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The original item was published from 9/20/2011 3:10:05 PM to 9/22/2011 12:05:01 AM.

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Environmental Programs

Posted on: September 21, 2011

[ARCHIVED] Spare the Air Day

Summer Spare the Air alerts are triggered by concentrations of ground-level ozone pollution reaching an unhealthy level, usually brought on by clear skies, hot temperatures, and light winds. For more information about Spare the Air alerts, please visit

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