Page 62 - BCCGA Best Practices Version 3.0

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can affect markings however are rain, snow, vegetation, high traffic,
construction, and so forth. Paint marks will be a length of 30cm to 90cm and
approximately 3 cm wide. All facility locators have the proper training to identify
varying surface and environmental conditions that exist in the field and which
marking methods to use.
Field marks should be placed at a minimum of 3-metre intervals and at any
directional changes. When placing marks in the field, the centre line of the
facility is to be marked. Facility structures greater than 40 centimetres (or 16
inches) will have the edges of the facility marked denoting the width of the plant
or structure in addition to the centre line. See examples below:
Chart on pg 43 of ORCGA
3-17 MULTIPLE FACILITIES IN “JOINT USE” TRENCH
PRACTICE STATEMENT: Multiple facilities in a “joint-use” trench are marked
individually and with corridor markers.
PRACTICE DESCRIPTION: The number of facilities marked on the surface is to
equal the number of facilities buried below. All facilities within the same trench
should be individually marked and identified. However, in situations where two
facilities share the same colour code (i.e., telephone and CATV), both facilities
should be identified and the marks placed on a parallel. There should be enough
distance between the markers to readily identify each of them. In circumstances
where a single facility owner/operator may not readily know the total number of
lines buried in the same trench, a corridor marker is to be used. The corridor
mark indicates the width of the facility.
3-18 FACILITY IDENTIFICATION
PRACTICE STATEMENT: The owner or operator of a facility is identified.
PRACTICE DESCRIPTION: The facility owner/operator is identified by the
markings placed at the time the facility is located. This practice is to prompt a
positive response for all located facilities within the requested area.
The National Utility Locating Contractors Association (NULCA) Marking
Standards recommend, “In situations where two facilities share the same colour
code (such as telephone or CATV) both facilities should be identified.”
Best Practices Version 3.0