Air Quality Advisory Cancelled
By 250 News
Thursday, January 07, 2010 09:54 AM
Prince George, B.C.-The Air Quality Advisory for Prince George has been cancelled.
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 17 µg/m3 at the Plaza 400 downtown site at 10:00 am and 19 µg/m3 at College Heights.
The provincial air quality objective for fine particles, PM10, is 50 micrograms per cubic metre, averaged over 24 hours. The 24 hour PM10 rolling average was 26 µg/m3 at the Plaza 400 downtown, 34 µg/m3 at BCR and 30 µg/m3 at College Heights.
Based on the air quality data, the high levels were mainly due combustion emissions, including wood smoke (wood stoves) as well as emissions from industry and transportation sources such as automobiles, trucks and rail traffic.
Even though the advisory has been cancelled, there still is a slight possibility of a few hours of elevated levels as well as odour later this morning.
With the cancellation of the Air Quality Advisory, Free Transit rides will end at 11:59 tonight.
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