Construction began in August on Sealaska Heritage Institute’s future arts campus in downtown Juneau. But they found contaminated soil, which may affect the institute’s goal to have it complete in time for Celebration next year . The site in downtown Juneau ought to be busy with construction work. Instead, earth movers sit idle inside the fenced-off site. “Believe me, it’s aggravating for me to look out the window and not see anything happening,” said Lee Kadinger, chief operating officer of