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| # | Regulations |
|---|---|
| 1 | - - Specific Excavation Requirements. |
| # | Letters of Interpretation |
|---|---|
| 1 | - 1926.651(j) - Requirements to prevent trench collapse during sheet-pile operations. |
| 2 | - 1926.651(j)(2) - Trench shield must extend 18" above excavation walls when below grade. |
