Butte Creek Scour Repair Site Maintenance Project for 2006
NOD - Notice of Determination
The objective of this project is to restore a 1.5H to 1V slope along the left over bank of Butte Creek and prevent further erosion. The slope of the bank will be reconstructed with approximately 1,850 cubic yards of imported fill. The finished slope will be armored with a turf reinforcement mat that will help prevent future erosion and sloughing. This turf reinforcement mat is porous and when covered with 2 inches of soil will allow the slope to be re-vegetated with native grass and willow plantings. At the toe of the slope, rip rap (D50 of 20") will be placed in order to prevent erosion at the toe of the levee and to anchor the turf reinforcement mat. Rock will generally be placed above normal summer creek water levels. The exception is in slope restoration areas where the hardpan has already been lost due to erosion. Riprap will extend vertically 4 feet above the existing hard pan layer at the bottom of the slope. Rock fill will also be required in slope restoration areas with out hardpan.
(1) The project will have a significant impact on the environment
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
(3) Mitigated measures were made a condition of the approval of the project
(4) A mitigation reporting or monitoring plan was adopted for this project
(5) A Statement of Overriding Considerations was adopted for this project
(6) Findings were made pursuant to the provisions of CEQA
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