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42 U.S.C. 7401 et seq.
36 FR 24877, Dec. 23, 1971, unless otherwise noted.
91 FR 11860, Mar. 10, 2026, unless otherwise noted.
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| Municipal waste combustor technology | The following emission limits and averaging times apply . . . | |
|---|---|---|
| Carbon monoxide emission limit (parts per million by volume) a |
Averaging time (hours) b |
|
| Mass burn waterwall | 100 | 4 |
| Mass burn refractory | 100 | 4 |
| Mass burn rotary refractory | 110 | 24 |
| Mass burn rotary waterwall | 110 | 24 |
| Modular starved air | 50 | 4 |
| Modular excess air | 50 | 4 |
| Refuse-derived fuel stoker | 110 | 24 |
| Fluidized bed, mixed fuel (wood/refuse-derived fuel) | 110 | 24 |
| Bubbling fluidized bed combustor | 100 | 4 |
| Circulating fluidized bed combustor | 100 | 4 |
| Pulverized coal/refuse-derived fuel mixed fuel-fired combustor | 110 | 4 |
| Spreader stoker coal/refuse-derived fuel mixed fuel-fired combustor | 110 | 24 |
| Semi-suspension refuse-derived fuel-fired combustor/wet refuse-derived fuel process conversion | 250 | c 24 |
| Spreader stoker fixed floor refuse-derived fuel-fired combustor/100 percent coal capable | 250 | c 24 |
| a Measured at the combustor outlet in conjunction with a measurement of oxygen concentration, corrected to 7 percent oxygen (dry basis). Calculated as an arithmetic average. CEMS data during warmup, startup, and shutdown, as defined in this subpart, are not corrected to 7 percent oxygen, and are used as measured. The averaging times are specified in greater detail in § 60.6495(b). | ||
| b Averaging times are 4-hour or 24-hour block arithmetic averages. | ||
| c 24-hour block average, geometric mean. | ||