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<br /> <br />56 <br /> <br />3. Geotechnical Report Contents. When required by this Title, the Geotechnical Report shall <br />include the general critical areas report requirements of KCC 17A.01.080 in addition to the <br />following: <br />a. A detailed description of the geology and soil conditions of the site; <br />b. Evaluation of the geologic conditions giving rise to the geologic hazard; <br />c. An evaluation of the safety of the proposed project; <br />d. Conclusion and recommendations regarding the effect of geologic conditions on the <br />proposed development; <br />e. Conclusions and recommendations on the suitability of the site to be developed; <br />f. A statement regarding the risk of damage from the project, both on- and off-site; and <br />whether or not the project will materially increase the risk of occurrence of the <br />hazard; <br />g. Recommendations concerning drainage practices, vegetation retention and other <br />mitigation and monitoring measures which may be needed to ensure slope stability; <br />h. Recommended erosion and sediment control measures; <br />i. A bibliography of scientific citations; <br />j. Any other specific measures which must be incorporated into the design and <br />operational plan of the project to eliminate or reduce the risk of damage due to the <br />hazard. This shall include a recommendation on the required buffer or setback <br />distance that must be maintained between the proposed development and the <br />hazard to ensure the safety of the development; and <br />The signature and stamp of the engineer or engineering geologist who prepared the <br />Geotechnical Report. <br />4. Channel Migration Zones Studies Contents <br />When required by this Chapter, Channel Migration Zone Studies shall include the general critical <br />areas report requirements of KCC 17A.01.080, and shall demonstrate the following: <br />a. The parcel on which the development is proposed is effectively protected <br />(disconnected) from channel movement due to the existence of permanent levees <br />that are actively maintained by public agencies or infrastructure such as roads and <br />bridges constructed and maintained by public agencies (not all roads and levees will <br />be considered disconnection points): or <br />b. The proposed development site has minimal risk of channel migration during the next <br />one hundred (100) years as indicated by the existing channel type, land cover (and <br />low likelihood of future alterations in land cover), presence of adjacent toe slope <br />landslide hazard areas, surficial geology, low soil erosion potential, lack of evidence <br />of likely avulsion pathways (including areas upstream of, but proximate to, the site), <br />and/or low inundation frequency(ies). The assessment shall include a review of <br />available data regarding historical channel locations at the site; identification of the <br />site within a broader geomorphic reach of the river system and the general <br />characteristics of that reach; description of existing channel type, existing channel <br />alteration and likelihood of future alterations with changes in land cover; surficial <br />geology, soils and erosion potential; and geotechnical setbacks relating to erosion at <br />the toe of adjacent slope(s). The approach to assessing location shall be generally <br />equivalent to the methods detailed in “A framework for Delineating Channel Migration <br />Zones” (Ecology Publication # 03-06-027), or similar method approved or sanctioned <br />by Ecology. <br /> <br /> <br />