MOBILE VIOLATED THE S02 EMMISSION LIMITIN THE PSD PERMIT. THE PSD PERMIT LIMITS MOBIL'S EMMISSIONS OF SO2 TO 1.25 TPY. MOBIL WAS EMITTING 71.25 TONS PER YEAR OF SO2 FROM THE FACILITY ON A TWELVE MONTH ROLLING AVERAGE. IN ADDITION, MOBILE FAILED TO OPERATE THE THERMO COUPLE INSTALLED TO MONITOR THE FLARE'S PILOT LIGHT.