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Ch. 22 Stormwater Permitting Rule

Updated 2/08/2024

The final proposed Stormwater Permitting Rule was approved by the Legislative Committee for Administrative Rules (LCAR) on 2/14/2019.  The final adopted rule was filed on 2/25/19 and went into effect on 3/15/19.

Stormwater Permitting Rule – Final Adopted

Public Comment Response Summary

Summary of Rule Changes

LCAR Forms

Ch. 22 Strikethrough

ICAR Minutes

Repeal of Ch. 18 Stormwater Management Rule

Concurrent with the adoption of the Ch. 22 Stormwater Permitting Rule, the Department repealed the Ch. 18 Stormwater Management Rule.

Ch. 18 Materials Provided to LCAR

Ch. 18 LCAR Forms

Ch. 18 Strikethrough

Ch. 18 ICAR Minutes

The “Three-Acre General Permit”

In addition to adopting a new rule, the DEC was required to adopt a general permit for stormwater from so-called “three-acre sites” -existing sites with three or more acres of impervious surface that lack a stormwater permit based on the 2002 Stormwater Management Manual. Once the Ch. 22 Stormwater Permitting Rule was finalized, the DEC adopted General Permit 3-9050, which went into effect on December 1, 2020. The Ch. 22 Stormwater Permitting Rule includes standards applicable to this general permit, as well as all stormwater permitting.

DEC’s Stormwater Program welcomes your input on the Ch. 22 Stormwater Permitting Rule and General Permit 3-9050. Questions or comments should be directed to Kevin Burke, Stormwater Program Manager, at or (802) 261-7903.