A group of 5 graduate and undergraduate students join our team for one semester as part of the graduate course “Design for Sustainable Communities”. The student team focused on sustainable waste disposal for the small amount of arsenic-laden sludge produced in ECAR (all arsenic remediation treatments result in arsenic-laden waste, and ECAR is no exception). They researched the costs, strengths, and potential barriers for several different disposal methods, including embedding the waste as filler into concrete for use in infrastructure development. They conducted the US EPA standard TCLP test on concrete with our waste inside – and found no detectable arsenic leakage!