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TransCanada – CSR – Environment: TransCanada’s GTN natural gas pipeline crosses the Pend Oreille River in Idaho. We worked to safely and successfully re-establish river bed support under our pipeline. TransCanada – CSR – Environment: TransCanada’s GTN natural gas pipeline crosses the Pend Oreille River in Idaho. We worked to safely and successfully re-establish river bed support under our pipeline.

MINIMIZING OUR FOOTPRINT | Environment

Water Hydrostatic Testing

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TransCanada borrows fresh water from water sources to hydrostatically test the integrity of our pipelines. This process is subject to a prescriptive environmental management process.

All water used in the hydrostatic testing of our pipelines is tested, treated if required and returned to the environment in compliance with all applicable regulations.

As part of our efforts to minimize our environmental footprint, TransCanada has worked to advance Electromagnetic Acoustic Transducer (EMAT) technology. EMAT is a non-destructive in-line inspection tool that uses sound waves to detect defects in steel pipelines, which has allowed EMAT to be used as an alternative to the hydrostatic testing of pipelines, eliminating impact to water sources and resulting in considerable cost savings. TransCanada continues our work on this important innovative initiative as part of our commitment to protecting the environment.