Highway Contractor HVAC – Sales/Service/Repair Residential/Multi Family Contractor Utility Contractor 02 00 00 Existing Conditions 02 41 00 Demolition 02 50 00 Site Remediation 02 60 00 Contaminated Site Material Removal 02 80 00 Facility Remediation 23 00 00 Heating, Ventilating, and Air Conditioning 23 00 01 Operation and Maintenance of HVAC Systems 23 09 00 Instrumentation and Control for HVAC 23 30 00 HVAC Air Distribution 26 30 00 Facility Electrical Power Generating and Storing Equipment 31 00 00 Earthwork 31 05 16 Aggregates for Earthwork 31 10 00 Site Clearing 31 20 00 Earth Moving 31 22 00 Grading 31 23 00 Excavation and Fill 31 23 19 Dewatering 31 25 00 Erosion and Sedimentation Controls 31 30 00 Earthwork Methods 31 50 00 Excavation Support and Protection 32 32 00 Retaining Walls 33 10 00 Water Utilities 33 40 00 Stormwater Utilities 33 46 00 Stormwater Management Division 23 - Heating, Ventilating, and Air Conditioning 34 70 00 Transportation Construction and Equipment 34 71 00 Roadway Construction

23 00 00 Heating, Ventilating, and Air Conditioning 23 00 01 Operation and Maintenance of HVAC Systems 23 09 00 Instrumentation and Control for HVAC 23 30 00 HVAC Air Distribution Division 22 - Plumbing Division 23 - Heating, Ventilating, and Air Conditioning

22 00 00 Plumbing 22 11 00 Facility Water Distribution 22 30 00 Plumbing Equipment 22 40 00 Plumbing Fixtures 23 00 00 Heating, Ventilating, and Air Conditioning 23 00 01 Operation and Maintenance of HVAC Systems 23 09 00 Instrumentation and Control for HVAC 23 30 00 HVAC Air Distribution Construction Management Design Build Industrial Contractor

23 00 00 Heating, Ventilating, and Air Conditioning 48 10 00 Electrical Power Generation Equipment 48 14 00 Solar Energy Electrical Power Generation Equipment Building Contractor Division 48 - Electrical Power Generation