#1   A radio frequency line locator is used to detect all known lines. This signal will bleed off onto other conductors, enabling the potential location of unidentified lines. (This does not guarantee that all utilities will be detected.)

#2   A grid search is then performed, allowing for further detection of utilities that may have been missed in the first procedure. The grid search is affected by the size of the conductor, soil conditions, and other factors; and, therefore, also does not guarantee that all utilities will be detectable.

#3   A passive grid search is then performed using a 50/60 cycle detector. This equipment is designed to detect the presence of energized electrical lines that are under a load at the time of the survey.

#4  Ground Penetrating Radar is used to confirm the findings of the lines located as per the above procedures, and also search for other lines that otherwise may have been missed, including none conductive lines.

By performing these four steps, every attempt is made to detect all traceable utilities (i.e., conductive lines, such as copper, steel, and aluminum). All non-metallic lines are considered undetectable, unless their presence is known, and a radio transmitter can be placed into the line and located using procedures outlined in sewer locating.  Although every effort is made to locate all known and unknown utilities, it should be understood that no procedures or equipment exist that can guarantee the detection of all lines in all situations. 

Therefore, Precision Locating does not guarantee the location of and is not responsible for any damages incurred due to:

• Unknown lines that are not detected.

• Undetected non-conductive lines.

• Undetected conductive lines not shown on as-builts provided by the customer.

• Undetected lines where no as-builts were provided.