A property owner is proposing to put in 160 residential units and a restaurant on a two-acre site at 3390 Washington St. In a letter of intent (LOI) sent to the Boston Development & Planning Agency, Chris Tracy, Senior Director of O'Neill and Associates, wrote that longtime owner and operator Robert Harrington of BMS Paper, wants to continue that business and expand upon the building. The LOI says that approximately 160 residential market rate and affordable units would be built. It is required by city law to build a certain amount of affordable units with any large project. The eatery would be a "moderately priced neighborhood style restaurant," and the total project would be in 199,000 sq. ft.