This subpart was issued a partial vacatur by the United States Court of Appeals for the District of Columbia Circuit. See 72 FR 61060 (October 29, 2007).

Final Rule. See 76 FR (March 21, 2011), as amended at 78 FR 7138 (January 31, 2013); 80 FR 72807 (November 20, 2015). Note that some state and local partners have not yet applied for updated delegation of these standards (see footnotes on full delegations list).

ADs/RIs go to ARD or LRD.

Any authority that is not delegable by statute, or specified as non-delegable in a subpart directly, is not delegated - this includes Category II General Provisions (Subpart A) authorities, set forth in 40 CFR § 63.91(g)(2):

Amendments made to a rule after adoption by a State Agency are not delegated.  The delegations are subject to all of the conditions and limitations set forth in Federal law, regulations, policy, guidance, and determinations.  State authority delegation does not apply to sources located in Indian Country.  For those authorities that cannot be delegated, see certain general provisions listed in item 1 and also specific parts of some standards as stated in each specific standard. See also Subpart E, Approval of State Programs and Delegation of Federal Authorities - specifically, 40 CFR § 63.90(d) provides for authorities retained by EPA's Administrator.

Program delegated to Oklahoma Department of Environmental Quality (ODEQ) for standards promulgated by EPA, as amended in the Federal Register through September 1, 2006.