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308 North Grant Street <br /> Page 2 <br /> 4. Summary tables of chemical concentrations in the two media of concern; <br /> 5. Rose diagram showing groundwater flow directions that influence the plume of <br /> impacted groundwater; <br /> 6. Dissolved and adsorbed contamination mass estimates, including assumptions and <br /> calculations; <br /> 7. All boring and well logs (including construction/screening). <br /> Prepare a work plan for an additional investigation to assess and delineate impacted <br /> groundwater, and to delineate the vertical and lateral definition of sorbed contaminants at <br /> this site. The work plan should be prepared in the context of a current SCM. Submit this <br /> work plan and SCM by 13 June 2003. <br /> It is not necessary to analyze the quarterly groundwater samples by Environmental <br /> Protection Agent(EPA) SW-846 method 8021 because these sample compounds are <br /> reported by EPA SW-846 method 8260B. Please report all detected results found during <br /> the analysis of quarterly groundwater samples by EPA SW-846 method 8260B in a tablext <br /> format. <br /> EHD has not received a complete well survey report of domestic, municipal, industrial lye <br /> and other wells within a 2,000-foot radius of this site. Contact the Department of Water <br /> Resources,municipal water suppliers, and nearby industries for well information. <br /> Perform a physical search of the area to identify all wells. Show the location of all wells <br /> on a map,relative to the location of the subject site. Submit any known construction <br /> details of the wells, and identify all sources of information in the well survey report. <br /> Submit this report by 23 May 2003. C&'A1\� <br /> �y ,1r <br /> Please continue the quarterly groundwater monitoring and submit the reports to EHD ,°{ X <br /> within thirty days of each monitoring event. If you have any questions,please contact <br /> Vicki McCartney at(209)468-3456. <br /> Donna Heran, REHS, Director <br /> Environmental Health Department <br /> Vicki McCartney, EHS Nuel C. Henderson,Jr.,RG <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> cc: Daniel W. Kalmbach, AGE <br /> James L.L. Barton, CVRWQCB <br />