At least four individuals were arrested Monday in police sweeps of Grass Valley and its homeless camps. Monday marked the first day of the Grass Valley Police Department’s sweeps of known homeless refuges that are expected to continue over the coming days, said GVPD Cpt. Rex Marks. “Our intent is to go to the areas where they are known to congregate or camp,” Marks said. “The intent is to make contact with as many as possible as fast as possible.” Nicholas Bell and Richard Potter were arrested at a homeless camp on East Bennett Street on warrants in Monday’s sweeps, …