Pros
ERM used to be the engineering leader in site investigation and remediation and contaminated site management. They enjoyed a good reputation for their skills and knowledge. Many of those experienced geologists are still around and most are very interested in sharing knowledge with junior staff and promoting an excellent product. However, the SIR and CSM service lines look like they are being phased out. Newer service offerings, (ex. information systems, EIA, sustainability, etc.) are not mature enough yet to draw a conclusion on quality and market eminence.
Cons
Very political and very closed-door leadership. There is absolutely no management training or mentoring so future partners are 'recognized' "the day they come in the door." Advancement appears to be based on political alignment and personality synergies more than on qualification or experience. "Partner-track" candidates are largely caucasian men. Lack of diversity in upper management appears to foster this status quo.