§ 120-n. Maps and plans of sewers. Before taking any proceedings for
the construction of any sewer or of any system of sewers or of any
addition thereto or alteration thereof, such municipality or
municipalities acting severally or jointly shall cause to be made a map
and plan therefor, or an amendment of any map and plan previously
approved, as the case may be, and shall submit the same to the state
commissioner of health for his approval, and upon his approval the same
shall be filed in his office. A copy of such map and plan or of any
such amendment thereof shall also be filed in the office of the clerk of
each such municipality. Any such map and plan shall include
specifications of dimensions, connections and outlets or sewage disposal
works and may also include any existing sewer which it shall be found
feasible and proper to incorporate or include in the proposed system. No
work of any kind shall be done on or for the construction, extension,
reconstruction, removal or modification of any system of sewers or of
any sewer thereof until a map and plan covering the entire system shall
first have been duly approved and filed as above provided, and in the
execution of the construction, extension, reconstruction, removal or
modification of any system of sewers or of any sewer thereof no
deviations from the plans as finally approved and filed shall be made
until plans or descriptions adequately showing such deviations are first
approved and filed as above provided. The state commissioner of health,
in approving said map and plan or by a certificate supplementing any
such approval, may authorize such municipality or municipalities to
temporarily omit or defer the construction of any portion of any such
sewer or system of sewers. A copy or copies of his approval or of any
such supplemental certificate shall be certified to each such
municipality and filed in the office of the clerk thereof.