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Table 4 to Subpart AAAA of Part 60—Requirements for Continuous Emission Monitoring Systems (CEMS)

Requirements for Continuous Emission Monitoring Systems (CEMS)

  1. CFR
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  3. Title 40
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  5. Chapter I
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  7. Part 60
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  9. Subpart AAAA
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  11. Subject Group Definitions
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  13. Appendix Table 4 to Subpart AAAA of Part 60
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Displayed edition2026-04-27
Last updated2026-04-27

Table 4 to Subpart AAAA of Part 60—Requirements for Continuous Emission Monitoring Systems (CEMS)

For the following pollutantsUse the following span values for your CEMSUse the following performance specifications in appendix B of this part for your CEMSIf needed to meet minimum

data requirements, use the

following alternate methods

in appendix A of this part

to collect data
1. Opacity100 percent opacityP.S. 1Method 9.
2. Nitrogen Oxides (Class I units only) aControl device outlet: 125 percent of the maximum expected hourly potential nitrogen oxides emissions of the municipal waste combustion unitP.S. 2Method 7E.
3. Sulfur DioxideInlet to control device: 125 percent of the maximum expected sulfur dioxide emissions of the municipal waste combustion unit. Control device outlet: 50 percent of the maximum expected hourly potential sulfur dioxide emissions of the municipal waste combustion unitP.S. 2Method 6C.
4. Carbon Monoxide125 percent of the maximum expected hourly potential carbon with monoxide emissions of the municipal waste combustion unitP.S. 4AMethod 10 alternative interference trap.
5. Oxygen or Carbon Dioxide25 percent oxygen or 25 percent carbon dioxideP.S. 3Method 3A or 3B.
a Class I units mean small municipal waste combustion units subject to this subpart that are located at municipal waste combustion plants with an aggregate plant combustion capacity more than 250 tons per day of municipal solid waste. See § 60.1465 for definitions.