9.20 Results Are Quantified Against a Standardized Risk Factor

One Call Center Facility Owner Excavator Locator Project Owner Designer

Practice Statement:

Results are quantified against a standardized risk factor. The risk factor considers a stakeholder’s exposure to potential damage. This risk factor may be based on factors such as the number of miles of line installed or the number of one call center notification tickets. For example, a risk factor may compare how many underground damages occurred in a certain time period versus the total number of notification tickets issued.


  • Connecticut Department of Public Utility Control/Call Before You Dig, Inc.
  • Consolidated Edison Company of New York, Inc.
  • National Transportation Safety Board Safety Study: Protecting Public Safety through Excavation Damage Prevention (NTSB/SS-97-01)


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