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POUI/y <br /> Q ?, COUNTY OF SAN JOAQUIN THOMAS R.FLINN <br /> DEPARTMENT OF PUBLIC WORKS DEPUTY DIRECTOR <br /> P.O. BOX 1810-1810 E.HAZELTON AVENUE <br /> C4� FORa`P STOCKTON,CALIFORNIA 95201 THOMAS M.GAU <br /> (209)468-3000 } <br /> MANUEL LOPEZ FAX(209)468-2999 w DEPUTY DIRECTOR <br /> DIRECTOR <br /> STEVEN WINKLER <br /> DEPUTY DIRECTOR <br /> January 31, 2001 <br /> MEMORANDUM <br /> TO: Robert McClellon, Lead Senior R.E.H.S. <br /> Public Health Services <br /> Environmental Health Division <br /> FROM: Michael Kalish <br /> Associate Engineer <br /> SUBJECT: LANDFILL GAS MONITORING AT FOOTHILL SANITARY LANDFILL <br /> On January 31, 2001, Solid Waste Division staff monitored for landfill gas migration at the <br /> Foothill Sanitary Landfill. In accordance with a previous request from the Environmental Health <br /> Division, PVC pipes with caps were monitored for methane at four locations. The pipes are <br /> open at the bottom and are approximately 2.5.feet deep. <br /> The County used a Landtec GEM 500 Gas Extraction Monitor to perform the monitoring. The <br /> instrument was calibrated by County staff prior to monitoring. Results from the First Quarter <br /> 2001 Monitoring Event are shown on the attached map with readings for all probes and <br /> structures shown adjacent to their locations. <br /> If you any questions,please contact me at(209)468-3066. <br /> MK:NZ:vn <br /> N:\Najee\Fh\Gas\1 st2001.wpd <br /> Attachment <br /> c: Gino Yekta, California Integrated Waste Management Board <br /> LA 31209 <br />