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| Cygnus Group Helps businesses and other organizations integrate environmental concepts into their planning, marketing and communications activities, particularly regarding waste-prevention strategies. |   |
| Shannon & Wilson, Inc. Products are services are provided to the architectural/engineering industry and the federal government. Provider of geotechnical R&D and waste remediation services including earthquake and groundwater studies. |   | |
| Dayton & Knight Provider of engineering and environmental consulting services in water, wastewater treatment and solid waste management. |   | |
| National Waste Associates Provider of waste management and custom consulting services. |   | |
| Tighe & Bond Environmental engineering consultants focusing on water, wastewater, solid waste and hazardous waste issues. |   | |
| EN-PRO Project and Engineering Services Environment auditor and process engineering consultant for air-pollution control systems and solid-waste management. |   | |
| Refuse/Environmental Systems Environmental management company providing services in solid and hazardous waste management, heavy metal soil remediation, wastewater treatment , recycling, odor control, consulting and composting. |   | |
| JVI Companies Also provides asbestos and lead abatement, remediation, insulation, demolition and maintenance services. Waste and debris-handling company. |   | |
| Environmental Quality Management Provider of environmental engineering for waste management, remediation, air quality, wastewater, health and safety audits and safety audits, compliance and site assessments. |   | |
| Western Summit Constructors Inc. Environmental contractors of water/wastewater facilities, groundwater remediation, solid waste , pipelines, biosolids, water storage facilities and landfill gas recovery facilities. |   | |
| Hilton Farnkopf & Hobson Provider of financial, economic and general consulting services to solid waste, water and wastewater agencies. |   | |
| Dow Gas Treating: Waste Management Consulting Solutions for Natural Gas, LNG, Petrochemical, Refining, Tail & Flue Gas, Gasification. Selective or Bulk Removal of CO2, H2S, SO2, Amine Management. |   | |
| NCSU Water Quality Group Provider of services for water quality information and technical assistance on natural resources and waste management. |   | |
| Greeley and Hansen Environmental engineering firm specializing in water, wastewater and solid-waste management. |   | |
| Disposal Solutions Offers waste processing and disposal, waste transportation, tank cleaning and remediation services. |   | |
| Earth Tech, Inc. Services include contract operations for waste and wastewater systems; planning, analysis, engineering and construction for transportation systems; engineering and con. Provider of environmental, engineering and construction consulting services. |   | |
| OnSite Services associated with water, waste, energy and environmental management to utilities and industrial clients. |   | |
| Clean Air Environmental Provides compliance testing and environmental consulting services to meet air regulations in the waste management, oil & gas, commercial energy and sanitation services industries. |   | |
| Envirocon Environmental remediation construction firm providing services in mine reclamation, contaminated soil and sludge stabilization, repository construction, capping and containment, decontamination and sludge stabilization, decontamination, demolition and decommissioning. |   | |
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