910	BUILDING MAINTENANCE AND REPAIR SERVICES
91001  *	Acoustical Ceilings and Walls: Cleaning, Installation, Restoration
91002  *	Background Music Services
91003  *	Building Cleaning, Exterior
91006  *	Carpentry
91009  *	Carpet Cleaning, Dyeing, Installation and Repair
91010  *	Chimney Installation, Maintenance and Repair
91011  *	Drapery Installation and Repair
91013  *	Elevator Installation, Maintenance and Repair
91016  *	Energy Conservation Services (Including Audits)
91020  *	Escalator Installation, Maintenance and Repair
91025  *	Flooring to Include Refinishing and Sealing
91027  *	Garbage/Trash Removal and Disposal
91030  *	Glass Replacement
91036  *	Heating, Air Conditioning, and Ventilation Services
91037  *	Incinerator Repair and Maintenance
91038  *	Insulation and Asbestos Installation and Removal Services
91039  *	Janitorial/Custodial Services
91045  *	Lathing and Plastering
91046  *	Lead Poisoning Control and Reduction
91048  *	Locksmith Services
91051  *	Masonry and Concrete
91053  *	Metal Work
91054  *	Painting and Sandblasting Services
91059  *	Pest Control (Including Termite Inspection)
91060  *	Plumbing
91061  *	Plant Maintenance, Indoor
91062  *	Protection of Building From Weather or Vandalism
91063  *	Public Utilities: Water, Sewer and Gas
91064  *	Relocation, Building
91065  *	Remodeling and Alterations
91066  *	Roofing, Gutters, and Downspouts
91067  *	Security Lock-Bar Installation
91068  *	Septic Tank Services
91069  *	Shelters, Carports, Portable Buildings, etc.
91070  *	Sludge Removal (Building)
91073  *	Tile: Floors and Walls
91074  *	Wallpapering Services
91075  *	Wall and Ceiling Repair and Replacement (Including Drywalling)
91076  *	Welding Services
91077  *	Water Purification/Softening Services
91078  *	Weather and Waterproofing
91079  *	Window and Door Installation, Maintenance and Repair
91081  *	Window Washing Services
91082  *	Wiring and Other Electrical Services