Scientist’s comments not supported by research

Why isn’t research on suspended sediment being recognized by Lynn Anglin and Imperial Metals?

Editor:

With regards to the Williams Lake Tribune article submitted by Lynn Anglin of Imperial Metals dated May 10 titled “Progress Made on Remediation at Mount Polley.”

I find that her comment “The tailings in Quesnel Lake, which is a very deep lake, are sitting at depths of greater than 100 metres and there is no evidence that they are re-suspending” is not supported by other research undertaken on Quesnel Lake as a result of the disaster that occurred in 2014.

The UNBC research by Dr. Ellen Petticrew and Dr. Phil Owens and other researchers from various universities finds that the resuspension of the tailings may be occurring.

In a related communication that I recently received from the UNBC research team the following was stated:

“Results of post-spill water column monitoring indicate elevated turbidities in the bottom waters of the West Basin in the fall and winter, when the lake circulation is most active.

This was observed in fall 2015, 2016, and 2017 with decreasing intensity each year.

Suspended sediment delivered to the Quesnel River from the lake exhibits copper levels exceeding both local background sediment concentrations (60-100 mg/kg) and the probable effects level for aquatic organisms (197 mg/kg) in mid-October 2014 through to late-May 2015, again from November 2015 through to mid-May 2016 and in January of 2017.

The timing of these high river sediment copper concentrations corresponds with the elevated turbidity in the West Basin.

These observations suggest the copper-elevated suspended sediment in the Quesnel River is coming from the bottom waters of the West Basin.

The original source of these sediments could be natural or mine-related material, or a combination of both. Research is continuing to determine the source of this sediment.”

Further to this I understand that Lynn Anglin and other Imperial Metals staff have been present for presentations by UNBC and other universities that discuss the summary of West Basin Turbidity and Quesnel River Suspended Sediment Copper Concentrations provided above by UNBC.

I and many of your readers would be pleased to know why this research on suspended sediment is not being recognized by Lynn Anglin and Imperial Metals in her May 10 article.

Richard Holmes

Likely, BC

Just Posted

Race For Kids on for teams of two Saturday, June 1

Registration is open for the fifth annual Race For Kids Fundraiser

PHOTOS: Legion hosts May’s biannual fashion show

Held in the Spring and the Fall every year, this show is a night of fashion and bonding

Bike to work and school week, May 27 to June 2

With vehicle emissions responsible for 30 per cent of pollutants in Williams Lake’s air quality, the week offers residents the opportunity to make a difference

Brothers tell a rip-roaring tale of familial love in the 1800s

The third book by local writer Stan A. Cowie is a sequel to The Boy, The Man

Williams Lake Farmers Market seeks permission to include licensed liquor vendors

The board has been approaced by a winery from Prince George

VIDEO: Protesters in Penticton gather to rally against sleeping-on-sidewalk bylaw

The proposed bylaw would outlaw sitting or lying on the city’s downtown sidewalks

Kamloops girl, 9, recovering from carbon monoxide poisoning now out of ICU

Her mother who was sleeping in the same tent with her did not survive

‘I think he’s still alive’: B.C. mom pleads for help finding son last seen a month ago

Family offering $5,000 reward for information leading to the safe return of Tim Delahaye

New poll suggests one-third don’t want politicians to wear religious symbols

Local politicians shouldn’t be allowed to wear hijabs, crucifixes or turbans on the job, survey suggests

Raptors fans far from home adjust plans to watch pivotal playoff game

Raptors currently lead the playoff series 3-2, and a win Saturday would vault them into NBA finals

PHOTOS: First responders in Fernie rescue baby owl who fell from nest

The baby owl’s inability to fly back to its nest prompted a rescue by first responders

Five takeaways from the Court of Appeal ruling on B.C.’s pipeline law

It’s unclear how many tools are left in B.C.’s toolbox to fight the project

Scheer says it would take Conservatives five years to balance budget

Scheeraccused the Liberal government of spending $79.5 billion of previously unbudgeted funds

B.C. man, 30, arrested for driving his parents’ cars while impaired twice in one day

The Vancouver-area man was arrested after officers caught him driving impaired twice in one day

Most Read