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NAICS 541620

Top contractors in NAICS 541620

The 215 contractors with tracked federal awards in NAICS 541620, totalling $1,184,468,955. Ranked by award value.

See live NAICS 541620 opportunities →All contractors

1EASTERN RESEARCH GROUP INC$174,359,33972 awards
2TETRA TECH, INC.$129,824,66172 awards
3PROJECT ENHANCEMENT CORPORATION$122,313,4566 awards
4LYNKER CORPORATION$121,308,8486 awards
5S C & A INC$87,620,06016 awards
6WESTON-TECHLAW JV LLC$27,095,8407 awards
7SKEO SOLUTIONS, INC$23,758,4705 awards
8GULF SOUTH RESEARCH CORP$21,989,3936 awards
9THE CADMUS GROUP LLC$21,013,83722 awards
10BLUESTONE ENVIRONMENTAL GROUP, INC.$19,436,5184 awards
11WESTON SOLUTIONS INC$19,070,48015 awards
12ICF INCORPORATED, L.L.C.$17,044,5675 awards
13RESEARCH PLANNING, INC.$15,086,2306 awards
14CDM FEDERAL PROGRAMS CORPORATION$13,734,6674 awards
15WSP USA SOLUTIONS INC$13,226,8895 awards
16MERRICK & COMPANY$12,612,0181 awards
17VERNADERO GROUP INC$12,491,9604 awards
18SIGNATURE SCIENCE LLC$11,506,0831 awards
19HAZTRAIN INC$11,044,8022 awards
20RESOURCE MANAGEMENT GROUP, INC.$11,032,3341 awards
21MELWOOD HORTICULTURAL TRAINING CENTER, INC.$10,803,0581 awards
22HSG, LLC$9,969,3255 awards
23AECOM TECHNICAL SERVICES, INC.$9,866,6592 awards
24GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC.$9,790,5518 awards
25EARTH RESOURCES TECHNOLOGY, LLC$9,594,3471 awards
26TIERRA RIGHT OF WAY SERVICES LTD$8,987,7982 awards
27HYDROGEOLOGIC, INC.$8,397,8455 awards
28HORSLEY WITTEN GROUP, INC.$7,944,38310 awards
29WSP USA ENVIRONMENT & INFRASTRUCTURE INC.$7,410,7317 awards
30CHENEGA RELIABLE SERVICES LLC$7,155,5102 awards
31SRC INC$7,125,3365 awards
32ENVIRONMENTAL MANAGEMENT SUPPORT, INC$6,816,9524 awards
33ENVIRONMENTAL MANAGEMENT & PLANNING SOLUTIONS LLC$6,439,1257 awards
34RURAL COMMUNITY ASSISTANCE CORPORATION$6,111,6591 awards
35TOEROEK ASSOCIATES, INC.$5,654,65011 awards
36PB&A/CSS JV, LLC.$5,239,2443 awards
37PACIFIC WESTERN TECHNOLOGIES, LTD.$5,155,6631 awards
38ALEUT TECHNICAL SERVICES, LLC$4,830,7453 awards
39INTEGRATED SYSTEMS SOLUTIONS, INC.$4,791,3191 awards
40SUSTAINABLE DESIGN CONSORTIUM, (SDC) INC$4,780,0001 awards
41RPI-CSS, LLC$4,592,9541 awards
42GENWEST SYSTEMS INC$4,406,4832 awards
43MABBETT & ASSOCIATES, INC.$4,253,18214 awards
44ABT GLOBAL LLC$4,139,8064 awards
45EDWARD HOLMES, INC.$4,106,2281 awards
46TDI-BROOKS INTERNATIONAL INC$3,923,5101 awards
47ONEIDA ENVIRONMENTAL, LLC$3,825,8172 awards
48VANASSE HANGEN BRUSTLIN INC$3,762,8934 awards
49STRAUGHAN ENVIRONMENTAL, INC.$3,714,0001 awards
50BOWHEAD ENTERPRISE, SCIENCE AND TECHNOLOGY, LLC$3,210,0441 awards
51GEOSYNTEC CONSULTANTS, INC.$3,007,6781 awards
52BLUE WORLD RESEARCH INSTITUTE INC$2,823,1402 awards
53DAWSON MCG, INC.$2,746,1101 awards
54SANCO LABORATORIES INC$2,586,3032 awards
55INDEPENDENT STRATEGIC MANAGEMENT SOLUTIONS INC$2,532,5183 awards
56CARDINAL POINT CAPTAINS, INC.$2,514,6152 awards
57SES INC.$2,481,8642 awards
58KONIAG OPERATIONS SERVICES LLC$2,473,5141 awards
59ASIR LLC$2,393,9581 awards
60ALLRED RESTORATION, INC.$2,387,7103 awards