TC Energy (Formally “TransCanada Pipelines”) will be doing some maintenance on their pipelines in the area in the form of an “Inline Inspection” where a smart pig is run down the pipelines to test the line.  With this test there is some noise in the form of a “Blowdown."  The blowdown would be approximately 10 minutes per day between the hours of 07:00 and 14:00 between the dates of September 17-29, 2019. 

For further details, please read the Blowdown Fact Sheet.