Section Env-Wt 904.04 - Tier 2 Stream Crossings(a) A tier 2 stream crossing shall be a crossing located on a watercourse where the contributing watershed is greater than 200 acres and less than 640 acres.(b) Subject to (c), below, any new tier 2 stream crossing and any replacement tier 2 stream crossing that does not meet the criteria specified for replacement in Env-Wt 904.08 shall be a span structure, pipe arch embedded with stream simulation, open-bottom culvert with stream simulation, or closed-bottom culvert embedded with stream simulation.(c) The applicant may propose an alternative design for a new tier 2 stream crossing by submitting a request as specified in Env-Wt 904.10.(d) Compensatory mitigation shall not be required for: (1) Any new tier 2 stream crossing that meets the requirements of this section and Env-Wt 904.07;(2) Any tier 2 stream crossing that is self-mitigating; or(3) Any tier 2 stream crossing that is repaired, rehabilitated, or replaced pursuant to Env-Wt 904.08.(e) Plans for a tier 2 stream crossing shall be dated and bear the signature and seal of the professional engineer who prepared or had responsibility for and approved them, as required by RSA 310-A:18.N.H. Code Admin. R. Env-Wt 904.04
Amended by Volume XXXVIII Number 32, Filed August 9, 2018, Proposed by #12578, Effective 7/21/2018, Expires 7/21/2028.Amended by Volume XXXIX Number 28, Filed July 11, 2019, Proposed by #12809, Effective 12/15/2019, Expires 12/15/2029.Amended by Volume XL Number 46, Filed November 12, 2020, Proposed by #13124, Effective 10/23/2020, Expires 10/23/2030.