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�— RECEIVED L ' 5 <br /> P��fN�IR" ENTAL HEALTH EPA <br /> aour� `SANJOA.QUIN COUNTY Donna K. Reran, R E.H.S. <br /> Director 304 East Weber Avenue,Third Floor Unit Supervisors <br /> Carl Borgman,R E H.S. <br /> Al Olsen, R.t.H.S. _ Stockton California 95202-2708 Mike Huggins,R.E.H S.,1t.D.I. j <br /> cq ;a Program Manager.. Telephone: (209)46$-3420 Douglas w,Wilson, R.E.H.S. <br /> Laurie A. Cotulla, R.E.H.S. <br /> Margaret Lagorio,R.E.H.S. <br /> Program. Manager Fax: (209)464-01.38 Robert McClellon, R.E.KS. <br /> Website:www.sjgov.org/ehd/ Jeff Carruesco,R.E.RS, <br /> STEPHEN VALENTINE <br /> STEVE & GENES SERVICE <br /> 6232 HEMET AVE <br /> STOCKTON CA 95207 <br /> RE: STEVE& GENES.SERVICES SITE E CODE: 2080 <br /> 2315 N*EL DORADO ST <br /> STOCI{TON CA '95204 <br /> WORKPLAN: Additional Site ChUaractari?ation Work Plan DATED: 14fa ch 15, 200 <br /> PREPARED BY: Ge to ' al Tec <br /> APPROVED with Conditions(See Below) <br /> ADEQUATE AND NECESSARY ELENtENTS OF THE WORKPLAN(H&$. <br /> 25296.10(c)(3)): <br /> 1. Install 3 soil borings using cone penetration technology(CPT-1 to CPT-3) to 100 feet below <br /> surface grade(bsg) in order to define the down gradient-(northeast)extent of die <br /> groundwater contamination plume. <br /> 2• Collect groundwater samples and.up to 3'soil samples for laboratory analyses. <br /> COMMENTS AND CONDITIONS: <br /> 1. EHD agrees\Ath GrI's recommendation to limit the advance of the three proposed CPTs <br /> to 100 feet bsg. Although no groundwater samples.have been obtained from the deepest <br /> screened chambers (94 to 97 feet bsg) of the three off-site multi-chambered wells (C IT) <br /> M/-307,308,and 309,continuous analytical results of non-detect/very low contaminant <br /> concentrations in the on-site and the deepest screened�i cU NM-201 (146 to 150.5 feet bsg) <br /> indicated the vertical extent of the dissolved plume appears to be defined at this time. <br /> 2. Implement the proposed work by September 15,2005. <br /> ' REASONS FOR DISAPPROVAL OF THE WORKPLAN ( )( )): <br /> (H&S 25296.9.0 C 3 <br /> None <br /> f 1 <br /> DATED_ Jul 27, 2005 BY ce <br /> j <br /> Cc: CRWQCB;Central Valley Region - fames L. L. arson, G <br /> Cc: Geological Technics, Inc.-Raynold I: Kablanow <br /> • i <br /> I <br /> ' I <br /> i � <br />