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PpU1N <br /> COUNTY OF SAN JOAQUIN <br /> 2.•'' ;y EUGENE DELUCCHI <br /> In :< DEPARTMENT OF PUBLIC WORKS CHIEF DEPUTY DIRECTOR <br /> P.O.BOX 1810-1610 E.HAZELTON AVENUE THOMAS R.FLINN <br /> STOCKTON.CALIFORNIA 95201 DEPUTY DIRECTOR <br /> C' �P (209)4683000 MANUEL LOPEZ <br /> FAX(209)468-2999 DEPUTY DIRECTOR <br /> HENRY M. HIRATA <br /> DIRECTOR <br /> R <br /> Q <br /> February 9, 1995 <br /> FEB 14 ,005 <br /> LNVIR0rvrv1LN(; ;LALTH <br /> MEMORAhT D Uhl PERMIT/SERVICES. <br /> TO: Ed Padilla, SREHS <br /> Public Health Services <br /> Environmental Health Division <br /> FROM: Gabriel Karam, P.E. G.W. <br /> Senior Solid Waste Engineer <br /> SUBJECT: LANDFILL GAS MONITORING AT THE NORTH <br /> COUNTY AND FOOTHILL SANITARY LANDFILLS <br /> On January 31, 1995, Solid Waste Division staff monitored for <br /> landfill gas migration in accordance with previously submitted <br /> monitoring plans for the North County and Foothill Sanitary <br /> Landfills. The equipment used was a Gas Tech Landfill Monitor <br /> equipped with parts per million (ppm) , Lower Explosive Limit <br /> (5%) , and 100% gas scales. The 5% gas scale did not detect any <br /> gas, so the ppm scale was used for monitoring. The instrument <br /> was calibrated with a 2 .5% methane mixture and was warmed up for <br /> approximately ten minutes prior to monitoring. <br /> The results from the second monitoring event are shown on the <br /> attached maps for each site. The readings for all holes and <br /> structures are shown adjacent to their locations on the maps. <br /> If you have any questions, please call me at Extension 83066. <br /> GK:WJ:vj <br /> R: IVIRGINIAINC-FHGAS.EP <br /> Attachments <br /> LA 63229 <br /> LA 31209 <br />