17.05.210 Erosion control.
(a) Slopes. The faces of cut and fill slopes shall be prepared and maintained to control against erosion. The protection for the slopes shall be installed as soon as practicable. Where necessary, check dams, cribbing, riprap or other devices or methods shall be employed to control erosion and provide safety. Where cut slopes are not subject to erosion due to the erosion-resistant character of the materials, such protection may be omitted.
(b) Plant Material Protection Methods.
(1) Restriction of Vehicles to Graded Areas. Construction equipment shall be limited to the actual area to be graded according to the approved grading and erosion control plans. Every effort shall be made to restrict the passage of vehicles over areas intended to be left in their natural state according to approved plans.
(2) Tree Buffer Zone. No grading or operation of heavy equipment shall take place within the areas bounded by the dripline of any tree that is intended to be retained on the site unless an alternate method of preservation of the tree is approved by the Department of Public Works.
(3) Protective Barriers. During grading operations the permittee shall provide appropriate barriers around all native vegetation proposed for retention.
(c) Responsibility of Contractor. The permittee shall be fully responsible for any damage caused to existing trees or other vegetation not within the construction area, and shall carry the responsibility both for his own employees and for all subcontractors until grading operations have ceased. (Ord. 16432 § 6(8), 3-10-92. Code 1995 § 66-128.)