The first CCS in Oregon is now under construction, or maybe operational. It's in Arlington, near the junction of I-84 and S.R. 19 (John Day Highway). See Plugshare for details. Arlington is 136 miles east of Portland, so they'll need at least one more location in between. Hood River, 62 miles out, would be a good spot. The Dalles and/or Biggs are also good sites, albeit further east, and Cascade Locks is further west. There are already CHAdeMO at Cascade Locks, Hood River and The Dalles, so no-brainers to put CCS there too.