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P®U1N <br />COUNTY <br />'�j SAN <br />n � /� (�'� n,, <br />2;' y COU N I I OF SA V JO 1v4 U I 1 V EUGENE DELUCCHI <br />m� :< DEPARTMENT OF PUBLIC WORKS M-roEPI) ,Y DIRE< 1r>R <br />P. O. 80X 1810 -- 1810 E. HAZELTON AVENUE THOMAS R. FLINN <br />•'. 111 ri ITv n'aJ-1 1rIR <br />STOCKTON. CALIFORNIA 95201 <br />C ��P (209) 468-3000 MANUEL LOPEZ <br />FAX (209) 468-2999 <br />HENRY M. HIRATA <br />rARFCU01 <br />July 26, 1994 <br />A)L 28 1994 <br />M E M O R A N D U M PERMIT I SERVIC -3 <br />TO: Ed Padilla, SREHS <br />Public Health Services <br />Environmental Health Division <br />FROM: Gabriel Karam, P.E. c'K- <br />Senior Solid Waste Engineer <br />SUBJECT: LANDFILL GAS MONITORING AT THE NORTH COUNTY, <br />FOOTHILL, AND CORRAL HOLLOW SANITARY LANDFILLS <br />On July 21, 1994, Solid Waste Division staff monitored for landfill <br />gas migration in accordance with previously submitted monitoring <br />plans for the North County, Foothill, and Corral Hollow Sanitary <br />Landfills. The equipment used was a Gas Tech Landfill Monitor <br />equipped with parts per million (ppm), Lower Explosive Limit (5%), <br />and 100% gas scales. The 5% gas scale did not detect any gas, so <br />the ppm scale was used for monitoring. The instrument was <br />calibrated with a 2.5% methane mixture and was warmed up for <br />approximately 10 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 are shown <br />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:�VIRGINIAJMEM0SJGASM0N.EP1 <br />Attachments <br />LA 63229 <br />LA 21303 <br />LA 31209 <br />