Ord-2021-016 - Laserfiche WebLink

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b. The alteration or development is desioned so that it will not deorade the functions or values of the fish habitat or other critical areas:c. Stream bank erosion control measures shall be desioned to use bioengineering methods or soft armorinq techniques. accordinq to the WDFW lnteorated Stream Bank Protection Guidelines (WDFW. 2003) (an approved habitat management plan. and d. Anv impacts to the functions or values of the aquatic fish and wildlife habitat conservation area are mitigated in accordance with a habitat manaoement plan. 4. Timinq restrictions. a. Fish. ln-water work alteration or development shall be timed to occur onlv durinq the allowable work window as desiqnated bv the Washinqton State Department Fish and Wildlife (WDFW) for the applicable species and aquatic fish and wildlife habitat conservation area tvpe. b. Wildlife. The County shall impose limitations on construction activities durinq breedinq and/or nestino periods for priority species when necessary to protect the species and avoid adverse impacts. Appropriate timino restrictions for wildlife species shall be based upon best available science and WDFW recommendations. 17A.04.050 PermittedAlterationsandDevelopment. The followinq alterations and development mav be permitted in fish and wildlife habitat conservation areas and/or their riparian manaqement zones or buffers when all feasible measures have been taken to avoid and mitigate adverse effects on species and habitats and a net loss of habitat functions will not occur. 1. Clearins and qradins. When clearinq and qradinq is permitted in a fish and wildlife habitat conservation area or its associated RMZ or buffer as part of an authorized alteration or development or as other allowed in these standards. the followino shall apply:a. Gradinq is allowed only durino the drv season, as determined bv the Director:b. Clearinq and oradino shall be limited to the minimum necessarv to accomplish the alteration or development: andc. Erosion and sediment control will meet or exceed the standards set forth in the current version of the Stormwater Manual for Eastern Washinqton.2. Stream bank stabilization. Stream bank stabilization and protection shall be permitted subiect to all the followinq standards. and those standards described in WDFW's lnteqrated Streambank Protection Guidelines (WDFW, 2003). WDFW's 2012 Stream Habitat Restoration Guidelines (SHRG). and KCC 17A.01.120.4:a. Natural riverine processes. includinq channel miqration. will be maintained to the maximum extent practicable; b. The alteration or development will not result in increased erosion and will not alter the size or distribution of stream substrate:c. Nonstructural measures. such as placino or relocatinq the develooment further from the aquatic habitat area. plantino veqetation. or installinq on-site drainaoe improvements. are not feasible or not sufficient to orotect the stream bank:d. Stabilization is achieved throuqh bioenqineerinq or soft armorinq techniques: ande. Hard bank armorinq mav occur only when the propertv contains a primarv. alreadv existino. Ieqally-established. permanent structure. which is unable to be relocated. that is in danqer from erosion caused bv riverine processes. as documented in a qeotechnical analysis prepared bv a qualified professional. The armorinq shall not expand bevond the oriqinal structural footprint. unless necessarv to protect existinq permanent buildings. roads or utility infrastructure adjacent to the bank. and shall not increase erosion or floodinq on adjacent properties. 3. Docks and launchinq ramps. Construction. reconstruction. repair. and maintenance of docks and public or private launchino ramps are subject to all the followino. and those standards described in KCC 17A.01.120.4: 41