THE PERMITTEE WAS RE-ISSUED ITS DIRECT DISCHARGE CWA NPDES PERMIT ON 2/19/99, WHICH WAS DEVELOPED IN PART PURSUANT TO FEDERAL EFFLUENT GUIDELINES (40 CFR PART 430) AS AMENDED FOR THE PULP, PAPER AND PAPER BOARD INDUSTRY POINT SOURCE CATEGORY. THESE GUIDELINES ARE COLLECTIVELY KNOWN AS THE CLUSTER RULE . THIS AO PROVIDES AN IMPLEMENTATION SCHEDULE FOR COMING INTO COMPLIANCE WITH THE CLUSTER RULE .