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ENVIRONMENTAL HEALTH <br /> $_ EPARTMENT <br /> SAN JOAQUIN COUNTY <br /> _ Unit Supervisors <br /> a ,�,, ,•. .,, Donna K.Reran,R.E.H.S. 304 East Weber Avenue, Third Floor Carl Borgman,R.E.H.S. <br /> Director Mike Huggins,REM.S..R.D.I. <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> .. P • Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> q i F o Laurie A.Cotulla,R.E.H.S. Robert McClellon,R.E.H.S. <br /> Program Manager Fax- (209) 464-013 g Mark Barcellos,R.E.H.S. f <br /> r <br /> i <br /> I <br /> i <br /> < EXECUTIVE OFFICER '.JUL 2.9 2004 iI <br /> CENTRAL VALLEY REGIONAL i <br /> WATER QUALITY CONTROL BOARD <br /> 11020 SUN CENTER DRIVE #200 ! <br /> R.ANCHO' CORDOVA CA 95670 ! <br /> SITE CODE: 505329 <br /> RE: Tracy Cold Storage <br /> 24500 MacArthur Drive <br /> Tracy, CA <br /> In December 1999 our agency requested concurrence from your agency on our determination that . <br /> the site investigation and remedial action of contamination resulting from an unauthorized release <br /> from the underground storage tank formerly located at the above referenced site had been <br /> completed. <br /> In February 2000 your agency wrote a letter of"Nonconcurrence"with our determination of"No <br /> Further Action Required". It was required that the oldest production well (South Well) on site be,, <br /> demonstrated to not be a conduit for contamination to reach the lower aquifer. <br /> In March 2004, a new production well was installed per current well standards and the monitoring <br /> wells were sampled. In May 2004 the"South Well"was destroyed by explosion and filling with <br /> cement grout. Analytical results from the March 2004 monitoring well samples show a significant <br /> i reduction of contaminants in the groundwater. <br /> Enclosed is an updated "Case Closure Summary" and chronology for this site. According to our. <br /> Local Oversight Program contract with the State Water Resources Control Board the"Case <br /> Closure Summary" is to be forwarded to you. If our agency has not received written <br /> correspondence from you, detailing problems with closure of this site, within 30 days of your <br /> receipt of this letter, our agency will request destruction of the monitoring wells. Environmental <br /> Health Department will mail the responsible party a"Case Closure Letter' ("No Further Action <br /> Letter")when all our requirements have been met. <br /> If you have any questions, please contact Margaret Lagorio at (209)468-3449." <br /> Donna Heran, REHS, Director <br /> Environmental Health Department <br /> Margaret L gorio, Supervis g REHS <br /> LOP Unit <br /> Enclosure , <br /> cc: CVRWQCB—Jim Barton <br /> Responsible Party(ies): <br /> cc: Tracy Cold Storage <br /> s <br /> l <br /> i <br />