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Prefer PDFs? A printer-friendly PDF of this list is available. Download PDF file Prefer Excel? A complete spreadsheet of this list is available. Download Excel file Knoxville-Area Environmental Engineering & Consulting Firms Ranked by Number of Local Employees Rank '18 '17 Company Phone Website Loc. emps./Tot. emps. Bioremediation Nuclear rem. Compliance Water mgmt. Env. impact assmt. Other services Parent company Top local executive Year founded 1 1 UCOR P. O. Box 4699, MS 7052 Oak Ridge, TN 37831 865-576-8321 ucor.com 1,700 / 1,700 Y Y Y Y Y Radioactive waste management, environmental monitoring and restoration, asset management AECOM Jacobs NA Ken Rueter President, CEO/ETTP Cleanup Project Manager 2011 2 NR Atkins 545 Oak Ridge Turnpike Oak Ridge, TN 37830 865-483-8247 atkinsglobal.com/nuclear 591 / 55,000 Y Y Y Y Y NA SNC-Lavalin Montreal, QC Canada Tom Jouvanis President 2001 3 4 North Wind Group 2800 Solway Road Knoxville, TN 37931 865-556-8014 northwindgrp.com 235 / 1,200 Y Y Y Y Y NA Cook Inlet Region Inc. Anchorage, AK Chris Leichtweis CEO, president 1997 4 2 Strata-G, LLC 2027 Castaic Lane Knoxville, TN 37932 865-934-3400 stratag.org 200 / 210 Y Y Y Y Y Utilities, infrastructure, ES&H, nuclear operations, waste management NA NA Dan Hurst President 2002 5 NR GEM Technologies 2033 Castaic Lane Knoxville, TN 37932 865-560-9434 gemtechnologiesinc.com 173 / NA Y NA NA NA Michael Evans President, CEO 1994 6 5 Spectra Tech, Inc. 132 Jefferson Court Oak Ridge, TN 37830 865-483-7210 spectratechinc.com 128 / 150 Y Y Y Y Y NA NA NA Dr. Loong Yong President 1995 7 6 CH2M HILL 2095 Lakeside Centre Way, Ste. 200 Knoxville, TN 37922 865-560-2801 ch2m.com 100 / 18,988 Y Y Y Y Y Military munitions response/investigation Jacobs Engineering Group Inc.1 Dallas, TX USA Robert Cook Bob Frear Steve Walker Bob Frear Steve Walker NA 1981 7 NR Navarro Research and Engineering 1020 Commerce Park Drive Oak Ridge, TN 37830 865-220-9650 www.navarro-inc.com 100 / 650 Y Y Y Y Y Environmental remediation, regulatory compliance, long-term monitoring, groundwater modeling, waste management NA NA Susana Navarro-Valenti President 1993 9 3 Perma-Fix Environmental Services 1093 Commerce Park Drive, Ste. 300 Oak Ridge, TN 37830 865-690-0501 perma-fix.com 96 / 249 Y Y NA Perma-Fix Environmental Services Atlanta, GA Mark Duff President, CEO 1990 10 NR Wood Environment & Infrastructure Solutions, Inc. 2030 Falling Waters Road, Ste. 300 Knoxville, TN 37922 865-671-6774 woodplc.com 91 / 55,000 Y Y Y Y Y Stormwater, green infrastructure, mercury remediation, self perform injections for remediation projects. Wood, plc Aberdeen Scotland Jennifer Stone Office Manager 1972 11 7 SES Group of Companies 1006 Floyd Culler Court Oak Ridge, TN 37830 865-481-7837 specproenv.com 90 / 243 Y Y Y NA Bristol Bay Native Corp. Anchorage, AK Basil Skelton President, CEO 19922 12 9 Alliant Corporation 320 N. Cedar Bluff Road, Suite 200 Knoxville, TN 37923 865-934-2222 alliantcorp.com 52 / 48 Y Y Y Y Consulting and professional services for technical and scientific disciplines serving commercial clients and federal and municipal governments. 3 NA NA Terence Douglas Greg Galaher President Executive Vice President 2000 13 11 GEOServices 2561 Willow Point Way Knoxville, TN 37931 865-539-8242 geoservicesllc.com 50 / 165 Y Y Y Y Y NA NA NA Dennis Huckaba Professional Engineer, Principal 2006 14 16 Boston Government Services (BGS) 105 Mitchell Road, Ste. 101 Oak Ridge, TN 37830 865-272-8400 bgs-llc.com 43 / 52 Nuclear safety and criticality safety engineering for D&D, quality assurance (NQA-1), regulatory compliance, D&D waste planning, waste management operations support, and environmental consulting NA NA Harry Boston President 2007 15 14 Civil & Environmental Consultants Inc. 2704 Cherokee Farm Way, Ste. 101 Knoxville, TN 37920 865-977-9997 cecinc.com 37 / 800 Y Y Y Y Air dispersion modeling, hydrogeology & groundwater modeling Civil & Environmental Consultants Inc. Pittsburgh, PA United States James Tomiczek, P.E. Vice president, office lead 2014 16 12 Process Engineering Associates 700 S. Illinois Ave., Ste. A202 Oak Ridge, TN 37830 865-220-8722 processengr.com 35 / 55 Chemical process design and process safety services NA NA L.H. Boyd Jr. Managing partner 1996 17 15 Strata Environmental Services 110 Perimeter Park Road, Ste. E Knoxville, TN 37922 865-539-2077 strataenv.com 34 / 34 Y Y Y Y Environmental due diligence (Phase I & II); environmental affairs outsourcing including air, storm water, fuel system permitting, and environmental management software NA NA D. Gregory Jernigan President 1992 1 Source declined to participate. Information from 2017 survey; 2 Local founding of SES's predecessor, STEP; 3 Environmental services include (energy management, program development & management, geo-environmental, field operations support, and waste management), safety and health, and project controls support. 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.