When the oil industry began to boom in North Dakota, the lack of wastewater treatment plants was one of the biggest concerns for portable restroom business MonDak Portables. While the portable sanitation company sought solutions to its waste treatment issue, the state hustled to catch up on other housing and infrastructure projects.Founded in 2008 by Barb Rogers and Kathy Zent, Epping-based MonDak Portables was at the mercy of ever-increasing disposal fees and the knowledge that one day the plants wouldn’t accept loads from its business.Proactively, they prepared to switch to land application, a method they have used exclusively since 2012, when
