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San Joaquin County <br /> Department DIRECTOR Environmental Health ®e <br /> ac ;• •� l3 <br /> Donna Heran,REHS <br /> s 1868 East Hazelton Avenue <br /> Q PROGRAM COORDINATORS <br /> { Stockton California 95205-6232 <br /> Robert McClellon,REHS <br /> • .. Jeff Carruesco,REHS,RDI <br /> r. <br /> cq �P Website:www.SJyov.ory/ehd Kasey Foley,REHS <br /> F o R Linda Turkatte,REHS <br /> Phone (209)468-3420 Rodney Estrada,REHS <br /> Fax: (209)464-0138 Adrienne Ellsaesser,REHS <br /> December 2,2013 <br /> Mr. Marvin Katz <br /> Shell Oil Products US <br /> HSE — Environmental Services <br /> 20945 South Wilmington Avenue <br /> Carson, California 90810-1039 <br /> Subject: Interstate Shell <br /> 620 West Charter Way <br /> Stockton, California 95206 <br /> Dear Mr. Katz: <br /> The .San Joaquin County, Environmental Health Department (EHD) has received and <br /> reviewed Case Closure Reuest (report); dated 4.October 2013,. prepared and submitted by <br /> your consulting firm, Conestoga-Rovers & Associates (CRA), on-your behalf for the•above- <br /> referenced site. The report was submitted.,in response to the EHD letters dated 28 <br /> December 2012 and 24 September 2013 in which the EHD had directed the submittal of a <br /> closure,summary report; <br /> In the report, CRA estimated that approximately 4,275 pounds of total' petroleum <br /> hydrocarbons as gasoline (TPH-g) and 10 pounds of benzene remain in soil beneath the <br /> site having removed approximately 1,100 tons of petroleum hydrocarbon impacted soil, 180 <br /> gallons of separate phase hydrocarbons,(SPH)"and more than 17,000 pounds of gasoline <br /> constituents from soil and groundwater by various remedial mefho"ds. Included in the.CRA <br /> report was an evaluation of site conditions in the context of the Low Threat Closure Policy <br /> (LTCP) adopted by the State Water Resources Control Board on 17 August 2012. Based <br /> on the information presented in the report, CRA concluded that this site should be moved to <br /> closure. <br /> The EHD concurs with the closure recommendation presented by CRA and has discussed <br /> this site with the Central Valley Regional Water Quality Control Board (Regional Board). <br /> The EHD is preparing a Case Closure Summary to submit to the Regional Board for closure <br /> notification. The Regionaly Board will have thirty days to respond to the closure <br /> recommendation by the EHD. <br /> As previously stated by electronic mail-dated 22 March 2013 and letter dated 24 September <br /> 2013, the EHD directs that''all monitoring' and sampling at'this site be suspended while the <br /> site is being considered for closure. <br />