Our Environmental Performance

MONITORING & REMEDIATING PAST ACTIONS

Throughout our Canadian and U.S. liquids and gas pipeline systems, we conduct programs to assess historic sites, and take corrective action, as needed. Some of these sites have been in existence for more than 50 years and, in many instances, the contamination has resulted from a practice that was acceptable in the past, but that is now considered environmentally hazardous. We focus our activities on facility sites where, based on our risk assessments, there may be potential impacts from past practices.

OUR PERFORMANCE

Some examples include:

• We reviewed 36 historic leak sites on our Liquids Pipelines system in Canada and the United States. In some cases, further testing or remedial actions were carried out to address residual contamination. We closed five sites last year to the satisfaction of the regulatory agencies.
• We inspected 34 stations and terminals on our Liquids Pipelines system in Canada and the United States for historic contamination. This involved a review of past history and surrounding land use as well as groundwater monitoring and testing. No significant issues were identified. No issues requiring immediate action were identified.
• Our Springtown plant in Springtown, Texas treats and processes gas as part of our U.S. Natural Gas Business. Past operations at the plant, before Enbridge ownership, released hydrocarbons, which have been detected in local groundwater. In 2004, to fully determine the impacts of this contamination on the local environment, we added groundwater monitoring wells at the site. We are working closely with state regulators to evaluate this issue.

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At Enbridge, there are no dividing lines between good business practices and being a responsible company — one that is ethical, is a steward of the environment, is safe, engages its stakeholders and is attentive to social needs.

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