9731 18TH AVE W 2018-01-02 MF Import

Washington HYDRAULIC PROJECTAPPROVAL ��orthPugetSound Department ol 16078 Mdi Creek Boulevard FISH and RCW i7.55.100 � Appeal pursuant lo Chapmr 34.05 RCW Mili �reek, lNA 96012�12°6 ` WILDLIFE (425)775-1711 Issue Date: August 23, 2005 Control Number: Project Expiralion Date: December 31, 2006 FPAIPublic Nolice #: 102079-1 N/A 18. Disturbance of the streambed and banks shall be limited to that necessary tc place the culvert and any required channel modification associated �Nith it. Affected streambed and bank areas outside the culvert end associated fill shall be restored to preproject configuration following installation of the culvert. Within one year of project completion, the banks shall be revegetated with native or other approved woody species. 19. Approach material shall be structuraliy stable and be composed of material lhat, if eroded into the stream, shall not be detrimental to fish life. 20. Weli washed, rounded gravel "fish mix" shall be placed in the new culvert and associated streambed. Gravel shall be sized, per the addendum, to prevent scour within the culvert. 21. Prior to releasing the water flow to the project area, all bank protection or armoring shall be completed. 22. Upon completion of the project, all material used in the temporary bypass shali be removed from the site and the site returned to preproject or improved conditions. 23. !f at any time, as s result of project activities, 5sh are observed in distress, a fish kill occurs, or ��ater quality problems develop (including equipment leaks or spills), immediate notifcation shall be made to the Washington Department of Ecology at 1-800-258-5990, and to the Area Habitat Biologist lisled below. 24. Every effort shall be taken during all phases of this project to ensure that sediment-laden water is not allowed to enter the stream. 25. Wastewater from project activities and water removed from within the work area shall be routed to an area landward of the ordinary high water line to allow removal of fine sediment and other contarninants prior to being discharged to the stream. 25. All waste material such as construction debris, silt, excess dirt or overburden resulting from this project shall be deposited above the limits of Flood water in an approved upland disposal site. 27. If high flow conditions that may cause siltation are encountered during this project, work shall stop until the flow subsides. 28. Extreme care shall be taken to ensure that no petroleum Froducts, hydraulic fluid, fresh cement, sediments, sediment-iaden water, chemicals, or any other toxic or deleterious materials are allowed to enter or leach into the stream. 29. Equipment used (or this project shall not enter or operate below the ordinary high water liiie. Page 3 af 6