Chapter 132A: Section 7 Rules and regulations; concessions; powers and duties of forest supervisors, park superintendents and laborers
...Forest supervisors, park superintendents and laborers employed by the division, while employed in state forests, state parks or reservations, including roads and highways, shall, within the limits of said forests, parks or reservations, except great ponds, have and exercise all the powers and duties of constables, except service of civil process, and of police officers, if so authorized in writing by the commissioner...
Chapter 132A: Section 7A Chief park ranger; park rangers; violations of environmental regulations; non-criminal disposition
The chief park ranger and park rangers appointed and employed by the department of environmental management, when appointed deputy environmental police officers, shall enforce all regulations promulgated pursuant to section four A of chapter twenty-one, and section seven of chapter one hundred and thirty-two A and section sixteen of chapter two hundred and seventy, shall search for lost or missing persons or department property, and shall assist the bureau of fire control in both suppression and detection of fires.
A park ranger who has been appointed as a deputy environmental police officer who observes any violation of regulations promulgated pursuant to said section four A of said chapter twenty-one, and said section seven of said chapter one hundred and thirty-two A, may request the offender to state his name and address. Whoever upon such request refuses to state his name and address may be arrested without a warrant and shall be punished by a fine of not less than fifty dollars and not more than one hundred dollars. Said ranger may, as alternative to instituting criminal proceedings, give to the offender a written notice to appear before the clerk of the district court having jurisdiction at any time during office hours within twenty-one days after the date of such violation. Said notice shall contain the name and address of the offender, offense charged, signature of the officer and option of the offender acknowledging that the notice has been received. The clerk of courts shall maintain a separate docket of all such notices to appear.