1. Vice President, Hazen and Sawyer, 4011 Westchase Blvd., Raleigh, NC 27607 (corresponding author).
2. Professor, Dept. of Parks and Tourism Management, Jordan Hall 5118, Box 7106, NCSU Campus, Raleigh, NC 27695.
3. Senior Principal Engineer, Hazen and Sawyer, 4035 Ridge Top Rd., Suite 400, Fairfax, VA 22030.
4. Assistant Director, Dept. of Public Utilities of the City of Raleigh, 1 Exchange Plaza, Raleigh, NC 27601.