06/03/92: THE ORIGINAL COMPLIANCE ORDER WAS FILED ON 01/28/92. AFTER SEVERAL DISCUSSIONS WITH SINCLAIR, A REVISED COMPLIANCE ORDER WAS ISSUED ON 03/10/92. THE ESSENCE OF THE COMPLIANCE PROBLEM FOCUSED ON SINCLAIR'S VIOLATION OF THE CAA 113A/NSPS FOR EMISSION MONITORING OF SULFUR DIOXIDE IN COMBUSTION GASES OR, AS AN ALTERNATIVE, THE MONITORING OF HYDROGEN SULFIDE IN THE FUEL GASES.