New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Wq - Water Quality and Quantity Programs
Chapter Env-Wq 1000 - SUBDIVISIONS; INDIVIDUAL SEWAGE DISPOSAL SYSTEMS
Part Env-Wq 1017 - EFFLUENT CONDUITS
Section Env-Wq 1017.02 - Concrete Chambers
Universal Citation: NH Admin Rules Env-Wq 1017.02
Current through Register No. 13, March 27, 2025
(a) Each bed that includes concrete chambers shall be constructed on a 6 inch level layer of:
(1) Medium to coarse textured sand, with an
effective size of 0.25 to 2.0 mm, no greater than 5% passing the number 200
sieve, and no particles larger than 3/4 inch; or
(2) Materials meeting the ASTM C-33
specification.
(b) Filter fabric or galvanized wire mesh shall be placed around the chambers prior to placing the septic stone.
(c) The pipe conveying effluent from the septic tank to the bed shall empty into either a velocity reducing pit, a splash plate, or internal distribution system.
(See Revision Note at chapter heading for Env-Wq 1000) #9086, eff 2-9-08
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