Region 6 delegation documents are provided below for the State of Texas. The delegation documents are a technical reference to federal rules that may be delegated to a state.
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Region 6 delegation documents are organized and provided in PDF format for each state/local partner. Federal Register Notices ensure accuracy of specific delegation authorities, but Region 6 delegation letters are also provided, when available, for further detail about a specific delegation agreement. The type of delegation is predominantly identified based upon the term Partial Delegation (refers to administrative and technical delegation authorities as specified in each rule) or the term Full Delegation (refers to both implementation and enforcement authorities as specified in each rule). However, please note that Tribal Lands are excluded from State Delegations, as are lands within the jurisdiction of those local authorities that have been authorized for program implementation within the State. Delegations are also delineated in the record title information by Initial, Amended/Revised, or Updated types of delegation agreements, always in chronological order for ease of reference. The type of delegation mechanism used by a delegation authority may also be included in each record’s summary description, such as Incorporation by Reference.
Initial NSPS/NESHAP Delegation (02/07/1979) (PDF)(3 pp, 586 K)
Effective 02/07/1979 - Full Delegation includes text of letter agreement provided in FR Notice.
Amended NSPS/NESHAP Delegation (R6 Ltr) (PDF)(5 pp, 160 K)
Effective 12/28/1982 - Full Delegation revised to Automatic Delegation for Existing and Future standards. See corresponding FR Notice.
Amended NSPS/NESHAP Delegation (05/09/1983) (PDF)(2 pp, 288 K)
Effective 12/28/1982 - Full Delegation revised to Automatic Delegation for Existing and Future standards. See corresponding R6 Ltr.
Revised Delegation to Exclude NSPS AAA (R6 Ltr) (PDF)(2 pp, 71 K)
R6 to Revise Delegation Agreement to Exclude NSPS Subpart AAA, at request of Texas (also included as part of document).
Addendum to Exclude NSPS Subpart AAA from Delegation Agreement (PDF)(2 pp, 292 K)
Effective 07/27/1989 - 40 CFR Part 60 Subpart AAA - NSPS for Residential Wood Heaters, as promulgated by EPA on 02/26/1988 at 53 FR 5860, removed from Delegation Agreement (all R6 States).
Initial MACT Delegation (03/18/2005) (PDF)(9 pp, 1 MB)
Effective 05/17/2005 - Full Delegation for the MACT NESHAP Part 63 Specified Source Categories.
Update to MACT Delegation (05/02/2006) (PDF)(7 pp, 971 K)
Effective 07/03/2006 - Update to MACT Delegation for specified standards and/or sources, as promulgated through 04/12/2013.
Update to MACT Delegation (11/25/2014) (PDF)(7 pp, 278 K)
Effective 01/26/2015 - Update to MACT Delegation for specified standards and/or sources, as promulgated through 04/24/2013.