USGBC originally created this guidance document to address common questions project teams encountered when documenting WE credits. The calculations in these forms are fairly complex and are generally not addressed in the reference guide. The guidance document is intended to guide the user through the process of filling out the form, but is not intended to create any new requirements.

Question
In LEED review comments I've been referred to the Water Use Reduction Additional Guidance document. I didn't know this was a required reference document.