Excavator will be the current production model at time of delivery. The machines will have a 2018 or newer manufacture date. Certificates of Origin shall be provided to the State at time of delivery for each unit. Unit shall be reduced tail swing design. (<= 5’ radius). Diesel, minimum 100 SAE rated net flywheel horsepower minimum. Four Cylinder, 180 cubic inch minimum displacement. Tier 4 compliant. Shall be equipped with a 110-volt engine block heater. Air intake system shall be equipped with a precleaner. Sound suppressant muffler with a 90-degree elbow on the exhaust pipe if a vertical stack. Shall be equipped with an alarm system (light and/or audio) that will immediately alert the operator of high-water temperature and low oil pressure. Engine shall be protected to minus 35 degrees with extended life coolant.