BACK TO CATEGORIES Photo ID: 1420 (Click photo to view original size.) Category: Construction Hazard: Equipment used in unstable grades creating the hazard of sinking/overturning Standard Violated: 1926.602(a)(3) Corrective Action: Designate clearly the road/grade areas and when visibility or weather conditions are impaired determine when to stop work Description: A trackhoe being used to dig a pond moved backwards into an existing area that had been previously dug sinking in it.