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C A M B R I A <br /> April 18, 2002 <br /> Mr Jeffrey Wong <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Re Site Investigation Report and Site Conceptual Model <br /> Former Shell Service Station/Econogas 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 /> Effective March 1, 2002, Equiva Services LLC and Equilon Enterprises LLC are now doing <br /> business as Shell Oil Products US (Shell) Cambria Environmental Technology, Inc (Canibna) <br /> prepared this report on behalf of Shell to document the site investigation activities at the above <br /> referenced site The purpose of the investigation was to assess the extent of petroleum <br /> hydrocarbons and methyl ternary butyl ether(MTBE) in soil and groundwater beneath the site in <br /> the vicinity of the underground storage tanks (USTs) Cambria followed the scope of work <br /> presented in our July 3, 2000 Response LetterlSite Investigation Work Plan and approved in San <br /> Joaquin County Public Health Services, Environmental Health Division (SJCPHS/EHD) <br /> correspondence dated July 3, 2001 SJCPHS/EHD March 30, 2000 correspondence initiated the <br /> investigation, and the work was performed in accordance with SJCPHSIEHD and Central Valley <br /> Regional Water Quality Control Board (RWQCB)guidelines <br /> SITE BACKGROUND <br /> F , <br /> ,te <br /> i <br /> Site Description. The site is currently an operating Econogas fuel stati64 hKAtN on the <br /> southeast corner of the intersection of Victor Road and Beckman RoacV nv fit. (:A16rma <br /> (Figure 1) Shill ceased operations at the site during December 1998 and soU the si;atioa and <br /> o a k I a n d CA property to the current owner during March 2001 The site layout mclud6- a service, station <br /> San Ramon GA j <br /> Sonoma C A building, two dispenser islands, and a fuel UST complex (Figure 2) -0 r� <br /> Cambria Previous Investigations During December 1994, four single-walled steel USTs (two 10,000- <br /> Enrnronmental <br /> Technology,me gallon and two 6,000-gallon) and associated product piping were removed Petroleum <br /> hydrocarbons were detected in soil samples collected frog beneath the former dispenser,�islands <br /> �erkms street d <br /> P 0 Box 259 <br /> i <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />