Superfund Information Systems: Site Profile

Superfund Site:

OLD NAVY DUMP/MANCHESTER LABORATORY (USEPA/NOAA)
MANCHESTER, WA

Cleanup Progress

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Cleaning up Superfund sites is a complex, multi-phase process. Learn more:

Site-Wide Milestones

Milestone Date(s)
Preliminary Assessment Completed 03/25/1988
Proposed to the National Priorities List 01/18/1994
Finalized on the National Priorities List 05/31/1994
Final Remedy Selected 09/30/1997
Remedial Action Started 06/22/1999
Construction Completed 09/30/2002
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 09/19/2014
Site Ready for Reuse and Redevelopment 09/27/2010

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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
Removal OU 00 - SITEWIDE 06/08/1998 09/29/1998 00
Five-Year Review OU 00 - SITEWIDE 09/19/2014 00
Five-Year Review OU 00 - SITEWIDE 09/28/2009 00
Five-Year Review OU 00 - SITEWIDE 09/30/2004 00
Combined Remedial Investigation/Feasibility Study OU 01 - REMEDIAL 10/18/1994 09/30/1997 01
Record of Decision OU 01 - REMEDIAL 09/30/1997 01
Remedial Design OU 01 - REMEDIAL 11/18/1997 06/22/1999 01
Remedial Action OU 01 - REMEDIAL 06/22/1999 03/29/2005 01

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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