Superfund Information Systems: Site Profile

Superfund Site:

TUTU WELLFIELD
TUTU, VI

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 05/26/1989
Proposed to the National Priorities List 02/07/1992
Finalized on the National Priorities List 09/29/1995
Remedial Investigation Started 02/19/1992
Final Remedy Selected 08/05/1996
Remedial Action Started 08/10/1998
Construction Completed 03/29/2004
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 09/16/2019
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 03/03/1995 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 04/20/2005 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 09/07/2012 00
Consent Decree (EPA Performed) OU 00 - SITEWIDE 03/27/2018 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 03/22/1990 00
Removal (EPA Performed) OU 00 - SITEWIDE 09/02/1987 03/22/1990* 00
Removal (PRP Performed, EPA Oversight) OU 00 - SITEWIDE 03/22/1990* 05/31/1990 00
Removal (PRP Performed, EPA Oversight) OU 00 - SITEWIDE 09/24/1990 09/19/2005 00
Removal (PRP Performed, EPA Oversight) OU 00 - SITEWIDE 03/06/1995 07/05/2000 00
Removal (EPA Performed) OU 00 - SITEWIDE 04/18/1995 04/20/1995 00
Removal (EPA Performed) OU 00 - SITEWIDE 08/14/2013 09/29/2014 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 04/17/2009 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/29/2014 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/16/2019 00
Administrative Order of Consent (EPA Performed) OU 01 - ENTIRE SITE 02/19/1992 01
Unilateral Administrative Order (EPA Performed) OU 01 - ENTIRE SITE 05/18/1998 01
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 01 - ENTIRE SITE 02/19/1992 08/05/1996 01
Record of Decision (EPA Performed) OU 01 - ENTIRE SITE 08/05/1996 01
Explanation of Significant Differences (EPA Performed) OU 01 - ENTIRE SITE 04/15/2003 01
Remedial Design (EPA Performed) OU 01 - ENTIRE SITE 09/30/1997 09/28/2001 01
Remedial Design (EPA Performed) OU 01 - ENTIRE SITE 09/30/1997 11/29/2001 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - ENTIRE SITE 08/04/1998 12/14/1998 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - ENTIRE SITE 08/05/1998 01/21/2000 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - ENTIRE SITE 08/10/1998 08/10/1998 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - ENTIRE SITE 03/09/1999 02/15/2001 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - ENTIRE SITE 08/10/1998 03/23/1999 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - ENTIRE SITE 12/14/1998 11/06/2003 01
Remedial Action (EPA Performed) OU 01 - ENTIRE SITE 09/20/2002 09/28/2004 01
Long-Term Response Action (EPA Performed) OU 01 - ENTIRE SITE 09/28/2004 04/17/2013 01
Operation and Maintenance (State Performed) OU 01 - ENTIRE SITE 06/30/2004 01
Combined Remedial Investigation/Feasibility Study (EPA Performed) OU 02 - DNAPL DELINEATION 04/02/2015 Estimated Sep - Nov 2020 02
Record of Decision OU 02 - DNAPL DELINEATION Estimated Sep - Nov 2020 02
Remedial Design OU 02 - DNAPL DELINEATION Estimated Sep - Nov 2020 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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