Specifications include, but are not limited to: Contractor shall provide either commercial or residential rooting, plumbing, maintenance and repair, modification and new installation services listed below to the Metro facilities. Services ("Services") are to be provided on an emergency and scheduled basis as described below. Contractor shall supply all labor, materials, equipment, permits, supervision, tools, transportation and all other items necessary to complete the services. Contractor shall protect the interior and exterior of buildings, their contents, and the people therein during the course of providing services. Contractor shall perform work activities in such a manner that they do not interfere with the normal activities of the building or its occupants.