AIR DISPERSION MODELLING FOR INTEL IRELAND LTD OF AMMONIA EMISSIONS Technical Report Prepared For Intel Ireland Ltd. Collinstown Industrial Estate Leixlip County Kildare Technical Report Prepared By Edward Porter PhD C Chem MRSC Our Reference EP/17/948AR01a Date Of Issue 09 March 2017 EPA Export 28062017:02:45:58
_ Document History Document Reference Original Issue Date EP/17/948AR01 07/04/2017 Revision Level Revision Date Description Sections Affected EP/17/948AR01a 09/04/17 Minor Edits All Sections Record of Approval Details Written by Checked by Signature Name Edward Porter Avril Challoner Title Director (Air Quality) Environmental Consultant Date 09/04/2017 09/04/2017 Page 2 of 11 EPA Export 28062017:02:45:58
_ EXECUTIVE SUMMARY were commissioned to carry out an air dispersion modelling study of emissions from the Intel Ireland facility in Leixlip, Co. Kildare. This report includes an assessment of the worstcase impact of emissions of ammonia from the facility based on a proposed increase to the volume flow of the Fab 242 ammonia exhausts (A257 A259, A27). Emission concentrations from the ammonia exhaust emission points have also been reduced to ensure compliance is maintained with the ambient air quality standards based on the most recent AERMOD version (version 16216r) and the most recent meteorological years (2012 2016). In summary, ambient levels of ammonia will remain in compliance with the ambient air quality standard based on the proposed changes to the Fab 242 ammonia exhaust volume flows and proposed updated emission concentrations for all ammonia exhaust emission points. Page of 11 EPA Export 28062017:02:45:58
_ CONTENTS Page EXECUTIVE SUMMARY 1.0 INTRODUCTION 5 2.0 MODELLING ASSESSMENT 5 2.1 Modelling Results 6.0 CONCLUSIONS 7 APPENDIX I 8 Page 4 of 11 EPA Export 28062017:02:45:58
_ 1.0 INTRODUCTION AWN Consulting have undertaken an assessment of the worstcase impact of emissions of ammonia from the facility based on a proposed increase to the volume flow of the Fab 242 ammonia exhausts (A257, A258, A259 and A27). The volume flow for the Fab 14 ammonia exhausts and Trimix emission points (which also emit ammonia) remains unchanged from that outlined in Licence P020704 Technical Amendment A. Emission concentrations from the ammonia exhaust emission points have also been reduced to ensure compliance is maintained with the ambient air quality standards based on the most recent AERMOD version (version 16216r). 2.0 MODELLING ASSESSMENT The current IE Licence for Intel Ireland Ltd (P020704) (revised in Technical Amendment A in July 2014) has outlined the following conditions for the ammonia exhausts as shown in Table 1 below: B.1 5 Ammonia Exhausts Emission Point Reference Location: Minimum discharge Maximum Volume to be No. height: emitted (Nm /hr) A158, A159, A160, A161 FAB 14 Ammonia Exhausts 77m O.D. 41,000 (each) Note 1 A257, A258, A259, A27 FAB 242 Ammonia Exhausts 82m O.D. 56,000 (each) Note 2 Note 1: Note 2: Where all four Fab 14 ammonia exhausts are in operation the combined volume shall not exceed 12,000Nm /hr. Where all four Fab 242 ammonia exhausts are in operation the combined volume shall not exceed 168,000Nm /hr. For the Emission Point Reference Nos. above, the following Emission Limit Values apply. Parameter Emission Limit Value Note Ammonia.5 mg/m Note 1 5 mg/m Note 2 Note 1: Where all four ammonia exhausts are in operation at Fab 14 or Fab 242 an emission limit of.5 mg/m shall apply. Note 2: Where less than four ammonia exhausts are in operation at Fab 14 or Fab 242 an emission limit of 5 mg/m shall apply. Note : For the purposes of determining compliance with the emission limit values, emission concentrations across the active emission points for FAB 14 and the active emission points for FAB 242 may be averaged. No one emission point shall have an ammonia concentration greater than 14mg/m. Table 1 IE Licence P020704 (including Technical Amendment A) In Relation To Licence Conditions for the Ammonia Exhausts Based on current measured volume flows, it is requested that the allowable maximum volume flows be increased to those values outlined in Table 2 for the Fab 242 ammonia exhausts in order to better reflect the volumetric flows and concentrations from the Fab 24 2 ammonia exhaust system. Fab 14 ammonia exhaust volume flows remain unchanged. Proposed Change Below; B.1.5 Ammonia Exhausts Emission Point Reference Location: Minimum discharge Maximum Volume to be No. height: emitted (Nm /hr) A158, A159, A160, A161 FAB 14 Ammonia Exhausts 77m O.D. 41,000 (each) Note 1 A257, A258, A259, A27 FAB 242 Ammonia Exhausts 82m O.D. 65,000 (each) Note 2 Note 1: Note 2: Where all four Fab 14 ammonia exhausts are in operation the combined volume shall not exceed 12,000Nm /hr. Where all four Fab 242 ammonia exhausts are in operation the combined volume shall not exceed 195,000Nm /hr. Page 5 of 11 EPA Export 28062017:02:45:58
_ For the Emission Point Reference Nos. above, the following Emission Limit Values apply. Table 2 Parameter Location: Emission Limit Value Note 5 Ammonia FAB 14 Ammonia Exhausts 2.5 mg/m Note 1.5 mg/m Note Ammonia FAB 242 Ammonia Exhausts 2.0 mg/m Note 2 2.5 mg/m Note 4 Note 1: Where all four ammonia exhausts are in operation at Fab 14 an emission limit of 2.5 mg/m shall apply. Note 2: Where all four ammonia exhausts are in operation at Fab 242 an emission limit of 2.0 mg/m shall apply. Note : Where less than four ammonia exhausts are in operation at Fab 14 an emission limit of.5 mg/m shall apply. Note 4: Where less than four ammonia exhausts are in operation at Fab 242 an emission limit of 2.5 mg/m shall apply. Note 5: For the purposes of determining compliance with the emission limit values, emission concentrations across the active emission points for FAB 14 and the active emission points for FAB 242 may be averaged. No one emission point shall have an ammonia concentration greater than 10 mg/m from FAB 14 and greater than 7 mg/m from FAB 242. Proposed Changes to IE Licence P020704 (including Technical Amendment A) In Relation To Licence Conditions for the Ammonia Exhausts In the air dispersion model it has been assumed that for all other emission points, the facility was operating at the maximum emission concentrations and volume flows as set out in IE Licence P0207_04 (including Technical Amendment A) as shown in Appendix I. Source Information Source information including emission release heights, volume flows (except where indicated above), locations and stack diameters are per the facility s IE Licence P0207_04 and Technical Amendment A. Table A1 summarises the emission concentrations used in the model. 2.1 Modelling Results Updated modelling was undertaken for the scenarios described in Table A1 for both the shared redundancy (all four ammonia exhaust emission points operating in each fab) and the duty (less than four ammonia exhaust emission points operating in each fab) scenarios and compared to the ambient air quality standards. The highest Ground Level Concentration (GLC) (including background concentrations) has been predicted for direct comparison with the derived ambient air quality guidelines. Table A2 details the GLC based on emissions at the emission limits indicated in Table A1 for the shared redundancy scenario whilst Table A details the GLC based on emissions at the emission limits indicated in Table A1 for the duty scenario. For direct comparison with international standards, the 1hour, 24hr, 99 th percentile of onehour concentrations and annual averages have been calculated for the location with the highest predicted concentration. All other locations beyond the site boundary will be lower than the reported values. Overall, the results show, based on updated Fab 242 volume flows and revised Fab 14 and Fab 242 ammonia exhaust emission concentrations that all results remain in compliance with all relevant ambient air quality standards. Compared to the existing licenced emissions, the predicted GLC s are essentially unchanged for the proposed amendment. Year 2016 annual mean ammonia concentration contour plot for the proposed shared redundancy scenario is shown in Figure 1..0 CONCLUSIONS AWN Consulting have undertaken an assessment of the worstcase impact of emissions of ammonia from the facility based on a proposed increase to the volume flow of the Fab 242 ammonia exhausts (A257, A258, A259 and A27). Emission concentration limits from all ammonia exhausts were reduced to ensure compliance is maintained with the Page 6 of 11 EPA Export 28062017:02:45:58
_ ambient air quality standards based on the most recent AERMOD version (version 16216r) and the most recent meteorological years (2012 2016). In summary, ambient levels of ammonia remain in compliance with the ambient air quality standard, based on the proposed changes to the Fab 242 ammonia exhaust volume flows and proposed reduction in emission concentration limits. Page 7 of 11 EPA Export 28062017:02:45:58
APPENDIX I Table A1 Summary Of Source Information From Emission Points At Intel Ireland Ltd Based On An Increase In Volume Flow To The Fab242 Exhausts & Reduction of Fab14 and Fab242 Emission Concentration Limits. Model Scenario No. of Stacks Emitting Ammonia Flow Rate Emission Concentration Total Emission Rate (g/sec) Fab 10 Fab 14 Fab 24 Fab 242 Proposed Licence Scenario Ammonia (Shared Redundancy) Proposed Licence Scenario Ammonia (Duty Scenario) 0 4 0 6 0 0 5 Fab242 Exhausts 48,750 Nm /hr All other emission points per IE Licence Fab242 Exhausts 65,000 Nm /hr All other emission points per IE Licence Fab14 Exhausts 2.5 mg/nm Fab242 Exhausts 2.0 mg/nm All other emission points per IE Licence Fab14 Exhausts.5 mg/nm Fab242 Exhausts 2.5 mg/nm All other emission points per IE Licence 0.427 0.488 Page 8 of 11 EPA Export 28062017:02:45:58
Table A2 Model Scenario Predicted Ammonia GLCs Based On The Shared Redundancy Scenario For The Proposed Scenario. Year No. of Exhaust Units Emitting NH Flow Rate Emission Fab Fab Fab Fab Fab Trimix Concentration 10 14 241 24B 242 Max 1Hr (1,5) 99 th %ile of 1 hr (2,5) 24Hr (4,5) Ann (1,,5) Proposed Licence Scenario 2012 201 2014 2015 2016 4 4 2 Fab14 Exhausts 2.5 mg/nm 75.7 22.2 15.0 2.8 4 4 2 Fab 242 Exhausts 74. 15.7 11.9 2.9 Shared Redundancy 2.0 mg/nm for Fab 14 and Fab 4 4 2 242 ammonia 60.4 15.2 14.9.0 Two Trimix (A256A & exhausts. A256B) volume flow 4 4 4 4 2 2 7,000 Nm /hr each at concentration of 60 mg/nm 70.5 65. 16.5 16.1 11.2 12.5 2.9.0 All concentrations in g/m unless stated otherwise (1) UK Environment Agency EALs (2) Danish Cvalue () UNECE Critical Value For The Protection Of Vegetation (4) WHO Standard For The Protection Of Vegetation. (5) Background concentration of 0. g/m for annual mean and 0.6 g/m for 24hr and 1hr means. Relevant International Standard 2,500 (1) 00 (2) 270 (4) (), 180 (1) Page 9 of 11 EPA Export 28062017:02:45:58
Table A Model Scenario WorstCase Predicted Ammonia GLCs Based On The Duty Scenario. Year No. of Exhaust Units Emitting NH Flow Rate Emission Fab Fab Fab Fab Fab Trimix Concentration 10 14 241 24B 242 Max 1Hr (1,5) 99 th %ile of 1 hr (2,5) 24Hr (4,5) Ann (1,,5) Proposed Licence Scenario 2012 201 2014 2015 2016 2 Fab 14 Exhausts 75.8 22.1 15.4 2.8 2.5 mg/nm Fab 242 Exhausts Duty Operation for 2.5 mg/nm Fab 14 and Fab 24 70. 16. 11.7 2.8 2 2 2 2 ammonia exhausts. Two Trimix Exhausts (A256A & A256B) volume flow 7,000 Nm /hr each at concentration of 60 mg/nm 60.1 71. 69.5 17.8 16.8 18.4 15.8 11.1 1.7.0.0 2.8 Relevant International Standard 2,500 (1) 00 (2) 270 (4) (), 180 (1) All concentrations in g/m unless stated otherwise (1) UK Environment Agency EALs (2) Danish Cvalue () UNECE Critical Value For The Protection Of Vegetation (4) WHO Standard For The Protection Of Vegetation. (5) Background concentration of 0. g/m for annual mean and 0.6 g/m for 24hr and 1hr means. Page 10 of 11 EPA Export 28062017:02:45:58
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