Gary Sayers, the owner of Electroplating Services, is now in federal prison.
Sayers' company is the source of the green toxic liquid that poured onto a roadway in Madison Heights in late December.
Sayers will serve about 11 months -- after nearly two decades of flouting state and federal disposal laws for hazardous materials, including digging a pit in the basement of his factory where he dumped chemicals.
He leaves behind a building and property contaminated with chromium 6, arsenic and other toxic chemicals.
The EPA performed a limited cleanup in 2017. The agency recently did soil tests to learn more about the contamination.
Meanwhile, the city of Madison Heights has filed a civil suit against Sayers for a demolition order.
Sayers' attorney wants to delay the hearing. He says Sayers being in prison unfairly prejudices the defendant's ability to mount a defense.
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