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1260 Graphics Drive <br /> 1..1✓/ - -- -- �t Modesto California <br /> AV 11J/l 91 <br /> 209 579 222 2221 <br /> ` Fax 209 579 2225 <br /> CL, <br /> A S S 0 C I A T E S I N C _ <br /> August 28 1998 <br /> 14885 <br /> Ms Carol Oz <br /> San Joaquin County Public Health <br /> Services, Environmental Health Division <br /> 304 E Weber Street, Third Floor <br /> Stockton, CA 95202 <br /> Subject Summary Report for Subsurface Investigation at Three Palms Grocery located at <br /> 6732 East Highway 88, Stockton, Califorma <br /> Dear Ms Oz <br /> ATC Associates, Inc has prepared this report on behalf of Ms Lolly Bozzano to summarize <br /> • subsurface investigation activities performed at the above referenced site The purpose of the <br /> subsurface investigation is to evaluate vertical extent of petroleum hydrocarbon contamination, if <br /> any, in the vicinity of the former underground storage tanks (USTs) The activities performed at <br /> the project site are described in detail in the following paragraphs <br /> SITE LOCATION <br /> The site is located on the northeast side of Fairchild Lane and the southeast side of Highway 88 in <br /> Stockton, California, as shown on Figure 1 The location is a commercial and agricultural area <br /> and the site is currently occupied by Three Palms Grocery <br /> BACKGROUND <br /> Prior to July 1984, one 550-gallon waste oil UST, identified as Tank#4, was emptied of product, <br /> filled with sand, and capped with concrete In November 1986, one 1,000-gallon regular gasoline <br /> UST, identified as Tank #3, was removed and disposed of A soil sample collected during the <br /> removal of Tank #3 contained elevated concentrations of petroleum hydrocarbons In May 1989, <br /> one 1,000-gallon unleaded gasoline UST, identified as Tank #1 was filled with five cubic yards of <br /> concrete Currently, two other USTs remain in place and are in operation at the site These <br /> USTs are located approximately 40 feet east of the tanks which were closed in place <br /> w 114885`r"rts\sum doc 1 <br />