Reducing Methane (CH4) Emissions from Natural Gas Distribution Mains & Services (310 CMR 7.73)

MassDEP has imposed annually-declining methane (CH4) emission limits on Massachusetts gas operators in 2018, 2019, and 2020 under the Global Warming Solutions Act.

Regulatory Requirements

310 CMR 7.73 requires each gas operator with a Gas System Enhancement Plan (GSEP) order from the Massachusetts Department of Public Utilities (DPU) to annually report emissions from the total miles of mains and service pipelines by material type. GSEPs detail schedules for replacement of older leak-prone distribution system pipes for each gas operator.

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Annual Reporting

Gas operators are required to submit the form and spreadsheet below to MassDEP by April 15 of each year for the previous calendar year. Completed documents (or requests for these materials in alternate formats) should be emailed to Sue Ann Richardson.

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