JACKSON, MI (WHTC) - Consumers Energy officials say that have spent over 1.5 billion dollars on clean air initiatives at their Campbell power plant in Port Sheldon Township, responding to a report from an environmental group released yesterday naming that facility as the largest source of carcinogenic metal emissions in the US. A 2011 EPA study claims that the coal-fired plant put out nearly 87 hundred pounds of toxins, the most among 10 surveyed.