2003 Air Quality Management Plan

The South Coast Air Quality Management District Governing Board adopted the 2003 Air Quality Management Plan (AQMP) on August 1, 2003

The South Coast Air Quality Management District Governing Board adopted the 2003 Air Quality Management Plan (AQMP) on August 1, 2003.  The 2003 AQMP updates the attainment demonstration for the federal standards for ozone and particulate matter (PM10); replaces the 1997 attainment demonstration for the federal carbon monoxide (CO) standard and provides a basis for a maintenance plan for CO for the future; and updates the maintenance plan for the federal nitrogen dioxide (NO2) standard that the South Coast Air Basin (Basin) has met since 1992.

This revision to the AQMP also addresses several state and federal planning requirements and incorporates significant new scientific data, primarily in the form of updated emissions inventories, ambient measurements, new meteorological episodes and new air quality modeling tools.  The 2003 AQMP is consistent with and builds upon the approaches taken in the 1997 AQMP and the 1999 Amendments to the Ozone SIP for the South Coast Air Basin for the attainment of the federal ozone air quality standard.  However, this revision points to the urgent need for additional emission reductions (beyond those incorporated in the 1997/99 Plan) from all sources, specifically those under the jurisdiction of the California Air Resources Board and the U.S. Environmental Protection Agency which account for approximately 80 percent of the ozone precursor emissions in the Basin. 

For information about the 2003 AQMP, contact Joe Cassmassi  

Format of This Document

This document is organized into ten chapters, each addressing a specific topic.  Each of the chapters are summarized below. Each document (Chapter or Appendix) is a separate (PDF) file. The size of the file is shown next to each link. Some of the documents are very large (greater than 1MB)   
Table of Contents (91kb)
Note: The Table of Contents shows the contents of each chapter, but is not hyperlinked 

Executive Summary


1. Introduction  (280kb)

2. Air Quality and Health Effects (717kb)

Chapter 2, “Air Quality and Health Effects,” discusses the Basin’s air quality in comparison with the federal and state air pollution standards and presents summary information on health effects of various pollutants.

3. Base Year and Future Emissions (109kb)

Chapter 3, “Base Year and Future Emissions,” summarizes recent updates to the emissions inventories, estimates current emissions by source and pollutant, and projects future emissions with and without controls.

4. AQMP Control Strategy (373kb) 

Chapter 4, “AQMP Control Strategy,” presents the attainment strategies.

5. Future Air Quality (304kb)

Chapter 5, “Future Air Quality,” describes the modeling approach used in the AQMP and summarizes the Basin’s future air quality projections with and without controls.

6. Clean Air Act Requirements (207kb)

Chapter 6, “Clean Air Act Requirements,” discusses specific federal and state requirements as they pertain to the 2003 AQMP and demonstrates compliance with the requirements.

7. Implementation (174kb)  

Chapter 7, “Implementation,” presents the implementation schedule of the various control measures and delineates each agency’s area of responsibility.

8. Future Air Quality – Desert Nonattainment Area (185kb)

Chapter 8, “Future Air Quality - Desert Nonattainment Areas,” demonstrates compliance with the Federal Clean Air Act requirements pertaining to the Coachella Valley.

9. Contingency Measures (89kb)  

Chapter 9, “Contingency Measures,” presents contingency measures as required by the federal CAA .

10. Looking Beyond Current Requirements (149kb)  

Chapter 10, “Looking Beyond Current Requirements”, discusses uncertainties associated with the technical analysis provided in the AQMP; and presents a preliminary analysis regarding the new Federal PM2.5 and 8-hour ozone ambient air quality standards.   

Glossary (87kb)


I Health Effects (228kb)

II Current Air Quality (1.3MB)

III Base and Future Year Emission Inventories

Appendix III main document (509kb)

Attachment A, Annual Average Emissions by Major Source Category (160kb)

Attachment B, Summer Planning Emissions by Major Source Category (144kb)  

Attachment C, Winter  Planning Emissions by Major Source Category (132kb)  

Attachment D, Top 300 SCAB VOC and NOX Producers in 1997 (93kb) 

Attachment E,  On-Road Emissions by Vehicle Category

Attachment F, Emissions from Diesel Fuel, by Major Source Category (70kb)

IV-A District’s Stationary and Mobile Source Control Measures (525kb)

IV-B Proposed State and Federal Strategy for the California State Implementation Plan Link to external website.
Note: this link will take you to the California Air Resources Board (CARB) website

IV-C Regional Transportation Strategy and Control Measures (547kb)

V Modeling and Attainment Demonstrations

Appendix V main document (3.9MB)
Appendix A to Appendix V, UAM Base Year Model Performance Statistics and Graphical Evaluation (5.6MB).
Attachments 1-6 (600kb)
(Modeling Protocol, Expert Panel  Modeling Critiques, Mid-Course Modeling Reviews, CEPA Source Level Emissions Reduction Summaries for 2006 & 2010, including annual and planning inventories)
Attachment 7 CalGrid Ozone Simulation (983kb)

Other Important AQMP Documents

Socioeconomic Report:

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