City of Loveland snow plows

I seen the snow plows out this morning and being curious I entered the frequency of 158.74500 into the scanner from the database and I heard nothing. I used the PL tone too so not sure if they changed tones. Does anyone know if that frequency is used for the snow plows in Loveland? Is it ever active at all?

http://www.radioreference.com/apps/db/?ctid=275

I saw a trash truck/snowplow combo. is there a freq for trash pickup?

No idea.