AQMD ... and did you notice that they're in Diamond Bar, and almost inaccessible by anything but driving? There might be a bus stop within a mile, but it's probably on a route that runs maybe once an hour and takes at least 1/2 hour to get to a Metrolink stop.

I had to go to a meeting in Pasadena recently, flying into Burbank. I could have made it to the meeting in about an hour from the airport (Metrolink downtown, then Gold out to Pasadena), or 1 1/2 hour on a more direct-looking bus route (with a 1/2 hour layover at a transfer point). Instead, I got somebody else going to the meeting to swing into the airport and pick us up. 20 minute drive even at late peak. Carpools work better than transit if they can be arranged...