POET Bioprocessing — the largest producer of ethanol in the United States — operates an ethanol plant, pictured Oct. 16, near Shell Rock in Northeast Iowa. For three years, the plant violated a permit ...
The Iowa Department of Natural Resources said the POET ethanol plant rear Shell Rock (above) in northeast Iowa released excessive pollutants for years before POET noticed the problem and notified the ...
SHELL ROCK — An ethanol-producing facility in Northeast Iowa expelled excessive pollutants into the air for several years that can cause cancers and other health effects, according to the Iowa ...