N.H. Admin. Code § Env-A 612.02
#1710, eff 1-19-81; ss by #1864, eff 11-16-81; ss by #2332, eff 4-29-83; ss by #2938, eff 12-27-84; ss by #5033, eff 12-27-90; ss by #6057-B, eff 6-30-95; ss by #7483, eff4-26-01; ss by #7879, eff 4-26-03; ss by #9706, INTERIM, eff 4-26-11, EXPIRES: 10-24-11; ss by #10000, eff 10-1011; ss by #10175, eff 9-1-12