A segment of a four-lane freeway (two lanes in each direction) has a 3% upgrade that is 1500 ft. long followed by a 1000 ft 4% upgrade. It has 12 ft lanes and 3 ft shoulders. The directional hourly traffic flow is 2000 vehicles with 5% large trucks and buses (no recreational vehicles). The total ramp density for this freeway segment is 2.33 ramps per mile. If peak hour factor is .90 and all of the drivers are regular users, what is the level of service of this compound-grade freeway segment?