Aspen’s PM 2.5 Study
In 2013, the Environmental Health Department began reviewing its air quality monitoring program to determine what equipment will replace the aging TEOM (PM 10 monitor), whether or not to include PM 2.5 in its monitoring scope and how to better communicate Aspen’s air quality to the community.
In order to study PM 2.5, staff modified our existing TEOM (PM 10 monitor) to sample for the smaller particulates. Although this modification was not a federally equivalent method, it can give us a good idea of what is happening with PM 2.5 levels in Aspen. Monitoring times are based on traffic volumes, construction activity and wood burning trends. The graph above shows the first snap shot for PM 2.5 in Aspen. As you can see, levels were well below the new PM 2.5 24-hour standard of 35 ug/L.
During this study we were not able to monitor PM 10, however Aspen’s air was still monitored by the State’s PM 10 monitors.