You can learn about the history of the deliberations concerning the new area code by looking at the Public Service Commission web site. All of the documents issued by the PSC are found there. You will also see the comments from many citizens, the vast majority of which strongly oppose the overlay method.
Go to www.psc.utah.gov and then click on "385 Area Code Overlay."
If you haven't already done so, send your comments opposing the overlay to jsharvey@utah.gov.