2021 Owens Corning Sustainability Report | Reducing Our Environmental Footprint | Waste Management | 187 Excellence in Waste Diversion Owens Corning recognizes the commitment that our facilities around the world have made to manage waste, and we honor those plants who achieve greater than 80% landfill diversion. We use an internal rating system focused on diversion from landfill compared to total waste generated. In 2021, 36 plants achieved greater than 80% landfill diversion. PLATINUM LEVEL 100% WASTE DIVERSION GOLD LEVEL >98% WASTE DIVERSION SILVER LEVEL >80% WASTE DIVERSION ■ Asan, South Korea ■ Changzhou, China ■ Gresham, Oregon, U.S. ■ Guangde, China ■ Parainen Science & Technology, Finland ■ Ridgeview, South Carolina, U.S. ■ Sayli, India ■ Springfield, Tennessee, U.S. ■ Vilnius, Lithuania ■ Dapada, India ■ Qingdao Novia, China ■ Tessenderlo, Belgium ■ Trzemeszno, Poland ■ Valleyfield, Canada ■ Yantai, China ■ Yuhang Glass Wool, China ■ Chambéry, France ■ Edmonton, Canada ■ Guangzhou, China ■ Hällekis, Sweden ■ Hässleholm, Sweden ■ Jaiobei, China ■ Kearny, New Jersey, U.S. ■ Monterrey Foam, Mexico ■ Mount Vernon, Ohio, U.S. ■ Nanjing, China ■ Parainen, Finland ■ Portland Asphalt, Oregon, U.S. ■ Portland Roofing, Oregon, U.S. ■ Rockford, Illinois, U.S. ■ Tallmadge, Ohio, U.S. ■ Taloja, India ■ Tianjin Glass, China ■ Tiffin, Ohio, U.S. ■ Toronto, Canada ■ Yuhang GRS, China Waste Management Performance Measurement As we work to achieve our 2030 waste management goals, we use waste intensity to measure our performance. We continue to evaluate and improve upon the methods and mechanisms to track waste streams that are ultimately recycled, reused, or landfilled. When available, we use waste management or recycler invoices in our data reporting; otherwise, we rely on on-site weight scales. In the absence of scales, we use calculated estimates to determine the weights of our shipments. We assess our performance based on the final disposition of each material.