Greater Knoxville Book of Lists | Knox.biz

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Knoxville-Area Environmental Engineering & Consulting Firms Ranked by Number of Local Employees
Rank
'22
'21CompanyPhone
Website
Loc. emps./Tot. emps.
Bioremediation
Nuclear rem.
Compliance
Water mgmt.
Env. impact assmt.
Other services
Parent companyTop local executive
Year founded
11United Cleanup Oak Ridge LLC (UCOR)
701 Scarboro Road
Oak Ridge, TN 37830
865-576-8321
ucor.com
2,122 / 2,122
Y
Y
Y
Y
Y
Environmental cleanup; radioactive waste management, environmental monitoring and restoration, asset management
Amentum
Jacobs
Falls Church, VA
Dallas, TX
Ken Rueter
President, CEO
2011
22Atkins Nuclear Secured
545 Oak Ridge Turnpike
Oak Ridge, TN 37830-7187
865-483-8247
atkinsglobal.com/nuclear
248 / 534
Y
Y
Y
Y
Nuclear safety, project management, business support services, quality assurance, staff augmentation, radioactive waste management
SNC-Lavalin
Montreal, QC Canada
Tom Jouvanis
President
2001
34GEM Technologies
2033 Castaic Lane
Knoxville, TN 37932
865-560-9434
gemtechnologiesinc.com
238 / NA
Y
Y
Y
Radiological and hazardous decontamination and demolition, waste management, infrastructure support
NA
NA
Michael Evans
President, CEO
1994
33Strata-G, LLC
2027 Castaic Lane
Knoxville, TN 37932
865-934-3400
stratag.org
238 / 258
Y
Y
Y
Y
Y
Utilities, infrastructure, ES&H, nuclear operations, waste management
NA
NA
Elliott Barnett
John Patterson
CEO
President
2002
55North Wind Group
2800 Solway Road
Knoxville, TN 37931
865-556-8014
northwindgrp.com
196 / 2,097
Y
Y
Y
Y
Y
NA
Cook Inlet Region Inc.
Anchorage, AK
Christopher Leichtweis
CEO, president
1997
66Spectra Tech, Inc.
132 Jefferson Court
Oak Ridge, TN 37830
865-483-7210
spectratechinc.com
137 / NA
Y
Y
Y
Y
Y
NA
NA
NA
Dr. Loong Yong
President
1995
77Perma-Fix Environmental Services1
1093 Commerce Park Drive, Ste. 300
Oak Ridge, TN 37830
865-690-0501
perma-fix.com
111 / 374
Y
Y
Y
Nuclear/radioactive waste management
Perma-Fix Environmental Services
Atlanta, GA
Mark Duff
President, CEO
1990
89Boston Government Services (BGS)
105 Mitchell Road, Ste. 101
Oak Ridge, TN 37830
866-730-7353
bgs-llc.com
103 / 260
Y
Y
Y
Engineering design, nuclear safety analysis, nuclear criticality safety, nuclear operations support, capital project management, waste planning
NA
NA
Harry Boston
President, CEO
2007
98SES Group of Companies1
1006 Floyd Culler Court
Oak Ridge, TN 37830
865-481-7837
specproenv.com
100 / 535
Y
Y
Y
Design-build and design-bid-build construction, heavy and civil construction, DoD fuel systems construction
Bristol Bay Native Corp.
Anchorage, AK
Basil Skelton
President, CEO
19922
1010S&ME Inc.1
1413 Topside Road
Louisville, TN 37777
865-970-0003
smeinc.com
76 / 1,128
Y
Y
Y
Y
Geotechnical and civil engineering, environmental, construction services, land development, planning, geomatics
S&ME Inc.
Louisville, TN
Elizabeth Porter
Randal Martin
Leira Douthat
Ken Barry
Michael Stomer
Eric Solt
Rob Sanders
Brad Salsbury
VP
VP
VP
VP
VP
Environmental senior project manager
Geomatics group leader
Senior project manager
1988
1113Barge Design Solutions, Inc.
520 W. Summit Hill Drive, Ste. 1202
Knoxville, TN 37902
865-637-2810
bargedesign.com
64 / 461
Y
Y
Y
Multidisciplinary engineering (civil, transportation, mechanical, electrical, structural, hydrologic/hydraulic, and environmental), architectural, landscape architectural, interior design, geomatics, management consulting, and information management services
Barge Design Solutions, Inc.
Nashville, TN
Casey Tyree
VP
1972
1215Navarro Research and Engineering Inc.
1020 Commerce Park Drive
Oak Ridge, TN 37830
865-220-9650
navarro-inc.com
60 / 600
Y
Y
Y
Y
Y
Waste management
NA
TN
Susana Navarro
President
1993
1316Civil & Environmental Consultants Inc.
2704 Cherokee Farm Way, Ste. 101
Knoxville, TN 37920
865-977-9997
cecinc.com
58 / 1,304
Y
Y
Y
Phase I/due diligence, site investigation, remediation hydrogeology, groundwater modeling, permitting, compliance
Civil & Environmental Consultants Inc.
Pittsburgh, PA
Aaron Henry
P.E. principal, office lead
2014
1311Wood Environment & Infrastructure Solutions, Inc.1
2030 Falling Waters Road, Ste. 300
Knoxville, TN 37922
865-671-6774
woodplc.com
58 / 40,000
Y
Y
Y
Y
Y
Environmental investigation, remedial design and implementation, water, permitting, mitigation
Wood PLC
Aberdeen, Scotland
Edwin Watkins
Operations manager
1972
1311GEOServices1
2561 Willow Point Way
Knoxville, TN 37931
865-539-8242
geoservicesllc.com
58 / 136
Y
Y
Y
Y
Y
Construction services, laboratory services
GEOServices1
Knoxville, TN
Dennis Huckaba
Professional engineer, president
2006
1614Alliant Corporation
320 N. Cedar Bluff Road, Ste. 200
Knoxville, TN 37923
865-934-2222
alliantcorp.com
56 / NA
Y
Y
Y
Energy management, engineering, project control and management, estimating, geoenvironmental, field operations support
NA
NA
Terence Douglas
Greg Galaher
President
Executive VP
2000
1718XCEL Engineering Inc.
1066 Commerce Park Drive
Oak Ridge, TN 37830
865-481-3200
xceleng.com
47 / NA
Y
Y
Y
NA
NA
NA
Joe Zimmerman
Dr. Iqbal Ahmed
President
VP
20033
1817Amentum
105 Mitchell Road, Ste. 200
Oak Ridge, TN 37830
865-425-7000
amentum.com
44 / NA
NA
Amentum
Germantown, MD
Cheryl Cabbil
Robert Sledzik
Richard Giannelli
Paul Gubanc
VP
VP
PE, senior project manager, office manager
PE chief nuclear safety officer
1999
1919Strata Environmental Services
110 Perimeter Park Road, Ste. E
Knoxville, TN 37922
865-539-2077
strataenv.com
30 / 30
Y
Y
Y
Y
Environmental due diligence; environmental outsourcing (air, water, waste, fueling); and environmental management software
NA
NA
Kevin Parr
President
1992
1 Source declined to participate. Information from 2021 survey; 2 Local founding of SES's predecessor, STEP; 3 Re-established
Source: Individual company representatives, individual company websites. NA=not applicable or not available. If you notice an error or omission, please contact Hayley Choy at 865-342-6494 or lists@knoxvillebiz.com.

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