AK STEEL OWNS AND OPERATES THE AK STEEL MANSFIELD WORKS, A SECONDARY STEEL PRODUCER (MINI-MILL) THAT USES SCRAP STEEL, METAL ALLOYS, AND OTHER ADDITIVES TO MANUFACTURE STAINLESS STEEL. SCRAP IS MELTED IN TWO ELECTRIC ARC FURNACES, ALLOYS ARE ADDED IN THE AOD OR LMF, AND THE MOLTEN METAL IS POURED TO MAKE SLABS THAT ARE COOLED AND ROLLED INTO COILS. AK STEEL HAS OWNED AN OPERATED THE MANSFIELD WORKS SINCE OCTOBER 1, 1999, WHEN IT PURCHASED AND MERGED WITH ARMCO INC HAD OWNED AND OPERATED THE MANSFIELD WORKS SINCE 1992. THIS CASE STEMS FROM AN INSPECTION THAT WAS PART OF REGION 5'S MINI-MILL INITIATIVE. THIS LITIGATION REFERRAL ALLEGES (I) THAT AK STEEL'S EFFLUENT DISCHARGES INTO ROCKY FORK CREEK EXCEEDED THE EFFLUENT AND TOXICITY LIMITS IN ITS NPDES PERMIT; AND (II) THAT AK STEEK ILLEGALLY STORED RCRA HAZAR- DOUS WASTE WITH WASTE CODE K061 WITHOUT A PERMIT IN AND AROUND THE LOADING AREA FOR THE STORAGE TANKS CONNECTED TO THE EAF BAGHOUSES.