"Conventional pipe and stone system" means an ISDS in which effluent is dispersed through small-diameter pipe that is perforated only on the lower half and that lies within a layer of septic stone.
N.H. Admin. Code § Env-Wq 1002.15
(See Revision Note at chapter heading for Env-Wq 1000) #9086, eff 2-9-08; ss by #9904-A, eff 4-16-11