The Vancouver Landfill in Delta is where loads of bottom ash from Metro Vancouver's waste-to-energy plant end up. Tests show some loads have high levels of cadmium.

Metro incinerator ash fails tests on new front

Bottom ash landfilled in Delta found to be high in cadmium

Some samples of bottom ash from Metro Vancouver’s garbage incinerator are testing positive for high concentrations of cadmium – sometimes at twice the allowable levels for conventional landfilling in Delta.

A Metro Vancouver staff report shows that so far this year bottom ash loads have failed 19 times out of 479 tests, with eight tests coming back at more than twice the limit.

The test failures are different from the high cadmium levels detected a year ago in some fly ash – taken from scrubbers in the waste-to-energy plant’s stack – that operator Covanta Energy failed to report until those loads were already dumped at the Cache Creek regional landfill.

The bottom ash instead goes to the Vancouver Landfill at Burns Bog in Delta.

Trouble with incoming loads there was first flagged in 2007, when some bottom ash exceeded allowed levels of lead, but Metro’s report says subsequent testing determined it wasn’t hazardous to workers and steps were taken to ensure compliance with the landfill’s operating certificate.

Metro was advised starting in April of this year that some bottom ash was exceeding leachable cadmium levels.

At the request of the B.C. environment ministry, Metro has filed a management plan to address questions about bottom ash.

Meanwhile, bottom ash loads from two weeks in July and one week in August that tested at more than twice the regulatory limit are being stockpiled at the Vancouver Landfill pending further decisions.

Ash that fails the test but is below twice the limit is being landfilled after further tests confirm it’s not hazardous, according to Metro.

Up until April, the ash was being used in road construction and as cover at the landfill.

According to Metro, sources of cadmium in the waste stream are thought to have increased in recent years.

Household batteries are the main source, particularly rechargeables, including electronic device batteries. A much smaller fraction likely comes from plastics.

Metro officials say they intend to further study cadmium sources in the waste stream and to work with Covanta to ensure the treatment of bottom ash to neutralize metals ahead of landfilling is effective.

The region will also push for increased recycling of batteries through product stewardship programs.

The question of what happens to suspect loads of fly ash at the Cache Creek landfill is still unresolved.

Cache Creek Mayor John Ranta said consultants have been hired to try to determine whether it must be landfilled elsewhere instead.

He hopes to learn if the plant’s process for binding bottom ash is effective indefinitely or if it degrades over tiime.

Findings are expected in mid-October.

Fly ash from the incinerator has been trucked to a landfill near Hinton, Alberta instead of Cache Creek, at a cost of about $500,000 more per year, since the test failures came to light.

Just Posted

Sanjay Gulati is leaving the Mission Community Services Society

Executive director taking a new position in Ireland

Fraser Health reminds parents to get their kids fully vaccinated against measles

Health authority will send letters home to parents with catch-up program information

Mission RCMP reminds public to lock car doors

April is Auto Crime Enforcement Month

PHOTOS: Thousands attend Mission Elks Easter Egg Hunt

The quest for candy and chocolate brought out a huge crowd of kids and parents to the family event

Gas prices in Metro Vancouver hit $1.72 a litre

And one analyst expects it to only go higher this week

What’s age got to do with it? B.C. couple with 45-year gap talks happy marriage

An Armstrong couple that has 45-year age gap began turning heads after being featured on show Extreme Love.

Loud jets from Abbotsford are annoying residents of tiny U.S. town

Flights out of Abbotsford airport turn over border town and annoy residents, Sumas mayor says

Olympic auditions return to Lower Mainland

Event an opportunity for unknown athletes to shine and, maybe, change sports

B.C. men challenge constitutionality of Canada’s secret no-fly list

Parvkar Singh Dulai says he received a “denial of boarding” notification under the no-fly program last May 17

Murder on B.C. property didn’t need to be disclosed before sale, court rules

Buyer had tried to break contract after learning a man with ties to crime had been murdered there

B.C. pedophile wins appeal after violating court order

Kelly Glen Isbister’s sentence was cut by the BC Court of Appeal

VIDEO: Spiderman-clad Lamborghini makes pit stop in Abbotsford ahead of Avengers premiere

Highstreet Shopping Centre displaying unique car during Friday’s opening of Marvel movie

B.C.’s largest Vaisakhi festival target of threatening Facebook post: Surrey RCMP

Police say they are investigating the posts on Facebook, after local MLA forwarded screenshots

Pug life: B.C. town boasts waggish list of dog names

Freedom-of-information request lists most ‘pupular’ dog names registered in White Rock

Most Read