Cleanup of an Etobicoke creek is nearly complete after a spill of toxic sludge into the water from runoff following a massive industrial fire in August, according to Ontario's environment ministry. The sludge that entered Mimico Creek after the Aug. 11 fire at Brenntag Canada, a chemical distribution company, killed fish, birds and mammals. Spill containment berms, however, were still visible on the creek on Tuesday, more than two months after the spill.