ARCHIVED REPORTS XR0001187 - Laserfiche WebLink

Home Browse Search

Emcon 1433 North Market Boulevorc .Sacramento California 95834-1943 • (916)928-3300 • Fax(916)928-3341 l� February 13, 1997 Project 2613-100 01 Mr. Don Rodgers 11900 South Union Road Manteca, California 95336 Re Fourth Quarter 1996 Status Report for the Transmission Shop, Located at 515 West Charter Way, Stockton, California Dear Mr. Rodgers At your request, EMCON has previously conducted an environmental investigation and currently performs quarterly groundwater monitoring at the subject site (see Figure 1) EMCON has prepared this status report on the work conducted during the fourth quarter 1996 Work included groundwater monitoring, which consisted of measuring depth to groundwater, collecting a groundwater sample from the well for subjective and laboratory analyses, and evaluating the groundwater gradient and direction of groundwater flow beneath the site BACKGROUND The site is located at the southeast corner of the intersection of Charter Way and Lincoln Street in Stockton, California (see Figure 1). The property is located in a commercial area and is currently being used as a transmission repair shop Based on information provided by the San Joaquin County Public Health Services (SJCPHS), two underground storage tanks (USTs) were present and the site was historically used as a retail service station, with gasoline dispensing activities ceasing sometime in the 1950s. It is unknown when one of the USTs and dispenser islands were removed However, based on information provided by SJCPHS, Thorpe Oil of Lodi, California, removed the remaining UST in February 1996 Residual hydrocarbons were detected beneath the UST However, total petroleum hydrocarbons as gasoline (TPHG) and diesel (TPHD), and benzene were below laboratory detection limits. The approximate UST locations relative to site structures are shown on Figure 2 In the vicinity of the subject property is a former ARCO Service Station, a Chevron Service Station,a Texaco Service Station,a former Colombo bakery, and a former Dolly Madison facility, which all have previously or currently have USTs. Based on data collected from subsurface investigations performed at the former ARCO Service Station, Chevron Station, and Texaco Station (located at the corners of Charter Way and Lincoln Street), residual and dissolved hydrocarbons have been detected beneath these: tacillties and a commingled plume exists beneath Charter Way and Lincoln StreeL SAC.N-pin613\2613 LOGO 1A5--97Wb2