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the various safety alarms. Additionally, they reported that the track had no contributing factors to the accident. It was revealed that the train was going uphill when nine cars fell from a bridge into the
Cheakamus River. Transport Canada limited horsepower and tonnage after the accident and CN faced federal and provincial charges. In 2006, it was estimated that it would take approximately a decade for the river to completely recover from the derailment. Attempts at restoration began by trying to introduce 20,000 juvenile
17:
130:(LC50) concentrations for aquatic organisms for NaOH range between 33 and 189 mg/L. The pH concentration can be defined as the concentration of free hydrogen ions in the water. Extremely high pH levels will harm fish, specifically juveniles, by removing their slimy coats and drying out their skin, eyes and gills. Consequently, raising the pH of an aquatic environment can directly increase the toxicity of other chemicals, such as
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to 80 cars, as a result of the derailment; the train involved had 144 cars. In 2007, an investigation report from the
Transportation Safety Board of Canada revealed safety issues regarding operation of the train, such as not having the safest technology and improper training of the crew's response to
171:
concentrations are over 100 times higher than below pH of 9. Ultimately, high pH concentrations can lead to death of organisms in aquatic environments and directly reduce biodiversity in these environments. If not caused by man-made industries or accidents, high pH surges can occur naturally and may
88:
that would have been hatchery raised from 40 wild adult steelhead salmon. In 2010, CN Rail pleaded guilty to one federal charge under the
Federal Fisheries Act and had to pay $ 350,000 towards conservation efforts and an additional $ 400,000 as a penalty for pleading guilty to the charge.
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68:, both freshwater and ocean-dwelling. Juvenile rainbow trout were the most affected at a mortality rate of 90% and it was also estimated that the adult chinook salmon mortality rate reached 50%.
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level of the water. At low concentrations, NaOH will be neutralized by other chemicals in the water, such as acids and dissolved carbon dioxide (
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be observed when algal blooms occur, otherwise they are virtually impossible to observe without directly measuring the pH of the water.
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75:, ordered Canadian National to limit the number of cars of its conventional trains travelling in the area of the derailment between
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122:). Also, NaOH does not bioaccumulate in the aquatic organisms as it is dissolved in the water and has a negative
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52:(sodium hydroxide), which entered the river, killing more than 500,000 fish from 10 different species, including
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Government of
British Columbia Environmental Emergency Management Program report of the incident
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246:"Railway Investigation Report R05V0141 - Transportation Safety Board of Canada"
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274:"Five years after disastrous B.C. spill, the Cheakamus River teems with life"
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366:"Province of British Columbia: B.C. Government Releases Compliance Summary"
299:"CN Rail faces five charges in 2005 toxic spill in B.C.'s Cheakamus River"
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Government of Canada, Transportation Safety Board of Canada (2007-05-30).
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Database of related media links from the
Pacific Streamkeepers Federation
333:"Hatchery steelhead bound for B.C. river polluted by toxic CN Rail spill"
164:), and it is dangerous to aquatic life. When pH levels increase above 9,
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Map and location of the
Cheakamus River, shown in the orange line
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218:"The Pacific Streamkeepers Federation - Cheakamus River Spill"
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occurred on August 5, 2005, when nine cars that were from a
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Accidents and incidents involving
Canadian National Railway
399:"Global Product Strategy (GPS) Safety Summary Caustic Soda"
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Aerial view of
Cheakamus River and its canyon in 2009
48:. The cars contained approximately 40,000 litres of
71:On November 5, 2005, federal transport minister,
104:Sodium hydroxide effects in aquatic environments
141:). This is because at basic pH concentrations,
469:"Effects of acids and alkalis on aquatic life"
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92:The derailment cost CN at least $ 7 million.
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424:"SIDS Initial Assessment Report For SIAM 14"
40:freight train derailed and crashed into the
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623:Nagpur level crossing disaster, India
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297:Sutherland, Scott (August 3, 2007).
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445:"pH Scale | U.S. Geological Survey"
124:octanol-water partition coefficient
686:Cheakamus River derailment, Canada
272:Pollon, Christopher (2010-08-20).
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766:Environmental disasters in Canada
331:Meissner, Dirk (April 26, 2006).
198:List of rail accidents in Canada
182:
713:Valigonda train disaster, India
568:Railway accidents and incidents
1:
771:Disasters in British Columbia
722:Kindu rail accident, DR Congo
605:Crevalcore train crash, Italy
806:August 2005 events in Canada
677:Jaunpur train bombing, India
596:Graniteville train crash, US
148:becomes more prevalent than
668:Ghotki rail crash, Pakistan
650:Amagasaki derailment, Japan
641:Vadodara train crash, India
632:Phu Loc derailment, Vietnam
822:
497:US EPA, ORD (2015-11-04).
34:Cheakamus River derailment
786:Railway accidents in 2005
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731:Świnna rail crash, Poland
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38:Canadian National Railway
776:2005 in British Columbia
614:Glendale train crash, US
781:2005 in the environment
747:2006 ►
743:◄ 2004
704:Bari derailmenti, Italy
659:Polgahawela, Sri Lanka
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791:Derailments in Canada
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27:
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801:Sea-to-Sky Corridor
99:The Cheakamus River
404:. October 18, 2013
372:. April 19, 2010.
337:The Canadian Press
303:The Canadian Press
278:The Globe and Mail
128:median lethal dose
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695:Datia, India
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370:M2 PressWire
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50:caustic soda
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503:www.epa.gov
429:December 5,
408:December 5,
383:December 4,
350:December 4,
316:December 4,
222:www.pskf.ca
62:pink salmon
58:coho salmon
760:Categories
508:2022-12-06
478:2022-12-06
454:2022-12-06
283:2022-12-04
255:2022-12-04
227:2022-12-05
204:References
378:444705438
345:359916177
311:360038737
250:tsb.gc.ca
374:ProQuest
341:ProQuest
307:ProQuest
176:See also
150:ammonium
77:Squamish
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132:ammonia
81:Clinton
727:Dec 19
718:Nov 29
709:Oct 29
700:Oct 24
691:Oct 3
682:Aug 5
673:Jul 28
664:Jul 13
655:Apr 27
646:Apr 25
637:Apr 21
628:Mar 12
619:Feb 3
610:Jan 26
601:Jan 7
592:Jan 6
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126:. The
64:, and
402:(PDF)
576:2005
572:2005
499:"pH"
431:2022
410:2022
385:2022
352:2022
318:2022
79:and
32:The
570:in
44:in
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264:^
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166:NH
154:NH
143:NH
136:NH
117:CO
113:pH
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
