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4th Maximum Ozone Values Table (ppb) through September 30th, 2018

The Denver Metro/North Front Range area is designated as nonattainment by the U.S. Environmental Protection Agency (EPA) for the pollutant ozone. The 2015 8-Hour Ozone Standard is 70 parts per billion (ppb) and is calculated using a rolling three-year average of the...

4th Maximum Ozone Values Table (ppb) through September 16th, 2018

The Denver Metro/North Front Range area is designated as nonattainment by the U.S. Environmental Protection Agency (EPA) for the pollutant ozone. The 2015 8-Hour Ozone Standard is 70 parts per billion (ppb) and is calculated using a rolling three-year average of the...

4th Maximum Ozone Values Table (ppb) through July 22nd, 2018

The Denver Metro/North Front Range area is designated as nonattainment by the U.S. Environmental Protection Agency (EPA) for the pollutant ozone. The 2015 8-Hour Ozone Standard is 70 parts per billion (ppb) and is calculated using a rolling three-year average of the...
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