1970 Chap. 0858. An Act Providing That Certain Licenses Granted By The Department Of Public Works To Place And Maintain Fill In Tidal Creek Running Off Sagamore Creek Connecting With The Neponset River In The City Of Quincy And To Fill, Pipe And Otherwise Relocate And Modify The Main Channel And Tidal Estuaries Of Said Sagamore Creek Be Irrevocable.