HOMESTAKE MINING CO.
On this page:
|Preliminary Assessment/Site Investigation Completed||08/26/1982|
|Proposed to the National Priorities List||12/30/1982|
|Finalized on the National Priorities List||09/08/1983|
|Final Remedy Selected||09/27/1989|
|Remedial Action Started||12/31/1992|
|Deleted from National Priorities List||Not Yet Achieved|
|Most Recent Five-Year Review||07/28/2016|
|Site Ready for Reuse and Redevelopment||Not Yet Achieved|
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||05/08/2012||00|
|Five-Year Review||OU 00 - SITEWIDE||07/28/2016||00|
|Five-Year Review||OU 00 - SITEWIDE||09/26/2011||00|
|Five-Year Review||OU 00 - SITEWIDE||09/27/2001||00|
|Five-Year Review||OU 00 - SITEWIDE||09/29/2011||00|
|Remedial Investigation||OU 01 - OU 1, 2 AND 3||03/30/2014||01|
|Combined Remedial Investigation/Feasibility Study||OU 01 - OU 1, 2 AND 3||06/30/1987||09/27/1989||01|
|Record of Decision||OU 01 - OU 1, 2 AND 3||09/27/1989||01|
|Remedial Action||OU 01 - OU 1, 2 AND 3||12/31/1992||12/14/1993||01|
|Operation and Maintenance||OU 01 - OU 1, 2 AND 3||12/14/1993||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.