Ozone-Depleting Substances - HCFCs (Absolute Metric Tons CO 2 e) 2018 2019 2020 2021 2018 2019 2020 2021 Absolute Metric Tons 2,904 2,787 2,600 3,003 Particulate Matter 10 Micrometers or Less in Diameter (PM10) 390,892 284,444 228,937 212,740 QUANTITY RETIRED GHG OFFSET OFFSET TYPE REGISTRY PURPOSE OF RETIREMENT DETAILS OF CREDIT ORIGINATION 50 offsets 50 mt CO 2 e Verified Emissions Reductions (VERs) Gold Standard Impact Registry Retired in support of 2021 sales of net-zero products India: Delhi Metro rail efficiency project, related to the implementation of energy efficiency measures in selected stations of the Delhi Metro in India and promoting less GHG intensive transportation models for the region Retired Carbon Offsets Owens Corning optionally chooses to report our HCFC emissions within our Scope 1 for transparency. GHG Scope 1 and Scope 2 Intensity  Scope 1 and 2 (market-based) emissions  Aggregate Intensity Percentage Scope 1 and 2 (market-based) emissions 3,882,168 3,674,834 3,352,168 3,426,681 Aggregate Intensity (mt CO2e Normalized by Revenue - in Millions) 543.806 511.255 473.377 402.273 Aggregate Intensity Percentage 100 94 87 74 ABSOLUTE METRIC TONS AGGREGATE INTENSITY PERCENTAGE 20 40 60 80 100 4,000,000 2,500,000 2,000,000 1,500,000 1,000,000 500,000 2018 2019 2020 2021 3,500,000 3,000,000 ENVIRONMENTAL DATA EMISSIONS DATA Appendix C 2021 Owens Corning Sustainability Report | Appendices | 316