SITE INFORMATION AND CORRESPONDENCE

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I II RC2ional RecommendationI'a e 21 of'')4 Appendix A 9. Provide tabulated results of all groundwater 6.6 NEAR Documentation elevations and depths to water. I'he purpose for a NEAR request report is to 10. Provide tabulated results of all sample provide a document upon which the regulator may analyses. including the sa1111)l.ing method. make an objective decision regarding the and detection limits. Analytical results requested closure. At a minimum. the NEAR mush include TPFI and '13TEX constituents. request must include the information outlined lead. M1Bl__:Et13E. TBA. 1=1-13F. DIPE-. below. Responsible paries are to provide a one TAME, ethanol, methanol; ethyiene or two sentence narrative summar-v for each - dibromide. l.'_-dichloroethane and other numbered item below. and list the section number constituents.as indicated in Table ==2 above. where supporting information can be found in the Provide an_v WET'or TCLP results. NI AR request. Additional information submitted. such as fate and transport modeling. must include I l. Discuss concentration and mass changes the assumptions and variables used. The NFAR over time. and current concentrations of request must include signatures of registered contaminants remaining in groundwater at professionals as required by llie California the site. Business and Profession's Code. 12. Provide isoconcentration contour maps of I. Site history and current site conditions. contaminants of concern to define the 'lateral and vertical extent of contaminants 2. Site geology and livdrog>eoloay. remaining in soil-and groundwater. The contour maps should present an estimated Sensitive potential receptors inCludinp) "zero line` of contaminant concentrations \a.ater supply wells and surface water. both on-site and oft-site. -I. 1?rovicle a map showing the location of all 13. Provide a summary of the remedial water supply wells used for municipal. method(s) used to clean up the site. Include domestic, agriculture, industrial and otherthe calculated zone of influence: uses within 2.000 feet of the site. Provide assumptions used to design the remedial well details and distances in a table. s\.stem(s). and the duration of'remedial activities. �. Provide scaled site maps of-the area impacted showing locations of former and 14. Provide a discussion of whether existing tank systems.excavation and background is unattainable using best sample locations: boring and monitoring available remediation method(s). well locations. groundwater.elevation contours. subsurface utilities, buildings. 15. Provide a discussion (and estimate) of streets. and am; nearby surface waters. contaminant mass remaining in soil and groundwater versus contaminant mass 6. Provide boring logs`and cross-sections to removed or destroved by soil excavation or show site lithologv• remedial actions. . Report the v olume of excavated soil 16. Provide assumptions, parameters. disposed off-site. or remaining on-site. calculations and the model used in ani risk ,assessments. S. Describe the fate of any retraining monitoring and remediation wells 17. Provide assumptions- parameters. (destroyed. ownership transferred. or to calculations and the model used in fete and remain in use). transport modeling.