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.

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

The end of an Echo
The end of an Echo

Invermere Valley Echo shuts down operations in Columbia Valley

Creating a new narrative for Canal Flats

Economic development consultant hired, lists vision for next 90 days

Princeton wildfire phots courtesy of Debbie Lyon.
UPDATE: Crews battle as wildfires rage in B.C. Interior

Crews brace for another day on B.C. firelines as no let up is likely

VIDEO: B.C. wildfires by the numbers
VIDEO: B.C. wildfires by the numbers

Wildfires continue to engulf regions of B.C.’s forests and communities.

Aerial view south of Williams Lake Friday afternoon shows dry lightning storm passing over, leaving fire starts behind. Lightning sparked more than 100 new fires Friday. (Black Press)
VIDEO: More than 180 wildfires burning across B.C.

Firefighters from other provinces called in to assist

DTSS Grad March 2017
DTSS Grad March 2017

DTSS Grad March 2017

59 cats seized in Chase
59 cats seized in Chase

59 neglected and injured cats were seized from a property in Chase

(Flickr/Andreas Eldh)
Soundgarden singer Chris Cornell dead at age 52

The singer/songwriter passed away early Thursday morning in Detroit

Paying tribute to a primeval passage
Paying tribute to a primeval passage

Uninterrupted celebrates the Adams River sockeye run in an extraordinary way.

UPDATE: Pemberton Music Festival cancelled, no automatic refunds
UPDATE: Pemberton Music Festival cancelled, no automatic refunds

In the past, the music festival located in Pemberton drew large crowds last year of 180,000 fans

Photo by: WeissPaarz.com
Medical wait times cost B.C. patients $2,300 each

New Fraser Institute report places B.C. at second worst in costs associated with long wait times

UPDATE: 22 killed at Ariana Grande concert
UPDATE: 22 killed at Ariana Grande concert

Witnesses reported hearing two loud bangs coming from near the arena’s bars at about 10:35 p.m.

A university study finds that about nine per cent of Canada’s Grade 11 and 12 students – roughly 66,000 teens – have driven within an hour of drinking and 9.4 per cent drove after using marijuana.                                 Photo: Now-
Leader file
One in three Canadian high school students have rode with drinking drivers, study reveals

Nearly one in five rode with a driver who’d been smoking pot

Top court to hear federal government’s appeal on residential school records
Top court to hear federal government’s appeal on residential school records

A lower court judge ruled to destroy the stories after 15 years unless consent is given to preserve

Most Read