Oklahoma SIP: OK 252:100 Appendix F, Secondary Ambient Air Quality Standards (Subchapter 3)
Regulatory Text:
Oklahoma Administrative Code. Title 252. Department of Environmental Quality
Chapter 100. Air Pollution Control
APPENDIX F. SECONDARY AMBIENT AIR QUALITY STANDARDS
As adopted in the Oklahoma Register May 17, 1999 (16 Ok Reg 1381) effective June 1, 1999.
Approved by EPA December 29, 2008 (73 FR 70400) effective February 27, 2009 (OKd06).
(Appendix F is cited in 252:100-3-3.)
Time Period |
Sulfur Dioxide |
PM-10 | PM-2.5 | Carbon Monoxide |
Ozone | Nitrogen Dioxide |
Lead |
|---|---|---|---|---|---|---|---|
| 1-hr. max | |
|
|
40 mg/m3 (2)35 ppm |
|
|
|
| 3-hr. max | 1300
μg/m3 |
|
|
|
|
|
|
| 8-hr. max | |
|
|
10 mg/m3 (2)9 ppm |
(6)0.08 ppm | |
|
| 24-hr. max | |
(4)150
μg/m3 |
(5)65
μg/m3 |
|
|
|
|
| Calendar Qtr. | |
|
|
|
|
|
(7)1.5
μg/m3 |
| Annual | |
(3)50 μg/m3 | (8)15
μg/m3 |
|
|
100 μg/m3 (1)0.053 ppm |
|
(1) Annual arithmetic mean
(2) Not to be exceeded more than once per year
(3) The standard is attained when the expected arithmetic mean concentration is equal to or less than the numerical standard as determined by 40 CFR 50, Appendix K
(4) The form of the standard is based on the 99th percentile of the 24-hr PMl0 concentration in a year (averaged over 3 years)
(5) The form of the standard is based on the 98th percentile of the 24-hr PM2.5 concentration in a year (averaged over 3 years)
(6) The standard is attained when the computed 3-year average of the annual 4th highest daily max 8-hr average does not exceed 0.08 ppm
(7) The maximum arithmetic mean averaged over a calendar quarter
(8) Based on the 3-hr average of annual arithmetic mean PM2.5 concentrations