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LVA <br /> < September 29, 1998 P <br /> WALLACE- KUHL Mr. Michael Infurna C(DIY <br /> &ASSOCIATES INC. San Joaquin County Public Health Services Division <br /> Site Mitigation Unit IV/LOP �A��1��E��' <br /> 304 E. Weber St., 3rd Floor -r <br /> Stockton, California 95202 <br /> SEP 2 9 7998 <br /> Workplan for Soil Boring Investigation SANjPusjj_o,,:)Uily <br /> WOOLSEY OIL,INC. lyVIRO,, Ty <br /> TAL NFA Ty.c v!S'Un' <br /> 1501 West Charter Way <br /> Stockton,California <br /> WKA No. 3964.01 <br /> As required by San Joaquin County Public Health Services Division(SJCPHSD)we <br /> have prepared this workplan for performing a subsurface soil investigation at the <br /> r4 above site. The purpose of our proposed work will be to evaluate the subsurface <br /> 1L soils in the vicinity of the existing underground storage tanks,product lines and fuel <br /> dispensers for the presence of petroleum hydrocarbons. This work is being <br /> completed at the request of our client Woolsey Oil,Inc. for the purpose of <br /> determining the future or their existing USTs. To date,no evidence of contamination <br /> is present at the site. <br /> Our scope of work will include the following: <br /> outlining the proposed soil boring locations with white paint and contact <br /> Underground Service Alert(USA)a minimum of 48 hours prior to <br /> f drilling <br /> • coring the concrete or asphalt surface at each of the boring locations to <br /> facilitate drilling <br /> • constructing approximately five soil borings to an estimated depth of 15 <br /> to 20 feet below site grade(bsg) at the approximate locations shown on <br /> Plate Nos. 1. All drilling equipment will be steam cleaned between <br /> borings to reduce the potential for cross-contamination; rinse water <br /> generated during steam cleaning will be pumped into labeled 55-gallon <br /> '. drums and stored on site <br /> • obtaining a minimum of two soil samples from each boring using a <br /> California-modified sampler equipped with clean two. The samples <br /> will be screened in the field with a photoionization detector (PID) to <br /> evaluate potential hydrocarbon content. The sample tubes will be <br /> sealed with Teflon®sheets and plastic end caps to reduce volatile <br /> hydrocarbon loss <br /> r �JU <br /> l� �j01 <br />