Island Lake Reservoir Technical Committee Meeting

1. Island Lake Reservoir Technical Committee Meeting February 16, 2012

2. Welcome and Introductions • Current and Forecasted Weather Conditions – National Weather Service • Island Lake Reservoir Operations Data – Minnesota Power • Review and Discuss Normal and Dry Operating Plan Aspects • Determine Course of Action • Discuss Composition of Decision Making Group • Set Next Meeting Date • Q & A

3. Current and Forecasted Weather Conditions Steve Gohde National Weather Service Observing Program Leader

4. Island Lake Reservoir Operations Data Nora Rosemore Minnesota Power Hydro Operations Superintendent

5. Island Lake Reservoir 2012 40.00 3000 Elevation 39.00 Full 38.00 2500 Target 37.00 Trigger to match 36.00 inflow Dry Cond. Lower 35.00 2000 Target 34.00 Dry Cond. Upper Target 33.00 Flow (cfs) Elevation Adjusted Dry 1500 Condition Target 32.00 Alden 31.00 Discharge 30.00 1000 Normal Condition 29.00 Minimum Flow 28.00 Dry Condition 500 Minimum flow 27.00 26.00 25.00 0 1/1/12 2/1/12 3/1/12 4/1/12 5/1/12 6/1/12 7/1/12 8/1/12 9/1/12 10/1/12 11/1/12 12/1/12 At the December 2011 meeting, the drawdown target was reduced by 2.5 feet (the maximum)

7. Spring Rain Determines Refill • 2003-04 (Blue) and 2006-07 (Orange) = Conditions were as bad as or worse than they are currently, yet spring rains were enough to refill near target date • 2009-10 (Red) and 2010-11 (Green) = Conditions were at or above normal, yet spring rains were not enough to fill reservoir by target date

8. Review and Discuss Normal and Dry Operating Plan Aspects Determine Course of Action

9. Discuss Composition of Decision Making Group Bonny Carlson Minnesota Power Renewable Operations Manager

10. Questions?