Spill numbers don’t add up

Terrace letter writer questions numbers derived from government analysis of Mount Polley spill

Dear Sir:

You’ve been quoted as saying the Aug. 4 collapse of the Mount Polley tailings pond released 10 million cubic metres of water and 4.5 million cubic metres of finely ground up rock and that it is “not an environmental disaster”.

Having read that the tailings pond area is about 16 square kilometres, and knowing that one million cubic meters covers an area of one square kilometre, one metre high, it appears that the numbers are incorrect by a factor of at least 10 to 25 +. At 16 square kilometres and 25 metres deep, the release would have been about 400 million cubic metres of water and silt. If there would be 1 millimetre of precipitation of rain, that would be a sprinkle, 10 mm would be a rain fall, 25 + mm would be a downpour and maybe some local flooding.

One centimetre of snow in the lower main land would result in wet roads, 10 cm would bring out some sand trucks and snowplows, 25 + cm would result in all the trucks out and maybe road closures.

Could you please advise who supplied those numbers, the ministry or was it Imperial Metals, owner of the mine. If it was Imperial Metals, I wonder how accurate the numbers were about the discharge into the tailings pond.

Martin Holzhauer,

Terrace, B.C.


Just Posted

Terrace SAR aims high for new headquarters

A huge financial grant will enable Terrace Search and Rescue to move… Continue reading

New Terrace squash court opens at Summit Square Apartments

For the first time in years, squash players will be able to play on weekends in Terrace

UPDATE: Tsunami warning cancelled for coastal British Columbia

Warning issued following 7.9 earthquake off Kodiak, AK

Police encourage reporting of suspicious events following reports involving children

Terrace RCMP are asking the public to report any suspicious adult interactions… Continue reading

Soup kitchen sees “groundswell of community support”

Donations toward looming tax bill push non-profit back in the black

Tsunami warnings 101: Canada

Here are some things to know about tsunami alerts in Canada and how they work

Andrew Scheer on trade, Trump and Trudeau

Canada’s Conservative leader begins three-day visit to B.C.

Victims restrained, sex toys and cash stolen from B.C. adult store

Armed suspects sought in adult store robbery

Vancouver Islanders ponder need for tsunami siren song

Alarm sounds in Port Alberni but not at the DND base in Esquimalt

Babcock, Goyette and Smyth honoured at Order of Hockey in Canada

Mike Babcock, from Saskatoon, guided the Detroit Red Wings to a Stanley Cup in 2008

Bell Canada alert prompts RCMP, privacy watchdog to probe data breach

Company spokesman: ‘Fewer than 100,000 customers were affected’

‘The tsunami alarm failed my household’: North Coast residents concerned over sirens, alerts

People living in northern communities share how they learned about Tuesday’s tsunami warning

Snowboarder dies at Vancouver Island ski resort

Death at Mount Washington Alpine Resort

Man faces 48 charges in string of random Toronto shootings

The string of unprovoked shootings began Jan.9, say police

Most Read