Air Operating Permit - Puget Sound Clean Air Agency

II. MONITORING, MAINTENANCE, AND RECORDKEEPING Permit No. 13120Expiration Date: September 12, 2013Page 219 of29lmore data points equally spaced over each one-honr period. Data recorded dnringperiods of CEMS breakdown, repair, calibration checks and zero and spanadjustments shall not be included in the data averages. An arithmetic or integratedaverage of all data may be used to calculate average emission rates. All excessemissions 18 shall be converted into Ib/MMBtu using the procednre at the bottom ofthis section. After conversion into units of the standard, the data may be rounded tothe sanle number of significant digits as used in the applicable subparts to specify theemission limit. [40 CFR 60.13(h), 611106]Boeing shall check zero (0% to 20% of the 200 ppm span value) and span (50% to100% of 200 ppm span value) calibration drifts of CEMS at least once daily inaccordance with the O&M Plan. All maintenance and calibration procednres shall berecorded in a log that shall be available for inspection. Zero and span for all CEMSother than COMS shall, at a minimunl, be adjusted whenever the 24-hour zero driftor 24-hour span drift exceeds 5%. [40 CFR 60.13(d)(1), 611106; [Letter datedOctober 11, 2001, D. Hardesty to F. Migaiolo, Request for Alternate Monitoring andAlternate Span Value Calibration for NOx CEMs at Three Boilers in the BoeingEverett facility.Facilities subject to the nitrogen oxide standards under 40 CFR 60.44b (EO 4.36),shall install, calibrate, maintain, and operate a continuous monitoring system formeasuring nitrogen oxides emissions discharged to the atmosphere and record theoutput of the system. [40 CFR 60.48b(b), 2/27/06]Boeing shall operate required CEMS and shall record data during all periods ofoperation except for during CEMS breakdowns and repairs. Data is to be recordedduring calibration checks and zero and span adjustments. [40 CFR 60 .48b( c),2/27/06]The I-hour average nitrogen oxide emission rates shall be expressed in ng/J orIbIMMBtu heat input and shall be used to calculate the average emission rates under/8 For the purposes of 40 CFR 60.48b(g)(!), which applies to Boilers No.4, No.5, and No.6, excess emissions aredefined as any calculated 30-day rolling average NOx emission rate, as determined under 40 CFR60.46b(e), which exceeds the applicable emission limit in 40 CFR 60. 44b(a) and (i).Boeing-Everett Permit, issued September 12. 2008; Administrative Amendment 3: October 10, 2012