CERCLA Cleanup Projects

The Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) process assesses site conditions, evaluates hazards to humans and the natural environment, determines the level of cleanup required and selects an appropriate cleanup alternative.

Projects on this list have been or currently are being investigated for potential human health and environmental impacts. Various stages are represented, including Investigation (Abbreviated Preliminary Assessment, Site Inspection), Alternative Evaluation (Risk Assessment, Engineering Evaluation/Cost Analysis) and Cleanup (Removal Action). Progression through the stages depends on findings and recommendations from the preceding stage. Each project contains all available documents.

Administrative Record Files

Azurite Mine

• Minerals & Geology - Azurite Mine [Okanogan-Wenatchee NF website]
  Project located on MBS, managed by Okanogan-Wenatchee NF
• 2008 Azurite Engineering Evaluation/Cost Analysis [PDF, 142 pages, 632 kb]
• Azurite Removal Action Memorandum [PDF, 16 pages, 240 kb]
• 2011 Azurite RA Monitoring Report [PDF, 17 pages, 741 kb]
• 2011 Azurite OM Plan [PDF, 18 pages, 6 MB]
• 2012 Azurite RA Monitoring Report [PDF, 17 pages, 905 kb]
• 2013 Final Azurite Mine Removal Action Report [PDF, 266 pages, 34 MB]
• 2014 Azurite RA Monitoring Report [PDF, 149 pages, 3 MB]

Kromona Mine and Millsite

• 1994-09-14 Kromona AIM datasheet--Moore [PDF, 3 pages, 215 kb]
• 2003-08-20 Kromona APA--Boles [PDF, 18 pages, 760 kb]
• 2005-12 Kromona SI report--CES [PDF, 75 pages, 7.6 MB]
• 2006-04 Kromona SRA--CES [PDF, 55 pages, 2.7 MB]
• 2007-03-12 Kromona ICIM--Sowa [PDF, 4 pages, 203 kb]
• 2009-11-24 Kromona EECA--MSE [pdf, 114 pages, 8.8 MB]
• 2010-04-10 Kromona CRP [PDF, 62 pages, 6 MB]
• 2010-04-13 Project Update -- Iwamoto [pdf, 2 pages, 24 kb]
• 2010-07-15 Kromona EECA Errata #1 [pdf, 1 page, 16 kb]

Monte Cristo Mining Area (MCMA)

Letters to the forest

Monte Cristo quick facts [PDF, 1 page 85 kb]

• MCMA Final Long Term Monitoring Report for 2019 [PDF, 25 pages, 7.9 MB]
• MCMA Final Long Term Monitoring Report for 2018 [PDF, 32 pages, 12.6 MB] 
• MCMA Final Long Term Monitoring Report for 2017 [PDF, 372 pages, 27.5 MB]
• MCMA Final Long Term Monitoring Report for 2016 [PDF, 510 pages, 56.7 MB]
  • MCMA Final 2016 Long Term Monitoring Report - Appendix A [PDF, 412 pages, 16.8 MB]
  • MCMA Final 2016 Long Term Monitoring Report - Appendix B [PDF, 30 pages, 10.6 MB]
  • MCMA Final 2016 Long Term Monitoring Report - Appendix C [PDF, 24 pages, 9.2 MB]
  • MCMA Final 2016 Long Term Monitoring Report - Appendix D [PDF, 5 pages, 1.4 MB]
  • MCMA Final 2016 Long Term Monitoring Report – Figures [PDF, 6 pages, 18.4 MB]
  • MCMA Final 2016 Long Term Monitoring Report – Text and Tables [PDF, 32 pages, 297.7 kb]
• MCMA Biological Monitoring Report for 2016 [PDF 18 pages, 3 MB]
  • Monte Cristo Removal Action Report Appendix A AAs Builts [PDF, 24 pages, 8.3 MB]
  • Monte Cristo Removal Action Report Appendix B Photos [PDF, 78 pages, 6 MB]
  • Monte Cristo Removal Action Report Appendix C Bio Monitoring [PDF, 53 pages, 2.3 MB]
  • Monte Cristo Removal Action Report Appendix D ICP [PDF,3 pages, 83 kb]
• MCMA Final Removal Action Report [PDF, 486 pages, 37 MB]
• MCMA Removal Action Cultural Resources Monitoring Report [PDF, 426 pages, 78.3 MB]
• MCMA Biological Monitoring Report for 2015 [PDF 52 pages, 5.40 MB]
• 2015 Monte Cristo Biological Opinion from USFWS  [PDF 18 pages, 291 kb]
• 2015 Monte Cristo Site Closure Map [PDF 1 page, 352 kb]
• 2015 Explanation of Significant Differences [PDF 14 pages, 314 kb]
  • Response to ESD Comments - Lider Engineering [PDF 20 pages, 638kb]
  • Response to ESD Comments - Pilchuck Audubon Society [PDF 5 pages, 282kb]
  • Response to ESD Comments - Sierra Club [PDF 4 pages, 280kb]
• 2015 Removal Action Design and Workplans [PDF 37 pages, 6.27 MB]
• 2015 Removal Action Drawings [PDF 20 pages, 9.63MB]
• 2015 Removal Action Appendices [PDF 74 pages, 6.72]
• 2015 Technical Specifications and Construction Quality Assurance Plan [PDF 151 pages, 3.79MB]
• Monte Cristo Access-Log Stringer Bridges Signed Drawings [ PDF 7 pages, 28 MB]
• 2013 Monte Cristo Mining Area Access Route Workplan [PDF 229 pages, 24 MB]
• Access Route Log Stringer Bridge Design Submittal May 2013 [PDF 36 pages, 4 MB]
• Letter Request to Reinitiate Formal Consultation USFWS
• 2012 Annual Aquatic Monitoring Reports  [PDF, 252 pages, 7.2 MB]
• 2011 Annual Aquatic Monitoring Reports  [PDF, 253 pages, 6.2 MB]
• Monte Cristo 2013 Townsite Survey [PDF 5MB]
• Signed removal action memorandum [PDF, 44 pages, 1.9 MB]
• Monte Cristo CERCLA BA Final w Figures [PDF, 40 pages, 115 MB]
• USFWS Biological Opinion [PDF, 213 pages, 150 MB]
• 2012 MCMA Draft Mine Drainage Treatment Options Technical Memorandum [PDF, 21 pages, 1.05 MB]
• 2011 MCMA 3D Model Selected Mine Workings Technical Memorandum [PDF, 35 pages, 8 MB]
• 2011 MCMA Geology & Veins Technical Memorandum [PDF, 20 pages, 13.2 MB]
• 2010 MCMA Humidity Cell Test Technical Memorandum [PDF, 170 pages, 3.75 MB]
• 2010 MCMA County Road Evaluation Technical Memorandum [PDF, 16 pages, 1.2 MB]
• 2010 MCMA Creek Crossing Minimum Sizing Technical Memorandum [PDF, 39 pages, 4.29 MB]
• 2010-02-22 MCMA CRP -- Iwamoto [pdf, 57 pages, 179 kb]
• 2010-06-14 MCMA EE/CA Errata #1 [pdf, 1 page, 18 kb]
• 2010-06-15 MCMA EE/CA Errata #2 [pdf, 1 page, 7 kb]
• 2010-06-15 MCMA EE/CA Errata #3 [pdf, 1 page, 7 kb]
• 2010-04-13 Project Update -- Iwamoto [pdf, 2 pages, 24 kb]
• 2010-04 MCMA EECA -- CES [complete, pdf, 297 pages, 38 MB]
  • Body of Report [pdf, 102 pages, 1 MB]
  • Tables [pdf, 35 pages, 417 kb]
  • Plates [pdf, 4 pages, 16 MB]
  • Figures [pdf, 16 pages, 2 MB]
  • Appendix A [pdf, 13 pages, 3 MB]
  • Appendix B [pdf, 13 pages, 96 kb]
  • Appendix C [pdf, 102 pages, 8 MB]
  • Appendix D [pdf, 11 pages, 105 kb]
• 2009-09-28 EECA Public Presentation--CES [pdf, 45 pages, 2.87 MB]
• 2008-01-09 MCMA SI report--CES [PDF, 108 pages, 11.32 MB]
• 2006-09 APA--POW_ND_POM mines--Graham [PDF, 73 pages, 4.1 MB]
• 2006-09 APA--Sidney Mine--Graham [PDF, 49 pages, 3.25 MB]
• 2004-03 Monte Cristo Concentrator bndry survey--Shumaker [PDF, 1 page, 167 kb]
• 2004-01 Monte Cristo Mine Area Site Hazard Assessment--WDOE [PDF, 21 pages, 2.1 MB]
• 2003-04 IAM Lands--Mystery and Justice Mines--WDGR [PDF, 22 pages, 8.46 MB]
• 2003-02 APA--Mystery Mine--Boles [PDF, 15 pages, 621 kb]
• 2002-10 APA--Monte Cristo Concentrator--Boles [PDF, 13 pages, 389 kb]
• 2002-06 Second screening investigation--WDOE [PDF, 131 pages, 1.82 MB]
• 1994-07 Monte Cristo AIM datasheets--Ferber [PDF, 6 pages, 51 kb]
• Summary Report of the Engineering Evaluation / Cost Analysis(EECA) [PDF, 11 pages, 1.58 MB]
• Update -- Public Meeting Announcement: MCMA Cleanup Alternatives, September 28, 2009 [PDF, 1 page, 482 kb]
• CERCLA Process Presentation by Rod Lentz [pdf, 9 pages, 65 kb]

Rainy Mine and Millsite

Rainy Mine Removal Update:
Removal Activities and access restrictions at the Rainy Mine will continue through November 6, 2011. Work delays have resulted from a General Closure order due to fire danger in September, and heavy rains in October.

• 1994-09-07 Rainy AIM datasheet--Moore [PDF, 17 pages, 4.1 MB]
• 2003-09-15 Rainy APA--Graham [PDF, 17 pages, 889 kb]
• 2005-07 Rainy SI report--CES [PDF, 70 pages, 7.4 MB]
• 2006-04-14 Rainy SRA report--MSE [PDF, 87 pages, 4.1 MB]
• 2007-03-12 Rainy ICIM--Sowa [PDF, 4 pages, 201 kb]
• 2008-06_Rainy_EECA_rpt--MSE
  • Complete [PDF, 104 pages, 9.77 MB]
  • Cover [PDF, 1 page, 155 kb]
  • Text [PDF, 38 pages, 282 kb]
  • Signature Page [PDF, 1 page, 122 kb]
  • Figures [PDF, 5 pages, 4.47 MB]
  • Tables [PDF, 19 pages, 1.63 MB]
  • Appendix A [PDF, 15 pages, 3.43 MB]
  • Appendix B - ARARs [PDF, 11 pages, 133 kb]
  • Appendix C - Costs [PDF 14 pages, 314 kb]
• 2009-04-03 Rainy Removal Action Memo--Carlson [PDF, 15 pages, 424 KB]
• 2010-04-10 Rainy CRP [PDF, 62 pages, 6 MB]
• 2010-04-13 Project Update -- Iwamoto [pdf, 2 pages, 24 kb]
• 2011-08-26 Rainy Mine Update Closure Notice [PDF, 2 pages, 430 kb]
• 2011-08-19 Rainy RMVL Work Plan CES [PDF, 165 pages, 3.8 MB]

Sunset Mine and Millsite

• 1994-08-21 Sunset AIM datasheet--Kramer [PDF, 2 pages, 170 kb]
• 2002-09 IAM lands--Sunset Mine Snohomish County, WA--WDGER [PDF, 15 pages, 4.1 MB]
• 2003-09-15 APA--Sunset--Graham [PDF, 19 pages, 1.3 MB]
• 2005-07 Sunset SI report--CES [PDF, 70 pages, 5.5 MB]
• 2006-05-25 Sunset SRA--MSE [PDF, 91 pages, 3.6 MB]
• 2007-03-12 Sunset ICIM--Sowa [PDF, 4 pages, 196 kb]
• 2008-02-06Sunset EECA--MSE [PDF, 98 pages, 8.2 MB]
• 2010-04-10 Sunset CRP [PDF, 62 pages, 6 MB]
• 2010-04-13 Project Update -- Iwamoto [PDF, 2 pages, 24 kb]
• Sunset Mine Community Relations Plan CRP - Iwamoto [PDF, 59 pages, 6 MB]
• Sunset Mine 2011 Pre-Removal Action and Inspection & Monitoring report  [PDF, 154 pages, 5 MB]
• 2014 Sunset Mine Data Gaps Investigation [PDF,41 pages ,7.2 MB]
• 2018 Sunset Mine and Mill RAM [PDF, 14 pages, 904 kb]
• 2018 Sunset Mine and Mill Removal Action Memorandum [PDF, 14 pages, 903.79 kb]

Index Bornite Mine

• Abbreviated Preliminary Assessment [PDF, 23 pages, 1.6 MB]

Cashman Millsite

• 2003 Cashman Mill Removal Action Memorandum [PDF, 11 pages, 275 kb]
• 2004 Cashman Mill Removal Action Report [PDF, 1122 pages, 66 MB]
• 2014 Cashman TCRA Transportation and Disposal Report [PDF, 166 pages, 17 MB]
• 2014 Cashman Time Critical RA Memorandum [PDF, 81 pages, 12.3 MB]

BNSF Railroad

Index Shooting Range

• 2017-02-07 Index Shooting Range Removal Action [PDF, 13 pages, 1 MB]
• 2015-03      Data Gaps Investigation Report [PDF, 57 pages, 1.57 MB]
• 2011-11-20 Draft Environmental Engineering Cost Estimate [PDF, 102 pages, 1.7 MB]
• 2011-04-30 Abbreviated Preliminary Assessment Index final-Seath [PDF, 6 pages, 177 KB]
• 2009-09-14 Soil Sampling Index Shooting Range [PDF,22 pages, 1.01 MB]
• 2009-09-14 Decision Memo Index Sportsmen Club [PDF, 61 pages, 1.92 MB]
• 2006-06-15 Groundwater Sampling Report-EA [PDF, 72 pages, 3.2 MB]
• 2004-04-19 Final Field Investigation Report-EA [ PDF, 31 pages,1.5 MB]