40 CFR § 62.5621
Identification of sources
June 9, 2020
The Michigan State Plan for existing Sewage Sludge Incinerators (SSI) applies to all SSIs for which construction commenced on or before October 14, 2010 or for which a modification was commenced on or before September 21, 2011 primarily to comply with this rule.
[80 FR 70697, Nov. 16, 2015]