N.J. Admin. Code § 7:13-9.3

Current through Register Vol. 56, No. 24, December 18, 2024

Section 7:13-9.3 - General permit 3-scour protection activities at bridges and culverts

(a) General permit 3 authorizes scour protection activities at one or more existing bridges or culverts, provided the conditions at N.J.A.C. 7:13-6.7 are met and:

1. The activities are necessary for the maintenance and/or protection of an existing bridge or culvert;

2. The activities are intended to remedy a scour problem within or adjacent to a bridge or culvert and not to remedy large sections of severely eroded or unstable channel;

3. The applicant provides an engineering certification confirming that:

i. The amount of stabilizing material to be placed in the channel is no greater than necessary to protect the structure from failure or collapse due to undermining of abutments or piers. In general, the channel velocity used to determine the necessary amount of stabilizing material shall be based on bank full flow, unless otherwise required by the U.S. Federal Highway Administration; and

ii. The stabilizing material does not obstruct flow in the channel or floodway or cause flooding outside the channel to increase;

4. The stabilizing material consists of native substrate, or is buried beneath at least two feet of native substrate, where placement of the native substrate is feasible and effective in stabilizing the channel and protecting aquatic habitat under expected flood conditions;

5. The activities do not disturb the channel bank or the riparian zone, unless such disturbance is unavoidable, necessary to gain access to the channel, and minimized. If access to the channel results in topographic changes to the bank, such as ruts from trucks or other machinery, the grade of the bank shall be restored to its pre-construction topography;

6. The project is conducted from only one bank, where possible, and the existing tree canopy on the more southerly or westerly bank is preserved in order to shade the regulated water; and

7. The timing restrictions set forth at N.J.A.C. 7:13-11.5(d) are observed.

N.J. Admin. Code § 7:13-9.3

Adopted by 48 N.J.R. 1067(a), effective 6/20/2016