The national emission standards for chemical manufacturing area sources -- chromium compounds are those in 40 C.F.R. § 63, Subpart NNNNNN (July 1, 2018). A source that operates a unit subject to Subpart NNNNNN is exempt from the obligation to obtain a Part 70 operating permit if the source is not required to obtain a Part 70 operating permit for a reason other than the source is subject to Subpart NNNNNN. Exempted sources must still meet the applicable requirements in Subpart NNNNNN.
S.D. Admin. R. 74:36:08:111
General Authority: SDCL 34A-1-6.
Law Implemented: SDCL 34A-1-18.