Local citizens and scientists have amassed large amounts of information on Ann Arbor’s 1,4-Dioxane plume. Locally sourced information has been invaluable since University of Michigan student Dan Bicknell first discovered the plume. It has continued with 23 years of data collection by Roger Rayle of Scio Residents for Safe Water. Has the information been put to good use? Has it informed decision-makers? In this installment of WEMU’s “The Green Room,” Barbara Lucas continues her exploration of this ongoing issue.