Section Env-Wt 903.03 - Information Required for a Stream Crossing SPN, LSA, or EXP In addition to the information required in Env-Wt 300, the applicant shall submit the following for any stream crossing project that is subject to an SPN, LSA, or EXP:
(a) A USGS map or updated elevation data based on LiDAR on which the following are clearly delineated or otherwise noted:(1) The approximate boundaries of the contributing watershed;(2) The size of the contributing watershed; and(3) Identification of the stream tier based on watershed size;(b) Plans that show the following: (1) The scale of the plan and a north arrow;(2) The extent of disturbance;(3) Road locations, including road edges, centerline, and boundaries of the right-of-way; (4) Proposed channel work including bank erosion control features, grade control, and channel linings; and(5) All dimensions of the proposed structure and of the existing structure, if any, including inlet and outlet invert elevations;(c) The hydraulic capacity of the proposed crossing, in terms of flood frequency event, and of the existing crossing, if any;(d) The type of crossing, such as a culvert or span, that is proposed and that exists, if any;(e) The following information about the dewatering system proposed to be used:(1) Estimated maximum flow anticipated during construction;(2) The location, height, and width of the diversion dam;(3) The location and capacity of each sump; and(4) Backwater prevention method; and(f) The following information about erosion and pollution controls:(1) The sediment treatment plan, including methods, release point(s), and extent;(2) Any additional methods proposed to control erosion; and(3) All methods of preventing and controlling releases from pumps, fuel stations, and equipment storage.N.H. Code Admin. R. Env-Wt 903.03
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.