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EoNUxo G.BeowN Ja. <br /> 00� Q -°vEexox <br /> auooaxu <br /> MNnxew Rconlouez <br /> Water Boards <br /> RONNENII.I PROtERgX <br /> State Water Resources Control Board <br /> DRAFT <br /> REVIEW SUMMARY REPORT—ADDITIONAL WORK <br /> FIFTH REVIEW—SEPTEMBER 2014 <br /> Agency Information <br /> Agency Name: San Joaquin County Address: 1868 East Hazelton Avenue <br /> Environmental Health Stockton, CA 9520 <br /> Department Count <br /> Agency Caseworker: Angelica Sandoval Marin Case No.: 1669 <br /> Case Information <br /> USTCF Claim No.: 6098 GeoTracker Global ID: T0607700064 <br /> Site Name: USA#110 Site Address: 2132 East Mariposa Road <br /> Stockton, CA 95205 <br /> Responsible Party: USA Petroleum Address: 520 Broadway <br /> Santa Monica, CA 90406 <br /> USTCF Expenditures to Date: $506,691 Number of Years Case Open: 27 <br /> To view all public documents for this case available on GeoTracker use the following URL: <br /> http:/Igeotrac ker.waterboards.ca.gov/profile_report.asp?global_id=TO607700064 <br /> Summary <br /> The Low-Threat Underground Storage Tank (UST) Case Closure Policy (Policy) contains <br /> general and media-specific criteria, and cases that meet those criteria are appropriate for <br /> closure pursuant to the Policy. This case does not meet all of the required criteria of the Policy. <br /> Highlights of the case follow: <br /> This case is an active commercial petroleum fueling facility. An unauthorized release was <br /> reported in March 1987. A soil vapor extraction pilot test was conducted in 1992. In January <br /> 2012, a soil vapor extraction and air sparging pilot test was conducted, which removed 324 <br /> pounds of total petroleum hydrocarbons as gasoline (TPHg). A five-day high vacuum dual <br /> phase extraction pilot test was proposed in October 2013. Since 1987, 22 groundwater <br /> monitoring wells have been installed and monitored; four wells have been abandoned. <br /> According to groundwater data, water quality objectives have been achieved or nearly achieved <br /> for all constituents except in source area well S-1. <br /> The petroleum release is limited to the soil and shallow groundwater. According to data <br /> available in GeoTracker, there are no public water supply wells or surface water bodies within <br /> 1,000 feet of the projected plume boundary. No other water supply wells have been identified <br /> within 1,000 feet of the projected plume boundary in files reviewed. The unauthorized release is <br /> located within the service area of a public water system, as defined in the Policy. The affected <br /> shallow groundwater is not currently being used as a source of drinking water, and it is highly <br /> unlikely that the affected shallow groundwater will be used as a source of drinking water in the <br /> foreseeable future. Other designated beneficial uses of impacted groundwater are not <br /> threatened, and it is highly unlikely that they will be, considering these factors in the context of <br /> the site setting. <br /> FELICIA MARCUS, CHAIR I THOMAS HOWARD,EXECUTIVE DIRECTOR <br /> 1001 I Street,Sacramento,CA 95814 I Melling Address:P.O.Box 100,Sacramento Ce 85812.0100 1 www.waterboarde ca,gov <br /> a RGCVC Eo v V2A <br />