Agran supervised removal and clean-up of decades of toxic contamination and building of many of the Great Park's iconic features, including the Great Park Balloon and Carousel, the Palm Court and Arts Complex, the Farm + Food Lab, the South Lawn Soccer Complex, the huge North Lawn (the largest uninterrupted lawn in Southern California), and restoration and repurposing of historic World War II airplane hangars. Under Agran's leadership, the Great Park also began hosting popular events, including Cirque du Soleil, concerts, movies, air shows, regular farmers markets, and countless other community events, boosting attendance at the Great Park to nearly one million annual visitors. Under Agran's tenure, the City of Irvine and the Orange County Great Park also won a national U.S. Department of Energy competition to be the host venue for two U.S. Solar Decathlons, which were ultimately held at the Great Park in 2013 and 2015. Annual financial audits of the Great Park conducted from 2004 through 2010 consistently found that the project was properly managed and that all spending was properly authorized, with no significant irregularities or unaccounted-for funds.