Final Site Information Package for National Remedy Review Board ...

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SITE INFORMATION PACKAGE FOR NATIONAL REMEDY REVIEW BOARD PART A, SUMMARY The estimated total costs (30-year NPV) for the two components of the Preferred Alternative—Remedial Alternative 3+(d) and Remedy Protection Alternative RP-2—are $1,290 million and $33.9 million, respectively. 6. Stakeholder Views and Support USEPA works closely with a wide range of stakeholders, including state, tribal, and local governments and communities, to identify and implement cleanup actions in the Coeur d’Alene Basin. This includes coordination with the Coeur d’Alene Basin Environmental Improvement Project Commission (the Basin Commission), which was established by the Idaho State Legislature under the Basin Environmental Improvement Act (Idaho Administrative Procedures Act [IDAPA] Title 39, Chapter 810). The Basin Commission is composed of federal, state, tribal, and local governmental stakeholders, and its purpose is coordination of cleanup activities, environmental restoration, and related measures in the Basin. USEPA serves as the federal government’s representative to the Basin Commission. USEPA will continue to be responsible for seeing that cleanup actions in the Coeur d’Alene Basin meet the goals and requirements of decision documents and CERCLA. Stakeholder support is based on discussions to date during the development and implementation of the RI/FS for the Coeur d’Alene Basin and the FFS for the Upper Basin, and during multiple workshops. Letters of support for the proposed remedy have been recently provided by key stakeholders and are included in Part B, Section 15 of this Site Information Package. Formal public comment will also be solicited when the Proposed Plan is issued. A-11
1. Site Name, Location, and Brief History The Bunker Hill Mining and Metallurgical Complex Superfund Site (“the Bunker Hill Superfund Site” or “the Site”) was listed on the National Priorities List (NPL) in 1983. The Site was assigned Comprehensive Environmental Response, Compensation, and Liability Information System (CERCLIS) identification number IDD048340921. This section provides background information about the Site’s location, characteristics, and mining history prior to its inclusion on the NPL as a Superfund site. This Site Information Package provides the U.S. Environmental Protection Agency’s (USEPA’s) National Remedy Review Board (NRRB) with information about the Bunker Hill Superfund Site and the Upper Basin of the Coeur d’Alene River. The intent of this information is to assist the Board in making advisory recommendations regarding the remedy alternatives described and evaluated in the Draft Focused Feasibility Study Report for the Upper Basin of the Coeur d’Alene River (USEPA, 2010, hereinafter referred to as “the FFS Report”), and USEPA Region 10’s Preferred Alternative that is identified in this Site Information Package. This Site Information Package is presented in two parts. Part A summarized information about the Bunker Hill Superfund Site and the Upper Basin of the Coeur d’Alene River; human health and ecological risks; the remediation goals for the Upper Basin; the evaluated remedy alternatives and USEPA Region 10’s Preferred Alternative; and stakeholder views and support. Part B will provide more detailed information about these topics. Figures, tables, and a Supplemental Compact Disk (CD) are provided following Part B, Section 16. 1.1 Location The Bunker Hill Superfund Site lies within the Coeur d’Alene River Basin. The entire Coeur d’Alene River Basin includes the Upper Basin (which comprises areas surrounding the South Fork of the Coeur d’Alene River [SFCDR] and the North Fork of the Coeur d’Alene River); the Lower Basin; Coeur d’Alene Lake; and a portion of the Spokane River where Coeur d’Alene Lake drains into Washington State. For the purposes of this NRRB Site Information Package, the FFS Report (USEPA, 2010), and the forthcoming Record of Decision (ROD) Amendment for the Upper Basin, the portion of the Bunker Hill Superfund Site addressed is the SFCDR portion of the Upper Basin. This is the area of historical mining and industrial activities that is the primary source of downstream metals contamination. The North Fork portion is not included because it has been relatively unaffected by mining activities and is being addressed under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) by other (non-USEPA) agencies, primarily the U.S. Forest Service. In the remainder of this Site Information Package, “the Upper Basin” refers solely to the area surrounding the SFCDR. The Upper Basin occupies approximately 300 square miles of land surface in the Panhandle of northern Idaho (Figure A-1). The area includes the SFCDR and tributaries downstream to the confluence of the South and North Forks of the river. The area addressed by this Site B1-1
Page 1 and 2: United States Environmental Protect
Page 3 and 4: Contents Acronyms and Abbreviations
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Page 11 and 12: RAO remedial action objective RI/FS
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SITE INFORMATION PACKAGE FOR NATION
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12. Potential Applicable or Relevan
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COMMISSIONERS: PFfifiY WHITF CLERK
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Dan Opalski, U.S. EPA March 10,2010
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Dan Opalski, U.S. EPA March 10, 201
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Dan Opalski, U.S. EPA March 10,2010
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Rose Lake ll n e §¨¦ 90 DUDLEY "
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1992-1994 Removal of tailings and c
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The box plot shows the median or 50
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! ( ! ! ( ! ! ! Upper Basin Coeur d
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DUDLEY ") §¨¦ 90 ") St Joe River
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Base Map Data: NHDPlus (Rivers, Wat
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[Two Updated Updated Woodland Ecolo
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Ninemile Creek WALLACE BUNN Upper B
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OSBURN §¨¦ 90 Upper Basin Coeur
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176 E Upper Basin Coeur d'Alene Riv
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§¨¦ 90 ENAVILLE The Bunker Hill
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E 169 §¨¦ 90 Upper Basin Coeur d
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TABLE B2-1 Summary of Ongoing Data
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TABLE B4-2 Screening Level Exceedan
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TABLE B7-1 Preliminary Remediation
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TABLE B8-1 Descriptions of Typical
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TABLE B8-2 Summary of Alternatives
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TABLE B9-1a Comparative Analysis of
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TABLE B9-1b Comparative Analysis of
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TABLE B11-1 Legend of Bureau of Lan
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TABLE B11-1 Legend of Bureau of Lan
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TABLE B11-2 Summary of Estimated Po
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TABLE B11-4 Summary of Remedy Prote
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TABLE B14-1 Estimated Costs Summari
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TABLE B14-2 Summary of Estimated Co
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TABLE B14-2 Summary of Estimated Co
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