During her tenure with Partner Colorado Credit Union, Sundie created the Safe Harbor Private Banking system in an effort to remove marijuana-derived cash from the community. Her institution now banks roughly $100 million a month for cannabis businesses, including ancillary companies. Sundie’s firm banks a 35% market share of the Colorado marijuana industry. In 2016, she wrote “Navigating Safe Harbor: Cannabis Banking in Uncertain Times” to offer banking guidance to marijuana companies.