1. Ozone Monitoring Issues & Opportunities
Ozone Transport Commission
MANE-VU Committee Meeting
September 24, 2014
Washington, DC
Will Ollison
1220 L Street, NW • Washington, DC •

2. Recommendations
States should ask that EPA allow adjustment of O3 design values (DVs) to account for actual population dose (as allowed for PM design values) to eliminate over-regulation of high altitude (> 1000 feet) locations
Similarly, states should lower O3 monitor inlets within allowed 2-15 meter heights above grade to adjust DVs to more accurately reflect typical 1-2 meter above grade population breathing zone exposures outdoors
States should also ask that EPA allow similar DV adjustment (ca. – 15%) of mandated 10 meter CASTNET inlet height O3 DVs to 2 meter values to reflect typical population breathing zone exposures outdoors
1220 L Street, NW • Washington, DC •

3. High Elevation O3 Monitors ( > 1000 feet)
● 14,100 ft
DV cut 28 ppb
● ,000 ft
DV cut ppb
● ft
DV cut ppb
● ft
DV cut ppb
● ft
DV cut 5-9 ppb
● ft
DV cut 2-4 ppb
1220 L Street, NW • Washington, DC •

4. O3 Monitor Inlet Heights Above Grade
1220 L Street, NW • Washington, DC •