1. IMPERIAL COUNTY EMISSION INVENTORY Reyes Romero May 28, 2008

2. Emissions Inventory What is it?  Is a comprehensive description from the sources of air pollution in a given region and a quantitative estimate of their emissions.

3. Emissions Inventory Users Local air districts ARB and other state agencies U.S. EPA Industry Consultants Academics Environmental Groups Public

4. Inventory Applications Emission Trend Studies State Implementation Plans (SIPs) Control Measure Development Regional Air Quality Modeling Public Information Request

5. Emissions Inventory Categories Stationary Sources / Aggregate Point Sources Area-wide Sources Mobile Sources Natural Sources

6. Emissions by California County

7. Stationary Sources …are large, fixed sources of air pollution and include power plants, rock quarries, factories, etc. Each district estimates the emissions from stationary sources.

8. Stationary Sources / Aggregate Point Sources Facility Annual Report Fuel Usage Production Rate AP-42 Factors Source Test Data Other Annual Emissions CEIDARS

9. ARB CEIDARS - Home Page

11. Area-wide Sources..are those where the emissions are spread over a wide area, such as consumer products, road dust, farming operations, architectural coating, etc.

12. Area-wide Sources Emissions Evaluation CARB or District Product Usage Data Survey Data AP-42 Emission Factors Specific Emissions Studies CEIDARS

13. Area-wide Sources http://www.arb.ca.gov/app/emsinv/dist/

14. Upcoming Inventory Priorities 8-Hour Ozone SIP  Baseline Emissions Inventory – 2002  Emissions Inventory Forecast - 2009 24-Hour PM10 SIP  Baseline Emissions Inventory – 2005  Emissions Inventory Forecast - 2010

15. 8-Hour Ozone SIP - Baseline Emissions Inventory ROG - 2002

16. 8-Hour Ozone SIP - Baseline Emissions Inventory ROG

17. 8-Hour Ozone SIP - Baseline Emissions Inventory NOx

19. Thank You! Reyes Romero Office (760) 482-4606 E-mail: reyesromero@imperialcounty.net