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Avista to update public on Nine Mile Dam improvements
Spillway, other projects to begin summer 2010

Avista will hold an information meeting at Nine Mile Falls High School Tuesday, June 15 at 6:30 p.m., to update interested residents, property owners and customers on projects that will take place beginning this summer at the Nine Mile Dam and reservoir.


The major project at Nine Mile Dam is installation of a new rubber spillway that will eliminate the need for the wooden flashboards. Construction on the new spillway will begin this summer, and will require an extended drawdown of the reservoir while work is in progress.


The new spillway will consist of a rubber bladder, which will raise and lower a metal plate when inflated and deflated respectively. The spillway will be much more flexible and precise when managing the reservoir elevation.


Avista’s environmental and hydro operations staff will discuss the spillway project and future generation upgrades to the powerhouse. They will also discuss the environmental and recreation projects that are planned for the Nine Mile area.


The projects are part of Avista’s 50-year Federal Energy Regulatory Commission license to operate its five Spokane River hydroelectric facilities (Post Falls, Upper Falls, Monroe Street, Nine Mile, and Long Lake).


For more information about the meeting, call Speed Fitzhugh at (509) 495-4998.


Avista Corp. is an energy company involved in the production, transmission and distribution of energy as well as other energy-related businesses. Avista Utilities is our operating division that provides electric service to 356,000 customers and natural gas to 316,000 customers. Our service territory covers 30,000 square miles in eastern Washington, northern Idaho and parts of southern and eastern Oregon, with a population of 1.5 million. Avista’s primary, non-regulated subsidiary is Advantage IQ. Our stock is traded under the ticker symbol “AVA.” For more information about Avista, please visit www.avistacorp.com

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