OROVILLE — Contaminants from a 6,000-gallon spill of coal slurry by the Coalmont Energy Mine near Princeton, B.C., on Aug. 24 did not reach the United States.
Water samples taken by the state Department of Ecology from the Similkameen River near Nighthawk found no effect from the spill.
The agency does not anticipate any effect in the future, Ecology spokeswoman Brook Beeler said in an email.
The agency regularly monitors the water quality of the river, and will continue to test the river to confirm the spill was contained.
The next monitoring is scheduled for Sept. 9, she said.
Ecology will remain in contact with the B.C. Ministry of the Environment which is overseeing cleanup of the spill.
The B.C. agency’s tests found the coal dust mixture traveled about 9 miles downstream before settling in the stream, Beeler said.