Webworm would like to perform an Analysis/Examine Media check on the maps we've been provided. If it's applicable, his 'historical sites' interest might be useful if the base was built on top of an older facility. Also, where is building 2099?
Please put "game speak" in spoiler blocks.
There is minimal information to be had on the map other than altitudes, locations, perimeters, and related.
You can use it as the basis for an investigation/research roll, which I'll assume WEBWORM would do as well since he's the best investigator.
The info packet has the gate access information and regulations.
Doing research on building locations, Commander Henrich's office is at the base security HQ (2099), which is on the west end of the base along the south road.
There are 3 gates, 2 on the West end, 1 on the east. The north West gate is the main gate and is open 24 hours. The south west gate is the overflow gate and is only open during weekdays except for ship departures/arrivals. The east gate is usually closed except for excercises.
WEBWORM can gather some publicly available photos of the target building. It is adjacent to a uniform shop (which is the actual subject of the photo), but the building is separated from the uniform shop parking lot by a fence with a "restricted area" sign posted, but the fence does not have razor wire.
The records also show the building used to be an armory; if you can find the original blueprints (not on an open network, it appears), that might provide you with a floorplan.
You can make out some features from the public photo. The front entrance seems to be the only access that is regularly used, though there are side loading doors. The building AC looks like it has been refurbished, with a cooling plant on top. You could pull specs up for that, too, given time. Or someone might know a bit about it.