The 5^th prize winner at the Ultrafine Particle Graduate Student Research Competition at Air quality Management District (AQMD) Ultrafine Particles conference held at Wilshire Grand Hotel, Los Angeles during April 30-May 02, 2006. The project was titled: “Online Measurement of Ultrafine Aggregate Number, Surface Area, and Volume Distributions”. The award is presented by Beatrice J. S. LaPisto-Kirtley, Mayor, City of Bradbury, and Governing Board Member, South Coast AQMD. The students received a cash prize of $500 each.