The project is limited to the removal and replacement of three piers on Donner Lake. The piers are identified as pier 15, pier 21, and pier 29. The dilapidated piers will be replaced in approximately the same footprints. The work will be conducted during low water conditions and Best Management Practices (BMP) will be implemented to prevent water quality impacts. The project sites will be accessed using an amphibious vehicle. The amphibious vehicle will also be used to transport materials and drive the piles. A 6-foot, by 6-foot steel landing mat will be used for any soil deformation greater than 3-inches deep, to protect water quality and prevent pumping of excess soil
moisture. Piers 21 and 29 will have a 3-foot, by 6-foot, by 3-foot concrete foundation to anchor the new piers to the upland shoreline. Pier 15 will have 3-foot, by 4.5-foot, by 3-foot foundation. The piers consist of a 6-foot width design, steel joists and girders, Trex decking and fascia, 10 ¾-inch diameter steel piles, concrete landings not to exceed 90-cubic-feet, and side-mounted access ladders. Pier 15 will be 36-feet long, 6-feet wide and will had a 10-foot ramp. Pier 21 will be 38-feet long and 6-feet wide. Pier 29 will be 50-feet long and 6-feet wide.