I live nearby. Looking at the Sooke land registry data and aerial imagery: the 3 lots with street numbers 2080, 2070 and 2060 (the 3 closest to Sooke Road) are all owned by the Sooke local government, and are being used as a single large storage yard.

Mainroad Contracting is the company that currently has the contract for road maintenance for all south Vancouver Island. They use this yard (and many others in the region) for staging equipment and supplies, but they're just a government contractor with permission to use this yard.