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0 <br /> 3-D Model/Remedial Design Report -2- 14 December 1992 <br /> DDRW, Sharpe <br /> 1 . The 3-D model has indicated that only one treatment plant may be needed <br /> rather than two plants. <br /> 2. The 3-D model has proposed an extraction well system that appears to be <br /> more efficient (as acknowledged in Sharpe's October letter) . <br /> 3. DDRW, Tracy should plan to use a 3-D model at the inception of the <br /> Remedial Design. <br /> We look forward to the Remedial Design/Remedial Action where we expect that <br /> Sharpe will continue to make further progress toward the cleanup of the ground <br /> water. If you have any questions, please call me at (916)255-3069. <br /> CAMILLA WILLIAMS <br /> Engineering Geologist <br /> CKW:cw <br /> Enclosure <br /> cc: Mr. Craig MacPhee, U. S. Army Toxic and Hazardous Materials Agency, <br /> Aberdeen Proving Ground, Maryland <br /> CPT Mike Dell 'Orco, U. S. Army Corps of Engineers, Huntsville, Alabama <br /> Mr. Marshall Cloud, Defense Distribution Region West, Tracy, Lathrop <br /> Mr. Richard Seraydarian, U. S. Environmental Protection Agency, Region <br /> IX, San Francisco <br /> Ms. Tracie Billington, Department of Toxic Substances Control , Region 1, <br /> Sacramento <br /> Mr. Fred Kaufman, Public Health Services of San Joaquin County, <br /> Environmental Health Department, Stockton <br />