Great Basin Unified Air Pollution Control District Particulate Matter (PM) Air Pollution Air Quality Levels - Health Concern Information What Is Particulate Matter? Where Does PM10 Come From? Does PM10 Affect Our View? What is being done to reduce PM10 Pollution? What Can You Do? How Do We Measure It?

Great Basin Unified Air Pollution Control District About Us History and Purpose Structure Funding Staffing Pollutants Major Sources of Air Pollution Major Past Policy Decisions Current and Upcoming Issues Reference Library Where Are We? Transparency © GBUAPCD. All Rights Reserved.

Great Basin Unified Air Pollution Control District Owens Lake Yesterday CalPuff Dust Plume Animations Owens Lake Yesterday updates at 8:00 AM Pacific Time. DISCLAIMER: The data presented here are not validated and are displayed for informational purposes only. Estimated daily sand flux totals may vary considerably from finalized site-specific sand flux data. PM10data is approximated and may differ from the true recorded PM10 value. Missed a dust report? Visit the Dust Report Archive Estimated Sand Flux (.csv) Estimated sand flux is calculated by summing hourly particle count and multiplying by the master sensit to sand catch ratio. Air Monitoring Data (.csv) Displayed map data are station hourly maximum TEOM PM10 value for the 24 hour period with hourly wind speed and direction during that hour. Below station hourly maximum TEOM PM10 value is the 24 hourly average TEOM PM10 value. Daily Surface Disturbance Reports: During the Phase 7 Dust Control Construction Period at Owens Lake, the Daily Surface Disturbance Report Database will be posted here. Final post (May 11, 2010) includes March activity. Questions, comments and suggestions © GBUAPCD. All Rights Reserved.

Great Basin Unified Air Pollution Control District How To Contact Us Email: info@gbuapcd.org Employee Directory GBUAPCD 157 Short St. Bishop, CA 93514 Phone: (760) 872-8211 © GBUAPCD. All Rights Reserved.

Great Basin Unified Air Pollution Control District Dust Control Status January 1, 2018 (Current) January 1, 2017 January 1, 2016 April 27, 2015 July 20, 2012 June 22, 2010 June 6, 2010 May 21, 2010 May 5, 2010 April 19, 2010 April 3, 2010 March 18, 2010 © GBUAPCD. All Rights Reserved.