I am the provider of that feed. I can understand your interest in listening to just your local PD, but I think you would find that Folsom has VERY little traffic - especially emergency stuff - and would be quite boring to listen to. Not knocking the agency in any way - just the way it is.
If you hear a specific incident on their channel that you would like locked onto, send me a message here and if I'm able to do so, would park that scanner on their talkgroup for the duration of the event.
Another possibility would be contacting the agency and inquiring if they would be interested in providing an official feed of just their own radio traffic, as a service to their citizens.