Seven Mile Landfill goes green – and greener

SEVEN MILE - Regional District of Mount Waddington hopes Phase 1 biocover will reduce methane gas emissions

  • Jun. 30, 2011 8:00 a.m.

– SEVEN MILE — The greening of Seven Mile Landfill is under way. And in more than one way. A large mound of contaminated soils recently deposited here has been placed over the completed Phase 1 section of landfill, and will be hydro-seeded to create a smooth, grassy slope over the North Island’s trash. The final biocover should also serve to mitigate methane gas emissions from the facility. “We have strong confidence the biocover will reduce the release of methane gas,” said Patrick Donaghy, operations manager for the Regional District of Mount Waddington. Donaghy said the high organic content of the soil, which is contaminated primarily with traces of metals, provides microorganisms that ingest methane and convert it to carbon dioxide. While both are greenhouse gases, methane is capable of trapping roughly 50 times more heat than an equivalent amount of CO2, according to the Intergovernmental Panel on Climate Change. The Regional District has tested the level of methane emissions from various spots in the landfill for baseline data, and will do follow-up tests at those locations in the future to determine the degree of methane mitigation, Donaghy said. Hazco delivered the soils from an industrial site in the Cowichan Valley to Seven Mile Landfill in March. The company paid RDMW to dump the soil under a contract that included providing the on-site soil placement and hydro-seeding currently under way. “We’re using one excavator, one bulldozer and three rock trucks,” Hazco manager Brian Fagan said. “The dozer and one truck are Hazco’s; the rest are local contractors.” The contaminated soils were combined with HOG fuel — composted waste wood — and biosolids from the wastewater treatment plant. Leftover material was used to fill and create a roadway around the landfill’s lower containment ponds. Hazco also removed 11 fish totes filled with various household hazardous waste, like paint, paint-thinner, oil, and many containers of unidentified liquids. The RDMW, in turn, used a portion of the extra income to pay Hazco to move other material on the site, including the HOG fuel pile. “We’re trying to make improvements to the landfill in a way that makes it more functional,” Donaghy said. “One one hand, we’re using some of these soils to buttress the less stable surfaces, which are basically sand hills. But it’s aesthetic as well as reinforcing the structure.”

Just Posted

Frost backs Town of Port McNeill’s temporary legal cannabis sales ban

“I spoke with all the councillors and was kept up to date with what was going on.”

Seal attacks kayakers in the Broughton Archipelago

“It has to be one chance in a million of this happening.”

BC Ferries delays launch of Northern Sea Wolf route

For the second time, BC Ferries delays direct service from Port Hardy to Bella Coola

Historic Hornsby Crawler housing at hand

Construction for Hornsby Crawler structure approved by RDMW

Port McNeill Kids in Motion granted swimming funds from the town

Kids in Motion were granted $300 from the town to help cover costs for using the pool this summer.

BC Games: Day 1 comes to an end

Medals have already been handed out following one day of competition in the 2018 BC Summer Games

BC Wildfire update on Okanagan blazes

Watch the media briefing on the current fire situation in the Okanagan.

ZONE 6: Rugby star Maggie Banks carries family legacy to BC Games

Shawnigan Lake student and Coquitlam native following her parents to the national program

RCMP help to save goats from wildfire

The fast-approaching wildfire, sparked Thursday, forced the evacuation of five homes

VIDEO: Near drowning captured on popular B.C. river

Search and Rescue manager says the popular pastime of floating in the summer is inherently dangerous

Tara’s Tee Box: How to stop slicing the golf ball

“The simplest way to correct A SLICE is to understand how to swing in balance from start to finish.”

Crosswalk vandalism leaves black mark for Cowichan as B.C. Games begin

Rainbow crosswalk defaced just days after being painted

Photo gallery: BC Games Day 1

A brief look at action from the 2018 BC Summer Games in the Cowichan Valley

UPDATED: Anti-pipeline campers digging in as eviction deadline expires

The City of Burnaby had ordered the Kinder Morgan pipeline protesters out for violating bylaws

Most Read