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r.7.7Nftire° <br />Water Boards <br />EDMUND G. BROWN JR <br />GOVERNOR <br />sIVIAEctRTE,Hcw R <br />ARV ,G <br />ORDRIOUEZ <br />ENVIRONMENTAL PROTECTION <br />Central Valley Regional Water Quality Control Board <br />26 July 2018 <br />JUL 2 s 2018 <br />Mr. Floyd Barnes <br />9744 Fountain Valley Drive <br />Stockton, CA 95209 <br />FORMER BARNES TRUCKING FACILITY, 1817 SOUTH FRESNO AVENUE, STOCKTON, <br />SAN JOAQUIN COUNTY <br />Central Valley Regional Water Quality Control Board (Central Valley Water Board) staff <br />reviewed the Addendum to February 28, 2018 Work Plan for Additional Site Investigation <br />(Addendum) dated 31 May 2018, submitted on your behalf by Stratus Environmental, Inc. <br />(Stratus). The former Barnes Trucking facility is located at 1817 South Fresno Avenue in <br />Stockton (Site). <br />In the Addendum, Stratus proposed modified locations of three CPTs boring in Bella Vista Drive, <br />Stockton. Stratus stated that per the insistence of UST Cleanup Fund staff, CPT profiling will <br />only be completed at one of the three proposed work locations (CPT-2) in order to reduce <br />project costs. <br />Central Valley Water Board staff concurs with the amendments to the scope of work presented <br />in the Addendum. Staff concur with Stratus's proposal to collect two (2) depth discrete grab <br />groundwater samples from each boring at approximately 60 and 90 feet below ground surface <br />(ft bgs), as proposed in the 28 February 2018 Work Plan. <br />Central Valley Water Board staff continue to be concerned about collecting CPT soil profiling <br />data from only one of the three borings and request that Stratus provide a discussion regarding <br />the hydrogeological transport of petroleum hydrocarbons in profiled and non-profiled borings if <br />detected. <br />Please submit a results report by 1 December 2018 <br />KARL E LONGLEY ScD, RE., CHAIR I PATRICK PULUPA, ESQ., EXECUTIVE OFFICER <br />11020 Sun Center Drive #200, Rancho Cordova, CA 95670 I www.waterboards.ca .govicentrelvalley <br />RECYCLED PARER