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ENVIR MENTAL HEALT DEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> Unit Supervisors <br /> Donna K.Heran,R.E.H.S. .304 East Weber Avenue, Third Floor Carl Borgman,R.LH.S. <br /> Director Mike Huggins,R.E.H.S.,R.D.I. <br /> ` Al Olsen,R.E.H.S. Stockton,California 95202-2708 <br /> Douglas W.Wilson,R.E.H.S. <br /> • c ., - ..�P Program Manager 'fele hone: 209 468-3420 Margaret Lagorio,R.E.H.S. <br /> Laurie A.Cotulla,R.E.H.S. Fax: (209) 454-0138 Robert McClellon,R.E.H.S. <br /> Program Manager Mark Barcellos,R.E.H.S, <br /> APR 2 6 2004 <br /> PAUL SOWA <br /> VALLEY WHOLESALE DRUG CO. , INC. <br /> 1401 FREMONT ST W <br /> STOCKTON CA 95203 <br /> WORKPLAN: Workplan Additional Site Characterization DATED: March 29, 2004 <br /> PREPARED BY: Geological Technics, Inc. (_._GTI) <br /> i <br /> APPROVED Cx <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPLAN (H&S <br /> 25299.37,sub d.(c)(3).): <br /> 1. Installation of 8 GeoProbe borings to approximately 10 feet bsg at off site <br /> locations to assess the extent of the groundwater contamination plume. <br /> 2. Collect grab groundwater samples using a hydropunch type tool. Samples will be <br /> submitted for laboratory analyses of BTEX,TPH-gas, and 5 oxygenates and 2 <br /> lead scavengers using Method'8260. <br /> 3. Collect one soil sample and submit for laboratory analyses ofBEX, TPH-gas, <br /> and 5 oxygenates and 2 lead scavengers using Method 8020. A positive result <br /> will be confirmed with a retest using Method 8260. <br /> COMMENTS AND CONDITIONS: <br /> 1. Obtain well permit and submit appropriate fee before scheduling.work with <br /> EHD. <br /> 2. Implement the proposed work by June 10, 2004. <br />{ REASONS FOR DISAPPROVAL OF THE WORKPLAN (H&S 25299.37, <br />{ subd.(C)(3).): <br /> None <br /> x <br /> DATED Al2ril26 2004 BY �f <br /> Cc: CRWQCB, Central Valley Region—James L.L. Barton, RG <br /> Cc: Geological Technics, Inc:---Eric Price <br /> I <br /> i <br />