LITTLETON, Colo. The vacant lot at Santa Fe Drive and Mineral Avenue in Littleton is one of the last large undeveloped pieces of land in Littleton that could soon be the site of 1st Street Farms.Football legend, former Bronco and proud Colorado resident Peyton Manning is partnering with Denver-based Gustamo Group on the project named after, and inspired by, the street he grew up on. WATCH: Denver7's Danielle Kreutter talks with leaders and commu…