How do utilities mark the tolerance zone?

Mark tolerance utilities zone
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How do utilities mark the tolerance zone?

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Operators generally mark the utility with a series of flags or paint marks placed directly over the buried utility. From the surface marks, the excavator will infer the tolerance zone is 24 inches from either side of the mark. KCC Staff is in the process of preparing regulations that more fully define marking requirements. We recommend that all operators with buried facilities greater than 8″ inform the excavator of the outside diameter of the facility in addition to providing a mark of its horizontal location.

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• Operators generally mark the utility with a series of flags or paint marks placed directly over the buried utility. From the surface marks, the excavator will infer the tolerance zone is 25 inches from either side of the mark. Kansas regulations require any buried facilities greater than 8″ be marked in such a way that the excavator is made aware of the outside diameter of the facility in addition to providing a mark of its horizontal location.

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