The U.S. Environmental Protection Agency (EPA), Environment and Climate Change Canada (ECCC), and Health Canada (HC) have released an educational primer on U.S. and Canadian regulations regarding chemical substances.  EPA states that the purpose of the primer is to compile easy-to-use information for stakeholders potentially regulated under similar U.S. and Canadian regulations -- Significant New Use Rules (SNUR) in the U.S. and Significant New Activity (SNAc) provisions in Canada.  EPA, ECCC, and HC previously collaborated in the implementation of a Regulatory Cooperation Council (RCC) Work Plan on Chemicals Management that focused on SNURs and SNAcs.  The primer states that an overarching issue identified during the roundtable discussions was the need for improved outreach and education, ranging from the basics of the SNUR/SNAc programs to specific requirements for various stakeholders, especially for potentially less-informed stakeholder groups, such as foreign suppliers, and small, niche companies in the U.S. and Canada.  According to EPA, information in the primer will assist the regulated community to determine how to comply and engage their supply chains to help facilitate compliance for meeting SNUR and SNAc requirements.  The primer notes that it does not substitute for any SNUR or SNAc provisions, nor is it a rule itself.  The primer does not impose legally binding requirements on the regulated community or on EPA, ECCC, or HC.