1. Notes on IPM Modeling Workshop (held 5/30/02) Larry Monroe, Ph.D. Southern Company MACT Working Group Meeting June 3, 2002

2. Workshop Agenda l IPM Overview - E. Lieberman l Model Plant Aggregation - E. Lieberman l Financial Assumptions - E. Lieberman l Hg Control Assumptions - M. J. Krolewski l Discussion - All

3. Discussion Topics l Hg control assumptions l Aggregation/parsing operations l Generations allowed l Year groupings l Retirement vs. off-line costs l Time span (2030 end vs. 2015)

4. Prioritized Hg Control Suggested Changes l Update ACI cost and performance for ESPc (no SC, limited performance) l Offer more menu choices for ACI l Update SCR-FGD co-control l Update base case co-control  Separate lignite from subbit.  Use latest ICR evaluations l Drop SNCR effects on Hg

5. Modeling Artifact: Effects of Fixed 80% ACI Control

6. Model Year Timing Run YearYrs. Represented 20052005-2007 20102008-2012 20152013-2017 20202018-2002 Proposed 20042004-2007 20082008-2011 20122012-2015

7. Model Year Timing Proposed Run YearYrs. Represented 20042004-2007 20082008-2011 20122012-2015