The City of Abbotsford is investigating after residents witnessed large pillows of foam floating in a local creek a few days after laundry powder was spread on the rooftops of a nearby townhouse complex. Tom Ulanowski, who has lived at the complex at 4401 Blauson Blvd. on the side of Sumas Mountain for five years, said he's concerned the foam will harm wildlife in and around Clayburn Creek. "I was quite shocked and concerned," he said. "Literally, there were piles of foam eight feet high in some areas."