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Noise Suppression Plan
Noise levels from a range of activities in Montgomery County are regulated by the County's Noise Ordinance. In some cases, the noise limits for construction activities may be increased with the approval of a Noise Suppression Plan by the Department of Environmental Protection (DEP). Construction activities may create noise up to 85 decibels from 7 a.m. to 5 p.m. weekdays if they are operating under a DEP approved Noise Suppression Plan.

For a copy of Noise Suppression Plan guidelines, please contact Steve Martin at 240-777-7746 or by e-mail at steve.martin@montgomerycountymd.gov. Please refer to the link below for more information on noise from construction activities and Noise Suppression Plans.

For inquiries requiring the response of a DEP investigator, you will typically be contacted within 3 days although resolution of the issue may take longer depending on the circumstances of the case.

Find more information from the following link(s):
  • Noise from Construction


  • To speak with a Customer Service Representative, please call 311 during business hours.