IMPERIAL COUNTY EMISSION INVENTORY Reyes Romero May 28, 2008

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.

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

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

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

Emissions by California County

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.

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

ARB CEIDARS - Home Page

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.

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

Area-wide Sources

Upcoming Inventory Priorities 8-Hour Ozone SIP  Baseline Emissions Inventory – 2002  Emissions Inventory Forecast Hour PM10 SIP  Baseline Emissions Inventory – 2005  Emissions Inventory Forecast

8-Hour Ozone SIP - Baseline Emissions Inventory ROG

8-Hour Ozone SIP - Baseline Emissions Inventory ROG

8-Hour Ozone SIP - Baseline Emissions Inventory NOx

Thank You! Reyes Romero Office (760)