ARCHIVED REPORTS XR0002718 - Laserfiche WebLink

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31•rte-,,'', Between 1958 and 1987, parcel 53 was occupied by various retail and service oriented . 'companies, including an air conditioning and awning company, a paint store, a piano store, an art gallery and, most recently, a fast photo store. The parcel has been vacant since 1988. It is our understanding that an above-ground storage tank containing carbon tetrachloride was present on parcel 53, during the period that the site was operated as a dry. cleaners. Sanborn Fire Insurance maps confirm the presence of a solvent tank in 1950. Copies of the ' Sanborn maps are included in Appendix A. Carbon tetrachloride was in general use during the first half of the century as a dry cleaning ' agent. However, because it is highly corrosive and very expensive, most dry cleaners abandoned the use of carbon tetrachloride. Furthermore, because of the expense and very strong odor that it generated, the solvent was rarely dumped out or thrown away; usually ' it was drummed for recycling. It is not known how long carbon tetrachloride was.used at this site or what handling procedures were observed. ' 2.2 Underground Storage Tank Removal In February 1974, Stockton Fire Department records indicated that four (4);underground ' tanks were removed. The tanks consisted of one (1) 4,000 gallon fuel tank, two (2) 3,000 gallon fuel tanks and one (1) 550 gallon waste oil tank. A total of four fueling.islan,ds were located on site. y d an environmental audit of the roe in 1990 and WHF Environmental performed property rtY discovered a waste oil tank that had not been removed in 1974. It is unclear whether this ' tank was one reported to have been removed in 1974, or an additional tank. Permits were obtained and the tank was removed. Analytical results of soil samples collected at the time of removal showed 10,000 ppm (sample Tank #39-2514-01112') of,motor oil at 12 feet below ' the surface (two feet below the tank). Soil beneath the tank was excavated to a depth of 15 feet. Petroleum hydrocarbons (motor oil) were detected at 3,400 ppm in a sample collected at 15 feet (RE#2-15'); the waste oil fill line was removed after demolition of the building in January 1992. ' 2.3 Other Potential Leaking Underground Storage Tank (LUST) Sites ' At least two potential LUST sites are Iocated near this site. According to a representative of the PHS/EHD, the parcel directly across Harding Way, now a Jack-in-the-Box, was a gasoline retailer in the past; no information is available concerning the tank removal and ' sampling (if sampling was performed). A gasoline service station was also located directly across Madison Street, the current location of a property management company. ' Additionally, there is speculation that the City of Stockton used to operate UST's in the sidewalk along Harding Way. These UST's were used to provide fuel oil to street lamps G.,Y;.0 A."a.,.:,..,I- 4