"As recently as four or five years ago, Los Angeles International Airport was approaching its mandated cap of 70 million annual passengers. To relieve pressure on Los Angeles International Airport (LAX), LAWA pledged that ONT's traffic would rise from roughly 7 million annual passengers in 2005 to its cap of 30 million annual passengers by 2030. As a result, the generally growth-friendly city adopted an ambitious general plan update that would promote development to complement what would be one of the 25 busiest airports in the country."
"The general plan update, adopted earlier this year, assumes that heavy traffic at ONT will generate demand for development in the city. Ontario Planning Director Jerry Blum said that the rule of thumb in the aviation industry is that a city's airports create the demand for approximately one square foot of office space for every annual passenger. He said that the city's current supply of Class A space is sufficient for current traffic but that the city's plan calls for the several million more square feet that would complement a more crowded airport."
Thanks to Josh Stephens