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CEPA's List of Toxic Substances
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In December 2009, Environment Canada and Health Canada released Substance Profiles for Quartz and Cristobalite (two polymorphs of crystalline silica) in connection with the consideration of whether to recommend the addition of quartz and cristobalite to the List of Toxic Substances in Schedule 1 of the Canadian Environmental Protection Act, 1999 (CEPA). In January 2011, public comments on the two Substance Profiles were invited. NISA submitted comments to the record and engaged with the Canadian Ministers of Environment and Health. Following the review of the public comments, Environment Canada and Health Canada released a Draft Screening Assessment for the Challenge: Quartz and Cristobalite. But it wasn't until 2013 that the final assessment was reached and the Government of Canada announced that quartz and cristobalite were determined not to be toxic under the CEPA. The hard work and engagement of NISA and other industry groups helped guide the Government of Canada towards the decision not to add quartz and cristobalite to the List of Toxic Substances. 

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