I can see from this USDA Map that the EAB has not been confirmed in Utah. There do appear to be infestations just on the eastern border of Utah in Colorado, so there is the possibility that the EAB is in Utah and may not have been reported yet. Local experts would know the latest information on this pest for your area. I am in North Carolina, so I suggest you contact your local County Extension Center to talk with an Extension Agent about this pest. To contact your local County Extension Center (click on your state, then scroll down the page to Cooperative Extension for contact information). 
Thanks for using Ask Extension. 
Debbie