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* Underground water lines . <br /> * Underground sewer lines . <br /> 3. 1 . 1 Traffic Hazards <br /> Stay at least 10 feet away from moving equipment . If closer than <br /> 10 feet : <br /> * Keep equipment in sight at all times . <br /> * Inform the operator of your location . <br /> The working area will be closed to traffic with barricades , <br /> caution tape, cones , and other traffic control equipment . If the <br /> area cannot be barricaded, a flagperson will be assigned to <br /> direct traffic . <br /> No unauthorized or unessential vehicle will be allowed to <br /> enter the barricaded area. <br /> 3. 1 . 2 Open Excavation Pit Hazards <br /> Open excavation pits shall be clearly marked and barricaded . <br /> No confined space entry will be allowed . If a person falls <br /> into an open pit : <br /> * Do not enter the excavation pit . <br /> * If the person is conscious and can move, lower a ladder <br /> into the pit so the person can climb out . <br /> * If the person is unconscious , call the fire department . <br /> DO NOT ENTER THE EXCAVATION PIT . <br /> 3. 1 . 3 Underground Power Lines <br /> Call U. S . ALERT at least 3 days before commencing field <br /> work . The Owner will identify above ground structures and <br /> utilities and will provide as-built blueprints for <br /> contractor use . If the location of underground utilities <br /> such as water , sewer , or electrical lines is still unclear , <br /> the contractor will obtain the service of a utility location <br /> company before beginning any excavation . An area for an <br /> excavated soil stockpile will be provided adjacent to the <br /> excavation . <br /> If a power line is discovered or damaged during the work : <br /> Page - 6 <br />