Superfund Information Systems: Site Profile

Superfund Site:

CARSON RIVER MERCURY SITE
DAYTON, NV

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/Site Investigation Completed 09/01/1986
Proposed to the National Priorities List 10/26/1989
Finalized on the National Priorities List 08/30/1990
Remedy Selected 03/30/1995
Remedial Action Started 09/30/1996
Construction Completed Not Yet Achieved
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 09/27/2013
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
Removal OU 00 - SITEWIDE 01/23/1991 01/30/1991 00
Removal OU 00 - SITEWIDE 07/08/1991 09/08/1991 00
Five-Year Review OU 00 - SITEWIDE 09/27/2013 00
Five-Year Review OU 00 - SITEWIDE 09/30/2003 00
Five-Year Review OU 00 - SITEWIDE 09/30/2008 00
Combined Remedial Investigation/Feasibility Study OU 01 - OVERALL SITE 09/28/1990 03/30/1995 01
Record of Decision OU 01 - OVERALL SITE 03/30/1995 01
Remedial Design OU 01 - OVERALL SITE 04/05/1995 09/30/1996 01
Remedial Action OU 01 - OVERALL SITE 09/30/1996 09/29/2000 01
Remedial Investigation OU 02 - OU02 09/22/2015 04/28/2017 02
Feasibility Study OU 02 - OU02 04/28/2017 02

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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