A mysterious greenish liquid that forced lane closures after it seeped onto a Michigan interstate Friday allegedly came from a closed electroplating business whose owner is currently serving a year in federal prison for operating an unlicensed hazardous waste storage facility. Federal agencies had been called to investigate the strange oozing liquid pouring onto I-696 in Madison Heights — a suburb of Detroit — which they found to be the chemical hexavalent chromium, Michigan State Police said on Twitter on Saturday. […] The Michigan Department of Environment, Great Lakes, and Energy (EGLE) said in a statement that crews had spent...