This document provides a summary of an ethnographic study of the former U.S. Bureau of Mines Twin Cities Research Center property in Hennepin County, Minnesota. The study identified Coldwater Spring on the property as culturally significant to Dakota and Ojibwe peoples. Interviews found that the spring is associated with Dakota creation beliefs and ceremonies requiring pure spring water. The study recommends Coldwater Spring as eligible for listing on the National Register of Historic Places as a traditional cultural property. It also reports that a Dakota tribe considers the spring to be a Sacred Site.