In evaluating bids for San Diego's sports arena site, city staff relied on the criteria outlined in the Surplus Land Act guidelines. Staff ranked teams based on the total number of proposed affordable residential units and the average affordability of the deed-restricted units, recommending the three highest ranked teams to continue in the city's negotiation process. Affordable units are defined by the state as units reserved for people making 80 percent or less of the area median income (AMI).