Y1NC - CONSTRUCTION OF POLLUTION ABATEMENT AND CONTROL FACILITIES

Y1NZ - CONSTRUCTION OF OTHER UTILITIES

Y1PA - CONSTRUCTION OF RECREATION FACILITIES (NON-BUILDING)

Y1PZ - CONSTRUCTION OF OTHER NON-BUILDING FACILITIES

Z1NB - MAINTENANCE OF HEATING AND COOLING PLANTS

Z200 - NO DESCRIPTION AVAILABLE

Z2AA - REPAIR OR ALTERATION OF OFFICE BUILDINGS

Z2AB - REPAIR OR ALTERATION OF CONFERENCE SPACE AND FACILITIES

Z2AZ - REPAIR OR ALTERATION OF OTHER ADMINISTRATIVE FACILITIES AND SERVICE BUILDINGS

Z2BA - REPAIR OR ALTERATION OF AIR TRAFFIC CONTROL TOWERS

Z2BB - REPAIR OR ALTERATION OF AIR TRAFFIC CONTROL TRAINING FACILITIES

Z2BE - REPAIR OR ALTERATION OF AIRPORT TERMINALS

Z2BG - REPAIR OR ALTERATION OF ELECTRONIC AND COMMUNICATIONS FACILITIES

Z2BZ - REPAIR OR ALTERATION OF OTHER AIRFIELD STRUCTURES

Z2DZ - REPAIR OR ALTERATION OF OTHER HOSPITAL BUILDINGS

Z2EB - REPAIR OR ALTERATION OF MAINTENANCE BUILDINGS

Z2EC - REPAIR OR ALTERATION OF PRODUCTION BUILDINGS

Z2EZ - REPAIR OR ALTERATION OF OTHER INDUSTRIAL BUILDINGS

Z2FA - REPAIR OR ALTERATION OF FAMILY HOUSING FACILITIES

Z2FB - REPAIR OR ALTERATION OF RECREATIONAL BUILDINGS

Z2FC - REPAIR OR ALTERATION OF TROOP HOUSING FACILITIES

Z2FD - REPAIR OR ALTERATION OF DINING FACILITIES

Z2FE - REPAIR OR ALTERATION OF RELIGIOUS FACILITIES

Z2FF - REPAIR OR ALTERATION OF PENAL FACILITIES

Z2GC - REPAIR OR ALTERATION OF FUEL STORAGE BUILDINGS

Z2GD - REPAIR OR ALTERATION OF OPEN STORAGE FACILITIES

Z2GZ - REPAIR OR ALTERATION OF OTHER WAREHOUSE BUILDINGS

Z2HZ - REPAIR OR ALTERATION OF GOVERNMENT-OWNED GOVERNMENT-OPERATED (GOGO) ENVIRONMENTAL LABORATORIES

Z2JA - REPAIR OR ALTERATION OF MUSEUMS AND EXHIBITION BUILDINGS

Z2JZ - REPAIR OR ALTERATION OF MISCELLANEOUS BUILDINGS

Z2LZ - REPAIR OR ALTERATION OF PARKING FACILITIES

Z2NB - REPAIR OR ALTERATION OF HEATING AND COOLING PLANTS

Z2ND - REPAIR OR ALTERATION OF SEWAGE AND WASTE FACILITIES

Z2NE - REPAIR OR ALTERATION OF WATER SUPPLY FACILITIES

Z2PD - REPAIR OR ALTERATION OF WASTE TREATMENT AND STORAGE FACILITIES

Z2QA - REPAIR OR ALTERATION OF RESTORATION OF REAL PROPERTY (PUBLIC OR PRIVATE)