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HomeMy WebLinkAboutLeak Location Services, Inc - Geomembrate Leak Location Survey of Two Ponds at PWRF (LLSI Proposal No. 3134)LEAK LOCATION SERVICES, INC. OVER 25 YEARS Mr. Derek Wiitala City of Pasco 1025 S. Gray Avenue/ PO Box 293 Pasco, WA 99301 Email: wiitalad@pasco-wa.gov November 7, 2019 Subject: Proposal for a Geomembrane Leak Location Survey of Two Ponds at the Process Water Reuse Facility near Pasco, Washington LLSI Proposal 3134 ID<-I<'. Dear Matt-, Leak Location Services, Inc. (LLSI) is pleased to submit the enclosed proposal for conducting a geomembrane leak location survey for the above mentioned site. LLSI is the most experienced geomembrane leak location firm in the world and the qualifications of our field crews are unmatched. The technical staff of LLSI have a combined total of more than 89 years of commercial geomembrane leak location experience. LLSI has performed more than 3,630 leak location surveys and surveyed more than 549,640,000 square feet of geomembrane. LLSI has successfully performed leak location surveys worldwide for more than 25 years. LLSI has provided leak location services in 47 states, eight Canadian provinces, and 28 foreign countries. In the attached proposal, your company is referred to as "Client." To engage our services for the work please reference proposal 3134 in a purchase order or contract and sign the final page of the proposal. If there are any questions regarding leak location surveys or this proposal, please contact us at (210) 408-1241. We appreciate the opportunity to be of assistance on this important service requirement. Operations Manager 16124 UNIVERSITY OAK• SAN ANTONIO, TEXAS 78249 • (210) 408-1241 / FAX (210) 408-1242 WEB: WWW.LLSI.COM EMAIL: RESULTS@LLSI.COM ~ LEAK LOCATION SERVICES, INC. OVER 25 YEARS A Proposal for: LLSI Proposal 3134 November 7, 2019 GEOMEMBRANE LEAK LOCATION SURVEY OF TWO PONDS AT THE PROCESS WATER REUSE FACILITY NEAR PASCO, WASHINGTON Approved by: ~~ President **CONFIDENTIALITY NOTICE** TfflS PROPOSAL CONTAINS INFORMATION THAT IS CONFIDENTIAL OR LEGALLY PRIVILEGED. TmS PROPOSAL AND COST QUOTE ARE PROVIDED WITH THE STIPULATION THAT TmS INFORMATION IS FOR THE EXCLUSIVE USE OF THE ENTITY NAMED ON THE COVER LEITER FOR SUBMITTING A BID FOR THE TITLED PROJECT. THE DISCLOSURE OR DISTRIBUTION OF ANY OF THE INFORMATION TO ANY OTHER PARTY IS PROHIBITED. I. INTRODUCTION This proposal offers these services for locating leaks in the primary geomembrane of the above mentioned. The ponds have a combined area of approximately 1,325,000 square feet and are lined with a single 60-mil HDPE geomembrane. The two ponds without water will be tested by the bare liner method described in this proposal. This proposal describes the work that will be performed by LLSI and the important site preparations and support to be performed by the Client for a successful leak location survey. IL QUALIFICATIONS The technical staff of LLSI have a combined total of more than 89 years of commercial geomembrane leak location experience. LLSI has performed more than 3,630 leak location surveys and surveyed more than 549,640,000 square feet of geomembrane. LLSI has successfully performed leak location surveys worldwide for more than 25 years. LLSI has provided leak location services in 47 states, eight Canadian provinces, and 28 foreign countries. 16124 UNIVERSITY OAK• SAN ANTONIO, TEXAS 78249 • (210) 408-1241 / FAX (210) 408-1242 WEB: WWW.LLSI.COM EMAIL: RESULTS@LLSI.COM City of Pasco November 7, 2019 LLSI Proposal 3134 Page 2 of 6 In 2018, LLSI completed 134 geomembrane leak location surveys. The area surveyed was more than 30,091,500 square feet (690 acres). In the last three years, LLSI has surveyed approximately 86,119,300 square feet (1,977 acres) of geomembrane. These surveys were performed in accordance with ASTM standards D7002, D7007, D7240, and D7953. LLSI field personnel have received safety training for OSHA HAZWOPER, OSHA Construction Safety and Health, OSHA 30 Hour Construction Industry Outreach, MSHA work at surface mines, SafeLand USA, confined space entry, first aid, and CPR. In addition, LLSI subscribes to the ISN, PICS, PEC, Browz, and CanQual safety programs. III. TECHNIQUE A. General The electrical leak location method detects electrical paths through the geomembrane caused by water or moisture in the leaks. A voltage is connected to one electrode that is placed in the water or soil covering the geomembrane and then to a second electrode connected to the water or soil under the geomembrane or earth ground. Electrical current flowing through the leaks in the geomembrane produces localized anomalous areas of high current density near the leaks. These areas are located by making electrical potential measurement scans in the water or soil covering the geomembrane. B. Bare Liner Survey The water puddle survey method for bare geomembranes is described in ASTM D7002. A squeegee is used to push the water over the geomembrane during the survey. A low voltage electrical supply is connected to earth ground and to the leak detector. When a hole in the geomembrane is encountered, electrical current will flow through water in the leak contacting earth ground. The current is monitored using an electronic detector that converts the increase in the current to an audible tone indication. LLSI uses a custom designed squeegee sensor with a custom designed electronic detector. The geomembrane area is systematically scanned with overlapping coverage. When a leak is detected, it is located exactly and marked for repair. The locations of leaks will be documented. To optimize the leak detection process the bare geomembrane should lay flat against the subgrade that acts as the electrical ground path for the leak location survey method. Therefore, the survey is best performed when the geomembrane is cool and not subject to wrinkles. The best time to conduct the survey work is between the hours of 10:00 P.M. and 10:00 AM. Although, this is dependent on the time of year the survey is conducted as well as the daytime temperatures during the survey. Leak Location Services, Inc. City of Pasco November 7, 2019 C. Leak Detection Sensitivi ty Test -Bare Liner Survey LLSI Proposal 3134 Page 3 of 6 The leak location survey equipment is tested for proper operation and functionality using an artificial leak or an actual hole made in the geomembrane above the operational level. The artificial leak is the end of an 18 A WG insulated wire with the other end of the wire connected to the conducting media under the geomembrane. If an actual test hole is used, it has a diameter of 0.039 inches. Proper equipment operation and functionality are demonstrated if the test hole is detected when the squeegee sensor is passed over the artificial or actual leak. The results of this test are documented. D. Reporting The general results of the survey will be reported to a designated representative of the Client during the daily progress of the field work. A list of the locations of the leaks found shall be submitted to the representative after completion of the field work and before the survey personnel leave the site. A report documenting the work and results of the surveys will be prepared and submitted within fourteen days after completion of the field work. IV. PREPARATIONS AND SUPPORT-BARE LINER SURVEY The client will be responsible for preparing the site for the survey before arrival of LLSI personnel. These preparations include: • · Provide a source of water for water puddle survey method. A small water truck is ideal. The water supply should provide 5 gallons per minute with a pressure of at least 40 psi. Standard garden hose faucet connections are required at the water source. If a small water truck is used, one laborer may be needed to drive and maintain the water pressure in the vehicle. • Provide lighting if the leak location survey is conducted at night for the water puddle survey method. One lighting trailer is required. • Provide the assistance of four supervised laborers to help with handling the water hoses and other assistance, in addition to the laborer manning the water truck. The labor support must be available during the hours that the LLSI crew is working, including working through weekends if needed. If wrinkles are excessive an additional laborer may be needed to help walk out the wrinkles as we progress. • Remove standing water from the surface of the bare geomembrane. The client is responsible for the removal of excess debris, sand bags, scrap liner, sediment, rope, and/or any other materials in the pond that might interfere with the sensitivity of the survey or create an obstruction. • Repair any leaks found for retesting if needed. Leak Location Services, Inc. City of Pasco November 7, 2019 LLSI Proposal 3134 Page4 of6 • This method of the leak location survey cannot be performed when temperatures are below freezing or with ice on the liner. V. SCHEDULE Scheduling priority is given to the earliest firm authorization to mobilize. The projected time for performing the proposed leak location survey as shown in the Cost section of this document assumes no standby time. Work and standby will continue through weekends if necessary. This proposal is valid for 90 days. VI. COST This proposal amount is based on information received from the client; if site location or survey area varies to the degree that extra expenses are incurred, the Client will be billed for the extra time in accordance with item B below. The costs for the survey work, including equipment, mobilization, survey and report with additional cost items if needed are: DESCRIPTION A. Mobilization of a two-person field crew from LLSI, expenses*, up to 80 hours of survey in five days, and report ............................. $ 28,550 TOT AL ESTIMATED COST* ................................................................... .$ 28.550 Additional Costs if Requested or Required: B. Additional survey or standby time (greater of actual time or 8 hours per day)** ........................................................................... $ 225 C. Additional round trip mobilization per technician ( extra survey hours may be required as per item B)........ ............ .. .... ....... $ 3,900 * Expenses included are: transportation, equipment shipping, local transportation, lodging, meals, and expendable field supplies. Leak Location Services, Inc. requires five business days prior notice of mobilization. If less notice is given, additional air fare charges may be incurred and billed to the client. ** If standby occurs before proposed survey hours have been depleted then the proposed survey hours are deducted from first. Any additional hours above hours proposed will be charged at the additional survey or standby rate. Applies if more than the proposed time is needed to complete the work because of lack of preparations or support, delays due to weather (lightning within four miles, frozen soil, wind chill below 15 degrees F, excessive heat (above 95 degrees F), wind speed above 25 mph, visibility below 1,000 feet, moderate rainfall or any other weather condition that would present a safety hazard), numerous leaks (more than three leaks per acre) or Leak Location Services, Inc . City of Pasco November 7, 2019 LLSI Proposal 3134 Page 5 of 6 delays caused by circumstances beyond the control of LLSI. The extra hours of work or standby will be charged at the rate listed in item B. The survey cannot be conducted with more than one inch of snow on the cover material or if any part of the cover material above or below the geomembrane is frozen. VII. INSURANCE LLSI carries comprehensive general liability, hired non-owned automobile liability and workers compensation insurance coverage with limits appropriate for construction projects of this nature. VIII .. PAYMENT Client shall pay LLSI the amount stated in Section VI of this proposal for the work which may include additional standby or survey costs. All invoices rendered Client by LLSI shall be paid within 30 days from date of invoice. Should LLSI find it necessary to employ a collection firm or attorney to collect any unpaid invoice amount, Client shall pay all fees required to collect the unpaid debt. IX. WARRANTY As with any technology, there are ultimate limits to the technology and practical field procedures. The electrical leak location method can accurately fmd the smallest electrical paths of practical interest. However, conditions may exist where an electrical path is not established through a leak because of preparations or other conditions not under the control of LLSI. LLSI also has no control over the reliability or completeness of the repairs and has no control over possible future geomembrane failures or damage to the geomembrane. For a small proportion of the total cost of a geomembrane-lined facility, LLSI cannot assume any liability for possible existing and future pollution damages and litigation costs. Nevertheless, Leak Location Services, Inc. is the most experienced in the world for field applications of the electrical leak location method for geomembranes, and the results of these applications have been outstanding. To reflect these practical realities, LLSI provides the following warranty: LIMITED WARRANTY LEAK LOCATION SERVICES, INC. WILL PERFORM THE PROPOSED WORK DESCRIBED HEREIN IN A GOOD AND WORKMANLIKE MANNER WITH THE DEGREE OF HIGH PROFESSIONAL SKILL AND SOUND PRACTICES AND JUDGEMENT THAT IS NORMALLY EXERCISED BY RECOGNIZED PROFESSIONAL FIRMS WITH RESPECT TO SERVICES OF A SIMILAR NATURE. HOWEVER, BECAUSE THE WORK INVOLVES CONDITIONS THAT ARE NOT UNDER THE CONTROL OF LLSI BEFORE, AFTER, OR DURING THE TESTING, Leak Location Services, Inc . City of Pasco November 7, 2019 LLSI Proposal 3134 Page 6 of 6 LLSI DOES NOT WARRANT THAT IT WILL DETECT, OR IDENTIFY, OR MARK ALL LEAKS IN THE GEOMEMBRANE. IN ADDITION, LLSI DOES NOT ASSUME ANY LIABILITY FOR THE DIRECT, FORESEEABLE OR CONSEQUENTIAL LOSS, COST OR DAMAGE RESULTING FROM DEATH, PERSONAL INJURIES, LOSS OR DAMAGE TO PROPERTY, OR IMPAIRMENT, OR ANY DAMAGE TO ANY RIGHT, INCLUDING BUT NOT BY ANY WAY OF LIMITATION, THE RIGHT TO BE PAID FOR THE LOSS OF TIME, LOSS OF SERVICES, FINES, PENALTIES, OR ATTORNEY'S FEES AND OTHER EXPENSES INCURRED, ARISING OUT OF OR AS A CONSEQUENCE OF THE USE OR MISUSE OF ANY SURVEY RESULTS, DATA OR OTHER INFORMATION RESULTING FROM PERFORMING THE PROPOSED SERVICES. THE PARTIES AGREE THAT ANY DAMAGES, CLAIMS, OR LOSSES INCLUDING ENVIRONMENTAL OR POLLUTION DAMAGES, CLAIMS, OR LOSSES RESULTING FROM THE WORK LLSI PERFORMS UNDER THIS AGREEMENT WILL BE LIMITED TO THE AMOUNT OF COMPENSATION LLSI HAS RECEIVED UNDER THIS CONTRACT. Accepted and authorized: Authorized Signature vd-d< u Lit6i"1 Printed N rune f)wR,£ L1~e.r1r:,..5 -h;!:J Purchase Order Number !t /8/;p Date /t,J,!,~ Watk.J ):/w-Afe!rr Title • Our company does not utilize a purchase order system. (Check box and enter NIA above) Leak Location Services, Inc .