(1) Rest ledges provided on pool vertical walls shall be at least 48 inches below the water surface and shall have a slip-resistant surface. The ledge shall slope one half inch in four inches toward the pool. Ledges shall have a minimum width of four inches and a maximum width of eight inches.

(2) Underwater seats or benches, when provided, shall conform to the following:

(a) the horizontal surface shall be 20 inches maximum below the waterline;

(b) underwater seats and benches shall not be used as the required pool entry/exit access;

(c) underwater seats and benches are allowed in conjunction with pool stairs;

(d) the leading edge of an underwater bench or seat shall be visually set apart from the surrounding pool surfaces by either a contrasting color or other visual image; and

(e) the seats and benches shall have slip-resistant surfaces.

(3) In any nonspa pool with a bench along the side of any wall, markings on the deck must be provided to indicate that there is a bench below the water surface by marking the deck in lettering that is at least four inches tall and in a contrasting color, stating "Caution: Bench".