BACK TO CATEGORIES Photo ID: 1501 (Click photo to view original size.) Category: Excavations Hazard: Employees working in excavation, filling with water, without a protective system and precautions from hazard of water. Standard Violated: 1926.651 Corrective Action: Employer should install trench box and appropriate system to remove water. Description: Employees working in excavation, filling with water, without a protective system and precautions from hazard of water.