Climb a short WI3 step to the main waterfall. Belay from the base of the main waterfall as this route will need all of your 60m rope or better yet take a 70m. This climb is a monster amount of ice and starts off steeply and slowly kicks back to a long section of WI4. Belay off trees up top after your pump calms down.
Park at the Barronette Peak pullout and walk 0.4mi down the road to Creek #7. You will approach by walking up the creek until it narrows and then traverse diagonally upwards through the trees southward until you are above the next gully system to the south and can get to the base of the falls. See the the approach picture for clarity.
Consider bringing a rap ring for the slings up top.