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In 2011 the CSA published a document titled "Mapping of Underground Utility Infrastructure”. This standard defined SUE and set guidance for the collection and depiction of subsurface utility information.
CSA S250 sets out requirements for classifying the accuracy of newly installed or exposed infrastructure. The CSA S250 accuracy levels provide a finer level of detail to define the positional location of the infrastructure which translates into a better defined reliability in the accuracy of the record. CSA S250 compliments rather than replaces ASCE 38-02.
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