Framingham, MA Environmental Rules: Erosion Control (2026)

Framingham Zoning Code § 435-33B(1) triggers LDSM review for any project disturbing an acre or more of land, disturbance that is part of a larger common plan reaching an acre, clearing 50% or more of a lot's trees, or work on or within 30 feet of a moderate slope. Once triggered, § 435-33C(1)(f) specifically bans the use of hay bales for erosion and sediment control, requiring instead that erosion and sediment controls match the City's construction standards. Section 435-33D(3) then splits the standard by phase: during construction, temporary erosion and sedimentation control measures must be employed under the approved plan and best management practices (BMPs) until a disturbed area is permanently stabilized, and permanent erosion control and vegetative measures afterward must follow BMP and low-impact-development (LID) techniques.

The Planning Board serves as the special permit granting authority under § 435-33B(4), and applicants must submit LDSM documentation per § 525-24 of the Planning Board Rules. Financial security backs the standard: § 435-33E(2) requires a construction performance bond of $5,000 or 20% of the expected BMP value, whichever is greater, before a building permit issues, held by the Planning Board until a certificate of occupancy is granted by Inspectional Services. Certain routine activities, such as single-family lawn maintenance under 50 cubic yards of fill or fencing that does not alter drainage, are exempt under § 435-33B(2).