| Oklahoma Department of Environmental Quality |
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2023 OKLAHOMA SO2 |
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Highest 1 Hour Daily Highs (ppb) through December 28, 2023 |
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| Site |
2023 Daily Max 1-hr Values |
3 Year Avg of 99th Percentile |
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| 2020 |
2021 |
2022 |
1st |
2nd |
3rd |
4th* |
20-22 Avg |
21-23 Avg |
2023 |
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| 99th % |
99th % |
99th % |
(date) |
(date) |
(date) |
(date) |
99th % |
99th % |
Critical Value |
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| Ponca City (604) |
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14.0 |
7.0 |
7.0 |
5.0 |
20 |
14 |
191 |
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| 23.0 |
27.0 |
10.0 |
15-Jan |
3-Apr |
7-Dec |
28-Jan |
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| OKC North (1037) |
13.0 |
3.0 |
1.0 |
1.0 |
1.3 |
1.0 |
226 |
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| 2.0 |
1.0 |
1.0 |
21-Apr |
23-Apr |
11-Jan |
6-Aug |
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| Tulsa Newblock (175) |
10.0 |
10.0 |
8.0 |
7.0 |
6 |
6 |
217 |
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| 7.0 |
5.0 |
6.0 |
23-Jan |
24-Jan |
26-Jan |
1-Apr |
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| Tulsa TCWD (235) |
10.0 |
7.0 |
6.0 |
5.0 |
4 |
4 |
222 |
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| 5.0 |
4.0 |
2.0 |
9-Apr |
3-May |
8-Apr |
7-May |
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Tulsa Central (1127) |
4.0 |
4.0 |
3.8 |
3.1 |
3 |
3 |
222 |
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| 1.7 |
2.2 |
3.6 |
4-Aug |
9-Oct |
29-Jul |
26-Jun |
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| Tulsa Riverside (179) |
closed |
3 |
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| 3.0 |
closed |
closed |
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| Oxbow/Kremlin (555) |
42.0 |
40.0 |
40.0 |
37.0 |
31 |
33 |
166 |
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| 32.0 |
24.0 |
38.0 |
23-Apr |
1-Apr |
28-Aug |
24-Sep |
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| Fort Gibson (170) |
closed |
11 |
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| 11.0 |
closed |
closed |
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| Pryor (188) |
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closed |
15 |
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| 15.0 |
closed |
closed |
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| * 4th Highs
are considered 99th percentile until end of year data completeness can be
calculated. |
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