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Portland, OR—The Oregon Department of Environmental Quality issued a $46,512 civil penalty to Knife River Corporation, for causing pollution to the Middle Creek drainage and the Multnomah Channel, and for violating conditions of a National Pollutant Discharge Elimination System (NPDES) Permit issued for the Angell Quarry. In February and March 2017 the quarry discharged extreme levels of turbidity to the Middle Creek drainage and ultimately to the Multnomah Channel. Also, in March 2017, state inspectors observed multiple violations related to erosion and sediment control. The quarry is located at 14545 NW Saint Helens Road in Portland.

DEQ issued this penalty because turbidity in the water column and deposition of sediments can degrade water quality and may harm aquatic life by covering up food sources, abrading fish gills, and smothering fish eggs and invertebrate organisms living in the river. The Multnomah Channel is migratory habitat for endangered species of aquatic life, including coho and Chinook salmon and steelhead, as well as other "sensitive" aquatic life such as Pacific lamprey and coastal cutthroat trout.

View enforcement notice at

Matthew Van Sickle, Public Information Officer, DEQ, 503-229-6044


Environment & Energy