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Amchitka Underground Test Site

Mission Statement

Ensure the people of Alaska will not suffer adverse impacts to their health, or the environment due to the legacy of the underground nuclear testing carried out at Amchitka Island, Alaska, now or in the future.

Former Amchitka Airport Tower

Former Amchitka Airport Tower, Amchitka Island, Alaska

Reports prepared in response to concerns about Amchitka Island

Long Term Hydrological Monitoring Program: Amchitka, Alaska 1997 (PDF 4.9M); EPA, June 1998, EPA-402-R-98-002

Screening Risk Assessment for Possible Radionuclides in the Amchitka Marine Environment; US Department of Energy, National Nuclear Security Administration, Nevada Environmental Restoration Project, Environmental Restoration Division, DOE/NV/--857, Revision No: 0, October 2002

Modeling Groundwater Flow and Transport of Radionuclides at Amchitka Island's Underground Nuclear Tests: Milrow, Long Shot, and Cannikin; US Department of Energy, National Nuclear Security Administration, Nevada Operations Office, DOE/NV/11508-51, Publication No. 45172, October 2002

Screening Risk Assessment for Possible Radionuclides in the Amchitka Marine Environment

(US Department of Energy, National Nuclear Security Administration, Nevada Environmental Restoration Project, Environmental Restoration Division, Revision No: 0, October 2002)

Full Report (PDF 6.74M)

Compressed Amchitka Risk Assessment (PDF 6.8M)

The following links are smaller PDF segments of the report:

  • Title page, etc. (Table of Contents, List of Figures, List of Tables, List of Acronyms and Abbreviations)
  • Executive Summary
  • Chapters 1 - 4 (1-Introduction, 2-Objectives, 3-Setting, 4-Conceptual Model)
  • Chapter 5.1 - 5.8.1 (Steps of the Screening Risk Assessment, Scenario 1)
  • Chapter 5.8.2 - 5.8.9 (Scenario 2 to Scenario 9)
  • Chapters 6 - 8 (6-Data Quality & Uncertainty, 7-Summary, 8-References)
  • Figure 1 (Inset of Amchitka Island and Nearby Islands in Aleutian Islands)
  • Figure 2 (Conceptual Risk Assessment Model)
  • Figure 3 (Vertical Zonation or Exposure Depths for Kelp, Marine Mammals, and Marine Fishes Around Amchitka Island)
  • Figure 4 (Steps and Substeps in the Screening Risk Assessment
  • Figures 5 - 13 (Scenarios 1 - Scenario 9)
  • Appendix A.1 - A.3 (A.1-Introduction, A.2-Radionuclides of Potential Concern, A.3-Locations of Releases)
  • Appendix A.4 - A.5 (A.4-Seabed Substrates, A.5-Transport by Currents)
  • Appendix A.6 (Dilution Including Plume)
  • Appendix A.7 - A.9 (A.7-Human Receptors, A.8-Distribution of Diet, A.9-Bioconcentration Factors)
  • Appendix A.10 (Fraction of Contaminated Diet)
  • Appendix A.11 - A.14 (A.11-Cancer Morbidity Risk Coefficients, A.12-Limits to Cancer Risk, A.13-Calculation of Risks, A.14-Relationships of Site Closure Activities)
  • Appendix A.15 (References)
  • Figure A.1 (Conceptual Risk Assessment Model and Model Elements)
  • Figure A.2 (Locations of Cross-sections for Three Areas of Potential Release)
  • Figure A.3 (Cross-sections of Three Areas of Potential Release)
  • Figure A.4 (Ocean Currents Around Amchitka Island)
  • Figure A.5 (Predicted Plume at Cannikin Using EPA's CORMIX Model)
  • Figure A.6 (Predicted Plume at Long Shot Using EPA's CORMIX Model)
  • Figure A.7 (Predicted Plume at Milrow Using EPA's CORMIX Model)
  • Figure A.8 (Predicted Plume at Milrow with Kelp Using EPA's CORMIX Model)
  • Figure A.9 (Locations of 3-D Volumes for Three Areas of Potential Release)
  • Figure A.10 (3-D Volume Cutaway for Cannikin)
  • Figure A.11 (3-D Volume Cutaway for Long Shot)
  • Figure A.12 (3-D Volume Cutaway for Milrow)
  • Figure A.13 (3-D Volume Cutaway for Milrow with Kelp)
  • Figure A.14 (Geography Around Aleutian Islands and Area of Aleut Culture and Communications as well as the Large Offshore Exposure Volume (Inside Dashed Line))
  • Figure A.15 (Reporting Areas for Commercial Fishes)
  • Distribution

Modeling Groundwater Flow and Transport of Radionuclides at Amchitka Island's Underground Nuclear Tests: Milrow, Long Shot, and Cannikin

(US Department of Energy, National Nuclear Security Administration, Nevada Operations Office, DOE/NV/11508-51, Publication No. 45172, October 2002)

Full Report (PDF 11.7M)

The following links are smaller PDF segments of the full report:

  • Title page, Contents (Executive Summary, Acknowledgements, Contents, Figures, Tables, Acronyms, Symbols)
  • Chapter 1 (Introduction)
  • Chapter 2.1.1 to 2.2.4 (Conceptual Flow Model, Parameters, and Calibration; to 2.2.4 - Recharge)
  • Chapter 2.2.5 to 2.4.4 (Conceptual Flow Model, Parameters, and Calibration; 2.2.5 - Water Chemistry Data, to end of Chapter 2)
  • Chapter 3 (Conceptual Transport Model)
  • Chapter 4 (Parametric Uncertainty Analysis)
  • Chapter 5.1.1 (Flow and Transport Modeling Results; to 5.1.1 - Undecayed Breakthrough Curves)
  • Chapter 5.1.2 to 5.3.3 (Flow and Transport Modeling Results; 5.1.2 - Breakthrough with Radioactive Decay, to end of chapter)
  • Chapter 6 - Sensitivity Studies
  • Chapter 7 - Summary and Conclusions
  • References
  • Appendix A (Modeling the Transport of Reactive and Non-Reactive Solutes in Cores from the Cannikin Test site, Amchitka Island, Alaska)
  • Appendix B (Glass Dissolution Solution)
  • Appendix C (Modeling the Transport of Reactive and Non-Reactive Solutes in Cores from the Cannikin Test Site, Amchitka Island, Alaska)
  • Core photos
  • Distribution

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