More than ten years have passed since Canada’s worst environmental disaster. In August 2014, a mining company’s tailings dam failed, spilling toxic sludge into Polley Lake, Hazeltine Creek and Quesnel Lake, Experts commissioned by the BC government said the 40-metre dam was poorly designed. Unstable ground underneath the dam caused it to shift and shear, a result BC Hydro hopes will not occur at its precarious Site C.,,