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) Except as required by Env-Wq 1511.07 for solar arrays, 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. Admin. Code § 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.Amended by Number 41, Filed October 12, 2023, Proposed by #13758, Effective 9/28/2023, Expires 9/28/2033 (see Revision Note #4 at chapter heading for Env-Wq 1500).