N.H. Code Admin. R. Env-A 2102.02
“Exhaust and ventilation system” means any system that removes and transports particulate matter from the point of generation to the ambient air.
Source. #8215, eff 11-24-04 (from Env-A 2103); ss by #10314, eff 4-23-13; ss by #13693, eff 7-22-23