CFR > Title 40 > Chapter I > Subchapter C > Part 75 > Subpart D CFR > Title 40 > Chapter I > Subchapter C > Part 75 > Subpart D – Missing Data Substitution Procedures Current as of: 2024 | Check for updates | Other versions § 75.30 General provisions § 75.31 Initial missing data procedures § 75.32 Determination of monitor data availability for standard missing data procedures § 75.33 Standard missing data procedures for SO2, NOX, and flow rate § 75.34 Units with add-on emission controls § 75.35 Missing data procedures for CO2 § 75.36 Missing data procedures for heat input rate determinations § 75.37 Missing data procedures for moisture