Registered Companies

A

Advanced Environmental Laboratories, Inc. 
AECOM
Aerostar SES
AGCS
Agilent Technologies
Ahtna Facility Services Inc.
Air Force Civil Engineer Center (AFCEC)
Alaskan Department of Transportaion & Public Facilities - Statewide Avaiation
All4 LLC
Alpha Analytical
AlterEcho
AMAI
American Airlines
AMO Environmental Decisions
Andrews Engineering, Inc. 
Anchor QEA, LLC
Apes Companies
Apex Companies, LLC
Apple 
Aptim
AquaBlok, Ltd.
Aqueous Vets
Arcadis
Arclight Research & Consulting, LLC
Arizona Laboratory for Emerging Contaminants
Arizona State University
Aspect Consulting, LLC
Atlantic Aviation
AxNan

B

Barnes & Thornburg LLP
Battelle
Bay West LLC
BeachEdge Consulting
Bennett & Williams
Berkeley
Bick Law LLP
BP
Brice Engineering
Bristol Environmental Remediation Services, LLC
Brown and Caldwell
BSTI
Buckeye Partners, L.P.
Bureau Veritas Laboratories
Burns & McDonnell Engineering Company, Inc. 

C

Cal/EPA
California Department of Toxic Substance Control
Cameron-Cole, LLC
Carus Corporation
Cascade Environmental
CDM Smith 
Central Valley Regional Water Quality Control Board
CETCO
CGRS
Cherokee Nation Strategic Programs
Chevron
City & County of Denver
City of Fort Collins
City of Westminster
Clarkson University
Clean Harbors
Clean Harbors Environmental Services
Clemson University 
CO Department of Public Health & Environment
Colorado School of Mines
Colorado School of Public Health
Colorado State University
COLUMBIA Technologies
Confluence Environmental
Consortium for Research and Education
Corteva Agriscience
Cozen O'Connor
Cox Environmental Services
CRC Care
Crowell & Moring LLP
CTEH
Cyclopure, Inc.

D

Denver International Airport Denver Public Health & Environment
Department of Defense Estate & Infrastructure Group"
Department of Homeland Security
DeSimone Consulting Engineers
DeWind One Pass Trenching
Dillon Consulting Limited
Directional Technologies, Inc.
Directed Technologies Drilling
Dragun Corporation
Draper Aden Associates
Drexel University
DuPont Water Solutions

E

EA Engineering, Science, and Technology, Inc., PBC
Eagle Synergistics Optimizing Technologies, LLC
EarthCon Consultants
ECOS - ITRC
ECT2
Ellingson DTD
Energy Laboratories, Inc. 
ENPRESS LLC
ENRx Inc
EnSafe Inc. 
Environmental Business Specialists
Environmental Management, Inc. 
Environmental Planning Specialists
Environmental Research Group
Environmental Resources Management
Environmental Standards, Inc.
Environmental Works Inc. 
EOS Remediation
EPA
EPRI
ERM
Eurofins Environment Testing America
Evoqua Water Technologies
Exponent, Inc. 
ExxonMobil Environmental and Property Solutions Company

F

First Environmental, Inc.
Florida Dept. of Environmental Protection
Fraunhofer USA
FRx

G

GCAL /Pace Gulf Coast Analytical Laboratories
GEI Consultants
GEL Laboratories
GEO-Solutions, Inc. 
Geological Services & Consultants, Inc. 
Geoprobe Systems
Geosyntec Consultants, Inc.
Geotech Environmental Equipment, Inc.
GHD Inc.
Gilbane Federal
Godfrey & Kahn SC
Golder
Gradient
GSI Environmental Inc.
GSI North America Inc.
GZA GeoEnvironmental, Inc.

H

Haley & Aldrich, Inc.
Hedgerow Hill
HGL
HP Environmental, Inc.
HRSD
HRS Water Consultants, Inc. 

I

Illinois Sustainable Technology Center, Prairie Research Institute, 
University of Illinois at Urbana/Champaign
Infrastructure Alternatives
Instituto Superior de Agronomia
Integral Consulting
ISOTEC
 

J

Jacobs
Jacobs Engineering
Jenson Hughes 
JRW Bioremediation, LLC

K

KPMG

L

Laboratory Data Consultants, Inc.
LafargeHolcim
Langan Engineering and Environmental Services
LDC, Inc.
Lockheed Martin
Los Angeles City Attorney's Office
LRE Water
LT Environmental

M

Maryland Dept. of the Environment
Metro 
Metro Wastewater Reclamation District
MDEQ
MECX, Inc. 
Merit Laboratories
Metro Vancouver
Metro Wastewater Reclamation District
Michigan Department of Environment, Great Lakes and Energy
Mills Environmental Insurance Services, LLC
Minnesota Department of Health - Environmental Health Division

N

National Institute of Environmental Research
National Park Service
Native Village of Barrow
Naval Research Laboratory
Naval Facilities Engineering Command
NC State University
NCDEQ
NELSON Environmental Remediation
New Jersey Institute of Tech
New Mexico Tech
NewFields Government Services, LLC
Neptune and Company, Inc. 
North Carolina State University
Northrop Grumman
North Wind Site Services
Northwestern University
NSF International
NuStar

O

Olin Corporation
Onion Equipments
Orange County Water District
Oregon State University
Orion Environmental

P

Pace Analytical Services Inc. 
Pacific Northwest National Laboratory
Paris Environmental LLC
Parsons
PeroxyChem
Phillips 66
Pinyon Environmental
Phillips 66
Plummer 
Policy Navigation Group
Powell Water Systems 
PM Environmental, Inc.
Powell Water Systems
Princeton Geoscience, Inc.
Purdue University
Purolite Corporation

Q

QAE
Queen's University
Quint LLC

R

RACER Trust 
Ramboll
Raytheon Company
Redox Tech, LLC
REGENESIS
Remediation Products, Inc. (RPI)
Remington Technologies, LLC
RETTEW
RK Water
RPI Group
RJ LEE Group

S

Sanborn, Head & Associates, Inc. 
Savron
SC&A, Inc.
SCIEX
SCS ENGINEERS
Seacoast Science, Inc. 
Seaon Global
SGS AXYS
SGS North America, Inc.
Shannon and Wilson, Inc. 
Shell Global Solutions (US) Inc.
SiREM
SL Environmental Law Group PC
Smith Gardner, Inc. 
SNC-Lavalin
South Carolina Dept of Health and Environmental Control
South Platte Water Renewal Partners
SPB Consulting
Stanford University
Stanley Consultants, Inc.
Stantec
STEPTOE & JOHNSON LLP
Suncor Energy (USA), Inc.

T

Tanaq Consulting, Inc. 
Tasman Geosciences, Inc
TechLaw Consultants, Inc. 
Tehama
Terracon Consultants, Inc.
TestAmerica Laboratories
Tetra Tech
Texas Molecular LLC
Texas Southern University
Texas Tech University
The Boeing Company
The Hannon Law Firm
The Water Research Foundation
TRS Group, Inc.
Tri-County Health Department
Trihydro
Tuscon Water 

U

U of Houston
U.S. Air Force Civil Engineer Center
U.S. Department of Transportation
U.S. Geological Survey
UC Berkeley
UCLA
Ulteig Engineers, Inc.
UMKC
University of Alaska Fairbanks
University of Arizona
University of California Los Angeles
University of Colorado Boulder
University of Florida
University of Miami
University of Missouri-Kansas City
University of New Hampshire
University of Notre Dame
University of Pittsburg
University of Washington
US Army Chemical Biological Center
US Army Corps of Engineers
US Ecology
US EPA
US Geological Survey
US Navy 

V

Valero
Vermont Air National Guard 
VHB
Virginia Tech
Vista Analytical Laboratory
Vista GeoScience

W

WA Department of Ecology
Waste Management
Water Research Foundation
Weaver Consultants Group
Weck Laboratories, Inc. 
Wellington Labs LLC
Weston & Sampson
Weston Solutions, Inc.
Westwater Hydrology LLC
Wood
Woodard & Curran, Inc.
Wyoming Department of Environmental Quality

X

Xcel Energy

Y

Yellow Jacket Drilling Services

Z