Carbon dioxide equivalent (CO2 equivalent)
Measure used to compare the emissions of various
greenhouse gases based on their global warming
potential. Expressed in carbon dioxide (CO2),
a primary greenhouse gas.
Criteria air contaminants
Group of common air pollutants reported to
federal, provincial and state agencies, and released
from different sources, including incineration,
industrial production, fuel combustion and
transportation vehicles.
Days away
Measure of any work-related injury or illness that
prevents a worker from reporting to work on the
next calendar day.
Fines and penalties
Penalties levied against the company as a result
of regulatory citations. Fines and penalties in
a particular year often relate to activities in
prior years.
Fuel cell
Electrochemical device that combines hydrogen
and oxygen to create electricity, heat and hot
water for different residential, commercial and
industrial applications.
Gate station
Point of entry for natural gas leaving the transmission
system into the local distribution system.
Greenhouse gas emission intensity
Amount of greenhouse gas emissions per unit of
energy delivered on energy transportation and
distribution systems. Measures an operation's
environmental efficiencies.
Indirect greenhouse gas emissions
Emissions released during electricity production
for Enbridge's use.
Major incidents
EH&S incidents that result in a critical employee
or contractor injury or fatality, significant
regulatory enforcement action, a liquid spill of
more than 100 barrels, or significant adverse
impact to the environment.
Megawatt
Unit of electrical power equal to one million watts
or one thousand kilowatts.
Net emissions
Measure of the company's greenhouse gas impact
on the global atmosphere after accounting for
climate change actions.
Nitrogen oxides (NOX)
Nitrogen-based and oxygen-based compounds
produced by combustion processes. NOX emissions
contribute to acid rain and ground-level
ozone (smog).
Regulatory notification
Formal written notification by regulators that
Enbridge may not be adhering to the law,
regulation or permit requirements. Examples of
notifications include formal warnings, enforcement
actions, summons and charges, notices of
violation and stop and control orders. Notifications
do not include field inspection reports or other
informal communications. Notifications may
result in fines or penalties, or may be rescinded.
Sulphur dioxide (SO2)
Gas formed by the burning of fossil fuels,
including fuel oil and diesel fuel, that contain
small amounts of sulphur. SO2 emissions can
result in acidification of soils and lakes.
Volatile organic compounds (VOCs)
Gases and vapors in hydrocarbon fuels. VOCs
react with nitrogen oxides in sunlight to produce
ground-level ozone (smog).
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