The Boston Planning Department board last week approved plans by the owner of the Bunker Hill Mall in Charlestown to replace the 99 - home of steak tips and a 1995 shooting that left four alleged mobsters dead - with 240 apartments.

Plans by New England Development call for an $85-million, six-story building to replace the 99 and some vacant land at Rutherford Avenue and Austin Street, possibly by 2028.

The proposal calls for 48 affordable units - 20% of the total - with 31 to be rented to people making no more than 70% of the Boston area median income , 17 to people making up to that level.…