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C A M B R I A production wells Cambria also reviewed United States Geologic Survey topographic and California State Automobile Association maps to identify surface water bodies within 2,000 feet of the site Table 4 summarizes the well information, Table 5 presents the door-to-door survey results, and Figure I shows the receptor survey study area, the results of the well survey, and the surface water bodies DWR Record Review A review of California DWR records identified 12 wells within a 2,000-foot radius of the subject site The wells were installed between 1949 and 1997 Six of the wells were installed for domestic use, one was for irrigation use, two were for industrial use, one was for municipal use, and two wells were of unknown use The closest well is a municipal well located approximately 1,100 feet northeast (cross-gradient) of the Shell-branded station Available well construction information is summarized on Table 4 and the approximate well Iocations are plotted on Figure 1 Door-to-Door Survey No water production well was identified within 500 feet of the site during the door-to-door survey Three monitoring wells were identified at the Chevron service station located at 4344 Waterloo Road, approximately 250 feet east of the subject site Data obtained during the door-to-door survey is presented in Table 5 and the questionnaires are included in Appendix G Surface Water Bodies• Two surface water bodies were identified within the study area Unnamed ponds are located at the San Joaquin Storm Water Facility, which is located approximately 250 feet north of the site and a diverting canal is approximately 1,900 feet southwest of the site The surface water bodies are identified on Figure 1 Results The closest receptor to the subject site is the San Joaquin County Storm Water Facility located approximately 250 feet north of the site Data from the fourth quarter 2001 monitoring event suggest that groundwater flow direction at the subject site is toward the northwest Therefore, none of the 12 water-producing wells, the San Joaquin County Storm Water Facility, nor the diverting canal are located downgradient of the site The wells are located from 1,150 to 1,900 feet from the subject site and the diverting canal is 1,900 feet from the site Due to the large distance and direction (cross-gradient) of the receptors to the site, it is unlikely that any site activities would impact these potential receptors 1359 7