CFR › Title 40 › Part 60 › §60.304240 CFR §60.3042Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Use Equation 1 in § 60.3076 to calculate emissions at 7 percent oxygen.(b)Use Equation 2 in § 60.3076 to calculate the 12-hour rolling averages for concentrations of carbon monoxide.