"Treatment plant" means "wastewater treatment plant" as defined by RSA 485-A: XVI-a, as reprinted in Appendix B.
N.H. Admin. Code § Env-Wq 1202.73
#8235, eff 12-22-04 (See Revision Note at chapter heading for Env-Wq 1200) (formerly Env-Ws 1202.73); ss by #9798-A, eff 10-9-10 (from Env-Wq 1202.72)