Mayor Kevin Johnson’s volunteer task force on Thursday continued its second session of challenging proposals presented by prospective developers of a new arena in Sacramento. The 12-member task force heard presentations from Thomas Enterprises, the Kamilos Group, Natomas ESC Partners and Tripp Development. The prospective developers explained their financing plans, among other issues. Task force member Mike Kvarme asked how much of Thomas Enterprises’ project financing would rely on obtaining federal funding. “It’s a large part of it,” said Suheil Totah, vice president of Thomas Enterprises. Totah also commented on the site’s location at the railyards in Downtown. Thomas Enterprises is