Laserfiche WebLink
C A M B R I A <br /> October 3, 2003 <br /> Ms Lon Duncan <br /> San Joaquin County Environmental Health Department <br /> 304 E Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Re Site Conceptual Model/Site Investigation Work Plan <br /> Shell-branded Service Station <br /> 6131 Pacific Avenue <br /> Stockton,California <br /> SAP Code 136149 <br /> Incident No 98996189 <br /> SJCEHD Site Code 1223 <br /> Dear Ms Duncan <br /> r-n Cambria Environmental Technology, Inc (Cambria) prepared this site conceptual model and <br /> rn o �ork plan on behalf of Equilon Enterprises LLC dba Shell Oil Products US (Shell) in response to <br /> Qn Joaquin County Environmental Health Department's (SJCEHD's) August 12, 2003 letter <br /> va- e scope of work presented in this work pian complies with SJCEHD and Regional Water <br /> - uahty Control Board (RWQCB)guidelines <br /> C <br /> «' w LalITEDESCRIPTION AND BACKGROUND <br /> Site Location and Description <br /> The subject site is an active Shell-branded service station located on the southwest corner of the <br /> intersection of Pacific Avenue and Porter Avenue in a mixed commercial and residential area of <br /> Stockton, California(Figure 1) The site layout includes three existing fuel underground storage <br /> tanks (USTs), four dispensers, a service station building, and a former UST complex (Figure 2) <br /> Previous Work <br /> Oakland CA During March 1990, Aegis Environmental Consultants (Aegis) of Roseville, California drilled <br /> San Ramon CA fourteen soil borings near the former (then existing) and current (then proposed) UST locations <br /> Sonoma CA The highest concentrations were from a soil boring at the southwest corner of the former UST <br /> CamlSna location Maximum concentrations were 17,000 parts per million (ppm) low/medium boiling <br /> Environmental point hydrocarbons quantitated against a gasoline standard and 400 ppm benzene, both at a depth <br /> Technology, Inc of 15 feet below grade (fbg) In June 1990, the former USTs were removed, and Aegis collected <br /> *erkins Street six soil samples from beneath the USTs and six soil samples beneath product lines The highest <br /> P 0 Box 259 <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />