Page 65 - CCGA Best Practices Version English

4-25: Emergency Excavation

Practice Statement: In the case of an emergency excavation, the
excavator notifies the notification service and owner and requests an
emergency locate.

Practice Description: Provincial regulations require excavators to request
locates including emergency situations.

An Emergency excavator locate request is defined as a loss of essential
service by a utility and an excavator work crew is on site or dispatched, or
there is an imminent safety hazard requiring a locate response by facility
owners within two (2) hours.”

4-26: Backfilling

Practice Statement: When backfilling, all facilities should be protected
from damage and unintended movement by following facility standards.
Practice Description: The excavator should provide suitable bedding
material to surround and protect the facility(s). The backfill should be
comprised of “clean material” (free from trash or debris), with the removal of
large rocks, sharp objects, and large chunks of hard packed clay which could
potentially penetrate the bedding material and damage the facility(s). All
backfill should be compacted to prevent undesired displacement of both the
backfill material and the facility(s).

4-27: Notification of Installation/Construction
Changes

Practice Statement: After installing underground facilities a contractor
should notify the owner if the as-built placement differs from the placement
shown on the construction drawings.

Practice Description: In order for a owner to maintain accurate records
of its underground facilities, contractors who have installed these facilities
should be required to notify the owner of the as-built location of the
underground facilities. In particular it is important to identify changes in
the planned alignment of the underground facilities these changes can be
horizontal and/or vertical deviations from the planned alignment. The owner
should establish standards that require notification if a deviation is beyond
specified tolerances (e.g. vertical deviation ≥150 mm, horizontal deviation
≥300 mm). It is the owner's responsibility to take appropriate action to
update and maintain its mapping records (As-built drawings) so that accurate
locates can be provided in the future.

Canadian Common Ground Alliance
Best Practices Version 3.0 – October 2018
59