Superfund Information Systems: Site Profile

Superfund Site:

CALIFORNIA GULCH
LEADVILLE, CO

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 08/30/1982
Proposed to the National Priorities List 12/30/1982
Finalized on the National Priorities List 09/08/1983
Remedial Investigation Started 12/30/1983
Remedy Selected 03/29/1988
Final Remedy Selected 09/28/2010
Remedial Action Started 09/07/1988
Final Remedial Action Started Estimated Mar - May 2020
Construction Completed Estimated Mar - May 2021
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 09/29/2017
Site Ready for Reuse and Redevelopment Estimated Mar - May 2021

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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 09/28/1990 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 12/14/1990 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 09/12/1991 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 12/01/1991 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 09/25/1992 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 06/26/1992 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 01/06/1993 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 08/03/1993 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 09/03/1993 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 12/15/1993 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 08/17/1994 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 08/26/1994 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 10/06/1995 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 08/05/1988 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 03/29/1989 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 08/29/1991 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 09/10/1991 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 09/17/1993 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 05/18/1994 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 07/24/1996 00
Removal (EPA Performed) OU 00 - SITEWIDE 02/15/1986 05/29/1986 00
Removal (PRP Performed, EPA Oversight) OU 00 - SITEWIDE 12/14/1990 08/31/1992 00
Removal (EPA Performed) OU 00 - SITEWIDE 06/04/1993 06/04/1993 00
Removal (EPA Performed) OU 00 - SITEWIDE 09/09/1994 09/20/1994 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 02/02/1996 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/28/2001 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/28/2007 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/27/2012 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/29/2017 00
Remedial Investigation (PRP Performed, EPA Oversight) OU 01 - YAK TUNNEL 06/04/1992 09/27/1996 01
Feasibility Study (EPA Performed) OU 01 - YAK TUNNEL 07/05/2000 01/07/2005 01
Combined Remedial Investigation/Feasibility Study (EPA Performed) OU 01 - YAK TUNNEL 12/30/1983 03/29/1988 01
Record of Decision (EPA Performed) OU 01 - YAK TUNNEL 03/29/1988 01
Record of Decision Amendment (EPA Performed) OU 01 - YAK TUNNEL 03/23/1989 01
Explanation of Significant Differences (EPA Performed) OU 01 - YAK TUNNEL 04/01/1989 01
Explanation of Significant Differences (EPA Performed) OU 01 - YAK TUNNEL 10/01/1991 01
Explanation of Significant Differences (EPA Performed) OU 01 - YAK TUNNEL 07/29/2013 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - YAK TUNNEL 04/05/1988 03/02/1989 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - YAK TUNNEL 04/25/1989 05/03/1991 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - YAK TUNNEL 04/29/1993 09/27/1993 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - YAK TUNNEL 09/07/1988 06/28/1991 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - YAK TUNNEL 09/04/1990 02/08/1992 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - YAK TUNNEL 03/29/1994 11/09/1994 01
Operation and Maintenance (PRP Performed, EPA Oversight) OU 01 - YAK TUNNEL 11/03/1989 01
Partial NPL Deletion (EPA Performed) OU 01 - YAK TUNNEL 04/11/2016 01
Removal (EPA Performed) OU 02 - HECLA TAILINGS 07/31/1995 08/18/1998 02
Removal (EPA Performed) OU 02 - HECLA TAILINGS 08/31/1995 08/18/1998 02
Removal (EPA Performed) OU 02 - HECLA TAILINGS 08/31/1996 08/18/1998 02
Removal (EPA Performed) OU 02 - HECLA TAILINGS 05/26/1998 07/02/1998 02
Removal (EPA Performed) OU 02 - HECLA TAILINGS 05/03/2004 05/28/2004 02
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 02 - HECLA TAILINGS 04/07/1987 08/26/1993 02
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 02 - HECLA TAILINGS 09/10/1993 08/26/1994 02
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 02 - HECLA TAILINGS 08/17/1994 08/26/1994 02
Record of Decision (EPA Performed) OU 02 - HECLA TAILINGS 09/30/1999 02
Explanation of Significant Differences (EPA Performed) OU 02 - HECLA TAILINGS 07/29/2013 02
Operation and Maintenance (PRP Performed, EPA Oversight) OU 02 - HECLA TAILINGS 05/28/2004 02
Partial NPL Deletion (EPA Performed) OU 02 - HECLA TAILINGS 07/23/2001 02
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 03 - DRG & W SLAG PILES 03/02/1994 08/26/1994 03
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 03 - DRG & W SLAG PILES 08/26/1994 09/27/1996 03
Record of Decision (EPA Performed) OU 03 - DRG & W SLAG PILES 05/06/1998 03
Explanation of Significant Differences (EPA Performed) OU 03 - DRG & W SLAG PILES 08/06/2014 03
Partial NPL Deletion (EPA Performed) OU 03 - DRG & W SLAG PILES 04/11/2016 03
Removal (PRP Performed, EPA Oversight) OU 04 - UPPER CAL GULCH 08/04/1995 06/30/1998 04
Removal (PRP Performed, EPA Oversight) OU 04 - UPPER CAL GULCH 10/31/1995 06/30/1998 04
Removal (PRP Performed, EPA Oversight) OU 04 - UPPER CAL GULCH 07/19/1996 06/30/1998 04
Feasibility Study (PRP Performed, EPA Oversight) OU 04 - UPPER CAL GULCH 05/05/1995 03/21/1997 04
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 04 - UPPER CAL GULCH 04/07/1987 08/26/1994 04
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 04 - UPPER CAL GULCH 12/15/1992 08/26/1994 04
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 04 - UPPER CAL GULCH 02/03/1994 08/26/1994 04
Record of Decision (EPA Performed) OU 04 - UPPER CAL GULCH 03/31/1998 04
Explanation of Significant Differences (EPA Performed) OU 04 - UPPER CAL GULCH 03/17/2004 04
Explanation of Significant Differences (EPA Performed) OU 04 - UPPER CAL GULCH 07/29/2013 04
Remedial Design (PRP Performed, EPA Oversight) OU 04 - UPPER CAL GULCH 03/31/1998 07/28/1998 04
Remedial Action (PRP Performed, EPA Oversight) OU 04 - UPPER CAL GULCH 07/28/1998 09/02/2003 04
Operation and Maintenance (PRP Performed, EPA Oversight) OU 04 - UPPER CAL GULCH 09/02/2003 04
Partial NPL Deletion (EPA Performed) OU 04 - UPPER CAL GULCH 10/24/2014 04
Feasibility Study (PRP Performed, EPA Oversight) OU 05 - SMELTERS/MILL SITES 05/10/1999 09/29/2000 05
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 05 - SMELTERS/MILL SITES 08/29/1994 10/31/2000 05
Record of Decision (EPA Performed) OU 05 - SMELTERS/MILL SITES 09/29/2000 05
Record of Decision (EPA Performed) OU 05 - SMELTERS/MILL SITES 10/31/2000 05
Remedial Design (PRP Performed, EPA Oversight) OU 05 - SMELTERS/MILL SITES 02/22/2001 09/22/2004 05
Remedial Action (PRP Performed, EPA Oversight) OU 05 - SMELTERS/MILL SITES 09/22/2004 02/17/2010 05
Operation and Maintenance (PRP Performed, EPA Oversight) OU 05 - SMELTERS/MILL SITES 10/01/2012 05
Partial NPL Deletion (EPA Performed) OU 05 - SMELTERS/MILL SITES 10/24/2014 05
Removal (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 08/24/1995 08/19/1998 06
Removal (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 05/01/1996 08/19/1998 06
Removal (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 07/26/1996 10/04/1999 06
Removal (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 06/24/1997 12/28/2000 06
Removal (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 10/26/1998 12/28/2000 06
Removal (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 06/30/2000 10/13/2000 06
Removal (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 06/25/2001 06
Removal (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 02/19/2008 09/29/2009 06
Removal (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 08/14/2012 11/12/2012 06
Removal (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 05/22/2014 09/30/2014 06
Removal (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 05/01/2015 Estimated Sep - Nov 2021 06
Feasibility Study (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 03/30/1994 08/26/1994 06
Feasibility Study (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 12/09/1999 09/11/2002 06
Feasibility Study (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 08/14/2009 09/28/2010 06
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 12/01/1991 08/26/1994 06
Record of Decision (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 09/25/2003 06
Record of Decision Amendment (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 09/28/2010 06
Remedial Design (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 05/11/2004 08/15/2006 06
Remedial Design (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 07/28/2011 09/06/2012 06
Remedial Design (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 09/20/2011 Estimated Sep - Nov 2021 06
Remedial Action (EPA Performed) OU 06 - HAMM'S TAILINGS/PENROSE DUMP 04/23/2012 06/13/2013 06
Remedial Action OU 06 - HAMM'S TAILINGS/PENROSE DUMP Estimated Mar - May 2020 06
Unilateral Administrative Order (EPA Performed) OU 07 - APACHE TAILINGS 08/29/2000 07
Unilateral Administrative Order (EPA Performed) OU 07 - APACHE TAILINGS 09/01/2000 07
Removal (EPA Performed) OU 07 - APACHE TAILINGS 08/08/1996 06/30/1998 07
Removal (PRP Performed, EPA Oversight) OU 07 - APACHE TAILINGS 04/07/1997 06/30/1998 07
Removal (PRP Performed, EPA Oversight) OU 07 - APACHE TAILINGS 10/04/1999 10/29/1999 07
Feasibility Study (PRP Performed, EPA Oversight) OU 07 - APACHE TAILINGS 09/16/1993 08/26/1994 07
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 07 - APACHE TAILINGS 08/26/1994 06/06/2000 07
Record of Decision (EPA Performed) OU 07 - APACHE TAILINGS 06/06/2000 07
Remedial Design (PRP Performed, EPA Oversight) OU 07 - APACHE TAILINGS 06/06/2000 07/02/2001 07
Remedial Action (PRP Performed, EPA Oversight) OU 07 - APACHE TAILINGS 07/02/2001 12/17/2003 07
Operation and Maintenance (PRP Performed, EPA Oversight) OU 07 - APACHE TAILINGS 12/17/2003 08/28/2007 07
Operation and Maintenance (PRP Performed, EPA Oversight) OU 07 - APACHE TAILINGS 08/28/2007 07
Partial NPL Deletion (EPA Performed) OU 07 - APACHE TAILINGS 10/24/2014 07
Removal (PRP Performed, EPA Oversight) OU 08 - LOWER CAL GULCH 08/04/1995 06/30/1998 08
Removal (PRP Performed, EPA Oversight) OU 08 - LOWER CAL GULCH 06/11/1998 02/05/1999 08
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 08 - LOWER CAL GULCH 08/26/1994 09/29/2000 08
Record of Decision (EPA Performed) OU 08 - LOWER CAL GULCH 09/29/2000 08
Remedial Design (PRP Performed, EPA Oversight) OU 08 - LOWER CAL GULCH 05/11/2001 07/22/2002 08
Remedial Action (PRP Performed, EPA Oversight) OU 08 - LOWER CAL GULCH 07/22/2002 09/02/2003 08
Operation and Maintenance (PRP Performed, EPA Oversight) OU 08 - LOWER CAL GULCH 09/02/2003 08
Partial NPL Deletion (EPA Performed) OU 08 - LOWER CAL GULCH 01/12/2010 08
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 05/30/1996 05/26/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 07/01/1996 05/26/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 07/07/1996 05/26/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 08/15/1996 08/14/2001 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 08/29/1996 05/26/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 08/30/1996 05/26/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 01/08/1997 05/26/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 04/01/1997 05/26/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 06/10/1997 05/26/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 07/30/1997 05/26/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 09/12/1997 05/26/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 09/12/1997 07/22/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 10/01/1997 05/26/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 10/21/1997 05/26/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 12/01/1997 12/15/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 06/08/1998 12/15/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 07/07/1998 12/15/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 07/24/1998 04/21/2000 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 08/17/1998 12/15/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 09/17/1998 12/15/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 09/24/1998 12/15/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 10/05/1998 12/15/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 10/22/1998 12/15/1998 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 07/12/1999 10/12/1999 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 10/06/1999 10/28/1999 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 10/21/1999 10/28/1999 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 11/11/1999 04/21/2000 09
Removal (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 11/29/1999 12/01/1999 09
Removal (EPA Performed) OU 09 - RESIDENTIAL SOIL 09/19/2005 08/14/2006 09
Removal (EPA Performed) OU 09 - RESIDENTIAL SOIL 07/17/2006 08/23/2007 09
Removal (EPA Performed) OU 09 - RESIDENTIAL SOIL 06/15/2009 08/19/2009 09
Removal (EPA Performed) OU 09 - RESIDENTIAL SOIL 10/03/2016 10/16/2016 09
Remedial Investigation (EPA Performed) OU 09 - RESIDENTIAL SOIL 05/05/1994 08/26/1994 09
Remedial Investigation (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 05/05/1994 08/26/1994 09
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 12/18/1992 08/26/1994 09
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 12/18/1992 08/28/1994 09
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 09/15/1993 08/26/1994 09
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 08/26/1994 09/02/1999 09
Record of Decision (EPA Performed) OU 09 - RESIDENTIAL SOIL 09/02/1999 09
Remedial Design (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 09/02/1999 12/29/2000 09
Remedial Action (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 06/13/2000 09/30/2005* 09
Remedial Action (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 09/30/2005* 01/24/2011 09
Operation and Maintenance (PRP Performed, EPA Oversight) OU 09 - RESIDENTIAL SOIL 10/21/2010 09
Partial NPL Deletion (EPA Performed) OU 09 - RESIDENTIAL SOIL 04/22/2002 09
Partial NPL Deletion (EPA Performed) OU 09 - RESIDENTIAL SOIL 09/21/2011 09
Removal (PRP Performed, EPA Oversight) OU 10 - OREGON GULCH 08/04/1995 06/30/1998 10
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 10 - OREGON GULCH 08/28/1994 12/05/1996 10
Record of Decision (EPA Performed) OU 10 - OREGON GULCH 08/08/1997 10
Explanation of Significant Differences (EPA Performed) OU 10 - OREGON GULCH 07/29/2013 10
Remedial Design (PRP Performed, EPA Oversight) OU 10 - OREGON GULCH 11/04/1997 06/03/1998 10
Remedial Action (PRP Performed, EPA Oversight) OU 10 - OREGON GULCH 06/03/1998 09/30/1999 10
Operation and Maintenance (PRP Performed, EPA Oversight) OU 10 - OREGON GULCH 09/30/1999 10
Partial NPL Deletion (EPA Performed) OU 10 - OREGON GULCH 04/16/2001 10
Removal (EPA Performed) OU 11 - ARKANSAS FLOOD PLAIN 09/23/1997 10/26/2007 11
Removal (EPA Performed) OU 11 - ARKANSAS FLOOD PLAIN 07/26/1999 10/26/2007 11
Removal (EPA Performed) OU 11 - ARKANSAS FLOOD PLAIN 08/10/2000 10/26/2007 11
Combined Remedial Investigation/Feasibility Study (EPA Performed) OU 11 - ARKANSAS FLOOD PLAIN 08/06/2001 09/28/2005 11
Record of Decision (EPA Performed) OU 11 - ARKANSAS FLOOD PLAIN 09/28/2005 11
Remedial Design (EPA Performed) OU 11 - ARKANSAS FLOOD PLAIN 09/27/2005 09/17/2007 11
Remedial Action (EPA Performed) OU 11 - ARKANSAS FLOOD PLAIN 09/13/2006 09/19/2013 11
Operation and Maintenance (PRP Performed, EPA Oversight) OU 11 - ARKANSAS FLOOD PLAIN 05/01/2017 11
Partial NPL Deletion OU 11 - ARKANSAS FLOOD PLAIN Estimated Sep - Nov 2019 11
Removal (EPA Performed) OU 12 - SITE-WIDE WATER QUALITY 05/01/2015 Estimated Sep - Nov 2020 12
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 12 - SITE-WIDE WATER QUALITY 08/26/1994 09/22/2009 12
Record of Decision (EPA Performed) OU 12 - SITE-WIDE WATER QUALITY 09/22/2009 12
Remedial Design (EPA Performed) OU 12 - SITE-WIDE WATER QUALITY 09/03/2013 04/29/2015 12
Remedial Action (EPA Performed) OU 12 - SITE-WIDE WATER QUALITY 09/23/2014 Estimated Sep - Nov 2020 12
Operation and Maintenance OU 12 - SITE-WIDE WATER QUALITY Estimated Sep - Nov 2020 12

*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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