1. (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.

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

   1. (1) The area to be dredged will exceed the previously-permitted dredge area;
   2. (2) The wetland-impacted dredge area is less than 10,000 SF in area;
   3. (3) There are aquatic resource impacts based on time-of-year restrictions that require NHF&G authorization; or
   4. (4) For public waters, the proposed dredging will be 20 CY or greater but no more than 30 CY.

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

   1. (1) Is a new or unmaintained dredging project;
   2. (2) Will have 10,000 SF or greater of wetlands impacts;
   3. (3) Will dredge more than 30 CY in public waters; or
   4. (4) Will be located in a PRA, except as provided in Env-Wt 407.

Source. #12805, eff 12-15-19; amd by #13124, eff 10-23-20