Joseph Boggs works with the PM2.5 monitor in Grayson, KY.
Footsteps lead through the snow toward the monitoring station at Grayson Lake. No matter the weather, air monitoring staff must visit stations regularly to retrieve important air monitoring data and samples.
PM monitor and Joseph Boggs.
Wearing gloves so as not to contaminate the sample, Boggs removes a filter from the PM2.5 monitor.