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' � w <br /> OPgU1N C <br /> Q` P.O.BOX 1810-1810 E.HAZELTON AVENUE <br /> THOMAS R. FLINN _ STOCKTON,CALIFORNIA 95201-3018 <br /> DIRECTOR i�" o (209)468-3000 FAX(209)468-2999 <br /> c't;Foaa P www.co.san-joaquinxa.us <br /> THOMAS M.GAU <br /> DEPUTY DIRECTOR yy�,.�.�..�� <br /> MANUEL SOLORIO Workkg for YOU <br /> DEPUTY DIRECTOR <br /> STEVEN WINKLER <br /> DEPUTY DIRECTOR <br /> BENTON ANGOVE <br /> BUSINESS ADMINISTRATOR September 23, 2004 <br /> Mr. Robert McClellon, Lead Senior R.E.H.S. 2 4 <br /> 2004 <br /> Environmental Health Department <br /> 304 East Weber Avenue,Third Floor .; <br /> Stockton, California 95202 <br /> SUBJECT: THIRD QUARTER 2004 LANDFILL GAS MONITORING AT THE <br /> HARNEY LANE SANITARY LANDFILL <br /> Dear Mr. McClellon: I Ott I <br /> Enclosed, please find the results of the third quarter perimeter migration monitoring at the Harney Lane <br /> Sanitary Landfill, conducted August 18-20, 2004, including monitoring the foundation vents of all <br /> migrant labor camp structures adjacent to the landfill. We are pleased that no combustible gas has been <br /> detected in any monitoring event at these foundation vents,indicating that LFG is not migrating to those <br /> structures. Per your request,we have asked SCS Field Services to monitor those foundation vents <br /> weekly. We will include these data in our next quarterly report. <br /> We completed the repairs to the LFG system on September 16,2004, and have increased LFG collection <br /> rate from approximately 260 cfm to 350 cfm,with the additional flow being drawn from the portion of the <br /> landfill where migration is indicated. We expect that this flow rate will be reduced later as the LFG is <br /> "drawn down",but with this increased collection rate,we believe that we will soon bring the <br /> concentration of combustible gas at all probes to below 5 percent. We have also accelerated the LFG well <br /> field adjustments to bring the probes into compliance quickly. <br /> If you have any questions,please contact me at extension 8-3066. <br /> Sincerely, <br /> MICHAEL CARROLL, PE <br /> Senior Civil Engineer <br /> MC:mr <br /> WlHamey Lane\LFG MonitData\2004\3rdQtr2004RptCoverLetter.doc <br /> Enclosure <br /> c: Mr. Gino Yekta <br /> California Integrated Waste Management Board <br /> Cal-EPA Building, 10011 Street <br /> Sacramento, California 95812-4025 <br /> LA 11458 <br />