1. Why Monitor Air Quality?
Leroy Williams
Gila River Indian Community

5. Why Air Monitoring?
Judge compliance with and/or progress made towards meeting ambient air quality standards
Activate emergency control procedures that prevent or alleviate air pollution episodes
Observe pollution trends throughout region, including non-urban areas
Provide a data base for
Research evaluation of effects: urban, land-use, and transportation planning
Development and evaluation of abatement strategies
Development and validation of diffusion models

6. Air Quality on reservation has important implications for
Quality of life
Culture and religion
Economic development
Other

7. One way to protect and assess air quality: develop ambient air monitoring program

8. GRIC DEQ Air Monitoring Program
Collected quality data for ozone and particulate matter since 2002
Three air monitoring stations
Sacaton
Casa Blanca
St Johns

9. AQI Colors EPA assigned specific color to each AQI category
Easier to understand community air pollution risk. Examples:
Orange = unhealthy for sensitive groups
Red = unhealthy for everyone