Not sure what agency you're looking for, but I was in Golden a few weeks back briefly (road trip from the other side of the mountain) and had a couple of freqs loaded in for Fire purposes..
Town of Golden:
155.46
155.49/162.585
162.3
I have no idea if they are common or specific to Golden or what. They of course didn't have any calls in the hour I was there.
I did get a YNP frequency which the BC admin put into the database listed under Field (which is where I heard it).