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Kittitas County Shoreline Master Program <br />2. Mitigation plans for development within frequently flooded areas that will reduce the <br />effective base flood storage volume of the floodplain shall be prepared by an <br />engineer licensed in the state of Washington and familiar with hydrology, hydraulics, <br />and fluvial geomorphology. Plans shall include the following information: <br />a. Potential that materials may be swept during flooding onto other lands to the <br />detriment of others; <br />b. Actual danger to life and property if flooding or erosion occurs; <br />c. Susceptibility of the proposed development and its contents to flood damage; <br />d. Availability of alternative locations for the proposed use which are not subject to <br />flood or erosion damage; <br />e. Relationship of the proposed use to the comprehensive plan and floodplain <br />management program for that area;f. Safety of access to the property in times of flood for ordinary and emergency <br />vehicles; <br />g. Expected heights, velocity, duration, rate of rise, and sediment transport of the <br />flood waters and the effects of wave action at the site; <br />h. Costs of providing governmental services during and after flood conditions, <br />including maintenance and repair of public utilities and facilities;i. Location and extent of storage area for floodwater which will be displaced by the <br />proposed development; andj. The risk to public and private property and public health, safety and welfare due <br />to rising of water levels, shifting of stream channels (including related erosion) as <br />well as costs to individuals and the general public for items which are not insured <br />such as loss of productivity due to closed roads, risk to emergency response <br />workers, loss of uninsured property (cars, landscaping, etc.) and habitat damage <br />as a result of loss of riparian zones and floodplain function. <br />U. Requlations- critical aquifer recharqe areas designation. mappinq. and <br />classification <br />1. Designation: Critical aquifer recharge areas are areas where an aquifer that is a <br />source of drinking water is vulnerable to contamination that would affect the <br />potability of the water. These recharge areas have geologic conditions that allow <br />high infiltration rates, which contribute significantly to the replenishment of ground <br />water. These conditions also create a high potential for ground water contamination <br />All lands and shorelands classified as having high aquifer recharge potential and <br />aquifer susceptibility are hereby designated as critical aquifer recharge areas. <br />Critical aquifer recharge areas also include known wellhead protection areas for <br />Class A water systems. A wellhead protection area is the surface and subsurface <br />area surrounding a well or wellfield that supplies a public water system through <br />which contaminants are likely to pass and eventually reach the water well(s) as <br />designated under the Federal Safe Drinking Water Act. <br />2. Mapping: The general location and extent of critical aquifer recharge are shown on <br />maps maintained by the County. These maps are useful as a guide for Kittitas <br />County, project applicants, and/or property owners, and may be updated as more <br />Chapter 5 <br />March 7, 2016 <br />84