RESPONDENT VIOLATED THE GENERAL PRETREATMENT REGULATIONS, 40 CFR 403.6E BY FAILING TO PROPERLY CALCULATE AND APPLY THE COMBINED WASTESTREAM FORMULA TO ITS WASTE STREAMS REGULATED BY CATEGORICAL STANDARDS AND BY FAILING TO SEEK AND RECEIVE WRITTEN APPROVAL BY THE CONTROL AUTHORITY FOR USE OF THESE ALTERNATIVE LIMITS.
RESPONDENT VIOLATED 40 CFR PART 464 METAL MOLDING AND CASTING REGULATIONS ON MORE THAN ONE OCCASION.