Thu09182014

     Subscribe  |  Contact  |  Advertise  |  RSS Feed Other Publications

Wednesday, 07 April 2010 17:37

EPA ozone standards

Written by 

Limit prior to 2008: .08 parts per million

New limit set in 2008: .075 parts per million

New limit pending in 2010: Between .06 and .07 parts per million

How WNC stacks up

Ozone levels have improved gradually in WNC over the past 10 years. They can vary widely from year to year depending on weather, however. Wetter and cooler summers see fewer bad ozone days that hotter, drier ones.

To determine whether WNC meets the new ozone limits, an average of three years worth of ozone readings — from 2008 through 2010 — will be used.

Here’s the levels for ozone monitoring stations in the region based on the three-year average from 2007-2009. Ozone is worse at higher elevations and surprisingly consistant across the mountains.

Waynesville    .068 parts per million

Bryson City    .064 parts per million

Asheville    .069 parts per million

 

High elevation sites

Purchase Knob    .074 parts per million

(near Hemphill Knob above Jonathan Creek in Haywood County)

Frying Pan    .074 parts per million

(near Mount Pisgah off the Blue Ridge Parkway in Haywood County)

Mount Mitchell    .074 parts per million

(highest elevation on the east coast)

• A monitoring station has been recently installed on Barnet Knob on Cherokee Indian Reservation and will be providing data this year.

blog comments powered by Disqus
Read 4089 times

Media

blog comments powered by Disqus

This Must Be the Place

  • This must be the place

    art theplaceI did it again. It’s 9 a.m. last Saturday at the starting line of the Cashiers Trail Mix five-mile backwoods race. I knew I should have gotten more sleep the night before, should have at least had something to eat that morning. Shouldn’t have overindulged in the libations of Friday night, nor said the things I now regretted to my girlfriend.

    Written on Wednesday, 17 September 2014 14:59 Read more...