OP UPDATE:

I thought I'd post an update for those who might need to renew their US passport at the Calgary consulate.

Made an appointment for passport services on the consulate's website, filled out the DS-82 form, took it all with me (plus a copy, as the website says that I should do) and a self-addressed envelope to the consulate. Went through security (twice) and spent about an hour just sitting. US citizens seem to get preferred treatment in terms of getting priority to go through the lines, but no one seemed to be in any hurry to get anything done.

Was able to pay the passport fee using a credit card, and I submitted my passport with my application but after waiting about 45 minutes I got in back with 4 holes punched clear through it and was told that my new passport would arrive in around 2 weeks. So I still have my passport, but I can't really use it for traveling.

As an aside, although the consulate's directions in the website says to provide an original and a copy of the application (and two photos), when I asked if they wanted the copy or the second photo I was told "no" and asked why I had them. Apparently, the people who write the directions are the same people who write the US tax code....


ETA: For those who wonder about such things, my new passport was received exactly 1 week after I applied for it at the consulate.