1. Engineer II, AECOM, State College, PA.
2. Engineer I, AECOM, State College, PA.
3. Senior Technical Consultant, Michael Baker, Jr., Manassas, VA.
4. Science Practice Leader, AECOM, State College, PA (corresponding author).
5. Deceased February 4, 2012; formerly, Senior Scientist, AECOM, Atlanta, GA.