N.H. Code Admin. R. Env-Wq 1508.15

Current through Register No. 25, June 20, 2024

Section Env-Wq 1508.15 - Pretreatment Practices: Deep Sump Catch Basins

Deep sump catch basins shall comply with the following:

(a) The contributing area shall not exceed 0.25 acres of impervious area;

(b) The distance from the bottom of the outlet pipe to the bottom of the catch basin shall be at least 4 feet;

(c) The diameter of the catch basin shall be at least 4 feet; and

(d) A hooded outlet pipe shall be provided that extends at least one foot below the bottom of the outlet pipe.

N.H. Code Admin. R. Env-Wq 1508.15

(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) amd by #9817-A, eff 12-1-10

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