Whistle Bend 'rain garden' grows million dollar problem

Its name may suggest an appealing naturalfreshness, but the "rain garden" in Whitehorse's new Whistle Bend neighbourhood is attracting no bathers. Itlooks, and smells, like a sewage lagoon.

"We do have an algae bloom here, that's correct,"said RonBramadatwith the government's department of community services, as he surveyed the rain gardenthat'sblanketedwith green.

The "garden" built to bea retention and evaporation pond for storm run-off in Whistle Bendhas been overtaken by algae,forcing Yukon government officials to plan a million dollar fix.

"There's certain factors that all come together to create this particular condition," according to Bramadat.

One factor is an aeration system, installed two years ago,that's not operating effectively. Anotheris the simple reason the man-made pond existsin the first place people now live in the area.

"We now have lawns, peoplewithpets, people washing their cars.All that may contribute to the fact that we're bringing nutrients into thisretentionpond,"Bramadatsaid.

Algae blooms microscopicplantsflourish in freshwater that's rich inphosphorus and nitrogen.Fertilizers,soaps and sewage effluent are all sources of such nutrients.

Drain the pond and dig it deeper

Now the Yukon government is looking for someone to fix the problem, and help make the pond more pleasantand more effective at handling storm run-off.

The plan is to drain the pond, dig it deeper, and also install a pumphouse and forcemain to regulate the water level. A fountain and an aerating bubbling system will help discourage algae growth.

The work went out to tender last month, with bids ranging from $909,000 to $1.33 million.

Bramadat says the work should begin this fall, so next year residents won't be looking out at a scummy green pond.

"We'll have a lot of solutions in place so this will not happen again," he said.

The city of Whitehorseis also advising Whistle Bendresidents to avoid using lawn fertilizers and pesticides, pick up after their pets, and towash their vehicles at commercial car wash facilities.