Superfund Information Systems: Site Profile

Superfund Site:

GILT EDGE MINE
LEAD, SD

Cleanup Progress

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

Site-Wide Milestones

Milestone Date(s)
Preliminary Assessment/Site Investigation Completed 09/29/2000
Proposed to the National Priorities List 05/11/2000
Finalized on the National Priorities List 12/01/2000
Remedy Selected 04/23/2001
Remedial Action Started 07/17/2001
Construction Completed Not Yet Achieved
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 06/20/2017
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
Removal OU 00 - SITEWIDE 08/19/2002 02/19/2003 00
Removal OU 00 - SITEWIDE 09/01/2000 12/11/2001 00
Five-Year Review OU 00 - SITEWIDE 04/10/2007 00
Five-Year Review OU 00 - SITEWIDE 06/20/2017 00
Five-Year Review OU 00 - SITEWIDE 06/21/2012 00
Combined Remedial Investigation/Feasibility Study OU 01 - SURFACE 09/27/1999 09/29/2008 01
Record of Decision OU 01 - SURFACE 09/29/2008 01
Remedial Design OU 01 - SURFACE 12/15/2008 09/26/2014 01
Remedial Action OU 01 - SURFACE 02/10/2015 01
Combined Remedial Investigation/Feasibility Study OU 02 - WATER TREATMENT 02/09/2018 02
Combined Remedial Investigation/Feasibility Study OU 02 - WATER TREATMENT 04/26/2012 02
Combined Remedial Investigation/Feasibility Study OU 02 - WATER TREATMENT 09/25/2000 11/30/2001 02
Record of Decision OU 02 - WATER TREATMENT 04/23/2001 02
Record of Decision OU 02 - WATER TREATMENT 11/30/2001 02
Remedial Design OU 02 - WATER TREATMENT 01/30/2002 08/27/2004 02
Remedial Design OU 02 - WATER TREATMENT 09/16/2009 03/31/2010 02
Remedial Action OU 02 - WATER TREATMENT 04/18/2002 02
Remedial Action OU 02 - WATER TREATMENT 07/17/2001 02
Long-Term Response Action OU 02 - WATER TREATMENT 05/30/2002 05/30/2002 02
Combined Remedial Investigation/Feasibility Study OU 03 - RUBY DUMP/CAP CLOSURE 09/25/2000 08/30/2001 03
Record of Decision OU 03 - RUBY DUMP/CAP CLOSURE 08/30/2001 03
Remedial Design OU 03 - RUBY DUMP/CAP CLOSURE 09/24/2001 03/27/2002 03
Remedial Action OU 03 - RUBY DUMP/CAP CLOSURE 09/24/2001 03
Remedial Action OU 03 - RUBY DUMP/CAP CLOSURE 08/23/2012 03
Long-Term Response Action OU 03 - RUBY DUMP/CAP CLOSURE 02/20/2004 09/21/2006 03

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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