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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 UCOR1 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 CH2M 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 Solutions 2800 Solway Road Knoxville, TN 37931 865-705-9804 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 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 5 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 CH2M Denver, CO USA Robert Cook NA 1981 7 3 Perma-Fix Environmental Services 1093 Commerce Park Drive, Ste. 300 Oak Ridge, TN 37830 865-690-0501 perma-fix.com 96 / 249 N Y Y N N NA Perma-Fix Environmental Services Atlanta, GA Mark Duff Executive vice president, CEO 1990 8 5 Spectra Tech Inc. 132 Jefferson Court Oak Ridge, TN 37830 865-483-7210 spectratechinc.com 95 / 150 Y Y Y Y Y NA NA NA Dr. Loong Yong President 1995 9 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 10 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 11 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 12 16 Boston Government Services (BGS) 105 Mitchell Road, Ste. 101 Oak Ridge, TN 37830 865-272-8400 bgs-llc.com 38 / 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 13 14 Civil & Environmental Consultants Inc. 2704 Cherokee Farm Way, Ste. 101 Knoxville, TN 37920 865-977-9997 cecinc.com 37 / 800 Y N 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 14 9 Alliant Corporation 320 N. Cedar Bluff Road, Suite 200 Knoxville, TN 37923 865-934-2222 www.alliantcorp.com 36 / 48 N 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 15 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 16 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 16 8 Merrick & Company 1093 Commerce Park Drive Oak Ridge, TN 37830 865-685-5520 merrick.com 34 / 560 Y Y NA Merrick & Company Greenwood Village, CO U.S. David Huelskamp Christopher Sherry Chairman, CEO President4 1955 1 Partnership of AECOM, CH2M; 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. ; 4 David Luke, COO, Steve Betts, CFO 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.