1. Sulfate Contributions to Regional Haze in the WRAP Region
Market Trading Forum Workshop on WRAP’s Sulfur Dioxide Annex
May 21, 2002

2. IMPROVE Monitoring Sites
Map of the IMPROVE sites
Spatial and Seasonal Patterns and Temporal Variability of Haze and its Constituents in the United States:  Report III
Principle Author: William C. Malm - May 2000

3.                                                                                           
NHSO4 Worst Days
Analysis from Spatial and Seasonal Patterns and Temporal Variability of Haze and its Constituents in the United States:  Report III ,Principle Author: William C. Malm, May Trends were generated using the procedures from EPA’s Draft Guidance for Tracking Progress Under the Regional Haze Rule, 9/27/01

4.                                                                                           
NHSO4 Median Days
Analysis from Spatial and Seasonal Patterns and Temporal Variability of Haze and its Constituents in the United States:  Report III ,Principle Author: William C. Malm, May Trends were generated using the procedures from EPA’s Draft Guidance for Tracking Progress Under the Regional Haze Rule, 9/27/01

5.                                                                                           
NHSO4 Best Days
Analysis from Spatial and Seasonal Patterns and Temporal Variability of Haze and its Constituents in the United States:  Report III ,Principle Author: William C. Malm, May Trends were generated using the procedures from EPA’s Draft Guidance for Tracking Progress Under the Regional Haze Rule, 9/27/01

6. Yellowstone NHSO4 Trend
                                                                             
Analysis from Spatial and Seasonal Patterns and Temporal Variability of Haze and its Constituents in the United States:  Report III ,Principle Author: William C. Malm, May Trends were generated using the procedures from EPA’s Draft Guidance for Tracking Progress Under the Regional Haze Rule, 9/27/01

7. Mesa Verde NHSO4 Trend
                                                                             
Analysis from Spatial and Seasonal Patterns and Temporal Variability of Haze and its Constituents in the United States:  Report III ,Principle Author: William C. Malm, May Trends were generated using the procedures from EPA’s Draft Guidance for Tracking Progress Under the Regional Haze Rule, 9/27/01

8. Chiricahua NHSO4 Trend
                                                                             
Analysis from Spatial and Seasonal Patterns and Temporal Variability of Haze and its Constituents in the United States:  Report III ,Principle Author: William C. Malm, May Trends were generated using the procedures from EPA’s Draft Guidance for Tracking Progress Under the Regional Haze Rule, 9/27/01

9. San Gorgonio NHSO4 Trend
                                                                             
Analysis from Spatial and Seasonal Patterns and Temporal Variability of Haze and its Constituents in the United States:  Report III ,Principle Author: William C. Malm, May Trends were generated using the procedures from EPA’s Draft Guidance for Tracking Progress Under the Regional Haze Rule, 9/27/01

10. Canyonlands NHSO4 Trend
                                                                             
Analysis from Spatial and Seasonal Patterns and Temporal Variability of Haze and its Constituents in the United States:  Report III, Principle Author: William C. Malm, May Trends were generated using the procedures from EPA’s Draft Guidance for Tracking Progress Under the Regional Haze Rule, 9/27/01

11. NHSO4 % of Light Extinction
3-year average contribution of sulfates to total aerosol reconstructed light extinction (%)
Spatial and Seasonal Patterns and Temporal Variability of Haze and its Constituents in the United States:  Report III
Principle Author: William C. Malm - May 2000