ST LOUIS – What’s a utility company to do when its landfill fills up? Build another landfill on top of it.
St. Louis-based utility company Ameren has run out of room for ash byproducts from its Rush Island and Meramec coal plants, the St. Louis Post-Dispatch reports. The 110-acre, 80-foot-deep ash pond at Rush Island has nearly filled up, as has the ash waste pond at Meramec.
Ameren proposed to the Missouri Department of Natural Resources that the company build new ash landfills on top of the existing ash ponds after covering them with clay and synthetic liners. The ash would be piled up 100 feet high, and just enough water would be added to allow the ash to harden. An Ameren official said similar storage sites have been used in Illinois, Ohio and Indiana.