1. Sediment Removal: • Remove sediment, debris, and other material from the culverts to restore design flow capacity. This includes removing all accumulated materials from the inlet, outlet, and interior of the culverts. The District estimates 1,200 cubic yards of sediment is within the culverts. See Figures 1 and 2 for the project location, Figure 3 for the culverts’ as-built typical section, and Figure 4 for photos of the culverts’ intakes and outlets. 2. Inspection: • Inspect the culverts before and after sediment removal for any damage, structural issues, or signs of wear. • Provide a report detailing the before and after project conditions of the culverts. 3. Disposal: • Transport and dispose of sediment and debris in accordance with local, state and federal regulations. Sediment removed from the culverts will be placed at an approved site or at the District’s NSD Sediment Disposal Site located near 942 Hartle Court, Napa, CA (see Figure 2). 4. Restoration: • Restore the work area to pre-project condition upon completion, including grade and landscaping, if needed. 5. Safety Protocols: • Prepare a project specific safety plan and implement appropriate safety measures during the project, including but not limited to personal protective equipment, and environmental protection protocols. 6. Traffic Control Plan • Prepare and submit a temporary traffic control plan to City of Napa for approval; temporary traffic control plan shall be reviewed by District staff prior to being submitted to City of Napa. 7. Cost Proposal • Cost proposals should reflect the total cost to complete the Requested Services for both (2) culverts as well as an option to complete the Requested Services for only one (1) culvert.
