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. A sensitive receptor survey for the site was conducted in April 2002 (Appendix C) According to the California Department of Water Resources—Central District Records, four domestic water wells are located within 2,000 feet of the site An area reconnaissance survey conducted by Advanced GeoEnvironmental, Inc identified three additional domestic water wells and seven monitoring wells within 2,000 feet of the site The California Water Service Company reported one active municipal water well approximately 3,500 feet west of the site The nearest surface water body (approximately 1,200 feet) is the Stockton Diverting Canal located north and west of the site A Receptor Map showing the water well locations is included in Appendix C The groundwater gradient is consistently towards the south-southwest based on past monitoring events Four domestic water wells are located down-gradient from the site The closest down- gradient water well is located approximately 200 feet south of the site According to the Water Well Dnllers Report, this well is screened from 185 to 225 feet below ground surface (bgs) and is sealed from 0 to 100 feet bgs Other available records indicate that most water wells in this area are completed below 125 feet due to seasonal water fluctuations and the lack of sufficient aquifers above that depth Non-impacted monitoring wells (MW-8, MW-9, MW-10, and MW-12) are located between the Compass site and the down-gradient domestic water wells . Determination ofApplrcable Cleanup Levels Based on the sensitive receptor survey conducted in April 2002, the Former Canteen Facility hes within an area of current beneficial use Cleanup levels for the impacted soil will follow the EPA Region 9 Preliminary Remediation Goals(PRGs) Cleanup levels for groundwater will follow the California Department of Health Services Drinking Water Standard Maximum Contaminant Levels (CAMCL) • II-4