Let's Stop With the Stupid.

"An accommodation is a means or method outside of Section 508 standards designed to assist users with disabilities in cases where the application of current Section 508 standards is neither feasible nor helpful."

Look here, https://www.hhs.gov/web/section-508/accessibility-accomodation/index.html, a sensible approach to documents that should NOT be "remediated" for compliance with Section 508. You are wasting your time and yours or your client's money.

Example: A map. How are you going to describe a map in words that in any way is "equivalent" to what a sighted user gets. 

Example: Documents with large tables."It is unreasonable to expect a person using a screen reader to sit through the audible reading of a long table."

Much as we would like accessibility to be universal, we can't climb every wall, no one can.