I don't think the matches at Renton are on the same regular "second Saturday", "third Sunday" schedule as USPSA/IDPA/Steel/Cowboy; they shoot on available weekends, and it might never show on the calendar.
I stopped shooting 3-Gun six or eight years ago, but we do have 3-gun episodes hosted by Doug, who both shoots and organizes 3-gun matches around the country.
Check out gunrobot's blog; he also shoots some of the area long gun "tactical" matches.