NWT Air Quality Report (2011) - Environment and Natural ...
NWT Air Quality Report (2011) - Environment and Natural ...
NWT Air Quality Report (2011) - Environment and Natural ...
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fort liardAIR QUALITYThe focus of the monitoring station in Fort Liardis to gather baseline community air qualityinformation <strong>and</strong> to track trends <strong>and</strong> cumulativeeffects of pollutant sources over time.The station is located near the Fort Liard <strong>Air</strong>port<strong>and</strong> measures PM 2.5, PM 10, SO 2, O 3, NO 2<strong>and</strong>H 2S. Monitoring has been conducted for selectparameters since 2000; however, this station wasestablished in 2004. Note that the O 3analyzer wasinstalled in 2007.Fine Particulate (PM 2.5)The <strong>2011</strong> annual PM 2.5average concentration was4.6μg/m 3 , while the maximum daily average was 25.8μg/m 3 . There were no exceedances ofthe <strong>NWT</strong> 24-hour st<strong>and</strong>ard for PM 2.5(30μg/m 3 ).Figure 17: <strong>2011</strong> Fort Liard BAM PM 2.59.08.07.0(μg/m 3 )30.025.0Monthly Average6.05.04.03.02.01.020.015.010.05.0Maximum Daily Average0.0J F M A M J J A S O N D0.0Monthly AverageMaximum Daily AverageFigure 17 shows the monthly averages <strong>and</strong> maximum daily averages for PM 2.5measuredfrom the BAM at the Fort Liard station in <strong>2011</strong>. The slightly elevated readings in the summermonths are typical <strong>and</strong> reflect the dusty roads <strong>and</strong> forest fire events in the region.<strong>NWT</strong> <strong>Air</strong> <strong>Quality</strong> <strong>Report</strong> <strong>2011</strong>23