1. Biffa PLC
2. Casella Waste Systems Inc.
3. Cleanaway Waste Management Limited
4. Covanta Holding Corporation
5. Green Land Recycling LLC
6. Interface Inc.
7. Northstar Recycling
LLC
8. Recology Inc.
9. Reconomy (UK) Ltd.
10. Renewi PLC
11. RU Recycling- und Umweltdienst GmbH
12. Seiko Epson Corp.
13. Stericycle Inc.
14. TerraCycle Inc.
15. Waste Management Inc.