| 1.0 | OVERVIEW |
| 2.0 | ACID PRECIPITATION |
| 2.1 | Progress Toward Acid Rain Control in the United States |
| 2.2 | Need for Continuing Support of the National Atmospheric Deposition Program/National Trends Network (NADP/NTN) by the United States Geological Survey (USGS) |
| 2.3 | Trends in Acid Rain Precursors |
| 2.4 | U.S. EPA Nitrogen Oxides Emission Reduction Program - Final Rule for Phase II, Group 1 and Group 2 Boilers - (Coal Fired Utilities) |
| 2.4.1 | Need for Reductions in NOX Emissions |
| 2.5 | Ozone |
| 2.6 | Acid Precipitation |
| 2.6.1 | First Stage of the NOX Reduction Program |
| 2.6.2 | Second Stage of the NOX Reduction Program |
| 2.6.3 | Compliance and Deadlines |
| 2.6.4 | Addition of Limited Cap and Trade Option |
| 2.7 | The Acid Rain Issue in Canada |
| 2.7.1 | Deposition |
| 2.7.2 | Environmental Response |
| 2.7.3 | The Future |
| 3.0 | STANDARDS SETTING |
| 3.1 | Overview |
| 3.2 | Standards & Guidelines |
| 3.3 | Health Impacts: Statement on Asthma and Air Pollution |
| 3.4 | Ozone |
| 3.4.1 | Formation |
| 3.4.2 | U.S. EPA Proposed Ozone Standard |
| 3.4.3 | Update on the Ozone Transport Assessment Group |
| 3.4.4 | Ozone Transport in the Ozone Transport Assessment Group Domain |
| 3.4.5 | Status of Ozone Transport Assessment Group |
| 3.4.6 | Canadian Actions on the Revisions of Ozone Objectives |
| 3.4.7 | Current Canadian Ground-Level Ozone Objectives |
| 3.4.8 | Current Canadian Air Quality with Respect to Ground-Level Ozone |
| 3.4.9 | North American Research Strategy for Tropospheric Ozone (NARSTO) |
| 3.4.10 | Historical Summary |
| 3.4.11 | Current Developments |
| 3.5 | Particulate Matter |
| 3.5.1 | Formation |
| 3.5.2 | EPA Proposed Particulate Standard |
| 3.5.3 | Monitoring Requirements |
| 3.5.4 | Current Canadian Particulate Matter in Air Objectives |
| 3.5.5 | Current Canadian Air Quality with Respect to Particulate Matter in Air |
| 3.5.6 | Particulate Matter in Air: The Science |
| 4.0 | CLIMATE CHANGE |
| 4.1 | Overview |
| 4.2 | Control Scenarios |
| 4.2.1 | The International Management Mechanism |
| 5.0 | JOINT MANAGEMENT OF TRANSBOUNDARY REGIONAL AIR QUALITY |
| 5.1 | Overview: What Will Be the Air Management Framework of the Future? |
| 5.2 | Single Issue Management Regimes |
| 5.2.1 | Management of Ground-level Ozone |
| 5.2.2 | Management of Acidifying Emissions |
| 5.3 | Multi-Pollutant, Multi-Effect Management Regimes |
| 5.3.1 | U.S. Joint Implementation Program for Ozone, Particulates and Regional Haze |
| 5.3.2 | Canadian Regional Smog Management Plans |
| 5.4 | Observations |
| 5.5 | Great Lakes Air Quality Partnership |
| 5.6 | The Paso del Norte Air Quality Task Force |
| 5.7 | B.C./WA Environmental Cooperation Council Activities |
| 5.7.1 | Germane Activities |
| 5.8 | North Eastern States for Coordinated Air Use Management (NESCAUM) and the Eastern Canadian Transboundary Smog Issue Group (ECTSIG) Joint Commission for Environmental Cooperation (CEC) Project |
| 5.8.1 | Objectives for the Pilot Project |
| 5.8.2 | Deliverables |
| 5.8.3 | Timeframe |
| 5.9 | Commission for Environmental Cooperation |
| 5.9.1 | Continental Pollutant Pathways Report |
| 5.9.2 | The Program on Sound Management of Chemicals |
| 5.10 | New U.S. Mexico Program Directed at Health and Environment Improvements on Common Border |
| Table 1. | Estimated Regional Reductions Necessary to Mitigate Various Environmental Effects |
| Table 2. | Comparison of Various National and International Air Quality Tools |
| Table 3. | Relationship Between Changes in Concentrations of Air Pollutants and Percentage Change in Human Health Indicator |
| Table 4. | Subjects Per Million Population Affected by 3-Day Exposure to Specific Concentrations of PM10 |
| Table 5. | Comparison of Selected National and International Targets Ozone |
| Table 6. | Comparison of Selected National and International Targets Sulfur Dioxide |
| Table 7. | Comparison of Ambient Fine and Coarse Mode Particles |
| Table 8. | Ambient Particulate Matter Standards and Objectives in Canada and the U.S. Permissible Pollutant Concentrations (micrograms per cubic metre) |
| Figure 1. | Pollution Sources |
| Figure 2. | Current CASTNet Sites near the U.S.-Canada Border with a 1989-1995 Trend Record |
| Figure 3. | Change in SO2 Concentration from 1989 through Sept. 1995 (As percent of mean 1989 site model outputs) |
| Figure 4. | Change in SO4 Concentration from 1989 through Sept. 1995 (As percent of mean 1989 site model outputs |
| Figure 5. | Change in Total Sulfur Concentration from 1989 through Sept. 1995 (As percent of mean 1989 site model outputs) |
| Figure 6. | Change in Total Nitrogen Concentration from 1989 through Sept. 1995 (As percent of mean 1989 site model outputs) |
| Figure 7. | Change in Ozone Concentration from 1989 through Sept. 1995 (As percent of mean 1989 site model outputs) |
| Figure 8. | Smooth Estimates of Trends in SO2 Concentrations (g/m3) at CASTNet Sites Closest to Canada [includes 4thQ 1995 data where available] [R2 for site models shown in legend] |
| Figure 9. | U.S. NOX Emissions in 1992 |
| Figure 10. | VOC Emissions Trends |
| Figure 11. | Counties Not Meeting EPA's Ozone Proposal Standard (* hour, average 3rd maximum, 0.08 ppm) |
| Figure 12. | Source Regions of Influence 1991 OTAG Episode Transport Vectors & Normalized Residence Time 1991 OTAG Episode |
| Figure 13. | Source Regions of Influence 1993 OTAG Episode Transport Vectors & Normalized Residence Time 1993 OTAG Episode |
| Figure 14. | Source Regions of Influence 1995 OTAG Episode Transport Vectors & Normalized Residence Time 1995 OTAG Episode |
| Figure 15. | Average Number of Days when 1h Ozone AQO (82 ppb) was Exceeded (1987 - 1992) at Selected Cities |
| Figure 16. | PM10 Concentrations Correlated with Population |
| Figure 17. | Average Daily PM10 Concentrations for Major Canadian Cities |
| Figure 18. | Average Daily PM2.5 Concentrations for Major Canadian Cities |
| Figure 19. | Source Regions (Emission Management Areas) For Smog |
| Figure 20. | Source Regions (Emission Management Areas) For Acid Rain |
| Figure 21. | Various Options for Defining AOI's with Preliminary Pros and Cons |
| AELs | alternative (higher) emissions limits |
| AIRS | Aerometric Information Retrieval System |
| ANC | Acid Neutralizing Capacity |
| AOI(s) | Areas of Influence |
| AOV(s) | Areas of Violation |
| AQO | Air Quality Objective |
| ARB | Air Resources Board |
| CAAA | Clean Air Act Amendments |
| CASAC | Clean Air Scientific Advisory Committee |
| CASTNet | Clean Air Status and Trends Network |
| CEC | Commission for Environmental Cooperation |
| CEPA | Canadian Environmental Protection Act |
| CFCs | chlorofluorocarbons |
| CO2 | carbon dioxide |
| COP | Conference of Parties |
| DDT | Dichloro-Diphenyl-Trichlorethane |
| ECTSIG | Eastern Canadian Transboundary Smog Issue Group |
| EPA | Environmental Protection Agency |
| EPRI | Electric Power Research Institute |
| FERC | Federal Environmental Regulation Commission |
| FPAC | Federal/Provincial Advisory Committee |
| FY | Fiscal Year |
| IAQAB | International Air Quality Advisory Board |
| IPCC | Intergovernmental Panel on Climate Committee |
| JPAC | Joint Public Advisory Committee |
| LNB | low NOX burner |
| LRTAP | Long-Range Transboundary Air Pollution |
| NAAQS | National Ambient Air Quality Standards |
| NADP | National Atmospheric Deposition Program |
| NAFTA | North American Free Trade Agreement |
| NAPAP | National Acid Precipitation Assessment Program |
| NARSTO | North American Research Strategy for Tropospheric Ozone |
| NAWQA | National Water Quality Assessment Program |
| NESCAUM | Northeastern States for Co-ordinated Air Use Management |
| NOAA | National Oceanic and Atmospheric Administration |
| NO2 | Nitrogen Dioxide |
| NOX | Nitrogen Oxides |
| NRC | National Research Council |
| NSMP | National Smog management Plan |
| NTN | National Trends Network |
| OAQPS | Office of Air Quality Planning and Standards |
| OTAG | Ozone Transport Assessment Group |
| OTR | Ozone Transport Region |
| PM | particulate matter |
| RAMPs | Regional Air Management Partnerships |
| RAP(s) | Remedial Action Plan(s) |
| RIPs | Regionally Integrated Plans |
| ROSA | Regional Ozone Study Area |
| RSMP | Regional Smog Management Plans |
| SO2 | Sulphur dioxide |
| SO4 | Particulate sulfate |
| SOMA | Sulphur Oxides Management Area |
| TSP | Total Suspended Particles |
| UAM | Urban Airshed Model |
| UK | United Kingdom |
| USGS | U.S. Geological Survey |
| VOCs | volatile organic compounds |
| WGAQOG | Working Group on Air Quality Objectives and Guidelines |
| WGSMC | Working Group on Sound Management of Chemicals |
| WHO | World Health Organization |