“We have on the site some storm water lines, old ones, that when they’re below the groundwater table, contaminated groundwater can leak into those storm sewers and migrate to the river,” says Grant Trigger. He's the cleanup manager for the former General Motors properties in Michigan.
Trigger says they’ll spend the next three to four months replacing more than 3,600 feet of storm sewer lines.
Trigger says the old storm sewers will be capped to prevent the spread of PFAS.
Mahindra and the RACER trust, which oversees the former GM properties, executed a letter of intent last August.