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Mr. Michael Jewell The fixed wall structure for the Smith Canal gate will consist of two cellular web steel sheet pile walls varying in width from 29 to 34 feet apart. The space between the walls will be filled with granular fill. Installation of the gate structure and its foundation will be done in the dry by constructing a metal sheet cofferdam for a 70 x 70 ft area. Installation of the cellular sheet pile walls will not require dewatering. Dredging of up to - 8;650 -cubic -yards -of e-hannel-bottom-along -the-sheet pile wall -alignment will -be -done -to -- provide a level surface. Steel pipe piles (36 inch) will be driven inside the cofferdam, then concrete walls and floor, and then the metal miter gate. The gate for each structure will be 50 ft long. Equipment will include barges, tugboat, vibratory hammer, impact hammer, crane, clamshell excavator or long-arm track hoe, front-end loader, and vehicles for transporting equipment, material, and personnel. Construction of the Smith Canal gate would take slightly more than 2 seasons, beginning in 2019. The sequence of activities for the Smith Canal gate will begin in 2019 with a test installation, and removal, of a single H -pile and sheetpile or pipe pile in three locations along the project alignment that will be completed in up to 3 days within an in -water work window of complete avoidance to smelt (August 1 - November 30), to better specify contracting needs. This initial phase of work in 2019 will be limited to 2,000 strikes per day with an impact hammer. Also in 2019, a cone penetration test (CPT) will be done in up to 7 locations, which only requires pressing a pole -mounted sensor into the channel bottom. The CPTs themselves do not require use of an impact or vibratory hammer. During the next year, beginning within the in -water work window of July 15 - October 15, the cofferdam would be installed for the gate construction (1 month). Work would continue on the gate and southern portion of the fixed wall until complete and proven operational (-11 months). The year after that, the northern portion of the fixed wall, and all other elements of the project (riprap, dolphins, fender piles, fishing platforms, etc.) would be installed. 3. CHANGE the following in the first two paragraphs of Description of the Action, Erosion Protection, on p. 7, as follows: From: This pleasure involves placement of rock slope protection; mostly to be installed on the land side of the Delta Front levees (Shima Tract, Tenmile Slough) to protect them from wave runup should the agricultural levees to the west fail during a flood event. Erosion protection for part of Duck Creek to protect the landside of the levee from floodwaters moving north which might wrap around the end of the levee is no longer proposed (see Consultation History). Conventional quarry stone riprap is proposed. A sand filter will be installed prior to riprap placement. Equipment used will be dump or belly dump truck, dozer, and hydraulic excavator. The riprap will be placed in a two -foot -thick layer along the full face of the levee from toe to crown