1. Sacramento Overview Sierra Ozone Summit Larry Greene Air Pollution Control Officer Larry Greene Air Pollution Control Officer

2. We’re Geographically-Challenged Summer Ground-level Ozone (smog) NOX + VOC+Sunlight = 0zone =+ The Sacramento valley is like a bowl. Strong summer temperature inversions clamp a “lid” on the bowl, creating stagnant conditions that cause pollution to build until the inversion breaks and ocean breezes dilute and dissipate ground-level ozone air pollution.

3. National Rankings - 2007 Region is Consistently ranked in the Top 10 for ozone pollution 1. Los Angeles6. Sacramento 2. San Joaquin Valley 7. Baton Rouge 3. Southeast Desert, CA8. Dallas 4. Houston9. Philadelphia 5. Nevada County, CA 10. Ventura

4. FederalOzoneNon-attainmentArea 120 miles

5. Monitor Locations and Status

6. Air Quality Trends - Ozone Concentrations, 1980 - 2007 1 hour 31% improvement 8 hour 19% improvement

7. Emission Source Equivalents 1 TPD of VOC and NOx (Year 2019) 18,000 HD trucks 200,000 cars* 72 Locomotives (NOx only) 310 Gas Stations** 310 Gas Stations** (VOC only) * Base on average vehicle fleet mix ** No additional controls after 2005

8. 2002 Emission Inventory Districts State/Federal

9. Current Sacramento Regional NOx – 167 TPD

10. Current Sacramento Regional VOC – 136 TPD

11. NOx Inventory Forecast Sacramento Nonattainment Area

12. Controls in Sacramento Over 40 adopted rules affecting Residents and schools  water heaters,  house paints, varnishes and other solvents  wood burning appliances Industrial and commercial sources  Electric power plantsAutomobile refinishing  Auto repair shopsBakeries  Asphalt pavingCabinet shops  Boilers and water heatersLandfill gas  Boat manufacturingPrinting Agricultural sources  Agricultural burning  Confined animal feeding operations 10+ new or amended rules under consideration

13. 2008 Benefits From District VOC Rules Sacramento Region 63 Tons/Day

14. 2008 Benefits From District NOx Rules Sacramento Region 20 Tons/Day

15. Innovative Clean Air Strategies Incentive programs Other strategies

16. District Mobile Source Actions DMV School Bus Mitigation CMAQ EPA Other -Since 1998, 3784 engines, $88 million, 6.5 tons of NOx per day. ($13 million/ton per day)

17. Other Innovations - Raley’s trucks - Off road NOx devices - Propane generators - Idling devices - Switch engines - Cap Corridor trains

18. Nevada County Activities  Grass Valley in Sacramento’s Spare the Air ozone movies  Extended movies to 24 hours per day to capture Grass Valley peak ozone levels  Invited Northern Sierra APCD staff to participate in Sacramento planning efforts  Community invited to suggest additional control measures  Coordinate EPA grant to fund additional air monitoring equipment in Nevada County

19. Progress towards attainment Use model results to project attainment Colored lines show attainment dates for each part of the region

20. Questions???Questions???

22. How difficult is attainment in 2012? Effects of draconian strategies Need 40% reductions to attain. Attainment Goal