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.

 

Just Posted

Port Hardy Mayor Dennis Dugas votes in favour of eliminating overtime pay for confidential secretary

“I think when staff makes a recommendation I have to support staff’s recommendation.”

PHOTOS: Port McNeill residents remember the fallen

A huge crowd of Port McNeill residents came out on Nov. 11… Continue reading

New Coast Guard radar boosts marine traffic monitoring off B.C. coast

Six radar installations set up for Georgia Strait to Queen Charlotte Strait to Prince Rupert

Port Alice resident a descendant of two Aboriginal war heroes

Charlie and Henry Byce are Canada’s most decorated father and son in history.

Port Hardy council hesitant to formalize question period in agendas, refers it to committee

In first act as new council, representatives were uncertain about formalizing question periods.

Trudeau offers to help Pacific islands face climate change impact

Prime Minister Justin Trudeau met with the leaders from the Pacific island nations on Saturday during the APEC Summit in Papua New Guinea

Price makes 36 saves as Habs edge Canucks 3-2

Late goal lifts Montreal past Vancouver

BC Minister of Agriculture loses stepson to accidental overdose

Lana Popham announces death of her 23-year-old stepson, Dan Sealey

Canadian military’s template for perfect recruits outdated: Vance

Gen. Jonathan Vance, the chief of defence staff says that the military has to change because the very nature of warfare is changing, particularly when it comes to cyber-warfare

‘Toxic’ chosen as the Word of the Year by Oxford Dictionaries

Other top contenders for 2018 include ‘gaslighting’ and ‘techlash’

RCMP bust illegal B.C. cannabis lab

Marijuana may be legal but altering it using chemicals violates the Cannabis Act

Canada defeats Germany 29-10 in repechage, moves step closer to Rugby World Cup

Hong Kong needs a bonus-point win over Canada — scoring four or more tries — while denying the Canadians a bonus point

Avalanche Canada in desperate need of funding

The organization provides avalanche forecasting for an area larger than the United Kingdom

5 B.C. cities break temperature records

Parts of B.C. remain warm, at 10 C, while others feeling chilly

Most Read