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SR-504-004 (2) , 5t?7"'-oo~ "-I GS:SES:DA:bat (CCWASTE) council Meeting: March 27, 1990 MAR ~ , \990 Santa Monica, California To: Mayor and City Council From: City staff -. (~"lJ.1 y~ .,')()~l-Ua '1 Subject: Recommendation to Authorize the Negotiate and Execute a Contract wi Consulting Engineers for a Landfill and Landfill Gas Recovery Feasibi" Santa Monica Landfill in the amount l/ S ; "",,, ~""-" ('V"-~ ! . ~~({ INTRODUCTION This report recommends that the city Council authorize the City Manager to negotiate and execute a contract with Dames and Moore Consulting Engineers to conduct a landfill compliance program and gas recovery feasibility study of the Santa Monica landfill in the amount of $201,040 as mandated by the State of California. BACKGROUND One of the city's budgeted capital projects is the implementation of a landfill compliance and gas recovery feasibility study for the old city landfill located at 2500 Michigan Avenue. The City Council appropriated funds in the amount of $250,500 to conduct this study in the Fiscal Year 1989-90 eIP budget. The purpose of this study is to bring the City's landfill facilities which were closed in 1970 into regulatory compliance with requirements of the state. The Calderon Act requires that a Solid Waste Assessment Test (SWAT) study be performed to characterize possible contamination of surface and ground waters, - 1 - G,-I t'I~{{ Z '7 ,qqG soil, and air within a one-mile radius of a landfill. Article 5, Subchapter 15, Title 23 of the California Code of Regulation requires ground water monitoring programs for closed landfills. The regional Water Quality Control Board which oversees compliance with these regulations requires that the SWAT study of the Santa Monica landfill be completed by 1991. The study will take approximately fifteen months to complete. The City's landfill, although closed for approximately twenty years, produces landfill gas. The study will also evaluate the feasibility of recovering this gas for a cogeneration project. The estimated cost of this study is $201,040, of which $93,000 is the cost of the landfill gas recovery feasibility portion of the study. This cost is based on the city's and Consultant's best estimate of the field work which will be required. The cost may increase if the estimated number and depth of monitoring wells and level of analytical services required to complete the study exceeds what is originally determined necessary. The study will provide the city with information on the degree of risk, if any, posed to the environment by the refuse buried in the landfill as well as provide a preliminary design for a gas collection system to mitigate any nuisance landfill gas production. CONSULTANT SELECTION Staff prepared a Request for Proposal to conduct a Master Plan Study and sent it to 9 consultants in December 1989. Staff received 7 proposals to conduct the study. A committee consisting of Stan Scholl, Director of General Services, Desi - 2 - Alvarez, city Engineer, and Neil Miller, Maintenance Manager, evaluated the written proposals and interviewed four of the firms. Following the interviews, the group recommended that Dames and Moore Consulting Engineers be selected to conduct the study. BUDGET/FINANCIAL IMPACT Funds in the amount of $201,040 are available in the following ClP Account Numbers: Water Fund 25-710-402-20890-8932-99161 $ 34,040 Refuse Fund 27-710-402-20890-8932-99161 83,500 Wastewater Fund 31-710-402-20890-8932-99161 Total 83,500 $ 201,040 RECOMMENDATION staff recommends that the City council authorize the City Manager to negotiate and execute a contract with Dames and Moore Consulting Engineers for a landfill compliance program and landfill gas recovery feasibility study. Prepared by: stan Scholl, Director of General Services Desi Alvarez, P.E., City Engineer - 3 -