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Part 6 contains rules developed to fulfill the federal Clean Air Act (CAA) 42 U.S.C. 7401 et seq.,
requirements referred to as “Reasonably Available Control Technologies” (RACT). They are
necessary to address moderate nonattainment area provisions for National Ambient Air Quality
Standards (NAAQS). For past standards, EGLE promulgated RACT rules for existing volatile
organic compound (VOC) sources in the nonattainment areas established under those standards.
With the establishment of a new standard, the state must:
1) Revise existing RACT rules to align with the most recent recommendations contained in the
United States Environmental Protection Agency’s (USEPA) Control Technique Guidelines (CTGs)
as required by the CAA Section 182(b)(2).
2) Evaluate VOC sources in the NAAQS nonattainment areas based on the more recently created
CTG categories.
3) Promulgate new rules setting or revising emission standards and operational requirements for
certain types of existing emission sources applicable to CTGs, beyond those established as rules
under previous standards, for the nonattainment areas. These nonattainment areas consist of the
following counties: Allegan (partial), Berrien, Livingston, Macomb, Monroe, Muskegon (partial),
Oakland, St. Clair, Washtenaw, and Wayne.
Additionally, the CAA requires Michigan to show reasonable further progress by reducing VOC
emissions in the nonattainment areas by fifteen percent from the baseline year. To meet this
requirement, beyond the reductions gained from implementing VOC RACT rules, EGLE has also
revised and drafted additional rules that address volatile chemical products.
8. Please cite the specific promulgation authority for the rules (i.e. department director,
commission, board, etc.).
Section 5503(a) of Part 55, Air Pollution Control, of the Natural Resources and Environmental
Protection Act, 1994 PA 451, as amended (NREPA), gives the department the authority to
promulgate rules. Section 5512(1) of Part 55 of the NREPA, states the department shall
promulgate rules for a variety of purposes including controlling air pollution and complying with
the federal CAA.
A. Please list all applicable statutory references (MCLs, Executive Orders, etc.).
MCL 324.5503 and MCL 324.5512.
B. Are the rules mandated by any applicable constitutional or statutory provision? If so, please
explain.
MCL 324.5512 requires the department to promulgate rules for, among other things, the purpose
of controlling air pollution, complying with the federal CAA, and establishing suitable emission
standards. The rules in this submittal are necessary to address these requirements by limiting VOC
emissions and addressing the requirements of the federal CAA under Section 182 (b), as it pertains
to ozone nonattainment areas.
9. Please describe the extent to which the rules conflict with or duplicate similar rules,
compliance requirements, or other standards adopted at the state, regional, or federal level.
The current rules do not sufficiently address requirements of the federal regulations. The proposed
changes will update the emission standards to a level required by the federal CAA under Section
182(b)(2) for this standard’s respective moderate nonattainment areas.
10. Is the subject matter of the rules currently contained in any guideline, handbook, manual,
instructional bulletin, form with instructions, or operational memoranda?
MCL 24.239