I can guess the answer to my question, but am hopeful to be proved wrong:
our project is within the 1/4 walking distance to a bus stop with a single service. The closest light rail station is about 3/4 mile walking distance away. However, the bus service does serve the light rail station 4 stops away; ride time is under 10 minutes.
So, for all intents and purposes, the bus service operates like a shuttle to the light rail station. Buses run every 30 minutes during commute hours, and on the hour at other times.
Has anyone had any success with this argument?