Perform Oil Water Separator Cleaning at the Nashville International Airport. Inspect, service, clean, and provide semi-annual preventive maintenance for oil water separators (OWS) and follow all State, Federal, and local regulations. The contractor shall provide all parts, labor, components, materials, equipment, personal protective equipment (PPE), management, supervision, technical expertise, tools, and transportation necessary to perform the inspection, maintenance, and service requirements. Contractor shall conduct and document two (2) semi-annual inspections and perform a cleaning at each OWS on a semi-annual basis (April and October). Services shall be performed in accordance with manufacturers’ recommended procedures and original equipment manufacturer (OEM) standards. Materials removed from the OWS must be disposed of in accordance with all State, Federal, and local regulations by the Contractor at the Contractor’s expense. Contractor shall clean up any spillage during pumping or transporting operations at no additional cost to the MNAA. OWS shall be backfilled (as needed) with clean water to the appropriate levels following pumping service. Contractor staff assigned to project will maintain a MNAA, Airport Wide, badge that includes escort privileges for workers at the job site at all times.