An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Oklahoma SIP: OK 252:100- 3. Air Quality Standards and Increments, SIP effective 2009-02-27 (OKd06) to 2016-10-27

Regulatory Text:
Oklahoma Administrative Code.  Title 252.  Department of Environmental Quality

Chapter 100.  Air Pollution Control (OAC 252:100)

SUBCHAPTER 3.  AIR QUALITY STANDARDS AND INCREMENTS
As approved by EPA December 29, 2008 (73 FR 79400) effective February 27, 2009 (OKd06).


Sections:
252:100-3-1.  Purpose, OKc48
252:100-3-2.  Primary standards, OKc48
252:100-3-3.  Secondary standards, OKc48
252:100-3-4.  Significant deterioration increments, OKd06


252:100-3-1.  Purpose
As adopted in Oklahoma Register May 16, 1994 (11 Ok Reg 2031) effective May 26, 1994.
Approved by EPA November 3, 1999 (64 FR 59629) effective January 3, 2000 (OKc48).

     The purpose of this Subchapter is to enumerate the primary and secondary ambient air quality standards and the significant deterioration increments.


252:100-3-2.  Primary standards
As adopted in Oklahoma Register May 16, 1994 (11 Ok Reg 2031) effective May 26, 1994.
Approved by EPA November 3, 1999 (64 FR 59629) effective January 3, 2000 (OKc48).

     The table in Appendix E of this chapter enumerates the primary ambient air quality standards.


252:100-3-3.  Secondary standards
As adopted in Oklahoma Register May 16, 1994 (11 Ok Reg 2031) effective May 26, 1994.
Approved by EPA November 3, 1999 (64 FR 59629) effective January 3, 2000 (OKc48).

     The table in Appendix F of this Chapter enumerates the secondary ambient air quality standards.


252:100-3-4.  Significant deterioration increments
As adopted in the Oklahoma Register June 3, 1996 (13 Ok Reg 1917) effective July 1, 1996.
Approved by EPA December 29, 2008 (73 FR 79400) effective February 27, 2009 (OKd06).

     (a)  Significant deterioration, as used in the phrase Prevention of Significant Deterioration (PSD), means an increase in ambient air pollution above a baseline plus a specific increment allowed for one of three classes of areas.  See OAC 252:100-7, Part 5.

NOTE TO READER: “OAC 252:100-7 Part 5" cited above is not in SIP. The Oklahoma SIP-approved PSD regulation is Oklahoma Regulation 1.4.4, “Major Sources – Prevention of Significant Deterioration (PSD) Requirements for Attainment Areas.” END NOTE TO READER


     (b)  The allowable increments are as follows:
 

Pollutant Maximum allowable increase
(micrograms per cubic meter)
Class I Areas -
  Particulate matter: -
    PM-10, annual arithmetic mean              4
    PM-10, twenty-four hour maximum              8
  Sulfur dioxide: -
    Annual arithmetic mean              2
    Twenty-four hour maximum              5
    Three-hour maximum             25
  Nitrogen dioxide: -
    (effective May 11, 1991)
    Annual arithmetic mean
             2.5
Class II Areas -
  Particulate matter: -
    PM-10, annual arithmetic mean             17
    PM-10, twenty-four hour maximum             30
  Sulfur dioxide: -
    Annual arithmetic mean             20
    Twenty-four hour maximum             91
    Three-hour maximum            512
  Nitrogen dioxide: -
    (effective May 11, 1991)
    Annual arithmetic mean
            25
Class III Areas -
  Particulate matter: -
    PM-10, annual arithmetic mean             34
    PM-10, twenty-four hour maximum             60
  Sulfur dioxide: -
    Annual arithmetic mean             40
    Twenty-four hour maximum            182
    Three-hour maximum            700
  Nitrogen dioxide: -
    (effective May 11, 1991)
    Annual arithmetic mean
            50