1. Environmental Engineer, Khatib & Alami-Consolidated Engineering Company, Dresstra Bldg., P.O. Box 14-6203, Jnah, Beirut, Lebanon (corresponding author).
2. Senior Manager, Khatib & Alami-Consolidated Engineering Company, Dresstra Bldg., P.O. Box 14-6203, Jnah, Beirut, Lebanon; Part-Time Lecturer, Dept. of Civil and Environmental Engineering, Beirut Arab Univ., BAU Bldg., P.O. Box 11-5020, Riad El Solh, Beirut, Lebanon.