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d Phase I Environmental Site Assessment } City of Stockton Multi-Modal Station/Shopping Center Pagel b 1 � Sam Lung Laundry, Inc A 742 E Main Street There is a permit to operate as a small quantity hazardous waste generator facility issued by the PHS/EHD for the year 2000 Valley Motors 800 E.Main Street, Stockton, CA Fourth Quarter 2000 Report, dated January 5, 2001 Groundwater monitoring activities took place on December 8, 2000, at Valley Motors, a wholesale used car dealership In 1990, 2 underground storage tanks (USTs) were removed Groundwater and soil 1 investigation activities started in 1994 The average depth to water was 32 feet for the December 8, 2000 event, which is approximately 3 5 to 13 feet above the well screens in VM-I, VM-2, VM-3, and VM-4 No water was found in VT-1 and SW-1, which have a total depth of 31 5 feet below ground surface(bgs) The groundwater gradient is to the east to northeast Recently, there has been a decrease in the concentrations of hydrocarbons in the groundwater samples collected at the site accompanied with an increase in groundwater elevation Concentrations of TPH-G have ranged from ND to 110,000 gg/L and benzene from ND to 6,790 gg/L Samples were last analyzed for MTBE in 1996 Upgradient Environmental Consultants waisted to conduct an SVE/air sparging pilot test, but as the depth to water is below the bottom of SW-1, these activities cannot yet take place 641 E. Weber Two 6,000-gallon USTs and on 5,000-gallon UST were removed on September 30, 1986 The site received a"no further action" letter from PHS/EHD on February 16, 1994 Greer Auto Parts,Inc 910 E.Weber Avenue There is a permit to operate as a small quantity hazardous waste generator facility issued by the ' PHS/EHD for the year 2001 4 2 1.2.3 Locations 500-1,000 feet from the site Southern Pacific Transportation Company 1004 E. Lindsay Final Site Report, Underground Storage Tank Removal, Southern Pacific Transportation Company, Stockton, California, dated 29 March 1989 One 1,000-gallon UST was removed from the site on February 10, 1988 Upon removal of the UST, soil discoloration was noted at six feet bgs Excavation was completed to a depth of 13 feet Total volatile petroleum hydrocarbons were detected at 8 8 ppm in a soil sample from this tank removal a h Scott Brothers Sign Company 1011 E.Lindsay According to an undated report there is one current 500-gallon waste oil UST on site and three closed t USTs .lack Renney Buick 415 E Miner Street Two USTs were removed on May 16, 1988 Both the 1,000-gallon and the 350-gallon tanks stored waste oil One soil sample was collected from underneath each tank One tank was in good condition upon removal The second tank was removed from a cement vault and had numerous holes in it Water was ' r ILJ* caivnoe