Voters will be asked this summer to renew a 1/10th of 1 percent sales tax to fund operations and ongoing upgrades to the RiverCom Emergency Dispatch communications system.
The tax was originally approved in 2009 to help fund $12 million in improvements over 10 years.
It was scheduled to end this year under a sunset clause written into the original ballot measure.
The latest proposal makes the sales tax permanent. The original bill required revenues to pay only for capital projects but the latest measure expands that to include operations.
Chelan County Commissioners on Monday approved placing the measure on the August ballot.
Douglas County Commissioners are expected to adopt the same resolution.