The following frequencies were taken from a 2001 Police Call book. Because of the age of the book, I will not vouch for its current accuracy but you may want to "test" the frequencies indicated. Several of them are the same as listed above.
153.7400 Emery County Local Gov't
155.9850 Green River Local Gov't
156.0000 Castle Dale, Emery, Green River, Orangeville, Woodside Local Gov't
158.7450 Cleveland Local Gov't
451.7500 Cleveland Local Gov't
453.2000 Castle Dale Local Gov't
453.3750 Woodside Local Gov't
456.7500 Castle Dale, Green River, Huntington Local Gov't
458.2000 Castle Dale Local Gov't
458.3750 Castle Dale Local Gov't
156.2100 Castle Dale, Emery, Orangeville, Woodside Law Enforcement
151.0550 Woodside Streets & Roads
156.0750 Orangeville Streets & Roads
156.1600 Green River Medical (Amb)
~~~~~ooOoo~~~~~
155.6550 This is/was a State UHP frequency for Carbon, Emery, Logan, Grand, and San Juan Counties. I do not know if it is still valid.
155.5050 Was the State Wide common frequency.
155.7450 Was the State Wide car-to-car frequency.
As indicated above, please post here again once you have had a chance to "investigate" these frequencies.