40 CFR Appendix Table 4 to Subpart FFFF of Part 60 - Model Rule—Requirements for Continuous Emission Monitoring Systems (CEMS)

As stated in § 60.3039, you must comply with the following:

For the following pollutants	Use the following span values for your CEMS	Use the following performance specifications (P.S.) in Appendix B of this part for your CEMS	If needed to meet minimum data requirements, use the following alternate methods in Appendix A of this part to collect data
1. Carbon Monoxide	125 percent of the maximum hourly potential carbon monoxide emissions of the waste combustion unit	P.S.4A	Method 10.
2. Oxygen	25 percent oxygen	P.S.3	Method 3A or 3B of Appendix A to this part, or ASME/ANSI PTC 19.10-1981 (IBR, see § 60.17)) in lieu of Method 3B only.

[90 FR 27969, June 30, 2025]