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April 4 , 1991 <br /> Mr. Wes Dubose <br /> _ 2735 Teepee Drive, STE. E <br /> Stockton, CA 95205 <br /> — RE: Laboratory analysis of soil samples collected after the <br /> tank removal, 03-25-91 at Kingdon Airport/Dragstrip <br /> 12145 De Vries Road, Lodi, California. <br /> Dear Mr. Dubose: <br /> Enclosed please find the analytical results of the soil <br /> samples collected after the removal of one 10, 000 gallon <br /> — aviation fuel underground storage tank from the Kingdon <br /> Airport/Dragstrip on March 25, 1991 . <br /> Under the direct supervision of San Joaquin County <br /> Environmental Health, two soil samples were collected by <br /> Kevin Koehn of ETS Environmental from the backhoe bucket at a <br /> depth of twelve feet below the ground level . Total depth of <br /> the excavation was twelve feet and groundwater was not <br /> encountered. Soil sample one (S-1) <br /> was collected from the East side of the tank cradle at a <br /> depth of twelve feet below grade, and soil sample two (S-2) <br /> was collected from the West side of the tank cradle at a <br /> — depth of twelve feet below grade. <br /> The soil samples were collected by means of a hand <br /> sampling tool fitted with 2" OD brass sleeves. The <br /> laboratory samples were immediately sealed in their liners <br /> using aluminum foil-lined plastic caps taped in place. The <br /> soil samples were properly labeled with the project number, <br /> ETS ENVIRONMENTAL & ASSOC. <br /> PROJECT NO. 307 , PAGE 1 <br />