Superfund Information Systems: Site Profile

Superfund Site:

UNITED NUCLEAR CORP.
CHURCH ROCK, NM

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 05/01/1980
Proposed to the National Priorities List 12/30/1982
Finalized on the National Priorities List 09/08/1983
Remedial Investigation Started 09/23/1983
Remedy Selected 09/30/1988
Remedial Action Started 09/12/1989
Construction Completed 09/29/1998
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 09/18/2018
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
Unilateral Administrative Order (EPA Performed) OU 00 - OU00 - SITEWIDE 06/29/1989 00
Five-Year Review (EPA Performed) OU 00 - OU00 - SITEWIDE 09/24/1998 00
Five-Year Review (EPA Performed) OU 00 - OU00 - SITEWIDE 09/18/2003 00
Five-Year Review (EPA Performed) OU 00 - OU00 - SITEWIDE 09/17/2008 00
Five-Year Review (EPA Performed) OU 00 - OU00 - SITEWIDE 09/27/2013 00
Five-Year Review (EPA Performed) OU 00 - OU00 - SITEWIDE 09/18/2018 00
Feasibility Study (PRP Performed, EPA Oversight) OU 01 - OU01 - GROUNDWATER 03/10/2004 Estimated Dec 2020 - Feb 2021 01
Combined Remedial Investigation/Feasibility Study (EPA Performed) OU 01 - OU01 - GROUNDWATER 09/23/1983 09/30/1988 01
Record of Decision (EPA Performed) OU 01 - OU01 - GROUNDWATER 09/30/1988 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - OU01 - GROUNDWATER 06/29/1989 09/12/1989 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - OU01 - GROUNDWATER 09/12/1989 09/12/1989 01
Long-Term Response Action (PRP Performed, EPA Oversight) OU 01 - OU01 - GROUNDWATER 09/29/1998 01
Operation and Maintenance (PRP Performed, EPA Oversight) OU 01 - OU01 - GROUNDWATER 09/30/1990 01
Administrative Order of Consent (EPA Performed) OU 02 - OU02 - SURFACE SOILS 04/21/2015 02
Proposed Plan (EPA Performed) OU 02 - OU02 - SURFACE SOILS 04/09/2012 09/21/2012 02
Record of Decision (EPA Performed) OU 02 - OU02 - SURFACE SOILS 03/29/2013 02
Remedial Design (PRP Performed, EPA Oversight) OU 02 - OU02 - SURFACE SOILS 04/27/2015 Estimated Dec 2020 - Feb 2021 02

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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