Reasonable Progress for Additional Class I Areas Class I Areas nearby Colorado

Reasonable Progress for Additional Class I Areas: The 309 path allows other Class I areas to be added to Colorado Plateau. The 309 strategies can be applied to these areas Declaration must be made in initial 309 SIP Analysis of strategy options and source/receptor relationships included in 2003 SIP submittal

WRAP Reports: Reasonable Progress for Class I Areas Outside Colorado Plateau Summary of Visibility Benefits of Annex Milestones versus Command & Control with uncertainty Class I areas on Colorado Plateau Best 20% days: The same or better in all 16 GCVTC Class I Areas Worst 20% days: The same or better in 15 of the 16 GCVTC Class I Areas (exception is Petrified Forest) Other Class I Areas in the contiguous WRAP Region Best 20% days: The same or better in all but one Class I Area (exception is Chiricahua Wilderness) Worst 20% days: The same or better in all Class I Areas Class I Areas in AR, MI, MN, MS, OK, and TX The same or better on the Best 20 % and Worst 20% Days

WRAP Reports (cont.) Presumptive glide path analysis for all Class I areas defined in slide 2 – late October 2002 Analysis of the effect of all 309 regional control strategies combined for comparison with presumptive glidepath – early 2003