contribute to the effect of prohibiting the commercial and industrial use (other than a use for a commercial purpose as authorized under section 460x–12 of this title) of all property within the boundaries of such area which is situated within the county or township adopting such bylaw or amendment;

are consistent with the objectives and purposes of this subchapter so that, to the extent possible under Michigan law, the scenic and scientific values of the lakeshore area will be protected;

are designed to preserve the lakeshore character of the area by appropriate restrictions upon the burning of cover, cutting of timber (except tracts managed for sustained yield), removal of sand or gravel, and dumping, storage, or piling of refuse and other unsightly objects or other uses which would detract from the natural or traditional lakeshore scene;

provide that no construction, reconstruction, moving, alteration, or enlargement of any property, including improved property as defined in this subchapter, within the lakeshore area shall be permitted, if such construction, reconstruction, moving, alteration, or enlargement would afford less than a fifty-foot setback from all streets measured at a right angle with the street line, and a twenty-five-foot distance from all contiguous properties. Any owner or zoning authority may request the Secretary of the Interior to determine whether a proposed move, alteration, construction, reconstruction, or enlargement of any such property would subject such property to acquisition by condemnation, and the Secretary, within sixty days of the receipt of such request, shall advise the owner or zoning authority in writing whether the intended use will subject the property to acquisition by condemnation; and

have the effect of providing that the Secretary shall receive notice of any variance granted under, and of any exception made to the application of, such bylaw or amendment.