COMBS Air Monitoring Station, Queen Creek, Arizona | Environmental Monitoring

COMBS is an air monitoring station located at 301 E Combs Rd in Queen Creek, Arizona, within Pinal County. The station is operational and reports to the Pinal County Air Pollution Control District (APCD), contributing to the regional ambient air quality monitoring network. As a fixed-site monitor, it plays a role in tracking criteria pollutants and supporting compliance with the US EPA's National Ambient Air Quality Standards (NAAQS). The station operates under the regulatory framework of the US Clean Air Act, with data potentially integrated into the EPA's Air Quality System (AQS). While specific parameters measured are not detailed, typical air monitoring stations in Arizona measure ozone, particulate matter (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide. The station's location in a growing suburban area near Phoenix provides representative data for population exposure assessment. Queen Creek's arid climate and rapid urbanization make air quality monitoring important for understanding local pollution sources, including transportation and construction dust. The data from COMBS supports public health advisories and regulatory planning. Continued operation ensures long-term trend analysis for the region.

The COMBS station is situated in the Sonoran Desert, characterized by hot summers and mild winters, with frequent dust events. Pinal County has experienced population growth and increased vehicle emissions, making air monitoring critical for tracking ozone and particulate matter. The station's siting in a residential area provides representative exposure data for the community, supporting the EPA's goal of protecting public health through the NAAQS.