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THRIFTY OIL CO. <br /> January 8, 1988 Y 4l[SPL <br /> EN wIERtOi/SERNi1C tS <br /> Diane Henson <br /> San Joaquin County <br /> Environmental Health Department <br /> 1602 E. Hazelton <br /> Stockton, Ca 95201 <br /> RE: Thrifty Oil Co. Station #171 <br /> 1250 N. Wilson Way <br /> Stockton, CA <br /> Dear Ms. Henson, <br /> Enclosed please find a copy of Hydrotech Consultants, Inc. 's <br /> t of Subsurface Investi ation dated January 7, 1988 for the <br /> above referenced station. <br /> Review of the attached report will disclose that laboratory <br /> analysis of the soil samples will indicate less than 10 ppm of Total <br /> Petroleum Hydrocarbon in all but one. The sample taken at 10' below <br /> ground surface in boring 4 did indicate suspended hydrocarbon <br /> presence but you will note that the boring was clean at the 20' <br /> level. Based on this report and the fact that the surrounding soils <br /> are very hard and dense and that there is no apparent danger to <br /> health or groundwater, I request that nor further work be required at <br /> this site. <br /> Please contact me if you have any questions or require more <br /> information. <br /> Very truly yours, <br /> Peter D'Amico <br /> Manager <br /> Environmental Affairs <br /> PD/dmt <br /> cc: Barbara Biles, Manager of Corporate Affairs <br /> C7 • <br /> 10000 Lakewood Boulevard, Downey, California 90240 (213) 923-9876 <br />