http://www.oregoncitylink.com/portland/transportation.htm
http://trimet.org/max/stations/index.htm
http://www.ci.sandy.or.us/index.asp?Type=B_BASIC&SEC={BF6D9F91-1204-479D-B3A5-B12572DA8DD1} -- SAM -- Sandy Area Metro
This bus will take a person from the mountain to Gresham Transit Center where one may grab a Blue Line train for a few stops to a transfer to Red Line and onward to PDX.