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Connecticut Statewide Rule

Connecticut Erosion and Sediment Control Plan Requirements

Heavy RestrictionsApplies statewide across Connecticut (2026)

Key Facts

Statute
Sec. 22a-325 to 329
Disturbance threshold
0.5 acre
Guideline document
2002 CT E&S Guidelines
Plan certification
Required pre-construction
Last verified: September 5, 2026Source: State of Connecticut

Summary

Conn. Gen. Stat. Sec. 22a-329 requires every municipality to adopt soil erosion and sediment control regulations consistent with state guidelines. Plans are required for development disturbing more than one-half acre statewide.

The regulations adopted by a municipality pursuant to sections 8-2 and 8-25, on and after July 1, 1985, shall require that: (1) Proper provision be made for soil erosion and sediment control; (2) a soil erosion and sediment control plan be submitted with any application for development when the disturbed area of such development is more than one-half acre; and (3) the municipality or the soil and water conservation district shall certify that the plan complies with regulations adopted pursuant to said sections.

Source: State of ConnecticutView official code

Full Breakdown

Connecticut law mandates that all municipalities adopt erosion and sediment control regulations meeting the standards in the state's 2002 Connecticut Guidelines for Soil Erosion and Sediment Control. Conn. Gen. Stat. Sec. 22a-325 through 22a-329 establish that any development activity disturbing one-half acre or more requires a certified soil erosion and sediment control plan reviewed by the local land use authority. Plans must include site description, sequence of operations, and best management practices. State Department of Energy and Environmental Protection (DEEP) supervises municipal compliance and the state guidelines control where local rules are silent.

Violations & Penalties

Violations carry stop-work orders and penalties under Sec. 22a-438, with civil fines up to $25,000 per day and required restoration of damaged resources.

Frequently Asked Questions

Does my small backyard project need an erosion control plan?
Projects disturbing less than half an acre do not require a formal certified plan under state law, though local wetland or stormwater rules may still apply and basic best practices are recommended.
Who reviews and approves the erosion control plan?
Municipal land use commissions, typically planning, zoning, or inland wetlands agencies, review and certify plans using the state guidelines as the minimum technical standard.

Sources

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