Travel plays a large part in the impact of an event. Homecoming 2013 featured a game between the UA and UCLA, while in 2012 the game was against University of Colorado Boulder. University of Colorado is much further away from Tucson than Los Angeles is. Please note that the increase in food related impacts for 2013 is due to higher precison data collection in 2013 made possible through collaboration with the University of Arizona Dining Services.
Next, we confirmed that the football stadium and tailgate had the largest impacts associated with Homecoming. Auxilary events, although small in terms of overall impact are still an important part in making large events as a whole more sustainable.
Food and materials are areas that can be adjusted easily. Auxilary event impacts are largely driven by these areas and thus are a candidate for future initiatives.
The project team also found that travel and accommodations were the major drivers in the environmental impact. This is difficult to change because it is largely something that only attendees can control although awareness initiatives can play a part in promoting alternative transportation intitiatives or green initiatives at hotels as was done at Homecoming 2013.