BOCC Exhibits A-E ECY Approved SMP-Code Amendments

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Kittitas County Board of County Commissioners Shoreline Master Program Adopting Ordinance Kittitas County Shoreline Master Program Exhibit D | March 2016 | Page 278 of 339 e. Relationship of the proposed use to the comprehensive plan and floodplain management program for that area; f. Safety of access to the property in times of flood for ordinary and emergency vehicles; g. Expected heights, velocity, duration, rate of rise, and sediment transport of the flood waters and the effects of wave action at the site; h. Costs of providing governmental services during and after flood conditions, including maintenance and repair of public utilities and facilities; i. Location and extent of storage area for floodwater which will be displaced by the proposed development; and j. The risk to public and private property and public health, safety and welfare due to rising of water levels, shifting of stream channels (including related erosion) as well as costs to individuals and the general public for items which are not insured such as loss of productivity due to closed roads, risk to emergency response workers, loss of uninsured property (cars, landscaping, etc.) and habitat damage as a result of loss of riparian zones and floodplain function. 17B.05.020U Critical aquifer recharge areas – designation, mapping, and classification. 1. Designation: Critical aquifer recharge areas are areas where an aquifer that is a source of drinking water is vulnerable to contamination that would affect the potability of the water. These recharge areas have geologic conditions that allow high infiltration rates, which contribute significantly to the replenishment of ground water. These conditions also create a high potential for ground water contamination. All lands and shorelands classified as having high aquifer recharge potential and aquifer susceptibility are hereby designated as critical aquifer recharge areas. Critical aquifer recharge areas also include known wellhead protection areas for Class A water systems. A wellhead protection area is the surface and subsurface area surrounding a well or wellfield that supplies a public water system through which contaminants are likely to pass and eventually reach the water well(s) as designated under the Federal Safe Drinking Water Act. 2. Mapping: The general location and extent of critical aquifer recharge are shown on maps maintained by the County. These maps are useful as a guide for Kittitas County, project applicants, and/or property owners, and may be updated as more information on aquifer recharge and susceptibility becomes available. These maps are a reference and do not provide a conclusive or final critical area designation. 3. Classification: All Kittitas County shorelands shall be classified as having either a high, medium, or low aquifer recharge potential. At a minimum, classification shall be based on soil permeability and recharge potential as described within the Soil Survey of Kittitas County. Where adequate information is available, aquifer recharge potential shall be further classified based on the recharge potential of surficial geologic materials, presence or absence of restrictive layers, surface and groundwater monitoring data, wellhead protection areas, depth to groundwater, topography (i.e., slopes), and locally adopted groundwater protection plans and studies. Land classified as having a high, medium, or low aquifer recharge potential shall also be classified as having a high, medium, or low susceptibility to contamination of an underlying aquifer, respectively. Based on these criteria, the potential for recharging aquifers or transmitting contaminants to the underlying aquifer is greatest where the aquifer is close to the ground surface, where ground surface slopes are minimal, and where the recharge potential of the soils and/or surficial geologic material is greatest. All wellhead protection areas shall be designated as highly susceptible critical aquifer recharge areas. Wellhead Protection Areas are the areas defined by the boundaries of the 10-year time of ground water travel, in accordance with WAC 246-290-135.