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EXCAVATION PRACTICES NOT SUFFICIENT
Financial Partners
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 Alberta
accepted engineering pra ctices or guidelines.
Failure to use hand tools where required Platinum
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 Silver
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.
Appendix E: Regional Common Ground Alliance

Other insufficient excavation practices Excavator errors that do not fall under one of the above. Sponsors & Canadian Common Ground
Alliance Supporters

Appendix E: Regional Common Ground Alliance albeRTa CGa
Bronze
MISCELLANEOUS ROOT CAUSES Sponsors & Canadian Common Ground
Alliance Supporters PLATINUM
One-Call Centre error Includes all issues related to the centre such as incorrectly entered data,

ticket transmission failures, et al. albeRTa CGa

PLATINUM
Example: This would include damages that occurred because the centre’s Sponsors to follow
GOLD

database registry had not been updated to reflect correct location
of underground facilities.
Sponsors to follow
GOLD
SILVER

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
SILVER
is thought to have been locted, but it is found to be active after BRONZE

the excavation exposed the facility or damaged it.

Deteriorated facility Those situations in which an excavation disrupts the soil around the facility Atlantic
BRONZE

resulting in damage, failure or interruption of service. However, the aTlanTIC CGa
deterioration and not the excavation caused the facility damage.

aTlanTIC CGa
Previous damage Damage occurred during previous excavation.

Example: Pipe coating was damaged during a previous excavation and

was not reported.
bRITIsH ColUMbIa CGa
PLATINUM
Data not collected Damage occurred, but Root Cause was not identified.

bRITIsH ColUMbIa CGa
Example: Damage Investigator did not indicate a Root Cause.

PLATINUM
GOLD

Canadian Common Ground Alliance Canadian Common Ground Alliance
Canadian Common Ground Alliance

Best Practices Version 3.0 – October 2018
Best Practices Version 1.0 – October 2014 Best Practices Version 1.0 – October 2014

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SILVER
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BRONZE

BRONZE

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