9.21 Performance Levels and Trends Are Assessed

One Call Center Facility Owner Excavator Locator Project Owner Designer

Practice Statement:

Performance levels and trends are assessed against those of other organizations.


  • API/AOPL Voluntary Accident Tracking Initiative
  • Connecticut Department of Public Utility Control/Call Before You Dig, Inc.
  • Consolidated Edison Company of New York, Inc.
  • New Hampshire Public Utilities Commission
  • Tennessee One Call System, Inc.


One Call Center One Call Center

Facility Owner Facility Owner

Excavator Excavator

Locator Locator

Project Owner Project Owner

Designer Designer