Overview
Olancha-Well 404 is an air monitoring station in Olancha, California, operated by the Great Basin Unified APCD. It provides ambient air quality data for the region.
Olancha-Well 404 is an air monitoring station located in Olancha, California, approximately 0.5 miles west of the town. It is part of the air quality monitoring network managed by the Great Basin Unified Air Pollution Control District (APCD), which oversees air quality in Inyo County and surrounding areas. The station contributes to the US EPA Air Quality System (AQS) network, supporting compliance with National Ambient Air Quality Standards (NAAQS). The station is operational and reported a last sample date of June 30, 2025. While specific parameters measured are not detailed, typical monitoring at such stations includes criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), and nitrogen dioxide. The Great Basin Unified APCD focuses on regional air quality challenges, including dust from dry lakebeds and emissions from local sources. Located in the Owens Valley near the Sierra Nevada, Olancha-Well 404 helps monitor air quality in a rural area influenced by both natural and anthropogenic sources. The data supports public health protection and regulatory compliance, providing valuable information for residents and environmental agencies in the region.
Environmental context
Olancha-Well 404 monitors air quality in the Owens Valley, a region prone to dust events from dry lakebeds like Owens Lake. The station's siting near a well and rural road provides representative sampling of local air quality. Parameter coverage typically includes criteria pollutants, with reporting continuity maintained by the Great Basin Unified APCD. The data supports the US EPA AQS network and helps assess compliance with NAAQS.
Frequently asked questions
Olancha-Well 404 is located approximately 0.5 miles west of Olancha, California, in Inyo County. The station is situated near a well in a rural area of the Owens Valley.
Air monitoring stations like Olancha-Well 404 typically measure criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, and sometimes sulfur dioxide and carbon monoxide.
The station is operated by the Great Basin Unified Air Pollution Control District (APCD), which is responsible for air quality management in Inyo, Mono, and Alpine counties in California.
Olancha-Well 404 operates under the US EPA Air Quality System (AQS) network, supporting compliance with the National Ambient Air Quality Standards (NAAQS) established by the Clean Air Act.
Olancha is near Owens Lake, a major source of dust emissions. Air monitoring helps track particulate matter levels and protect public health, while also providing data for regulatory compliance and dust mitigation efforts.
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