The Technical Memorandum TM 2012-02 explains what to do with facilities for emergency response personnel. This was taken from the US Access Board and DOJ Commentary. There are basically Three type of areas within emergency response facilities:
1) Crew quarters that are used exclusively as a residence by emergency response personnel and the kitchens and bathrooms exclusively serving those quarters shall comply with the requirements of 233 (including 233.3.1) and 809 for residential facilities and residential dwelling units.
2) All other common use areas, elements, and spaces, including, but not limited to, parking, drinking fountains, public restrooms, meeting and training rooms, and conference rooms, shall comply with the 2012 TAS. Multi-story buildings and facilities shall comply with the accessible route requirements found in 206.2.3 unless exempted by 206.2.3, Exception 2, which states that in a public building that is less than three stories with less than 5 occupants on the upper or lower story, an accessible route is not required.
3) Truck bays, workshops, and other employee work areas, elements, and spaces used exclusively by emergency personnel for work shall comply with 203.9 and other provisions of the 2012 TAS applicable to employee work areas which state only approach, enter and exit is required.