SCH Number 2008052091

Project Info

Title

Public Law 84-99 Levee Rehabilitation Project - RD 2098

Description

The Applicant proposes to repair approximately 22 erosion sites, for a total of 6,384 linear feet, along Cache Slough and Shag Slough/Yolo Bypass. Erosion repair sites will be excavated at least 6 inches beyond the damaged area on the levee slope. The slope will then be backfilled with select fill to a 3:1 (H:V) slope, or to a safe slope that matches adjacent slopes, to a distance of 2.5 feet below the projected levee surface. 24-inch riprap will be placed at the levee toe to a height of 1-foot above the design water elevation and will extend into the water to meet the projected levee slope. Surface voids in the riprap shall be filled by casting 4-inch minus-clean infill rock onto the newly repaired sites. The newly finished levee slopes will be covered in topsoil and hydroseeded per project specifications. A mix of tule and bulrush will be planted to replace the moved in water vegetation. All trees that provide Shaded Riverine Aquatic (SRA) habitat will be protected in place. Trees greater than 4 inches diameter at breast height (DBH) will be protected in place. Willow pole cuttings and button brush will be planted along the toe of the levee slopes. The California Department of Fish and Game is executing a Lake and Streambed Alteration Agreement Number 1600-2008-0260-3 pursuant to Section 1602 of the Fish and Game Code to the project Applicant, Tirath Pal Sandhu, California Department of Water Resources.

4 documents in project