The Brihanmumbai Municipal Corporation (BMC) will deploy 10,000 staffers and set up 71 control rooms for immersion of Ganesh idols on September 28, the day of Anant Chaturdashi. There are 198 artificial and 69 natural immersion spots that will be used for the process, BMC said. "To ensure safety, 764 lifeguards and 48 motorboats have been deployed," BMC added.