Environmental protection order issued on same day study released concluding quake in Peace River region was likely caused by wastewater injected underground - the first study to link seismic activity in the area to industry
has been slapped with an environmental protection order for causing earthquakes with its oil sands operations in northwestern Alberta.
But late on Thursday, the provincial energy regulator issued an environmental protection order against Obsidian, saying the Calgary-based oil and gas producer had induced the events with its liquid disposal operations.that concluded the Nov. 29 quake was most likely caused by wastewater being injected underground by oil sands operators. It was the first study to link seismic activity in the area to industry.
The large Nov. 29 quake was part of a series of seismic events that began late that afternoon and lasted for around 24 hours. They were centred near Reno, Alta., a tiny rural hamlet about 40 kilometres southeast of Peace River. For the next few months, it kept an eye on the equipment and conducted research and analysis to determineThe next large quake hit on March 16, with a local magnitude of 5.1. The following day, the geological survey received new information from its seismic monitors and determined the earthquakes were related to Obsidian’s liquid disposal operation, including a well authorized for water disposal through injection into the ground.
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