N.H. Admin. Code § Env-Wq 1504.15

Current through Register No. 44, October 31, 2024

Section Env-Wq 1504.15 - Erosion Control Notes

(a) The plans shall include the following erosion control notes:

"-Perimeter controls must be installed prior to earth moving operations.

-Stormwater treatment ponds and drainage swales must be installed before rough grading the site.

-Runoff must be directed to temporary practices until stormwater BMPs are stabilized.

-Basins, ditches and swales must be stabilized prior to directing runoff to them.

-Roadways and parking areas must be stabilized within 72 hours of achieving finished grade.

-Cut and fill slopes must be stabilized within 72 hours of achieving finished grade.

-All areas of unstabilized soil must be stabilized as soon as practicable but no later than 45 days after initial disturbance.

-Erosion control practices must be inspected at least weekly and after every rain event of 0.5 inch or more.

-In areas that will not be paved, "stable" means that:

a. A minimum of 85% vegetative cover has been established;

b. A minimum of 3 inches of non-erosive material such as stone or riprap has been installed; or

c. Erosion control blankets have been installed in accordance with Env-Wq 1506.03.

-In areas to be paved, "stable" means that base course gravels meeting the requirements of NHDOT Standard for Road and Bridge Construction, 2016, Item 304.2 have been installed."

(b) Unless a larger area is allowed under Env-Wq 1505.03(c), the plan shall include the following:

"- No more than 5 acres shall be disturbed (not stabilized) at any time."

(c) The plans also shall include:

(1) Specifications for temporary and permanent seeding; and

(2) If applicable, winter construction notes that reflect the requirements of Env-Wq 1505.06.

(d) Erosion control notes for solar arrays shall also include the notes required by Env-Wq 1511.10.

(e) When in conflict with the notes in this section, the notes of Env-Wq 1511.10 shall apply for solar arrays.

N.H. Admin. Code § Env-Wq 1504.15

(See Revision Note #1 at chapter heading for Env-Wq 1500) #9343, eff 1-1-09; (See Revision Note #2 at chapter heading for Env-Wq 1500) renumbered by #9817-A (formerly Env-Wq 1504.14)

Amended by Volume XXXVII Number 32, Filed August 10, 2017, Proposed by #12342, Effective 8/15/2017, Expires 8/15/2027.

Amended by Number 41, Filed October 12, 2023, Proposed by #13758, Effective 9/28/2023, Expires 9/28/2033 (formerly Env-Wq 1504.16) (see Revision Note #4 at chapter heading for Env-Wq 1500).