Mr. Karam joined Carollo Engineers in 1988 and has over 20 years of experience as a sanitary engineer in areas such as preliminary, primary, and secondary treatment, solids handling, and hydraulics. He has worked extensively in the area of biological nutrient removal at wastewater treatment facilities. Walid holds a MS in sanitary engineering from the University of California, Berkeley and a BS in civil engineering from the American University of Beirut, Lebanon.