Stormwater Permitting Rule Update

Updated 2/6/2019

The final proposed Stormwater Permitting Rule has been filed with the Legislative Committee for Administrative Rules (LCAR) for review at LCAR’s 2/14/2019 meeting.


Vermont DEC is developing a new Stormwater Permitting Rule. This rule will cover all Stormwater permitting programs, including operational and NPDES-based programs. Adoption of the rule, and associated general permits, are required by Act 64 (the Vermont Clean Water Act) and are an important component of the Lake Champlain TMDL Accountability Framework.

The public comment period on the proposed rule ended 10/1/2018.  The final proposed rule was submitted to the Legislative Committee for Administrative Rules (LCAR) for review at LCAR’s 2/14/2019 meeting.  LCAR will have 30 days to take action -vote- on the proposed rule.

Stormwater Permitting Rule As Submitted to LCAR on 1/8/2019

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 is repealing the existing 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, DEC is 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. The proposed rule includes standards applicable to this general permit, as well as all stormwater permitting. The Department will proceed to adopt the three-acre general permit once the rule is finalized.

DEC’s Stormwater Program welcomes your input on the proposed rule and forthcoming general permit. Questions or comments should be directed to Padraic Monks, Stormwater Program Manager, at or (802) 490-6169.

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