Greenfield Environmental Multistate Trust LLC, Trustee of the Multistate Environmental Response Trust (Multistate Trust), is responsible for owning, investigating, cleaning up, and facilitating the safe reuse of hundreds of former Kerr-McGee Corporation and Tronox Incorporated sites in 31 states.
The Multistate Trust is a private, independent environmental response trust created as part of a bankruptcy settlement and dedicated to:
Protecting human health and the environment by addressing contamination at its sites;
Selling or transferring its sites to facilitate beneficial, community-supported reuses; and
Providing opportunities for meaningful community involvement.
This website is intended to make Multistate Trust information available to the public in a transparent and timely fashion. Please view our Multistate Trust 2023 Annual Progress Report.
The corporate parent and sole member of Greenfield Environmental Multistate Trust LLC (Multistate Trustee) is Greenfield Environmental Trust Group, Inc. (Greenfield). For more information, visit greenfieldenvironmental.com.
Upcoming and Recent Events
Environmental Justice Advisory Board Meeting - Oct 2024
The Multistate Trust’s Environmental Justice Advisory Board held its second meeting of 2024 on October 16 and 17 in Shreveport/Bossier City, LA. Board members, invited guests, and community leaders met to discuss community engagement, redevelopment planning, funding opportunities and challenges for community groups, and toured our Site in Bossier City. Find more information on our Environmental Justice page.
Upcoming and Recent Community Meetings
October 29, 2024:
The Multistate Trust is cohosting a community meeting and drop-in session about the Kerr-McGee Chemical Corp – Navassa Superfund Site in Navassa, NC. See the flyer for more info.
October 16, 2024:
The Multistate Trust cohosted a community drop-in session about the former Tronox/Kerr-McGee Facility in Bossier City, LA. See the flyer for more information.
September 19, 2024:
The Multistate Trust cohosted a community visioning workshop for the future of the Caselton Mine Area and Mill Site in Pioche, NV. See the flyer for more information.
July 30, 2024:
The Multistate Trust cohosted a community meeting and drop-in session for the former Tronox/Kerr-McGee Facility in Bossier City, LA. See the meeting presentation and recording.
June 27, 2024:
The Multistate Trust cohosted a community meeting for the Kerr-McGee Chemical Corp – Navassa Superfund Site in Navassa, NC. See the meeting presentation and recording.
June 11, 2024:
The Multistate Trust cohosted a community meeting and visioning workshop to discuss potential future uses of the Caselton Mine Area and Mill Site. See the flyer for more information.
April 30, 2024:
The Multistate Trust cohosted a drop-in information session to provide updates about the former Tronox/Kerr-McGee Wood Treatment Facility in Madison, IL. See the flyer for more information.
April 2, 2024:
The Multistate Trust cohosted a community meeting and drop-in session about the former Tronox/Kerr-McGee Facility in Bossier City, LA. See the meeting presentation and meeting recording.
March 14, 2024:
The Multistate Trust cohosted a community meeting and drop-in session to share updates about the former Tronox/Kerr-McGee Wood Treatment Facility in Springfield, MO. See our meeting presentation and the MDHSS presentation.
March 12, 2024:
The Multistate Trust cohosted a community meeting and drop-in session about the Kerr-McGee Chemical Corp – Navassa Superfund Site in Navassa, NC. See our meeting presentation.
January 31–February 1, 2024:
The Multistate Trust cohosted virtual community meetings and in-person drop-in information sessions to provide updates about the Kerr-McGee Superfund Site in Jacksonville, FL. See the meeting presentation.
Community meeting in Springfield, MO in August 23, 2023
Financial Information
Approved Budgets and Amendments
Approved 2024 budgets for Owned Funded Sites (OFSs) have been posted at Budgets.
Recent Financial Statements
Our 2023 3rd quarter financial statements for the Administrative Account and for the Owned Funded Sites have been posted at Financial Statements.
News and Announcements
Announcements and Press Releases
Stay up to date on recent developments at the Multistate Trust and our sites.
Cleanup of Contaminated Soil in OU2 Has Begun at Navassa Kerr-McGee Superfund Site
Visit our recently launched website for the Caselton Mine Area and Mill Site in Pioche, Nevada.
Multistate Trust in the News
See recent news coverage of Multistate Trust sites.
Cleanup of pollution from Springfield railroad tie facility moves into neighborhood, basin (Springfield, MO)
Kerr-McGee Superfund cleanup set for major step forward (Jacksonville, FL)
Navassa Superfund cleanup project to start January 2024 (Navassa, NC)
Part of Kerr-McGee could be gifted to city for storm shelter, recreation center (Columbus, MS)
Solar energy discussed during Caselton Mine and Mill site cleanup tour (Caselton Mine, NV)
Community meetings set for Bossier City neighborhood site cleanup (Bossier City, LA)
Greenfield Environmental Trust Map
A Map of Greenfield Environmental Trust Sites
As the professional service provider to the court-appointed trustees of multiple environmental and custodial trusts, including the Multistate Trust, Greenfield Environmental Trust Group, Inc. owns, cleans up, and facilitates responsible reuse of hundreds of contaminated sites nationwide.
These properties range from former chemical, petroleum, and manufacturing facilities, historic wood treatment sites, mine-scarred lands, and service station sites. This map depicts the locations of some of the sites that Greenfield owns as a trustee.