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HENRY M. HIRATA <br />DIRECTOR <br />May 7, 1997 <br />0 9 <br />COUNTY F SAN JOAQUIN <br />DEPARTMENT OF PUBLIC WORKS <br />P. O. BOX 1810 - 1810 E. HAZELTON AVENUE <br />STOCKTON. CALIFORNIA 95201 <br />(209) 468-3000 <br />FAX(209)468-2999 <br />TO: Ed Padilla, Lead Senior REHS <br />Public Health Services <br />Environmental Health Division <br />FROM: Gabriel Karam <br />Senior Solid Waste Engineer <br />SUBJECT: LANDFILL GAS MONITORING AT THE <br />FOOTHILL SANITARY LANDFILL <br />THOMAS R. FLINN <br />DEPUTY DIRECTOR <br />MANUELLOPEZ <br />DEPUTY DIRECTOR <br />STEVEN WINKLER <br />DEPUTY DIRECTOR <br />On April 11, 1997, 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. The instrument was <br />calibrated using standard GasTech gas calibration canisters prior <br />to monitoring. <br />The results from the April 1997 monitoring event are shown on the <br />attached map. The readings for all holes and structures are <br />shown adjacent to their locations on the map. The mobile trailer <br />was not tested this quarter because the tenant was on vacation, <br />and the trailer could not be entered. If you have any questions, <br />please call me at Extension 83066. <br />GK:WJ: vj <br />R: I VIRG/NIA IMEMOSI2NDW97G. FH <br />Attachment <br />c: Scott Walker, California Integrated <br />Waste Management Board <br />LA 63229 <br />LA 31209 <br />