Texas Administrative Code
Title 30 - ENVIRONMENTAL QUALITY
Part 1 - TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
Chapter 113 - STANDARDS OF PERFORMANCE FOR HAZARDOUS AIR POLLUTANTS AND FOR DESIGNATED FACILITIES AND POLLUTANTS
Subchapter D - DESIGNATED FACILITIES AND POLLUTANTS
Division 3 - EMISSION GUIDELINES AND COMPLIANCE TIMES FOR SMALL MUNICIPAL WASTE COMBUSTION UNITS CONSTRUCTED ON OR BEFORE AUGUST 30, 1999
Section 113.2133 - What must I do if I choose to monitor carbon dioxide instead of oxygen as a diluent gas?
Current through Reg. 50, No. 13; March 28, 2025
You must establish the relationship between oxygen and carbon dioxide during the initial evaluation of your continuous emission monitoring systems. You may reestablish the relationship during annual evaluations. To establish the relationship use three procedures:
(1) Use United States Environmental Protection Agency (EPA) Reference Method 3A or 3B in 40 Code of Federal Regulations (CFR) Part 60, Appendix A to determine oxygen concentration at the location of your carbon dioxide monitor.
(2) Conduct at least three test runs for oxygen. Make sure each test run represents a 1-hour average and that sampling continues for at least 30 minutes in each hour.
(3) Use the fuel-factor equation in EPA Reference Method 3B in 40 CFR Part 60, Appendix A to determine the relationship between oxygen and carbon dioxide.
