Overview
Portage- Hwy 12 is an operational air monitoring station in Portage, Indiana, managed by the Indiana Department of Environmental Management. It tracks criteria pollutants to support EPA Air Quality System compliance.
Portage- Hwy 12 is an air monitoring station located on Highway 12 near the Bethlehem Steel waste lagoon in Portage, Indiana, United States. Operated by the Indiana Department of Environmental Management's Office of Air Quality, this station is part of the national network that monitors ambient air quality under the Clean Air Act. The station is operational and contributes data to the EPA's Air Quality System (AQS). As an air monitoring station, Portage- Hwy 12 measures criteria pollutants such as ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide, in accordance with EPA standards. The station's siting near an industrial area provides representative data for assessing local air quality impacts. The last reported sample date is August 31, 2025, indicating ongoing data collection. The station plays a key role in protecting public health and the environment in Porter County. Its data helps inform regulatory decisions and community awareness about air quality. By maintaining continuous monitoring, it supports Indiana's efforts to meet National Ambient Air Quality Standards (NAAQS) and provides valuable information for residents and policymakers.
Environmental context
Located in an industrial area near a former steel mill, the Portage- Hwy 12 station monitors air quality in a region with potential emissions from heavy industry and transportation. The station's data contributes to understanding local pollution patterns and supports compliance with EPA's NAAQS. Its placement ensures representative sampling of industrial and urban influences, aiding in the assessment of health risks and environmental management.
Frequently asked questions
The station is located on Highway 12 near the Bethlehem Steel waste lagoon in Portage, Indiana, United States.
The station monitors criteria pollutants including ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide, as part of the EPA Air Quality System.
The station is operated by the Indiana Department of Environmental Management's Office of Air Quality.
Air monitoring stations like Portage- Hwy 12 operate under the Clean Air Act and follow EPA standards for the Air Quality System (AQS), ensuring data quality and comparability.
Industrial areas may have higher emissions from factories and traffic. Continuous monitoring helps assess compliance with air quality standards and protects public health by providing data for regulatory actions.
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