1.1
This Standard specifies requirements for preventing damage to underground infrastructure.
Note: Examples of underground infrastructure include
a) oil and gas pipelines;
b) electrical and telecommunication cables; and
c) water and sewer lines.
1.2
This Standard applies to ground disturbance in proximity to existing, deactivated, abandoned in-place,
or reserved for future use underground infrastructure.
1.3
This Standard identifies the damage prevention process and outlines its key elements that, when
consistently applied, will prevent and reduce damage to all underground infrastructure and enhance
public safety.
1.4*
This Standard does not apply to infrastructure that is
a) above grade; or
Note: Examples of above-grade infrastructure include overhead wires, pole- or tower-mounted devices, and
antennas.
b) installed below grade for private use on private land, where the landowner is both the excavator
and the infrastructure owner.
Note: With respect to the above exemptions, this Standard may still provide valuable guidance. The exempted user
of this Standard can determine the applicability and suitability of the guidance provided by this Standard.
1.5
In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to
satisfy in order to comply with the standard; "should" is used to express a recommendation or that
which is advised but not required; and "may" is used to express an option or that which is permissible
within the limits of the standard.
Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a
note accompanying a clause is to separate from the text explanatory or informative material.
Notes to tables and figures are considered part of the table or figure and may be written as
requirements.