Shiras Steam Plant has 5 groundwater monitoring wells, 2 of which have been polluted above federal advisory levels based on samples collected between July 19, 2017 and October 17, 2019. Groundwater at this site contains unsafe levels of lead.Site description
Marquette Board of Light & Power’s Shiras Steam Plant was a three-unit coal-fired power plant that was first online in 1967. The plant was located near Lake Superior in Marquette, Michigan with a total capacity of 77.5-MW. The facility was retired in June 2018. The Holding Pond located north of the station is regulated under the CCR rule. It is composed of 5 cells which are enclosed by steel sheet pile walls.