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GEO-PHASE <br /> ENVIRONMENTAL <br /> February 6, 1998PAYMENT <br /> RECEIvEO <br /> Proposal No.: 162.2 <br /> Project Name: Valley Peterbilt(Taylor Court) FEB " 9 1998 <br /> Mr. John Phillips ENVIR NMENTq�IN <br /> N,STMCoU <br /> Interstate Truck Center <br /> PO Box 6463 <br /> Stockton, CA 95206 <br /> Re: Work Plan: Soil Boring Installation and Sampling <br /> Location: 641 S. Harrison Street, CA <br /> Dear Mr. Phillips: <br /> Geo-Phase Environmental Inc. conducted a Phase I Environmental Site Assessment <br /> (ESA) on the subject Property. The Phase I ESA documented the presence of a <br /> three chambered oil water separator, on the Property. The separator serves a <br /> steam cleaning area located near the south wall of the shop building. Pursuant to <br /> the recommendations of the Phase I report, Geo-Phase Environmental Inc. is <br /> pleased to submit the Work Plan which describes methods and protocols to be used <br /> to install soil borings to investigate environmental conditions of the soil in the <br /> vicinity of the oil water separator and steam cleaning rinseate drain. <br /> SITE BACKGROUND <br /> The subject site has historically been used by EY Mitchler Co., the Property owner, <br /> as a truck storage and service yard. The Property is being considered for purchase <br /> by Interstate Truck Center. <br /> The Property is mostly paved with concrete and has one building located on it (see <br /> site map for additional information). The building, a steel shop structure was <br /> constructed in 1984. Adjacent to the south wall of the shop building is a steam <br /> cleaning area. The steam cleaning rinseate is drained by a single drain in the <br /> concrete catchment area. The drain conducts rinseate along a short pipe run to a <br /> three chambered oil water separator. The separator chambers are concrete vaults <br /> that appear to be approximately cubic in shape, and has dimensions of about 4 feet <br /> per each dimension. The vaults are buried about two feet and access is via 24 inch <br /> concrete culvert pipe with steel man-hole covers providing entrance. <br /> 2937 Veneman Ave.,#B240 Geo-Phase Environmental Inc. (209)569-0293 <br /> Modesto,CA 95356 Fax(209)569-0295 <br />