| Acrion Technologies, Inc.: Developers of technology to efficiently remove contaminants from landfill gas. |
| Air Compliance Testing, Inc.: Provides accurate, repeatable Stack Testing (Source Sampling) services. |
| Aniline Environmental: Provider of unique environmental services and technology for businesses and consumers. |
| AshTech Corporation: Designs and supplies custom mechanical ash handling systems for any type of solid fueled utility and industrial power generating facility. |
| Enviroserve: A full service organization dedicated to minimizing the problems associated with special waste removal and disposal. |
| Hepner Filters Sales & Service Inc.: Supplies and services filters for commercial and industrial use. |
| Metchem: Process equipment for pollution control and filtration. |
| Oil Skimmers Inc.: Provides tailored made skimming solutions for removing various types of water contamination including oil, fat, grease and sludge. |
| Papsco, Inc.: Distributors of filters, filtration, ultrapure water, pollution prevention, water and wastewater treatment equipment. |
| Trans Environmental Systems, Inc.: Provides the transportation industry with innovative, cost effective spill prevention and retention equipment. |
| Wesco - Waste Treatment Equipment Specialties Inc.: Industrial supplier of new, used, and reconditioned waste treatment systems and components. |
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