ADV = OFF = 16-bit. So, you have a 16-bit recording. The extra 8-bits are padded with zeroes.
Sample rate, I'm less sure. Either:
[1] the UA-5 takes its sample rate cue from Wavelab and output a 96kHz signal, anyway, or
[2] the UA-5 output 44.1kHz and you'll have to correct the sample rate in the WAV header so it's 44.1kHz
Whether [1] or [2], you'll know the moment you listen to it - if the UA-5 output a 44.1kHz sample rate and Wavelab wrote a 96kHz header, it'll sound funky!