31 00 00 Earthwork 31 10 00 Site Clearing 31 20 00 Earth Moving 31 23 00 Excavation and Fill 31 25 00 Erosion and Sedimentation Controls 31 40 00 Shoring and Underpinning 31 62 00 Driven Piles 31 70 00 Tunneling and Mining 31 71 00 Tunnel Excavation 33 10 00 Water Utilities 33 11 00 Groundwater Sources 33 16 00 Water Utility Storage Tanks 33 40 00 Stormwater Utilities 33 80 00 Communications Utilities

31 00 00 Earthwork 31 10 00 Site Clearing 31 20 00 Earth Moving 31 40 00 Shoring and Underpinning 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 32 16 00 Curbs, Gutters, Sidewalks, and Driveways 33 10 00 Water Utilities 33 16 00 Water Utility Storage Tanks 33 30 00 Sanitary Sewerage 33 40 00 Stormwater Utilities Highway Contractor Industrial Contractor Rock/Gravel/Sand Specialty Contractor Utility Contractor

31 70 00 Tunneling and Mining

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

Building Contractor Highway Contractor Utility Contractor 31 00 00 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 32 30 00 Site Improvements 34 80 00 Bridges Division 33 - Utilities Division 35 - Waterway and Marine Construction