About the author George Rainer, PE, AICP, a principal in the firm of Flack+Kurtz, consulting engineers, has been involved in the infrastructure design of Roosevelt Island and Battery Park City, New York, including utilities supply, solid waste management, water supply and sewer systems. He also prepared energy master plans for the Grand Valley Urbanization Project, Colorado, and for college campuses in Tennessee, Massachusetts and New York. He has lectured at several colleges and developed the course on infrastructure at Pratt Institute. About the contributors Samuel I. Schwartz, PE, is Chief