Where:
Cadj = pollutant concentration adjusted to 7 percent oxygen
Cmeas = pollutant concentration measured on a dry basis
(20.9-7) = 20.9 percent oxygen-7 percent oxygen (defined oxygen correction basis)
20.9 = oxygen concentration in air, percent
%O2 = oxygen concentration measured on a dry basis, percent
Where:
Ea = Average carbon monoxide pollutant rate for the 12-hour period, ppm corrected to 7 percent O2.
Ehj = Hourly arithmetic average pollutant rate for hour "j," ppm corrected to 7 percent O2.
40 C.F.R. §60.3076