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Third Quarter 1991 Report -2- 24 January 1992 <br /> DDRW, Sharpe Site <br /> always the same (for example, the MW-438 cluster) . These differences could have <br /> affected the ground water elevations and configurations of the plumes. <br /> Therefore, we request that explanations and supporting data be provided for the <br /> differences between the quarterly reports. More information on data gaps, <br /> software and data verification are needed to help explain anomalies or changes <br /> in the ground water elevations and plume configurations. We request that future <br /> quarterly monitoring reports provide this information. A letter report will be <br /> acceptable. <br /> Ifyouhave any questions, please call me at (916)361-5670. <br /> `1�0/YvLGlilid/�26�L��%UYYLf� <br /> CAMILLA WILLIAMS <br /> Engineering Geologist <br /> CKW:cw <br /> cc: Mr. Richard Seraydarian, U. S. Environmental Protection Agency, Region IX, <br /> 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 /> Mr. Craig MacPhee, U. S. Army Toxic and Hazardous Materials Agency, <br /> Aberdeen Proving Ground, Maryland <br />