Superfund Information Systems: Site Profile

Superfund Site:

ALLIED CHEMICAL & IRONTON COKE
IRONTON, OH

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 02/01/1981
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 09/29/1988
Final Remedy Selected 09/20/2007
Remedial Action Started 11/01/1991
Final Remedial Action Started 10/02/2014
Construction Completed 09/29/2016
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 09/10/2019
Site Ready for Reuse and Redevelopment 10/02/2018

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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 04/12/1984 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 02/15/1987 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 12/04/2001 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 03/09/1989 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 07/01/1991 00
Removal (PRP Performed, EPA Oversight) OU 00 - SITEWIDE 02/15/1987 08/09/1990 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 08/27/1999 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/13/2004 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/11/2009 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/11/2014 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/10/2019 00
Partial NPL Deletion OU 00 - SITEWIDE Estimated Sep - Nov 2020 00
Combined Remedial Investigation/Feasibility Study (EPA Performed) OU 01 - GOLDCAMP DISPOSAL AREA 12/30/1983 04/12/1984* 01
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 01 - GOLDCAMP DISPOSAL AREA 04/12/1984* 09/29/1988 01
Record of Decision (EPA Performed) OU 01 - GOLDCAMP DISPOSAL AREA 09/29/1988 01
Record of Decision Amendment (EPA Performed) OU 01 - GOLDCAMP DISPOSAL AREA 07/31/1995 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - GOLDCAMP DISPOSAL AREA 03/09/1989 05/10/1994 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - GOLDCAMP DISPOSAL AREA 07/15/1993 09/19/1995 01
Long-Term Response Action (PRP Performed, EPA Oversight) OU 01 - GOLDCAMP DISPOSAL AREA 09/19/1995 01
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 02 - COKE PLANT/LAGOON AREA 04/12/1984 12/28/1990 02
Record of Decision (EPA Performed) OU 02 - COKE PLANT/LAGOON AREA 12/28/1990 02
Record of Decision Amendment (EPA Performed) OU 02 - COKE PLANT/LAGOON AREA 09/04/1997 02
Record of Decision Amendment (EPA Performed) OU 02 - COKE PLANT/LAGOON AREA 09/30/1998 02
Explanation of Significant Differences (EPA Performed) OU 02 - COKE PLANT/LAGOON AREA 05/15/2020 02
Remedial Design (PRP Performed, EPA Oversight) OU 02 - COKE PLANT/LAGOON AREA 08/13/1991 05/15/1993 02
Remedial Design (PRP Performed, EPA Oversight) OU 02 - COKE PLANT/LAGOON AREA 06/16/1993 01/31/1996 02
Remedial Design (PRP Performed, EPA Oversight) OU 02 - COKE PLANT/LAGOON AREA 07/23/1993 09/30/1998 02
Remedial Action (PRP Performed, EPA Oversight) OU 02 - COKE PLANT/LAGOON AREA 11/01/1991 05/30/1993 02
Remedial Action (PRP Performed, EPA Oversight) OU 02 - COKE PLANT/LAGOON AREA 03/29/1993 05/30/1993 02
Remedial Action (PRP Performed, EPA Oversight) OU 02 - COKE PLANT/LAGOON AREA 03/03/1995 06/19/1997 02
Remedial Action (PRP Performed, EPA Oversight) OU 02 - COKE PLANT/LAGOON AREA 03/03/1995 09/29/2009 02
Long-Term Response Action (PRP Performed, EPA Oversight) OU 02 - COKE PLANT/LAGOON AREA 06/19/1997 02
Administrative Order of Consent (EPA Performed) OU 03 - TAR PLANT AREA 08/22/2003 03
Consent Decree (EPA Performed) OU 03 - TAR PLANT AREA 07/13/2010 03
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 03 - TAR PLANT AREA 08/22/2003 09/20/2007 03
Proposed Plan (EPA Performed) OU 03 - TAR PLANT AREA 07/16/2007 07/16/2007 03
Record of Decision (EPA Performed) OU 03 - TAR PLANT AREA 09/20/2007 03
Explanation of Significant Differences (EPA Performed) OU 03 - TAR PLANT AREA 03/06/2015 03
Remedial Design (PRP Performed, EPA Oversight) OU 03 - TAR PLANT AREA 01/05/2010 10/02/2014 03
Remedial Action (PRP Performed, EPA Oversight) OU 03 - TAR PLANT AREA 10/02/2014 03/29/2016 03
Operation and Maintenance (PRP Performed, EPA Oversight) OU 03 - TAR PLANT AREA 09/29/2016 Estimated Aug - Oct 2021 03

*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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