The 2014 Ambient Air Monitoring Plan, drafted in May by the IEPA, recommends that the agency discontinue one sulfur monitoring site, one particulate matter monitor, and three lead monitoring sites.
"The proposed 2014 network plan provides select discontinuations from the plan approved by US EPA and operated in 2013," the plan reads (PDF). "The design of the monitoring network for 2014 has also been based upon the assumption that funding to support the monitoring program is likely to be reduced in fiscal year 2014 and that all efforts would be made to keep as much of the network intact as possible."
The particulate matter monitor is located atop Washington High School in the South Side of Chicago, one of the more polluted parts of the city. It specifically measures the amount of particles under 10 micrometers in diameter, known as PM 10, which can damage lung tissue, cause cancer, and lead to death.
According to the IEPA's 2011 annual air report (2012 and 2013 reports are not available from the website), this was the same monitoring station that observed the highest annual average concentration of airborne cadmium and sulfur in the state for that year.
