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Maine DEP explains site law triggers, 'magic number' of one acre and 'no adverse effect' standard
Summary
At a Municipal Planning Assistance webinar, DEP senior environmental engineer Kareem Gungor explained how Maine's site location of development act and stormwater law apply: a one‑acre disturbance often triggers permitting, structures over three acres or large subdivisions require site‑law review, and projects must demonstrate 'no adverse effect' on natural resources.
Kareem Gungor, senior environmental engineer with the Maine Department of Environmental Protection’s Bureau of Land Resources, told attendees at a Municipal Planning Assistance webinar that permitting typically begins at “the magic number of 1 acre of soil disturbance.” Gungor said that disturbing one acre or more generally triggers federal and state requirements — a construction general permit (MCGP) under the Clean Water Act and at minimum a stormwater permit‑by‑rule (SWPBR) or a full stormwater permit.
The explanation focused on how stormwater law and the Site Location of Development Act (commonly called site law) intersect. Gungor said site law requires developments to produce “no adverse effect on the natural environment,”…
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