"Public agencies", any city, town, county, district, or other political subdivision, authority, public corporation, board or commission of the commonwealth; the commonwealth or any agency or department thereof; any such agency, department, political subdivision or entity in a state adjoining the commonwealth; any interstate agency; the United States government and any department or agency thereof.
"Purposes of this section", the purposes set forth in clauses (1) to (24), inclusive, of section two, and any similar and compatible purposes related to the management, protection, and enhancement of natural resources and the environment.
"Region", any geographically-described area within which the powers and duties provided in a joint powers agreement will be exercised.
"Joint powers agreement", a document specifying the terms and conditions of the joint exercise of powers and duties entered into by participating public agencies pursuant to the laws governing any such agency, the provisions of this section, and such procedural regulations as the secretary of environmental affairs may promulgate.
Following a public hearing in the specified region, and upon a written finding that the proposed agreement meets the requirements of this section, the secretary may approve the agreement. The secretary shall file a copy of such approval, with a copy of the agreement, with the clerks of the senate and the house of representatives and with the state secretary. Any proposed agreement not disapproved within forty-five days after said public hearing shall be deemed to have been approved. Agreements may be modified by the secretary and may be extended for additional terms, but in no event shall a joint powers agreement be in existence for more than five years without express statutory approval.
Mass. Gen. Laws ch. 21A, § 20