he said "low grade" and that describes hardly any lower gorge climbs, whihc are pretty much all .10s
ozone's has several 5.8ish trad climbs, though they are kinda-sorta scary, at least compared to bomber-granite
broughtons has several moderatish trad climbs on the north face, hangign garden and red wall crags
beacon has the easiest/best easy trad climbs - se corner, most of young warriors, lower dod's jam, free for all
but, as you say, the bottom line is there really isn't much easy shit in the pdx area - what can you do....learn to aid-climb!