| ADA Technologies |
Fuel-Tech N.V. |
Peerless Manufacturing Co. |
| Advanced Environmental Recycling Technologies |
General Electric |
PerkinElmer Life & Analyt. Sci. |
| AEA Technology plc |
Gideon Informatics |
Perma-Fix Environmental Svcs |
| Aerotech Laboratories Inc. |
GZA GeoEnvironmental |
Philip Services Corp. |
| Agilent Technologies |
H.I.G. Capital of Florida |
Progress Materials Inc. |
| Alcoa |
Haestad Methods |
QED Environmental Systems |
| American Ecology Inc. |
Hake Group |
Resource Recycling |
| American Electric Power |
Hewlett-Packard |
Rhodia Eco Services |
| BHA Group Holdings Inc. |
Hudson Technologies |
Separation Technologies Inc. |
| Brown & Caldwell |
HydroChem |
Sequoia Analytical |
| Clean Environment Equipment |
IMCO Recycling |
Severn-Trent Laboratories Inc. |
| Clean Harbors Inc. |
InteGreyted Consultants |
Simply Organic Ltd. |
| Columbia Analytical Services Inc. |
Ion Track |
SITA |
| Corning Inc. |
Jacobs Engineering Group |
Southern Indiana Gas & Electric Co. |
| DataChem Laboratories Inc. |
K2 Industrial Services |
Stake Technology Ltd. |
| Dominion’s Virginia Electric Power Company |
KBF Pollution Management Inc. |
Stericycle |
| Donaldson Company |
Keltic Financial Partners L.P. |
Strategic Directions International |
| Donley Technology Inc. |
Kettle Valley Dried Fruit Ltd. |
TechKNOWLEDGEy Strategic Group |
| Energy Laboratories Inc. |
Kleinfelder Inc. |
Teledyne Technologies Inc. |
| ENSR International Inc. |
Lexware International |
Tennessee Valley Authority |
| Environmental Elements Corp. |
Matrix Service |
Teris LLC |
| Environmental Financial Consulting Group Inc. (EFCG) |
McIlvaine Co. |
The BOC Group |
| Environmental Information Ltd. |
Membrane Technology & Research |
Titan America |
| Environmental Support Solutions |
Microbac Laboratories |
Veridium Environmental Corp. |
| ERM |
North Creek Analytical Inc. |
Weiss Associates |
| ERP Environmental Services |
Nova Analytics Corp. |
Wild West Organic Harvest Co-Operative Association |
| Exergy Technologies Corp. |
Onyx Environmental Services LLC |
Wisconsin Electric Power Co. |
| Farkas Berkowitz & Co. |
Opta Food Ingredients |
WRS Infrastructure & Environment |
| Fluor Corp. |
P&K Microbiology Services |
ZweigWhite |