N.H. Admin. Code § Env-Ws 901.04
#1774, eff 7-15-81; ss by #2352, eff 4-26-83; ss by #2851, eff 9-21-84, EXPIRED: 9-21-90
New. #6326, INTERIM, eff 9-3-96, EXPIRED: 1-1-97
New. #6502, eff 4-25-97; ss and moved by #8327, eff 4-23-05 (from Env-Ws 901.03 )