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r <br /> Depart' int of Toxic Substances untrol <br /> Edwin F. Lowry, Director <br /> 8800 Cal Center Drive Gray Davis <br /> Winston H. Hickox Sacramento, California 95826-3200 Go mor <br /> Agency Secretary <br /> California Environmental <br /> Protection Agency <br /> une 28, 2002 <br /> Mr. John Guzman <br /> Defense Logistics Agency <br /> Defense Distribution Depot San Joaquin, Sharpe Site <br /> Post Office Box 960001 <br /> Stockton, California 95296-0250 <br /> CONCURRENCE ON SHUTTING OFF DDJC-SHARPE EXTRACTION WELLS <br /> and EWC FOR A PERIOD OF SIXTY DAYS EFFECTIVE JUN EEW 62 <br /> 26, 2002 <br /> Dear Mr. Guzman: <br /> The Department of Toxic Substances Control (DTSC) received both your e-mail and <br /> follow-up letter dated June 21, 2002 requesting the shutting off of the above mentioned <br /> extraction wells for a period of sixty days. <br /> DTSC agrees that the extraction wells were part of the wells recommended for <br /> shutdown in the remedial process optimization evaluation performed by Parsons <br /> Engineering. The shutoff selection for these wells was based on the insignificant <br /> extraction volumes and mass removal rates. Shutting off these wells will help to ensure <br /> that Defense Distribution Depot San Joaquin (DDJC) will not exceed the National <br /> Pollutant Discharge Elimination System average discharge limit of 1.152 million gallons <br /> per day. <br /> DTSC concurs <br /> of sixty days <br /> August 26, 20021tAfter thth is lwellsg off the ten extraction date, DTSC will concl dewhether it i is ending <br /> appropriate to <br /> permanently shutdown these wells. <br /> If you have any questions regarding this letter, please contact me at (916) 255-3713. <br /> Sincerely, � / <br /> Peter MacNicholl <br /> Remedial Project Manager <br /> Office of Military Facilities <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at www.dtsc.ca.g0v. <br /> ® Printed on Recycled Paper <br />