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I ` <br /> PgU,IN0 140 <br /> Q THOMAS R. FIINN P.O.BOX 1810-1810 E.HAZELTON AVENUE <br /> STOCKTON,CALIFORNIA 95201-3018 <br /> DIRECTOR (209)468-3000 FAX(209)468-2999 <br /> •°°c coai+P• ' www.co.san-joaquin.ca.us <br /> THOMAS M.GAU V <br /> DEPUTY DIRECTOR <br /> MANUEL SOLORIO Working for YOU <br /> DEPUTY DIRECTOR <br /> STEVEN WINKLER <br /> DEPUTY DIRECTOR <br /> 15, <br /> BENTON ANGOVE <br /> December 21, 2004 � <br /> BUSINESS ADMINISTRATOR O[C 2 2 2004 <br /> Mr. Robert McClellon, Lead Senior R.E.H.S. �jICC l�l,j�t <br /> Environmental Health Department PEr <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> SUBJECT: FOURTH QUARTER 2004 LANDFILL GAS MONITORING AT THE <br /> HARNEY LANE SANITARY LANDFILL <br /> Dear Mr. McClellon: <br /> 1� <br /> Enclosed,please find the results of the fourth quarter perimeter migration monitoring at the Harney Lane <br /> Sanitary Landfill, including monitoring the foundation vents of the migrant labor camp structures adjacent <br /> to the landfill. We are pleased that combustible gas has not been detected in any foundation vents, <br /> indicating that LFG is not migrating to those structures. All migration monitoring probes,with exception <br /> of GW-3D, are below regulatory limits for combustible gas. SCS Field Services will continue to monitor <br /> those vents weekly, along with the three soil gas monitoring wells adjacent to the migrant labor housing <br /> facility. <br /> We continue to aggressively collect LFG,having increased the collection rate from approximately <br /> 260 cfin to 350 cfin,with the additional flow being drawn from the portion of the landfill where migration <br /> is indicated. We hope to soon bring the concentration of combustible gas at probe GW-3D to below <br /> 5 percent,however,we are preparing to install an additional LFG extraction well near GW-3. <br /> If you have any questions, please contact me at extension 8-3066. <br /> Sincerely, <br /> W. MICHAEL CARROLL,PE <br /> Senior Civil Engineer <br /> WMC:sc <br /> N:\1Harney Lane\LFG Reports\2004\4thQtr2004RptCoverLetter.doe <br /> Enclosure <br /> c: Mr. Gino Yekta. <br /> California Integrated Waste Management Board <br /> Cal-EPA Building, 10011 Street <br /> Sacramento, California 95812-4025 <br /> LA 11458 <br />