Provide qualified contract labor, on a reoccurring basis, for the fabrication, assembly, construction, installation, modification, testing, inspection, operation, maintenance, and repair of LPG and natural fuel gas piping systems and components, including, but not limited to: storage system containers, high/low volume pressure pipes (PE, copper, and steel); first and second stage regulators; regulator monitoring stations; gas manifolds; vent piping; manual/electronic shut off valves; and, millivolt/low/high voltage controls. As part of contract, Bidder shall be required to service the gas components of various types of equipment including: water heaters; water boilers; steam boilers; forced hot air furnaces; and, food service apparatus. Services shall commonly require working with live gas exerting volume pressures of up to 100 PSI. Project work shall typically include: installation of gas lines; installation of fuel gas piping systems; construction and deactivation of bulk propane plants; construction and maintenance of gas monitor regulator stations; above/below ground gas leak detection, including aspiration of gas below grade; application of cathodic protection; location detection of underground gas service lines; rebuilding of large capacity gas valves and regulators; creating heat fusion joints; installation of over-pressure protection devices; and, installation, servicing, and preventative maintenance of various type water heaters.