GRI significant spills and environmental incidents Number of significant spills and environmental incidents 5 1 2 6 EM-MM-140a.2 Number of incidents of non-compliance associated with water quality permits, standards, and regulations Significant spills are those reported under categories 3 (moderate), 4 (major) and 5 (catastrophic) according to Glencore’s classification scheme (refer to the water section of the Glencore Sustainability Report 2020 for further information regarding the reported spills).