THIS CASE INVOLVES VIOLATIONS OF THE NEW SOURCE PERFORMANCE STANDARDS (NSPS) FOR INDUSTRIAL-COMMERCIAL-INSTITUTIONAL STEAM GENERATING UNITS, 40 C.F.R. PART 60, SUBPART DB, AT A PETROLEUM REFINERY IN MCPHERSON, KANSAS. SPECIFICALLY, NATIONAL COOPERATIVE REFINERY ASSOCIATION ( NCRA ) FAILED TO INSTALL CONTINUOUS EMISSION MONITORING SYSTEMS ON TWO AFFECTED FACILITIES A THE REFINERY, IN VIOLATION OF 40 C.F.R. SECTION 60.48B(B). SUBPART DB OF THE NSPS REGULATIONS APPLIES TO EACH STEAM GENERATING UNIT (AFFECTED FACILITY) THAT COMMENCES CONSTRUCTION, MODIFICATION, OR RECONSTRUCTION AFTER JUNE 19, 1984, AND THAT HAS A HEAT INPUT CAPACITY FROM FUELS COMBUSTED IN THE STEAM GENERATING UNIT OF GREATER THAN 29 MW (100 MILLION BTU/HOUR). SECTION 60.44(E) ESTABLISHES A LIMIT ON THE EMISSION OF NITROGEN OXIDES (NOS) FROM ANY AFFECTED FACILITY THAT SIMULTANEOUSLY COMBUSTS COAL, OIL, OR NATURAL GAS WITH BYPRODUCT/WASTE. SECTION 60.48B(B) REQUIRES THAT THE OWNER OR OPERATOR OF AN AFFECTED FACILITY SUBJECT TO THE NOX LIMITS SET FORTH IN SECTION 60.44B SHALL INSTALL, CALIBRATE, MAINTAIN AND OPERATE A CONTINUOUS MONITORING SYSTEM FOR MEASURING NOX EMISSIONS FROM THE AFFECTED FACILITY. BASED ON INFORMATION OBTAINED BY THE REGION FROM NCRA, NCRA HAS TWO AFFECTED FACILITIES SUBJECT TO SUBPART DB A THE MCPHERSON PLANT -- BOILERS SB-16 AND