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Kittitas County Shoreline Master Program <br />4. Maintenance dredging of established navigation channels and basins shall be <br />restricted to maintaining previously dredged and/or existing authorized locations, <br />depths and widths. <br />5. All applications for substantial development permits that include dredging shall <br />supply a dredging plan that includes the following information: <br />a. The quantity of material to be removed; <br />b. The method of removal; <br />c. Location of spoil disposal sites and measures that will be taken to protect the <br />environment around them; and <br />d. Plans for the protection and restoration of the shoreline environment during and <br />after dredging operations. <br />6. A dredging operation judged by the Administrator to be insufficient for protection or <br />restoration of the shoreline environment shall cause denial of a substantial <br />development permit. <br />7. Dredging in surface waters shall be allowed only where necessary because of <br />existing navigation needs, habitat restoration or improvement, maintenance or <br />construction of water-dependent uses. <br />8. Minor trenching to allow the installation of necessary underground pipes or cables <br />may be allowed if no alternative, including boring, is feasible, and: <br />lmpacts to fish and wildlife habitat are avoided to the maximum extent possible; <br />The utility installation shall not increase or decrease the natural rate, extent, or <br />opportunity of channel migration; <br />Appropriate best management practices are employed to prevent water quality <br />impacts or other environmental degradation; and <br />Mitigation is implemented, as appropriate, pursuant to Section 5.2 Environmental <br />protections and critical areas. <br />a <br />b <br />c <br />d <br />L Dredging for the purpose of obtaining fill material is prohibited, except when <br />permitted under Section 6.12 Mining; or when needed for a project associated with <br />the Model Toxics Control Act (MTCA) or the Comprehensive Environmental <br />Response, Compensation and Liability Act (CERCLA) habitat restoration, or any <br />other significant restoration effort approved by a shoreline conditional use permit, <br />where placement of fill is watenrvard of the OHWM. <br />10. Dredging and excavation shall be confined to the minimum area necessary to <br />accomplish the intended purpose or use. <br />11. Hydraulic dredging or other techniques that minimize the dispersal and broadcast of <br />bottom materials shall be preferred over agitation forms of dredging. <br />12. Curtains and other appropriate mechanisms shall be used to minimize widespread <br />dispersal of sediments and other dredge materials. <br />Chapter 6 <br />March 7,2016 <br />109