"Shutdown" for the purposes of Env-A 3100 means "shutdown" as defined in the US EPA's proposed Model Open Market Trading Rule (60 FR 39668, August 3, 1995), namely, "the permanent cessation of the activity that results in emissions at all or part of a source, excluding scrappage of mobile sources."
N.H. Admin. Code § Env-A 3102.30
#6441, EXEMPT, eff 1-21-97