Yup, it says once a week. Provides restricted chemicals to make nylon for their carpets.
The Land: The City of Ottawa owns the underlying land (acquired during past municipal amalgamations).
The Tracks: The ties and track infrastructure are owned and independently maintained by the Arnprior-based manufacturing company, Nylene Canada.
A blog with some history on the line:
https://beachburg.blogspot.com/2019/01/a-most-unlikely-survivor-renfrew.html?m=1
The Operations: CN Rail operates the trains, providing the delivery logistics on a contractual basis.