Section 88.16 - Notification requirements, engineering study(1) If a board takes any action which results in the hiring of an engineer to conduct a study that is related to the operation of a drain, or the district, the board shall send, as soon as possible, written notice of the action to all of the following: (a) The governing body of the city, village, or town that has jurisdiction over the area which is subject to the engineering study.(b) The governing body of the county that has jurisdiction over the area which is subject to the engineering study.(c) The governing body of any city or village that has extraterritorial jurisdiction over the area which is subject to the engineering study.(2) As soon as possible after the engineering study is completed, the board shall send written notice to the governing bodies which received notice under sub. (1) informing them of the study's completion and providing them information as to where the study may be reviewed.(3) A board's failure to notify under sub. (1) does not invalidate any decision made or action taken by the board.