Superfund Information Systems: Site Profile

Superfund Site:

AEROJET GENERAL CORP.
RANCHO CORDOVA, CA

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 08/01/1979
Proposed to the National Priorities List 12/30/1982
Finalized on the National Priorities List 09/08/1983
Remedial Investigation Started 09/08/1988
Remedy Selected 07/20/2001
Remedial Action Started 09/12/2003
Construction Completed Not Yet Achieved
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 09/22/2016
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
Consent Decree (EPA Performed) OU 00 - SITEWIDE 06/23/1989 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 05/08/1995 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/22/2016 00
Five-Year Review OU 00 - SITEWIDE Estimated Sep - Nov 2021 00
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 01 - OVERALL SITE 09/08/1988 01
Removal (PRP Performed, EPA Oversight) OU 02 - AMERICAN RIVER GET 05/08/1995 11/22/1995* 02
Removal (State Performed) OU 02 - AMERICAN RIVER GET 11/22/1995 02/15/2011 02
Unilateral Administrative Order (EPA Performed) OU 03 - WESTERN GW OU 08/09/2002 03
Record of Decision (EPA Performed) OU 03 - WESTERN GW OU 07/20/2001 03
Remedial Design (PRP Performed, EPA Oversight) OU 03 - WESTERN GW OU 09/20/2002 02/20/2009 03
Remedial Action (PRP Performed, EPA Oversight) OU 03 - WESTERN GW OU 09/12/2003 08/22/2012 03
Long-Term Response Action (PRP Performed, EPA Oversight) OU 03 - WESTERN GW OU 07/07/2011 03
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 04 - AREA 41 SOIL & GW 09/30/1989 04
Unilateral Administrative Order (EPA Performed) OU 05 - PERIMETER GW 11/03/2009 05
Unilateral Administrative Order (EPA Performed) OU 05 - PERIMETER GW 09/20/2011 05
Removal (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 11/03/2009 05/24/2010 05
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 09/30/1989 02/15/2011 05
Record of Decision (EPA Performed) OU 05 - PERIMETER GW 02/15/2011 05
Remedial Design (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 09/20/2011 03/27/2014 05
Remedial Design (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 09/20/2011 08/21/2013 05
Remedial Design (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 09/20/2011 09/23/2013 05
Remedial Design (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 09/26/2011 03/08/2012 05
Remedial Design (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 09/26/2011 06/17/2015 05
Remedial Design (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 09/26/2011 10/01/2012 05
Remedial Design (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 09/26/2011 11/14/2012 05
Remedial Action (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 03/08/2012 09/26/2013 05
Remedial Action (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 10/01/2012 Estimated Dec 2019 - Feb 2020 05
Remedial Action (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 11/14/2012 07/23/2014 05
Remedial Action (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 08/21/2013 Estimated Dec 2019 - Feb 2020 05
Remedial Action (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 09/23/2013 Estimated Dec 2019 - Feb 2020 05
Remedial Action (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 03/27/2014 Estimated Nov 2020 - Jan 2021 05
Remedial Action (PRP Performed, EPA Oversight) OU 05 - PERIMETER GW 06/17/2015 Estimated Jan - Mar 2020 05
Long-Term Response Action OU 05 - PERIMETER GW Estimated Nov 2020 - Jan 2021 05
Unilateral Administrative Order (EPA Performed) OU 06 - BOUNDARY OU GW & SOIL 06/20/2018 06
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 06 - BOUNDARY OU GW & SOIL 09/30/1989 07/22/2015 06
Record of Decision (EPA Performed) OU 06 - BOUNDARY OU GW & SOIL 07/22/2015 06
Remedial Design (PRP Performed, EPA Oversight) OU 06 - BOUNDARY OU GW & SOIL 12/14/2015 Estimated Sep - Nov 2020 06
Remedial Action OU 06 - BOUNDARY OU GW & SOIL Estimated Sep - Nov 2020 06
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 07 - ISLANDS OU GW & SOIL 09/30/1989 07
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 08 - EASTERN OU GW & SOIL 09/30/1989 08
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 09 - CENTRAL OPERABLE UNIT 09/30/1989 09
Feasibility Study (PRP Performed, EPA Oversight) OU 10 - AREA 40 10/31/2016 Estimated Sep - Nov 2019 10
Record of Decision OU 10 - AREA 40 Estimated Mar - May 2020 10
Remedial Design OU 10 - AREA 40 Estimated May - Jul 2021 10
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 11 - VI INVESTIGATION 04/11/2017 11

*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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