UBC mine engineering professor Dirk van Zyl (left) is appointed to review the Mt. Polley mine tailings dam failure by Energy and Mines Minister Bill Bennett

UBC mine engineering professor Dirk van Zyl (left) is appointed to review the Mt. Polley mine tailings dam failure by Energy and Mines Minister Bill Bennett

New rules in effect for mine tailings ponds

Permits will specify dam construction, water level, motion detection and independent review, Mines Minister Bill Bennett says

The latest changes to B.C. mine regulations bring the province closer to its goal of preventing another tailings pond failure, says an independent expert who investigated the 2014 dam breach at Mt. Polley Mine.

Dirk van Zyl, professor of mining and the environment at the University of B.C. and one of three outside reviewers of the Mt. Polley failure, said the changes to B.C.’s Mining Code meet the recommendations made by engineers who examined the failure.

“These changes put B.C. in a leadership position and clearly set the groundwork for a more comprehensive approach to consistent tailings management in the province,” van Zyl said in a statement Wednesday. “It is another step towards the overall goal of moving to zero tailings storage facility failures.”

Energy and Mines Minister Bill Bennett said the changes to construction, water management and inspection can’t be expected to prevent every small release of water from a mine tailings pond in heavy rainfall. But he is confident the new regime will prevent major failures, even when unknown factors such as the weak layer under the Mt. Polley dam exist.

“Now we are prescribing a factor of safety that I think will account for the things you don’t know,” Bennett said.

Al Hoffman, B.C.’s Chief Inspector of Mines, said the new code has specific requirements for inside “beaches” to reduce pressure on the base of a tailings dam, the height of water allowed, the number of motion detectors on the dam and the frequency of inspections.

The new code requires every existing B.C. mine with a tailings pond to have an independent tailings review board in place by the end of 2016, with annual reports to be posted online.

That falls short of a recent recommendation by B.C. Auditor General Carol Bellringer that mine oversight should be independent of the ministry that issues permits and promotes mining investment. Bennett said he remains convinced that the technical nature of permits with hundreds of conditions makes the people who issue them the best qualified to enforce them.

NDP energy and mines critic Norm Macdonald said Mt. Polley was required to have supporting beaches and went for years without them, and also reported its water levels incorrectly before the dam failure. New rules will only make a difference if they are enforced, Macdonald said.

The Mt. Polley independent report concluded that a a layer of glacial till material at the base of the dam near Williams Lake wasn’t understood in enough detail when the dam was designed and built in 1997. Later raising of the dam to hold more water and tailings put pressure on the base layer and led to the failure.

The B.C. Conservation Officer Service continues its investigation of the Mt. Polley incident, and has authority to recommend charges for the environmental damage done by the failure.

The Mt. Polley dam has been repaired by owner Imperial Metals and the mine reopened, with work continuing to rebuild Hazeltine Creek and the shore of Quesnel Lake where a torrent of water and tailings poured down on Aug. 4, 2014.

 

Just Posted

Port Alberni’s first movie theatre, started before 1920, was originally located on First Avenue, across from Alberni Hardware. This photo is one of 24,000 included in the Alberni Valley Museum’s online archives, available for public viewing at https://portalberni.pastperfectonline.com. (PHOTO PN09360 COURTESY ALBERNI VALLEY MUSEUM)
LOOK BACK: Port Alberni’s first movie theatre

The Port Theatre was destroyed by a fire in 1952

The North Island College campus in Port Alberni is located on Roger Street. (SUBMITTED PHOTO)
North Island College to offer digital and in-person classes this fall

In-person classes will be able to resume in September

B.C. Centre for Disease Control data showing new cases by local health area for the week of May 2-8. (BCCDC image)
Vancouver Island COVID-19 local case counts the lowest they’ve been all year

On some areas of Island, more than 60 per cent of adults have received a vaccine dose

A nurse gets a swab ready to perform a test on a patient at a drive-in COVID-19 clinic in Montreal, on Wednesday, October 21, 2020. THE CANADIAN PRESS/Paul Chiasson
Island’s daily COVID-19 case count drops below 10 for just the second time in 2021

Province reports 8 new COVID-19 cases on Vancouver Island Wednesday

Ancient Forest Alliance campaigner Andrea Inness walks beside an enormous western red cedar stump in a BCTS-issued cutblock in the Nahmint Valley. (PHOTO COURTESY TJ WATT)
B.C. forestry watchdog finds lack of compliance in Nahmint logging

Forest Practices Board says old growth and biodiversity near Port Alberni are at risk

Daily confirmed COVID-19 cases reported to B.C. public health, seven-day rolling average in white, to May 12, 2021. (B.C. Centre for Disease Control)
B.C. preparing ‘Restart 2.0’ from COVID-19 as June approaches

Daily infections fall below 500 Friday, down to 387 in hospital

A vial of AstraZeneca vaccine is seen at a mass COVID-19 vaccination clinic in Calgary, Alta., Thursday, April 22, 2021. Dr. Ben Chan remembers hearing the preliminary reports back in March of blood clots appearing in a handful of European recipients of the Oxford-AstraZeneca COVID-19 vaccine. THE CANADIAN PRESS/Jeff McIntosh
Science on COVID, VITT constantly changing: A look at how doctors keep up

While VITT can represent challenges as a novel disorder, blood clots themselves are not new

Poached trees that were taken recently on Vancouver Island in the Mount Prevost area near Cowichan, B.C. are shown on Sunday, May 10, 2021. Big trees, small trees, dead trees, softwoods and hardwoods have all become valuable targets of tree poachers in British Columbia as timber prices hit record levels. THE CANADIAN PRESS/Jen Osborne.
Tree poaching from public forests increasing in B.C. as lumber hits record prices

Prices for B.C. softwood lumber reached $1,600 for 1,000 board feet compared with about $300 a year ago

The warm weather means time for a camping trip, or at least an excursion into nature. How much do you know about camps and camping-related facts? (John Arendt - Summerland Review)
QUIZ: Are you ready to go camping?

How many camp and camping-related questions can you answer?

On Friday, May 14 at Meadow Gardens Golf Club in Pitt Meadows, Michael Caan joined a very elite club of golfers who have shot under 60 (Instagram)
Crowds at English Bay were blasted with a large beam of light from an RCMP Air-1 helicopter on Friday, May 14. THE CANADIAN PRESS/Marc Grandmaison
Police enlist RCMP helicopter to disperse thousands crowded on Vancouver beach

On Friday night, police were witness to ‘several thousand people staying well into the evening’

Sinikka Gay Elliott was reported missing on Salt Spring Island on Wednesday, May 12. (Courtesty Salt Spring RCMP)
Body of UBC professor found on Salt Spring Island, no foul play suspected

Sinikka Elliott taught sociology at the university

The first Black judge named to the BC Supreme Court, Selwyn Romilly, was handcuffed at 9:15 a.m. May 14 while walking along the seawall. (YouTube/Screen grab)
Police apologize after wrongly arresting B.C.’s first Black Supreme Court Justice

At 81 years old, the retired judge was handcuffed in public while out for a walk Friday morning

Cannabis bought in British Columbia (Ashley Wadhwani/Black Press Media)
Is it time to start thinking about greener ways to package cannabis?

Packaging suppliers are still figuring eco-friendly and affordable packaging options that fit the mandates of Cannabis Regulations

Most Read