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Ohio (Part 63) MACT Standards Delegations

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Air Standards Delegations in Ohio

Clean Air Act Section 112 Major and Area Source Standards

EPA's final delegation approval of Section 112 NESHAP standards for Ohio constitutes a program of straight delegation of all existing and future air toxic standards regardless of a source's Part 70 (Title V) applicability with the exception of the Coke Oven standard (40 CFR part 63 subpart L).

In 1994, EPA gave approval to Ohio EPA for its Title V program. Under this approval, a mechanism was established by which Ohio EPA was granted authority to implement and enforce present and future Section 112 NESHAP standards. Ohio EPA will have the authority to implement each Section 112 standard as promulgated unless Ohio EPA notifies EPA differently.

Ohio EPA will enforce Section 112 NESHAP standards through the Title V permit, federally enforceable state operating permit and the new source review permit programs. Pursuant to Ohio Revised Code §3704.036(A), Ohio EPA has the authority to include Section 112 requirements in Title V permits. Therefore, delegation will be implemented on a source by source basis.  Visit Ohio NSPS and NESHAP delegation page for additional documents.

Federal Register Documents for Approval of Section 112 (l) Program of Delegation

  • Proposed Rule (Federal Register Notice 66 FR 36228) - July 11, 2001
  • Direct Final Rule (Federal Register Notice 66 FR 36173) - July 11, 2001

Memorandum of Agreement, Delegation Request, and Other Historical Documentation

  • Ohio 112(f) Memorandum of Agreement - 2017 (pdf) (502.98 KB, March 21, 2017)
  • Ohio Delegation Approval (pdf) (438.96 KB, Mar. 3, 2017)
  • Ohio Request for 112 (I) Delegation (pdf) (2.89 MB, Feb. 18, 2016)
  • Ohio AG 112 (l) Opinion (pdf) (441.79 KB, May 10, 1999)
  • Ohio EPA 112 (l) Second Delegation Request (pdf) (1.98 MB, Nov. 20, 1995)
  • Ohio EPA 112 (l) Delegation Request (pdf) (78.25 KB, March 31, 1995)

EPA in Ohio

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    • Ohio (Part 60) NSPS and (Part 61) NESHAP Delegations
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Last updated on February 27, 2025
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