N.H. Admin. Code § Env-Wt 514.03

Current through Register No. 50, December 12, 2024
Section Env-Wt 514.03 - Application Requirements for All Bank/Shoreline Stabilization Projects

The project-specific information required by Env-Wt 310.01(c)(1) or Env-Wt 311.03(b)(11), as applicable, for a bank/shoreline stabilization project shall be as follows:

(a) A narrative and photos that:
(1) Describe and illustrate existing conditions and locations where shoreline vegetation currently exists;
(2) Identify all known causes of erosion to the bank/shoreline in that location;
(3) Identify information and, for minor and major projects, engineering standards used to determine the appropriateness of the proposed bank stabilization treatment or practice;
(4) Explain the design elements that have been incorporated to address erosion, by eliminating or minimizing the causes therefor; and
(5) For minor and major bank/shoreline stabilization projects or minimum impact bioengineering stream bank projects, identify the flood risk tolerance of the proposed treatment or practice using the appropriate technical guidance or national engineering handbook;
(b) A cross-section plan that shows:
(1) The difference in elevation between the lowest point of the bank/shoreline slope to be impacted by the construction and the highest point of the bank/shoreline slope to be impacted;
(2) The linear distance across the proposed project area as measured along a straight line between the highest and lowest point of the bank/shoreline slope to be impacted;
(3) The existing and proposed slope of the bank/shoreline; and
(4) The normal high water line or ordinary high water mark, as applicable;
(c) Hard-scape, rip-rap, or unnatural design plans shall include:
(1) Designation of minimum and maximum stone size;
(2) Gradation;
(3) Minimum rip-rap thickness;
(4) Type of bedding for stone;
(5) Cross-section and plan views of the proposed installation;
(6) A description of anticipated turbulence, flows, restricted space, or similar factors that would render vegetation and bioengineering stabilization methods physically impracticable;
(7) Engineering plans for rip-rap in excess of 100 LF along the bank or bed of a watercourse, including in-stream revetments, stamped by a professional engineer; and
(8) If the project proposes rip-rap adjacent to great ponds or other surface waters where the state holds fee simple ownership to the bed, a stamped surveyed plan showing the location of the normal high water line and the footprint of the proposed project; and
(d) Design plans for a wall shall include:
(1) Cross-section and plan views of the proposed installation and sufficient plans to clearly indicate:
a. The relationship of the project to fixed points of reference, abutting properties, and features of the natural shoreline; and
b. The dimensions of the existing wall, if any, and of the proposed wall; and
(2) If the application is for a wall adjacent to a great pond or other surface water where the state holds fee simple ownership to the bed, a surveyed plan, stamped by a licensed land surveyor, showing the location of the normal high water line and the footprint of the proposed project.

N.H. Admin. Code § Env-Wt 514.03

Derived from Volume XXXIX Number 28, Filed July 11, 2019, Proposed by #12805, Effective 12/15/2019, Expires 12/15/2029.
Amended by Volume XL Number 2, Filed January 9, 2020, Proposed by #12953, Effective 12/24/2019, Expires 12/24/2029.