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 or the calculated volume of runoff from a 2-year, 24-hour storm;
- (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% of the original volume is filled; and
- (g) The materials removed from the trap shall be properly disposed of and stabilized.
Source. #9343, eff 1-1-09; ss by #12342, eff 8-15-17; ss by #13758, eff 9-28-23; ss by #14472, eff 1-19-26, EXPIRES: 1-19-36