Halifax Member of Parliament Andy Fillmore was on campus last week on behalf of the Honourable Jim Carr, Canada鈥檚 Minister of Natural Resources, to announce new funding for research on assessing methane emissions from old fossil fuel extraction sites in two Maritime provinces.
Called legacy sites, these mostly abandoned areas 鈥� like coal mines, for example 鈥� could be targeted for future remediation, helping the provincial and federal governments develop effective methane management policy and regulations in the fight against climate change.
鈥淐anadian universities are home to some of the best minds in the clean energy sector and they're keen to support our country's transition to a low-carbon future,鈥� said Fillmore. 鈥淏y investing in the work of these leading researchers, our government is taking meaningful climate action to ensure the accurate and effective measurement of methane emissions in our region.鈥�
Addressing greenhouse gases
A staggering number of abandoned mine openings have been documented in Nova Scotia alone 鈥� records go back as far as the end of the 18th century. It鈥檚 possible that many of the 1,922 coal mines on record could be releasing methane, a potent greenhouse gas more effective at trapping heat in the atmosphere than carbon dioxide or water vapour. While regulations for shutting down a modern extraction site are in place now, many of these historic sites were built or abandoned generations before current policy existed.
After the Paris climate agreement countries around the world committed to reducing greenhouse gas emissions. If stagnant, out-of-operation fossil fuel extraction sites are contributing to the problem it鈥檚 important to understand how and to what extent. With limited scientific evidence of how much methane could be seeping into the atmosphere from these legacy sites, there鈥檚 no real starting point for potential remediation planning.
鈥淒ifferent types of coal have different levels of methane emissions, and there鈥檚 currently no record of methane emissions from different mining sites in Nova Scotia and New Brunswick,鈥� explains Grant Wach, geology professor with the Department of Earth Sciences. 鈥淥ur research aims to build an inventory of methane emission estimates from mines as well as other oil and gas extraction sites in both provinces.鈥�
Grant Wach speaks at the announcement event. (Danny Abriel photo)
With $482,000 in funding from Natural Resources Canada鈥檚 Energy Innovation Program, Dr. Wach鈥檚 Basin & Reservoir Lab is joining forces with researchers at St. Francis Xavier University (St. FX), University of New Brunswick (UNB), University of Waterloo and industry partners like Eosense to tackle the Gas Seepage Project (GaSP) 鈥� the first of its kind in Canada. It鈥檚 phase one of a methane mitigation initiative in the Maritimes focused on legacy sites.聽聽聽 聽
Identifying 鈥渓egacy sites鈥�
During the Carboniferous Period over 300 million years ago, the climate was far warmer, with greater amounts of carbon dioxide in the atmosphere. The warmer climate and atmosphere allowed vegetation and forests to thrive. The Maritime provinces as we know them today were also located much closer to the equator at the time. As plant life died and decomposed in the ancient Maritimes, geological processes of high heat and pressure turned the plant material to coal over hundreds of thousands of years.
Fast forward to the Industrial Revolution, when the sudden demand for coal led to the development of mines in Nova Scotia and New Brunswick during the 18th and 19th centuries.
When new technology and fuels were developed, coal mines in the Maritimes largely became a way of the past and many were shut down. Methane is naturally occurring in coal, meaning any legacy sites that stopped operating before environmental safeguards were put in place could be releasing the gas.
Dr. Wach鈥檚 team at 黑料吃瓜网and experts at UNB will comb through historical provincial records, maps and satellite images to capture as much information about the locations of these legacy sites as possible. They鈥檒l examine associated geological features underground, which are important for considering how to mitigate methane emissions in any future remediation plans.
鈥淭his project is unique,鈥� said Fiona Henderson, research assistant on the project and recent 黑料吃瓜网graduate. 鈥淚t has an all-encompassing, holistic approach to the problem [of methane emissions].鈥�
A cross-university, cross-sector collaboration
Data on the legacy sites鈥� locations and geology will then be handed over to teams at St. FX and UNB, who will conduct field work with locally-developed sensing technology from industry partners like Eosense to detect and measure methane emissions associated with sites. Similar projects are in progress in the United States and Europe.
Eosense representatives explain sensing technology to MP Andy Fillmore, joined by Grant Wach of 黑料吃瓜网 and Dave Risk of St. FX.
鈥淏eing part of such a diverse, methodological study is very exciting for us,鈥� said Colleen Gosse, a research and development engineer with Eosense and master鈥檚 student in engineering at 黑料吃瓜网who attended the event to demonstrate how the technology used in this research works.
鈥淭he range of fields being brought to bear on this one project is just fantastic,鈥� said Chance Creelman, vice president of research and development at Eosense, who joined Gosse at the announcement.
With Canada鈥檚 first-ever provincial-scale methane emissions estimate inventory in hand, the research team will also have a detailed approach to the technologies and methods required to complete such a project.
鈥淭hrough GaSP, Dalhousie鈥檚 excellence in earth sciences research is united with the strengths of other Canadian universities and industry partners,鈥� said Ian Hill, associate vice-president, research at Dalhousie.
鈥淭ogether, and with this federal support, we鈥檙e building the scientific knowledge required to better understand how the fossil fuel extraction sites of our past are still affecting our atmosphere today. This research will also lay the groundwork for similar methane emission assessments in other areas of Canada and the world.鈥�