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EXCELTECH <br /> 41674 CHRISTY STREET FREMONT, CA 94538 <br /> PHONE (415) 659-0404 • CONTR. LIC. NO. 464324 <br /> San Joaquin Local Health Division June 15, 1987 <br /> 1601 East Hazalton Avenue Project 4097E <br /> Stockton, California 95201 <br /> Attention: Mr Doug Wilson <br /> RE: Vadose Well Backfill Observation <br /> Three Quik Stop Market Sites <br /> Stockton, California <br /> Dear Mr. Wilson, <br /> We are sending you this letter regarding the observation of the backfill material used for vadose <br /> wells at the following Quik Stop Market sites;Q. S.#76 located 1030 S. Olive Street;.Q:S*U <br /> -1;201q tec at;,932V horton;Road�:and Q. S.#121 located at W. Louise Avenue all in <br /> Stockton, California. The purpose of the observation was to verify that the backfill material was <br /> tank backfill composed of either pea gravel or sand. <br /> The procedure used in the field was as follows;a 1/2-inch steel probe pipe was bored in the <br /> backfill and the observation of the backfill was made by the undersigned engineer. A <br /> representative of the San Joaquin Local Health Division was present during the procedure. <br /> In our opinion, the material observed was of a type used for tank backfill, either pea gravel or <br /> sand. <br /> If you have any questions, please call. <br /> Sincerely, f <br /> Exceltech, Inc. , <br /> Christopher M. Palmer C. E. G. 1262 Kenneth G. Sorenson <br /> Manager, Geotechnical Services Civil Engineer <br /> 1 �1 <br /> AUG 10 ,qrp <br /> ENVIROMENTAL HEALTH <br /> FERMIT/SERVICES <br />