"Biochemical oxygen demand (BOD5)" means the amount of oxygen used by microorganisms in the biochemical oxidation of decomposable organic matter under aerobic conditions over a 5-day period, as expressed in milligrams per liter (mg/L).
N.H. Admin. Code § Env-Wq 702.03
(See Revision Note at chapter heading for Env-Wq 700) #8590, eff 3-25-06