EPA ENTERED INTO A 122(H)(1) AGREEMENT WITH CHICAGO INDUSTRI AL WASTE HAULERS TO RECOVER PAST RESPONSE COSTS AND TO RESOLVE THE LIABILITY OF CIWH FOR SUCH COSTS. EPA ALLEGED T HAT HAZARDOUS SUBSTANCES WERE PRESENT AT THE SITE AND THAT SUCH HAXARDOUS SUBSTANCES HAD BEEN OR WERE THREATENED TO BE RELEASED INTO THE ENVIRONMENT. EPA UNDERTOOK A RESPONSE ACTION AT THE SITE AND HAD INCURRED RESPONSE COSTS. CIWH HAS MADE MONTHLY PAYMENTS AND PAID IN FULL.