CH2M Hill, a global consulting, design, construction and operations firm, was ranked the No. 1 U.S. environmental firm by the Engineering News-Record’s Top 200 Environmental Firms list.
URS and Veolia Environment North America retained their 2012 spots after being ranked the No. 2 and No. 3 companies, respectively. The remaining top 10 included Tetra Tech, Bechtel, Energy Solutions, AECOM Technology, MWH Global, Golder Associates and Clean Harbors.