Declaration of Cooperation signing event, December 10, 2010.

In the fall OF 2009, Oregon Solutions facilitated a process, involving many potential stakeholders -- to work build a framework for a multi-agency agreement.

That process culminated on December 10, 2010, with the signing of a Gateway Green Declaration of Cooperation, in which each of 22 organization/agency stated explicitly what it will do to help make the project a reality.

Among other things, the group agreed that, once built, the City of Portland will be the lead agency but the project will be governed by a Consortium Agreement between Portland Parks & Recreation and several other key stakeholders -- a group to be called the Gateway Green Governing Group (4G).

Subsequent work led to the signing, in February 2012, of a Memorandum of Understanding (MOU) between Oregon Department of Transportation (ODOT) and Portland Parks & Recreation (PP&R), outlining the terms and process to be completed in order to transfer the land.

The Declaration of Cooperation was updated in 2012, with forty organizations signing the updated document, each making a specific commitment of what they would do to help create the new park.