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-- IT Corporation <br />' 3939 Cambridge Road Suite 220 <br /> Cameron Park, CA 95682-9007 <br /> . Tel 530 676 6884 <br /> the <br /> _ Faz�530 676`688I <br /> I e(Irigroup. <br /> � — � ar� �`�_ly 1 7 � <br /> C,.. ` Able bei of The IT Croup <br /> -: 1 S <br />' May 2, 2000 <br /> Project 792774 01000000 <br /> Mr Don Rodgers <br /> 11900 South Union Road <br />' Manteca, California 95336 <br /> Re First Quarter 2000 Status Report for The Transmission Shop, Located at <br />' 515 West Charter Way, Stockton, California <br /> Dear Mr Rodgers <br />' At your request, IT Corporation (IT) currently performs quarterly groundwater monitoring and <br /> remediation system operation and maintenance (O&M) at the subject site (see Figure 1) IT has <br />' prepared this status report on the work conducted during the first quarter 2000 Work included <br /> groundwater monitoring, remediation system startup and remediation system O&M <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 Thorpe Oil of Lodi, California, removed the second UST in February 1996 Residual <br /> hydrocarbons were detected in soil samples collected from beneath the UST However, total <br /> petroleum hydrocarbons as gasoline (TPHG), as diesel (TPHD), and benzene were below <br />' laboratory detection limits The approximate UST locations relative to site structures are shown <br /> on Figure 2 <br /> In the vicinity of the subject property are several former or current UST facilities a former <br /> ARCO Service Station, a Chevron Service Station, a Texaco Service Station, a former Colombo <br /> bakery, and a former Dolly Madison Based on data collected from subsurface investigations <br /> performed at the former ARCO Service Station, Chevron Station, and Texaco Station (located at <br /> the corners of Charter Way and Lincoln Street), residual and dissolved hydrocarbons have been <br /> detected beneath these facilities, and a commingled petroleum hydrocarbon plume exists beneath <br /> Charter Way and Lincoln Street <br /> I <br /> MN 1CamPklDatiLWehive�Rodgers\Qtrly\RDGR1g00 doc-98ut i IT Corporation <br />