N.J. Admin. Code § 7:7-6.8

Current through Register Vol. 56, No. 21, November 4, 2024

Section 7:7-6.8 - General permit 8 - construction of gabions at a single family/duplex lot

(a) This general permit authorizes the construction of gabions at a single-family home or duplex lot that is not part of a larger development owned or controlled by the same property owner and which has an eroding shoreline along any shore other than the Atlantic Ocean, Delaware Bay, Raritan Bay, or Sandy Hook Bay. (General permit 7 - construction of revetments at a single-family home is found at 7:7-6.7.)

(b) The design and construction of the gabions shall comply with the following:

1. The gabions shall be laid along the face of the shore such that the waterward slope of the gabions, as measured along the face of the gabions, shall be no steeper than one vertical to two horizontal. However, if the steepness and height of the slope of the non-storm shoreline profile preclude construction of a sloped gabion system, then the waterward slope of a step faced gabion system, as measured along a line connecting the gabions shall be no steeper than one vertical to one horizontal;

2. The placement of the gabions in the waterway shall be limited to that necessary to protect the shore;

3. The toe of the gabions shall be located at least three feet below existing grade to prevent undercutting;

4. Rip rap shall be placed along the waterward toe of the gabion only if the Department determines that such rip-rap is required to limit scour potential and the areas and volume of rip rap are minimized;

5. Placement of gabions on dunes or in wetlands is prohibited. Any wetlands disturbed by the construction activities shall be restored to pre-construction conditions;

6. The gabions shall be placed in such a way as to not result in instability of a coastal bluff or cause erosion of adjacent properties or offshore areas;

7. The gabions shall be tightly packed with four inch to eight inch diameter stone (to minimize movement of the interior stone and consequent damage to the wire) and the edges shall be laced together with steel wire;

8. Individual gabions shall be wired together;

9. The size and number of gabions shall be determined by a design engineer based on wave height range for the site; and

10. Fill material placed to achieve the required slope shall be:

i. Added only to the upland;

ii. Free of large stones; and

iii. Firmly compacted before construction of the gabions begins.

(c) Public access shall be provided in accordance with the public trust rights rule, 7:7-9.48, and the public access rule, 7:7-16.9.

N.J. Admin. Code § 7:7-6.8

Renumbered from 7:7-7.12 by 47 N.J.R. 1392(a), effective 7/6/2015