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IA EDMUND G.BROWN JR <br /> •' '- GOVERNOR <br /> D A L I I O R M I• MC ET.",FO <br /> WaterBoards ENN RGNMEN'A RROTE'TCN <br /> State Water Resources Control Board <br /> REVIEW SUMMARY REPORT—ADDITIONAL WORK <br /> SIXTH REVIEW- JANUARY 2015 <br /> Agency Information <br /> Agency Name: San Joaquin County Address: 1868 East Hazelton Avenue <br /> Environmental Health Stockton, CA 95205 <br /> Department Count <br /> Agency Caseworker: Vicki McCartney Case No.: 1065 <br /> Case Information <br /> USTCF Claim No.: 8542 GeoTracker Global ID: T0607700323 <br /> Site Name: West Clay Properties Site Address: 639 West Clay Street <br /> Stockton, CA 95206 <br /> Responsible Party 1: Dan 8t Greg Silva Address: 639 West Clay Street <br /> West Clay Properties Stockton, CA 95206 <br /> Responsible Party 2: Steve Azevedo Address: P.O. Box 6009 <br /> West Clay Properties/ Stockton, CA 95206 <br /> Knife River Corporation <br /> USTCF Expenditures to Date: $757,487 Number of Years Case Open: 24 <br /> To view all public documents for this case available on GeoTracker use the following URL: <br /> hftp://geotracker.waterboards.ca.gov/profile report.asp?global id=T0607700323 <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 Site is an active commercial petroleum fueling facility. An unauthorized release was <br /> reported in May 1989 following a failed tank tightness test. One 1,000-gallon gasoline UST was <br /> removed in May 1990. Two gasoline USTs (10,000-gallon and 6,000-gallon)were removed in <br /> December 1998. Approximately 340 cubic yards of impacted soil was excavated to a depth of <br /> 15 feet and disposed offsite in December 2003. Ozone sparging has been conducted since <br /> November 2007. No additional soil remediation has been conducted onsite. Since 1998, 34 <br /> groundwater monitoring wells have been installed and regularly monitored. According to <br /> groundwater data, water quality objectives have not been achieved for the chemicals of <br /> concern. <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 Site. No other water supply wells have been identified within 1,000 feet of the <br /> Site in files reviewed. The unauthorized release is located within the service area of a public <br /> water system, as defined in the Policy. The affected shallow groundwater is not currently being <br /> used as a source of drinking water, and it is highly unlikely that the affected shallow <br /> FELICIA MARCUS, CHAIR I THOMAS HOWARD, EXECUTIVE DIRECTOR <br /> 1001 1 Street.Sacramento,CA 95814 1 Mailing Address P 0 Box 100 Sacramento.Ca 95812-0100 1 www waterboards ca gov <br />