Fact: There are no routine gas emissions from compressor stations. Any venting at the station would only be done under controlled conditions for pipeline and station maintenance or as a result of a pipeline emergency. There are no flare stacks proposed for our compressor stations and little to no gas emissions. TransCanada is recognized as a leader in greenhouse gas emissions management, with particular emphasis on methane emissions management programs.
Noise levels are regulated and will be at or less than 40 decibels at all areas within 1.5 km of compressor stations. Noise levels will be routinely monitored to ensure they remain in compliance with the appropriate local regulations. We engineer the stations to minimize the noise impact to the surrounding areas, including silencers and noise attenuation on the buildings. With this in mind, we contain our turbo compressors within acoustic enclosures inside our compressor buildings. The compressor buildings themselves are also purposely built to further attenuate noise emanations. We aim to operate even more quietly by ensuring our noise levels are no more than 45 decibels at our station fence line. This is equivalent to the sound of a refrigerator humming or a running stream, and is consistent with normal background noise in the area. As a point of comparison, normal conversation at one metre is 60 decibels.
Our compressor stations are unmanned and facility lights are shut off at night (except for safety lights over doorways) unless there are maintenance activities being conducted.