UNOCAL CORPORATION'S UREA & AMMONIA PLANT WAS FOUND IN VIOLATION OF NSPS SUBPART D WHEN IT FAILED TO NOTIFY OF THE CONSTRUCTION OF THE AUXILIARY SECTION OF THE AMMONIA PLANT 4 PRIMARY REFORMER AND FAILED TO CONDUCT PERFORMANCE TEST FOR NOX AND PARTICULATE. IN VIOLATION OF ALASKA SIP BY FAILURE TO COMPLY WITH PERMIT CONDITIONS TO OPERATE FOR OPTIMAL CONTROL OF AIR CONTAMINANTS. FAILED TO APPLY FOR PSD PERMIT, CONDUCT BACT ANALYSIS, IMPLEMENT BACT, CONDUCT SOURCE IMPACT ANALYSIS AND OBTAIN PSD PERMIT WHEN IT MODIFIED THE UREA PRILL TOWER AND INCREASED PARTICULATE EMISSIONS.