31 00 00 Earthwork
31 01 00 Maintenance of Earthwork
31 01 10Maintenance of Clearing31 01 20Maintenance of Earth Moving31 01 40Maintenance of Shoring and Underpinning31 01 50Maintenance of Excavation Support and Protection31 01 60Maintenance of Special Foundations and Load Bearing Elements31 01 62Maintenance of Driven Piles31 01 62.61Driven Pile Repairs31 01 63Maintenance of Bored and Augered Piles31 01 63.61Bored and Augered Pile Repairs31 01 70Maintenance of Tunneling and Mining31 01 70.61Tunnel Leak Repairs