Emergency repairs in one of Quebec City's two wastewater treatment plants have succeeded in stopping the release of untreated sewage into the St. Lawrence River. Some 21,000 cubic metres of raw sewage had been flowing untreated into the river every hour since Saturday night because of a broken valve. Late yesterday, an underwater diver working in the tunnel filled with wastewater managed to make repairs, allowing the treatment plant to resume operating at about 60 per cent capacity. It's expected to be back at full capacity today.