New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Wt - Wetlands Programs
Chapter Env-Wt 500 - PROJECT-SPECIFIC REQUIREMENTS
Part Env-Wt 523 - NON-TIDAL DREDGING
Section Env-Wt 523.04 - Classification of Dredging Projects

Universal Citation: NH Admin Rules Env-Wt 523.04

Current through Register No. 13, March 27, 2025

(a) Where not already exempt under RSA 482-A:3, IV, maintenance dredging associated with existing infrastructure, a previously constructed maintenance dredge project, or an active man-made pond, shall be a minimum impact project provided the proposed dredging of public waters does not exceed 20 CY and impacts less than 10,000 SF of wetland.

(b) A dredging project shall be a minor impact project if it otherwise meets the minimum impact criteria but:

(1) The area to be dredged will exceed the previously-permitted dredge area;

(2) The wetland-impacted dredge area is less than 10,000 SF in area;

(3) There are aquatic resource impacts based on time-of-year restrictions that require NHF&G authorization; or

(4) For public waters, the proposed dredging will be 20 CY or greater but no more than 30 CY.

(c) A dredging project shall be a major impact project if it:

(1) Is a new or unmaintained dredging project;

(2) Will have 10,000 SF or greater of wetlands impacts;

(3) Will dredge more than 30 CY in public waters; or

(4) Will be located in a PRA, except as provided in Env-Wt 407.

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