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74 FR 56374, Oct. 30, 2009, unless otherwise noted.
75 FR 39767, July 12, 2010, unless otherwise noted.
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At 90 FR 21227, May 19, 2025, as required by the Congressional Review Act and Public Law 119-2, the Environmental Protection Agency removed the amendments to §§ 98.3 and 98.4 made effective on Jan. 17, 2025, at 89 FR 91163, Nov. 18, 2024. As of May 19, 2025, §§ 98.3 and 98.4 reverted to the Jan. 16, 2025 version.
| Factors | Default value | Units |
|---|---|---|
| B0—for facilities monitoring COD | 0.25 | Kg CH4/kg COD |
| B0—for facilities monitoring BOD5 | 0.60 | Kg CH4/kg BOD5 |
| MCF—anaerobic reactor | 0.8 | Fraction. |
| MCF—anaerobic deep lagoon (depth more than 2 m) | 0.8 | Fraction. |
| MCF—anaerobic shallow lagoon (depth less than 2 m) | 0.2 | Fraction. |