The California Department of Fish and Wildlife has executed Lake and Streambed Alteration Agreement EPIMS Notification No. EPIMS- NAP-27797-R3, pursuant to Section 1602 of the Fish and Game Code to BioEngineering Associates, Inc.
The Project is limited to stabilizing and revegetating the bank at three sites along a 1,200 foot reach of Napa River and removing debris from the channel. At Site 1, debris (i.e., a concrete pipe) in the channel will be removed, and three 12-15 feet long live willow (Salix sp.) siltation baffles will be installed. The baffles will be held in place in baffle trenches using native streambed material. At Site 2, a fallen willow will be removed at the base and an approximately 3-feet tall and 65-feet wide live woven willow wall will be installed at the toe of the riverbank and backfilled with two layers of coir fabric and filled with soil and gravel. At Site 3, a series of four coir wrapped soil
lifts, live willow brush layer lifts, and a redwood log with rootwad facing outward will be installed. The coir and live willow brush layer lifts will be constructed on a 252 square foot rock platform consisting of quarried boulders that will run 42 feet along the stream bank.