2001517_sw.doc

May 17, 2001

Blair Strong
Paine, Hamblen, et al
717 W. Sprague Avenue, Suite 1200
Spokane, WA 99201-3505

Doug Young
Avista Utilities—WWP
1411 E. Mission
PO Box 3727
Spokane, WA 99220-3727

John M. Eriksson
Stoel Rives LLP
One Utah Center
201 S. Main Street, Suite 1100
Salt Lake City, UT 84111-4904 Rodger Weaver
PacifiCorp
825 NE Multnomah, Suite 600
Portland, OR 97232

Barton L. Kline
Idaho Power Company
PO Box 70
Boise, ID 83707-0070

RE: Case Nos. AVU-E-01-8, IPC-E-01-17, UPL-E-01-1

On May 15, 2001, the Commission sent out a letter and attachments regarding the annual avoided cost adjustments. We have recently become aware that each party was not sent the appropriate attachments. Please find enclosed the correct attachments for each company. If you have any further problems please feel free to contact me or Rick Sterling. Sorry for any inconvenience that this may have caused you or your company.

Sincerely,

Brenda Sorrell
Legal Administrative Assistant

bls/L:avoidedcost_addendum

May 15, 2001
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