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PpUl/y <br /> COUNTY OF SAN JOAQUIN THOMAS M.GAU <br /> DEPARTMENT OF PUBLIC WORKS DEPUTY DIRECTOR <br /> P.O.BOX 1810-1810 E.HAZELTON AVENUE <br /> �iFoad STOCKTON,CALIFORNIA 95201 MANUEL SOLORIO <br /> (209)468-3000 INTERIM DEPUTY DIRECTOR <br /> THOMAS R. FLINN FAX(209)468-2999 <br /> INTERIM DIRECTOR <br /> STEVEN WINKLER <br /> DEPUTY DIRECTOR <br /> November 19, 2001 <br /> MEMORANDUM <br /> TO: Robert McClellon,Lead Senior R.E.H.S. <br /> Public Health Services <br /> Environmental Health Division <br /> FROM: W. Michael Carroll, PE <br /> Senior Civil Engineer igy <br /> SUBJECT: LANDFILL GAS MONITORING AT FOOTHILL SANITARY LANDFILL <br /> On November 16, 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 open <br /> 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 Fourth Quarter <br /> 2001 Monitoring Event are shown on the attached map with readings for all probes and structures <br /> shown adjacent to their locations. <br /> If you have any questions, please contact me at extension 8-3066. <br /> MC:DJ:dp <br /> N:\Dan\Fh\Gas\4th2001.wpd <br /> Attachment <br /> c: Gino Yekta <br /> California Integrated Waste Management Board <br /> 1001 "1" Street <br /> Sacramento, CA 95812 <br /> LA 31209 <br />