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Only two oil sands projects meet new ERCB tailings rules

12/14/2009
By Guntis Moritis
Only two tailings management plans for oil sands mining operations comply with the new Alberta Energy Resources Conservation Board (ERCB) Directive 074, according to a Pembina Institute & Water Matters Society of Alberta review.The oil sands extraction process creates tailings, which are a fluid mixture of water, sand, silt clay, unrecovered hydrocarbons, and dissolved chemicals. The review noted tailings are toxic and cannot be released into the environment. The sand and other coarse solids in tailings settle, but fine solids remain suspended in the water and require long-term containment.The review said the number of liquid tailings lakes continues to increase in Alberta and in 2009...
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