N.H. Code Admin. R. Env-Wq 1506.10

Current through Register No. 25, June 20, 2024

Section Env-Wq 1506.10 - Sediment Control Methods: Temporary Sediment Trap

Temporary sediment traps shall comply with the following:

(a) The trap shall be installed as close to the disturbed area or source of sediment as possible;

(b) The maximum contributing drainage area to the trap shall be less than 5 acres;

(c) The minimum volume of the trap shall be 3,600 cubic feet of storage for each acre of drainage area;

(d) The side slopes of the trap shall be 3:1 or flatter, and shall be stabilized immediately after their construction;

(e) The outlet of the trap shall be a minimum of one foot below the crest of the trap and shall discharge to a stabilized area;

(f) The trap shall be cleaned when 50 percent of the original volume is filled; and

(g) The materials removed from the trap shall be properly disposed of and stabilized.

N.H. Code Admin. R. Env-Wq 1506.10

(See Revision Note #1 at chapter heading for Env-Wq 1500) #9343, eff 1-1-09

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