Phase III Remedial Action Plan (RAP)
The Phase II Comprehensive Site Assessment (CSA) was completed and approved by the Massachusetts Department of Environmental Protection (MassDEP) on August 16, 2006. This Revised Phase III Identification, Evaluation and Selection of Comprehensive Remedial Action Alternatives (Phase III, 310 Code of Massachusetts Regulations (CMR) 40.0850) (hereafter referred to as the Remedial Action Plan (RAP)) is being performed in accordance with the Massachusetts Contingency Plan (MCP) to develop and evaluate comprehensive remedial action alternatives for the Fireworks Site (the Site). An initial Phase III RAP was submitted to the MassDEP on November 12, 2007 and was presented to the Site stakeholders at a public meeting held at the Hanover Town Hall on February 27, 2007 (TtEC, 2007). This Revised Phase III RAP incorporates new sampling and field investigation results collected in the Fall of 2008 and in February of 2009. These Phase III supplemental sampling activities were described and reported in the Phase III Supplemental Data Report (TtEC, 2009). The Phase III evaluation activities for the Site included the following:
- Development of Site-wide and area-specific remedial objectives (ROs);
- Development of Site-wide risk-based preliminary remediation goals (PRGs) designed to eliminate or reduce the significant potential human health and environmental risks identified during the CSA;
- Development of remedial action alternatives for the clean-up of the contaminated media at the Site (i.e., sediment, soil, and groundwater);
- Selection of a recommended remedial alternative for the Site; and
- Preparation of the RAP.
Phase III RAP
Phase III RAP Tables
- Table 1 Listing of Soil and Groundwater UCL Exceedances
- Table 1-2 Summary of the Phase II CSA Risk Characterization
- Table 4-1 Site-Specific Soil PRGs and Benchmark Values for Comparison [Reported from the Phase II CSA Report]
- Table 4-2 Site-Specific Sediment PRGs and Benchmark Values for Comparison
- Table 5-1 Fireworks Site Soil – Initial Screening of Remedial Technologies
- Table 5-8 Assembled Soil Alternatives Summary Table
- Table 6-1 Fireworks Site Groundwater – Initial Screening of Remedial Technologies
- Table 7-1 Fireworks Site Sediment – Initial Screening of Remedial Technologies
- Table 7-2 Sediment Alternatives for the Eastern Channel Corridor, Lower Drinkwater River Corridor, Lily/Upper Factory Pond and the Middle/Lower Factory Pond Fireworks Site
- Table 7-3 Sediment Alternatives for the Marsh Upland Sediment Area
- Table 8-1 Retained Soil, Groundwater and Sediment Alternatives for Assembly into the Site-Wide Alternatives
- Table 8-2 Assembled Site-Wide Alternatives
- Table 8-3 Summary of Detailed Evaluation of Site-Wide Alternatives
- Table 8-4 Regulatory Requirements Summary (Preliminary)
- Table 8-5 Results of the Comparative Rankings of Site-Wide Alternatives Relative to the Detailed Evaluation Criteria
- Table 8-6 Comparison of SWA 4-1 and SWA 4-2
Phase III RAP Figures
- Figure 1-1 Site Map and Risk Characterization Area
- Figure 1-2 Soil and Groundwater - UCL Exceedance Locations
- Figure 2-1 Fireworks Site Phase III Flowchart
- Figure 5-1 Upper North Area (UNA) Soil Alternative UNA-2
- Figure 5-2 Upper North Area (UNA) Soil Alternative UNA-3
- Figure 5-3 Potential Greenway Area (PGA) Soil Alternative PGA-2
- Figure 5-4 Potential Greenway Area (PGA) Soil Alternative PGA-3
- Figure 5-5 Potential Greenway Area (PGA) Soil Alternative PGA-4
- Figure 5-6 Southern Disposal Area (SDA) Soil Alternative SDA-2
- Figure 5-7 Southern Disposal Area (SDA) Soil Alternative SDA-3
- Figure 5-8 Southern Disposal Area (SDA) Soil Alternative SDA-4
- Figure 5-9 Southern Disposal Area (SDA) Soil Alternative SDA-5
- Figure 5-10 Southern Conservation Commission Area (SCCA) Soil Alternative SCCA-2
- Figure 5-11 Southern Conservation Commission Area (SCCA) Soil Alternative SCCA-3
- Figure 5-12 Southern Conservation Commission Area (SCCA) Soil Alternative SCCA-4
- Figure 5-13 Southern Conservation Commission Area (SCCA) Soil Alternative SCCA-5
- Figure 5-14 Marsh Upland Area (MUA) Soil Alternative MUA-2
- Figure 5-15 Marsh Upland Area (MUA) Soil Alternative MUA-3
- Figure 5-16 Marsh Upland Area (MUA) Soil Alternative MUA-4
- Figure 5-17 Marsh Upland Area (MUA) Soil Alternative MUA-5
- Figure 5-18 Cold Waste Area (CWA) Soil Alternative CWA-2
- Figure 5-19 Cold Waste Area (CWA) Soil Alternative CWA-3
- Figure 6-1 Southern Disposal Area (SDA) Groundwater Alternative SDGW-3
- Figure 6-2 Southern Disposal Area (SDA) Groundwater Alternative SDGW-4
- Figure 6-3 Marsh Upland Area (MUA) Groundwater Alternative MUGW-3
- Figure 6-4 Marsh Upland Area (MUA) Groundwater Alternative MUGW-4
- Figure 7-1 Sediment Alternative 3
- Figure 7-2 Sediment Alternative 4
- Figure 7-3 Sediment Alternative 5
- Figure 7-4 Sediment Alternative 6
- Figure 7-5 Marsh Upland Area (MUA) Sediment Alternative 2
- Figure 7-6 Marsh Upland Area (MUA) Sediment Alternative 3
- Figure 7-7 Marsh Upland Area (MUA) Sediment Alternative 4
- Figure 8-1 Site-Wide Alternative 1
- Figure 8-2 Site-Wide Alternative 2
- Figure 8-3 Site-Wide Alternative 3
- Figure 8-4a Site-Wide Alternative 4-1
- Figure 8-4b Site-Wide Alternative 4-2
- Figure 8-4c Site-Wide Alternative 4-3
- Figure 8-5 Site-Wide Alternative 5
Phase III RAP Appendix A
- Appendix A Table of Contents
- Table A2-1 Regression Equations Used in the Development of PRGs for Biota and Sediments
- Table A2-2 ERC Summary of Benthic Macroinvertebrate Endpoints and Weight of Evidence for Aquatic and Wetland Habitats Present
- Table A2-3 ERC Summary of COCs determined for Benthic Macroinvertebrates and Associated PRGs
- Table A1-2 to A1-4
- Table A1-2 SUMMARY OF SITE-SPECIFIC PRGs FOR SOIL (0-3 ft bgs) - RECREATIONAL USE
- Table A1-3 SUMMARY OF SITE-SPECIFIC PRGs FOR SOIL (0-6 ft bgs) - COMMERCIAL/INDUSTRIAL USE
- Table A1-4 SUMMARY OF SITE-SPECIFIC PRELIMINARY PRGs FOR ACCESSIBLE SEDIMENT - RECREATIONAL USE
- Table A2-4 to A2-8
- Table A2-4 Calculated PRGs for Sediments and Semi-Aquatic Wildlife
- Table A2-5 Calculated PRGs for Terrestrial and Wildlife Receptors (Short-tailed Shrew and American Woodcock)
- Table A2-6 Proposed PRGs for Soil Invertebrates and Terrestrial Plants
- Table A2-7 Summary of Sediment PRGs by Environmental COC and Assessment Endpoint
- Table A2-8 Proposed Surface Soil PRGs by Receptor
Phase III RAP Appendix B
- Appendix B-3 Proposed Site Configuration for Site Access and Material Handling Areas
- Appendix B-4 UPPER NORTH AREA
- Appendix B-1 Basis of Estimate: Background and Description of Alternatives
- Appendix B-2 Basis of Estimate: Area-Specific Operations and Quantities
- Appendix B-4 SOIL AND SEDIMENT REMOVAL QUANTITIES
- Appendix B-5 SITE-WIDE ALTERNATIVE 2