I would like to learn if anyone has experienced pursuing EAc1 with
Option 2.

1. is building simulation required?

No simulation is required.

2. What type of documentation is needed to show compliance with all
applicable criteria as established in the Advanced Energy Design Guide?

A table comparing the prescriptive measures in the design guide with
those implemented in the building.

3. Advanced Energy Design Guide uses 90.1 -1999 as a baseline? Does this
mean that the building must comply with the mandatory provisions
(Sections 5.4, 6.4, 7.4, 8.4, 9.4 and 10.4) in Standard 90.1- 1999 as
well?

The project will have to comply with the mandatory provisions of 90.1
for EAp2.

Any info that can be shared is greatly appreciated.

Marcus Sheffer