| For the following pollutants | Use the following span values for CEMS | Use the following performance specifications 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. Opacity | 100 percent opacity | P.S. 1 | Method 9. | 2. Nitrogen Oxides (Class I units only) | Control device outlet: 125 percent of the maximum expected hourly potential nitrogen oxides emissions of the municipal waste combustion unit | P.S. 2 | Method 7E. | 3. Sulfur Dioxide | Inlet to control device: 125 percent of the maximum expected hourly potential sulfur dioxide emissions of the municipal waste combustion unit | P.S. 2 | Method 6C. |  | Control device outlet: 50 percent of the maximum expected hourly potential sulfur dioxide emissions of the municipal waste combustion unit |  |  | 4. Carbon Monoxide | 125 percent of the maximum expected hourly potential carbon monoxide emissions of the municipal waste combustion unit | P.S. 4A | Method 10 with alternative interference trap. | 5. Oxygen or Carbon Dioxide | 25 percent oxygen or 25 percent carbon dioxide | P.S. 3 | Method 3A or 3B. |