| RANK |
FIRM |
|
| 2007 |
2006 |
|
TYPE OF FIRM |
|
1
|
1
|
CH2M Hill Ltd., Englewood,
Colo.† |
DES
|
|
2
|
3
|
Veolia Environnement-North America, Lombard, Ill.† |
OTH
|
|
3
|
2
|
Bechtel, San Francisco, Calif.† |
DES/CON
|
|
4
|
12
|
The Shaw Group Inc., Baton Rouge, La.† |
CON
|
|
5
|
4
|
Washington Group Int’l Inc., Boise, Idaho† |
CM/PM
|
|
6
|
5
|
URS Corp., San Francisco, Calif.† |
CSL
|
|
7
|
7
|
Tetra Tech Inc., Pasadena, Calif.† |
DES
|
|
8
|
8
|
Fluor Corp., Irving, Texas† |
CON
|
|
9
|
6
|
Parsons Corp., Pasadena, Calif.† |
DES
|
|
10
|
10
|
MWH Global Inc., Broomfield, Colo.† |
DES
|
|
11
|
14
|
Black & Veatch, Overland Park, Kan.† |
CON/DES
|
|
12
|
9
|
Earth Tech Inc., Long Beach, Calif. |
CSL
|
|
13
|
13
|
AECOM Technology Corp., Los Angeles, Calif.† |
DES
|
|
14
|
16
|
Jacobs Engineering Group Inc., Pasadena, Calif. |
DES/CON
|
|
15
|
11
|
Battelle, Columbus, Ohio† |
CON/CM/PM
|
|
16
|
15
|
CDM, Cambridge, Mass.† |
DES
|
|
17
|
24
|
Kiewit Corp., Omaha, Neb.† |
CON
|
|
18
|
17
|
Environ. Resources Management, Exton, Pa.† (1) |
CSL
|
|
19
|
18
|
ARCADIS, Highlands Ranch, Colo.† |
CON
|
|
20
|
21
|
SAIC, San Diego, Calif. (2) |
CSL
|
|
21
|
20
|
Layne Christensen Co., Mission Woods, Kan.† |
CON
|
|
22
|
19
|
The Walsh Group Ltd., Chicago, Ill.† |
CON
|
|
23
|
25
|
Golder Associates Corp., Atlanta, Ga.† |
CSL
|
|
24
|
27
|
AMEC, Philadelphia, Pa. |
CSL
|
|
25
|
28
|
Malcolm Pirnie Inc., White Plains, N.Y. |
CSL
|
|
26
|
30
|
HDR, Omaha, Neb.† |
DES
|
|
27
|
22
|
LVI Services Inc., New York, N.Y. |
CON
|
|
28
|
26
|
Weston Solutions Inc., West Chester, Pa.† |
CSL
|
|
29
|
31
|
Garney Holding Co., Kansas City, Mo.† |
CON
|
|
30
|
32
|
The Louis Berger Group Inc., East Orange, N.J.† |
CM/PM
|
|
31
|
35
|
MACTEC Inc., Alpharetta, Ga.† |
CSL
|
|
32
|
44
|
Stantec Inc., Edmonton, Alberta, Canada† |
DES/CSL
|
|
33
|
40
|
Alberici Corp., St. Louis, Mo.† |
CON
|
|
34
|
37
|
Conestoga-Rovers & Assocs., Niagara Falls, N.Y.† |
DES
|
|
35
|
36
|
Brown and Caldwell, Walnut Creek, Calif.† |
DES
|
|
36
|
34
|
Western Summit Constructors Inc., Denver, Colo. |
CON
|
|
37
|
33
|
Skanska USA Inc., Whitestone, N.Y.† |
CON
|
|
38
|
38
|
Sevenson Environmental services Inc., Niagara Falls, N.Y.† |
CON
|
|
39
|
**
|
TRC Cos. Inc., Lowell, Mass.† |
CSL/DES
|
|
40
|
43
|
PCL Construction Enterprises Inc., Denver, Colo.† |
CON
|
|
41
|
39
|
Pizzagalli Construction Co., South Burlington, Vt. |
CON
|
|
42
|
**
|
EQ-The Environmental Quality Co., Wayne, Mich.† |
OTH
|
|
43
|
69
|
Environmental Quality Management Inc., Cincinnati, Ohio† |
CON
|
|
44
|
45
|
ENVIRON, Arlington, Va.† |
CSL
|
|
45
|
61
|
Barnard Construction Co. Inc., Bozeman, Mont. |
CON
|
|
46
|
47
|
Parsons Brinckerhoff Inc., New York, N.Y.† |
DES
|
|
47
|
51
|
Burns & McDonnell, Kansas City, Mo. |
DES
|
|
48
|
48
|
Infiltrator Systems Inc., Old Saybrook, Conn. |
EQP
|
|
49
|
52
|
Wharton-Smith Inc., Sanford, Fla. |
CON
|
|
50
|
53
|
Carollo Engineers P.C., Phoenix, Ariz.† |
DES
|
