Superfund Information Systems: Site Profile

Superfund Site:

CHEVRON QUESTA MINE
QUESTA, 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 03/10/2011
Proposed to the National Priorities List 05/11/2000
Finalized on the National Priorities List 09/16/2011
Remedial Investigation Started 09/27/2001
Remedy Selected 12/20/2010
Remedial Action Started 07/09/2012
Final Remedial Action Started 04/17/2019
Construction Completed Not Yet Achieved
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 06/28/2017
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
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 09/27/2001 00
Removal (PRP Performed, EPA Oversight) OU 00 - SITEWIDE 07/09/2012 03/30/2016 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 06/28/2017 00
Five-Year Review OU 00 - SITEWIDE Estimated Jun - Aug 2022 00
Administrative Order of Consent (EPA Performed) OU 01 - SOURCE 09/25/2012 01
Consent Decree (EPA Performed) OU 01 - SOURCE 05/01/2017 01
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 01 - SOURCE 09/27/2001 12/20/2010 01
Proposed Plan (PRP Performed, EPA Oversight) OU 01 - SOURCE 12/31/2009 12/31/2009 01
Record of Decision (EPA Performed) OU 01 - SOURCE 12/20/2010 01
Record of Decision Amendment OU 01 - SOURCE Estimated Jan - Mar 2022 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - SOURCE 09/25/2012 06/01/2015 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - SOURCE 09/25/2012 09/08/2016 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - SOURCE 09/25/2012 09/29/2016 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - SOURCE 09/25/2012 Estimated Dec 2019 - Feb 2020 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - SOURCE 01/17/2013 Estimated Sep - Nov 2020 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - SOURCE 09/30/2014 01/27/2016 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - SOURCE 09/30/2014 05/25/2018 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - SOURCE 09/30/2014 08/19/2015 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - SOURCE 11/06/2014 05/10/2019 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - SOURCE 11/06/2014 05/25/2018 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - SOURCE 02/09/2016 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - SOURCE 05/09/2017 Estimated Feb - Apr 2021 01
Remedial Design () OU 01 - SOURCE 07/25/2018 12/21/2018 01
Remedial Action () OU 01 - SOURCE 05/03/2017 12/06/2017 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - SOURCE 06/30/2017 07/21/2020 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - SOURCE 07/16/2017 01/29/2020 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - SOURCE 07/16/2017 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - SOURCE 05/25/2018 01
Remedial Action OU 01 - SOURCE Estimated Apr - Jun 2019 Estimated Oct - Dec 2021 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - SOURCE 04/17/2019 01
Long-Term Response Action (PRP Performed, EPA Oversight) OU 01 - SOURCE 01/29/2020 01
Long-Term Response Action (PRP Performed, EPA Oversight) OU 01 - SOURCE 07/21/2020 01
Administrative Order of Consent (EPA Performed) OU 02 - REMOVAL 01 03/07/2012 02
Remedial Action (PRP Performed, EPA Oversight) OU 02 - REMOVAL 01 07/09/2012 04/19/2013 02
Remedial Action (PRP Performed, EPA Oversight) OU 02 - REMOVAL 01 02/11/2013* 09/29/2014 02
Remedial Action (PRP Performed, EPA Oversight) OU 02 - REMOVAL 01 10/15/2013* 09/29/2014 02
Remedial Action (PRP Performed, EPA Oversight) OU 02 - REMOVAL 01 01/05/2015 03/30/2016 02

*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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