Lower American River (LAR) 3A   4

**Amendment 0004 is a PIEE administrative amendment ONLY to update the PIEE and SAM Response Date and Description for W9123823B0013 Amendment 0003. There is no Solicitation Amendment 0004 for W9123823B0013. **W9123823B0013 Amendment 0003 is issued to 1. Extend the date for submission of bids 2. Change the bid opening date. 3. Update Solicitation section 00 21 13 - Instructions to Bidders. **W9123823B0013 Amendment 0002 - Block 14 for a description of amendment changes BID submissions are due NLT 16 APR 2024 at 11:00AM PDT and Bid Opening will be at 2:00PM PDT 16 APR 2024. **W9123823B0013 Amendment 0001 - See W9123823B0013-0001 Block 14 for a description of amendment changes **This will be a set-aside for Small Business. SBA Size Standard: $45 million The U.S. Army Corps of Engineers (USACE) Sacramento District (SPK) requires to construction services to conduct erosion control and strengthen the levee protecting the city of Sacramento, California. In accordance with DFARS 236.204(i), the Government currently estimates the magnitude of construction for this project to be between $10,000,000 and $25,000,000. This solicitation will use PSC: Y1LC, Construction of Tunnels and Subsurface Structures and NAICS Code: 237990, Other Heavy and Civil Engineering Construction. Offerors must use contractors from the Pre-Qualified Sources List (PSL) for American River Common Features (ARCF) 2016 Sacramento River and American River Erosion Construction Contracts updated 27 September 2023 via Special Notice Posting (W9123823S0046) on SAM.gov. The government is presently lacking Caltrans EP real estate to support construction, however the government is optimistic the interests will be acquired before the date and time that receipt of proposals are due but there is some risk that the interests may not be acquired in time which would prevent the receipt and opening of proposals which in turn would preclude a contract award. The American River Common Features (ARCF) Erosion- Lower American River Site 1-1, Contract 3A project is located on the American River within the American River Parkway in Sacramento, California. Site 1-1 is located on the left bank looking downstream. The site roughly extends from the Union Pacific Railroad Bridge to approximately 1,800-feet upstream of the Interstate 80 Business Bridge. Construction access will be from Sutters Landing Regional Park to the west and Glenn Hall Park to the east. The primary intent of the project is to reduce the risk of levee failure by erosion during extreme flow events. The work includes approximately 2,500 feet of riverbank and river toe erosion protection and stabilization of the existing levee to protect critical infrastructure against the effects of erosion during large flood events. Build only, no design. Vegetation clearing (including the removal of select trees to four feet above existing grade) and the transplanting of elderberry shrubs within the project footprint will be performed by others prior to erosion protection and on-site habitat construction activities. The Contractor will be required to protect identified vegetation, structures, and utilities, remove stumps, strip and grub the project footprint, install temporary access ramps, and place silt fencing, construction chain link fencing and construction safety fencing along the project footprint, staging areas, and haul routes. After the project site has been prepared, the Contractor will excavate and regrade approximately 3,300 cubic yards of material from the downstream riverbank slope, as well as stockpile suitable excavated material for placement as engineered fill. The Contractor will install soil-filled rock slope protection on the waterside levee face and riverbank, install rock apron protection at two existing stormwater outfalls, place soil and rock to construct river toe protection and planting bench features, tie-in erosion protection elements to existing rock revetment features, place instream wood structures on the planting benches, and provide temporary erosion control for stabilization of disturbed soil areas. About 2,500 feet of the site will require working in the active channel of the American River to place material with associated turbidity control. The project will require import and placement of approximately 36,000 tons of FHWA Class I riprap, 30 tons of FHWA Class II riprap, 750 tons of FHWA Class VI riprap; 6,400 tons of FHWA Subbase A bedding, 100 tons of B4 bedding; 9,500 cubic yards of FHWA Class I soil-filled rock; 4,600 cubic yards of topsoil, 7,000 cubic yards of soil fill; 145 trees (for instream wood structures), and 1350 live cuttings to be planted on-site. The work is to be completed in late spring, summer, and fall of 2023 with an estimated Period of Performance of 380 days. The Contract award is expected by mid-January 2023. In-water work is limited to the period of July 1, 2023 to October 31, 2023. All erosion protection and heavy on-site habitat mitigation work must be complete by December 2023. The contractor must coordinate activities with Caltrans Capital City Bridge Widening Project and the City Two River Trails Project staff and contractor planned to occur near the Site 1-1 project footprint and within a similar construction timeframe. A separate site revegetation contract is planned for Spring of 2024.