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A Stanford study has confirmed the results of a Tyee investigation that identified a bitumen wastewater disposal well most likely triggered recent record earthquakes in Peace River country that rattled homes and shook Albertans as far away as Edmonton.
After saying Peace River temblors were natural, AER blames Obsidian Energy, raising big questions.
The regulator is silent on possible links, but study finds an obvious connection.
And since the advent of high pressure hydraulic fracturing nearly 15 years ago, the technique has been tied to seismic clusters and events — some with magnitudes over 4.0 — in the Peace Region, southern Alberta, Red Deer and Fox Creek, Alberta.
Tuesday’s 5.8 tremor occurred in an area where wastewater is injected underground, building pressure over time.