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PQ��N <br />O. C <br />a: THOMAS R. FLINN <br />DIRECTOR <br />C9�%FpRtN\P <br />THOMAS M. GAU <br />CHIEF DEPUTY DIRECTOR <br />MANUEL SOLORIO <br />DEPUTY DIRECTOR <br />STEVEN WINKLER <br />DEPUTY DIRECTOR <br />ROGER JANES <br />BUSINESS ADMINISTRATOR <br />Wcwk:ing for YOU <br />March 11, 2009 <br />Mr. Robert McClellon, Program Coordinator <br />Environmental Health Department <br />600 East Main Street <br />Stockton, California 95202 <br />P. O. BOX 1810 . 1810 E. HAZELTON AVENUE <br />STOCKTON, CALIFORNIA 95201 <br />(209) 468-3000 FAX (209) 468-2999 <br />www.sjgov.org/pubworks <br />6IL-71F1L! <br />IDEMA-i/SER 1iiCF <br />SUBJECT: FIRST QUARTER 2009 PERIMETER AND STRUCTURE LFG <br />MONITORING, FOOTHILL SANITARY LANDFILL <br />Dear Mr. McClellon: <br />We are pleased to report that as of February 25, 2009, we are in full compliance with Title <br />27 regarding landfill gas migration at the Foothill Sanitary Landfill. Attached please find <br />the results of the perimeter migration and on-site structure monitoring event conducted <br />on January 22, 2009. As you know, the methane content at SG -4 was found to be above <br />the 5.0 percent regulatory limit. The vacuum on extraction wells GX-8 and GX-9 was <br />increased to correct this problem. On February 25, 2009, county staff returned to the site <br />to re -check this probe which was found to be in compliance. <br />If you have any questions, please contact me at extension 8-8504. <br />Sincerely, <br />W. MICHAEL CARROLL, PE <br />Senior Civil Engineer <br />WMC:Ij <br />N:\1FoothiI1\LFGperimMonit\2009\1st Qtr\RMcCIeIIonLFG-1stQ09.doc <br />Attachments <br />c: Keith Kennedy, California Integrated Waste Management Board <br />1001 "1" Street, Sacramento, California 95812-4025 <br />LA 31209 <br />