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Mr. Scott Hooton - 2 - 28 March 2001 <br /> 4. The Investigation Report should include isoconcentration contour maps for detected constituents <br /> in groundwater. <br /> 5. The Third and Fourth Quarter Reports needs to include a comparison of recent data with <br /> historical data. <br /> 6. The vapor recovery line should be shown on figures. <br /> 7. The Third and Fourth Quarter Reports need to discuss groundwater trends, fluctuations, and <br /> gradients compared to historical results. <br /> 8. The field logs state the groundwater was turbid. An evaluation of each monitoring well is to be <br /> performed to determine if redeveloping is needed. <br /> By 20 April 2001,please submit a response to comments above on the Investigation Report, a work plan <br /> to delineate the lateral and vertical extent of groundwater contamination, and a schedule to implement <br /> proposed work. If you have any questions, you may contact me at(916) 255-3119 or <br /> lewisda,rb5 s.swrcb.ca.agov. <br /> —Q Lu-I}-I <br /> DEVRA LEWIS <br /> Environmental Specialist H <br /> cc: Ms. Margaret Lagorio, San Joaquin County Public Health Services, Stockton <br /> Mr. Jeff Goold, Equilon Enterprises, LLC, Seattle <br /> Mr. Khaled Rahman, Cambria Environmental Technology, Inc., Oakland <br />