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Table 4 to Subpart WWWW 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 WWWW
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  11. Subject Group Definitions
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  13. Appendix Table 4 to Subpart WWWW of Part 60
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Displayed edition2026-05-14
Last updated2026-05-14

Table 4 to Subpart WWWW 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 for your CEMSDuring each relative accuracy test run, use the following methods to collect concurrent data
1. Particulate Matter For operation and correlation test, P.S. 11 in appendix B of this part and procedure 2 of appendix F to this partFollow the test methods in Table 5 to Subpart WWWW.
For quarterly accuracy determinations, daily calibration drift tests, and each response correlation audit or relative response audit, procedure 2 of appendix F to this part.
2. Nitrogen OxidesControl device outlet: 125 percent of the maximum estimated hourly nitrogen oxides emissions of the municipal waste combustorFor operation, P.S. 2 in appendix B of this part and procedure 1 in appendix F of this part

For relative accuracy audit, P.S. 2 in appendix B of this part and procedure 1 of appendix F of this part		Method 7, 7A, 7C, 7D, or 7E in appendix A-4 to part 60 of this chapter.
For quarterly accuracy determinations and daily calibration drift tests, procedure 1 in appendix F of this part
3. Sulfur DioxideControl device outlet: 50 percent of the maximum estimated hourly sulfur dioxide emissions of the municipal waste combustorFor operation, P.S. 2 in appendix B of this part

For relative accuracy audit, P.S. 2 in appendix B of this part and procedure 1 of appendix F of this part		Method 6, 6A, or 6C, in appendix A-4 to part 60 of this chapter.
For quarterly accuracy determinations and daily calibration drift tests, procedure 1 in appendix F of this part.
4. Carbon Monoxide125 percent of the maximum estimated hourly carbon with monoxide emissions of the municipal waste combustorFor operation, P.S. 4A in appendix B of this part and procedure 1 of appendix F of this part

For relative accuracy audit, P.S. 4A in appendix B of this part and procedure 1 of appendix F of this part		Method 10, 10A, or 10B in appendix A-4 to part 60 of this chapter.
For quarterly accuracy determinations and daily calibration drift tests, procedure 1 in appendix F of this part.
5. Oxygen or Carbon Dioxide25 percent oxygen or 20 percent carbon dioxideP.S. 3 in appendix B of this partMethod 3A or 3B in appendix A-2 to part 60 of this chapter, or, as an alternative for oxygen or carbon dioxide correction, the manual method portion of ASME PTC-19-10-1981—part 10.
6. MercuryFollow the approved site-specific monitoring planFor operation, P.S. 12A in appendix B of this part and procedure 5 of appendix F of this part or the approved site-specific monitoring planFollow the test methods in Table 5 to Subpart WWWW.
For relative accuracy audit, daily calibration, weekly system integrity check, quarterly audit, procedure 5 of appendix F of this part
7. Hydrogen chlorideFollow the approved site-specific monitoring planFor operation, P.S. 18 in appendix B of this part and procedure 6 of appendix F of this part or the approved site-specific monitoring plan

For relative accuracy audit, daily calibration, quarterly audit, and other applicable quality assurance/quality control checks procedure 6 of appendix F of this part		Follow the test methods in Table 5 to Subpart WWWW, except you may also use Methods 320 or 321 of appendix A to part 63.
8. Cadmium or LeadFollow the approved site-specific monitoring planFor operation, the approved site-specific monitoring planFollow the test methods in Table 5 to Subpart WWWW.