The work will include removal of remaining grit/sediment, and proper disposal in accordance with federal, state, and local regulations. The Aeration basin must be fully cleaned and inspected to ensure it is ready for the next phase of repair. 4.1. Preparation and Coordination Coordinate with City/Plant staff for project scheduling and Aeration basin shutdown. Implement necessary safety and confined space entry procedures. Provide all equipment (pumps, hoses, tankers, etc.) for sludge transfer. 4.2. Sludge Transfer After liquid removal, remove all residual grit, sand, and sludge from the bottom of the Aeration basin. Perform manual or mechanical cleaning (Vacuum Truck, hydro-excavation, etc.) to remove all solids and debris. Inspect and report any visible damage to the aeration piping system or other visible equipment. 4.3. Disposal Transport and dispose of all removed solids, grit, and sludge at an approved disposal facility. Provide disposal manifests, weight tickets, and any additional documentation to the Owner. 4.4. Site Restoration and Demobilization Clean all work areas and remove all equipment and temporary materials. Restore the site to original condition. Conduct a final inspection with the Owners representative.
