No billboard shall have a sign area of more than eight hundred sixteen (816) square feet or shall be no more than seventeen feet by forty-eight (17' x 48') feet on each side of the billboard;

Only free standing billboards are permitted. No billboards shall be permitted to be attached to any building;

Billboards shall have no more than two (2) signs on the front and on the back of the billboard;

A minimum front yard setback for a free standing billboard shall be thirty (30') feet, except that where the lot on which the billboard is located adjoins a residential zone, the billboard shall be set back at a minimum of fifty (50') feet from a residential structure;

There shall be no more than one (1) free standing billboard per lot;

The minimum side and rear setbacks for free standing billboards shall conform to the minimum setbacks for accessory structures in the applicable zone, except as modified by this section;

The height of the billboard, including stanchions, shall comply with the height limitation for principal structures in the applicable zone, provided that where a billboard is within seventy-five (75') feet of a residential structure the maximum permitted height shall be fifty-seven (57') feet;

A minimum clearance of fifteen (15') feet from grade to the bottom of billboard must be provided, however, except that where a billboard is within seventy-five (75') feet of a residential structure, a minimum clearance of thirty (30') feet shall be required and a maximum clearance of forty (40') feet from grade to the bottom of the billboard shall be permitted;

Billboards shall be supported by vertical stanchions. Billboards supported on platforms with lattice work supports shall be prohibited;

All billboards shall comply with subsections 21A-13.1(b), (c), (d)(1), (d)(2), (d)(3), (d)(4), (d)(5), (d)(6) and (d)(7).