| CSI Code | Short Description | Extended Description |
| 02200 | Site Preparation |
| 02210 | Subsurface Investigation | Boring and Exploratory Drilling Core Drilling Geophysical Investigations Groundwater Monitoring Seismic Investigation Standard Penetration Testing Test Pits |
| 02220 | Site Demolition | Building Demolition Minor Site Demolition for Remodeling Selective Site Demolition |
| 02230 | Site Clearing | Clearing and Grubbing Selective Clearing Selective Tree Removal and Trimming Sod Stipping Stripping and Stockpiling of Soil Tree Pruning |
| 02240 | Dewatering |
| 02250 | Shoring and Underpinning | Foundation Grouting Grillages Needle Beams Sheetpiling Shoring Slabjacking Soil Stabilization Underpinning Vibrofloatation and Desensification |
| 02260 | Excavation Support and Protection | Anchor Tiebacks Cofferdams Cribbing and Walers Ground Freezing Reinforced Earth Slurry Wall Construction Soil and Rock Anchors |
| 02280 | Grade Adjustment and Abandonment of Existing Miscellaneous Structures |
| 02285 | Rebuilt Miscellaneous Structure |
| 02290 | Site Monitoring |