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ENR’s annual top 500 design firms list is out. These rankings are based on revenue for design services in the previous calendar year. I was curious how the various firms that are strong in geotechnical / geological related services rank. I included firms that self-identified as geotechnical firms, as well as engineering firms that I know to have a strong geo emphasis. I’m sure there are some that I missed. I also included some of the major A&E firms that provide these types of services. I even included a few environmental firms. So in summary, it’s still a bit subjective on who is included. Without further ado, here is the list (along with their change in ranking relative to 2015):

• 1 – AECOM, Los Angeles, Calif. (No change from 2015)
• 3 – CH2M, Englewood, Colo. (+1)
• 5 – AMEC FOSTER WHEELER, Tucker, Ga. (+1)
• 7 – TETRA TECH INC., Pasadena, Calif. (No change from 2015)
• 9 – HDR, Omaha, Neb. (No change from 2015)
• 11 – WSP | PARSONS BRINCKERHOFF, New York, N.Y. (+5)
• 12 – ARCADIS NORTH AMERICA/CALLISONRTKL, Highlands Ranch, Colo. (+1)

[Editor] Click through for the rest of the Geo list! [/Editor]

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