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California4pgional Water Quality Con&l Board <br /> Central Valley Region <br /> Linda S.Adams Arnold <br /> Secrelaryfor Sacramento Main Office Schwarzenegger <br /> Environmental 11020 Sun Center Drive#200,Rancho Cordova,California 95670-6114 Governor <br /> Protection Phone(916)464-3291 -FAX(916)464-4645 <br /> htip://,A,Nm.waterboards.ca.gov/centraIvaIley <br /> I <br /> [L41 <br /> 8 January 2007 <br /> !�,( i ,� li%i` �(_)' <br /> Mr. Kevin Basso - General Manager <br /> Forward Inc. 6W6' <br /> L <br /> �, <br /> 1145 West Charger Way PERM!�1S'1:'qVJ AUH <br /> Stockton, CA 95206 <br /> LANDFILL GAS DETECTION MONITORING PLAN, FRENCH CAMP LANDFILL, SAN <br /> JOAQUIN COUNTY <br /> Regional Water Quality Control Board Staff has reviewed the Landfill Gas Detection <br /> Monitoring Plan, French Camp Landfill (Monitoring Plan) submitted on 2 January 2007 by <br /> Geologic Associates. The Monitoring Plan proposes to monitor for landfill gas at the existing <br /> eight perimeter soil-pore gas probes. The first year of monitoring will consists of quarterly <br /> collection of soil-pore gas samples for laboratory analysis by EPA method TO-15. If the <br /> results are generally negative for volatile organic constituents, than in subsequent years each <br /> soil-pore gas probe will be field screened with a gas detection field instrument for oxygen, <br /> carbon dioxide, and methane. Whenever methane concentrations are equal to or greater <br /> than 2.5% a gas sample will be collected for laboratory analysis. The Monitoring Plan also <br /> recommends abandoning and relocating soil-pore gas probes SGP-1, -2A and —3. Staff does <br /> not believe that relocation of these probes is justified. Relocation of selected probes can be <br /> revisited after the first year of monitoring. <br /> Staff concurs with the Monitoring Plan and it will be incorporated in the revised Waste <br /> Discharge Requirements for the French Camp Landfill. Staff anticipates that revised WDRs <br /> will be completed in early 2007. <br /> If you have any questions please cal me at (916) 464-4614. <br /> ROSS ATKINSON <br /> Engineering Geologist <br /> Title 27 Unit <br /> cc: Mr. Robert McClellon, San Joaquin County LEA, Stockton <br /> Mr. Randy Fridlander, CIMWB, Sacramento. <br /> Mr. William Lopez, Geologic Associates, San Diego <br /> Mr. Ruben Rameriz, Forward Landfill Operations Manager, Stockton. <br /> Mr. Lochlin Caffey, Forward Inc. Stockton <br /> RDA;W:\sta ff\atk in sr\mydocuments\frenchcamp\LFGasM on itor.doc <br /> California Environmental Protection Agency <br /> 05 Recycled Paper <br />