The surface of all slopes more than three (3) feet in vertical height and steeper than 5:1 shall be covered with City approved erosion control blankets. Installation shall conform to the manufacturer's specifications. Deviations from this requirement shall be submitted in writing with an alternative plan for temporary erosion control. This plan shall be approved by the City Engineer.
Installation of the erosion control blankets or other approved devices or procedures shall be installed to the satisfaction of the City Engineer prior to acceptance of the rough grading.
The surface of all slopes more than three (3) feet in vertical height and steeper than 5:1 shall be covered with City approved erosion control blankets. Installation shall conform to manufacturer's specifications.
The surface of all slopes more than three (3) feet in vertical height and steeper than 5:1 shall be planted with ground cover plants. The ground cover shall be from flatted rooted cuttings, triangularly spaced at 12" O.C. Ground cover shall be selected from the following list:
Rosmarinus officinalis prostrate, Dwarf Rosemary
Baccharis pflularis "Twin Peaks", Dwarf Coyote Brush
Hypericum calycinum, St. Johnswort
Lonicera japonica halliana, Hall's Hardy Honeysuckle
Requests for substitutions shall be submitted in writing and shall be based upon climatic, ecological and site conditions. Substitutions shall be demonstrated to have rooting characteristics necessary for erosion control.