N.H. Code Admin. R. Env-Wq 1506.11

Current through Register No. 25, June 20, 2024

Section Env-Wq 1506.11 - Sediment Control Methods: Construction Dewatering

Dewatering shall comply with the following:

(a) The discharge shall be stopped immediately if the receiving area shows any sign of instability or erosion;

(b) All channels, swales, and ditches dug for discharging water from the excavated area shall be stable prior to directing discharge to them;

(c) If a construction equipment bucket is used, it shall empty the material to a stable area;

(d) No dewatering shall occur during periods of intense, heavy rain;

(e) Flow to the sediment removal structure shall not exceed the structure's capacity to settle and filter flow or its volume capacity; and

(f) Wherever possible, the discharge from the sediment removal structure shall drain to a well-vegetated buffer by sheet flow while maximizing the distance to the nearest water resource and minimizing the slope of the buffer area.

N.H. Code Admin. R. Env-Wq 1506.11

(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.