A. The erosion and sediment control handbook shall be used as a guide for the design and suitability of erosion and sediment control measures.
B. The faces of cut and fill slopes must be protected against damage by erosion and the methods utilized for each protection must offer effective erosion control prior to the beginning of, as well as during, the rainy season.
C. Where graded slopes are steeper than three feet horizontal to one foot vertical or are higher than ten feet, they shall be protected with a temporary soil stabilization measure such as jute matting or an equivalent mulch until planting is established.
D. The surface of all cut slopes higher than five feet and all fill slopes higher than three feet must be permanently protected against damage by erosion by the planting and establishment of protective vegetation.
E. Slopes higher than fifteen feet shall be planted with shrubs spaced ten feet maximum on centers or trees spaced twenty feet maximum on centers or a combination of shrubs and trees at equivalent spacings in addition to other vegetative cover.
F. The planting or seeding of vegetative protection must be effective. If the vegetation does not grow and offer proper protection, it must be replanted or reseeded.
G. The maintenance of vegetative protection on graded slopes shall be the responsibility of the permittee and shall be guaranteed until the vegetation is well established as determined by the director of public services or until the maintenance is officially assumed by another party approved by the director of public services.
H. Sediment control facilities must be constructed and in working order prior to the beginning of the rainy season and must prevent sediment from being transported from the site.
I. The outlet from any sedimentation basin must be designed to handle 1.5 times the maximum design inflow.
J. A standby emergency crew must be provided by the permittee and must be available at all times during the rainy season to repair and maintain the erosion and sediment control devices.
K. Erosion control materials must be stockpiled on the site for emergency repairs during the rainy reason.
L. Minor protective devices that have been removed during the working day shall be replaced at the end of the working day if the chance of rain is greater than forty percent.
M. After each rainfall the permittee shall inspect all erosion and sediment control devices and shall clean them and repair any damage.
N. Erosion control devices must be installed where drainage facilities discharge into natural channels. The devices may be rip-rap or concrete channel protection, stilling basins, check dams, drop structures or other devices which will effectively minimize erosion in the opinion of the director of public services. (Ord. 486 (part), 1986).