Page 73 - CCGA Best Practices Version English

Practice Description: It is critical that the locators are trained in reading
facilities distribution maps and associated symbology to assist in determining
the location of the buried facilities. The locator utilizes both locating
equipment and mapping to provide locates. Where there is a discrepancy
between the mapping and the location as determined by locating equipment,
the locator must notify the facility owner of the issue. The facility owners
should be responsible for verifying any such discrepancies as part of editing
their mapping databases.

5-3: Excavator’s Responsibilities and Use of Mapping

Practice Statement: The excavator provides accurate excavation location
information to the notification service.
Practice Description: The excavator takes responsibility for giving accurate
excavation location information to the notification service. This information
includes street address, street intersection, legal description, or other
acceptable format and latitude/longitude if feasible. A list of requirements is
found in Best Practice 2-16.
If the excavator cannot meet the above criteria, the excavator directly
coordinates with the notification to establish the excavation area for the
purposes of description on the locate form. At times, it may also be required
for the excavator to coordinate with the facility locator in order to establish
the location.

5-4: Owner Responsibilities for Mapping Records
Practice Statement: The owner should collect and maintain records for the
location of its buried facilities.

Practice Description: The owner should ensure that its records are of
sufficient detail and accuracy, and referenced to a defined datum system
(e.g. permanent physical markers, survey monuments, GPS coordinate
systems, etc.), in order that the location of its buried facilities can be re-
established at a later date and that subsequent users have an adequate level
of confidence to:

1. determine the areas to which records apply
2. correctly identify the facilities being described
3. determine the spatial accuracy of the facilities' stated position
4. determine the completeness of the record (e.g. all facilities shown, only
trunk lines shown, abandoned facilities not shown, etc.).

Canadian Common Ground Alliance
Best Practices Version 3.0 – October 2018
66