USACE SPK American River Common Features (ARCF) Lower American River (LAR) Project 2 - Erosion Control, Bank Protection, and Stabilization

The anticipated project includes roughly 7,800 feet of stream bank protection and stabilization of the existing riverbank and levee to protect critical infrastructure against the effects of erosion during large flood events. Most vegetation will be cleared from the project footprint prior to construction. At Site 2-2, the Contractor will be required to clear remaining vegetation and stumps, grub, and strip the project footprint, place soil and rock revetment on the riverbank and levee face beneath Howe Avenue bridge, place soil fill and erosion control netting to construct planting benches, place instream wood structures, and plant and seed placed material. At Site 2-3, the Contractor will be required to clear remaining vegetation and stumps, grub and place soil and rock revetement on the levee face near H-Street, and seed placed material. Along the riverbank through Site 2-3, the Contractor will be required to excavate the bank to a specified flatter slope, excavate ten (10) feet deep into the finished grade to place approximately 79 rock tiebacks by placing rock revetment in 12-foot-wide trenches extending 60 feet to 90 feet in length, backfill with soil fill to finished grade, and place sections of continuous soil-filled rock protection. After excavation and placement, the Contractor will be required to place erosion control netting over planting benches, place instream wood structures on the planting benches, and plant and seed the finished grade. Most of Site 2-2 will require working in the active channel of the American River to place material, while the majority of Site 2-3 will be working in the floodplain above the active channel, with limited areas of the site requiring work in the active channel. The project will require import and placement of approximately 52,500 tons of rock riprap meeting the FHWA Type III gradation, approximately 49,000 tons of rock riprap meeting the FHWA Type IV gradation, approximately 4,500 tons of rock riprap meeting the FHWA Type V gradation, approximately 12,000 tons of bedding material to be imported and placed, approximately 365,000 cubic yards of soil excavation to be off hauled from the site over public roads and stockpiled at a specified stockpile location within 10 miles of the project, approximately 295 trees to be imported and placed as instream woody material, and approximately 4,700 live cuttings to be imported and planted on-site.

Division 31 -	Earthwork, Erosion and Sedimentation Controls.
Division 33 -	Utilities, Storm Drainage Utilities, Ponds and Reservoirs.
Division 35 -	Waterway and Marine Construction, Shoreline Protection, Waterway Construction and Equipment.