CH2M, earlier CH2M Hill, was an engineering company that provided consulting, design, construction, and operations services for corporations and governments.

[10] In June 2007, along with General Electric, the company was selected to build a $660 million gas-fired power plant in Queensland, Australia.

[13][14][15] In April 2009, a consortium led by the company was named program partner to oversee construction of the Crossrail project to expand London's transit system.

[16] On August 30, 2006, along with partners Mace Group and Laing O'Rourke, the company was selected as a supplier for the London 2012 Olympics.

[17][18][19] In June 2008, the United States Department of Energy selected a subsidiary of the company to manage the deconstruction and remediation of the Central Plateau on the Hanford Site in eastern Washington, one of the world's largest environmental cleanup projects, including shrinking the environmental footprint of the Hanford Site from 586-square-mile (1,520 km2) to 75 square miles (190 km2).

[22] Engineering News-Record identified two projects that may have contributed to CH2M's being bought out in December 2017: A combined-cycle power project, part of the Ichthys gas field development, which had lost CH2M $140 million in 2014, and the addition of a toll lane in Austin, Texas for the Central Texas Regional Mobility Authority, which had lost the company $121.3 million in 2014 due to delays caused by weather and staffing issues, among other things.

The sale was forced by the financial collapse of JA Jones Inc, its North American parent company and wholly owned subsidiary of the insolvent German construction conglomerate, Philipp Holzmann AG.

[27][28] In September 2007, the company acquired most of the components of VECO, an Alaska-based firm that specialized in services to the petroleum industry and had become embroiled in the Alaska political corruption probe.