VULCAN MATERIAL COMPANY IS SUBJECT TO RCRA ENFORCEMENT DUE TO FAILURE TO COMPLY WITH REVISED WISCONSIN REGULATORY REQUIREMENTS. VULCAN HAD INITIALLY BEGUN CLOSURE IN AC- CORDANCE WITH PRE JUNE 1985 WISCONSIN WASTE PILE AND CON- TAINER STORAGE FACILITY CLOSURE REQUIREMENTS. HOWEVER IN JUNE 1985 THE WISCONSIN REGULATIONS WERE REVISED, SUBSE- QUENTLY IMPOSING STRICTER REQUIREMENTS. VULCAN DID SUB- MIT A REVISED CLOSURE PLAN, BUT THIS PLAN WAS INADEQUATE, SINCE IT WAS ESSENTIALLY THE SAME AS THE PRE 1985 PLAN. VULCAN HAS ALSO PETITIONED FOR DELISTING OF THE SOIL BE- NEATH ITS WASTE FILE AND STORAGE AREA, AND INSISTS NO AC- TION BE TAKEN UNTIL THE DELISTING IS RESOLVED. USEPA SEEKS CLOSURE IN ACCORDANCE WITH CURRENT REQUIREMENTS.