Specifications include, but are not limited to: Mobilization/Demobilization. Prepare and submit a traffic control plan and implement approved traffic control plan including manpower & devices. Saw-cut, remove, and replace AC paving, temporary paving and base material and concrete underlay. Provide and install all excavation safety measures in accordance with State Labor Code Sections 6705 and 6707, trench excavation plan requirement and sheeting, shoring and bracing. Furnish and install 12-inch diameter PVC C-900 (Class 305, DR 14) pipe with locating wire, restraints, all fittings (ductile iron), and connections to existing pipelines. Furnish and install 12-inch diameter HDPE PE4710 (Class 200, DR 11) pipe with 24-inch Steel Casing with locating wire, restraints, all fittings (ductile iron), and connections to existing pipelines.