The PORS O/O shall cause all gate valves in the PORS to be fully turned at least once every 12 months, timed to coincide with periods of minimum consumer usage.
N.H. Admin. Code § Env-Dw 1206.08
#9572, INTERIM, eff 10-21-09, EXPIRES: 4-19-10; ss by #9660, eff 2-24-10