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PqU 1 H/ 0 <br /> r �?, Ur <br /> WP.O.BOX 1810-1810 E.HAZELTON AVENUE <br /> a 5 < THOMAS R. FLINN STOCKTON,CALIFORNIA 95201-3018 <br /> ' DIRECTOR &77% <br /> (209)468-3000 FAX(209)468-2999 <br /> www.co.san-joaquin.ca.us <br /> THOMAS M.GAU L/1DEPUTY DIRECTOR <br /> Woddng for YOU <br /> MANUEL SOLORIO <br /> DEPUTY DIRECTOR <br /> ' STEVEN WINKLER <br /> DEPUTY DIRECTOR <br /> BENTON ANGOVE <br /> BUSINESS ADMINISTRATOR October 1,2003 <br /> ' Ms. Kim Schwab <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> 3443 Routier Road <br /> Sacramento, California 95827 <br /> ' SUBJECT: RESULTS OF EVALUATION MONITORING PROGRAM; <br /> FOOTHILL SANITARY LANDFILL <br /> ' Dear Ms. Schwab: <br /> We are most pleased to report that our evaluation monitoring investigation at Foothill Landfill shows <br /> that the groundwater is not now impacted by the landfill(report attached). We know that you are as <br /> pleased as we are with these findings,which are consistent with monitoring data from monitoring <br /> well MW-3 since January 2002. Further evaluation monitoring is not proposed at this site at this <br /> time, subject to your review of these results. <br /> We believe that past detections were the result of a transitory increase in LFG production due to <br /> ponding at the edge of the landfill adjacent to MW-3. If so,then the grading to correct this ponding <br /> several years ago was the"corrective action"needed. <br /> ' As we discussed,if groundwater is not impacted,then corrective action is not needed, and an <br /> Engineering Feasibility Report identifying potential corrective action against no impact would be of <br /> no benefit. Therefore, the attached"Engineering Feasibility Report"represents the results of our <br /> ' evaluation monitoring, confirming lack of impact to the groundwater by the Foothill Landfill. <br /> If you have any questions,please call me at(209)468-3066. <br /> ' Sincerely, <br /> W. MICHAEL CARROLL,PE <br /> ' Senior Civil Engineer <br /> WMC:NZ:sc <br /> NAlFoothill\Groundwater Monitoring\EvalMonitPlan\KSchwab03-EMPResults.doc <br /> Enclosure <br /> ' c: Robert McClellon,Environmental Health Department <br /> LA 31610 <br />