Detroit police and state environmental regulators are separately investigating two companies believed to have together filled hundreds of Detroit demolition sites with toxic dirt, threatening to cost the city millions in cleanup, Mayor Mike Duggan announced at a Dec. 22 news conference with just over a week left in office. An “intensive” and ongoing criminal investigation into potential fraud by Detroit-based Gayanga Co. has identified 49 demolition sites where the contractor may have used toxic dirt, in addition to 58 the city says it already found contaminated, Detroit Police Deputy Chief Kari Sloan said. Duggan said he requested the police investigation in September after the Detroit Office of the Inspector General found the contractor may have intentionally used backfill from unapproved sources. Check the link in our bio for more. #detroit #michigan #mayorduggan #mikeduggan #contamination #dirt #demolition #demolitionsites #toxic #toxicdirt mikeeduggan michaeleduggan gayangaco