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Home My WebLink AboutPACE Engineers, Inc - PWRF Land Treatment Expansion Study - Amendment No. 3 (#20-034)AMENDMENT NUMBER 3 to PROFESSIONAL SERVICES AGREEMENT PWRF Land Treatment Expansion Study Agreement No. 20-034 WHEREAS, the City and PACE Engineers, Inc. entered into a Professional Services Agreement on 8/18/2020 to provide engineering services with respect to the PWRF Land Treatment Expansion Study. NOW, THEREFORE, this agreement is amended to allow PACE Engineers, Inc. to provide additional engineering services and provide for additional time of performance. Scone of Work: See Exhibit A. 2. Fee: The compensation for the additional work is based on a Fixed Fee Basis of $18,400.00, increasing the overall total authorization amount to $138,533.00 3. Time of performance: The services shall now be complete for the project on or before 6/30/2022. DATED THIS CITY OF PASCO: DAY OF 6CL'o��-7 City of Pasco Dave Zabell, City Manager , 2021. CONSULTANT R bin D. Nelson. P.E., Senior Principal Engineer Amendment No. 3 to Professional Services Agreement Page 1 PACE Engineers, Inc. Agreement No. 20-034 EXHIBIT A CITY OF PASCO PWRF LAND TREATMENT SYSTEM EXPANSION STUDY AMENDMENT NO. 3 Task 3 —Land Treatment System Assessment Additional services include the -following: The work includes out of scope tasks that were requested by the City and will be prepared by Valley Science and Engineering as'a subconsultant to PACE Engineers, Inc.. See attached scope of work provided. Total Amendment #1 = $0.00 Total Amendment #2 = $15,344.00 Total Amendment #3 = $18,400.00 Original Authorized Amount = $104,789.00 New Authorized Amount = $138,533..00 A valmont V COMPANY September 13, 2021 Robin Nelson PACE Engineers 11255 Kirkland Way, Suite 300 Kirkland, WA 98033 SUBJECT: PACE Pasco LTS Expansion: Change Order #2 Scope Dear Robin: 12720 E Nora Avenue Suite A Spokane Valley, WA 99216 P: +1509.921.0290 valleylrrigation.com/se Valley Science and Engineering (Valley) has prepared this scope of services for Change Order 2 to provide PACE Engineers, Inc. (PACE) with a summary and timeframe of the permitting process to expand the City of Pasco (City) land treatment system. This scope of services also includes an agricultural field investigation (soils investigation) that would sufficiently determine the soil health, cropping potential, and overall viability of 4 center pivot fields (Site) for successful process wastewater land treatment. Objectives This change order will achieve the following objectives: Summarize the permitting process and timeframe to expand the City's land treatment system. • Conduct a soils investigation at the Site. Scope of Work The scope of work has been prepared to achieve the objectives. Task 1 Permitting Summar Valley will prepare a detailed summary of the State of Washington Department of Ecology State Waste Discharge Permitting process required to gain approval for land treatment system expansion. The summary will include priority steps, timeframes, and potential project schedule. Each step of the permitting process will be described, including but not limited to: State Environmental Policy Act Checklist, Engineering Report and required revisions to the existing Engineering Report, hydrogeological tasks, permit application, engineering plans and specifications, and stormwater permitting. This task includes budget for one virtual meeting to review the permitting summary and share additional insights on the permitting process and likely regulatory expectations. Doc: 2020230016 PACE Pasco LTS Expansion CO2 Ltr.docx Robin Nelson — PACE Engineers PACE Pasco LTS Expansion: Change Order #2 Scope September 13, 2021 Page 2 Task 2 Soils Investigation VALLILyV A Valley soil scientist will conduct a soils investigation of the 4 fields at the Site based on the locations previously provided to Valley. In preparation for the field inspection and summary report, Valley will conduct a review of field -specific published data on the Web Soil Survey to determine the expected soil types, distribution across each field, soil depth, water -holding capacity, texture, and topography; as well as review historical satellite imagery to identify areas of potential concern. Valley will travel to each field to inspect topography, cropping areas, and adjacent areas to identify potential concerns (i.e., evidence of poor crop areas, poor drainage, areas of run on/run off, seeps, etc.); collect soil samples from multiple locations using a bucket auger; and make visual observations of the soil profile to a depth of 5 feet. While collecting samples, Valley will note soil texture, course fragment content, if any, and depth to auger refusal as appropriate. The soil samples will be collected at one -foot depth increments to 5 feet, or auger refusal, and submitted for laboratory analysis. Based on findings of the investigation, Valley may recommend soil test pit evaluations. Test pit evaluations will be recommended if auger refusal is encountered at shallow depths, poor soil drainage indications are observed, or other soil conditions are encountered that warrant further characterization. The number and location of test pits would be identified during the investigation. If test pit evaluations are needed, a Valley soil scientist will characterize the soil horizons from each test pit using United States Department of Agriculture, Natural Resource Conservation Service methodology. In addition, soil samples will most likely be collected from each soil horizon or at one -foot depth increments for laboratory analysis. Soils will be evaluated in each open test pit to 4 feet, and auger borings used to evaluate soils to an additional 6 feet, starting at the floor of the open test pit (i.e., 4 foot level, for a total maximum depth of 10 feet below the ground surface evaluated in each test pit). Valley will prepare a summary report describing applicable field observations, analytical results, and significant issues or limitations that would be of concern for land treatment. This task includes budget for one virtual meeting to review the investigation findings. The laboratory analyses of the soil samples will include the following: • Foot 1 o Comprehensive analysis (pH; organic matter; salts, electrical conductivity of saturation extract, [ECe]; macro-, micro-, and secondary -nutrients; cation exchange capacity [CEC], and exchangeable sodium percentage [ESP]) o Chlorides o Sodium absorption ratio (SAR) o Soil texture analysis (sand, silt, and clay fractions by hydrometer) Doc: 2020230016 PACE Pasco LTS Expansion CO2 Ltr.docx Robin Nelson — PACE Engineers PACE Pasco LTS Expansion: Change Order #2 Scope September 13, 2021 Page 3 • Foot 2 through 5 o Nitrate as nitrogen o Ammonia as nitrogen o Salts (ECe) o Soil texture analysis • Foot 6 through 10 o Soil texture analysis o Testing in a maximum of 3 test pits This task includes the laboratory analytical fees. vauayv Based on Valley's preliminary review of published data on the Web Soil Survey, the number of soil samples planned for laboratory analysis for each field is presented below. The planned soil samples account for both, the investigation samples and test pit evaluation samples. • Circle 3 —1 root zone profile and 1 test pit profile sampling (15 samples total) • Circle 4 —1 root zone profile and 1 test pit profile sampling (15 samples total) • Circle 9 —1 root zone profile and 1 test pit profile sampling (15 samples total) • Small Circle — Up to 1 root zone profile sampling (5 samples total) Assumptions and Limitations The following assumptions have been used to prepare the proposed scope of work and cost estimate. Should differences from these assumptions be required or encountered, Valley will discuss the project cost implications with PACE. If additional budget authorization is needed, Valley will work with PACE to obtain agreement on the additional cost or reduce the scope of services to keep the project within the original authorized budget. • PACE Engineers or the City will coordinate mobilization of a backhoe with a competent and trained operator to excavate up to two test pits per field, if needed, to a depth of at least 4 feet as directed by a Valley soil scientist. • Each test pit will be constructed by the backhoe operator according to applicable safety requirements, such as Division of Occupational Safety and Health Department of Labor and Industries Directive 27.30, Occupational Safety and Health Administration 226-1OR, and Valley Health and Safety Protocols. • PACE Engineers or the City will be responsible for identifying and avoiding any underground utilities at the test pit locations, including but not limited to irrigation piping, drainage piping, and power supply lines. Doc: 2020230016 PACE Pasco LTS Expansion CO2 Ltr.docx Robin Nelson — PACE Engineers PACE Pasco LTS Expansion: Change Order #2 Scope September 13, 2021 Page 4 VALLEY • Fields will be accessible by a 4 -wheel drive truck and walking as necessary, and conditions will be safe for sampling and investigation. • Prediction of permitting timeframes will be estimates based on previous experience and should not be considered a guarantee. The actual timeframe for permitting will depend on the quality and timeliness of data, permit application, and supporting reports, as well as the workload of the Washington State Department of Ecology staff assigned to the project. • Work will be conducted in accordance with all applicable government, PACE, and Valley protocols to mitigate spread of COVID-19. If site conditions or government imposed restrictions change, Valley will contact PACE regarding the resulting impacts to budget and/or schedule. Schedule Valley will commence work upon receipt of written authorization from PACE Engineers. The Permitting Summary will be completed within 1 month of authorization. The Soils Investigation can be completed within 1.5 months of authorization, depending on scheduling constraints related to field access and availability/mobilization of the backhoe. Thank you, VALLEY SCIENCE AND ENGINEERING David Sullivan, CCA Soil Scientist DMS/jbk Att: 2020230016 PACE Pasco LTS Expansion CO2.pdf cc: Steven Veinier — Valley Science and Engineering Doc: 2020230016 PACE Pasco LTS Expansion CO2 Ltr.docx vALLLr;V A Valmontt'VCOMPANY Date: September 13, 2021 Project Name: Land Treatment System Expansion Study Client: PACE Engineers Address: 11255 Kirkland Way, Suite 300 Kirkland, WA 98033 Description of Changes (Scope and Schedule) : PROJECT CHANGE ORDER Project #: Promo #: P202023018 CO #: 2 Telephone: 425-827-2014 Fax: Email: robin a paceen •s.com 2020230016 Valley Science and Engineering (Valley) has prepared this Change Order 2, which includes the attached cover letter, to provide PACE Engineers, Inc. (PACE) with a summary and timeframe of the permitting process to expand the City of Pasco (City) land treatment system. This scope of services also includes an agricultural field investigation to sufficiently determine the soil health, cropping potential, and overall viability of 4 center pivot fields for process wastewater land treatment. Assumptions: The assumptions and limitations of Change Order 2 are included in the attached cover letter. Changes in Contract Price: Original Contract Price Previous Change Order(s) Contract Price Prior to this Change Order: Net Increase (Decrease) of this Change Order: Contract Price with All $ 34,000.00 $ 13,700.00 $ 47,700.00 $ 18,400.00 Approved Change Orders $ 66,100.00 T HAVE, READ THIS PROJECT CHANGE ORDER and approve all changes herein. Dated: Dated: 9/13/2021 Client Signature Valley Project Manager Signature Please Print Name David Sullivan Valley Project Manager The original Contract tens, including compensation agreement (e.g., time and materWs/cosy not to exceed, lump sum) and Terms and Conditions as agreed to upon authorization of the origins! Scope of work are still in effect. Doc: 2020230016 PACE Pasco LTS Expansion CO2.xlsx 9/13/2021