2010 Progress Report - International Joint Commission

More documents

Recommendations

Info

Progress Report 2010 VOC Concentration (ppbC) 90 80 70 60 50 40 30 20 Figure 25. Average Ozone Season 24-hour VOC Concentration for Sites within 500 km of the Canada–U.S. Border, 1997–2008 10 0 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Canada 70 60 VOC Concentration (ppbC) 50 40 30 20 10 0 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 United States Source: US EPA and Environment Canada 2010 36
Figure 26. Network of Monitoring Sites Used to Create Graphs of Ambient Ozone, NO x and VOC Levels Commitments Source: US EPA and Environment Canada 2010 The data in Figures 24 and 25 represent measurements for the ozone season (i.e. May through September). Although NO x and VOC concentrations have fl uctuated over recent years, because VOC concentrations are infl uenced by temperature, these fl uctuations are most likely due to varying meteorological conditions. Overall, the data indicate a downward trend in the ambient levels of both NO x and VOCs. The limited correspondence between composite ozone and precursor trends could refl ect the regional complexity of the problem as well as network limitations. Recently in the United States, there has been much investigation into the relationship between NO x emissions reductions under the NO x SIP Call and observed concentrations of ambient ozone in the states participating in the NBP. Generally, a strong association exists between areas with the greatest NO x emission reductions and downwind monitoring sites measuring the greatest improvements in ozone. This suggests that, as a result of the NBP, transported NO x emissions have been reduced in the East, contributing to ozone reductions that have occurred after implementation of the NBP. More information on the relationship between NO x emissions and ambient ozone concentrations in the eastern United States is available in the NO x Budget Trading Program 2008 Environmental Results report available at http://www.epa.gov/airmarkets/progress/NBP_3.html. 37
Page 1 and 2: Canada • United States Air Qualit
Page 3 and 4: TABLE OF CONTENTS INTRODUCTION . .
Page 5 and 6: LIST OF FIGURES AND TABLES FIGURES
Page 7 and 8: Progress Report 2010 Introduction B
Page 9 and 10: 3 Progress Report 2010
Page 11 and 12: Figure 1. Total Canadian Emissions
Page 13 and 14: y power plants and other sources (s
Page 15 and 16: Acid Deposition Monitoring, Modelli
Page 17 and 18: y 2007 the regions receiving greate
Page 19 and 20: The United States has various progr
Page 21 and 22: Following guidelines approved by th
Page 23 and 24: The Off-Road Compression-Ignition E
Page 25 and 26: Regulation 194/05 (Industry Emissio
Page 27 and 28: The NO x Budget Trading Program (NB
Page 29 and 30: Figure 13. Affected Units in CAIR N
Page 31 and 32: In addition, the EPA had previously
Page 33 and 34: The proposed reductions in air poll
Page 35 and 36: The compilation of the comprehensiv
Page 37 and 38: Figure 18. U.S. NO x Emission Trend
Page 39 and 40: Commitments Figures 20 and 21 show
Page 41: Ozone Concentration (ppb) 100 90 80
Page 45 and 46: (86% of electric utility emissions)
Page 47 and 48: emissions have also been successful
Page 49 and 50: The Transportation and Air Quality
Page 51 and 52: • VOC emissions are the most dive
Page 53 and 54: In the United States, there is an o
Page 55 and 56: As of 2008, over 300 NAPS air monit
Page 57 and 58: Table 3 (continued) MAJOR ROUTINE O
Page 59 and 60: Health Effects CANADA Health Canada
Page 61 and 62: Canadian Health and Exposure Tools
Page 63 and 64: such as premature mortality, hospit
Page 65 and 66: information and the risks posed by
Page 67 and 68: Ecological Effects Aquatic Effects
Page 69 and 70: Reduction in surface water calcium
Page 71 and 72: Declines in sulphate deposition lev
Page 73 and 74: etained within their catchments (la
Page 75 and 76: Environment (CDPHE) and the EPA to
Page 77 and 78: Figure 40. Lake and Stream Exceedan
Page 79 and 80: Figure 44. Ammonia Monitoring Netwo
Page 81 and 82: Figure 46. Major Atmospheric Transp
Page 83 and 84: APPENDIX A Canada-U.S. Air Quality
Page 85 and 86: APPENDIX B Appendix B: List of Acro
Page 87 and 88: PCB polychlorinated biphenyl SLAMS
Page 89 and 90: Notes Progress Report 2010 83
Page 91: To obtain additional information, p

2010 Progress Report - International Joint Commission

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?