UNILATERAL ADMINISTRATIVE ORDER ISSUED UNDER SECTION 106 OF CERCLA. THIS ORDER PERTAINS TO PROPERTY LOCATED AT 3100 MICHIGAN STREET, HAMMOND, INDIANA (THE COLUMBIA AVENUE SPILL SITE). THIS ORDER REQUIRES THE RESPONDENT TO CONDUCT REMOVAL ACTIVITIES DESCRIBED HEREIN TO ABATE AN IMMINENT AND SUBSTANTIAL ENDANGERMENT TO THE PUBLIC HEALTH, WELFARE OR THE ENVIRONMENT.