Skip navigation.

Earth Pledge

The Guardian Trust

The Guardian Trust is a public/private partnership, providing long-term stewardship of environmentally contaminated properties, to protect human health and the environment and to facilitate sustainable redevelopment.


The Guardian Trust is an essential component of any risk-based exit strategy. The Trust provides effective post-closure oversight of remediated sites, ensuring the long-term integrity of land use and engineering controls and promoting the safe redevelopment of brownfields and superfund sites that require risk-based cleanups. The Trust provides these stewardship services to the public and private sectors, federal and state regulators, and local governments and communities.

Guardian Trust Management Services, LLC, an affiliate of MGP Environmental Partners LLC, provides management of the day-to-day operations of The Guardian Trust. Earth Pledge, a non-profit organization dedicated to providing programs that foster a sustainable environment, is the sponsor of the Guardian Trust.