Marshalltown East and West Closed Landfills has 16 groundwater monitoring wells, 10 of which have been polluted above federal advisory levels based on samples collected between September 01, 2010 and September 04, 2014. Groundwater at this site contains unsafe levels of manganese, boron, cobalt, beryllium and sulfate.Site description
Interstate Power and Light Company's Marshalltown East and West Closed Landfills are located northeast of Marshalltown, Iowa. The site served as a limestone quarry before receiving ash from the Sutherland Power Station until the 1990's. According to the site's 2013 annual groundwater quality report, shallow groundwater beneath site flows to the south and west of the west landfill and radially from the east landfill. Deeper groundwater beneath the site generally flows from north to south.