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

Wasnington HYDRAULIC PROJECT APPROVAL NorthPugetSouM Department ot 16018 Mill Creek Boulevard FISH and RCW 77.55.100 • Appeal pursuant to Chapter 34.05 RCW Mill Creek, WA 9d012-1296 'NILDLIFE (425)775-1711 Issue Dale: August 23, 2005 Project Expiration Date: December 31, 2006 Control Number. FPA/Public Nolice #: 102079-1 NIA 8. The bypass shall be of sufficient size to pass all expected flows and debris for the duration of the project. 9. 7he permittee shail have a qualified biologist capture and safely move food fish, game fish, and other fish life from the job site. The permittee shaii have fish capture and transportation equipment ready and on the job site. Captured fish shall be immediately and safely transferred to free-flowing water downstream of the project site. The permittee may request the Washington Department of Fish and Wildlife assist in capturing and safely moving fish life from the job site to free-flowing water, and assistance may be granted if personnel are available. 10. Any device used for diverting water from a fish-bearing stream shall be equipped with a fish guard to prevent passage of fish into the diversion device pursuant to RCW 77.55.040 and 77.16.220. The pump intake shall be screened with 1/8-inch mesh to prevent fish irom entering the system. The screened intake shall consist of a facility with enough surface area to ensure that the velocity through the screen is less than 0.4 feet per second. Screen maintenance shall be adequate to prevent injury or entrapment to juvenile fish and lhe screen shall remain in place whenever water is withdrawn from the stream through the pump intake. 11. The culvert shall be installed and maintained to ensure unimpeded fish passage. 12. The culvert shall be placed on a flat gradient with the bottom of the culvert placed below the level of the streambed a minimum of 20 percent of the culverPs rise for an elliptical culvert. The 20 percent piacement below the streambed shali be measured at the culvert outlet. 13. T' e culvert shall be installed to maintain structural integrity to the 100-year peak Flow with consideration of the debris likely to be encountered. 14. Fill associated with the culvert installation shall be protected from erosion to the 100-year peak flow. 15. The culvert shall be installed and maintained to avoid inlet scouring and to prevent erosion of stream banks downstream of the project. 16. The culvert facility shall be maintained by the owner(s) per RCW 77.55.060 to ensure continued, unimpeded fish passage. If the structure becomes a hindrance to fish passage, the owner(s) shall be responsible for obtaining an Hydraulic Project Approval and providing prompt repair. Financial responsibility for maintenance and repairs shall be that of the owner(s). 17. The culvert shall not exceed 30 feet in total length. Page 2 of 6