1. Ozone in Arizona Ira Domsky WRAP NOx Strategies Workshop July 28-29, 2003

2. Overview Monitoring Network Sources and Receptors Trends Statewide Phoenix Nonattainment Area Recommendation

3. Coconino Navajo Apache Graham Greenlee Cochise Pima Santa Cruz Yuma Pinal Maricopa Gila Yavapai La Paz Mohave Eager Sierra Vista Flagstaff Payson Safford Clifton Quartzsite Phoenix Lake Havasu City Winslow Tucson Apache Junction Nogales Prescott Yuma NGS CNM GCNP TONO BP CC CP FF FH GL HM MAME NP PAVE PPRV SP SSPXSS SU TE WC WP PFNP SNPE TCP CRAY TD TF TT AJ CG CB MCPA PA QUAZ HISD YUGF As of July 1, 2003 (This map is for general reference purposes only.) Ozone Monitoring Sites (Indian Reservations Not Included) Major Roadways Cities . .     County Boundaries Legend Ozone Monitoring Sites in Arizona

4. Coconino Navajo Apache Graham Greenlee Cochise Pima Santa Cruz Yuma Pinal Maricopa Gila Yavapai La Paz Mohave Eager Sierra Vista Flagstaff Payson Safford Clifton Quartzsite Phoenix Lake Havasu City Winslow Tucson Apache Junction Nogales Prescott Yuma NGS CNM GCNP TONO BP CC CP FF FH GL HM MAME NP PAVE PPRV SP SSPXSS SU TE WC WP PFNP SNPE TCP CRAY TD TF TT AJ CG CB MCPA PA QUAZ HISD YUGF As of July 1, 2003 (This map is for general reference purposes only.) Ozone Monitoring Sites (Indian Reservations Not Included) Major Roadways Cities . .     County Boundaries Legend Ozone Monitoring Sites in Arizona ? ? ? ? ?