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A RCRA Corrective Action Agreement between U.S. EPA and GM was executed on March 20, 2001 and amended October 1, 2002, March 29, 2007, and May 9, 2008.

Dates in Agreement:

July 18, 2001 Current Conditions Report (submitted May 25, 2001)
January 30, 2005 Human Health Environmental Indicator Report (submitted January 27, 2005)
April 30, 2008 Groundwater Migration Environmental Indicator Report
December 31, 2008 Final Corrective Measures Proposal

An Administrative Order on Consent between the U.S. EPA Region V and GM became effective on July 31, 2003.

Dates in the AOC:

July 23, 2003 Parcel 22 Removal Action Work Plan (approved)
July 23, 2003 Upstream Parcel Removal Action Work Plan (approved)
August 14, 2003 Quality Assurance Project Plan (approved)
August 21, 2003 Site Source Control Work Plan (approved)
October 29, 2003
Downstream Parcels Removal Action Work Plan (approved)
90 Days Following Work Completion Final Report (to be submitted)