RICHLAND — Up to 300 gallons of oil may have leaked into the Snake River from a power-generating turbine at Lower Monumental Dam.
The Tri-City Herald reports the Army Corps of Engineers reported the suspected spill this week, but it’s unclear when it happened.
The Army Corps disclosed the incident to regulators and the environmental group Columbia Riverkeeper under the terms of a 2014 settlement agreement.
Columbia Riverkeeper had sued to stop oil releases from the eight dams on the lower Snake and Columbia rivers.