Page 109 - CCGA Best Practices Version English

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EXCAVATION PRACTICES NOT SUFFICIENT

Failure to maintain marks The marks deteriorated or were lost and the excavator failed to request that
they be restored/ref reshed.
Failure to support exposed facilities Facility damage due to lack of support in accordance with generally
accepted engineering pra ctices or guidelines.
Failure to use hand tools where required
Sponsors to follow
Failure to test-hole (pot-hole) Failure to verify physical location of the facility when working within
tolerance zone as defined by accepted practices or guidelines.

Improper backfilling practices Damage caused by improper materials (ex. Large/sharp rocks) in the
backfill or i mproper compaction of the backfill.

Excavator failed to maintain clearance (defined by applicable guidelines,
law, and facility owners) from underground facilities when using power/
mechanical equipment.

Other insufficient excavation practices Excavator errors that do not fall under one of the above.

MISCELLANEOUS ROOT CAUSES

One-Call Centre error Includes all issues related to the centre such as incorrectly entered data,
ticket transmission failures, et al.
Example: This would include damages that occurred because the centre’s
database registry had not been updated to reflect correct location
of underground facilities.

Abandoned facility Damage related to abandoned facilities. Select a more specific root cause.
Example: The abandoned facility may have been located, instead of the
active facility. This does NOT include when an abandoned facility
is thought to have been locted, but it is found to be active after
the excavation exposed the facility or damaged it.

Deteriorated facility Those situations in which an excavation disrupts the soil around the facility
resulting in damage, failure or interruption of service. However, the
deterioration and not the excavation caused the facility damage.

Previous damage Damage occurred during previous excavation.
Example: Pipe coating was damaged during a previous excavation and
was not reported.

Data not collected Damage occurred, but Root Cause was not identified.
Example: Damage Investigator did not indicate a Root Cause.

Canadian Common Ground Alliance Canadian Common Ground Alliance
Canadian Common Ground Alliance
Best Practices Version 1.0 – October 2014 Best Practices Version 1.0 – October 2014
Best Practices Version 3.0 – October 2018
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