(A) Tanks more than one foot above the ground shall have a firm foundation and supports of noncombustible materials, bases of which shall rest below the frost line.
(B) Unprotected steel as a support for tanks shall not be permitted. No combustible materials shall be permitted under or within ten feet of any storage tanks except stairways to and walks on top which shall be incombustible.
(1980 Code, § 27.019) Penalty, see § 98.999