(Portland, OR) -- The U.S. Army Corps of Engineers is planning to bury power cables under the Columbia River. The Cascade Renewable Transmission Project would bury nearly 79 miles of 12-inch-high voltage direct current cable under the river. A hydroplow would bury the cable 10 to 15 feet under the river bottom. At Bonneville Dam it would be buried 34 feet below the dam. Public comment is being taken on the project through February 4th. Burying the cable could affect the aquatic ecosystem, navigation, recreation and water quality.