CX-016306: Repair Erosion Near BM 30-Inch Colorado Pipeline to Seaway Dock

The work consists of placing rip-rap along the north bank of the high flow channel, nearshore, and backfilling with structural fill. The top of the bank will be cut down to a uniform +16 feet with benches cut in a series of steps to improve stability. A separator fabric (geotextile) shall be placed and the rip-rap dike will be constructed along the water's edge such that the channel-facing toe should commence at 0 feet rising to a crest of +6 feet. A portion of the fabric will then be folded back over the landward facing side of the rip-rap to accommodate the completion of an engineered fill of 1:3 slope from an elevation of +4.5 feet on the riprap to +14.5 feet below the 16 feet graded elevation. The core of this engineered slope is compacted sand topped with 18 inches of clay and compacted. The final slope shall be fertilized and seeded.