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.