1. Urban Forest for Clean Air Demonstration Project a status report February 21, 2008

2. Project Goals Quantify net air quality benefits of our region’s urban forest Qualify the urban forest as an EPA- approved SIP measure

3. Ideal SIP Measure Scientific and model-based Evaluate entire package of effects Determine optimum level of canopy Comprehensive and massive tree planting plan

4. Proposed SIP Measure Ideal planting mix - favor low BVOC-emitting trees Current canopy coverage preserved and extended Replace failed trees in existing areas

5. Other Potential Benefits NO x and O 3 deposition Ambient temperature reduction Energy use avoidance

6. 350 Random Plots

7. Data Collection Access site Locate center Draw map Measure trees

8. Species Tree Health % dead branches Crown dimensions Hardscape Precise tree location Assessment Results

9. Most Abundant Tree Species

10. Results 7 million urban trees 102 different species 12 % canopy coverage 36 % ready for planting Room for 14 million more trees

11. Next Steps Secure SIP commitments SIP adoption and implementation Develop modeling for other benefits Publish Regional canopy assessment

12. Questions