Laserfiche WebLink
aDepartment of Toxic Substances Control <br /> Maziar Movassaghi R�lnrrrruuuu�yyyy <br /> Linda eS.t Adams Acting Director n���� V �earzoenegger <br /> Secretary for 8800 Cal Center Drive II�� U(U( v <br /> Environmental Protection <br /> Sacramento, California 95826-3200 <br /> FEB 2 6 2010 <br /> February 11, 2010 ENVIRONMENT HEALTH <br /> PERMIT/SERVICES <br /> Mr. Maurice Benson <br /> Remedial Project Manager <br /> Defense Distribution Depot —Sharpe Site <br /> P.O. Box 960001 <br /> Stockton, California 95296-0320 <br /> .COMMENTS ON THE DRAFT FEDERAL FACILITIES AGREEMENT (FFA) ANNUAL <br /> PROGRESS REPORT FOR DEFENSE DISTRIBUTION DEPOT SAN JOAQUIN. <br /> CALIFORNIA (DDJC), SHARPE SITE, LATHROP, CALIFORNIA <br /> Dear Mr. Benson: <br /> The Department of Toxic Substances Control (DTSC) received the above-mentioned <br /> report on November 30, 2009 submitted by the URS Corporation on behalf of Defense <br /> Enterprises Support San Joaquin California (DESJC). The Annual Report is a primary <br /> document and affords the regulatory agencies a 60-day review period. <br /> The Annual Progress Report summarizes the results from the quarterly sampling events <br /> for fourth quarter 2008 (4Q08), 1 Q09, 2Q09, and 3Q09. The report also provides a <br /> summary of 2009 performance data for the three groundwater treatment systems, <br /> including treated effluent discharge from October 2008 through September 2009. <br /> Specific objectives of the Annual Progress Report are to: update the nature and extent <br /> of contaminant groundwater plumes; review the annual and cumulative effectiveness <br /> and efficiency of the treatment systems; and, recommend potential optimization efforts <br /> to improve remedy efficiency. <br /> DTSC has reviewed the Annual Progress Report and has the following comments: <br /> Comments <br /> 1.) Page 5-33, Table 5.3-1, Proposed Potable Well Sampling Frequencies: The <br /> Annual Progress Report proposes significant reductions in the sampling <br /> frequencies for off-site potable wells. In some cases the sampling frequencies <br /> have been reduced from quarterly to every five years, and in other cases <br />