Does anyone know why there is a small amount of gas usage that shows up
when you use a steam meter? I can't find ANY equipment that may
accidentally have a natural gas consumption. Does it have something to
do with how equest analyzes a steam meter?

Here's a screenshot of my BEPU report.

The screenshot of my utility bills shows an elec bill and steam bill
(Correct), yet there is natural gas consumption AND steam consumption.
Weird:

James Hansen, PE, LEED AP