Masters groups in downtown Portland, OR

Hello-- I posted something in my blog here today about my trip to Portland next week, and it would be nice to find a masters group. Thought I may get more info by posting here. I'll be in Portland, OR from Mon Mar 30 (arrive around 4:30PM), until Thurs Apr 2 (leaving that afternoon). It is a business trip, but I should have time in the mornings/evenings to swim. I'm staying at the Embassy Suites, downtown Portland (319 SW Pine St), and am not planning to rent a car (get to/fr via MAX). My gym (24 Hour Fitness) does have a location in downtown Portland, just a few blocks from my hotel. If nothing else, I'll use that for treadmill runs/lifting/maybe swimming. Anyone have any info on masters groups in the downtown area and/or via a quick cab or with easy access via MAX? I welcome any suggestions or ideas. Thanks!