Laserfiche WebLink
ic�lc <br /> A S S O C I A T E S I W C <br /> Summary Report of <br /> Supplemental Subsurface Investigation <br /> Three Palms Grocery <br /> 6732 East Highway 88 <br /> Stockton, California <br /> ATC Project No 54 14885 0001 <br /> I <br /> 1 <br /> 1.0 MTRO DUCTIION <br />' ATC Associates Inc (ATC) has prepared this report on behalf of Ms Lolly Bozzano, the <br /> property owner, to summarize findings of the supplemental subsurface investigation performed at <br />' the Three Palms Grocery site (Figure 1) The purpose of the proposed work was to further <br /> evaluate the extent of reported petroleum hydrocarbon contamination in the vicinity of the former <br /> underground storage tanks (USTs) The findings of the subsurface investigative study are <br /> summarized in the following paragraphs <br /> 1.1 Site Location <br /> The site is located on the south side of Highway 88 (Waterloo Road and on the east side of <br /> g Y ) <br /> Fairchild Lane, Stockton, California, as shown on Figure 1 The site is presently occupied by <br />' Three Palms Grocery (a convenience store), a beauty salon, and an adjacent residence A <br /> . domestic well, which provides water to the site, is located north of the residence (Figure 2) <br />' 1_2 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 /> 4n June 18, 1998, an ATC geologist supervised the advancement of two soil borings (SB 1 and <br /> SB2) to 86 5 feet below ground surface (bgs) to assess subsurface conditions at the site <br /> Petroleum hydrocarbon constituents were detected in soil samples collected from borings SBI <br /> and S132 The highest reported constituent concentrations were detected in soil samples collected <br /> at 25 5 feet bgs in each of the borings The highest concentrations of petroleum constituents at <br /> this depth were detected in SBI and include total petroleum hydrocarbons as gasoline (TPHg) <br /> w 1148851,woM\Sum2004 doc 1 <br /> I <br />