Listed below are reports available for the St. Louis River-U.S. Steel Superfund site. For more information about these reports, contact the site staff listed on in the Staff Contact section.
Reports available online
Administrative-Decision Documents (Site wide issues-includes land and sediment)
Fourth Five-year Review Report US Steel Duluth Works (c-s3-06bf)- Project Management Transition Request US Steel Duluth Works site (c-s3-06bg)
- 2013 Five Year Review for the St. Louis River Superfund Site
- Second Five Year Review Report Volume 1 USS
- Five Year Review Report First Review for St. Louis River Superfund Site; September 2003
- Record of Decision 1989 for the US Steel Site
- Response Order By Consent 1985 US Steel Site
- Duluth Works: A Reuse Planning Report for the US Steel Superfund Site
Land and Upland Sediment
- 2020 Annual Monitoring and Inspection Report U.S. Steel (c-s3-06bk)
- 2019 Annual Monitoring and Inspection Report U.S. Steel (c-s3-06bj)
- 2018 Annual Monitoring and Inspection Report U.S. Steel (c-s3-06bi)
- 2017 Annual Monitoring and Inspection Report U.S. Steel (c-s3-06bh)
- 2016 Annual Monitoring and Inspection Report U.S. Steel (c-s3-06be)
- U.S. Steel (USS) Annual Monitoring Report for 2015 (c-s3-06ax)
- U.S. Steel (USS) Annual Monitoring Report for 2014
- U.S. Steel (USS) Annual Monitoring Report for 2013
- U.S. Steel (USS) Annual Monitoring Report February 2012
- 2005 Annual Monitoring and Inspection Report
- 2004 Annual Monitoring and Inspection Report; February 10, 2005
- 2003 Annual Monitoring and Inspection Report
- 2001 Annual Inspection and Monitoring Report; February 7, 2002
- Annual Inspection Report 2000, Follow-up Former Duluth Works Site; May 14, 2001
- Annual Inspection Report 2000, Former Duluth Works Site; January 9, 2001
- Annual Monitoring Report, October 1995 - September 1996, USX Duluth Works Site; January 1997
- Annual Monitoring Report, October 1994 - September 1995, USX Duluth Works Site; February 1996
- Annual Monitoring Report, October 1993 - September 1994, USX Duluth Works Site; February 1995
- Annual Monitoring Report, October 1992 - September 1993, USX Duluth Works Site; January 1994
- Annual Monitoring Report, October 1991 - September 1992, USX Duluth Works Site; January 1993
- Annual Monitoring Report, October 1990 - September 1991; July 1992
- Annual Monitoring Report, October 1989 - September 1990, USX Duluth Works Site; January 1991
- Annual Monitoring Report, October 1988 - September 1989, USX Duluth Works Site; January 1990
- Annual Monitoring Report, October 1987 - September 1988, USX Duluth Works Site; January 1989
- Annual Monitoring Report, October 1986 - September 1987, USX Duluth Works Site; January 1988
- Annual Monitoring Report, October 1985 - September 1986, USX Duluth Works Site; January 1987
- Former Duluth Works LIF Investigation Report; July 24, 2002
- Documentation Report for Removal of Underground Coke Oven Gas Lines U.S. Steel Former Duluth Works Site; January 2000
- Wire Mill Remedial Investigation/Response Action Implementation Final Report USS Duluth Works Site; May 1989
- Remedial Investigation Final Report USS Duluth Works Site; December 1986
- Operable Unit J Repair Certification Report; December 3, 2001
- Response Action Implementation Certification Report Wire Mill Pond US Steel Duluth Works Site; February 1998
- Solidification/Stabilization Operable Unit J US Steel Duluth Works Site; April 18, 1997
- Response Action Plan Wire Mill Pond USX Duluth Works Site; February 1996
- Response Action Final Report- Excavation and Management of Tar Materials and Related Work USX Duluth Works Site; November 1995
- Recommendation Report Operable Unit J Duluth Minnesota; August 1995
- Final Response Action Report 1992 Coke Plant Clean Up: Materials Management, Demolition & Restoration Duluth Works Site; February 1994
- Response Action Report Coke Plant Cleanup and Demolition US Steel Duluth Works Site; June 1993
- Phase II Response Action Plan USX Duluth Works Site; June 1993
- Phase 1 Response Action Plan/Operable Unit B, C, E, H, & K USX Duluth Works Site; October 1992
- Mercury Cleanup Former Shed Location U.S. Steel Plant
- Response Action Final Report 1988 Drum and Tank Work Duluth Works Site; April 1991
- Semiannual Visual Inspection of US Steel Site; March 1985
St. Louis River Sediment
Recent
- Addendum to Revised Feasibility Study (c-s3-06aw)
- Revised Feasibility Study Former Duluth Works and Spirit Lake Sediment Site
- Appendix A — Summary of Administrative History
- Appendix B — Upland Surface Water Technical Memo
- Appendix C — Upland Wetland Delineation Report
- Appendix D — Summary of Hydrodynamic, Sediment Transport, and Wave Modeling
- Appendix E — Revised Estuary Supplemental Investigation Report
- Appendix F — Groundwater/Surface Water Seepage Meter Sampling and Analysis Results
- Appendix G — Potential Permitting Requirements
- Appendix H — ARARs
- Appendix I — Schematic Diagrams of Remedy Elements
- Final U.S. Steel (USS) Spirit Lake Sediment Investigation Remedial Investigation Report March 2013
- Appendix A: Sediment Core Boring Logs and Photographs — File too large for downloading, contact Erin Endsley for more information.
- Appendix B — Site Specific PAH Toxicity Unit Correlation Factors
- Appendix C — Spirit Lake Hydrograph
- Appendix D — Meteorological Data Graphs
- Appendix E — Ice Evaluation
- Appendix F — Geotechnical Memo
- Appendix G: Analytical Laboratory Data Reports — File too large for downloading, contact Erin Endsley for more information.
- Appendix H — Summary of Selected Chemical Results
- Appendix I — Hydrodynamic and Bed Stability
- Appendix J — Historical Maps and Photographs
- Appendix K — Human Health Risk Evaluation
- Appendix L: Comparison of Data Sets
- U.S. Steel (USS) Spirit Lake Habitat Characterization May 2013
- U.S. Steel (USS) Spirit Lake Habitat Wetland Delineation April 2013
Location of site documents and records
MPCA, Duluth Office
525 Lake Ave. S
Suite 400
Duluth, MN 55802
Phone: 218-723-4660
Fax: 218-723-4727