New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Wq - Water Quality and Quantity Programs
Chapter Env-Wq 1500 - ALTERATION OF TERRAIN
Part Env-Wq 1508 - PERMANENT METHODS FOR PROTECTING WATER QUALITY
Section Env-Wq 1508.05 - Stormwater Treatment Practices: Gravel Wetlands

Universal Citation: NH Admin Rules Env-Wq 1508.05

Current through Register No. 13, March 27, 2025

If a gravel wetland is used, the system shall be designed in accordance with "UNHSC Subsurface Gravel Wetland Design Specifications", January 2022, available as noted in Appendix B, with the stipulation that the system shall have:

(a) A sediment forebay as specified in Env-Wq 1508.12; and

(b) Two treatment bays, each of which is designed to filter at least 45% of the WQV.

(See Revision Note #1 at chapter heading for Env-Wq 1500) #9343, eff 1-1-09; (See Revision Note #2 at chapter heading for Env-Wq 1500) amd by #9817-A, eff 12-1-10

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