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A M B R I A <br /> February 27, 2004 <br /> Mr Michael Infurna <br /> San Joaquin County Environmental Health Department <br /> 304 E Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Re Site Investigation Report <br /> Former Shell Service Station <br /> 1267 Country Club Boulevard <br /> Stockton, California <br /> SAP Code 129480 <br /> Incident No 97093419 <br /> SJCEHD Site Code 505602 <br /> Dear Mr Infuma <br /> Cambria Environmental Technology, Inc (Cambria) prepared this report on behalf of Equilon <br /> Enterprises LLC dba Shell Oil Products US (Shell) to document the site investigation activities at <br /> the referenced site The primary purpose of this investigation was to further assess the vertical <br /> extent of hydrocarbons in groundwater beneath the site Cambria followed the scope of work <br /> presented in our November 19, 2002 Response Letter/Sate Conceptual Model/Site Investigation <br /> Work Plan, which was conditionally approved in San Joaquin County Environmental Health <br /> Department (SJCEHD) correspondence dated January 8, 2003 The work was performed in <br /> accordance with SJCEHD and Central Valley Regional Water Quality Control Board (RWQCB) <br /> guidelines <br /> SITE LOCATION AND DESCRIPTION <br /> The subject site is located on the northeast corner of the intersection of Country Club Boulevard <br /> and Pershing Avenue in a mixed commercial and residential area of Stockton, California <br /> (Figure 1) The subject site is presently occupied by a credit union The site was developed in <br /> 1949 as a Shell-branded service station, which ceased operation in 1974 A total of four fuel <br /> underground storage tanks (USTs) and one waste oil UST were operated as part of th e <br /> station The approximate locations of these tanks are shown on FigureVD <br /> � � <br /> PREVIOUS WORK MAR Q 3 2a�� <br /> Cambria <br /> Sw <br /> Environmental 1995 Soil Borings- During April 1995, Geosystem Consultants, Inc ( ��i� ine, <br /> Technology, Inc California drilled eight soil borings (B-1 through B-8) Soil samples were collected from all the <br /> OPerkins Street borings and groundwater samples were collected from three of the borings (B-2, B-3, and B-6) <br /> P 0 Box 259 <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />