Overview
La Grande - Ash St (LAS) is an air monitoring station in La Grande, Oregon, operated by the Oregon Department of Environmental Quality. It monitors ambient air quality as part of the US EPA Air Quality System network.
La Grande - Ash St (LAS) is an air monitoring station located at 2806 N Ash Street in La Grande, Oregon, United States. It is operated by the Oregon Department of Environmental Quality and is part of the national ambient air quality monitoring network under the US EPA Air Quality System (AQS). The station serves the Union County area, providing data on criteria pollutants to assess compliance with National Ambient Air Quality Standards (NAAQS). As an air monitoring station, LAS contributes to the regulatory framework established by the Clean Air Act. The station likely measures one or more criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), carbon monoxide, sulfur dioxide, nitrogen dioxide, or lead. The Oregon Department of Environmental Quality ensures that monitoring methods follow EPA-approved protocols, and data is reported to the AQS database for public access and regulatory decision-making. The environmental significance of this station lies in its role in tracking air quality trends in eastern Oregon, a region influenced by agricultural activities, wildfires, and transportation emissions. Continuous monitoring helps protect public health and supports state implementation plans for attaining and maintaining air quality standards. The data also contributes to regional air quality assessments and community awareness.
Environmental context
La Grande is situated in the Grande Ronde Valley in northeastern Oregon, surrounded by the Blue Mountains. The area experiences a semi-arid climate with cold winters and warm summers. Air quality can be affected by seasonal wildfires, agricultural burning, and wood stove emissions during winter inversions. The monitoring station provides critical data on particulate matter and ozone, helping to assess the impact of these sources and inform local air quality management strategies.
Frequently asked questions
The station is located at 2806 N Ash Street in La Grande, Oregon, United States.
As an air monitoring station, it likely measures criteria pollutants such as ozone, particulate matter, carbon monoxide, sulfur dioxide, nitrogen dioxide, or lead, following EPA protocols.
The station is operated by the Oregon Department of Environmental Quality.
Air monitoring stations in the US operate under the Clean Air Act and are part of the EPA Air Quality System (AQS) network, which sets standards for monitoring methods and data reporting.
Monitoring helps track pollutants from sources like wildfires, agriculture, and winter inversions, protecting public health and supporting state air quality management plans.
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