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C A M B R I A <br /> July 20, 2000 <br /> Mr Ron Rowe <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 Report <br /> Shell-branded Service Station - <br /> 620 West Charter Way <br /> Stockton, California r <br /> SAP Code 136147 <br /> Incident No 98996187 <br /> SJCPHS/EHD Site Code 1058124 <br /> Dear Mr Rowe <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 define the extent of hydrocarbons in <br /> soil and groundwater beneath the site Cambria followed the scope of work presented in our <br /> August 17, 1999 Site Investigation Work Plan, which was approved in San Joaquin County <br /> Public Health Services Environmental Health Division (SJCPHS/EHD) correspondence dated <br /> September 10, 1999 The work was performed in accordance with SJCPHS/EHD and Central <br /> Valley Regional Water Quality Control Board (RWQCB) guidelines <br /> SITE BACKGROUND <br /> Site Description The subject site is an active Shell-branded service station located at 620 <br /> West Charter Way east of Interstate 5 in Stockton, California (Figure 1) The site layout <br /> includes a service station building, six dispenser islands, a fuel underground storage tank (UST) <br /> complex, and a car wash (Figure 2) <br /> Oakland CA Previous Investigations. In February 1989, Delta Environmental Consultants (Delta) drilled <br /> San Ramon, CA eight soil borings to assess site conditions prior to UST removal and replacement activities <br /> s o n o m a C A In November 1989, four USTs were excavated and removed Soil samples were collected <br /> Portland OR <br /> from former tanks and product line trench excavations <br /> Cambna <br /> Environmental Between December 1989 and January 1990, Delta installed groundwater monitoring wells <br /> Technology,inc MW-1 through MW-7 Underground piping was installed to wells MW-2, MW-3, MW-4, <br /> Perkins Street <br /> Box 259 <br /> oma CA 95476 <br /> 707)935-4850 <br /> (707)935-6649 <br />