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a <br />HENRY M. HIRATA <br />DIRECTOR <br />October 10, 1996 <br />COUNTY OF SAN JOAQU <br />V I t V <br />THOMAS R. FLINN <br />DEPARTMENT OF PUBLIC WORKS <br />DEPUTY DIRECTOR <br />P. O. BOX 1810 - 1810 E. HAZELTON AVENUE <br />MANUEL LOPEZ <br />STOCKTON. CALIFORNIA 95201 <br />DEPUTY DIRECTOR <br />(209)468-3000 <br />STEVEN WINKLER <br />FAX(209)468-2999 <br />DEPUTY DIRECTOR <br />M E M O R A N D U M <br />TO: Ed Padilla, SREHS <br />Public Health Services <br />Environmental Health Division <br />FROM: Gabriel Karam G.W. <br />Senior Solid Waste Engineer <br />SUBJECT: LANDFILL GAS MONITORING AT THE <br />FOOTHILL SANITARY LANDFILL <br />On September 30, 1996, Solid Waste Division staff monitored for <br />landfill gas migration in accordance with previously submitted <br />monitoring plans for the Foothill Sanitary Landfill. <br />The County used a GasTech Landfill Monitor because our Landtec <br />GEM 500 was out for repairs. The instrument was calibrated using <br />standard GasTech gas calibration canisters prior to monitoring. <br />The results from the September 1996 monitoring event are shown on <br />the attached map. The readings for all holes and structures are <br />shown adjacent to their locations on the maps. If you have any <br />questions, please call me at Extension 83066. <br />GK: WJ:vj <br />R: \VIRGINIA\MEMOS\GASMON. EP9 <br />Attachment <br />c: Scott Walker, California Integrated <br />Waste Management Board <br />LA 63229 <br />LA 31209 <br />