Air Quality Advisory Cancelled
By 250 News
Wednesday, February 02, 2011 09:33 AM
Prince George, B.C. - The Ministry of Environment has cancelled the air quality advisory for Prince George.
The advisory was issued mid-morning yesterday, due to a high level of particulates trapped in the airshed by a high-pressure weather ridge.
As of 8am this morning, the level of both fine and coarse particulates was well below the provincial objectives:
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The provincial air quality objective for fine particles, PM2.5, is 25 micrograms per cubic metre, averaged over 24 hours. The 24 hour PM2.5 rolling average was 6 µg/m3 at the Plaza 400 downtown site and 11 µg/m3 at College Heights at 8 am today.
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The provincial air quality objective for coarse particles, PM10, is 50 micrograms per cubic metre, averaged over 24 hours. The 24 hour PM10 rolling average was 20 µg/m3 at the Plaza 400 downtown and 31 µg/m3 at College Heights and 41 µg/m3 at the BCR site at 8 am today.
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