Start at the Beaver Basin area (no real trailhead).
2 miles round trip.
Starting elevation is 10,500
Another approach is to hit the mountain (see map) more Northerly and avoid the saddle.
Head Northwest following the drainage to the base of the saddle between Green (to the Left with radio tower) and Waas (to the Right). As you enter the talus/scree a faint trail helps. The climbing up onto the Waas-Green saddle it is steep and short. Once on the saddle, turn east and follow an obvious zigzagging route thru the talus.
No special gear, just sun screen and water.