2025 Leak Detection Survey - City of Hamtramck

INVITATION TO BID City of HAMTRAMCK Wayne County, MICHIGAN 2025 Water main leak detection program The City of Hamtramck, 3401 Evaline Street Hamtramck, MI 48212 is seeking bids for Water Audit Services related to a proposed comprehensive water leak and loss assessment. The proposal will consist of a leak detection survey and a final water audit master report, including recommendations. The anticipated start date, weather permitting is June 15, 2025, and substantially completed by August 15, 2025, and final completion by August 31, 2025. This project is funded through an ARPA Grant. The project requires Davis Bacon prevailing wages. Minority Business Enterprises (MBE), Disadvantaged Business Enterprises (DBE) and Women-Owned Business Enterprises (WBE) will be afforded full opportunity to submit bids on this contract and will not be subject to discrimination on the basis of race, color, national origin, or sex in consideration of this award. Task 1: Leak Detection Survey The leak detection survey will cover the entire 43 miles of water mains in the City, which consists mainly of cast iron pipes. There are 451 hydrants and 570 valves throughout the system. The survey will be accomplished by using acoustic amplifying equipment (e.g., FCS S-30 Surveyor) to listen along the pipelines. Personnel will listen on appurtenances such as hydrants, valves, and other direct contacts to the system. If excessive ambient background noise precludes effective survey work, the contractor shall reschedule that portion of the survey to a suitable time, such as nighttime hours. Any change of schedule will be pre-approved with the City of Hamtramck. No additional compensation will be made to the contractor for these situations. The above acoustic amplification process should yield the identification of leaks within approximately ten feet of the source. As part of the survey, personnel will also identify map corrections on Hamtramck's section maps and submit weekly progress reports to the City. Task 2: Water Audit Report On completion of the comprehensive water audit task work, a final report containing documentation of all data collected and the work performed will be submitted to the City. The report will include results, conclusions, and recommendations for reducing unaccounted for water, improve operational efficiency, increase revenue, and reduce expenses. Results and recommendations are to be based on established AWWA standards for best management practices for water utilities. These best management practices incorporate operational, financial, and water resources performance indicators to set long-term leakage reduction targets. Such indicators will include: The unavoidable annual real losses (UARL) representing the technically low level that could exist in the system if it successfully applies the current BMP's for leakage management. annual real losses divided by the UARL. (ILI between 2 and 8 is considered reasonable leak control).