Ord-2021-016 - Laserfiche WebLink

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a. Above-Ground Utilitv Lines and Pipes. Utilitv lines and pioes that are above- ground, properlv anchored and/or designed so that they will not increase the risk or consequences of static or seismic slope instabilitv or result in an increased risk of mass wastino. Such utilitv lines mav be permitted only when the applicant demonstrates that no other feasible alternative is available to serve the affected population. For pipelines. automatic shut off valves should be located as close as practical to the landslide area so that the release from the pipe upon breakaoe is minimized. b. Access Roads and Trails. Access roads and trails that are enqineered and built to standards that avoid the need for maior repair or reconstruction bevond that which would be required in non-hazard areas. Access roads and trails mav be permitted only if the applicant demonstrates that no other feasible alternative route exists. Standards to minimize impacts mav be specified bv the Director.c. Stormwater Convevance. Stormwater convevance throuqh a properlv desiqned stormwater pipe when no other stormwater convevance alternative is available. The pipe shall be located above-oround and be properly anchored and/or desiqned so that it will continue to function in the event of a slooe failure or movement of the underlyino materials and will not increase the risk or consequences of static or seismic slope instabilitv or result in increased risk of mass wastinq activitv.3. Setbacks. The Director shall require setbacks from the edqes of anv landslide hazard area u.n accordance with the followinq: a. The size of the setbacks shall be based on the findinqs of a qualified enqineerinq geoloqist or qeoloqist, licensed in the state of Washinqton. and shall protect critical areas and minimize the risk of propertv damaqe. death. or iniurv resulting from landslides caused in whole or part bv the alteration or development and shall be sized to provide orotection for a period of at least 100 vears based on the assessment of the qeoloqic processes within the landslide hazard area: b. The setback above the landslide hazard area shall include consideration of hydrolooic contribution to the landslide area and/or the area subject to the potential for mass movement. and the setback down slope from the landslide hazard area shall include consideration of landslide run out: andc. The Director shall have the authority to require appropriate manaqement of veqetation or land use within the setback area to minimize the risk of increasinq the risk of landslides. 17A.06.050 Erosion Hazard Area Standards 1. Generally. Alterations or development may be allowed within erosion hazard areas. provided that all responsible measures have been taken to minimize risks and other adverse effects with erosion hazards. and the amount and deoree of the alteration are limited to minimum needed to accomplish the project purpose. Prior to approvinq a development or alteration in or adjacent to an erosion hazard area, a report will be prepared as defined in KCC 174.06.100. Based on this information. the Director shall determine whether all the followinq standards are met. a. The alteration or development includes all appropriate measures to eliminate or otherwise mitiqate risks to health and safetv: b. The alteration or development includes best manaoement practices to prevent, control and minimize erosion:c. The alteration or development will not increase erosion potential: d. The removal and disturbance of vegetation. clearino. or qradino shall be limited to the area of the approved alteration or development: e. The alteration or development will not increase surface water discharge or sedimentation to adiacent prooerties beyond predevelopment conditions. as 53