This cache is not at the posted coordinates but is within 3km. To locate this cache you must complete the nearby Kanaka Creek Regional Park adventure lab which can be accessed on the adventure lab mobile app (if you dont know what this is and need more information please dont hesitate to message me).
You can also access the adventure lab here: Kanaka Creek Regional Park
As you work through and complete the Adventure Lab, five journal entries will be unlocked revealing the coordinates for this adventure lab bonus cache.
If you plan on completing the adventure lab all at once, I'd recommend completing the Bell-Irving hatchery stage last as this bonus cache is closest to that stage. The adventure lab has been set up so that it doesn't have to be completed in any particular order.
Due to construction, approach this cache from the East.
This bonus cache can be found at: N49 12.ABC W122 30.DEF