ON MARCH 31, 2000, REGION 3 FORWARDED A REFERRAL TO DEPARTMENT OF JUSTICE REQUESTING THE FILING OF A CIVIL ACTION AGAINST AMOCO OIL COMPANY AND AMOCO CORPORATION AMOCO ) FOR PREVENTION OF SIGNIFICANT DETERIORATION ( PSD ) CLEAN AIR ACT ALLEGED VIOLATIONS. THE ALLEGED VIOLATIONS OCCURRED AT AMOCO'S YORKTOWN REFINERY LOCATED IN YORKTOWN, VIRGINIA. SPECIFICALLY, AMOCO IMPLEMENTED AT LEAST 2 CAPITAL IMPROVEMENT PROJECTS THAT RESULTED IN AN INCREASE IN SIGNIFICANT EMISSIONS OF SULFUR DIOXIDE, NITROGEN OXIDES AND/OR PARTICULATE MATTER WITHOUT OBTAINING A PSD PERMIT. THIS CASE IS PART OF A NATIONAL REFINERY INITIATIVE IN WHICH REGION 5 AND 6 ARE ALSO PARTICIPATING. THE REFERRAL REQUESTS INJUNCTIVE RELIEF THAT INCLUDES INSTALLATION OF THE BEST AVAILABLE CONTROL TECHNOLOGY ( BACT ).