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ENVIRONMENTAL HEALTH DEPARTMENT <br /> SANJOAQUIN "COUNTY <br /> Unit Supervisors <br /> Donna K. Heran, R.E.H.S. <br /> 304 East Weber Avenue, Third Floor Carl Borgman, R.E.H.S. <br /> Director Mike Huggins, R.E.H.S , R.D.I. <br /> ��- Al Olsen, R.E.H.s. Stockton, California 95202-2708 <br /> Douglas W. Wilson, R.E.H.S . <br /> Program Manager Telephone: (209) 468-3420 MargaretLagorio, R.E.H.S. <br /> Laurie A. Cotulla, R.E.H:S. Robert McClellon, R.E.H.S. <br /> Program Manager Fax: (209) 464-0138 Mark Barcellos, R.E.H.S . <br /> REMO CANEPA <br /> CANEPA' S CAR WASH <br /> 1536 N HUNTER <br /> STOCKTON CA 95204 <br /> RE: CANEPA'S CAR WASH Site Code: 1225 <br /> 6230 PACIFIC AVENUE <br /> STOCKTON CA 95204 <br /> WORKPLAN: Remedial Action Plan DATED: Match 3. 2003 <br /> PREPARED BY: Condor Earth Technologies Inc (CETT <br /> APPROVED 1K with condition (See Below) <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPLAN (H&S <br /> 25299 .37,subd.(c) (3) .) : <br /> 1 . Installation of a pump and treat system using existing monitoring well MW-1 and <br /> MW-11 in conjunction with the existing soil vapor extraction system. <br /> 2. Piping to MW-2 as an additional extraction point. <br /> 3. Installation of an air stripping unit and a thermal oxidizer as treatment, and monitor the <br /> influent and effluent samples (air sampling quarterly and PID weekly) . <br /> 4. Obtain air discharge permit and sanitary sewer discharge permit. <br /> 5. Post remediation monitoring for four quarters. <br /> COMMENTS AND CONDITIONS: <br /> 1 . Commence work by December 1 , 2003, <br /> REASONS FOR DISAPPROVAL OF THE WORKPLAN (H&S 25299.37, subd. (C) (3) .) : <br /> 1 . The work plan proposed 73.9 micrograms per liter (ug/1) of benzene and 13 ug/l of <br /> methyl-tert butyl ether as dean-up goals. This is not acceptable. The Sacramento and <br /> San Joaquin River Basins Plan water quality objective is for protection of all groundwater <br /> designated for beneficial use, and all water in San Joaquin County is considered to be <br /> beneficial. At minimum, the California Department of Health Services (DHS) primary <br /> maximum contaminant levels (NGLs) for benzene at 1 ug/ and secondary MCL fox <br /> 4MTBE at 5 ug/l must be the goals. l (N <br /> DATED oC ober 1� Zp03 BY <br /> Cc: CRWQCB, Central Valley Region — James L. L. arton <br /> Cc: CET — Jeff Willett <br /> i <br />