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5TRPATU5 <br />ENVIRONMENTAL, INC. FILE COPY 3330 Cameron Park Drive, Suite 550 <br />Cameron Park, California 95682 <br />(530) 676-6004 — (530) 676-6005 <br />February 28, 2018 <br />Project No. 2154-1817-01 <br />Ms. Vera Fischer, P.G. <br />California Regional Water Quality Control Board <br />Central Valley Region <br />11020 Sun Center Drive, Suite 200 <br />Rancho Cordova, California 95670 <br />Re: Work Plan for Additional Site Investigation <br />Former Barnes Trucking Facility <br />1817 South Fresno Avenue <br />Stockton, California <br />Dear Ms. Fischer: <br />Stratus Environmental, Inc. (Stratus) has prepared this Work Plan for Additional Site <br />Investigation (Work Plan) on behalf of Mr. Floyd Barnes, for the Former Barnes <br />Trucking facility located at 1817 South Fresno Avenue, Stockton, California (the Site, <br />see Figures 1 through 4). Petroleum hydrocarbon impact to the subsurface has previously <br />been documented at the subject property, and the California Regional Water Quality <br />Control Board (RWQCB) currently oversees an environmental case for the Site. The Site <br />is currently enrolled in the Expedited Claim Account Program (ECAP) of the <br />Underground Storage Tank Cleanup Fund (USTCF). During a recent Joint Execution <br />Team (JET) meeting, the RWQCB and the USTCF requested that the extent of petroleum <br />hydrocarbon impact to the subsurface be further investigated east-southeast <br />(downgradient) of the Site, and on February 13, 2018, the RWQCB issued a letter <br />formally requesting a work plan to complete this task. To accommodate this request, <br />Stratus is proposing to advance one cone penetrometer test (CPT) boring offsite to profile <br />subsurface conditions to approximately 90 feet below ground surface (bgs). After <br />profiling one of the borings (the centrally located boring), depth discrete groundwater <br />samples would then be collected at three locations in order to further assess the extent of <br />impact to groundwater. Details associated with the proposed subsurface investigation <br />work are provided in the following subsections of this Work Plan. <br />SITE DESCRIPTION <br />The Site is located south of the intersection of State Highway 4 (West Charter Way) at <br />1817 South Fresno Avenue, Stockton, California, on the west side of the intersection of <br />South Fresno Avenue and La Vita Drive. The property is located in a mixed residential <br />and commercial neighborhood in southwest Stockton, approximately 1.3 miles south of <br />KABames Trucking\Work Plans\bames trucking cpt work plan 2018.doc