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(1) All proposed improvements within an erosion hazard area or seismic hazard area shall follow the recommendations within the critical area report, and supplemental geotechnical evaluation required in CMC 18.65.250(4), to ensure the improvements will not adversely affect geologic hazards and the improvements are at minimal risk by the geologic hazard as designed under anticipated conditions.

(2) For any development proposal on a site containing an erosion hazard or seismic hazard area, an erosion and sediment control plan shall be required and included as part of the mitigation plan. The erosion and sediment control plan shall be prepared in compliance with the adopted City standards and stormwater manual.

(3) Proposed improvements within an erosion hazard area shall also demonstrate all the following via the critical area report:

(a) The improvement will not increase surface water discharge or sedimentation to adjacent properties and/or stormwater systems beyond predevelopment conditions;

(b) The improvement will not decrease slope stability on adjacent properties; and

(c) The improvement will not adversely impact other critical areas.

(4) If vegetation is removed beyond the scope of the approved clearing and grading permit and erosion and sediment control plan associated with the construction of development infrastructure, the City may stop work and the applicant shall be required to submit a restoration plan to the City for review and approval prior to further construction activity allowed on site. Following approval, the applicant shall be required to implement the plan. The City may require a financial guarantee to ensure implementation of the restoration plan.

(5) Where the City determines that erosion from a development site poses a significant risk of damage to downstream receiving waters, based either on the size of the project, the proximity to the receiving water or the sensitivity of the receiving water, the applicant shall be required to provide continuous monitoring of surface water discharge, turbidity, and suspended sediment concentrations from the site. If the project does not meet water quality standards established by law or administrative rules, the City may suspend further development work on the site until such standards can be met.

(6) Unless otherwise provided in CMC 18.65.050 or part of an allowed exemption, the use of hazardous substances, pesticides and fertilizers in erosion hazard areas may be prohibited by the City. (Ord. 09-19 § 9 (Exh. D); Ord. 06-17 § 4 (Exh. B))