Ord-2021-016 - Laserfiche WebLink

Home Browse Search

hundred-vear channel mioration hazard area shall be of a scale and format specified by the department.d. Seismic Hazard Areas. Seismic hazard areas shall include areas subject to severe risk of damage as a result of earthquake induced qround shakinq. slope failure. settlement. soil liquefaction. lateral spreadinq. or surface faultino. e. Volcanic Hazard Areas. Volcanic hazard areas shall include areas subiect to pvroclastic flows. lava flows. debris avalanche. inundation bv debris flows. mudflows. or related floodinq resultinq from volcanic activitv. There are no active or dormant volcanoes located within Kittitas however. Mount Rainer and Mount St. Helens are relativelv near. Hazards to Kittitas Countv residents from these volcanoes are likelv limited to ash deposition.f. Mine Hazard Areas. Mine hazard areas shall include areas underlain bv abandoned mine shafts. secondary passaqes between shaft tunnels. or air vents. Mine hazards include subsidence. which is the uneven downward movement of the qround surface caused by underqround workinqs cavino in: contamination to oround and surface water from tailinqs and underqround workinos: concentrations of lethal or noxious qases: and underqround fires.3. Mappinq. The approximate location and extent of oeoloqicallv hazardous areas are shown on maps maintained bv the Countv. These maps are useful as a guide for proiect applicants and/or propertv owners but do not provide a conclusive or definitive indication of qeoloqicallv hazardous area presence or extent. Other geoloqicallv hazardous areas mav exist that do not appear on the maps. and some oeolooically hazardous areas that appear on the maps may not meet the qeoloqicallv hazardous areas desiqnation criteria. The Countv shall update the maps periodicallv as new information becomes available and mav require additional studies durinq the development review process to supplement and/or confirm the mappino. Historic maps showinq the locations of known coal mines within the Countv are available from the Washinqton Department of Natural Resources. 17A.06.030 GeneralProtectionStandards 1. Generallv. New developments shall be located and/or enqineered and constructed to minimize risk to health and safety. protect the buildino and occupants from the hazard. and not increase the risk of landslides or erosion that could imoact either other properties. public resources. or other critical areas such as wetlands and fish and wildlife habitat conservation areas. lf impacts to other properties. public resources or other critical areas cannot be avoided these impacts should be mitiqated for. The Director may impose conditions on alterations and development in a geologically hazardous area as needed to:a. Protect slope stabilitv and minimize erosion, seismic, and/or landslide hazard risks:b. Maintain naturalsediment and erosion processes that are inteqralto the health and sustainabiliV of freshwater ecosystems as well as minimizinq impacts to stream and river processes such as channel infill. channel miqration or floodinq:c. Minimize the potentialfor propertv damaoe related to seismic events. erosion and/or landslides;d. Minimize the need for stream or river bank stabilization in the future:e. Protect human health and safetv: andf. Reduce public liabilities for damaqes associated with seismic events. erosion and/or landslides2. lmpact Avoidance. lmpact avoidance measures shall include, but not be limited to, locatinq the use/development outside of the hazard area. reducinq the number. size or scale of buildinos. drivewavs and other features: altering the confiquration or lavout of the proposed development: using environmentally favorable construction materials: implementinq special enoineering methods for construction. drainaqe. runoff manaoement etc.: foreqoinq construction of accessory structures: preserving native veqetation: and other reasonable measures. 51