Cheakamus River derailment

[3] Transport Canada limited horsepower and tonnage after the accident and CN faced federal and provincial charges.

[3] Sodium hydroxide (NaOH) has the potential to be a dangerous chemical in aquatic environments due to it raising the pH level of the water.

At low concentrations, NaOH will be neutralized by other chemicals in the water, such as acids and dissolved carbon dioxide (CO2).

Also, NaOH does not bioaccumulate in the aquatic organisms as it is dissolved in the water and has a negative octanol-water partition coefficient.

[9] Extremely high pH levels will harm fish, specifically juveniles, by removing their slimy coats and drying out their skin, eyes and gills.