In wake of the horrific gas explosions in Lawrence, Andover and North Andover, a trio of Boston City Councilors are calling for an examination of the city's gas safety infrastructure. District 6 City Councilor Matt O'Malley, District 2 City Councilor and At-Large City Councilor Ayanna Pressley, filed the order to hold a future hearing at Wednesday's City Council meeting. For O'Malley, it continues his pursuit to make sure the city's gas lines are safe. In 2016, as chair of the council's Environment, Sustainability and Parks Committee, O'Malley led the passing of a city law that would reduce gas leaks, improve safety, help the environment and lessen the cost of gas. But it has not been implemented due to gas company National Grid's lawsuit opposing its implementation.