| envasns.org | Environmental Industry Interactive (EII) |
| hmac.org | Hazardous Materials Advisory Council |
| iswa.org | International Solid Waste Management Association (ISWA) |
| wastec.org | Waste Equipment Technology Association (WASTEC) |
| nswma.org | National Solid Wastes Management Association (NSWMA) |
| isri.org | Institute of Scrap Recycling Industries |
| compostingcouncil.org | Us Composting Council |
| costha.com | Conference on Transportation of Hazardous Articles (COSTHA) |
| astswmo.org | Association of State and Territorial Solid Waste Management Officials (ASTSWMO) |
| asiwpca.org | Association of State and Interstate Water Pollution Control Administrators (ASIW |
United States , Maryland , Silver Spring