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No Further Action Request . Section 10 <br /> Former Amencan Forest Products Facility 2/16/2006 <br /> URS Project No 17322736 Page 1-3 <br /> URS prepared the Work Plan, Additional 1,2-DCA Investigation and Well Survey, Former American <br /> Forest Products Fatality to address the SJPHS-EHD comments (URS, 2005c) This report describes the <br /> results of the field activities conducted according to that work plan <br /> 12 PURPOSE AND SCOPE <br /> This report provides data demonstrating limited extent and stability of groundwater contaminants as a <br /> basis for site closure The scope of work included two rounds of in situ groundwater assessment and a <br /> survey of water supply wells within approximately 2,000 feet of the site This report also presents a Tier 1 <br /> environmental screening assessment for residual groundwater constituents <br /> 1.3 REPORT FORMAT <br /> rThis report consists of six sections and two appendices Section 1 summarizes site background <br /> information and states the purpose and scope of this report The scope, procedures, and results of <br /> groundwater assessment conducted during 2005 to define the downgradient extent of the groundwater <br /> contaminant plume are described in Section 2 Plots of concentration-versus-time, which show a declining r <br /> 1,2-DCA trend in all monitoring wells, are presented and discussed in Section 3 An updated well survey <br /> is included in Section 4 The procedures and results of a Tier 1 environmental risk assessment for residual <br /> 1,2-DCA in groundwater are included in Section 5 Site-specific information in support of meeting <br /> California RWQCB requirements for no further action is presented in Section 6 Conclusions and <br /> recommendations, including a formal no-further-action request, are presented in Section 7 References are <br /> included in Section 8 Appendix A includes the SJPHS-EHD comment letter on URS' previous closure <br /> request, and analytical laboratory reports for site assessment work conducted during 2005 are included in <br /> Appendix B <br /> • <br /> E VPrglectslURSWFP12005 DCA Investigation\HP Investigation Report\AFP 2005 Report WP-TE-Rev02 doe <br />