Russo Development has continued its multifamily efforts in Kearny, the Carlstadt-based real estate firm announced Thursday.The company said it has opened 280 units at Vermella West, the first phase of a 548-unit apartment community along the Passaic River. Construction began at the 135 Passaic Ave. project in summer 2017 and occupancy began last month. More than 25 percent of the residences have already been leased, Russo said.