Mr. McDonald joined Carollo Engineers in 1989 and has extensive planning and design experience in the areas of watershed management, wastewater disinfection, biosolids treatment/reuse/disposal, chemical and biological wastewater treatment/reuse, air pollution control, and financial assessments. Steve holds a MS in business administration (finance) from California State University, Hayward; a BS in biology from Portland State University; and a BS in chemical engineering from Oregon State University.