"Chamber system" means an ISDS in which effluent is dispersed through preformed, interconnected, open bottom units, called chambers, that also provide effluent storage space and mechanical support for the soil overburden.
N.H. Admin. Code § Env-Wq 1002.10
(See Revision Note at chapter heading for Env-Wq 1000) #9086, eff 2-9-08