Superfund Information Systems: Site Profile

Superfund Site:

SILVER BOW CREEK/BUTTE AREA
BUTTE, MT

Cleanup Progress

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Cleaning up Superfund sites is a complex, multi-phase process. Learn more:

Site Milestones

Milestone Date(s)
Initial Assessment Completed 11/01/1979
Proposed to the National Priorities List 12/30/1982
Finalized on the National Priorities List 09/08/1983
Remedial Investigation Started 09/29/1983
Remedy Selected 09/28/1990
Final Remedy Selected 09/21/2006
Remedial Action Started 06/30/1992
Construction Completed Not Yet Achieved
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 08/30/2016
Site Ready for Reuse and Redevelopment Not Yet Achieved

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Cleanup Schedule by Operable Unit

During cleanup, a site can be divided into a number of distinct areas depending on its complexity. These areas, called operable units (OUs), may address geographic areas, specific problems, or areas where a specific action is required. Examples of typical operable units include construction of a groundwater pump and treatment system or construction of a cap over a landfill.

Milestone OU Start Date Completion Date OU ID
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 04/01/1988 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 03/31/1989 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 05/04/1990 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 06/07/1990 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 06/20/1990 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 06/26/1990 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 07/03/1990 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 05/31/1991 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 08/02/1991 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 05/12/1992 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 06/30/1992 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 03/17/1994 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 04/19/1999 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 10/26/2000 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 01/24/2005 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 09/11/2013 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 03/31/1989 00
Unilateral Administrative Order (State Performed) OU 00 - SITEWIDE 06/05/1989 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 05/17/1990 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 09/25/1991 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 11/20/1991 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 08/10/1992 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 06/17/1993 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 08/11/1994 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 10/16/1995 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 03/29/1996 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 06/11/1996 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 01/12/2000 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 04/11/2000 00
Removal (EPA Performed) OU 00 - SITEWIDE 02/22/1988 09/30/1988 00
Removal (PRP Performed, EPA Oversight) OU 00 - SITEWIDE 04/14/1988 10/15/1988 00
Removal (PRP Performed, EPA Oversight) OU 00 - SITEWIDE 06/05/1989 12/11/1989 00
Removal (State Performed) OU 00 - SITEWIDE 09/30/1989 11/21/1989 00
Removal (PRP Performed, EPA Oversight) OU 00 - SITEWIDE 06/19/1990 04/15/1994 00
Removal (PRP Performed, EPA Oversight) OU 00 - SITEWIDE 12/10/1991 01/17/1992 00
Removal (EPA Performed) OU 00 - SITEWIDE 04/29/1992 10/30/1992 00
Removal (PRP Performed, EPA Oversight) OU 00 - SITEWIDE 10/08/1992 12/02/1992 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 03/23/2000 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/30/2005 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 06/27/2011 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 08/30/2016 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE Estimated Aug - Oct 2021 00
Combined Remedial Investigation/Feasibility Study (State Performed) OU 01 - STREAMSIDE TLNGS (SBC) 09/29/1983 09/30/1991* 01
Combined Remedial Investigation/Feasibility Study (State Oversight) OU 01 - STREAMSIDE TLNGS (SBC) 09/30/1991* 11/29/1995 01
Record of Decision (EPA Performed) OU 01 - STREAMSIDE TLNGS (SBC) 11/29/1995 01
Explanation of Significant Differences (EPA Performed) OU 01 - STREAMSIDE TLNGS (SBC) 08/31/1998 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - STREAMSIDE TLNGS (SBC) 05/06/1996 05/06/1997* 01
Remedial Design (State Performed) OU 01 - STREAMSIDE TLNGS (SBC) 05/06/1997* 02/15/2002 01
Remedial Design (State Performed) OU 01 - STREAMSIDE TLNGS (SBC) 08/10/1998 04/19/1999* 01
Remedial Design (State Performed) OU 01 - STREAMSIDE TLNGS (SBC) 04/19/1999* 04/16/2004 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - STREAMSIDE TLNGS (SBC) 10/14/2007 05/05/2008 01
Remedial Design (State Performed) OU 01 - STREAMSIDE TLNGS (SBC) 01/08/2008 06/28/2009 01
Remedial Design (State Performed) OU 01 - STREAMSIDE TLNGS (SBC) 04/30/2010 07/08/2013 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - STREAMSIDE TLNGS (SBC) 08/13/1998 12/04/2003 01
Remedial Action (State Performed) OU 01 - STREAMSIDE TLNGS (SBC) 04/16/2004 08/24/2009 01
Remedial Action (State Performed) OU 01 - STREAMSIDE TLNGS (SBC) 08/21/2008 01
Remedial Action (State Performed) OU 01 - STREAMSIDE TLNGS (SBC) 07/15/2009 01
Remedial Action (State Performed) OU 01 - STREAMSIDE TLNGS (SBC) 07/08/2013 01
Combined Remedial Investigation/Feasibility Study (State Performed) OU 02 - AREA I 05/27/1988 01/23/1990 02
Consent Decree (EPA Performed) OU 03 - BERKELEY PT/MINE FLDNG (BUTTE) 08/14/2002 03
Combined Remedial Investigation/Feasibility Study (EPA Performed) OU 03 - BERKELEY PT/MINE FLDNG (BUTTE) 06/30/1988 05/04/1990* 03
Record of Decision (EPA Performed) OU 03 - BERKELEY PT/MINE FLDNG (BUTTE) 09/29/1994 03
Remedial Design (PRP Performed, EPA Oversight) OU 03 - BERKELEY PT/MINE FLDNG (BUTTE) 04/10/1996 09/03/1996 03
Remedial Design (PRP Performed, EPA Oversight) OU 03 - BERKELEY PT/MINE FLDNG (BUTTE) 03/06/1997 03/27/2002 03
Remedial Action (PRP Performed, EPA Oversight) OU 03 - BERKELEY PT/MINE FLDNG (BUTTE) 09/03/1996 11/25/1996 03
Remedial Action (PRP Performed, EPA Oversight) OU 03 - BERKELEY PT/MINE FLDNG (BUTTE) 03/27/2002 03
Removal (PRP Performed, EPA Oversight) OU 04 - WARM SPRINGS PONDS (SBC) 07/03/1990 01/11/1995 04
Combined Remedial Investigation/Feasibility Study (State Performed) OU 04 - WARM SPRINGS PONDS (SBC) 09/07/1988 03/22/1990* 04
Record of Decision (EPA Performed) OU 04 - WARM SPRINGS PONDS (SBC) 09/28/1990 04
Explanation of Significant Differences (EPA Performed) OU 04 - WARM SPRINGS PONDS (SBC) 06/24/1991 04
Remedial Design (PRP Performed, EPA Oversight) OU 04 - WARM SPRINGS PONDS (SBC) 10/24/1991 06/30/1992 04
Remedial Action (PRP Performed, EPA Oversight) OU 04 - WARM SPRINGS PONDS (SBC) 06/30/1992 04
Combined Remedial Investigation/Feasibility Study (State Performed) OU 05 - REDUCTION WORK TAILINGS (SBC) 05/27/1988 02/15/1989 05
Removal (PRP Performed, EPA Oversight) OU 06 - TRAVONA MINE (BUTTE) 03/31/1989 07/15/1996 06
Consent Decree (EPA Performed) OU 07 - ROCKER (SBC) 11/07/2000 07
Combined Remedial Investigation/Feasibility Study (EPA Performed) OU 07 - ROCKER (SBC) 09/07/1988 08/02/1991* 07
Record of Decision (EPA Performed) OU 07 - ROCKER (SBC) 12/22/1995 07
Explanation of Significant Differences (EPA Performed) OU 07 - ROCKER (SBC) 09/29/2014 07
Remedial Design (PRP Performed, EPA Oversight) OU 07 - ROCKER (SBC) 04/22/1996 04/09/1997 07
Remedial Action (PRP Performed, EPA Oversight) OU 07 - ROCKER (SBC) 04/09/1997 07
Unilateral Administrative Order (EPA Performed) OU 08 - SOILS (BUTTE) 07/21/2011 08
Removal (PRP Performed, EPA Oversight) OU 08 - SOILS (BUTTE) 10/20/1995 09/21/2006 08
Removal (PRP Performed, EPA Oversight) OU 08 - SOILS (BUTTE) 06/01/2000 09/21/2006 08
Combined Remedial Investigation/Feasibility Study (EPA Performed) OU 08 - SOILS (BUTTE) 02/15/1989 06/30/1992* 08
Record of Decision (EPA Performed) OU 08 - SOILS (BUTTE) 09/21/2006 08
Record of Decision Amendment (EPA Performed) OU 08 - SOILS (BUTTE) 02/04/2020 08
Explanation of Significant Differences (EPA Performed) OU 08 - SOILS (BUTTE) 07/18/2011 08
Remedial Design (PRP Performed, EPA Oversight) OU 08 - SOILS (BUTTE) 09/16/2011 08
Remedial Action (PRP Performed, EPA Oversight) OU 08 - SOILS (BUTTE) 09/16/2011 08
Removal (PRP Performed, EPA Oversight) OU 10 - BUTTE RESIDENTIAL SOILS 08/11/1994 09/21/2006 10
Removal (PRP Performed, EPA Oversight) OU 10 - BUTTE RESIDENTIAL SOILS 05/09/2001 06/27/2002 10
Removal (PRP Performed, EPA Oversight) OU 11 - LOWER AREA ONE 05/13/1992 08/31/2002 11
Feasibility Study (PRP Performed, EPA Oversight) OU 12 - WSP/INACTIVE AREA 01/15/1991 06/30/1992 12
Record of Decision (EPA Performed) OU 12 - WSP/INACTIVE AREA 06/30/1992 12
Remedial Design (PRP Performed, EPA Oversight) OU 12 - WSP/INACTIVE AREA 08/22/1993 05/18/1994 12
Remedial Action (PRP Performed, EPA Oversight) OU 12 - WSP/INACTIVE AREA 05/18/1994 12
Unilateral Administrative Order (EPA Performed) OU 13 - WEST SIDE SOILS 08/19/2019 13
Combined Remedial Investigation/Feasibility Study (EPA Performed) OU 13 - WEST SIDE SOILS 08/21/2018 13
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 13 - WEST SIDE SOILS 08/26/2019 13

*NOTE: This date may not reflect the actual start or actual completion of the milestone. Either the lead for this activity changed, the project was phased, or the project did not fit the normal definitions of activities tracked in this table.

NOTE: Dates and estimated dates will not display for all milestones. Estimated dates only display for milestones planned within the next three fiscal years. Estimated dates and start dates will not display for the following enforcement milestones: Administrative Order of Consent, Consent Decree and Unilateral Administrative Order. Start dates will not display for the following document milestones: Five-Year Review, Record of Decision, Record of Decision Amendment, Explanation of Significant Differences and Partial NPL Deletion.

DISCLAIMER: The data on this page are derived from the Superfund Enterprise Management System and are solely for informational purposes. The data cannot be relied upon to create any substantive or procedural rights or requirements enforceable by any party in litigation with any member of the public, states, tribes, the United States or any federal agency. EPA reserves the right to change these data at any time without public notice.

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