[Amended 3-26-1957]
Material for embankments and fills shall be such as will compact well and resist settlement and displacement. Organic matter, muck, unmixed clay and sand or similar materials shall not be used. Rock fills shall contain no voids. Deep earth fills shall be constructed in layers not exceeding 12 inches in depth. Such fills shall be suitably rolled and compacted if pavement is to be placed thereon the same season. Embankment slopes, unless otherwise ordered, shall have slopes not steeper than two horizontal to one vertical.