Overview
Holman Field is an air monitoring station in St. Paul, Minnesota, operated by the Minnesota Pollution Control Agency. It contributes to the US EPA Air Quality System network, tracking criteria pollutants to support public health and regulatory compli
Holman Field is an operational air monitoring station located in St. Paul, Minnesota, United States. It is part of the state's ambient air quality surveillance network managed by the Minnesota Pollution Control Agency, Division of Air Quality. As a fixed-site monitor, it plays a role in the broader US EPA Air Quality System (AQS), which aggregates data from thousands of stations nationwide to assess compliance with National Ambient Air Quality Standards (NAAQS). The station operates under the regulatory framework of the Clean Air Act, which mandates monitoring of criteria pollutants such as ozone, particulate matter, carbon monoxide, sulfur dioxide, nitrogen dioxide, and lead. While specific parameters measured at Holman Field are not detailed, typical stations in urban areas like St. Paul focus on ozone and PM2.5 due to local health concerns. The Minnesota Pollution Control Agency ensures siting representativeness and data quality through EPA-approved methods and periodic audits. Holman Field's location near the Mississippi River and downtown St. Paul provides valuable data on urban air quality influenced by transportation, industrial activity, and meteorological patterns. Continuous monitoring supports public health advisories, emission reduction strategies, and regional air quality planning. The station's long-term operation contributes to trend analysis and policy evaluation, benefiting communities in Ramsey County and the broader Twin Cities metropolitan area.
Environmental context
St. Paul's air quality is influenced by a mix of urban sources including vehicular emissions, industrial facilities, and seasonal wood burning. The Mississippi River valley can trap pollutants during temperature inversions, leading to elevated ozone and PM2.5 episodes. Monitoring stations like Holman Field help track these patterns, providing data for health alerts and regulatory actions. The station's location in a mixed residential-commercial area offers representative sampling of population exposure.
Frequently asked questions
Holman Field is located in St. Paul, Minnesota, United States, at coordinates 44.944134, -93.065125. It is situated near the Mississippi River in Ramsey County.
As part of the Minnesota Pollution Control Agency's network, Holman Field typically measures criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), and other pollutants regulated under the Clean Air Act. Specific parameters may vary based on local air quality needs.
The station is operated by the Minnesota Pollution Control Agency, Division of Air Quality, which is responsible for ambient air monitoring across the state.
Data from Holman Field is submitted to the US EPA Air Quality System (AQS), which is used to determine compliance with National Ambient Air Quality Standards (NAAQS). This information supports public health advisories and emission reduction strategies.
Air monitoring in the US is governed by the Clean Air Act and implemented through the EPA's AQS network. Stations must follow federal reference methods for sampling and quality assurance to ensure data accuracy and representativeness.
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