UBC mine engineering professor Dirk Van Zyl (left) is introduced by Energy and Mines Minister Bill Bennett as one of three independent experts to investigate the cause of the Mount Polley tailings dam failure. Their report is due by Jan. 31.

Mount Polley spill may be left in place

Further tests will determine whether the metal-bearing sand will be removed or left where it is, Mines Minister Bill Bennett says

Further tests of mine tailings spilled down a creek bed from the Mount Polley mine will determine whether the metal-bearing sand will be removed or left where it is, Energy and Mines Minister Bill Bennett said this week.

The first lab tests on sediment samples at the mouth of Hazeltine Creek showed that while the material that poured down to the creek mouth in Quesnel Lake isn’t a health hazard to humans, its iron and copper content are above federal and provincial standards for aquatic life.

Bennett said it’s encouraging that the first sediment results did not show presence of arsenic, mercury or cadmium, toxic elements found in mine rock or used in mine processing.

A comparison sample of compact sediment from the mouth of nearby Raft Creek, not affected by the Aug. 4 tailings pond breach, also tested above sediment quality guidelines for iron. The environment ministry says mineral deposits that attract mine development often have naturally occurring metal concentrations much higher than other areas.

“What we need to do is test those sediments to determine whether it’s better environmentally to leave them there or to try to collect them and get them out of the creek bed and get them out of the creek mouth in Quesnel Lake,” Bennett said. “Before you start dredging lake bottoms and trying to clean up the bottom of a creek bed to get the sand out, you’ve got to determine what the risk is first, and that’s the phase that we’re in right now.”

There are two priority jobs underway on the spill site. One is pumping down the level of Polley Lake, the smaller lake next to the mine site that received a surge of water and tailings that plugged the outlet with an elevated water level. The other is reconstructing the breached section of the dam to prevent rain from carrying more tailings from the pond.

Interior Health is reviewing water and sediment sample results and a long-term monitoring and remediation plan has been submitted by the mine operator, a division of Imperial Metals.

 

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Comments are closed

Just Posted

Coalmont woman airlifted after ATV crash

Off-road vehicle swerved to miss oncoming traffic

Summerland campground to provide COVID-safe accommodations for temporary farm-workers

The managed seasonal worker campsite will be located within a separated area of Peach Orchard Municipal Campground

QUIZ: A celebration of dogs

These are the dog days of summer. How much do you know about dogs?

Princeton high school drops ‘Rebels’ sports team name, citing links with U.S. Civil War

Name and formerly-used images “fly in the face” of the district’s human rights policy, says board chair

Bench plaque recognizes former Summerland firefighter

Volunteers with fire department set up plaque in honour of Richard Estabrooks

B.C. accommodators need phone lines to light up as in-province travel given green light

Travel restrictions during the COVID-19 pandemic have decimated the tourism and hospitality industries

Milestone RCMP Cops For Kids fundraiser ride going virtual

You can join and help RCMP raise funds for families and possibly win 20th anniversary cycling shirt

300 Cache Creek residents on evacuation alert due to flood risk as river rises

Heavy rainfall on Canada Day has river rising steadily, threatening 175 properties

No abandoned Seadoo found on Coldstream lake

Vernon Search and Rescue crews and RCMP unable to find reported abandoned Seadoo on Kal Lake

Kelowna high school football star, water skier, signs with University of Calgary

Isaac Athans, and his family, have a long history of success across various sports in the Okanagan, nationally

First glimpse of Canada’s true COVID-19 infection rate expected mid-July

At least 105,000 Canadians have tested positive for COVID-19 since the coronavirus was identified

Police ramp up efforts to get impaired drivers off B.C. roads this summer

July is dedicated to the Summer CounterAttack Impaired Driving Campaign

Migrant workers stage multi-city action for full status amid COVID-19 risks

‘COVID-19 has exacerbated an existing crisis’

Shuswap resident spots waterspout near Salmon Arm

The rare weather event was spotted early in the morning on July 4.

Most Read