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'" [ '� �t� '+f jF�P a•`�4 a �,�.. #��fs l ill RKSMA <br /> !`ET <br /> Working 7o Restore Nature <br /> 4 FEB 16 P11 3:.00 <br /> 1710 Main Street <br /> i <br /> Escalon, CA 95320 <br /> Phone: (209) 838-3507 <br /> FAX: (209) 838-3509 <br /> -February 14, 1994 s <br /> Ms. Margaret Lagorio 3 <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> i <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Subject: Soil Excavation Report, Stone Bros. Property, Sherwood Plaza Shopping.Center, 4 <br /> 5757 Pacific Avenue, Stockton, California <br /> Dear Ms. Lagorio: <br /> This letter report is submitted to summarize excavation activities conducted at the above <br /> referenced site (Plate 1). The excavation was performed to remove hydrocarbon.impacted soil <br /> associated with underground fuel storage tanks formerly located on the subject site. <br /> SITE BACKGROUND <br /> On October 15, 1993, hydrocarbon contamination of soil was noted during the removal of three _ <br /> underground fuel tanks at the subject site. The three tanks-removed consisted of one 550-gallon <br /> diesel and two 2,000-gallon unleaded gasoline tanks. Upon removal, the tanks exhibited no <br /> holes or corrosion and appeared to be in good condition. <br /> i <br /> Soil samples were collected.from the bottom of the tank pits during tank removal. Laboratory <br /> analyses determined that soil samples (TP242'E, TP2-11'W and .TP3-13'E) collected from <br /> beneath the two unleaded fuel tanks contained detectable concentrations of total petroleum <br /> hydrocarbons as .gasoline (TPHg) The highest recorded concentration of TPHg (82 parts per <br /> million [ppm]); was detected at the eastern end (tank fill end) of the central unleaded .tank. <br /> Analytical data is summarized as Table 1. : Initial soil sample locations are exhibited on Plate- j <br /> 1500531REPORTSIEXCV—294.FNL <br />