Specifications include, but are not limited to: (5) High Speed Airport Runway Snow Blowers to be operated by Port Authority personnel to clean snow/ice/slush off runways, taxiways and other airport aeronautical areas during winter ; The snow blower must be capable of removing a plowed windrow of snow density of 25 lbs. per cubic foot at a rate of 8000 tons per hour and casting snow at a minimum of 100 feet. The vehicle must also be capable of snow blowing at a minimum speed of 25 miles per hour. For optimal operator view during work and minimal operating fatigue from the blower head vibration, the vehicle (s) must be capable of performing either/or, or both Front and Rear of the operator cab discharge in the same unit.