In accordance with the South Coast Air Quality Management District's regional clean air-quality requirements, Caltech is conducting a mandatory survey of employee commute modes for the week of October 10, 2011, through October 14, 2011. Those who complete their surveys by 5 p.m. on Monday, October 31, will be entered in a drawing to win a $100 gift card. This simple online survey takes only about two minutes. Please click here to complete your survey. Choose "off" if you were not scheduled to work. If you selected vacation, sick, or a compressed work schedule, you must still enter the time you would have come to work.