Ordinance 3676-19 - Laserfiche WebLink

4. Watershed Management Plans.The city shall not allow relocation or alteration of any Type F stream located within an area where an adopted watershed management plan does not allow for stream alteration or relocation,except when allowed by Section 19.37.050 of this chapter, or to allow access to a lot or substantial portion of a lot when no other feasible means of access exists. CB. Compensating for Stream Impacts.Stream system and buffer alteration,when allowed by this chapter, shall be subject to the following requirements: 1. Each activity/use shall be designed so as to minimize overall stream system or buffer alteration to the greatest extent possible. 2. Construction techniques and field marking of areas to be disturbed shall be approved by the city prior to site disturbance to ensure minimal encroachment. 3. A mitigation plan shall be prepared in accordance with subsection D of this section. 4. The city may require the applicant to rehabilitate a stream system and its buffer area by removing harmful debris,sediment, nonnative vegetation, or other material detrimental to the area, by replanting disturbed vegetation, by removing tightlined or culverted portions of a stream from pipes/culverts,or by other means deemed appropriate by the city. Rehabilitation or restoration may be required at any time that a condition detrimental to stream functions exists. 5. In approving alteration or relocation of a stream system or its buffer,the city may require that an area larger than the altered portion of the stream and its buffer be provided as compensation for destruction of the functions of the altered stream system and to ensure that such functions are replaced. 6. When stream system relocation or compensation is allowed, the city shall require that the stream relocation be completed prior to allowing the existing stream to be filled or altered. 7. The city may limit certain development activities near a stream to specific months in order to minimize impacts on water quality and wildlife habitat. 8. The city may apply additional conditions or restrictions, or require specific construction techniques in order to minimize impacts to stream systems and their buffers. 9. Stream compensation shall not occur in areas having high-quality terrestrial habitat. I C . Voluntary daylighting of streams in pipes and culverts. 1. To encourage daylighting of streams in pipes and culverts, the planning director may modify development standards as set out in subsection D.2 of this section when the applicant submits a plan for daylighting that meets the following criteria: a. The plan is prepared by a qualified professional; b. The ecological functions of the daylighted waters and adjacent area are improved so the new riparian corridor is compatible with and protects the ecological functions of the existing riparian corridor upstream and downstream and does not contribute to flooding; ecological functions include preventing erosion, protecting water quality, and providing diverse habitat; and c. If the plan proposes daylighting the pipe or culvert in a different location on the parcel from its current location or off the parcel,the ecological functions required in subsection D.1.b of this section are provided as effectively as they would be without the relocation. 2. If the director finds the conditions in subsection D.1 of this section are met,the director may modify the following development standards.The modification shall be the minimum to provide sufficient area to meet the standards in subsection D.1 of this section and shall be in the following order of priority: a. Yard and/or setback requirements on the property may be reduced, unless reducing them is injurious to safety. b. The stream and adjacent buffer area may count toward required landscaping. Planning Commission Resolution 19-04 Page 54 Critical Areas March 19, 2019