[squiggs96]

I don't know anything about the CBA, but I do know about the Kootenays. It is not called the East Kootenays. There is also no West Kootenays. The Regional District of East Kootenay is shortened to East Kootenay. There is only one of it, so it should never be pluralized to East Kootenays. However, if you refer to the East Kootenay and West Kootenay areas combined, you can call them the Kootenays.

Think of it like South and North Dakota. You wouldn't say there's a town in the South Dakotas. You'd say there is a town in South Dakota. If you wanted to talk about South and North Dakota, you could refer to both states as the Dakotas.