1973: Energy Resources Conservation Board (ERCB) publishes a noise control Interim Directive (ID 73-1) for the energy industry. As the energy industry and the population of Alberta steadily grew, the impact of encroachment by or towards energy industry facilities presented unique challenges. Noise was becoming one of the main concerns identified by the public and it was clear that the simplistic approach taken by the early noise control directives would not suffice.
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