Owner, rental license holder, association, or managing agent. Citations follow the responsible party, not the resident who put a pizza box in the compost. For managed communities that usually means management, and most management agreements written before URCO are silent on who carries it.

Buildings with eight or more dwelling units must provide recycling and composting to residents. Multifamily is the hardest URCO category to execute, because you are asking hundreds of people you do not employ to change a daily habit. Trash room layout, kitchen caddies, and move in integration carry more weight than any resident email.