Superfund Information Systems: Site Profile

Superfund Site:

CIMARRON MINING CORP.
CARRIZOZO, NM

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 04/01/1980
Preliminary Assessment/Site Investigation Completed 09/01/1988
Proposed to the National Priorities List 06/24/1988
Finalized on the National Priorities List 10/04/1989
Remedy Selected 09/21/1990
Final Remedy Selected 09/06/1991
Remedial Action Started 08/13/1991
Construction Completed 09/24/1992
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 09/13/2018
Site Ready for Reuse and Redevelopment 09/20/2007

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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 07/15/1991 05/28/1992 00
Removal OU 00 - SITEWIDE 08/11/1987 08/31/1987 00
Five-Year Review OU 00 - SITEWIDE 07/07/2003 00
Five-Year Review OU 00 - SITEWIDE 07/22/1998 00
Five-Year Review OU 00 - SITEWIDE 07/31/2008 00
Five-Year Review OU 00 - SITEWIDE 09/13/2018 00
Five-Year Review OU 00 - SITEWIDE 09/18/2013 00
Partial NPL Deletion OU 00 - SITEWIDE 08/31/2000 00
Combined Remedial Investigation/Feasibility Study OU 01 - CIMARRON MINE SITE 03/29/1989 09/21/1990 01
Record of Decision OU 01 - CIMARRON MINE SITE 09/21/1990 01
Remedial Design OU 01 - CIMARRON MINE SITE 05/02/1991 05/28/1991 01
Remedial Action OU 01 - CIMARRON MINE SITE 08/13/1991 09/30/1993 01
Long-Term Response Action OU 01 - CIMARRON MINE SITE 01/30/1994 09/30/2005 01
Operation and Maintenance OU 01 - CIMARRON MINE SITE 09/30/2005 01
Combined Remedial Investigation/Feasibility Study OU 02 - SIERRA BLANCA 06/27/1990 09/06/1991 02
Record of Decision OU 02 - SIERRA BLANCA 09/06/1991 02
Remedial Design OU 02 - SIERRA BLANCA 12/02/1991 12/16/1991 02
Remedial Action OU 02 - SIERRA BLANCA 12/20/1991 06/29/1998 02

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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