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, po <br /> r 1 I V <br /> CAMBRIA = <br /> February 10, 2000 <br /> Mr Jeffrey Wong <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Re Site Investigation/Fourth Quarter 1999 Groundwater Monitoring Report <br /> Former Shell Service Station <br /> 880 Victor Road <br /> Lodi, California <br /> SAP Code 135446 <br /> Incident No 98995526 <br /> SJCPHS/EHD Site Code 1746 <br /> Dear Mr Wong <br /> Cambria Environmental Technology, Inc (Cambria) prepared this report on behalf of Equiva <br /> Services LLC (Equiva) to document the recent site investigation activities at the above <br /> referenced site The purpose of the investigation was to identify the product release source <br /> • area and to delineate the vertical extent of petroleum hydrocarbons and methyl tertiary butyl <br /> ether (MTBE) in soil in the source area The scope of work followed during this <br /> investigation was presented in Cambria's September 1, 1999 Site Investigation Work Plan <br /> The investigation was initiated by San Joaquin County Public Health Services Environmental <br /> Health Division (SJCPHS/EHD) June 21, 1999 correspondence, and the work was performed <br /> in accordance with SJCPHS/EHD and Central Valley Regional Water Quality Control Board <br /> (RWQCB)guidelines <br /> SITE BACKGROUND <br /> Site Description The subject site is currently a non-operating gasoline station located on the <br /> southeast corner of the intersection of Victor Road and Beckman Road in Lodi, California <br /> (Figure 1) The site layout includes a service station building, two dispenser islands, a fuel <br /> Oakland CA underground storage tank (UST) complex, and a waste oil tank (Figure 2) <br /> Sonoma CA <br /> P O T t l a n d OR Previous.Investigations During December 1994, four single-walled steel USTs (two 10,000- <br /> Seattle <br /> 0,000- <br /> SeattIe WA gallon and two 6,000-gallon) and associated product piping were removed Petroleum <br /> Cambria hydrocarbons were detected in soil samples collected from beneath the former dispenser <br /> Environmental islands and product piping and in the southeastern half of the UST excavation Fugro West, <br /> Technology,Inc Inc (Fugro) of Roseville, California performed over-excavation beneath the dispenser area <br /> *erkins Street and UST complex and collected additional soil samples One soil sample collected from the <br /> P 0 Box 259 <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> Fax(7o7)935-6649 <br />