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GROUND ZERO ANALYSIS, INC. <br /> 2291 W. March Lane, Suite 127D <br /> Stockton, California 95207 <br /> Telephone: (209) 952-3481 <br /> Facsimile: (209) 952-9892 <br /> April 24, 1996 <br /> Mr. LaDon Strapp <br /> 934 Chisholm Trail <br /> Galt, CA 95632 <br /> Subject: Limited Site Assessment, Don's Dandy Mart, 20 W. Turner Road, Lodi, CA <br /> Dear Mr. Strapp: <br /> This letter report is submitted to summarize field procedures and analytical data associated with <br /> a limited site assessment conducted by Ground Zero Analysis, Inc. (Ground Zero) at 20 W. <br /> Turner Road in Lodi, California. The site is operated as Don's Dandy Mart, a Mini-market/gas <br /> station. It is our understanding that three 10,000 gallon underground fuel storage tanks are <br /> located at the site. One tank stores diesel #2 and two tanks store unleaded gasoline. <br /> The limited site assessment consisted of using the direct push method to collect soil samples near <br /> the fill end of each tank and near the pump island. The pushed soil borings were advanced by <br /> Spectrum Exploration (C57-512268) of Stockton, California, on April 12, 1996. The locations <br /> of the pushed soil borings are shown on the attached site sketch. Two soil samples were <br /> collected from each boring for laboratory analysis. Analyzed samples include the samples <br /> collected from near the fill end of the tanks at approximately 15 and 25 feet below ground <br /> surface (bgs) and the samples collected at approximately 8 and 15 feet bgs in the boring near <br /> the pump island. All equipment used for advancing soil borings and collecting soil samples was <br /> precleaned by steamcleaning prior to use. <br /> Soil samples were analyzed for total petroleum hydrocarbons as gasoline (TPHG) and benzene, <br /> toluene, ethylbenzene, and xylenes (BTEX) by Argon Mobile Labs (DHS #1873) of Ceres, <br /> California. In addition the soil samples collected near the fill end of the diesel tank and near <br /> the dispenser island were analyzed for total petroleum hydrocarbons as diesel (TPHD). Four <br /> samples, the shallowest from each boring, were analyzed for total lead. <br /> After sample collection, each boring was grouted to the surface with neat cement. No drill <br /> cuttings were generated due to the direct push method of advancing the borings. Field notes are <br /> included in Attachment A. <br />