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Alpine County Health Department, 75-B Diamond Valley Rd., Markleeville, CA 96120 Alpine County Board of Supervisors, Phone: (530) 694-2281 District 1: January Riddle, District 2: Ron Hames, District 3: Irvin Jim, District 4: Terry Woodrow, District 5: David Griffith Friday July 16, 2021 Potential Wildland Fire Smoke Impact on the Death Ride As of 2 PM today, smoke from several fires is clearly visible over Markleeville, Monitor Pass, and Ebbetts Pass areas. The fires include the Henry Fire, which is now reported to be >1,000 acres, and a smaller fire burning in the Pleasant Valley area. Air quality sensors in Markleeville report P 2.5 levels between 50-100, which puts these levels in the “Moderate” range. Actual levels at higher elevations over the passes are likely to be higher. It is difficult to predict conditions for the race tomorrow. However, it is safe to say there will still be smoke at some level still blowing through the area on Saturday. What advice do we have for participants and spectators? At these current levels, unusually sensitive persons should consider reducing prolonged or heavy exertion. This is typically a very small group of people and may not include anyone who is a participant in the Death Ride. However, spectators and volunteers are more likely to fit into this category. To view current data, go to: Real-time air quality map I PurpleAir Henry Fire: Public Health Brief Richard O. Johnson, M.D., MPH Nichole Williamson Public Health Officer HHS Director Office: [PHONE REDACTED], Ext 249 Office: [PHONE REDACTED] e-mail: [EMAIL REDACTED] 24/7/365 Emergency Contact Number Dispatch: [PHONE REDACTED], Ext 330 ---PAGE BREAK--- Alpine County Health Department, 75-B Diamond Valley Rd., Markleeville, CA 96120 Alpine County Board of Supervisors, Phone: (530) 694-2281 District 1: January Riddle, District 2: Ron Hames, District 3: Irvin Jim, District 4: Terry Woodrow, District 5: David Griffith Since most persons will not have access to current air quality readings during the Death Ride, the following chart can be helpful in visually assessing current conditions and recommendations. In addition, I have also attached an additional document titled “Levels of Health Concern from smoke (PM 2.5) in the air”, which outlines clear guidelines based on hourly and daily readings of air quality. We wish all a safe and enjoyable day at the Death Ride!