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Juneau State Office Mailing Address Update

All mail sent to the DEC office in Juneau through the U.S. Postal Service must be addressed to P.O. Box 111800. Beginning October 1, all mail addressed to our Willoughby Avenue address will not be delivered and will be returned to sender by the Post Office. This change only impacts incoming mail to the Juneau office.

North Pole PM2.5 Data

North Pole Fire Station #3 - Monitoring Data

The North Pole Fire Station #3 Monitor was originally a special purpose monitor (SPM) set up in 2012 to monitor wintertime PM2.5 levels in North Pole from October through March. In 2015, the monitor was reclassified as a state and local air monitoring station (SLAMS) and will operate year round. More information can be found in the Air Monitoring Network Plan. Levels of PM2.5 recorded at this monitor are significantly higher than at the Fairbanks State Office Building monitor. EPA used data from this monitor to determine the design value for the whole Nonattainment Area.

 

Note: The vertical axis of these charts extends to 200 µg/m3.

The following graphs show the 24-hour averaged PM2.5 concentrations measured at the North Pole Fire Station #3 monitor from 2012 through 2017.

 

2017

 

In 2017 the PM2.5 concentrations exceeded the 24-hour NAAQS (35 µg/m3) 18 times. There were six Exceptional Events documented this year. The 98th percentile concentration was 75.5 µg/m3.

 

2016

 

In 2016 the PM2.5 concentrations exceeded the 24-hour NAAQS (35 µg/m3) 13 times. There were no Exceptional Events documented this year. The 98th percentile concentration was 66.8 µg/m3.

 

2015

 

*2015 is the first year that the monitor was operated year-round, previously the site was operated only during the winter.

In 2015 the PM2.5 concentrations exceeded the 24-hour NAAQS (35 µg/m3) 18 times. The exceedances measured in June and July were caused by wildfire smoke and are going to be submitted as an “Exceptional Event” to EPA. They will most likely not be used to calculate NAAQS compliance. The 98th percentile concentration was 111.6 µg/m3.

 

2014

 

*The site was considered a seasonal site prior to 2015 and only operated during the winter.

In 2014 the PM2.5 concentrations exceeded the 24-hour NAAQS (35 µg/m3) 22 times. The 98th percentile concentration was 138.3 µg/m3.

 

2013

 

*The site was considered a seasonal site prior to 2015 and only operated during the winter.

The 2013 PM2.5 concentrations exceeded the 24-hour NAAQS (35 µg/m3) 11 times. The 98th percentile concentration was 121.6 µg/m3.

 

2012

 

The 2012 PM2.5 24-hour concentrations exceeded the 24-hour NAAQS (35 µg/m3) 10 times. Monitoring did not begin until March. The 98th percentile concentration was 158.4 µg/m3.