Fires and explosions at chemical distribution plants in Iowa and Kansas eight years ago have led to a $1.1 million civil penalty for the plants’ owner, Barton Solvents Inc., The Des Moines Register reported. The proposed settlement would resolve multiple environmental complaints at five of Barton’s chemical blending and distribution facilities in Iowa, Wisconsin and Kansas, the U.S. Environmental Protection Agency and U.S. Justice Department said Monday. Barton, which accepted no liability with the settlement, said it does not agree with all the complaints. But it has agreed to an independent audit to clarify its obligations and ensure future compliance.