This is from the Parksville/Qualicum branch:

Feral Cat Program
If you are feeding feral (wild) cats or know anyone who is we will neuter them at no cost, or by donation, providing you will commit to their lifetime care. If you would like more information please call the shelter. We also have a package of information, which will let you know what is involved, as well as a video for loan, which describes the benefits of neutering feral cats.

I thought the Powell River branch offered assistance for ferals but I couldn't find it on the website.

I haven't looked into what all the branches offer so there could be more.