If some tenants in a multi-tenant office building prefer to use their own cleaning service rather than the one the management uses on the rest of the building, can those spaces be excluded from the audit? If so, do they need to account for less than 10% of the total gross square footage of the building? Or, if those tenants will allow it, can their spaces be included in the audit, and counted, even though they are not under the control of the management?