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Ozone Health Advisory Program Summaries

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2006 Ozone Health Advisory Program Summary (5/1/06–9/30/06)

National Park Service Area*

Number of Days
8-hr Ozone
Average > 84 ppb

Number of Days Ozone Health Advisory Issued

Acadia NP 2 1
Great Smoky Mtns NP 9 1
Mammoth Cave NP 0 0
Rocky Mountain NP 1 18
Sequoia & Kings Canyon NPs 53 42
Shenandoah NP 0 0
* This table shows the results for NPS areas participating in the 2006 ozone health advisory program.
† Ozone values above 84 part per billion (ppb) exceed the ozone National Ambient Air Quality Standard of 0.08 part per million (ppm).
‡ Eighteen health advisories were issued at Rocky Mountain National Park based on Colorado Department of Public Health and Environment advisory forecasts. There was one event when the ozone 8-hr average was greater than 84 ppb at the Park.

The 8-hour ozone standard can be exceeded anytime during a 24-hour day time period. Ozone health advisories are initiated during the day light hours, therefore it is possible that the ozone health standard is exceeded at an area and an ozone health advisory is not issued.

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Last Updated: April 02, 2012