T&L North Air Monitoring Station, Decatur, Illinois | United States Environmental Monitoring

T&L North is an air monitoring station located at 899 N Folk St in Decatur, Macon County, Illinois, United States. It operates as part of the broader environmental monitoring infrastructure supporting air quality assessment in the region. The station is classified under the Air Monitoring Station plant type and is currently operational. The station reports to the ERM Group, Inc, a private environmental consulting firm, and its most recent sample date is October 1, 2025. While specific parameters measured are not detailed, typical air monitoring stations in the US EPA AQS network measure criteria pollutants such as ozone, particulate matter, carbon monoxide, sulfur dioxide, nitrogen dioxide, and lead, along with meteorological parameters. The station's siting in an urban area like Decatur supports representative monitoring of population exposure. T&L North plays a role in the local environmental monitoring network, providing data that can be used for regulatory compliance, public health assessments, and air quality trend analysis. Its operation contributes to the understanding of air quality in central Illinois, an area with mixed industrial and agricultural influences.

Decatur, Illinois, is home to industrial facilities including agricultural processing and manufacturing, which can influence local air quality. Air monitoring stations like T&L North help track pollutant levels to ensure compliance with National Ambient Air Quality Standards (NAAQS) set by the US EPA. The station's location in a mixed-use area provides representative data for assessing population exposure and supporting state implementation plans for air quality management.