Where:
CFWA = Flow-weighted average concentration of all process vents.
n = Number of process vents.
Fi = Flow rate from process vent i in dry standard cubic feet per minute, as measured during the most recent compliance test.
Ci = Concentration of lead in process vent i, as measured during the most recent compliance test.
Where:
CEL = Flow-weighted average emissions limit (concentration) of combined furnace vents.
n = Number of furnace vents.
Fi = Flow rate from furnace vent i in dry standard cubic feet per minute.
CEli = Emissions limit (concentration) of pollutant in furnace vent i as specified in Table 2 of this subpart.
40 C.F.R. §63.543