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Regulation 310 CMR 7.00: Air Pollution Control

These regulations establish emission limits, pollution control standards, and permit requirements for a range of facilities and activities. MassDEP implements these rules to prevent and control air pollution where it originates. This ensures abundant clean air for Massachusetts residents, workers, and visitors.

Table of Contents

Current Regulations

These regulations were last amended in March 2021 (Prohibition on Certain Hydrofluorocarbons, Reducing Methane from Natural Gas Distribution emergency regulations). MassDEP has proposed additional amendments.

310 CMR 7.00: Air Pollution Control

Note: This is an unofficial version of Commonwealth regulations and is posted here for the convenience of the public. It is not an official statement of the regulations.

Proposed Amendments & Public Comment

December 2021

July 2021

Recently Promulgated Amendments