1. Run II PMG Meeting - 4.20.061 of 13 V. Kuchler FESS ZEBRA MUSSEL TREATMENT PLAN RUN II PROJECT MANAGEMENT GROUP Victor Kuchler

2. Run II PMG Meeting - 4.20.062 of 13 V. Kuchler SOME BACKGROUND INFORMATION Shells First Observed at the Fermilab Site in November, 2004 Shells First Observed at the Fermilab Site in November, 2004 Actual Veligers (Larva) Have Probably Been Here for 4-5 Years Actual Veligers (Larva) Have Probably Been Here for 4-5 Years Originally Infested the Great Lakes Region from the St Lawrence Seaway Originally Infested the Great Lakes Region from the St Lawrence Seaway Also Confirmed in the Fox River System Also Confirmed in the Fox River System Can be Transferred by Birds, Boats and Fishermen and Tackle Can be Transferred by Birds, Boats and Fishermen and Tackle FESS ZEBRA MUSSEL TREATMENT PLAN

3. Run II PMG Meeting - 4.20.063 of 13 V. Kuchler 4 Yrs - 1.25” Storm Water Discharge Culvert at Casey’s Pond FESS ZEBRA MUSSEL TREATMENT PLAN

4. Run II PMG Meeting - 4.20.064 of 13 V. Kuchler ICW SYSTEM/TREATMENT FACTS Approximately 12 Miles of Distribution Piping Approximately 12 Miles of Distribution Piping 5% is > 14” Diameter 5% is > 14” Diameter 31% is 14” Diameter 31% is 14” Diameter 41% is 8” or 10” Diameter 41% is 8” or 10” Diameter 23% is 6” Diameter 23% is 6” Diameter 170 Valves and Hydrants 170 Valves and Hydrants Flushing Always Begins at Casey’s Pond and Extends Outward Through the Distribution System Flushing Always Begins at Casey’s Pond and Extends Outward Through the Distribution System Normal Flushing Uses 20 Sectors Normal Flushing Uses 20 Sectors Treatment Flushing Uses ~60 Sectors Treatment Flushing Uses ~60 Sectors FESS ZEBRA MUSSEL TREATMENT PLAN

5. Run II PMG Meeting - 4.20.065 of 13 V. Kuchler MARCH ’06 NON-TREATMENT ICW SYSTEM FLUSH Duration Was 11 Days (3 Crews/Day) Duration Was 11 Days (3 Crews/Day) Approximately 500 lbs of Shells Were Removed Approximately 500 lbs of Shells Were Removed 20 Sectors (Hydrants) Exercised 20 Sectors (Hydrants) Exercised Shell Size Indicated Maximum 2 Year Growth Shell Size Indicated Maximum 2 Year Growth Relatively Uneventful with No Pipe Ruptures or Valve Malfunctions Relatively Uneventful with No Pipe Ruptures or Valve Malfunctions Flushing Was Completed Without Interruption to On-Going Operations or Equipment Flushing Was Completed Without Interruption to On-Going Operations or Equipment FESS ZEBRA MUSSEL TREATMENT PLAN

6. Run II PMG Meeting - 4.20.066 of 13 V. Kuchler FESS ZEBRA MUSSEL TREATMENT PLAN

7. Run II PMG Meeting - 4.20.067 of 13 V. Kuchler MUSSEL REMOVAL AT CASEY’S POND Removal Process Began Mar 9 (14 Days) Removal Process Began Mar 9 (14 Days) Diver Used a Combination High-Pressure Hose and Vacuum System Diver Used a Combination High-Pressure Hose and Vacuum System Casey’s Pond Intake Structure, Intake Piping and Pump House Well Were Cleaned Casey’s Pond Intake Structure, Intake Piping and Pump House Well Were Cleaned 10,000 lbs of Shells Were Removed 10,000 lbs of Shells Were Removed 80% of the Shells Were Empty (ie Dead) 80% of the Shells Were Empty (ie Dead) Shells Reflected a Broader Size Range But the Largest is Still the 2 Year Size Shells Reflected a Broader Size Range But the Largest is Still the 2 Year Size FESS ZEBRA MUSSEL TREATMENT PLAN

8. Run II PMG Meeting - 4.20.068 of 13 V. Kuchler FESS ZEBRA MUSSEL TREATMENT PLAN

9. Run II PMG Meeting - 4.20.069 of 13 V. Kuchler ICW SYSTEM/TREATMENT FACTS Chemical to be Used is Nalco EVAC an Oxidizing Molluscicide Chemical to be Used is Nalco EVAC an Oxidizing Molluscicide EVAC has a 19 Hour Half-Life but is Not Dispersive and Decomposes Microbially EVAC has a 19 Hour Half-Life but is Not Dispersive and Decomposes Microbially Not Harmful to Fish or Other Wildlife Not Harmful to Fish or Other Wildlife Not Harmful to Piping or Equipment Not Harmful to Piping or Equipment Other Treatment Options Were Investigated But Eliminated Primarily Due to Application Requirements and System Size Other Treatment Options Were Investigated But Eliminated Primarily Due to Application Requirements and System Size Biggest Constraint to Effective Treatment is Water Temperature - Opt. 65 o F to 75 o F Biggest Constraint to Effective Treatment is Water Temperature - Opt. 65 o F to 75 o F FESS ZEBRA MUSSEL TREATMENT PLAN

10. Run II PMG Meeting - 4.20.0610 of 13 V. Kuchler FESS ZEBRA MUSSEL TREATMENT PLAN

11. Run II PMG Meeting - 4.20.0611 of 13 V. Kuchler PROPOSED TREATMENT FLUSHING PLAN Current Start Date Planned as May 8 Current Start Date Planned as May 8 May 9 - Complete Treatment Chemical May 9 - Complete Treatment Chemical May 10-11 - Treatment Process (26 hrs) May 10-11 - Treatment Process (26 hrs) May 12-23 - Best Case Duration (11) May 12-23 - Best Case Duration (11) May 12-Jun 1 - Worst Case Duration (21) May 12-Jun 1 - Worst Case Duration (21) May 12-26 - Most Likely Duration (15) May 12-26 - Most Likely Duration (15) Pre-Exercising of Valves is not a Good Idea Pre-Exercising of Valves is not a Good Idea Pipe and Other Repair Materials Have Been Stockpiled for Quick Response Pipe and Other Repair Materials Have Been Stockpiled for Quick Response Contracts are in Place to Support FESS Operations Personnel in Repair Efforts Contracts are in Place to Support FESS Operations Personnel in Repair Efforts FESS ZEBRA MUSSEL TREATMENT PLAN

12. Run II PMG Meeting - 4.20.0612 of 13 V. Kuchler FESS ZEBRA MUSSEL TREATMENT PLAN

13. Run II PMG Meeting - 4.20.0613 of 13 V. Kuchler Summary Flushing Experience to Date is Encouraging Flushing Experience to Date is Encouraging We are Well Prepared for the Process We are Well Prepared for the Process Water Temperature is Not Likely to be Optimal, However Any Shells Removed Will Be Helpful to the ICW System Water Temperature is Not Likely to be Optimal, However Any Shells Removed Will Be Helpful to the ICW System There is Evidence that the “Carrying Capacity of the System” (equilibrium) May be 2 Years There is Evidence that the “Carrying Capacity of the System” (equilibrium) May be 2 Years Experience is Gained with Each Flushing Cycle Experience is Gained with Each Flushing Cycle Future Flushing Cycles Will Include Treatment and Become Routine System Maintenance Future Flushing Cycles Will Include Treatment and Become Routine System Maintenance FESS ZEBRA MUSSEL TREATMENT PLAN