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Data on this page are updated daily when complete data are received. Data marked
excluded have been omitted.
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It is important to note that the ozone monitoring data less than three months old
viewed on this website have generally not been verified and checked for quality
assurance in accordance with federal requirements.
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Sydney |
Ad Hoc Reporting |
AQS # L057-3002
Sydney
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Ozone |
2020, 2021 and 2022 data are needed to
determine an area's attainment status with the 8-hr ozone standard. If the average is higher
than 70 parts per billion, the area will not meet the ozone standard.
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Year
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4th Highest 8hr Average
(displayed in parts per billion)
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Date
|
|
2023 |
60 |
05-MAY |
2022 |
58 |
29-MAY |
2021 |
58 |
08-APR |
2020 |
63 |
04-MAY |
|
2022 3 Year Attainment Average = |
60 |
2023 Year-to-Date 3 Year Running Average = |
59 |
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SO2 |
1-Hour Standard (75 ppb). The 1-hour standard comparison is based on the three-year average
of the annual 99th percentile of the daily maximum 1-hour average concentrations. If the average is higher
than 75 parts per billion, the area will not meet the SO2 standard.
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Year
|
Three-year average Attainment value
(displayed in parts per billion)
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|
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2023 |
* |
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NO2 |
NO2 is not monitored at this site |
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CO |
1-Hour Standard (35 ppm) The 1-hour standard comparison is based on the number of hourly values higher than 35 ppm
(it is violated if exceeded more than once per year).
8-Hour Standard (9 ppm) The 8-hour standard comparison is based on the number of 8-hour averages higher than 9 ppm
(it is violated if exceeded more than once per year).
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Year
|
Highest Hourly value
(displayed in parts per million) |
Highest 8-Hour value
(displayed in parts per million) |
|
2023 |
.679 (Met Attainment Standard) |
.71 (Met Attainment Standard) |
Last updated: Jan 11, 2019
New Page 1
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