Fills shall be constructed in layers. The loose thickness of each layer of fill material before compaction shall not exceed eight inches (8"). Completed fills shall be stable masses of well integrated material bonded to adjacent materials and to the materials on which they rest. Fills shall be competent to support anticipated loads and be stable at the design slopes shown on the plans. Proper drainage and other appropriate measures shall be taken to ensure the continuing integrity of fills. Earth materials shall be used which have no more than minor amounts of organic substances and have no rock or similar irreducible material with a maximum dimension greater than twelve inches (12"). The placement of larger rock may be permitted when the geotechnical engineer or civil engineer competent to do so properly devises a method of placement, continuously inspects its placement and approves the fill stability. The following conditions shall also apply:
(A) Prior to issuance of the grading permit, potential rock disposal areas shall be delineated on the grading plan.
(B) Rock sizes greater than twelve inches (12") in maximum dimension shall be two feet (2') or more below finish grade, measured vertically.
(C) Rocks shall be placed so as to assure filling of all voids with fines. (Ord. 1523, 4-11-1995)