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G.E{RowN JP, <br /> 0-1 ..RPN I�4` Boards MATTHEW RODRIQUEZ <br /> Watt � •('RET RFOP <br /> MENTAL <br /> ,'RET/fk'NTAI.PROTECTION <br /> State Water Resources Control Board <br /> USTCF 5-YEAR REVIEW SUMMARY <br /> 5T" REVIEW— JULY 2012 <br /> Agency Information <br /> Agency Name: San Joaquin County Address: 1868 East Hazleton Avenue, <br /> Environmental Health Stockton, CA 95205 <br /> Department Count <br /> Agency Caseworker: Harlin Knoll Case No.: 1830 <br /> Case Information <br /> USTCF Claim No.: 13455 Global ID: T0607700821 <br /> Site Name: Three Palms Grocery Site Address: 6732 East HWY 88, <br /> Stockton, CA 95205 <br /> Responsible Party (RP): Three Palms Address: 6732 East HWY 88, <br /> Grocery Stockton, CA 95205 <br /> USTCF Expenditures to Date: $440,055 Number of Years Case Open: 14 <br /> Summary <br /> A leak was identified in February 1998. Since 1999, 5 monitoring wells have been installed and <br /> have been monitored. Soil vapor extraction operated for 9,058 hours removed 2,666 pounds of <br /> TPHg. According to data available in GeoTracker, there is five California Department of Public <br /> Health (CDPH) regulated Public Supply Wells within '/2 mile of the site. The nearest well is 685 <br /> feet southeast from the Site. To date, $440,055 in corrective action costs have been <br /> reimbursed by the Fund. Attachments 1 and 2 provide the technical data to support our <br /> recommendation. <br /> Recommendation <br /> Source area monitoring well MW-1 has historically had low concentrations of residual <br /> hydrocarbons in groundwater. However, after 12 years of monitoring, the source area <br /> groundwater concentrations have decreased in concentration. Analytical data indicate that <br /> WQOs have nearly been achieved in all site wells. Based on facts in the record and hydrologic <br /> and geologic conditions at the site, the limited residual petroleum hydrocarbons that remain in <br /> soil and groundwater pose little risk to human health, safety and the environment. The Fund <br /> recommends that the County review this site for closure. <br /> d <br /> Kik Larson, P.G. Date Robert Trommer, C.H.G. Date <br /> Engineering Geologist Senior Engineering Geologist <br /> Technical Review Unit Chief, Technical Review Unit <br /> (916) 341-5663 (916) 341-5684 <br /> CHARLES R. HOPPIN, CHAIRMAN l THOMAs HOWARD. EXECUTIVE DIRECTOR <br /> �no1 1 STTee(,S,r•.ran�emn.CA 95314 1 Mailing A(Wress:P.O.Box 100,Sacramento.CA 95812-0100 1 www.waterboaids.ca.gov <br /> PEGVGLE_ PAPN, <br />