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r <br /> Delta <br /> Environmental <br /> !/ Consultants, Inc. <br /> 3330 Data Drive, Suite 100 <br /> Rancho Cordova, CA 95670 <br /> 916/638-2085 <br />' FAX 9161638-8385 <br />' December 17, 1990 <br />' Mr Bill Gard <br /> President <br /> Delta Bay Builders, Inc <br /> Post Office Box 99 <br /> Antioch, California 94509 <br />' Subject Soil Analytical Results <br /> 2000 Stinson Street, Stockton, California <br /> Delta Project No 40-90-024 <br />' Dear Mr Gard <br /> On October 24, 1990, Delta Environmental Consultants, Inc (Delta), collected three soil samples <br /> approximately five and a half feet below the north end of the concrete slab used to anchor the former <br /> underground storage tanks at the subject site (see enclosed figure) Methods used for the collection of <br /> these soil samples are described in Enclosure A. Ground water was not encountered in any of these <br />' hand borings No odor or discoloration of the soil was noticed in soil Samples Nos 1 and 2 Soil <br /> Sample No 3 had a slight petroleum odor and was slightly discolored Soil sample analytical results are <br /> summarized in Table 1 Copies of the certified laboratory analytical results are contained All <br /> Enclosure B <br /> TA}3I.1; 1 <br />' Soil Sample Analytical Results <br /> Concentrations in Parts Per Million (ppm) <br /> October 24, 1990 <br /> Depth (feet Ethyl- TPH as TPH as <br /> Location below grade) Benrene Toluene benzene Xylenes Diesel Jet Fuel <br /> HB-1 55 <0 005 <0.005 <0 005 <0 005 <10 <10 <br /> 1 H13-2 55 <0 005 <0 005 <0 005 <0.005 <10 <10 <br /> H13-3 55 <0 005 <0.005 <0.005 <0 005 11 14 <br /> i <br /> Practical Soluuons to Environmental Concerns <br />