Specifications include, but are not limited to: 1. Demolition and removal of existing mechanical piping, valves and fittings associated with the existing primary sludge valve vaults. 2. Cured-in-place pipe lining of existing 8-inch and 12-inch primary sludge mains. 3. Furnish and install new mechanical piping, valves and fittings associated with the existing primary sludge valve vaults. 4. Furnish and install new electrical duct bank. 5. Removal of existing electrical duct bank. 6. Removal and demolition of existing electrical equipment, cable, and conduit associated with the existing primary sludge valve vaults. 7. Furnish and install new electrical equipment, cable, and conduit associated with the existing primary sludge valve vaults.