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Working group weighs how to trigger stormwater review: cubic-yard thresholds or changes to grading and water flow
Summary
Needham drafters debated numeric land‑disturbance triggers (750 or 250 cubic yards, 4,000 sq ft impervious) versus an objective standard that would require review whenever grading or site work would increase surface runoff onto neighbors, public drainage or natural resources.
Members of the Stormwater Bylaw Working Group spent extended time debating the threshold that should trigger review and approval under the proposed bylaw. The group considered existing numeric triggers (for example, 750 cubic yards of fill, proposed reduction to 250 cubic yards, and a 4,000-square-foot impervious-area threshold used elsewhere) and an alternative approach that would trigger review any time grading or other activity changes existing surface water flow so that additional water would be shed onto neighboring properties, public…
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