I've had this idea since I moved here from Toronto in 2006.
Toronto has Tommy Thompson Park - unofficially known as the Leslie Street Spit. It's a 5km long (and growing) artificial headland and bird sanctuary created by dumping the city's clean fill into Lake Ontario. It's mostly old brick and clay.
It's an unbelievably cool place, not far from the city centre. It's a birdwatching mecca and there are dozens of garbage trucks coming and going all day.
Victoria (or any other municipality in the CRD) should create an artificial wilderness sanctuary in the same vein. Redirect all "clean fill" bricks, rock and soil to one location in the CRD. Put geo-engineers and environmentalists on the design panel, and make a new, and very cool park.
I understand the ocean is under Federal jurisdiction, and we don't have nearly as much material to contribute as Toronto, but I still like the idea.
Here are some pics of Toronto's.