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17 <br /> a THOMAS R. FLINN : P.O.BOX 1810-1810 E.HAZELTON AVENUE <br /> " 5 ` C>Lr6 'y STOCKTON,CALIFORNIA 95201 <br /> DIRECTOR ,� (209)468-3000 FAX(209)468-2999 <br /> c"��FOR`'��• "° www.co.san-joaquin.ca.us <br /> THOMAS M.GAU <br /> DEPUTY DIRECTOR ° ,,, <br /> MANUEL SOLORIO w��yy,.,.�'"�6 YOU nrrr�---���u---���1 ENO <br /> DEPUTY DIRECTOR u 1� 1V/ <br /> STEVEN WINKLER F-11EC ll LLL��� <br /> DEPUTY DIRECTOR <br /> APR 0 8 2003 <br /> BENTON ANGOVE <br /> BUSINESS ADMINISTRATOR ENVIRONMENT HEALTH <br /> April 7, 2003 PERMIT/SERVICES <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: FOOTHILL SANITARY LANDFILL GROUNDWATER AND SURFACE <br /> WATER MONITORING <br /> Dear Ms. Schwab: <br /> Enclosed is a copy of the Fourth Quarter and Annual 2002 Monitoring Report for the Foothill <br /> Sanitary Landfill. This report is submitted to comply with Waste Discharge Requirements Order <br /> No. 94-258 (WDRs). New WDRs (Order No. R5-2003-0020)were adopted on January 31, 2003. <br /> All future monitoring and reporting will be in accordance with the newly adopted WDRs. <br /> Two VOCs were detected, and Chloride concentrations exceeded the established concentration <br /> limit at MW-3. No resampling was requested because the County has already verified impact to <br /> the groundwater in the vicinity of MW-3. An Evaluation Monitoring Plan (EMP)was submitted <br /> to the Board in October 2002, which outlined the County's approach to delineating the nature <br /> and extent of the suspected release. <br /> The field investigation of the EMP is scheduled for May 2003. The County will notify Board <br /> staff at least two weeks prior to the start of field activities. <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 /> MC:sc <br /> N:\1 Foothill\Groundwater Monitoring\Repts2002\4thQtro2letter.wpd <br /> Enclosure <br /> c: Robert McClellon, Environmental Health Department <br /> LA 31610 <br />