1 | 1 | UCOR, an Amentum-led partnership with Jacobs 701 Scarboro Road Oak Ridge, TN 37830
| 865-576-8321 ucor.com 1,842 / NA
| Y
| Y
| Y
| Y
| Y
| Environmental cleanup; radioactive waste management, environmental monitoring and restoration, asset management
| Amentum Jacobs Germantown, MD Dallas, TX
| Ken Rueter President, CEO 2011
|
2 | 5 | GEM Technologies 2033 Castaic Lane Knoxville, TN 37932
| 865-560-9434 gemtechnologiesinc.com 245 / NA
| | Y
| | | | Services for environmental restoration, decontamination and demolition, waste management
| NA NA
| Michael Evans President, CEO 1994
|
3 | 3 | Strata-G, LLC 2027 Castaic Lane Knoxville, TN 37932
| 865-934-3400 stratag.org 240 / 240
| Y
| Y
| Y
| Y
| Y
| ES&H, infrastructure, utilities, nuclear operations, waste management, project management
| NA NA
| Elliott Barnett John Patterson CEO President 2002
|
4 | 4 | Atkins Nuclear Secured 545 Oak Ridge Turnpike Oak Ridge, TN 37830-7187
| 865-483-8247 atkinsglobal.com/nuclear 234 / 547
| | Y
| Y
| Y
| Y
| Radioactive waste management, nuclear safety, nuclear quality assurance, project management, staff augmentation support services
| SNC-Lavalin Montreal, QC Canada
| Tom Jouvanis President 2001
|
5 | 2 | North Wind Group 2800 Solway Road Knoxville, TN 37931
| 865-556-8014 northwindgrp.com 165 / 1,185
| Y
| Y
| Y
| Y
| Y
| NA
| Cook Inlet Region Inc. Anchorage, AK
| Chris Leichtweis CEO, president 1997
|
6 | 6 | Spectra Tech, Inc. 132 Jefferson Court Oak Ridge, TN 37830
| 865-483-7210 spectratechinc.com 128 / 185
| Y
| Y
| Y
| Y
| Y
| NA
| NA NA
| Dr. Loong Yong President 1995
|
7 | 10 | Perma-Fix Environmental Services 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
|
8 | 7 | SES Group of Companies 1006 Floyd Culler Court Oak Ridge, TN 37830
| 865-481-7837 specproenv.com 100 / 375
| | | Y
| Y
| Y
| Design-build construction; a broad range of environmental services; DoD fuel systems construction, maintenance, repair
| Bristol Bay Native Corp. Anchorage, AK
| Basil Skelton President, CEO 1992
|
9 | 8 | Wood Environment & Infrastructure Solutions, Inc. 2030 Falling Waters Road, Ste. 300 Knoxville, TN 37922
| 865-671-6774 woodplc.com 92 / NA
| Y
| Y
| Y
| Y
| Y
| Environmental investigation, remedial design and implementation, water, permitting, mitigation
| Wood, plc Aberdeen Scotland
| Jennifer Stone Office manager 1972
|
10 | 11 | S&ME Inc. 1413 Topside Road Louisville, TN 37777
| 865-970-0003 smeinc.com 91 / 1,100
| | | Y
| Y
| Y
| NA
| S&ME Inc. Louisville, TN
| Elizabeth Porter Randal Martin Michael Stomer Eric Solt Rob Sanders VP VP VP Environmental senior project manager Geomatics group leader 1988
|
11 | 12 | Boston Government Services (BGS) 105 Mitchell Road, Ste. 101 Oak Ridge, TN 37830
| 866-730-7353 bgs-llc.com 81 / 203
| | Y
| Y
| | | Engineering, technology, security firm providing expert solutions for energy/environmental projects; nuclear safety, specialized design engineering, safeguards/security, information/program management, operations support
| NA NA
| Harry Boston President 2007
|
12 | 9 | Navarro Research and Engineering Inc. 1020 Commerce Park Drive Oak Ridge, TN 37830
| 865-220-9650 navarro-inc.com 60 / 698
| Y
| Y
| Y
| Y
| Y
| NA
| NA TN
| Susana Navarro-Valenti President 1993
|
13 | 13 | GEOServices 2561 Willow Point Way Knoxville, TN 37931
| 865-539-8242 geoservicesllc.com 58 / 136
| Y
| Y
| Y
| Y
| Y
| Construction services, laboratory services
| GEOServices Knoxville, TN
| Dennis Huckaba Professional engineer, president 2006
|
14 | NR | Barge Design Solutions, Inc. 520 W. Summit Hill Drive, Ste. 1202 Knoxville, TN 37902
| 865-637-2810 bargedesign.com 55 / 449
| | | Y
| Y
| Y
| Barge provides multidisciplinary engineering (civil, transportation, mechanical, electrical, structural, hydrologic/hydraulic, and environmental) and architectural services from pre-concept to completion for a wide variety of public and private projects.
| Barge Design Solutions, Inc. Nashville, TN
| Casey Tyree VP, director of projects, site solutions 1972
|
15 | 14 | Civil & Environmental Consultants Inc. 2704 Cherokee Farm Way, Ste. 101 Knoxville, TN 37920
| 865-977-9997 cecinc.com 45 / 1,150
| | | Y
| Y
| Y
| Phase I/due diligence; site investigation & remediation; hydrogeology & groundwater modeling; permitting & compliance
| Civil & Environmental Consultants Inc. Pittsburgh, PA
| James Tomiczek, P.E. VP, office lead 2014
|
16 | 15 | Alliant Corporation 320 N. Cedar Bluff Road, Ste. 200 Knoxville, TN 37923
| 865-934-2222 alliantcorp.com 44 / 53
| | | Y
| Y
| Y
| Energy management, program development and management, geo-environmental, field operations support, waste management
| NA NA
| Terence Douglas Greg Galaher President Executive VP 2000
|
17 | NR | XCEL Engineering Inc. 1066 Commerce Park Drive Oak Ridge, TN 37830
| 865-481-3200 xceleng.com 40 / 45
| | | Y
| Y
| Y
| NA
| NA NA
| Joe Zimmerman Dr. Iqbal Ahmed President VP
2003
|
18 | 16 | Strata 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
| Charles Ferst CEO 1992
|
19 | 17 | Process Engineering Associates 700 S. Illinois Ave., Ste. A202 Oak Ridge, TN 37830
| 865-220-8722 processengr.com 28 / 55
| | | | | | Chemical process engineering design and process safety services
| NA NA
| L.H. Boyd Jr. Managing partner 1996
|