SJV Monitoring Project: 2024-2025 Preliminary Results

Presentation to California Air Resources Board (CARB)  (no abstract)

Impact/Purpose

This is a brief presentation to inform the California Air Resources Board about the monitoring results of the mobile air lab deployment over the winter of 2024-2025 In the San Joaquin Valley (SJV) in California. SJV community advocacy organizations have raised concerns about ammonia emissions and PM2.5 formation to EPA Region 9. In response to concerns, EPA conducted pilot air monitoring with the EPA Office of Research and Development’s (ORD’s) moveable monitoring laboratory in a community in SJV. A similar study has been done with the trailer in Yakima Valley, Washington. The pilot study assessed instrumentation and laboratory capabilities, with the aim of informing and providing a foundation for a longer-term monitoring project.

Citation

Wallace, W. SJV Monitoring Project: 2024-2025 Preliminary Results. California Air Resources Board (CARB), virtual, CA, October 01, 2025.