August 2018

Despite solid results and strategic changes last year that pushed a number of Top 200 Environmental Firms higher on the 2018 list, some uncertain signals on the U.S. and global political fronts injected caution into the environmental marketplace, with total list revenue falling 2% to $53.37 billion from the previous year’s tally. But nearly three-quarters of this year’s listed firms see better signs for 2018 and ahead, with markets strengthening and projects on the move.

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Firms are ranked based on the % of their 2016 gross revenue from environmental services. Figures are in $ millions; percents are rounded and may not add up to 100. A company update or clarification is marked by number in red, with a detailed footnote on the side of each list page.

Two asterisks (**) indicate a firm not ranked on the 2017 Top 200 list.

DES Engineering and/or design; CSL Consulting and/or studies; CON Construction, contracting and/or remediation; CM-PM Construction management and/or program management; EQP Equipment or device manufacture; OPS Contract operations; R&D Technology and/or research and development, OTH Services not already designated.

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ENR 2018 Top 200 Environmental Firms

RANK 2018	RANK 2017	FIRM	TYPE OF WORK
1	1	AECOM, Los Angeles, Calif.	CM-PM/CSL/DES
2	**	JACOBS, Dallas, Texas1	CSL
3	3	CLEAN HARBORS INC., Norwell, Mass.	OTH2
4	5	TETRA TECH INC., Pasadena, Calif.	CSL
5	7	FLUOR CORP., Irving, Texas	CON
6	4	BECHTEL CORP, San Francisco, Calif.	CON
7	9	STANTEC, Edmonton, Alberta, Canada	DES
8	**	SALINI IMPREGILO, Milan, Italy	CON
9	**	WOOD PLC, Alpharetta, Ga.3	CSL/CON
10	12	SUEZ NORTH AMERICA, Paramus, N.J.	OPS
11	13	HDR, Omaha, Neb.	DES/CSL
12	8	ARCADIS NV, Amsterdam, Netherlands	CSL
13	15	ERM, London, England, U.K.	CSL
14	17	BLACK & VEATCH, Overland Park, Kan.	DES
15	23	GARNEY HOLDING CO., Kansas City, Mo.	CON
16	14	CDM SMITH, Boston, Mass.	DES
17	16	GOLDER ASSOCIATES, Palm Beach Gardens. Fla.	DES
18	19	LEIDOS INC., Reston, Va.	OTH4
19	21	KIEWIT CORP., Omaha, Neb.	CON
20	22	THE WALSH GROUP LTD., Chicago, Ill.	CON
21	28	AEGION CORP., Chesterfield, Mo.	CON
22	29	TRADEBE ENVIRONMENTAL SERVICES, Barcelona, Spain	OPS
23	27	GREAT LAKES DREDGE AND DOCK CORP., Oak Brook, Ill.	CON
24	26	MOTT MACDONALD GROUP, Iselin, N.J.	DES
25	31	BARNARD CONSTRUCTION CO. INC., Bozeman, Mont.	COB
26	32	GHD, Sydney, New South Wales, Australia	CSL
27	30	RAMBOLL, Copenhagen, Denmark	DES
28	71	SNC-LAVALIN GROUP INC., Montreal, Quebec, Canada	CSL
29	20	PARSONS CORP., Pasadena, Calif.	DES
30	33	ANTEA GROUP, Almere, Netherlands	CSL
31	35	ICF INTERNATIONAL, Fairfax, Va.	CSL
32	37	WEEKS MARINE INC., Cranford, N.J.	CON
33	34	LAYNE CHRISTENSEN CO., The Woodlands, Texas5	CON
34	36	BROWN AND CALDWELL, Walnut Creek, Calif.	DES
35	41	GILBANE BUILDING CO., Providence, R.I.	CON
36	**	SOUTHLAND HOLDINGS, Roanoke, Texas	CON
37	40	TRC, Lowell, Mass.	CSL/CON
38	25	WSP, Montreal, Quebec, Canada	CSL/CON
39	49	BAUER RESOURCES GMBH, Schrobenhausen, Germany	CON
40	51	NATIONAL RESPONSE CORP., Great River, N.Y.	OPS
41	38	PC CONSTRUCTION, South Burlington, Vt.	CON
42	86	ECC, Burlingame, Calif.	CON
43	45	CAROLLO ENGINEERS INC., Walnut Creek, Calif.	DES
44	50	BURNS & MCDONNELL, Kansas City, Mo.	CON
45	39	BOWEN ENGINEERING CORP., Indianapolis, Ind.	CON
46	47	GEOSYNTEC CONSULTANTS INC., Atlanta, Ga.	DES/CSL
47	52	HAZEN AND SAWYER, New York, N.Y.	DES
48	24	MCCARTHY HOLDINGS INC., St. Louis, Mo.	COB
49	46	LYLES CONSTRUCTION GROUP, Fresno, Calif.	CON
50	43	LOUIS BERGER, Washington, D.C.6	OPS
51	48	KOKOSING INC., Westerville, Ohio	CON
52	44	PCL CONSTRUCTION ENTERPRISES INC., Denver, Colo.	CON
53	54	CLEAN EARTH INC., Hatboro, Pa.	CON
54	66	WHARTON-SMITH INC., Sanford, Fla.	CON
55	74	NORTH WIND GROUP, Idaho Falls, Idaho	CON
56	64	SEVENSON ENVIRONMENTAL SERVICES INC., Niagara Falls, N.Y.	CON
57	53	WOODARD & CURRAN, Portland, Maine	DES
58	61	OBG, Syracuse, N.Y.	CSL
59	56	WORLEYPARSONS LTD., Sydney, New South Wales, Australia	CSL
60	57	WESTON SOLUTIONS INC., West Chester, Pa.	CSL
61	55	CARDNO LTD., Fortitude Valley, Queensland, Australia	CSL
62	62	ATC GROUP SERVICES LLC, Lafayette, La.	CON
63	60	SCS ENGINEERS, Long Beach, Calif.	DES/CSL
64	72	CASCADE ENVIRONMENTAL, Bothell, Wash.	CON
65	56	ULLIMAN SCHUTTE CONSTRUCTION LLC, Miamisburg, Ohio	CON
66	13	BATTELLE, Columbus, Ohio	R&D
67	42	ALBERICI/FLINTCO, St. Louis, Mo.	CON
68	63	TERRACON CONSULTANTS INC., Olathe, Kan.	CSL
69	84	CROWDER CONSTRUCTORS INC., Charlotte, N.C.	CON
70	59	BUREAU VERITAS, Fort Lauderdale, Fla.	CSL
71	65	APEX COS. LLC, Rockville, Md.	CSL
72	67	KLEINFELDER, San Diego, Calif.	CON/CSL/DES
73	70	EA ENGINEERING, SCIENCE AND TECHNOLOGY INC., Hunt Valley, Md.	DES/CSL
74	68	MICHAEL BAKER INTERNATIONAL, Pittsburgh, Pa.	CSL
75	78	HALEY & ALDRICH INC., Burlington, Mass.	CSL
76	85	PAL ENVIRONMENTAL SAFETY CORP., Long Island City, N.Y.	CON
77	91	REMEDIAL CONSTRUCTION SERVICES LP, Houston, Texas	CON
78	73	NAVARRO RESEARCH AND ENGINEERING INC., Oak Ridge, Tenn.	CON
79	75	TRINITY CONSULTANTS, Dallas, Texas	CSL
80	103	CHARTER CONTRACTING CO. LLC, Boston, Mass.	CON
81	77	LANGAN ENGINEERING & ENVIRON. SERVICES INC., Parsippany, N.J.	DES
82	90	SUKUT CONSTRUCTION LLC, Santa Ana, Calif.	CON
83	118	CROSSLAND HEAVY CONTRACTORS INC., Columbus, Kan.	OPS
84	94	AMERICAN INTEGRATED SERVICE INC., Wilmington, Calif.	CON
85	81	ECOLOGY AND ENVIRONMENT INC., Lancaster, N.Y.	DES/CSL
86	110	M.B. KAHN CONSTRUCTION CO. INC., Columbia., S.C.	CON
87	95	CIVIL & ENVIRONMENTAL CONSULTANTS INC., Pittsburgh, Pa.	DES
88	83	C. OVERAA & CO., Richmond, Calif.	CON
89	97	SWCA ENVIRONMENTAL CONSULTANTS, Phoenix, Ariz.	CSL
90	79	MAX FOOTE CONSTRUCTION CO. LLC, Mandeville, La.	CON
91	**	QM ENVIRONMENTAL, Mississauga, Ontario, Canada	CON
92	89	ENVIRONMENTAL RESTORATION LLC, Fenton, Mo.	CON
93	82	ALLAN MYERS, Worcester, Pa.	CON
94	88	ANCHOR QEA LLC, Seattle, Wash.	CSL
95	60	C.H. NICKERSON & CO. INC., Torrington, Conn.	CON
96	109	FREESE AND NICHOLS INC., Fort Worth, Texas	DES
97	93	GROUNDWATER & ENVIRONMENTAL SERVICES INC., Wall Township, N.J.	CON/DES/CSL
98	98	ROUX ASSOCIATES INC., Islandia, N.Y.	CSL/CM-PM/DES/CON
99	69	RICE LAKE CONSTRUCTION GROUP, Deerwood, Minn.	CON
100	106	J.R. FILANC CONSTRUCTION CO. INC., Escondido, Calif.	CON

FOOTNOTES: 1 Jacobs acquired 2017 Top 200 ranked firm last year; 2 Firm does hazardous and nonhazardous waste management and transport; 3 Wood plc acquired 2017 Top 200 ranked firm AMEC/Foster Wheeler last year; 4 Firm does systems integration; 5 Layne Christensen was acquired by Granite Construction in June 2018; 6 Louis Berger agreed in August 2018 to be acquired by WSP Global