Performance Measure
Agency
Measure Name
The annual number of days when ozone levels are above the 2008 8-hour ozone standard of 75 parts per billion.
Measure Last Modified
Oct 27 2015 11:06
Measure Last Published
Apr 14 2016 09:33
Measure Status
Active
Data Source and Calculation

Ambient ozone concentrations are recorded continuously during the summer months by the agency’s ozone monitoring network. To determine performance, the annual monitoring report and the ozone monitoring network data are used to determine the number of days when ozone levels are above the 8-hour ozone standard of 75 parts per billion, then compared to the baseline (measured during calendar year 2007).

Enterprise Priorities and Strategies
Enterprise InitiativeEnterprise PriorityEnterprise Strategy
Associated Service Areas
SA CodeSA Name
51328Air Protection Planning and Policy
Measure ID44051328.001.001
Measure ClassOther Agency
Measure TypeOutcome
Year TypeCalendar
Preferred TrendDecrease
FrequencyAnnually
Statistical UnitNumber
Baseline and Targets
Target NameDateResultNote
Baseline
Short Target 2018
Long Target 2020
Measure Results
YearResultExplanatory Note
200746.00
200825.00
20093.00
201025.00
201119.00Reporting period is identified as the calendar year, ending December 31. The U. S. Environmental Protection Agency (EPA) has revised the ozone standard recently. Consequently, the reported data for previous years will need to be changed to be consistent with the new standard. These revisions, as well as the 2008 measurement, are expected to be available by November 2009. Annual updates of the measurement are expected to be available in July. Data from earlier years was provided to give a historical context for the ozone levels reported exceeding the standard.
201220.00Reporting period is identified as the calendar year, ending December 31. The next update expected in July.
20132.00"All air quality standards and compliance determinations are based on a calendar year. In the case of the ozone standard, monitored data from each year’s typical ozone season (May to September) is used for compliance determination. In the case of the annual PM2.5 standard, the entire year of monitored data is used for this purpose. Therefore, it would not be possible to report these data by fiscal year."
20143.00
20153.00
2016
2017
- Run Date: 03/27/2017 12:45:55