San Francisco Bay Joint Venture Project 105 San Francisco Bay Joint Venture Projects 2003-01-01 2004-01-01 Joyce Blueford Joyce Blueford blueford@msnucleus.org Math/Science Nucleus

US Mission Peak Company

US Sandy Scoggin sscoggin@sfbayjv.org East Bay Conservation Corps Cooperator Math/Science Nucleus Lead agency Math/Science Nucleus Cooperator Mission Peak Company Lead agency Unknown Unknown 0 The restoration of Mission Creek attempts to create a stable channel bed and bank system while creating a meandering pattern that prevents erosion. In order to accomplish restoration there are many different ways to engineer improvements. Erosion on Mission Creek had been so intense that the Union Sanitary Sewage District's pipeline was dangerously close to the stream. In order to prevent breakage the sewage line was moved and enlarged. The channel was terraced to allow water to meander more effectively and not to scour certain areas. This involved major earth movements and the use of bioengineering to reduce the velocity of the water in this area. Coir logs or cylindrical structures of coconut husk fibers were used as a protection of creek bends and slopes. Live red willow stakes, which are native to this area, were inserted in the coir logs. They grow by rooting directly from the stake and the roots will bind the banks to decrease erosion. Straw wattles or tubes of rice straw are used along steeper bank slopes for erosion and stormwater runoff control. The placement of rootwads (root structures of previous trees that were cut) helps stabilize stream banks from erosion. Rip-rap or large boulders are also placed in key areas to help direct water flow. In areas were eucalyptus trees were removed; a flood plain terrace was created. Revegetation of the area will create bank stabilization as well as allowing habitat enhancement to increase wildlife in the area. Unknown 90 -90 180 -180 Wetlands Habitat Enhancement Environmental Education and Outreach Creek and Lake - Creek and riparian zone 0 Alameda County CalEDLN project standard 1.0RC1 2009-11-20 Sandra Scoggin