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STATE OF CALIFORNIA GEORGE DEUKMEJIAN,Governor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD— <br /> CENTRAL VALLEY REGION <br /> 3443 ROUTIER ROAD <br /> SACRAMENTO,CA 95827-3098 <br /> li <br /> DEC 1 1 199 <br /> 7 December 1989 ENVIRONIMENTAL HEALTH <br /> PERM IT/SERVICES <br /> Mr. Brian Garber <br /> Aegis Environmental Consultants <br /> 801 Riverside Avenue, Suite C <br /> -CA- 9.5678— <br /> CALIFORNIA <br /> CALIFORNIA FUELS, 838 EAST MOKELUMNE: STREET, WOODBRIDGE, SAN JOAQUIN COUNTY <br /> We have reviewed the Site Assessment Work Plan for the subject site, dated <br /> 10 November 1989. In general , th.i-s i s`a"good._,proposed work`pl an -and, we <br /> approve of it,:, We have the following comments and recommendations: <br /> 1. Once the local ground water direction is determined additional wells <br /> may have to be' installed to assess the ground water. quality downgradient <br /> from the excavated area. <br /> 2. Well screens should be placed a minimum of 10 feet above 'and 20 feet <br /> below the water table, and the screen lengths should be based on the <br /> local lithology and span the .uppermost water-bearingzone if possible: <br /> 3. Analysis for lead should be included in the soil- and water analyses. <br /> 4. If the wells are developed appropriately, it is not necessary to wait 24 / <br /> hours before collecting ground water samples. <br /> If you have any questions, please call _me at ,(916) 361-5673. <br /> lye <br /> TWILA L. LECLERC <br /> Area Engineer <br /> TLL <br /> cc: /Ms. Eleanor Ratliff, San Joaquin County Public Health Services, Stockton <br />