N.H. Code Admin. R. Env-Wq 1002.77
“Trench system” means an ISDS in which the effluent conduits are separated by a vertical barrier of soil.
Source. (See Revision Notes #1 and #2 at chapter heading for Env-Wq 1000) #11184, eff 10-1-16; ss by #14486, eff 2-1-26, EXPIRES: 2-1-36 (formerly Env-Wq 1002.75)