§ 152.39 MAXIMUM SLOPE.
   The maximum vertical fall of earth on the parcel shall be six inches per foot (two horizontal to one vertical), for rip-rapped areas and four inches per foot (three horizontal to one vertical) for vegetation cover, unless otherwise approved by the Board. Slopes of other materials other than earth shall be at the safe angle of repose for the materials encountered.
(1991 Code, § 134.35)