Superfund Information Systems: Site Profile

Superfund Site:

UNITED CREOSOTING CO.
CONROE, TX

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 08/01/1982
Proposed to the National Priorities List 09/08/1983
Finalized on the National Priorities List 09/21/1984
Remedial Investigation Started 03/28/1984
Remedy Selected 09/30/1986
Final Remedy Selected 10/14/1998
Remedial Action Started Not Yet Achieved
Construction Completed 09/30/1999
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 09/30/2015
Site Ready for Reuse and Redevelopment 09/26/2013

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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 12/27/1983 00
Removal (PRP Performed, EPA Oversight) OU 00 - SITEWIDE 12/29/1983 09/11/1984 00
Removal (EPA Performed) OU 00 - SITEWIDE 10/20/2008 10/29/2008 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/28/2000 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/23/2005 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/28/2010 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/30/2015 00
Five-Year Review OU 00 - SITEWIDE Estimated Sep - Nov 2020 00
Remedial Investigation (EPA Performed) OU 01 - OU 1 09/05/2019 Estimated May - Jul 2020 01
Remedial Investigation OU 01 - OU 1 Estimated Jan - Mar 2021 Estimated Sep - Nov 2021 01
Combined Remedial Investigation/Feasibility Study (State Performed) OU 01 - OU 1 03/28/1984 09/30/1986 01
Combined Remedial Investigation/Feasibility Study (State Performed) OU 01 - OU 1 06/30/1987 09/29/1989 01
Record of Decision (EPA Performed) OU 01 - OU 1 09/30/1986 01
Record of Decision (EPA Performed) OU 01 - OU 1 09/29/1989 01
Record of Decision Amendment (EPA Performed) OU 01 - OU 1 10/14/1998 01
Remedial Design (EPA Performed) OU 01 - OU 1 04/16/1987 02/11/1988 01
Remedial Design (State Performed) OU 01 - OU 1 11/16/1987 03/31/1988 01
Remedial Design (State Performed) OU 01 - OU 1 03/30/1990 03/03/1992 01
Remedial Design (State Performed) OU 01 - OU 1 03/26/1992 06/30/1995 01
Remedial Design (State Performed) OU 01 - OU 1 03/26/1992 12/08/1994 01
Remedial Design (State Performed) OU 01 - OU 1 07/22/1998 10/16/1998 01
Operation and Maintenance (State Performed) OU 01 - OU 1 02/09/2003 01

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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