THIS REFERRAL SEEKS TO ADDRESS THOUSANDS OF VIOLATIONS THAT OCCURRED AT HAYDEN STATION FROM 7/93 THROUGH 9/95 AND WHICH WERE REFERENCED IN A NOTICE OF VIOLATION ISSUED BY EPA TO THE RESPONDENT ON 1/18/96. THE VIOLATIONS ARE SUPPORTED BY A METHOD 9 VISUAL OBSERVATION CONDUCTED ON 7/27/93 WHICH MEASURED THE OPACITY OF THE PLUME FROM UNIT 1 AT 40.8%, AND BY CONTINUOUS EMISSION MONITOR(CEM) DATA FOR BOTH UNITS OB- TAINED FROM PUBLIC SERVICE CO. EPA SEEKS PENALTIES AND IN- JUNCTIVE RELIEF TO REQUIRE THE REPLACEMENT OF THE ESPS WITH FABRIC FILTER DUST COLLECTORS- ALSO KNOWN AS BAGHOUSES. A PENALTY OF $3,684,999 WAS PROPOSED. ECONOMIC BENEFIT WAS CALCULATED TO BE $26,237,666.