Acme Remediation, LLC
Acuity Environmental Solutions
AECOM
Ahtna Facility Services, Inc.
ALS Group USA
Amplified Geochemical Imaging, LLC
AMS
A-Z Solutions, Inc.
BC Technologies, Ltd.
Bodycote Thermal Processing
BRISEA Group
Camsco
Carbon Activated Corporation
Chesapeake Energy
Chevron ETC
COWI, Denmark
Dakota Technologies
DeepEarth Technologies, Inc.
Defiant Technologies, Inc.
Denbury Onshore, LLC
EarthCon Consultants, Inc.
EcoAnalysts, Inc.
Ecological Associates, Inc.
Endeavor Energy Resources
Environmental Defense Fund
Environmental Standards, Inc.
EOG Resources, Inc.
Eurofins Air Toxics, Inc.
Explorer Pipeline
GEI Consultants, Inc.
Geo Strata Environmental Consultants
Golden Specialty Inc.
Ground Water Protection Council
Habitat Management, Inc.
Hess Corporation
Huntsman
HY-BON Engineering
HydroGEOPHYSICS
Hydrozonix
12M Associates, LLC
IMMIX, LLC
INPEX Corporation, Technical Research Center
ISS
Kaiser-Francis Oil Company
Kemira
Kuwait Oil Company
Lion Technology, Inc.
Locus Bio-energy Solutions, LLC
LT Environmental, Inc.
NASA Kennedy Space Center Technology Transfer Program
Newfield Exploration Company
Oasis Petroleum
Ohio Soil Recycling, LLC
Oklahoma State University
Ontario Ministry of the Environment & Climate change
Pastor, Behling & Wheeler, LLC
Petro Harvester
Railroad Commission of Texas
Range Resources
Remedial Construction Services, LP (RECON)
Rice University
River City Pressure Cleaning Equipment
Saudi Aramco
Scientific Ideas Limited
Scott Energy Technologies
SCS Engineers
Siemens
Sinopec Fifth Construction Co., LTD
SiREM
Spartan Energy Partners
Sport Environmental Services
Symmetry Oilfield Solutions
Talon/LPE
TCOR Management
TEA, Inc.
TEP Barnett USA, LLC
Terracon Consultants, Inc.
Terran Corporation
TerraStryke Products, LLC
The 98th Meridian Foundation
The BioSolve Company
The University of Tulsa
TransCanada Pipelines Ltd
TRC
U.S. Fish & Wildlife Service
Universidad Juarez Autonoma de Tabasco
University of Houston, Petroleum Engineering Dept.
University of Oklahoma
Veil Environmental, LLC
Weaver Consultants Group
WikiNet
Wolverine Hydrovac, LLC
WSP USA
Yellow Jacket Drilling Services

(Pre-Registered Organizations as of 10-23-17)