THE CALIFORNIA ALMANAC OF 

— 2013 E

This almanac was prepared an

Air Quality Planning 

California Air R

Principal 

Paul Cox, Andy Delao

This document has been reviewed 

California Air Resources Board. Approval do

reflect the views and policies 

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ARB Almanac 2013 – Preface 

PrefaceThis almanac was prepared and published by the Air Resources Board (ARB) staff to aid air quality professionals and the public in evaluating air quality in California (State). The ARB, as part of the California Environmental Protection Agency (CalEPA), is the State board responsible for achieving and maintaining healthful air quality in California. This responsibility is shared with local air districts and the United States Environmental Protection Agency (U.S. EPA).The following staff and managers of the Air Quality Planning and Science Division contributed to the production of this almanac: Jagjeet Arce, Stephen Francis, Martin Johnson, Vivian Lerch, LinYing Li, Elizabeth Melgoza, Chris Nguyen, Michael Redgrave, Jon Taylor, and Xijie Zhang. The project was approved by Kurt Karperos, Chief of the Air Quality Planning and Science Division. The project was managed by Karen Magliano, Assistant Division Chief, Carla Takemoto, Chief of the Area Source & Emission Inventory Programs Branch, Sylvia Vanderspek, Chief of the Air Quality Planning Branch, Stephen Zelinka, Manager of the Emission Inventory Development Section, Mena Shah, Manager of the Air Quality & Statistical Studies Section, and Gayle Sweigert, Manager of the Air Quality Analysis Section.This is the eleventh edition of this almanac which is updated annually as additional air quality and emission inventory data become available. If you find errors or have suggestions for improvements, please let us know. For general issues or issues related to air quality data, contact Paul Cox at (916) 327-7609 or pcox@arb.ca.gov. For issues related to emissions data, contact Andy Delao at (916) 324-7169 or adelao@arb.ca.gov.

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ARB Almanac 2013 – Table of Contents 

The California Almanac of Emissio

Chapter 1: Introduction Overview ........................................................................................... Organization ..................................................................................... California Facts and Figures ............................................................. Quick Facts ....................................................................................... Interpreting the Emission and Air Quality Statistics ...................... Meteorology’s Role in Air Quality ................................................... Sources of Emissions in California................................................... Air Quality Monitoring .................................................................... California Air Basins ........................................................................ Criteria Air Pollutants ...................................................................... National Ambient Air Quality Standards .................................. Ozone .................................................................................... Ozone National Area Designations ...................................... Particulate Matter (PM2.5) ...................................................

 Particulate Matter (PM2.5) Area Designations .....................

 Carbon Monoxide, Nitrogen Dioxide, and Sulfur Dioxide .. Air Quality Standards Table ................................................. Web Resources ..................................................................................Chapter 2: Current Emissions and Air Quality Introduction...................................................................................... Emission Sources .............................................................................. NOx Sources Statewide .............................................................. VOC Sources Statewide .............................................................. Directly Emitted Particulate Matter (PM2.5) ............................ Directly Emitted Particulate Matter (PM10) ............................. SOx Sources Statewide ............................................................... Ammonia Sources Statewide ...................................................... Diesel PM Sources Statewide ..................................................... 2012 Statewide Emission Inventory Summary ............................... 2012 Statewide Emission Inventory by Sub-Category....................

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ARB Almanac 2013 – Table of Contents 

 2011 Statewide Air Quality ............................................................. Ozone .......................................................................................... Particulate Matter (PM2.5) .........................................................

 Carbon Monoxide (CO), Nitrogen Dioxide (NO2), and Sulfur 

Chapter 3: Statewide Emission Trends and Forecasts Introduction...................................................................................... Emission Trends and Forecasts ................................................... Statewide Population and VMT ................................................. Emission Trends and Forecasts ......................................................... NOx .............................................................................................

 VOC ............................................................................................ Directly Emitted Particulate Matter (PM2.5) .............................

 Directly Emitted Particulate Matter (PM10) ..............................

 Diesel PM ................................................................................... Sulfur Dioxide ............................................................................ Ammonia ....................................................................................Chapter 4: Regional Trends and Forecasts

 Introduction...................................................................................... South Coast Air Basin ...................................................................... Introduction................................................................................ Emission Trends and Forecasts ................................................... Basinwide Trends/Population and Vehicle Miles Traveled (V Ozone Precursor Emissions .................................................... Directly Emitted PM2.5 Emissions ........................................

 Diesel PM Emissions ............................................................. Ammonia Emissions ............................................................... Ozone ......................................................................................... Particulate Matter (PM2.5) .........................................................

 Nitrogen Dioxide ........................................................................ San Francisco Bay Area Air Basin .................................................... Introduction................................................................................ Emission Trends and Forecasts ................................................... Basinwide Trends/Population and Vehicle Miles Traveled (V Ozone Precursor Emissions ....................................................

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ARB Almanac 2013 – Table of Contents 

 Directly Emitted PM2.5 Emissions .......................................

 Diesel PM Emissions ............................................................ Ammonia Emissions .............................................................. Ozone ........................................................................................ Particulate Matter (PM2.5) ........................................................

 Nitrogen Dioxide ....................................................................... San Joaquin Valley Air Basin .......................................................... Introduction............................................................................... Emission Trends and Forecasts .................................................. Basinwide Trends/Population and Vehicle Miles Traveled (V Ozone Precursor Emissions ................................................... Directly Emitted PM2.5 Emissions .......................................

 Diesel PM Emissions ............................................................ Ammonia Emissions .............................................................. Ozone ........................................................................................ Particulate Matter (PM2.5) ........................................................

 Nitrogen Dioxide ....................................................................... San Diego Air Basin ........................................................................ Introduction............................................................................... Emission Trends and Forecasts .................................................. Basinwide Trends/Population and Vehicle Miles Traveled (V Ozone Precursor Emissions ................................................... Directly Emitted PM2.5 Emissions .......................................

 Diesel PM Emissions ............................................................ Ammonia Emissions .............................................................. Ozone ........................................................................................ Particulate Matter (PM2.5) ........................................................

 Nitrogen Dioxide ....................................................................... Sacramento Metropolitan Area ....................................................... Introduction............................................................................... Emission Trends and Forecasts .................................................. Basinwide Trends/Population and Vehicle Miles Traveled (V Ozone Precursor Emissions ................................................... Directly Emitted PM2.5 Emissions .......................................

 Diesel PM Emissions ............................................................

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 Ammonia Emissions ............................................................... Ozone ......................................................................................... Particulate Matter (PM2.5) .........................................................

 Nitrogen Dioxide ........................................................................Appendix A: Air Quality Trend Data by Pollutant: Ozone, PM2.5, C

Appendix B: County Level Emissions and Air Quality by Air Basin..

Appendix C: Surface Area, Population, and Average Daily Vehicle MAppendix D: Natural Sources ...............................................................Appendix E: Lists of Figures and Tables for Chapters 1 through 4.....

Glossary of Air Quality and Emission Terms..........................................

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