Exhibit A KCC 17A Revisions - Laserfiche WebLink

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Kittitas County, WA § 17A.06.020 KITTITAS COUNTY CODE § 17A.06.030 Downloaded from https://ecode360.com/KI6857 on 2025-05-15 "A Framework for Delineating Channel Migration Zones," Washington Department of Ecology, 2003, as amended). Maps delineating the one-hundred-year channel migration 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 ground shaking, slope failure, settlement, soil liquefaction, lateral spreading, or surface faulting. e. Volcanic hazard areas. Volcanic hazard areas shall include areas subject to pyroclastic flows, lava flows, debris avalanche, inundation by debris flows, mudflows, or related flooding resulting from volcanic activity. There are no active or dormant volcanoes located within Kittitas County; however, Mount Rainer and Mount St. Helens are relatively near. Hazards to Kittitas County residents from these volcanoes are likely limited to ash deposition. f. Mine hazard areas. Mine hazard areas shall include areas underlain by abandoned mine shafts, secondary passages between shaft tunnels, or air vents. Mine hazards include subsidence, which is the uneven downward movement of the ground surface caused by underground workings caving in; contamination to ground and surface water from tailings and underground workings; concentrations of lethal or noxious gases; and underground fires. 3. Mapping. The approximate location and extent of geologically hazardous areas are shown on maps maintained by the County. These maps are useful as a guide for project applicants and/or property owners but do not provide a conclusive or definitive indication of geologically hazardous area presence or extent. Other geologically hazardous areas may exist that do not appear on the maps, and some geologically hazardous areas that appear on the maps may not meet the geologically hazardous areas designation criteria. The County shall update the maps periodically as new information becomes available and may require additional studies during the development review process to supplement and/or confirm the mapping. Historic maps showing the locations of known coal mines within the County are available from the Washington Department of Natural Resources. (Ord. 2021-016, 2021) § 17A.06.030. General protection standards. 1. Generally. New developments shall be located and/or engineered and constructed to minimize risk to health and safety, protect the building and occupants from the hazard, and not increase the risk of landslides or erosion that could impact either other properties, public resources, or other critical areas such as wetlands and fish and wildlife habitat conservation areas. If impacts to other properties, public resources or other critical areas cannot be avoided these impacts should be mitigated for. The Director may impose conditions on alterations and development in a geologically hazardous area as needed to: a. Protect slope stability and minimize erosion, seismic, and/or landslide hazard risks; b. Maintain natural sediment and erosion processes that are integral to the health and sustainability of freshwater ecosystems as well as minimizing impacts to stream and river processes such as channel infill, channel migration or flooding; c. Minimize the potential for property damage 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 safety; and f. Reduce public liabilities for damages associated with seismic events, erosion and/or landslides