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a drVrS-ion of <br /> ENVIRONMENTAL SOLUTIONS imcon �J <br /> .) <br /> June 4, 1998 <br /> Project 2613-100 01 <br /> Mr Don Rodgers <br /> 11900 South Union Road <br /> Manteca, California 95336 <br /> Re Fust Quarter 1998 Status Report for The Transmission Shop, Located at <br /> 515 West Charter Way, Stockton, California <br /> Dear Mr Rodgers <br /> At your request, Pinnacle Environmental Solutions (formerly EMCON), a division of EMCON, <br /> previously conducted an environmental investigation and currently performs quarterly groundwater <br /> monitoring at the subject site (see Figure 1). Pinnacle Environmental Solutions (Pinnacle) has prepared <br /> this status report on the work conducted during the first quarter 1998. Work included groundwater <br /> monitoring, which consisted of measuring depth to groundwater and collecting a groundwater sample <br /> from the well for subjectrve and laboratory analyses. <br /> • <br /> BACKGROUND <br /> The site is located at the southeast corner of the intersection of Charter Way and Lincoln Street in <br /> Stockton, California (see Figure 1) The property is located in a commercial area and is currently <br /> being used as a transmission repair shop Based on information provided by the San Joaquin <br /> County Public Health Services (SJCPHS), two underground storage tanks (USTs) were present, <br /> and the site was historically used as a retail service station, with gasoline dispensing activities <br /> ceasing sometime in the 1950s It is unknown when one of the USTs and dispenser islands were <br /> removed However, based on uiforrmatlon provided by SJCPHS, Thorpe Oil of Lodi, California, <br /> removed the remaining UST in February 1996 Residual hydrocarbons were detected beneath the <br /> UST However, total petroleum hydrocarbons as gasoline (TPHG), as diesel (TPHD), and <br /> benzene were below laboratory detection linuts The approximate UST locations relative to site <br /> structures are shown on Figure 2 <br /> In the vicinity of the subject property is a former ARCO Service Station, a Chevron Service <br /> Station, a Texaco Service Station, a former Colombo bakery, and a former Dolly Madison facility, <br /> which all previously or currently have USTs Based on data collected from subsurface <br /> investigations performed at the former ARCO Service Station, Chevron Station, and Texaco <br /> Station (located at the corners of Charter Way and Lincoln Street), residual and dissolved <br /> hydrocarbons have been detected beneath these facilities, and a commmgled plume exists beneath <br /> Charter Way and Lincoln Street. <br /> SAC�N\PJZ2613\26131000 3AB-981bawas 1 AMM44& <br /> n 1A 109 <br /> 3939 Cambridge Road,Suite 220 Cameron Park Caldornia 95682 (530)676 6884 (530)676 6885 Fax <br />