Reclamation District 817 Gibbs Pond and 40 Mile Road Pipe Repair Project

Approval of Permit No. 19669, under California Code of Regulations, Title 23, Article 3, Section 6, for work within an adopted plan of flood control: To install a new approximately 94 linear feet, 18-inch-diameter, 0.5-inch-thick welded steel drainage pipe at an invert elevation of 54.65 feet (NAVD88) through Dry Creek levee. The pipe will be encased with 1 foot of controlled low strength material (CLSM) and installed via an open-cut trench. Approximately 5-foot-deep by 2- to 4-foot-wide storm drainage ditches will be constructed at the landside inlet and waterside outlet. At the landside pipe inlet, a precast concrete headwall and a 48-inch-wide trash rack with 4-inch maximum bar spacing will be installed. At the waterside pipe outlet, a precast concrete headwall, a 18-inch flap gate, and 18-inch-minus rock slope protection will be installed. At the levee embankment waterside hinge, a 4-foot by 6-foot by 19-foot-deep precast concrete gate well will be installed. The gate well will house an access ladder, an 18-inch diameter automatic sluice gate as a positive closure device, and an automatic gate lift.