New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Wt - Wetlands Programs
Chapter Env-Wt 300 - PERMITS AND OTHER AUTHORIZATIONS; CONDITIONS APPLICABLE TO ALL WORK IN JURISDICTIONAL AREAS
Part Env-Wt 307 - CONDITIONS APPLICABLE TO ALL ACTIVITIES IN JURISDICTIONAL AREAS
Section Env-Wt 307.15 - Use of Heavy Equipment in Wetlands

Universal Citation: NH Admin Rules Env-Wt 307.15

Current through Register No. 13, March 27, 2025

In addition to all other applicable conditions in this part or in Env-Wt 500 or Env-Wt 600, the following conditions shall apply to the use of heavy equipment in wetlands:

(a) Heavy equipment shall not be operated in any jurisdictional area unless specifically authorized in the permit for the project;

(b) Mobile heavy equipment working in wetlands shall not be stored, maintained, or repaired in wetlands, except that repairing or refueling in a wetland is allowed if equipment cannot practicably be removed and secondary containment is provided;

(1) Either have low ground pressure, namely less than 4 psi, or not be located directly on wetland soils and vegetation; or

(2) Be placed on timber or swamp mats that are adequate to support the equipment in such a way as to minimize disturbance of wetland soil and vegetation;

(d) Timber and swamp mats shall be:

(1) In good condition to ensure proper installation, use, and removal; and

(2) Thoroughly cleaned before re-use; and

(e) Swamp mats shall:

(1) Be placed in the wetland from the upland or from equipment positioned on swamp mats if working within a wetland;

(2) Be installed, used, and removed so as to minimize impacts to wetland areas; and

(3) Be installed with adequate erosion and sediment controls at approaches to the mats to promote a smooth transition to, and minimize sediment tracking onto, the mats.

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