Gregory J. Broughton, a Stanford MBA fascinated by the economic implications of the environmental movement, founded PCR Services Corporation in 1974 when relatively new state and federal environmental legislation—such as the California Environmental Quality Act (CEQA), National Environmental Policy Act (NEPA), Clean Air Act, Clean Water Act, etc.—was still in the throes of implementation. In the face of this newly emergent environmental concern and associated regulation, a vision for PCR emerged: establishment of an environmental think tank generating research to better understand these environmental conflicts.

With scarce available funding for such inquiries, PCR leveraged its vision and expertise for commercial success in the preparation of documents pursuant to CEQA and NEPA.

Over the years, the public’s interest in environmental issues and rightful insistence on better analysis and understanding drove the need for ever increasing technical depth. PCR expanded by developing a broad set of practices in place, each with the mission of leading our clients to understanding and solving the environmental challenges they face.

"On February 29, 2016, PCR joined forces with ESA. ESA PCR, as we will now be known, expands our technical resources with more than 400 experts, greater geographic reach throughout the West and Gulf Coasts, and new expertise in airports, water science, environmental hydrology, and applied ecology services."