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Y r a'. <br /> Im <br /> sF, eoogic Associates <br /> Geologists, Hydrogeologists and Engineers <br /> July 7, 2005 <br /> Job No. 2005-082 <br /> Forward <br /> 9999 S. Austin Road <br /> Manteca, California 95336 <br /> Attention: Mr. Lochlin Caffey <br /> WORKPLAN FOR MONITORING THE FINAL COVER SOILS <br /> AT THE FORWARD SANITARY LANDFILL—NORTH & NORTHWEST <br /> SLOPES FINAL COVER AREAS <br /> SAN JOAQUIN COUNTY, CALIFORNIA <br /> INTRODUCTION <br /> Geo-Logic Associates is pleased to provide Allied Waste Industries, Inc. (AWI)with this <br /> workplan for ET cover moisture monitoring at the Forward Landfill (North and <br /> Northwest Slopes) in San Joaquin County, California. This written workplan has been <br /> developed to identify the work to be performed to monitor the final cover in accordance <br /> with the specifications of the most recent Partial Final Closure and Post-Closure <br /> Maintenance Plans (BAS, 2005)prepared in support of closure of the stage lA area. <br /> PURPOSE <br /> The purpose for monitoring the final cover is to generate technical data to facilitate <br /> evaluation by governing regulatory agencies on whether the landfill final cover meets the <br /> performance standards established for closure of solid waste facilities in the State of <br /> California. <br /> The final closure of a municipal solid waste landfill is currently under the regulatory <br /> authority of several federal, state, and local agencies that have different performance <br /> standards. In California, the primary governing agencies for municipal solid waste <br /> disposal include the U.S. EPA, the California Integrated Waste Management Board <br /> (CIWMB), the California Water Resources Control Board (CWRCB), the Regional Water <br /> Quality Control Boards (RWQCB), local enforcement agencies (LEA), and the various <br /> divisions of the California Air Resources Control Board (CARCB). With the exception <br /> of the Air Resources Board, these agencies are concerned, at least in part, with the <br /> potential for environmental damage that could result from the percolation of liquids into <br /> an operating and/or closed solid waste facility. <br /> It is in response to this concern for leachate generation and potential environmental <br /> contamination that current regulations and standards of practice require that solid waste <br /> facilities install an engineered final cover at the end of their operating life. As currently <br /> 1360 Valley Vista Dr., Suite 100, Diamond Bar, CA 91765 Phone: (909) 860-3448 FAX: (909) 860-2024 <br />