ABATEMENT TECHNOLOGIES INC.
AECOM
ARCADIS NV
BACTECH ENVIRONMENTAL CORP.
CYPHER ENVIRONMENTAL LTD.
ENERGY CAPITAL PARTNERS
ENVIRONMENTAL REMEDIATION RESOURCES PTY LTD.
EVERGREEN PACIFIC PARTNERS
FREUDENBERG FILTRATION TECHNOLOGIES
GENERAL ELECTRIC CO.
GEO-CLEANSE INTERNATIONAL INC.
GEOVATION ENGINEERING
GROUND/WATER TREATMENT & TECHNOLOGY LLC
HYDRUS TECHNOLOGY
IVEY INTERNATIONAL INC.
LENNOX INTERNATIONAL
SIEMENS AG
SRL PLASMA PTY LTD.
STANTEC Inc.
TELEDYNE TECHNOLOGIES INC.
TETRA TECH Inc.
THERMO FISHER SCIENTIFIC INC.
TRC COMPANIES INC.
WORLEYPARSONS LTD.