A school building includes a covered exterior hallway or walkway. Is this covered exterior hallway or walkway covered by the asbestos-containing materials in schools rule? If so, does this include both the underside and roof of these areas?

Yes. Under 40 CFR part 763.83 of the asbestos-containing materials in schools rule, “school building” is defined to include “[a]ny portico or covered exterior hallway or walkway,” so the covered exterior hallway or walkway is covered. However, only the underside of the hallway or walkway is included; the roof is not.