We are working on a 8 story + Basement Courthouse in Northern California. We have a private parking garage in the basement with 21 parking spots just for the Judges. Since there are only a small number of people using this entry (max would be 21 but most days would be less), are we still require to have the 10' walk off mat? It is a private entrance used only by a few, so will that really be considered a regularly used entrance?