Ccorr = Cmeas * (21-X/21-Y)
Where:
Ccorr = the concentration corrected for oxygen.
Cmeas = the 12-hour average of the measured concentrations uncorrected for oxygen.
X = the volumetric oxygen concentration in percentage to be corrected to (8 percent for recovery furnaces and 10 percent for lime kilns, incinerators, or other devices).
Y = the 12-hour average of the measured volumetric oxygen concentration.
40 C.F.R. §60.284a