Heath Consultants Plunger Bars - Manual (Page 4)

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Bar Hole Procedure
WARNING
When bar holing in areas with poor venting (e.g. wall to wall concrete) or
when gas migration may follow the trench line to a structure, use extreme
caution to avoid hitting the gas pipe and potentially rupturing it. You may be
required to limit the depth of the bar hole or locate the utility line to reduce
the risk of hitting a gas pipe.
WARNING
When driving your bar into the ground, be aware of any undue resistance in
the ground which may be caused by an underground utility. If this happens,
cease pounding immediately.
WARNING
Keep the rod tip on the ground when starting a bar hole.
• Prior to placing any bar holes, read any signs on the street (such as those
placed by utilities) and look for the presence of any underground structures.
• Look for any underground markers, valve boxes, manhole lids, pedestals,
electric distribution transformers, telephone, cable and electric drops, curb
boxes on the gas and water lines and pre-existing mark outs. This includes
TV cable, street lights, traffic lights, hidden dog fences, sprinkler systems,
heated sidewalks, etc. This list is given just as an example and is not
exhaustive of all the things that could be present underground.
• Never knowingly bar hole over your own underground facilities or those of
another utility.
WARNING
The Plunger Bar is primarily intended for bar holing in soil. Using it to go through
hard surfaces (e.g. concrete, asphalt, road bed, etc.) may require excessive force
which may cause the bar to fail or result in injury. Should the bar become wedged
and stuck in the ground, trying to remove the bar by jerking it may cause bar failure
or injury. Alternative drilling tools should be used for hard surfaces.