Tronco's General Arts Floors was in Arcadia Lakes in the office/retail plaza which is just behind (or in front of) the Arcadia Lakes lily pond which has been the subject of local controversy lately.
I'm pretty sure I've seen work by Tronco's and found it fine. I know I've seen their truck around for years. Their new location is 5127 Two Notch, which puts it pretty close to The Impulse Club, but I can't quite visualize it.
I have also wondered off and on over the years where the Arcadia Lakes town hall is. Turns out it is in this plaza.
UPDATE 2 November 2011 -- Here are some pictures of the back side of the store (with floor samples):