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IR <br /> oPqu1N C <br /> 2� THOMAS R. FLINN P.O.BOX 1810-1810 E.HAZELTON AVENUE <br /> STOCKTON,CALIFORNIA 95201-3018 <br /> DIRECTOR U� C "� - (209)468-3000 FAX(209)468-2999 <br /> °4� FORaP www.co.san-joaquin.ca.us <br /> THOMAS M.GAU t/► v <br /> DEPUTY DIRECTOR y-.,-,-„ ,,-- <br /> MANUEL SOLORIO Working for YOU r7,— <br /> DEPUTY <br /> 7DEPUTY DIRECTOR <br /> STEVEN WINKLER <br /> DEPUTY DIRECTOR JUN 2 2 2004 <br /> BENTON ANGOVE June 21, 2004 <br /> BUSINESS ADMINISTRATORM, �tVl�.il'LN <br /> Mr. Robert McClellon, REHS <br /> PEFivjiiiil�i��+��� <br /> Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> SUBJECT: RESULTS OF MONITORING NEW SOIL GAS WELL SG-12, <br /> AND REVISION OF MIGRATION MONITORING PLAN, <br /> ,�✓ FOOTHILL SANITARY LANDFILL <br /> bd�” Dear Mr. McClellon: <br /> We are pleased to report that the new soil gas well, SG-12, was installed at the Foothill Sanitary <br /> Landfill on June 4, 2004. The well extends to 60 feet below the ground surface in anticipation of a <br /> landfill module being installed near this well and to that depth in the future. SG-12 is a triple- <br /> completion well, appropriate for monitoring adjacent to the property boundary. The well log will <br /> be included in the next monitoring report. <br /> With this well installed, we wish to propose a revision to our LFG migration monitoring <br /> perimeter. The new perimeter would be comprised of soil gas wells SG-2 through SG-10, and <br /> SG-12 (Figure Attached). <br /> We are also pleased to report that combustible gas was not detected in any of the three probes of <br /> this new well (data attached). This data, together with the lack of detection of combustible gas at <br /> the other wells of the monitoring perimeter(data transmitted May 12, 2003), confirms that we are <br /> in compliance with Title 27 regarding combustible gas migration at this site. <br /> If you have any questions, please call me at extension 8-3066. <br /> Sincerely, <br /> W. MICHAEL CARROLL, PE <br /> Senior Civil Engineer <br /> WMC:sc <br /> N:\1 Foothill\LFGperimMonit\2004\RMcC1ellon03-SG-12.doc <br /> Attachment <br /> c: Gino Yekta, California Integrated Waste Management Board <br /> 1001 "I" Street, Sacramento, California 95812-4025 <br /> LA 31209 <br />