The department shall serve written notice upon each owner of its intention to install a fish screen, and shall describe therein the distance downstream from the intake or in other manner the location of the screen, the access required, and the amount of water required for the bypass. The notice shall be served upon the owner in duplicate, and in such form that the original copy upon signature by the owner shall serve as an agreement to the installation of the screen or device under the terms therein, and shall require the owner to render such assistance, other than mechanical repair or replacement of parts, necessary to keep the screen or device in satisfactory operating condition. The hiring of additional labor shall not be required for such assistance.