure needs. This process also determines if pipelines and lift stations are adequately sized for specific portions of the system. To develop projected wastewater flows the following information has been reviewed. • Current and future service area boundaries • City Comprehensive Plan and City Comprehensive Water System Plan for location based population and employment information projections • Draft 2011 - 2030 Regional Transportation Plan • The delineation of the major sewer basins • Winter time water usage by customer location • Winter time water production records • Sewer flow metering at multiple locations in the system • Wastewater Treatment Plant (WWTP) based flow records To determine the location and rate of future growth within the City's service area, regional planning information was reviewed. Future growth planning is then not limited to a simple annual percentage rate growth projection developed from a historical perspective. The regional planning documents have estimated how economic factors, socio- economic factors and regulatory mandates might impact where future growth might occur. Service Population The population for the City in 2011 was 61,465, which is based on the 2010 Census and 2008 Comprehensive Plan growth estimates. The estimated population served by the wastewater system was established from the number of equivalent units at 50,839. This difference represents the number of households within the city Limits that are currently on private on -site drainfield systems. These households are predominantly located throughout the western part of the City. Through annexation, residents with existing septic systems are allowed to defer connection to the City's sewer system until the system fails. 11- 1261.411 Page 2 -1 City of Pasco May 2014 future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan Using the medium -range growth scenario, the County population will reach 110,192 by 2030, based on projections developed by the state Office of Financial Management (OFM). The 2011 -2030 Regional Transportation Plan by the Benton- Franklin Council of Governments, projects the City's population will be 87,752 by 2030, which represents 79 percent of the OFM projection. To maintain a consistent growth rate, it is assumed that 79 percent of future population increases in Franklin County will occur within the City Urban Growth Area (UGA). This is a population increase of 27,971 over the 20 -year period planning horizon. Table 2 -1 shows the OFM population projections for Franklin County. Table 2 -1 OFM Population Projections for Franklin County Year Low Medium High 2010 64,742 69,992 76,396 2015 72,582 80,424 90,135 2020 79,853 90,741 104,352 2025 86,402 100,760 118,822 2030 92,010 110,192 133,168 The City's 2008 Comprehensive Plan growth projections are based on the medium OFM population projections for Franklin County. Based on these projections, Table 2 -2 presents the population and growth rates within the City for the planning horizon. Table 2 -2 City of Pasco Population Projections Year Pasco UGA Population Average Yearly % Growth 2010 59,781 2011 61,465 2.82% 2031 89,337 1,89% 2061 152,827 1.81% Per Capita Wastewater Flow The 2011 service population and flow metering infonnation at the WWTP were used to determine the average per capita loading rate. Based on City records there are 13,328 sewer accounts. Of these accounts, 11,010 are single family residential connections, 501 multi- family and 1,817 are commercial /light industrial. Based on the City's Water Facility 11- 1261.411 Page 2 -2 City of Pasco May 2014 Future Conditions & Future wastewater Flow Projection Comprehensive Sewer Plan Inventory Sheet, the multi- family accounts represent 3,812 equivalent residential units (ERU). The resulting total number of ERUs is 14,822. The 2010 Census estimated 3.43 individuals per household. With 14,822 ERUs, this equals a sewer service population of 50,839. Based on an average dry weather flow at the WWTP for 2011 of 3.98 million gallons per day (mgd), the resulting flow per capita is 78 gallons per capital per day (gpcd). This average per capita wastewater flow was compared to other northwest municipal entities of similar size and climate conditions. As indicated by Table 2 -3, the City's per capita flow is similar to other municipal entities in the Northwest. Note that the Spokane County value includes the City of Spokane. Table 2 -3 Northwest Per Capita Wastewater Flow Comparison City Per Capita Demand cd Kennewick, WA 75 Nampa, ID 60 Spokane County, WA 100 Bend, 0 80 Pocatello, ID 95 For planning purposes a per capita flow of 80 gpcd. will be used with the associated projected population served by area within the City to determine future flows. Wastewater Flow Projection by Basin As discussed in Section 1, the City's current UGA is divided into 20 drainage basins for the collection of wastewater. Two (2) basin areas have been added outside of the UGA. These areas, the Northwest Service Area and the East Service Area, were added at the request of the City based on current and projected growth trends and interest by developers. Figure 2 -1 defines the boundaries of these sewer basins in relation to the City limits and UGA. The service population served represents 83 percent of the 61,465 people in the City in 2011. To accurately assign current wastewater flows the sewer connections were spatially located in the system to determine sewer flow distribution. For further wastewater flow determination by basin, two (2) methods were used based on whether the area served was residential /commercial or industrial. For the residential /commercial areas, a population based method was used, which incorporated the Transportation Analysis Zone data from the Draft 2011 - 2030 Regional Transportation Plan. For the industrial areas a value of 1,500 11- 1261.411 Page 2 -3 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan gpd per acre (not including the undevelop able areas, assumed at 10 percent of the total area) was used. This aligns with the City's current planning criteria and recently used for the Commercial Kahlotus Lift Station Project which serves the industrial East Service Area basin on the eastern edge of the City. Figure 2 -1 also shows the industrial areas by basin that use a land based method to develop future flow projection. Using the projected population and 80 gpcd the average wastewater flows for each basin were determined. Table 2 -4 presents the population and flow by basin for current and future conditions. This includes the assumption that by 2031 the City will serve 100 percent of the population within the service area, thereby eliminating all individual on -site septic systems. Therefore, wastewater flows will increase faster than the population growth rates as a result of converting existing on -site systems to the City's collection system. Based on the difference between the 2011 population served and total population within the City of Pasco, an estimate of 2,700 septic tanks will be eliminated by 2031. 11- I261.411 Page 2 -4 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan Table 2 -4 City of Pasco Population Based Wastewater Flow Projections by Basin Basin Number of Connections Population Served 2011* Population 2031* Population 2011 Flow, gpd 2031 Flow, gpd Broadmoor Blvd Interce for 1793 6,839 7,032 7,737 535,425 618,960 East Service Area 0 - 18 18 - - Hillsboro Interceptor 27 103 160 205 8,063 16,400 NE Commercial Ave Area 0 - 8 8 - - North Court St Area 0 - 184 2,441 - 195,280 Northwest Service Area 0 - 479 1,805 - 144,400 PRL 825 3,147 4,008 4,252 246,361 340,160 PSCI 1703 6,496 4,745 7,183 508,549 574,640 PSC2 642 2,449 4,671 4,967 191,714 397,360 PSC3 914 3,486 3,694 4,011 272,938 320,880 PSC4 1930 7,362 7,898 8,719 576,336 697,520 PSC5 146 557 983 1,027 43,598 82,160 PSC6 1325 5,054 4,303 4,958 395,671 396,640 Road 40 East interceptor 1 4 559 652 299 52,160 Road 44 Interce tor+ 1102 4,204 4,991 10,158 329,079 812,640 Road 68 Interceptor' 2007 7,656 7,781 16,384 599,329 1,310,720 Road 84 Interceptor' 155 591 2,465 3,699 46,286 295,920 Sacajawea Park Road Interceptor 0 - 307 348 - 27,840 Southeast Pasco Trunk 17 65 252 411 5,077 32,880 West Pasco Trunk+ 741 2,827 6,927 10,354 221,277 828,320 Total 13,328 50,839 1 61,465 1 89,337 1 3,980 000 1 7,144,880 "Based on OFM Population Numbers and 2011 -2030 Regional Transportation Plan + Basin will experience increase in flow related to the elimination of septic tanks over the planning period. To determine future industrial wastewater flow projections a second methodology was used due to limited information on existing industrial wastewater flows. This is attributed to the City's current industrial wastewater practice of treating large industrial food processor wastewater flows through a separate Reuse Wastewater Treatment Plant that the City maintains. This facility, located in the northeast part of the City, collects and provides treatment of food processor flows prior to land application. The facility treats up to a maximum flow of 10.3 mgd. No residential sewage is conveyed in this system. The Reuse Wastewater Treatment Plant is currently close to capacity and would require expansion for new food processors. Additionally if a large industrial food processor located in the Road 40 East Interceptor or East Service Area, major improvements would be required to construct a 11- 1261,411 Page 2 -5 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan separate conveyance system to the Reuse Wastewater Treatment Plant. Therefore, an industrial food processor could discharge to the City's collection system with the appropriate pretreatment. Light industrial development is limited within the City's service area and historic or land based flow data associated with this type of development is not available. Due to the lack of existing representative flow rates, an acreage based build out flow projection of 1,500 gpd per acre was used to develop future industrial wastewater flows. The 1,500 gpd per acre represents the estimated build out wastewater flows that will be expected. In reviewing the City Comprehensive Plan growth projections, it was estimated that it would take more than 70 years to achieve total build out in the available industrial area. To determine the 20 -year wastewater flow projection, an estimate of 25 percent of the projected build out wastewater flow would be developed in that timeframe. Table 2 -5 defines the industrial areas and flows by basin that will contribute flow to the City's collection system and wastewater treatment plant. In basins that included both residential and industrial areas, the industrial area was identified and calculated separately to eliminate any duplication of wastewater flows. It is assumed that 10 percent of the industrial area will be undevelopable and required for right -of -way, and will not contribute to wastewater generation. Additionally, based on discussions with City staff, the East Service Area is assumed to have 40 percent of the industrial area dedicated for large food processors that will discharge industrial flows to the City's Industrial Wastewater Treatment system. The current land use planning has identified significant near -term industrial development opportunities in the Road 40 East Interceptor and East Service Area. To address the potential for the near -term industrial growth in this area, the City has identified an initial industrial flow allocation of one (1) mgd to be included in the current system evaluation. Additionally, the City has an agreement with the Port of Walla Walla to accept 360,000 gpd of industrial wastewater. This flow will contribute to the Sacajawea Park Road interceptor, as shown in the following table. 11- 1261.411 Page 2 -6 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan Table 2 -5 City of Pasco Industrial Wastewater Flow Projections by Basin Basin Industrial Area, acres Near -Term Industrial Allocation Flow, gpd 2031 Industrial Flow, @ d Buildout Industrial Flow d East Service Area 1,650 - 309,381 1,237,523 Hillsboro Interceptor 2,755 - 929,830 3,719,320 NE Commercial Ave Area 1,322 - 247,868 991,470 PSC4 327 - 110,464 441,855 PSC5 86 - 29,141 116,563 PSC6 91 - 30,737 122,948 Road 40 East Interceptor 1,580 1,000,000 1,533,226 2,132,906 Sacajawea Park Road Interceptor 1 736 360,000* 608,335 993,339 Southeast Pasco Trunk_ 771 - 260,279 1,041,116 Total 9,319 1,360,000 4,059,260 10,797,040 *Flow from the Port of Walla Walla, which is set by agreement at 360,000 gpd. Future increase in flows is attributed to development within the City. Table 2 -6 presents the current and future total wastewater flows by basin combining Tables 2 -4 and 2 -5. These projected flows will be utilized in the evaluation to accurately load wastewater flows by area to identify the collection and treatment system requirements. 11- 1261.411 Page 2 -7 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan Table 2 -6 City of Pasco Wastewater Flow Projections by Basin Basin 2011 Flow d 2031 Flow d Broadmoor Blvd Interceptor 562,560 618,960 East Service Area* - 309,381 Hillsboro Interceptor* 8,063 946,230 NE Commercial Ave Area - 247,868 North Court St. - 195,280 Northwest Service Area - 144,400 PRL 246,361 340,160 PSC1 508,549 574,640 PSC2 191,714 397,360 PSC3 272,938 320,880 PSC4* 576,336 807,984 PSC5* 43,598 111,301 PSC6* 395,671 427,377 Road 40 East Interceptor* 299` 1,585,386 Road 44 Interceptor 329,079 812,640 Road 68 Interceptor 599,329 1,310,720 Road 84 Interceptor 46,286 295,920 Sacajawea Park Road Interceptor* 636,175 Southeast Pasco Trunk* 5,077 293,159 West Pasco Trunk 221,277 828,320 Total 4,007,135 11,204,140 * Includes industrial flow components calculated based on per acre loadings + Does not include the near -term flow allocations identified in Table 2.5 Future Residential Development Wastewater Flow Projections When planning sewer facilities for new growth areas build out flows are required to ensure that the proposed capital improvements have a 75 plus year life based on capacity. To estimate the potential residential build out wastewater flows for future growth, the following assumptions have been developed in Table 2 -7. These assumptions were used when planning for future collection system facilities outside of the currently sewered areas along with hydraulic modeling, geographic information, parcel/right-of-way locations and the configuration of the existing system to generate potential alignments. 11- 1261,411 Page 2 -8 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan Table 2 -7 Future Residential Development Wastewater Flow Projection Assumptions Component Criteria Per Capita Demand 80 gpcd Individuals per Residence 3.43 Residential Parcel Size* 10,000 sqft ROW Allocation+ 25% Peaking Factor' 2.5 * Assumption based on Pasco Planning Division indication of typical zoning for growth areas outside of the City's service area + Assumption based on Pasco Planning Division, if parks and other public land uses are planned they need to be included in addition to this percentage ^ Based on Ecology Orange Book Future Wastewater Loadings Table 2 -8 summarizes the projected flows and loads to the WWTP in year 2031. They are based on the projected collection system flows and the assumption that future wastewater will be similar in constituent strength and characteristics as existing flows (Table 1 -6), including peaking factors and concentrations. This assumption also implies that wastewater characteristics for future industrial flows are similar to existing flow characteristics and the City's pretreatment program will enforce this condition. In order to keep the WWTP operating smoothly and meet NPDES permit limits at these flows and loads, a number of improvements at the WWTP will be required. These improvements are discussed in later sections of this Comprehensive Sewer Plan. 11- 1261.411 Page 2 -9 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan Table 2 -8 Projected Year 2031 Wastewater Characteristics Load Units Annual Average Maximum Month Peak Day Peak Hour Peak Instantaneous Flow mgd 11.2 12.2 14.4 19.7 23.2 Flow Peaking Factor -- 1 1.09 1.29 1.76 2.07 BOD lb /day 25,780 29,000 26,661 -- -- mg/L 276 285 222 TSS lb/day 27,180 33,475 55,124 -- -- mg/L: 291 329 459 Ammonia. lb /day 4,480 5,495 5,164 -- -- mg/L 48 54 43 Total Phosphorus 1b /day 778 875 648 -- -- mg/L 8.3 8.6 5.4 Temperature - High °C 19.8 25.0 26.1 -- -- Temperature — Low °C 19.8 14.9 12.7 -- -- Future Regulatory Conditions The basis for planning, analysis and design of wastewater facilities must include anticipated future regulatory requirements and trends facing the City for operating a wastewater collection and treatment system. This includes potential regulations with respect to collection, treatment and discharge requirements, the status of water quality in the Columbia River, regulatory trends and discussions with the Washington State Department of Ecology (Ecology). NPDES Permit Requirements The Clean Water Act (CWA) of 1972, and later amendments, provides the basis for the National Pollutant Discharge Elimination System (NPDES) permit program and the structure for regulating discharge pollutants from point sources to waters of the United States. The CWA can regulate pollutants through technology and water quality based effluent limits. Additionally, the CWA defines the establishment of pretreatment programs. Other regulations that can also apply to the NPDES program include Endangered Species Act, National Environmental Policy Act, National Historic Preservation Act, Coastal Zone Management Act, Wild and Scenic Rivers Act, Fish and Wildlife Coordination Act and Essential Fish Habitat Provisions. The City operates its wastewater collection and treatment system under Ecology NPDES Waste Discharge Permit No. WA- 004496 -2 issued on June 29, 2010. The permit is effective July 1, 2010 and expires June 30, 2015. The permit includes wastewater discharge limits, monitoring requirements, reporting and record keeping requirements and other conditions 11- 1261.411 Page 2 -10 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan to maintain in- stream water quality. A copy of the permit is included in Appendix A. A fact sheet, explaining and documenting the decisions Ecology made in drafting the current permit, is also included in Appendix A. Receiving Water Conditions The City's WWTP discharges to the Columbia River at river mile 327.6 of the McNary Pool reach of the river, typically referred to as Lake Wallula. Per the CWA all states, every two (2) years, are to perform a water quality assessment and develop lists of impaired waters that do not meet water quality standards. Section 303(d) of the CWA establishes a process to identify and clean up polluted waters. For their water quality assessments, Ecology groups the assessed waters into categories as follows: Category I - Meets tested standards for clean waters: placement in this category does not necessarily mean that a water body is free of all pollutants. Most water quality monitoring is designed to detect a specific array of pollutants, so placement in this category means that the water body met standards for all the pollutants for which it was tested. Specific information about the monitoring results may be found in the individual listings. Category 2 - Waters of concern: waters where there is some evidence of a water quality problem, but not enough to require production of a water quality improvement project (also known as a Total Maximum Daily Load) at this time. There are several reasons why a water body would be placed in this category. A water body might have pollution levels that are not quite high enough to violate the water quality standards, or there may not have been enough violations to categorize it as impaired according to Ecology's listing policy. There might be data showing water quality violations, but the data were not collected using proper scientific methods. In all of these situations, these are waters that Ecology will want to continue to test. Category 3 - Insufficient data: water where there is insufficient data to meet minimum requirements per Ecology Policy 1 -11. • Category 4 - Polluted waters that do not require a Total Maximum Daily Load (TMDL): waters that have pollution problems that are being solved in one of three ways. o Category 4a - has a TMDL: water bodies that have an approved TMDL in place and are actively being implemented o Category 4b - has a pollution control program: water bodies that have a program in place that is expected to solve the pollution problems. While pollution control programs are not TMDLs, they must have many of the same features and there must be some legal or financial guarantee that they will be implemented. o Category 4c - is impaired by a non - pollutant: water bodies impaired by causes that cannot be addressed through a TMDL. These impairments include low water flow, stream channelization, and dams. These problems require complex solutions to help restore streams to more natural conditions. 11- 1261.411 Page 2 -11 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan • Category 5 - Polluted waters that require a TMDL: the traditional list of impaired water bodies traditionally known as the 303(4) list. Placement in this category means that Ecology has data showing that the water quality standards have been violated for one or more pollutants, and there is no TMDL or pollution control plan. TMDLs are required for the water bodies in this category. After Ecology's 2008 Water Quality Assessment, and with Environmental Protection Agency (EPA) approval, the state went to a rotating system for completing the assessments. Due to the volume of new data and the time required to organize, assess and review the listings; Ecology has gone to an alternating marine and freshwater cycle. The current EPA approved Water Quality Assessment focuses on new marine waters and includes the previously listed freshwaters. The next assessment list for freshwater will be covered by the 2012 Water Quality Assessment which is presently in progress and is scheduled for submittal to EPA in the summer of 2014. A review of the current Water Quality Assessment identified 17 sections of the Columbia River from northwest of the City to just below the McNary Dam. Due to their proximity to the City's current and potential future treated wastewater outfalls, these areas of impaired water have the potential to impact the discharge limits in the City's NPDES permit. Figure 2 -2 and Table 2 -9 show the location, type and category of impairment type for each of these 17 sections. Parameter listings with a category 3 assessment (insufficient data) are not included and those with a category 1 assessment (meets standards) are shown in italics. 11- 1261.411 Page 2 -12 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan Figure 2 -2 Relevant Water Quality Assessment Listings Ri tafattd ,� � _ Airport ~YlfestRishfand + . RI C:H H4 I k 124 �! i .... Airport � Sontan City .. t x Shpt El �'�� 324 R2 �: —K- E- IIF4rTE+4 CX �i 8urbmk r` Fitl El yy Sellars. Rd 3W 1 221 'K,. � R`'� '.; . R 17 EEI/ } Paterson _.P]y F1 o ,rrigon 14V' J12 16 11- 1261.411 Page 2 -13 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan Table 2 -9 Relevant Water Quality Assessment Listings Area No. Listing ID Medium Parameter Category 1 8288 Water pH 2 2 6309 Water Temperature 5 2 8289 Water Total Dissolved Gas 4A 3 16060 Water pH 2 4 8800 Tissue Dioxin 4A 5 16883 Water pH 1 6 8803 Water Dioxin 4A 7 21541 Water Temperature 5 8 21542 Water Temperature 5 9 16880 Water pH 1 10 16881 Water Temperature 2 11 18520 Tissue 4,4' -DDE 2 11 18553 Tissue Aldrin 2 11 18628 Tissue Chlordane 2 11 18740 Tissue Hexachlorobenzene 2 11 18819 Tissue PCB 2 11 34874 Tissue Dioxin 4A 12 8799 Tissue Dioxin 4A 13 18518 Tissue 4,4' -DDE 2 13 18551 Tissue A1drin 2 13 18626 Tissue Chlordane 2 13 18738 Tissue HexacWorobenzene 2 13 18817 Tissue PCB 2 13 34868 Tissue Dioxin 4A 14 18517 Tissue 4,4' -DDE 2 14 18550 Tissue AIdrin 2 14 18625 Tissue Chlordane 2 14 18737 Tissue Hexachlorobenzene 2 14 18816 Tissue PCB 2 14 34867 Tissue Dioxin 4A 11- 1261.411 Page 2 -14 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan 15 16877 Water pH 1 15 16878 Water Temperature 2 16 6299 Water Temperature 5 16 7963 Water Total Dissolved Gas 4A 16 6300 Water Temperature 5 16 7965 Water Total Dissolved Gas 4A 16 11086 Water Ammonia -N I 16 11092 Water Arsenic 1 16 11093 Water Mercury 2 16 11094 Water Temperature 5 16 11095 Water pH 2 16 16782 Water Bacteria I 17 8798 1 Tissue Dioxin 4A General Wastewater Trends Increase Efficiency and Sustainability The costs of operating a sewage collection system and WWTP are increasing rapidly as electrical, chemical and staffing costs increase. This leads to the need for increasing efficiency and sustainability of operations. A few key areas frequently upgraded are high efficiency motors on pumps, variable frequency drives, more efficient process systems, energy recovery, lighting and HVAC systems. The City recently replaced two of the centrifugal blowers with high efficiency turbo blowers and will be receiving an energy credit from BPA to help offset the cost of the equipment. The increase in the level of controls and instrumentation within the collection and treatment systems is another trend to increase efficiencies. Broadly, this includes collection, storage and use of data. The number and type of sensors is increasing. Operations are using multiple sensors in real time to operate collections systems and treatment plants more effectively and are fixing issues before they become expensive problems. The use of supervisory control and data acquisition has made the transfer and storage of information easier. This has allowed historical data trending for improved operation and maintenance. Asset Management Asset management systems are becoming more detailed and effective. Asset management generally is the systematic process of operating, maintaining, and upgrading assets cost - effectively. Effective asset management leads to better operational decisions, efficient allocation 11- 1261.411 Page 2 -15 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan of resources, greater ability to plan and implement future repairs and replacement, and improved emergency response. Combined with a geographic information system, asset management becomes a power tool for the day to day operation of the system that can be used by all system operators and managers. Water Reclamation The recognition that water is a vital resource in the region and that wastewater effluent has potential value requires consideration of water reclamation and reuse opportunities for the City. The need to identify and pursue opportunities for water reclamation and reuse as a part of system planning and development will be economically, socially and environmentally driven in order to maintain a sustainable resource. Discharge Limitations In a memo from EPA titled Working in Partnership with States to Address Phosphorus and Nitrogen Pollution through Use of a Framework for State Nutrient Reductions, Acting Assistant Administrator Nancy Stoner dated March 16, 2011, EPA outlines the EPA's commitment in accelerating the reduction of nitrogen and phosphorus loadings. The memo goes on to recommend "...effectiveness of point source permits in target/priority sub - watersheds for Municipal and Industrial Wastewater Treatment Facilities that contribute to significant measureable nitrogen and phosphorus loading ". In the report An Urgent Call to Action -- Report of the State -EPA Nutrient Innovations Task Group EPA lists Publicly Owned Treatment Works (POTW) as a major source of nitrogen and phosphorus to the Nation's wasterways. The report states, "There is a potential for more widespread use of nutrient limits in NPDES POTW permits where impaired or vulnerable waters are present ". The report ends with a call to action and that "all major sources of nutrient must be held accountable for their contributions to the problem ". Potential Future Regulations The potential regulations are separated into the wastewater collection system and wastewater treatment requirements. Collection System The Sanitary Sewer Overflow (SSO) Rule, if passed, will reduce discharges of raw sewer from sanitary sewer collection systems. The rule was originally developed in 2001 and would: • Require capacity, management and O &M (CMOM) programs for sanitary sewers • Clarify reporting and record keeping requirements • Require public notification • Clarify SSO permit requirements to municipal satellite collections systems • Allow a permittee to establish defenses under limited conditions The rule was signed by EPA administration but withdrawn prior to publication. 11- 1261.411 Page 2 -16 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan Wastewater Treatment On March 26, 2012 a meeting was held with representatives of Washington DOE (Richard Koch and Diane Washington), Murray, Smith & Associates, Inc. and the City. While a number of topics were discussed at this meeting, the anticipated regulatory requirements for the WWTP over the next 20 years was a specific area of focus. After discussing Ecology's Water Quality Assessment on the Columbia River, EPA's focus on nutrient pollution and general regulatory trends; it was agreed that the following regulatory assumptions were reasonable to use in the comprehensive sewer planning effort. • Thru Year 2019 - effluent limits unchanged • Year 2020 to 2030 -nitrification required (effluent ammonia < 1 mg/1) 0 Year 2031 - phosphorus removal required JP < 1 mg/1) In addition, it is advised that the City actively monitor updates to Ecology's Water Quality Assessment listings and the subsequent development of pollution control plans and TMDLs for identified pollutants. There are a number of identified pollutants of concern (category 2) identified on the Ecology's current Water Quality Assessment that could potentially impact the operation of the City's sewer collection and treatment system. For example, future downstream temperature mitigation plans could result in discharge temperature limits for the treatment plant. Future mitigation plans for mercury, PCBs and pesticides could require the City to monitor and control discharges into the sewer system. Pretreatment Regulations Future regulatory requirements facing the City include meeting the General Pretreatment Regulations of the EPA National Pretreatment Program. On February 1, 2013 the City received an Administrator Order from Ecology requiring that the City develop and maintain a formal pretreatment permitting and engineering review program. A copy of this letter is in Appendix B. The National Pretreatment Program requires all large POTW, which have a designed treatment capacity of more than five (5) mgd to establish local pretreatment programs. These local programs must enforce all national pretreatment standards and requirements in addition to any more stringent local requirements necessary to protect site - specific conditions at the POTW. Since POTWs are not designed to treat most toxic or non - conventional pollutants that are present in industrial waste, the purpose of the National Pretreatment Program is to protect POTWs and the environment from the adverse impacts that may occur when hazardous or toxic wastes are discharged into a sanitary sewer system. The National Pretreatment Program is charged with controlling toxic, conventional, and non - conventional pollutants from nondomestic sources that discharge into sewer systems, as described in CWA Section 307(a). This is achieved mainly by regulating nondomestic (industrial) users of POTWs that discharge toxic wastes or unusually strong conventional wastes. In Washington State, Ecology implements this program for the EPA. 11- 1261.411 Page 2 -17 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan Currently Ecology administers the pretreatment program for the City. Currently there are two (2) industrial users (IU) that have pretreatment permits to discharge to the City's wastewater collection system. These are: Al Quality Services Easterday Farms Produce Company Ecology also maintains the discharge permits for the City's Reuse Facility that receives food processing wastewater from four dischargers. These are: • Bybee Foods LLC • Pasco Processing • Reser Fine Foods • Twin City Foods The City's WWTP design capacity was evaluated as part of this Comprehensive Sewer Plan update and is estimated to be greater than five (5) mgd, refer to Section 4. Thus Ecology will be requiring that the City develop a pretreatment program and become the "Delegated Authority" in administering it. That requires the City to pass local ordinances, issue their own discharge permits and run their own pretreatment program. To become the Delegated Authority the City will need to develop a pretreatment program as defined in the Introduction to the National Pretreatment Program. The POTW's NPDES permit is modified to require development of a local program and submission of the program elements to the Approval Authority (Ecology) for review and approval. Consistent with CWA Section 403.8(f), POTW pretreatment programs must contain six (6) minimum elements: 1. Legal Authority The POTW must operate pursuant to legal authority enforceable in federal, state or local courts, which authorizes or enables the POTW to apply and enforce any pretreatment requirements developed pursuant to the CWA and implementing regulations. At a minimum, the legal authority must enable the POTW to i. Deny or condition discharges to the POTW; ii. Require compliance with pretreatment standards and requirements; iii. Control W discharges through permits, orders, or similar means; iv. Require IU compliance schedules when necessary to meet applicable pretreatment standards and/or requirements and the submission of reports to demonstrate compliance; V. Inspect and monitor IUs; vi. Obtain remedies for W noncompliance; and vii. Comply with confidentiality requirements. 2. Procedures The POTW must develop and implement procedures to ensure compliance with pretreatment requirements, including 11- 1261.411 Page 2 -18 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan i. Identifying and locating all IUs subject to the pretreatment program; ii. Identifying the character and volume of pollutants contributed by such users; iii. Notifying users of applicable pretreatment standards and requirements; iv. Receiving and analyzing reports from IUs; V. Sampling and analyzing IU discharges; vi. Evaluating the need for lU slug control plans; vii. Investigating instances of noncompliance; and viii. Complying with public participation requirements. 3. Funding The POTW must have sufficient resources and qualified personnel to carry out the authorities and procedures specified in its approved pretreatment program. 4. Local Limits The POTW must develop local limits in defined circumstances or demonstrate why these limits are not necessary. 5. Enforcement Response Plan (ERP) The POTW must develop and implement an ERP that contains detailed procedures indicating how the POTW will investigate and respond to instances of IU noncompliance. 6. List of SIUs The POTW must prepare, update, and submit to the Approval Authority a list of all SIUs and where applicable indicate which SIUs are NSCIUs or MTCIUs. In addition to the six specific elements, pretreatment program submissions must include the following [40 CFR 403.9(b)]: • A statement from the city solicitor (or the equivalent) declaring that the POTW has adequate authority to carry out program requirements. • Copies of statutes, ordinances, regulations, agreements, or other authorities the POTW relies upon to administer the pretreatment program, including a statement reflecting the endorsement or approval of the bodies responsible for supervising or funding the program. • A brief description and organizational chart of the organization administering the program. • A description of funding levels and manpower available to implement the program. In addition to Ecology's February 1, 2013 Administrative Order outlining the process and requirements for the City to develop an approved pretreatment program, Ecology has indicated 11- 1261.411 Page 2 -19 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan that they plan to delegate the Reuse W WTP permitting to the City as well. Once the City meets the requirements of the pretreatment program, Ecology will give the City "Delegated Authority" to implement the pretreatment program. Implementation of this program will be coordinated with the current permit cycle that Ecology has with industrial discharges in the City to allow for renewing of the permit to coincide with being transferred to the City. Ecology is requiring that the pretreatment program be in place by January 1, 2015, The City is currently on track to meet the January 1, 2015 deadline based on the following milestones for pretreatment delegation. • Industrial User Survey — Completed May 31, 2013 • Sampling to determine Local Limits — Began October 2013 and ongoing • Submit Proposed Sewer Use Ordinance —Draft submitted for review April 1, 2014 • Submit Local Limits evaluation — Due June 1, 2014 • Mercury Control Plan — Due June 1, 2014 • Draft Program Procedures Manual — Due June 1, 2014 • Final Program Procedures Manual — Due August 1, 2014 • Submit Pretreatment Program — Due November 1, 2014 • Pretreatment Delegation — January 1, 2015 11- 1261.411 Page 2 -20 City of Pasco May 2014 Future Conditions & Future Wastewater Flow Projection Comprehensive Sewer Plan Northwest Service Area North sCourt t Area - ... -- .••.�.•. -ti Y i Broadmcor Blvd' Interceptor 3 t Road Fib Interceptor F 9 PS" C1 o Load 44 Interceptor for r s uR� PSC2 S 1 West Pasco Tr PRI. r PSCS PSC4: e yer € PSCi'.#x V, Ci ��THA Legend � ;w r;" gig Wastewater Treatment Plant VZZ Industrial Areas Port of Walla Walla Urban Growth Area 17-71 City Limit Parcel River 0 2,500 5,000 Feet t J MSA . Y Figure Areas ' � Comprehensive Sewer Plan � Industrial Areas Nu�n:�ad+�.lc.lnc � r "�jj "` Defined by Sewer Basins ,3 f � j r Northwest Service Area North sCourt t Area - ... -- .••.�.•. -ti Y i Broadmcor Blvd' Interceptor 3 t Road Fib Interceptor F 9 PS" C1 o Load 44 Interceptor for r s uR� PSC2 S 1 West Pasco Tr PRI. r PSCS PSC4: e yer € PSCi'.#x V, Ci ��THA Legend � ;w r;" gig Wastewater Treatment Plant VZZ Industrial Areas Port of Walla Walla Urban Growth Area 17-71 City Limit Parcel River 0 2,500 5,000 Feet t J MSA . Y Figure Areas ' � Comprehensive Sewer Plan � Industrial Areas Nu�n:�ad+�.lc.lnc � r "�jj "` Defined by Sewer Basins Section 3 SECTION 3 COLLECTION SYSTEM ANALYSIS To analyze the existing wastewater collection system a hydraulic model was developed to simulate performance of the system with respect to flows and system capacities. This section presents the hydraulic sanitary sewer model development, the collection system design standards criteria, and the analysis results under existing and 2031 conditions. Model Development and Calibration Hydrologic and Hydraulic Model Software Selection InfoSWMM (Innovyze) software was used to perform the wastewater collection system modeling and analysis. InfoSWMM is a dynamic wastewater modeling software application that runs within the ArcGIS software environment. InfoSWMM allowed for efficient network construction. The model network was constructed using GIS data available ftom a previous modeling effort and augmented with updated CAD based information. Facility information for each of the major lift stations was collected and input into the model. Land base information, such as tax lot, street mapping and aerial photos, was also used as reference. In addition to dynamic wave routing of the gravity and pressurized collection system, InfoSWMM's model capabilities allow for continuous rainfall- runoff simulations to simulate wet weather infiltration and inflow (III). Network Construction The City of Pasco (City) provided information, including CAD files, shapefiles based on the original HYDRA model and Franklin County GIS data that was examined and used to develop the existing model. All subsequent updates to the model were then done within the InfoSWMM program. The network parameters used to calculate the system hydraulics include pipeline length, diameter and invert elevation, as well as manhole invert and rim elevations. Lift station characteristics include the number of pumps, wet well dimensions, pump controls and pump curves. For many of the modeled manholes, invert elevation or ground elevation information was not available, or was inconsistent between the CAD file and the original HYDRA model. In some cases the HYDRA model noted that certain elevation values had been assumed. These notes were preserved in the "User Tag" field of the InfoSWNIM model junctions. A spot check of 10 locations in the system was conducted using survey equipment. Due to the historical use of several vertical datums, differences between the surveyed locations and those identified within the CAD and GIS data were identified. The profiles of the modeled pipelines were also evaluated to identify areas with questionable grade changes. A number of these areas were then field checked by City crews where the manhole depth was measured 11- 12£1.411 Page 3 -1 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan and compared with the modeled information. It is recommended that the City collect additional "survey grade" rim and invert elevations for the areas, to continue to improve the accuracy of the model for future evaluations. The City's major lift stations, listed in Table 3 -1, were included in the model. For each lift station, the model includes the wet well, one (1) or more pumps, and a force main pipe. For normal operations, each pump has an assigned start and stop depth. The pump flow is calculated by the model using the suction and discharge heads and corresponding pump curve, with the exception of the Road 36 and Burden Lift Station, for which no curve was available. The pumps at the Road 36 and Burden Lift Station are modeled so that the suction flow entering the facility is equal to the discharge flow. Table 3 -1 Modeled Lift Stations Lift Stations 9th and Washington Maitland Road 36 and Burden Navy Base Pearl Street Pennie Avenue Flaw Generation and Calibration Overview Wastewater flows consist of domestic (residential, cominercial and institutional) and large discharger (primarily industrial) sources. Dry weather flow (DWF) modeling includes the generation of average daily loadings for all sources and the generation of diurnal curves that are used to vary the average daily loadings over the course of 24 hours. DWF calibration includes refinements to the total magnitude and spatial variability of the loadings and refinements to the shape of the diurnal curve. After dry weather calibration is completed, wet weather calibration can begin. The total wet weather loading consists of the DWFs plus the wet weather contribution referred to as I /I. An III response is generated by applying a selected rainfall event, or storm, which is related to III through the use of a synthetic unit hydrograph, and a defined sewershed area. Wet weather calibration consists of adjusting the synthetic unit hydrograph to match model results with observed flow monitoring data collected during storm events. Flow Monitoring Overview Flow monitoring was performed over a period of six (6) weeks starting in October of 2011 in order to provide data for the dry and wet weather model calibration. ADS Environmental (ADS) installed 10 temporary flow monitors at predefined locations throughout the collection system. The monitors were placed strategically in order to provide information for 11- 1261.411 Page 3 -2 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan the total flows generated in large isolated areas upstream of each flow monitor. These areas upstream of each monitor were identified to correspond with the "major sewer basins" that were developed as part of the project. Figure 3 -1 shows a map of the flow monitor locations, labeled by their flow monitor ID (1 -10). In addition to these 10 temporary flow monitors, flow information for the 9th and Washington Lift Station, the Maitland Lift Station and the Wastewater Treatment Plant (WWTP) was also reviewed and used for the model calibration process. The overall goal of the monitoring was to collect both DWFs and wet weather flow (WWF) events during the effort for use in the model calibration and III identification. Each site was monitored for approximately six (6) weeks, in the fall of 2011. During this time period no significant precipitation event occurred, and the flow data collected by the monitors did not indicate the presence of any significant variation in flow. Therefore, the flow monitoring data was used to calibrate the model to DWF, but not for the WWF calibration process. All of the flow in the collection system passes through either the 9th and Washington or the Maitland Lift Stations. The force mains of these two (2) lift stations then convey the flow directly to the WWTP. After reviewing the 9th and Washington, Maitland and WWTP flow data, it was decided to use the total flow measured at the two (2) lift stations as an estimate of the total flow passing through the WWTP. This information was used due to concerns expressed by the City about the accuracy of the effluent flow monitor at the WWTP. It is recommended that the City further investigate the difference in flow measurements between the influent and effluent meters to analyze what is causing the difference. DWF Generation Model Loading The flow rate and spatial location of the model DWF loading are based on three (3) years of winter water billing records. The average water usage for each account was calculated, and this flow value was allocated to the model as DWF. The City water customers that do not have sewer connections were removed from the analysis. In order to determine where to load each of these calculated average flow values to the model, a process called "geo- coding" was used to convert the billing addresses to GIS -based points. These points were then allocated to the model by linking the closest manhole to the geo -coded billing record location. In most cases, the geo -coded points were assigned to the closest model manhole, but in some cases, for example when points were geo -coded as being relatively far away from the system, they were investigated further and manually assigned to a manhole. Questions that arose during this process were submitted to the City for review, and the answers that were received were used to complete this process of allocating the water billing record based flows to the model. The question of whether it was necessary to add additional loading to the model to represent large industrial dischargers, which may not have been included in the submitted water billing 11- 1261.411 Page 3 -3 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan records, was considered. However, the City maintains a separate reuse system that collects, stores and then land applies food processor wastewater north of the City, Constructed in 1995, the Reuse Facility was constructed to specifically serve the City's large industrial food processors and is operated seasonally. The reuse system, including its collection system, is a separate entity from the City's wastewater collection and treatment systems and therefore is not included in this analysis or considered part of this Comprehensive Sewer Plan, Diurnal Curve Generation The flow monitoring data collected by the 10 flow monitors in the fall of 2011 was used to construct representative daily DWF patterns (diurnal curves). This was implemented by averaging the flow values for each hour of the day across the entire flow monitoring period at each location. The flow monitoring data was checked for the presence of wet weather effects that needed to be excluded from the averaging process when creating these dry weather diurnal curves. However, no wet weather response was evident in the monitoring data, due to the lack of significant rainfall during this time period. Daily average flows and diurnal patterns for each flow monitor were calculated separately for weekdays (Monday through Friday) and weekend days (Saturday and Sunday). These diurnal curves were applied to the DWF loading in the model, in order to allow the magnitude of the loading to vary depending on the simulated hour of the day. The loading at each model manhole was assigned the weekday and weekend diurnal curves of the closest downstream flow monitor. For the small number of cases where there was no flow monitor located downstream of a model manhole that was assigned dry weather loading, the diurnal patterns of a nearby monitor were applied. Dry Weather Calibration Dry weather calibration was performed by adjusting the magnitude (average flow values) and the temporal variability (diurnal curves) of the model's dry weather loading and checking those flows at the flow monitoring stations. All model DWFs were scaled up or down uniformly, in order to achieve an acceptable calibration to volume, to match the downstream flow monitoring location. Overall, this process resulted in an increase in the total amount of DWF applied in the model by 36 percent, from 2.93 million gallons per day (MGD) to 3.99 MGD. This discrepancy illustrates the fact that considerably more sewage is being measured at the WWTP under dry weather conditions than is being billed to City water customers. These differences may be caused by older water meters "under reporting" flow, unmetered water connections, or infiltration in the system. It is recommended that the City continue to compare flows and water billing information on a yearly basis. Based on this analysis, the City may want to consider improving water meter accuracy through calibration and replacement of existing meters. 11- 1261.411 Page 3 -4 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Table 3 -2 lists the original and calibrated total DWF applied as input to the model. The information is grouped by the flow monitor used for the assignment of diurnal patterns to the model loading. Table 3 -2 Original and Final (Calibrated) DWF Inflows, by Flow Monitor Flow Monitor Site Number Original DWF m) Calibrated DWF m Scaling Factor 1 230 260 1.13 2 239 283 1.18 3 93 269 2.88 4 10 10 1.00 5 119 198 1.67 6 217 119 0.55 7 158 320 2.02 8 257 393 1.53 9 132 328 2.48 10 581 593 1.02 Total 2,036 2,773 1.36 Total (MGD) 2.93 3.99 1.36 Note: gpm =gallons per minute The applied diurnal patterns were also adjusted as needed in order to achieve an acceptable calibration to the peak flow, and also to achieve good agreement to the pattern of the measured flow at each monitoring location. This process involved, in some cases, peaking the model diurnal curves up or down in order to compensate for hydraulic routing effects such as peak flow attenuation on the flow patterns as they were routed through the model. The model was simulated over a period of two (2) days; a weekday and a weekend day. The simulation output was compared with the average measured flows for weekday and weekend days for the entire period of record at each flow monitor. Table 3 -3 shows the results of the DWF calibration by comparing the simulated peak and average flows with the measured peak and average flows at each monitoring location. Time series graphs comparing the measured and simulated flow at each location are shown in Figures 3 -2 through 3 -11. The graphs show the two (2) day simulated time period of a weekday and a weekend day. It was noted by ADS during their review of the collected flow monitoring data that the peak flows recorded at site No. 9 were slightly higher than the peak flows at site No. 4. Site No. 9 is immediately upstream of No. 4, and so therefore this result indicated an inconsistency between the two (2) flow monitors. After reviewing the data, ADS recommended that site 11- 1261.411 Page 3 -5 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan No. 9 be considered more reliable, noting that the peak flows appeared to be understated at site No. 4. Therefore, for the model DWF calibration process, the model was calibrated to the peak flow at site No. 9. Table 3 -3 DWF Calibration Statistics Flow Monitor Site Number Volume Calibration Peak Calibration Measured Flow m) Modeled Flow ( m ) Error Measured Flow { m Modeled Flow m) Error { %) 1 260 260 0.16 444 446 0.53 2 544 543 -0.2 929 932 0.33 3 271 270 -0.57 342 344 0.51 4 861 879 119 1399 1470 5.05 5 198 198 - 0.29 334 336 0.57 6 1464 1465 0.07 2227 2231 0.18 7 1772 1785 0.77 2701 2670 -1.13 8 386 387 0,29 562 560 -0.41 9 867 871 0.43 1469 1458 -0.76 10 589 594 0.86 892 884 -0.92 11- 1261.411 Page 3 -6 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Figure 3 -2 DFW Calibration — Site 1 Road 100 Interceptor Basin, (NM 887) 500 Flow Monitor #1 - -�- - - - -- 450 I'`' -- — -_ - -- - - - - - -- - -- — - -c -` — „— - Ono 350 300 250 200 150 700 50 1 0 0 5 10 15 20 25 39 35 40 45 50 -� Measured Flow JGPM) -4*- Modeled Flow [GPM] Figure 3 -3 DFW Calibration -- Site 2 Road 68 Interceptor Basin, (MR 946) 1000 Flow Monitor #2 700 600 500 ----- — 400 - 300 200 -L I ❑ 5 v10 15 20 25 30 35 40 45 50 — Measured FbwOW - ModeledflowOPMI 11- 1261.411 Page 3 -7 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan 400 - - - -- I 330. 300 250 200 I too so i i I i 0 5 10 15 20 2s 30 35 40 -►- Measuretl Flow(GPM) — Modeled FlPw[GPM] Figure 3 -5 DFW Calibration — Site 4 Road 44 Interceptor Basin, (MIS 1335) - - ----- - - - - -- 1600 - - __ - - -_ - -- -_— { Flow Monitor #4 1400 1200 1000 800 600 490 , 300 y 0 ' Figure 3 -4 DFW Calibration — Site 3 West Pasco Trunk Basin, (MH 1318) Flow Monitor li3 45 50 0 5 10 15 20 25 30 35 40 45 so �Measuretl Flow [GPMI -i- Modeled Fld^w [GPMJ 11- 1261.411 Page 3 -8 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Figure 3 -6 DFW Calibration — Site 5 PSC1 Basin, (NM 1535) .4DO Flow Monitor #5 350 300 250 200 I 150 I 100 I 50 I i 0 5 2,000.00 1,so0.a0 1,000.00 10 15 20 35 30 35 40 45 50 j -Measured Flaw(GPMI Modeled Flow {GPM) Figure 3 -7 DFW Calibration — Site 6 — -PSC2 Basin, (MH 1694) - - - - - - - -- 0.00 0 5 30 15 20 25 30 35 40 �me. rd Flow (GPM) —*-Modeled How[GPM� 45 50 11- 1261,411 Page 3 -9 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan 7,500.00 2,000.00 Figure 3 -8 DFW Calibration — Site 7 PSC3 Basin, (NM 2198) -Flaw Monitor #7 1,500.00 I I I I _- 1 5W 00 - -- - -- - — - - -- - 0 5 10 15 20 75 30 35 Measured Flow (GPM) -*=Mndded Flow(GPMl Figure 3 -9 DFW Calibration — Site 8 PSC6 Basin, (MH 2569) i Flow Monitor #8 I -- I 4 i 4 i 200 + -- - - - -- - - --- — 100 F- - -- - - -- ---- -- -- -- -- -- --- - -- _ _ - - - G_ -��— �— - - -- -- -..— - -- — - -- 0 5 10 15 20 25 30 35 — Measured Flaw (GPM) (-Modeled FFow {GPMI 40 45 So 40 45 50 11- 1261.411 Page 3 -10 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan i Figure 3 -11 DFW Calibration — Site 10 PSC4 Basin, (NM 2322) Flow Monitor 910 ---------- - -- 900 ' goo 704 600 500 400 300 200 0 5 10 15 20 25 30 35 40 45 50 Measured Flow(GPMI t Modeled Flm(GPMj 11- 1261.411 Page 3 -11 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Figure 3 -10 DFW Calibration — Site 9 Road 44 Interceptor Basin, (MH 1343) 1600 - -- - - - - -- _ - -- -- - - -- - - - -- - -- — -- - - Flow Monitor #9 1400 _ I 11200 I I` 1000 I � i - -_._- I goo I I i � 600 I 400 1 I - - - -- 200 p I 0 5 10 15 20 25 30 35 40 45 50 Measured Fla tGPM) -l- Modeled Flov(GPM) i Figure 3 -11 DFW Calibration — Site 10 PSC4 Basin, (NM 2322) Flow Monitor 910 ---------- - -- 900 ' goo 704 600 500 400 300 200 0 5 10 15 20 25 30 35 40 45 50 Measured Flow(GPMI t Modeled Flm(GPMj 11- 1261.411 Page 3 -11 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Wet Weather Flow Generation Model Loading The WWF component of the model consists of a storm event, sewershed area (wet weather area of impact), and III unit hydrograph. The sewershed area is that portion of the City's service area that can directly affect WWFs. The unit hydrograph method relates a storm event to the associated III. The sewershed area is the portion of the basin that contributes to the wet weather III and is adjacent to the collection system that has the potential to contribute to inflow. A 20 -foot buffer on each side of sanitary pipe was used for this study. In general, the system's sewershed area varies between 5 and 20 percent of the total area of each sewer basin. From an overall average perspective, the sewershed area represents approximately 10 percent of the sewer basin area. In the City WWF model, III loading was distributed throughout the collection system by dividing the system up into areas called "sub- basins ". The process used to create these sub - basins is described in detail in the "2031 Dry Weather Flow Generation" later in this section. Sewershed area flow values representing currently served sub -basin areas were defined for each of the model manholes. This allows for the conceptual representation of the WWF that enters the system from each sub - basin. The model sewershed areas assigned to each of the manholes were calculated based on the areas of each of the sub - basins. The process determined the total area of the 20 -foot pipe buffer divided by the total area of each major basin, in order to calculate a total "sewershed ratio" value. These ratios represent an estimate of the percentage of basin area contributing to III in the collection system. Finally, in order to calculate sewershed area values for each sub - basin, the area of each sub -basin was multiplied by the sewershed ratio of the major basin in which it was located. In InfoSWMM, the III is generated from unit hydrographs which are defined by the following six (6) parameters: R: Fraction of rainfall that generates runoff (runoff volume parameter) T: Time to the peak of the unit hydrograph (peak runoff parameter) K: Ratio of the falling limb time to the rising limb time of the unit hydrograph (measure of the skewness of the hydrograph) Dmax: Maximum depth of initial abstraction Drec: Rate at which the initial abstraction depth is made available again D0: Value of initial abstraction depth at the start of the simulation 11- 1261.411 Page 3 -12 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Wet Weather Calibration As noted previously, no significant precipitation occurred during the fall 2011 temporary flow monitoring period. Therefore, the approach used to calibrate the model to WWF was to examine historical flow data for the WWTP (as estimated by the sum of 9th and Washington and Maitland Lift Station flows), in order to identify time periods when large flows were recorded. These time periods were then cross referenced against precipitation data in order to check for a correlation between high flows in the system and rainfall events. Precipitation data from a Weather Underground rain gauge and also a gauge located at the WWTP were examined. The rainfall and flow data examined spanned from November 2010 to December 2011. It was found that correlations between noticeably high flows at the WWTP and significant rainfall events were present related to three rainfall events, which are summarized in Table 3- 4. Table 3 -4 Precipitation Events used for Wet Weather Flow Calibration An analysis of the precipitation data indicated that the June 1, 2011 storm was the most severe rainfall event that occurred during the November 2010 to December 2011 time period. These three (3) events were selected for use in the WWF model calibration process. The measured flow data, against which the model simulation output was compared for the model calibration process, was a composite time series of the flows measured at the 9th and Washington and Maitland Lift Stations. The rainfall input used in the model for the WWF calibration simulations was a time series of the WWTP rain gauge precipitation data. The model was calibrated by adjusting the InfoSWMM unit hydrograph parameters and running simulations until a suitable combination was found that generated acceptable agreement between the measured and simulated flow for each calibration event. The distribution of the WWF model loading was adjusted during the calibration process such that more flow entered the system per linear foot of pipe in the downtown area than elsewhere in the system. The basins that were adjusted are PSC3 and PSC4. This was done in order to improve the quality of the calibration, and to be consistent with anecdotal 11- 1261.411 Page 3 -13 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Date and Time Total 6 Hour Classification of Event Rainfall Depth aches Primary Event 6/1 /2011 7:00:00 PM 0.42 Secondary Even_ t 5/15/2011 1:00:00 AM 0.37 Third Event 5/25/2011 6:30:00 PM 0.22 An analysis of the precipitation data indicated that the June 1, 2011 storm was the most severe rainfall event that occurred during the November 2010 to December 2011 time period. These three (3) events were selected for use in the WWF model calibration process. The measured flow data, against which the model simulation output was compared for the model calibration process, was a composite time series of the flows measured at the 9th and Washington and Maitland Lift Stations. The rainfall input used in the model for the WWF calibration simulations was a time series of the WWTP rain gauge precipitation data. The model was calibrated by adjusting the InfoSWMM unit hydrograph parameters and running simulations until a suitable combination was found that generated acceptable agreement between the measured and simulated flow for each calibration event. The distribution of the WWF model loading was adjusted during the calibration process such that more flow entered the system per linear foot of pipe in the downtown area than elsewhere in the system. The basins that were adjusted are PSC3 and PSC4. This was done in order to improve the quality of the calibration, and to be consistent with anecdotal 11- 1261.411 Page 3 -13 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan information which indicated that the collection system in the downtown area contributes a higher amount of 1/I compared with newer pipe construction. The City is planning to conduct additional flow monitoring in the downtown area in future years to validate the magnitude of the wet weather response and, if required, identify required capital projects to address it. Table 3 -5 shows the results of the WWF calibration by comparing the total simulated peak and average flows (as extracted from the full system model upstream of the 9th and Washington and Maitland Lift Stations) with the measured peak and average flows from the WWF calibration time series. Graphs comparing the measured and simulated flow are shown in Figures 3 -12 through 3 -14. The graphs show the two (2) day simulated time period around each calibration event. Table 3 -5 WWF Calibration Statistics Figure 3 -12 Wet Weatber Flow Calibration — Primary Event Calibration Graph for Primary WWF Event 0 _ i a i o ; i I I i { 1� I o 06/01/201100:00:00 061021201100:00:00 06/03/203100:90,00 °Measured €low -- Simulated Flow 11- 1261.411 Page 3 -14 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Volume Calibration Peak Calibration Event Date Measured. Modeled Error Measured Modeled Error Range Flow Flow Flow Flow ° (� °) ° (�O) (MGD MGD (MGD GD) Prima 6/1-6/3 4.35 4.33 -0.46 8.46 8.52 0.71 Seconda ry 5/14-5/16 4.21 4.26 1.19 5.85 5.88 0.51 Third 5125 - 5/27 4.05 4.11 1.48 6.04 6.13 1.49 Figure 3 -12 Wet Weatber Flow Calibration — Primary Event Calibration Graph for Primary WWF Event 0 _ i a i o ; i I I i { 1� I o 06/01/201100:00:00 061021201100:00:00 06/03/203100:90,00 °Measured €low -- Simulated Flow 11- 1261.411 Page 3 -14 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Figure 3 -13 Wet Weather Flow Calibration — Secondary Everitt Calibration Graph for Secondary WWF Event I7 ._. — - — - -- — - -- - - - — - - - -- - -- I 6 - - -i i 5 I{ 4 i 3 7 I � �I i 0 05/14/2011 00:00:00 05/15!201100.0600 I — Measured Flow -- Simulated Flow 5 4 i I I 05f16/201100:1]0:00 ! Figure 3 -14 Wet Weather Flow Calibration — Third Event Calibration Graph for Third WWF Event i I 1 ? 0 . { 05/25/201100:00:00 i 05/26/201100:11200 — Measured Haw — Simulated Flow I I I I 05 /2 7 /2 011 00A0:00 t 11- 1261.411 Page 3 -15 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Design Stornt The Eastern Washington stormwater manual indicated that the design storm for the area around the Tri- Cities is a 24 hour SCS Type I storm distribution. A Type I storm distribution is a typical thunderstorm event common in eastern Washington. The isopluvial indicated that the 10 -year, 24 -hour storm depth for the City was 1.3 inches. Figure 3 -15 shows a graph of the design storm that was constructed by scaling the SCS Type 1 A storm distribution such that the total depth is 1.3 inches. This is the rainfall time series that was attached to the model as input for the design storm simulations. Figure 3 -15 SCS Type 1A Design Storm 24 hour SCS Type 1A Storm Distribution, 1.3 Inches Total Depth 0.03 I i L0.02 4 -- -- .`-- -- -- --.. �..- -- -- -- -- 5555� i t1 AA - - - -- i I 0,01 I -1 k, 0.0!35 i Y I I I 0 12:00AM 3:00AM 6:OOAM 9:00AM 12:00 PM 3 OOPM 6:00PM 9:00 PM 12:00AM Hour The peak of the design storm occurs at approximately 8:00 AM, which generally coincides with the diurnal peak for dry weather throughout the collection system. This assumption adds a level of conservancy to the overall deficiency analysis as it assumes the wet weather peak occurs at or near the same time the dry weather peak occurs. Additionally, a comparison of the peak DWFs generated in the calibrated model for weekdays and weekend days indicated that the peak weekend flow was approximately 17 percent higher than the peak weekday flow. Therefore, for wet weather scenario analyses, a 24 -hour simulation of a weekend day was run with the design storm rainfall time series attached as loading to the model. This caused the peak wet weather from the design storm to be generated at approximately 8:00 AM on a weekend day, which corresponds to the conservative ssumption for planning purposes that peak wet weather occurs concurrently with peak DWF conditions. 11- 1261.411 Page 3 -16 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan A comparison of the design storm and the three (3) precipitation events used for WWF calibration is illustrated in Figure 3 -16. The precipitation data was collected at 30 minute intervals, and the design storm values were for six (6) minute intervals, so for the graph the rainfall data was scaled by a factor of five in order to estimate six (6) minute rainfall intensity values that matched the frequency of the design storm values. This comparison suggests that the design storm has greater intensity than each of the calibration storm events. Additionally, the six (6) hour total depth of the design storm is 0.61 inches, which is larger than the six (6) hour cumulative depth of each of the three (3)calibration events, which were noted previously in Table 3 -4, Figure 3 -16 Comparison of Design Storm with Calibration Storm Events 0.035 - Comparison of Design Storm with Three 2021 Calibration Storm Events 0.01 0.025 a.a2 x 0.015 a i a.a1 �I 0 60 120 180 240 300 360 ElapsetlTlme IMlnuissj — Primary Calihnrion tvant {6 /1/ 2011} — Secondary Calibration E—t (5/15/2011} -- ihird [aiibratinn Event 15/25 /2011} — Desian 5to- 2031 DFW Generation The 2031 DWFs were generated using population data derived from traffic analysis zone (TAZ) population based projections and a design per capita flow rate of 80 gallons per capita per day (gped). This approach differed from the way flows were distributed for 2011 system modeling, which used water billing usage data to characterize the spatial distribution of the loading, and flow monitoring data to determine the magnitude of the loading. In order to assign the projected TAZ population based flows to the sewer system, the TAZ GIS polygons were compared with the major sewer basin areas. A new GIS layer was created in which the TAZ polygons and major sewer basin polygons were intersected in order to create smaller polygons. The result of this process was a GIS shapefile composed of polygons in which each area identified a subset of each unique TAZ polygon and each sewer 11- 1261.411 Page 3 -17 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan basin. The polygons in this new layer are referred to as "sub- basins" (discussed in the "Wet Weather Flow Generation - Model Loading" previously in this section). These sub- basins, shown in Figure 3 -17, provide a means of defining areas in the system that belong to a TAZ area (for assigning future population values), and which also belong to a single major sewer basin. After creating the sub - basins shapefile, it was necessary to determine how to assign the flow generated from each sub -basin to the model. Each sub -basin was therefore associated with the most downstream model manhole in the portion of the model network that overlapped with the sub - basin. In some cases where there was no single most downstream manhole within the sub - basin, the areas were further refined. In those situations, the sub -basin was divided further into smaller sub - basins until each one (1) overlapped with one (I ) single area of the system, allowing it to be associated with a common model node. For the sub - basins located in areas of the system not currently sewered, estimates of how to connect these areas to the system in the future were made after examining other available information, such as land contour elevations. The projected 2031 population of each sub -basin was based on the 2030 TAZ population distribution. A check was also performed to ensure that the total 2030 population calculated for all sub - basins within a single TAZ polygon was equal to the 2030 population value of that TAZ polygon. The City Airport property was treated uniquely compared with other areas of the City. The assumption was made through consultation with City staff, that the airport area would have no future residential population growth associated with it, and any TAZ based per capita increase associated with the property was manually redistributed to other sub - basins. After calculating the 2031 sub -basin populations, a flow rate for each sub -basin was calculated by multiplying the population by the future loading rate of 80 gpcd. When applying the 2031 DWF estimates by sub -basin to the model, the spatial distribution of the DWF applied for the existing conditions scenario was preserved, where possible. When a sub -basin overlapped with an area of the system that had existing DWF loading applied (based on water billing usage records), it was uniformly scaled such that the new total model DWF in that sub -basin was equal to the total desired DWF amount as calculated from the 2031 population estimate and the 80 gped loading rate. When a sub -basin did not overlap with any existing DWF in the model, then the entire 2031 DWF amount was loaded to a manually assigned manhole(s). This manhole(s) was identified as the likely connection location(s) for areas outside of the existing network. To assign future industrial wastewater flows, a second methodology was used. Industrial areas within the City were defined using current zoning information. Industrial flows were assigned by using a 1,500 gallons per day (gpd) per acre based on the assumptions defined in Section 2. Projected industrial flows were manually assigned to manholes that were identified as likely connection points for areas outside the existing collection network. 11- 1261.411 Page 3 -18 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan 2031 Wet Weather Flow Generation As discussed previously in the "Wet Weather Flow Generation — Model Loading" section of this report, the RTK rainfall -runoff model used to generate model WWF loading requires a "sewershed area" parameter to be defined as input, which is used to scale the magnitude of the generated runoff in the model. For generating WWF in the existing conditions model, the process used defined sewershed area values for all model manholes that served as connection points to sub - basins that intersected with the 20 -foot pipe buffer shapefile. Sub - basins that did not overlap with any significant amount of existing pipe representing areas to be served in the future, but are not currently served, did not generate any WWF to the system. In other words, all WWF loading in the existing conditions model originated from sub -basin areas that are served by the collection system. However, when defining the WWF loading for the 2031 conditions model scenario, it was necessary to make an assumption about how to incorporate I/I into the collection system from the sub -basin areas not currently served. To accomplish this, first sewershed ratio values were assumed for each of the major sewer basins that did not overlap with any significant amount of the existing collection system (for these major sewer basins it was not possible to calculate a sewershed ratio directly as a ratio of the pipe buffer area to the total basin area). Then, sewershed area values were calculated to create a system -wide value (excluding the airport area) that would be applied to future basins. These sewershed area values were then applied to the model manholes at the identified connection points to the system for each future sub - basin. III is assumed to be small for the majority of the system. However, the downtown area is older and based on input from City staff, is assumed to have more 1/1 from roof drains connected to the sewer. The City is planning to determine and address the direct connection of stormwater facilities to the sewer collection system through the recommended flow monitoring in the downtown area, as identified in the Summary of Collection Deficiencies. The City's intent is to disconnect any direct connection of stormwater facilities to the sewer collection system as they are found. Table 3 -6 lists the sewershed ratios used for the sub - basins within each major sewer basin that generated WWF in the existing and 2031 scenarios. The table also notes whether the ratio value was calculated using an intersection with the 20 -foot pipe buffer shapefile, or was based on applying a system -wide average where no collection system currently existed. 11- 1261.411 Page 3 -19 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Table 3 -6 Sewershed Ratios Basin Naive Existing Condition Scenario 2031 Condition Scenario Sewershed Ratio Source Sewershed Ratio Source East Service Area 0 Pipe Buffer 0.006 Average Hillsboro Interceptor 0.018 Pipe Buffer 0.018 Pipe Buffer North Court St. 0.002 Pipe Buffer 0.1 Average Northwest Service Area 0 Pipe Buffer 0.1 Average PRL 0.184 Pipe Buffer 0.184 Pipe Buffer PSC1 0.116 Pipe Buffer 0.116 Pipe Buffer PSC2 0.113 Pipe Buffer 0.113 Pipe Buffer PSC3 0.124 Pipe Buffer 0.124 Pipe Buffer PSC4 0.15 Pipe Buffer 0.15 Pipe Buffer PSC5 0.091 Pipe Buffer 0.091 Pipe Buffer PSC6 0.136 Pipe Buffer 0.136 Pipe Buffer Road 100 Interceptor 0.159 Pipe Buffer 0.159 Pipe Buffer Road 40 East Interceptor 0.006 Pipe Buffer 0.006 Pipe Buffer Road 44 Interceptor 0.113 Pipe Buffer 0.113 Pipe Buffer Road 68 Interceptor 0.108 Pipe Buffer 0.108 Pipe Buffer Road 84 Interceptor 0.053 Pipe Buffer 0.1 Average Sacajawea Park Road Interceptor 0 Pipe Buffer 0.006 Average Southeast Pasco Trunk 0.014 Pipe Buffer 0.014 Pipe Buffer West Pasco Trunk 0.053 Pipe Buffer 0.1 Average System Criteria for Deficiencies and Improvements The City criteria for determining collection system deficiencies are shown in Table 3 -7. This information was developed from applicable industry standards and where applicable the Criteria for Sewage Works Design, Washington State Department of Ecology, which references the "Recommended Standards for Wastewater Facilities." 11- 1261.411 Page 3 -20 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Table 3 -7 Collection System Criteria Criteria Dry Weather Wet Weather d/D (water depth/diameter), < 0.9 < LO gravity pipeline Surcharge clearance in no surcharging 2.0 feet from rim manhole Surcharge clearance in shallow manhole (difference between pipe crown no surcharging 0.5 feet from rim elevation and rim elevation is less than 2.0 feet Minimum cleansing velocity, gravity pipeline and force main (considered for new 2 ft/sec 2 ft/sec pipelines only, minimum pipe diameter of 8 inches) Maximum velocity, 10 ft/sec 15 ft/sec gravity pipeline Maximum velocity, 6 fusee* 8 ft/sec* force main Peak hour flow must peak hour flow must not exceed Lift Station Capacity, not exceed lift station capacity with largest lift station pumping capacity with firm and total capacity pump out of service all pumps in service (total (firm capacity). capacity, 10 -year design storm). * used as a guideline but will not determine a deficiency in all cases System Analysis InfoSWMM functionality was used to create and store multiple model scenarios pertaining to the model calibration and the subsequent deficiencies analysis. Once the model calibration process had been completed, the next step was to configure the model for running the deficiency simulations. A number of existing and 2031 dry and wet weather scenarios were set up for the deficiency analysis. The following changes were made to the base "calibrated" model: 11- 1261.411 Page 3 -21 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan The calibrated DWF was increased by 5 percent, from approximately four (4) MGD to 4.2 MGD, in order to attempt to approximate peak DWF conditions in the design scenarios. + One (1) MGD of industrial flaw was added as a constant load to the East Interceptor at two (2) injection points (0.5 MGD applied to each). This loading was added to evaluate the capacity to serve new industrial customers that will be coming into the system in the near future. + For the WWF scenario, the SCS Type lA 10 -year design storm was loaded into the model. In addition to the existing condition design scenarios, alternatives were created in which the DWF and WWF flows were replaced with the 2031 loading. Table 3 -8 lists a summary of the total flows applied as input to the model for each of these four (4) system analysis scenarios, as well as the average and peak simulated flows in the model at the WWTP. Table 3 -8 Overview of Model Design Scenarios and FIows Simulations of these four (4) scenarios were run and the results were checked for the presence of deficiencies. In general, there were very few capacity related deficiencies identified in the analysis under existing or 2031 conditions. This suggests that the collection system is adequately sized to convey existing and future flows in almost all areas of the system. A number of specific deficiencies were found during this analysis and are summarized below. 11- 1261.411 Page 3 -22 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Total System Flows Applied as Simulated Flow at WWTP Scenario Description Input to the Model (MGD) (MGD) Residential Industrial WWF Total Average Peak DWF DWF Existing DWF increased to 4.2 MGD, DWF to estimate maximum daily 4.2 1.4 - 5.6 5.4 8.7 flow conditions Existing DWF, with WWF Existing generated from sub - basins 4.2 1.4 1.4 7.0 6.7 12.3 WWF that cover the existing collection system 2031 DWF DWF generated from 7.3 4.1 - 11.4 11.2 19.3 estimated 2031 population 2031 2031 DWF, with WWF generated from all sub - basins 7.3 4.1 1.7 13.1 12.7 23.2 WWF (excluding Airport area) Simulations of these four (4) scenarios were run and the results were checked for the presence of deficiencies. In general, there were very few capacity related deficiencies identified in the analysis under existing or 2031 conditions. This suggests that the collection system is adequately sized to convey existing and future flows in almost all areas of the system. A number of specific deficiencies were found during this analysis and are summarized below. 11- 1261.411 Page 3 -22 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan A number of specific areas in the older downtown area of the City were identified as "approaching" capacity, but were not actually deficient based on the criteria. These areas were discussed with City staff and in many cases the manhole depths were field verified. Two (2) of the overall recommendations are focused specifically on the downtown area; 1) continue collection of survey grade elevation data, and 2) perform focused sewer flow testing. The City has acknowledged that additional data collection and as -built verification should be completed to assess the overall accuracy of elevation data in some areas due to concerns over the various datums used in the past. It is also suspected that the downtown area contains the most opportunities for precipitation induced inflow to enter the system through direct rooftop drain connections and some possible stormwater connections. This area of town also contains the oldest piping in the system, which may be most prone to cracks allowing inflow or even periodic infiltration to enter the system. Existing Conditions Analysis Results The following section provides a bulletized list of deficiencies or "watch" areas identified during each specific modeling scenario. Existing Peak Dry Weather Flow • Full Pipe Conditions downstream of the Pearl Street Lift Station (Pipes 10450 to 10370), see Figure 3 -18. (Deficiency) Existing Peak Wet Weather Flow • Full pipe conditions downstream of the Pearl Street Lift Station (Pipes 10450 to 10370) (Deficiency) • Areas in downtown show full pipe conditions, but no actual surcharging (Watch) Future (2031) Conditions Analysis Results 2031 Peak Dry Weather Flow • Full Pipe Conditions downstream of the Pearl Street Lift Station (Deficiency) • Piping along Road 44 above 0.8 d/D (Deficiency) • 9th and Washington Lift Station cannot convey peak DWF under firm capacity (Deficiency) • Maitland Lift Station cannot convey peak DWF under firm capacity (Deficiency) 2031 Peak Wet Weather Flow • Full Pipe Conditions downstream of the Pearl Street Lift Station (Deficiency) 11- 1261.411 Page 3 -23 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan a Piping along Road 44 and Argent Road show d/D >1.0, but does not overflow (Watch) a Several pipes upstream of 9th and Washington Lift Station shown with d/D >1.0 (Watch) a Some areas in downtown show full pipe conditions, but no actual surcharging (Watch) Lift Station Capacity Analysis Table 3 -9 shows an analysis of the dry and wet weather loadings and the capacities for the existing lift stations. For both 2011 and 2031 conditions, the average DWF, peak DWF and peak WWF was determined from the model simulation results. For the modeled lift stations, the bold flow values shown in the table were extracted directly from the simulation results. The flows for each of the non - modeled lift stations were represented in the model as loading at the points where their force mains connect to the gravity system. These model - loading values were used to estimate the flows for these lift stations. The capacities listed in Table 3 -9 range from the design point flow for a single pump to the sum of the design point flows for all pumps, which is the total pumping capacity. The firm pump capacity represents the capacity of the lift station with the largest pump off line. The actual total capacity will be less than the upper limit of this range. To validate actual flow requires performing flow testing at each lift station. All City lift stations are adequately sized to convey existing flows. All of the City's smaller lift stations were found to have adequate capacity to meet the design criteria under 2011 and 2031 conditions. Three (3) of these lift stations appear to be significantly oversized based on the available information presented. The Airport Lift Station serves a small area with limited information on sewer discharges; it is recommended that during future maintenance that flow testing be completed to confirm average and peak flows. The Pennie Avenue Lift Station also serves a small area with limited information on sewer discharges. The Road 84 & Argent Lift Station is a temporary facility with future flows being conveyed to the south within the next 20 years. The over sizing of these lift stations is due to developers sizing for buildout. The flows estimated for these areas represent the short term growth and not the planned build out flows. The projected 2031 peak DWFs at the main pumping facilities located at Maitland and 9th and Washington, exceed each station's firm capacity. These lift stations will require upgrades as peak DWFs near firm the firm capacity of each station. These upgrades might be considered in conjunction with regular pump related maintenance or replacement in the next 20 years. 11- 1261.411 Page 3 -24 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Table 3 -9 Lift Station Capacity Summary Name Total Pumping Capacity (gpin) Firm Pumping Capacity m Average DWF (RPM) Peak DWF m Peak WWF m 2011 2031 2411 2031 2011 2031 Airport 300 150 1 1 1 2 14 14 Road 36 & Burden 750 375 1 48 146 84 259 96 270 Na Base 500 250 2 52 3 115 40 124 Pearl St. 1600 800 161 187 248 287 258 296 Pennie Ave. 170 85 9 5 14 8 14 8 Maitland 7,275 4,850 1,450 3,220 2,344 5,784 2,389 5,850 9th and Washington 10,400 6,800 2,519 4,874 3,744 7,296 6,153 9,276 Road 84 & Ar ent 880 440 3 6 7 Rivershore 880 440 9 12 12 17 15 37 Three Rivers 1200 600 17 102 29 177 38 338 Modeled Lift Stations are noted in Bold Capitol Avenue and Conimercial/Kahlotus Lift Stations were not included since they are currently not in service. Condition and Odor Issues The City is experiencing odor and corrosion problems in specific portions of the collection system. The hydrogen sulfide corrosion has degraded portions of the collection system and is suspected of damage in others. Through on -going closed circuit television and inspection, the City has identified approximately 34,000 feet of collection system piping that should be evaluated. There are two (2) primary sections of concern. The first is along 44th Street from Dradic Street to Sylvester Street continuing along Sylvester Street to Road 36, then along Road 36 and the Columbia River to US 395. This comprises approximately 13,000 feet of primarily 21 -inch to 36 -inch diameter pipe. The second section of piping is the main interceptor along the river between I -182 and Road 64, which comprises 21,000 feet of 18- inch to 36 -inch diameters. See Figure 3 -19 for the location of these areas within the City. Typical causes of hydrogen sulfide corrosion in sewers are associated with warmer seasonal temperatures coupled with slow moving sewage that allows anaerobic bacteria to reduce sulfate ions to sulfide ions, creating hydrogen sulfide gas. Corrosion occurs when the hydrogen sulfide reacts with moisture in the crown of the pipe resulting in sulfuric acid that attacks concrete pipe and manholes. The hydrogen sulfide gas also has a rotten egg smell that can result in odor problems in areas were the gas is at elevated concentrations. Summary of Deficiencies The following is a summary of the deficiencies that were identified through the hydraulic capacity simulations. Section 6 will address the summary of the alternatives analysis and recommendations for these deficiencies. 11- 1261.411 Page 3 -25 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan Table 3 -10 Summary of Collection Deficiencies Location Description of deficient Timeframe Gravity Line Downstream Dry Feather d/D > 1.0 as a result of Pearl Street Lift Station of inadequate gravity collection Existing deficiency system capacity Argent Road and Road 44 Dry weather d/D > 1.0 as a result By 2031 or as Interceptor of inadequate gravity collection development dictates system capacity 9th and Washington Lib Inadequate Firm Capacity y y 2031 or as Station development dictates Maitland Lift Station Inadequate Firm Capacity By 2031 or as development dictates In addition to the defined deficiencies the following is a summary of recommendations for consideration for the City. These recommendations include gathering additional information to help further access the capacity and condition of the collection system in the future. 1. Complete additional flow monitoring at specific locations in the system under wet weather conditions including the purchase of flow monitoring equipment that could be moved throughout the system or used for long -term monitoring at specific locations. Initial efforts should focus on identifying the wet weather response (III) in the downtown area. This effort should focus on locating and removing any direct connection to the sewer collection system by stormwater facilities. 2. Perform flow tests as part of additional flow monitoring at each lift station to identify firm and total pumping capacity. 3. Collect the remaining manhole and pipe inverts that were interpolated for this project using survey grade equipment. Update the hydraulic model with the complete survey data. Consider a longer -term project to collect inverts and rims on all system manholes and pipes. 4. Develop GIS layers for collection system information that will assist in the City to better manage the collection system infrastructure. 11- 1261.411 Page 3 -26 City of Pasco May 2014 Collection System Analysis Comprehensive Sewer Plan 4 X12 1 IA Icl i Legend _;- EN 0 Flow Monitor Location _ Wastewater Treatment Plant = �� Gravity Pipe 8 " or less we — 10" to 12" Sta — 14" to 18" — 20 " to 24" 26" to 36" ---• Force Attain City Limit = Parcel River 0 2,000 4,000 Feet — d I MSA.Comprehensive Server Plan �J�I+a E Figure 3 -1 1 r ham,} � I�ryrµ' Flow Monitoring Locations Legend r 7NMWastewater Treatment Plant Parcel River 0 2,500 5,000 Feet Comprehensive Sewer Plan Figure 3-17 MSA Sewer Sub-Basin Areas % J, 1F SO d 110� 4 Tr Legend r 7NMWastewater Treatment Plant Parcel River 0 2,500 5,000 Feet Comprehensive Sewer Plan Figure 3-17 MSA Sewer Sub-Basin Areas � I _ Pead st E L7Man - -- �— — --• er Treatment Plant n D} . - 0 250 500 Feet SA "y Figure 3 1 , ' ; Comprehensive Sewer Plan w�E Surcharging ng of c7' At IK , "` Existing Conditions f Diversion Manho & q Y New Lift Station � T -- - - _ — = 4 < ad 36 & Burden Rivershor 1 Capitol Ave. Repair �%ad84 &Argent , - I AF rt avy y m Upgrade Lift Station _ And Force Main „ i z g ? Long Term Corrosion and Odor Control Road 44 m66al(Kahlotu West Pasco Trunk Sewer Repair Long Term Corrosion and Odor Control West Pasco Trunk ' 9th in' nand R Legend Upgrade Lift Station Upgrade Lift Station Effl Wastewater Treatment Plant Ks Lift Station — Force Main C7 City Limit � Parcel River 0 2,000 4,000 Feet M,SA Comprehensive Sewer Plan - Figure 3 -19 1 P Collection System 11f $ Styoa�, Capital Improvement Projects 1 �eim� lnc s SI it IVE Road 36 & Burden _j Y~ LR.WS4 Arge nt a N i Legend B Wastewater Treatment Plant " M Lift Station Odor and Corrosion Concern 1.., to., - 21 "� -� 30r1 Gravity Pipe C-1 City Limit Parcel�I River 1� 0 2,000 Feet { i M.SA Figure Odor ' Comprehensive Sewer Plan w�� Areas of f Odor and Corrosion Concern Section 4 SECTION 4 WASTEWATER TREATMENT CAPACITY ASSESSMENT Introduction This section presents a summary of the capacity analysis performed for the City of Pasco's (City) existing municipal wastewater treatment plant (WWTP). This analysis was based on previous WWTP capacity analysis by HDR Engineers augmented by a review of individual treatment process loadings, overall system hydraulics and state redundancy requirements. The results of this review are presented below, organized into the three (3) limit classes that we investigated - 1) unit process, 2) hydraulic and 3) reliability/ redundancy limits. The resulting existing WWTP capacity estimate is summarized at the end of this section. Existing Treatment Process The existing WWTP processes are grouped into three (3) main treatment categories: primary, secondary, and solids treatment. All of the treatment groups comprise unit processes that carry out distinct functions necessary for the treatment of the City's raw wastewater. A description of the unit processes and functions are presented in Section 1. A process flow schematic of the City's existing WWTP is provided in Figure 4 -1. 11- 1261.411 Page 4 -1 City of Pasco May 2014 Wastewater Treatment Capacity Assessment Comprehensive Sewer Plan Figure 4 -1 City of Pasco WWTP Schematic 11- 1261.411 May 2014 (ysl arinorj S�,.tl gc ir'; ?EI "n A_t.a.cd Si"gq -. MJ�vaslE�7Eer b,s^ ^arse ;� Q�yesl ed Si��r�e Page 4 -2 Wastewater Treatment Capacity Assessment City of Pasco Comprehensive Sewer Plan Unit Process Capacity This section presents the methodology and results of the unit process capacity evaluation completed for the City's WWTP. Individual unit processes and treatment systems were evaluated using industry standard design criteria to identify performance and capacity limits. Typical design standards from the following references were used to review and estimate unit process performance and /or capacity limits. • "Criteria for Sewage Works Design." (2008). Washington State Department of Ecology (Ecology), Olympia, WA, aka "Orange Book ". • "Manual of Practice No. 8, ASCE Manual and Report on Engineering Practice No. 76, 5th Edition, Design of Municipal Wastewater Treatment Plants" Water Environment Federation, Alexandria, VA and American Society of Civil Engineers, Reston, VA. • Metcalf and Eddy, Inc., Tchobanoglous, G., Burton, F.L., and Stensel, H.D. (2003). "Wastewater Engineering Treatment and Reuse," 4th Edition, McGraw -Hill, New York, NY. • 10 States Standards: Recommended Standards for Wastewater Facilities ", 2004 Edition. Health Research Inc., Albany NY. The performance and capacity assumptions used were reviewed against existing information (daily monitoring and process control reports) to check their accuracy. A plant mass balance approach was then used to predict unit process and overall WWTP loadings above existing flows and Ioads. The design criteria used in the process capacity analysis are summarized in Table 4 -1. 11- 1261.411 Page 4 -3 City of Pasco May 2014 Wastewater Treatment Capacity Assessment Comprehensive Sewer Plan Table 4 -1 Unit Process Design Criteria Unit Process Parameter Capacity Limit Source Screens Maximum Flow Rate, each 10.3 m d Manufacturer Limit Grit Chamber Maximum Flow Rate, each 7.5 m d Manufacturer Limit Primary Clarifiers Overflow Rate, Average 1,000 d/ft Orange Book, M &E Overflow Rate, Peak 2,500 d/ft' Orange Book, M &E Trickling Filter BOD Loading 70 lb -BOD /1,000 ft'/day M &E, WEF MOP 8, Plant O erations /Desi n Intermediate Clarifier Overflow Rate, Average 550 gpd1ft7 M &E, WEF MOP 8 Aeration Basins Mixed Liquor Suspended Solids < 2,000 mg /L Plant Operations/Design *, 10 State Standards Solids Retention Time (SRT) < 3 days Plant Operation s/Design BOD Loading 65 lb -BOD /1,000 ft3 /day M &E, WEF MOP 8, Plant O erations /Design Aeration System Blower Capacity 14,550 scfm Manufacturer Limit Diffuser Grid Capacity 13,376 scfm Manufacturer Limit Secondary Clarifiers Solids Loading Rate, Average 22.5 lb /sf /da M &E, WEF MOP 8 Overflow Rate, Peak 1,200 g d/f Orange Book, M &E UV Disinfection Flow Rate 21 m d Manufacturer Limit DAFT Solids Loading Rate 19.2 lb /sf /da M &E, Orange Book Anaerobic Digestion Hydraulic Residence Time 30 day total /15 -day firm Orange Book, M &E, CFR 503 Rotary Screen Thickener Maximum Flow Rate, each 200 gpm Manufacturer Limit Drying Bed Solids Loading Rate 20 lb/ft'/Year & 20% min Dry Solids Orange Book, M &E * Capacity limit listed influenced by existing facility operation and %r original design basis. 1 1- 1261.4 t 1 Page 4 -4 City of Pasco May 2014 Wastewater Treatment Capacity Assessment Comprehensive Sewer Plan RESOLUTION NO. A RESOLUTION accepting the Comprehensive Sewer Plan prepared by MSA Associates. WHEREAS, the city presently treats approximately 5 MGD to the city's population is expected to continue to grow; it is projected to treat 12 MGD in the next 20 years; and WHEREAS, the city sanitary system has approximately 250 miles of collection system and 12 lift stations; WHEREAS, wastewater is treated under ecology and EPA standards before it is discharged to the Columbia River; and WHEREAS, the EPA and Ecology standards and requirements are changing the master plans has outlined a C1P list to address the regulatory requirements and to address capacity improvements for future growth; and WHEREAS, the city recognizes the increasing need to preserve and conserve its sanitary sewer system; and WHEREAS, the city's consultant, MSA Associates, has studied the city's sanitary sewer system and has developed a management plan designed to optimize long -term use of the city's WWTP, collection system and regulatory requirements; NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF PASCO, WASHINGTON, DO RESOLVE AS FOLLOWS: Section 1. That the City Council hereby accepts the Comprehensive Sewer Plan prepared by MSA Associates, attached hereto as Exhibit A, to be used as a guide by staff and Council in making various decisions about the city's sanitary sewer system. PASSED by the City Council of the City of Pasco at its regular meeting this day of .2014. Matt Watkins, Mayor ATTEST: APPROVED AS TO FORM: Debra Clark, City Clerk Leland B. Ken, City Attorney 1 i✓3L `AIZ 1 MIN1 C) F FC0LC1'CjY" iWo,, "w 9r•.••fi w `x� 5i�.�eii ±:, washill €Jrl 99 os P,'V.; June 11, 2014 Mr. Ahmad Qayoumi, P.E. Public Works Director City of Pasco PO Box 293 Pasco, WA 99301 RE: City of Pasco Comprehensive Sewer Plan — NPDES Permit No. WA - 0044962 Dear Mr. Qayoumi: The Department of Ecology (Ecology) APPROVES the revised Comprehensive Sewer Plan dated May 2014 and received in our office on May 16, 2014. This approval is in accordance with RCW 90.48.110 and Chapter 173 -240 WAC. The City of Pasco (City) must notify this office immediately of any proposed changes or revisions to the approved documents. The City must provide changes or revisions in the form of addenda, technical appendices, or supplemental reports to the original approved package of documents to Ecology for review and approval. Additionally, the City must maintain copies of the approved engineering report, plans and specifications, operations and maintenance manual, permit, and Discharge Monitoring Reports (DMRs) on -site at your facility in Pasco, Washington. Ecology's review and approval of these documents only assures compliance and consistency with the appropriate rules, regulations, guidelines, planning and design criteria, terms of any loan agreement, and/or other similar documents and is not a quality control check. The City should not consider this approval as satisfying other applicable federal, state or local statutes, ordinances or regulations. Please contact Eleanor Key, P.E. at (509) 329 -3519 if you have any questions or need additional information. Sincerely, LIGJtrO, rA James M. Bellatty Section Manager Water Quality Program JMB:DW:jab cc: File, Ecology/Eastern Region FOR: City Council TO: Gary Ci Ahmad AGENDA REPORT NO, 16 Manager 1 lic Works Director FROM: Michael A. Pawlak, City Engineer � r SUBJECT: Reject Bids — 4th Avenue Block Wall Project #C7- ST- 9A -12 -01 I. REFERENCE(S): June 11, 2014 Regular Mtg.: 6/16/14 1. 4th Ave Block Wail - Vicinity Map 2. 4th Ave Block Wall - Bid Summary II. ACTION REQUESTED OF COUNCIL / STAFF RECOMMENDATIONS: 06/16: MOTION: I move to reject all bids for the 4th Avenue Block Wall Project in as much as all of the bids received significantly exceeded the Engineer's Estimate and approved project budget. III. FISCAL IMPACT: Community Development Block Grant IV. HISTORY AND FACTS BRIEF: A) The 4th Avenue Block Wall project included the construction of a 287 -foot wrought iron and masonry block estate wall and landscaping restoration. B) An invitation to bid the project was forwarded to applicable contractors listed on the City's Small Works Roster. Bid documents were requested by and sent to two (2) companies. A bid opening was held on May 29, 2014. V. DISCUSSION: A) The low bid was received from Bulls Eye Fencing in the amount of $45,612.00. The second lowest bid was received from AllStar Construction Group, Inc. in the amount of $93,815.20. The Engineer's Estimate for the project was $31,558.00. B) Staff has reviewed the bid proposals and determined that the bids exceed the fiscal constraints of the project. C) Staff, therefore, respectfully recommends that Council reject all bids due to current fiscal constraints. 1O(a) VICINITY MAP SCALE: NONE 93 A r r W AGATE ST Y ►.._is ESPY— ':..3ii�M�IL1 ""� i' „a� -�i�i1 IlY�3W4.� � � ... jA�,i' l �4 ,yP y r t� PROJECT LOCATION Y ST An µ COURT' , �-W, COURT ST`S 'F7 "MOW &M $/ry7ora =41L. 9+ er flf� Atl STNF City of Pasco 4'h Avenue Block Wall Project #C5- ST- 9A -12 -01 May 29, 2014 BID SUMMARY Engineers Estimate Bulls Eye Fencing $31,558.00 $45,61 2.00 A11Star Construction Group $93,815.20 AGENDA REPORT NO. 13 FOR: City Council TO: Gary Crutch 1 Manager Ahmad Qayou ', u lic Works Director FROM: Michael A. Paw ak, City Engineer SUBJECT: Bid Award: Waterline Extension — Broadmoor Tank Project #C7- WT- 2A-13 -02 I. REFERENCE(S): June 11, 2014 Regular Mtg.: 6116/14 1. Waterline Extension - Broadmoor Tank - Vicinity Map 2. Waterline Extension- Broadmoor Tank - Bid Summary II. ACTION REQUESTED OF COUNCIL / STAFF RECOMMENDATIONS: 06/16: MOTION: I move to award the low bid for the Waterline Extension - Broadmoor Tank Project to KBEC, LLC in the amount of $114,757.61, and further, authorize the Mayor to sign the contract documents. IIL FISCAL IMPACT: Water Rates IV. HISTORY AND FACTS BRIEF: A) The project involves the installation of approximately 559 linear feet of 16 -in ductile iron water main on Broadmoor Boulevard. B) The project was advertised on February 16 and 23, 2014 and again on May 18, 2014 with a bid opening held on May 28, 2014. V. DISCUSSION: A) On May 28, 2014, the City received three (3) bids for the project. The low bid was received from KBEC, LLC in the amount of $114,757.61. The second low bid was received from D &D Tri- Rivers Excavating in the amount of $129,884.51. The Engineer's Estimate is $118,123.13. The bid is within the available project budget. B) Staff has reviewed the bid submittal and found no exceptions or significant irregularities. C) Staff recommends award of the contract to KBEC, LLC in the amount of 114,757.61. 10(b) i VJCINITY MAC' r t 4 PROJECT AREA �- BURNS RD NIOTTINGHA_M DR #•,. 'x` SUC,KINGHAM DR' _. Or • -. a 6 '""'d _.Y � r • "�j � � i�'"' �nwrG• LL Y SANAtFsl. PAF2K • , �. + �,T. yYlF,�` Fin SATE 2, 90 4 sfxtr' Y City of Pasco Waterline Extension — Broadmoor Tank Project #C7- WT- 2A -13 -02 May 28, 2014 BID SUMMARY Engineers Estimate KBEC, LLC D &D Tri- Rivers Excavating $118,123.13 $114,757.61 $129,884.51 Big D's Construction $185,727.72