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nnovative <br /> onstruction <br /> oiutions <br /> ➢ Locate and mark all underground utilities through inspection and identification by the <br /> appropriate utility representative and or client representative . <br /> ➢ Assume all lines are " live" until shut - off is verified by an appropriate utility <br /> representative . Do not assume that abandonment of a facility site has resulted in the <br /> shut- off of utility supply . <br /> ➢ Inspect buildings adjacent to area of planned activity to identify cues which indicate the <br /> potential for underground and aboveground utility service ( i . e . natural gas valves, <br /> underground tunnels, water valves or metering pits , compressed air or gas lines ) . <br /> ➢ In the event that a utility representative will not mark utilities within the site boundaries, <br /> identify the utility feed location and observe visual cues identified above . Intrusive work <br /> must be conducted slowly and carefully, especially during the first 3 - 4 feet ( depth at <br /> which most utilities will be located ) <br /> Typical subsurface location marks are as follows : <br /> RED — electrical , <br /> YELLOW — gas/oil /steam, <br /> BLUE — water, <br /> GREEN — sanitary/storm drains/culverts, <br /> ORANGE — communications , and <br /> WHITE — proposed excavation or boring. <br /> 4 . 2 . 3 CORING EQUIPMENT <br /> Intentionally Left Blank <br /> 4 . 2 . 4 DRILLING EQUIPMENT <br /> Intentionally Left Blank <br /> 4 . 2 . 5 HEAVY EQUIPMENT <br /> Evaluate the use of heavy equipment in operations such as site clearing, grading, drilling and <br /> excavation or lifting . Controls should include equipment alarms , use of qualified flaggers, <br /> operators, equipment inspections, and any specific OSHA regulatory requirements . <br /> 19 <br />