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EDMUND O. BROWN JR. y�. GOVERNOR two oAa renniA , MATTHEW RODRIQUEZ II Water Boards `/ SECRETARY ENVIRONMENTAL PROTECTION State Water Resources Control Board DRAFT REVIEW SUMMARY REPORT — CLOSURE SEVENTH REVIEW — FEBRUARY 2015 Agency Information Agency Name: San Joaquin County Address: 1868 East Hazelton Avenue Environmental Health Stockton, CA 95205 Department Count Agency Caseworker: Vicki McCartney Case No . : 1112 Case Information USTCF Claim No. : 14349 GeoTracker Global ID: T0607700124 Site Name: Guardino — Crawford Company Site Address: 517 West Fremont Street Stockton, CA 95203 Responsible Party: Guardino — Crawford, Address: 517 West Fremont Street --Company Stockton, CA 95203 USTCF Expenditures to Date: $349, 043 Number of Years Case Open: 27 To view all public documents for this case available on GeoTracker use the following URL: http://Aeotrackerwaterboards.ca.gov/profile report.asp?talobal id=T0607700124 Summary The Low-Threat Underground Storage Tank (UST) Case Closure Policy (Policy) contains general and media-specific criteria, and cases that meet those criteria are appropriate for closure pursuant to the Policy. This case meets all of the required criteria of the Policy. Highlights of the case follow: This case is a former storage facility and is currently unoccupied . An unauthorized release was reported in February 1988 . One gasoline UST was removed in September 1989. Soil vapor extraction and air sparging were conducted since April 2014 , which removed 503 pounds of total petroleum hydrocarbons as gasoline (TPHg) as of December 2014, Since 1999, eight groundwater monitoring and three remediation wells have been installed and monitored . According to groundwater data, water quality objectives have been achieved or nearly achieved except TPHg in the source area. The petroleum release is limited to the soil and shallow groundwater. According to data available in GeoTracker, there are no public water supply wells or surface water bodies within 250 feet of the defined plume boundary. No other water supply wells have been identified within 250 feet of the defined plume boundary in files reviewed. The unauthorized release is located within the service area of a public water system, as defined in the Policy. The affected shallow groundwater is not currently being used as a source of drinking water, and it is highly unlikely that the affected shallow groundwater will be used as a source of drinking water in the foreseeable future. Other designated beneficial uses of the affected shallow groundwater are not threatened, and it is highly unlikely that they will be, considering these factors in the context of the site setting. Remaining petroleum FELICIA MARCUS, CHAIR I THOMAS HOWARD, EXECUTIVE DIRECTOR 1001 1 Street, Sacramento, CA BSB14 1 Melling Address: P,O. BOX 100, Sacramento, Ca 85812-0100 1 www.waterboardo.ca.gov 0 RECYCLED RARER .