Overview
The Dalles - Cherry Heights Road (TDC) is an operational air monitoring station in The Dalles, Oregon, managed by the Oregon Department of Environmental Quality. It contributes to the US EPA Air Quality System network.
The Dalles - Cherry Heights Road (TDC) is an air monitoring station located at 1112 Cherry Heights Road in The Dalles, Oregon, United States. Operated by the Oregon Department of Environmental Quality, this station is part of the national ambient air quality monitoring network under the US EPA Air Quality System (AQS). It serves the Wasco County area, providing data on criteria pollutants to assess compliance with National Ambient Air Quality Standards (NAAQS). The station's technical operations follow EPA-approved methods for ambient air monitoring, including siting criteria to ensure representativeness of local air quality. As part of Oregon's state monitoring plan, it supports regulatory reporting and public health protection. The station's last reported sample date is June 30, 2025, indicating ongoing data collection. Environmental monitoring at this station helps track air quality trends in the Columbia River Gorge region, an area influenced by transportation, agriculture, and industrial activities. Data from TDC supports community health assessments and informs state and federal air quality management decisions, contributing to the broader goal of reducing exposure to harmful pollutants.
Environmental context
The Dalles is located in the Columbia River Gorge, a region with complex meteorology that can trap pollutants. The station's siting is designed to monitor ambient air representative of residential and mixed-use areas. Parameter coverage typically includes criteria pollutants such as ozone, particulate matter, and nitrogen dioxide, as required by EPA regulations. Reporting continuity is maintained through the Oregon DEQ's quality assurance protocols.
Frequently asked questions
The station is located at 1112 Cherry Heights Road in The Dalles, Oregon, United States.
As part of the EPA Air Quality System, this station typically measures criteria pollutants such as ozone, particulate matter, and nitrogen dioxide to assess compliance with National Ambient Air Quality Standards.
The station is operated by the Oregon Department of Environmental Quality (DEQ), which manages air quality monitoring across the state.
Air monitoring stations in the US operate under the Clean Air Act, with monitoring requirements defined by the EPA Air Quality System (AQS) and National Ambient Air Quality Standards (NAAQS).
The station provides continuous air quality data that supports public health advisories, regulatory compliance, and trend analysis for the Columbia River Gorge region, helping to protect community health.
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