meters apart (Rome Avenue ASR wells).??? In the ground water, mobilization of As, Fe, Mn, U and other metals are observed during ASR activities.??? Variables affecting this mobility include: 1) native and input water chemistry ???( DO, pH), 2) aquifer matrix chemistry/mineralogy, 3) input water - matrix contact time and number of cycle tests, and 4) site-specific hydrogeology/geochemistry.??? In