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