Lawyers representing companies that operate process facilities, such as refineries, electricity-generating plants or chemical-manufacturing facilities, face special challenges when overseeing preservation and production of electronically stored information (ESI).

Process facilities generate process data, which includes measurements of fluid temperatures at hundreds of locations in a single facility, pressures inside vessels and pipes, flow rates and similar information. These facilities also generate and store vibration measurements taken by the maintenance group, laboratory results of samples that can be taken at numerous locations within the process, and readings taken by the environmental section.