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S ECOR <br /> Conceptual Site Model <br /> Chevron Service Station #9-6171 <br /> March 25, 2005 <br /> Page 15 <br /> 6.0 SOURCES OF IMPACTS <br /> Primary sources of petroleum hydrocarbon Impacts to soil and groundwater were Identified <br /> by a database search conducted by Environmental Data Resources (EDR) and a review of <br /> historical reports conducted by SECOR A copy of the report entitled The EDR Radius <br /> Map, dated August 30, 2004, is Included In Appendix D <br /> There are several sites in the vicinity of the Chevron service station that are listed in federal <br /> databases that record reported hazardous materials contamination (Table 8) Due to <br /> changes in ownership since initial reporting began on these sites, it was necessary to <br /> determine current site use (Table 9) Businesses with documented contamination and <br /> remediation that could be responsible for contributing petroleum hydrocarbons to the plume <br /> within the A Zone and B Zone Aquifers are Identified In Figure 20 Seven leaking <br /> underground storage tank (LUST) sites and one dry cleaning facility were Identified within a <br /> one-half mile radius of the site Two LUST sites (one active and one former) and the dry <br /> cleaning facility are located within the same city block as the Chevron station Three LUST <br /> sites are located two to three blocks south of the Chevron service station Two LUST sites, <br /> both former service stations, are located two to three blocks north of the Chevron service <br /> station <br /> The following sites Include potential sources <br /> • Chevron Service Station #9-6171 <br /> ect sub <br /> { jproperty), located at 6633 Pacific <br /> Avenue, Stockton, Califomia <br /> • Shell Service Station, located at 6131 Pacific Avenue Stockton California <br /> • Canepa's Carwash, located at 6230 Pacific Avenue, Stockton, California <br /> I 0 Former Regal Service Station #603, located at 6425 Pacific Avenue, Stockton, <br /> California <br /> 0 Exxon Service Station #7-0136, located at 6425 Pacific Avenue, Stockton, California <br /> • Finest Care Cleaners, located at 6503 Pacific Avenue, Stockton, California <br /> • Former Unocal Service Station #5421, located at 7303 Pacific Avenue, Stockton, <br /> California <br /> • Lincoln Village Cleaners Inc , located at 501 Lincoln Center, Stockton, California <br /> N 1Fdes\Projects\ChevronlRetadl#9-61711Site Conceptual Model\FINAL_CSM doc <br />