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Intro -- NATIONAL AIR QUALITY: STATUS AND TRENDS -- NATIONAL AIR QUALITY: STATUS AND TRENDS -- LIBRARY OF CONGRESS CATALOGING-IN-PUBLICATION DATA -- CONTENTS -- PREFACE -- Chapter 1: AIR QUALITY: MULTI-POLLUTANT LEGISLATION IN THE 110TH CONGRESS -- SUMMARY -- INTRODUCTION -- THE BUSH ADMINISTRATION'S PROPOSALS -- PROPOSED LEGISLATION AND LEGISLATIVE ACTION IN THE 110TH CONGRESS -- APPENDIX. COMPARISON OF MULTI-POLLUTANT CONTROL PROPOSALS -- Chapter 2: NATIONAL AIR QUALITY: STATUS AND TRENDS THROUGH 2007 -- HIGHLIGHTS -- AIR POLLUTION -- SIX COMMON POLLUTANTS -- GROUND-LEVEL OZONE -- PARTICLE POLLUTION -- LEAD -- TOXIC AIR POLLUTANTS -- ATMOSPHERIC DEPOSITION -- VISIBILITY IN SCENIC AREAS -- CLIMATE CHANGE AND AIR QUALITY -- INTERNATIONAL TRANSPORT OF AIR POLLUTION -- Chapter 3: PARTICULATE MATTER (PM2.5): IMPLEMENTATION OF THE 1997 NATIONAL AMBIENT AIR QUALITY STANDARDS (NAAQS) -- SUMMARY -- INTRODUCTION -- GEOGRAPHICAL AREA DESIGNATION PROCESS -- DEMONSTRATING ATTAINMENT WITH THE 1997 PM2.5 NAAQS -- RECENT ACTIONS AND THEIR IMPLICATIONS FOR ACHIEVING ATTAINMENT OF THE 1997 PM2.5 NAAQS -- CONGRESSIONAL ACTION RELATED TO PARTICULATES NAAQS IMPLEMENTATION -- CONCLUSION -- APPENDIX. IMPLEMENTATION OF THE 1997 PM2.5 NAAQS: TIMELINE AND DELAYS -- Chapter 4: 2006 NATIONAL AMBIENT AIR QUALITY STANDARD FOR FINE PARTICULATE MATTER (PM2.5): DESIGNATING NONATTAINMENT AREAS -- SUMMARY -- INTRODUCTION -- EPA'S 2006 CHANGES TO THE PARTICULATES NAAQS -- DESIGNATION OF GEOGRAPHICAL NONATTAINMENT AREAS -- DEMONSTRATING ATTAINMENT WITH THE 2006 PM2.5 NAAQS -- CONCLUSIONS -- APPENDIX A. COMPARATIVE TIMELINE FOR IMPLEMENTING THE 1997 AND 2006 PM2.5 NAAQS -- APPENDIX B. COMPARISON OF RECOMMENDED NONATTAINMENT AREAS FOR THE 2006PM2.5 NAAQS AND THE FINAL NONATTAINMENT DESIGNATIONS FOR THE 1997 PM2.5 NAAQS.