31 10 00 Site Clearing 33 40 00 Stormwater Utilities Utility Contractor 31 22 00 Grading 33 10 00 Water Utilities 34 71 00 Roadway Construction 31 20 00 Earth Moving 31 23 00 Excavation and Fill 31 25 00 Erosion and Sedimentation Controls 33 30 00 Sanitary Sewerage General Contractors & Specialty Contractors Highway Contractor

Cleaning/Restoration Services Parking Lot Maintenance Stormwater Management Products 31 00 00 Earthwork 31 23 00 Excavation and Fill 33 30 00 Sanitary Sewerage 33 40 00 Stormwater Utilities 33 70 00 Electrical Utilities 33 80 00 Communications Utilities 34 71 00 Roadway Construction Division 44 - Pollution and Waste Control Equipment

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

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 25 00 Erosion and Sedimentation Controls 31 30 00 Earthwork Methods 31 50 00 Excavation Support and Protection 32 05 16 Aggregates for Exterior Improvements 32 10 00 Bases, Ballasts, and Paving 32 18 00 Athletic and Recreational Surfacing 32 30 00 Site Improvements 32 32 00 Retaining Walls 32 80 00 Irrigation 32 90 00 Planting 33 00 00 Utilities 33 10 00 Water Utilities 33 30 00 Sanitary Sewerage 33 40 00 Stormwater Utilities 33 70 00 Electrical Utilities 34 71 00 Roadway Construction Highway Contractor Industrial Contractor Utility Contractor

Building Material Suppliers Chemical Suppliers Equipment Rental and Supply Highway Contractor Mobile/Trailer Offices Parking Lot Maintenance Safety Supplies 02 50 00 Site Remediation 03 01 00 Maintenance of Concrete 03 10 00 Concrete Forming and Accessories 07 10 00 Dampproofing and Waterproofing 07 18 00 Traffic Coatings 07 50 00 Membrane Roofing 10 14 53 Traffic Signage 31 22 00 Grading 31 25 00 Erosion and Sedimentation Controls 32 16 00 Curbs, Gutters, Sidewalks, and Driveways 32 17 00 Paving Specialties 32 18 00 Athletic and Recreational Surfacing 32 30 00 Site Improvements 32 32 00 Retaining Walls 33 16 00 Water Utility Storage Tanks 34 71 00 Roadway Construction Division 35 - Waterway and Marine Construction

34 71 00 Roadway Construction Highway Contractor Rock/Gravel/Sand Trucking and Hauling

Building Contractor 31 00 00 Earthwork 33 00 00 Utilities 34 71 00 Roadway Construction

05 50 00 Metal Fabrications Division 31 - Earthwork 31 00 00 Earthwork 34 71 00 Roadway Construction 34 71 13 Vehicle Barriers 34 80 00 Bridges Division 33 - Utilities Division 35 - Waterway and Marine Construction 03 00 00 Concrete

Building Contractor 31 23 00 Excavation and Fill 34 71 00 Roadway Construction Highway 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 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 40 00 Shoring and Underpinning 31 50 00 Excavation Support and Protection 31 62 00 Driven Piles 31 63 00 Bored Piles 31 70 00 Tunneling and Mining 31 71 00 Tunnel Excavation 31 71 16 Tunnel Excavation by Drilling and Blasting Construction Management Division 31 - Earthwork Highway Contractor Utility Contractor 33 80 00 Communications Utilities 34 40 00 Transportation Signaling and Control Equipment 34 70 00 Transportation Construction and Equipment 34 71 00 Roadway Construction 34 71 13 Vehicle Barriers 34 80 00 Bridges 01 45 00 Quality Control

Highway Contractor 31 00 00 Earthwork 31 20 00 Earth Moving 31 22 00 Grading 31 62 00 Driven Piles 34 71 00 Roadway Construction 34 80 00 Bridges Division 35 - Waterway and Marine Construction

01 56 00 Temporary Barriers and Enclosures 32 30 00 Site Improvements 34 71 00 Roadway Construction Division 02 - Site Construction

31 22 00 Grading 32 17 00 Paving Specialties 32 30 00 Site Improvements Design Build Highway Contractor Residential/Multi Family Contractor 32 16 00 Curbs, Gutters, Sidewalks, and Driveways 34 71 00 Roadway Construction Parking Lot Maintenance

Division 02 - Site Construction Division 31 - Earthwork Division 33 - Utilities Division 34 - Transportation Highway Contractor Utility Contractor 34 80 00 Bridges 34 71 00 Roadway Construction 32 05 16 Aggregates for Exterior Improvements 32 10 00 Bases, Ballasts, and Paving 32 16 00 Curbs, Gutters, Sidewalks, and Driveways 32 30 00 Site Improvements 32 32 00 Retaining Walls 33 00 00 Utilities

03 31 00 Structural Concrete 31 00 00 Earthwork 34 71 00 Roadway Construction 34 80 00 Bridges Rock/Gravel/Sand