Speedwell Air Monitoring Station | CASTNET | Speedwell, Tennessee

Speedwell is an air monitoring station located at 718 Russell Hill Rd, Speedwell, Tennessee, within Claiborne County. It operates as part of the Clean Air Status and Trends Network (CASTNET), a national program designed to monitor ambient air quality and assess the effectiveness of emission reduction strategies under the Clean Air Act. The station is operated by Mactec, Inc on behalf of the reporting agency, with the most recent sample collected on December 24, 2024. CASTNET stations typically measure criteria pollutants, atmospheric deposition, and meteorological parameters, providing high-quality data for regulatory compliance and scientific research. The network follows rigorous EPA quality assurance protocols to ensure data representativeness and continuity. Located in rural Tennessee, Speedwell contributes to understanding regional air quality in the Appalachian region. Its data supports the evaluation of long-term trends in acid deposition, ozone, and particulate matter, informing policy decisions and public health assessments. The station plays a key role in the national air monitoring infrastructure, complementing state and local networks.

The Speedwell station provides critical data on air quality in the Appalachian region, an area influenced by both local sources and long-range transport of pollutants. As part of CASTNET, it monitors key parameters such as ozone, sulfur dioxide, nitrogen oxides, and particulate matter, which are essential for assessing compliance with National Ambient Air Quality Standards (NAAQS). The station's rural siting ensures representative background conditions, helping to distinguish regional trends from local emissions. Continuous operation supports trend analysis and the evaluation of emission control programs under the EPA's Acid Rain Program and Cross-State Air Pollution Rule.