OU5 IS A PORTION OF THE SITE WHERE CONTAMINATION ASSOCIATED WITH DISPOSAL BY THE UNIVERSITY OCCURRED, SPECIFICALLY, 1,4-DIOXANE. THE REMEDY SELECTED IN THE ROD, WHICH WAS SIGNED ON SEPTEMBER 27, 2013, REQUIRES TREATMENT OF THE GROUNDWATER AT LOAD LINE 1 FOR 1,4-DIOXANE AND CLOSURE OF THE LANDFILL TO COMPLY WITH NEBRASKA CLOSURE AND POST-CLOSURE REGULATIONS. THE ESTIMATED COST OF THE REMEDIAL ACTION IS $5.4 MILLION.