Air Quality Modelling Results

Transcription

1 PORTISHEAD BRANCH LINE PRELIMINARY ENVIRONMENTAL INFORMATION REPORT VOLUME 4 APPENDIX 7. 4 Air Quality Modelling Results

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3 Table of Contents Section Page 1 Air Quality Modelling Results Receptor Modelled Results NSC Modelled Results BCC Modelled Results Table(s) Table 1.1: Annual Mean Modelled NO 2 Concentrations (µg m -3 ) at Receptors in NSC for the Base Year Table 1.2: Annual Mean Modelled PM 10 Concentrations (µg m -3 ) at Receptors in NSC for the Base Year (2013) and the Year of Opening (2021) for the (DM), (DS) Scenarios Table 1.3: Annual Mean Modelled NO 2 Concentrations (µg m -3 ) at Receptors in BCC for the Base Year Table 1.4: Annual Mean Modelled PM 10 Concentrations (µg m -3 ) at Receptors in BCC for the Base Year (2013) and the Year of Opening (2021) for the (DM) and (DS) Scenarios

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5 PORTISHEAD BRANCH LINE PRELIMINARY APPENDIX 7.4 SECTION 1 1 Air Quality Modelling Results 1.1 Receptor Modelled Results This appendix presents the adjusted nitrogen dioxide (NO 2) and particulate matter (PM 10) predicted concentrations at selected receptors in North Somerset District Council (NSDC) and Bristol City Council (BCC) for the base case (2013) and in the year of opening (2021) for the (without scheme) and (with scheme) scenarios. The difference in the predictions for the and represent the impact of the Portishead Branch Line (MetroWest Phase 1) Development Consent Order Scheme (the DCO Scheme) on air quality. 1.2 NSC Modelled Results Table 1.1 below shows modelled concentrations at receptors in NSC. No exceedances of the related air quality limit are predicted for any of the considered scenarios. The locations of the receptor sites are presented on Figure 7.3 in Volume 2 of the Preliminary Environmental Information Report (the PEI Report). Table 1.1: Annual Mean Modelled NO 2 Concentrations (µg m -3 ) at Receptors in NSC for the Base Year 2021 Annual Mean NO2 [Defra TG(16) Methodology] (µg m -3 ) 1-1 R R R R R R R R R R R R R R R R R R

6 APPENDIX 7.4 PORTISHEAD BRANCH LINE PRELIMINARY Table 1.1: Annual Mean Modelled NO 2 Concentrations (µg m -3 ) at Receptors in NSC for the Base Year 2021 Annual Mean NO2 [Defra TG(16) Methodology] (µg m -3 ) R R R R R R R R R R R R R R R R R R R R R R R R R

7 PORTISHEAD BRANCH LINE PRELIMINARY APPENDIX 7.4 Table 1.2 below reports PM 10 modelled concentrations at receptors in NSC for all the scenarios considered. No exceedances of the related air quality limit are predicted. Table 1.2: Annual Mean Modelled PM 10 Concentrations (µg m -3 ) at Receptors in NSC for the Base Year 2021 Annual Mean PM10 [Defra TG(16) Methodology] (µg m -3 ) R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R

8 APPENDIX 7.4 PORTISHEAD BRANCH LINE PRELIMINARY Table 1.2: Annual Mean Modelled PM 10 Concentrations (µg m -3 ) at Receptors in NSC for the Base Year 2021 Annual Mean PM10 [Defra TG(16) Methodology] (µg m -3 ) R R R R R R R R R R R R R

9 PORTISHEAD BRANCH LINE PRELIMINARY 1.3 BCC Modelled Results APPENDIX 7.4 Table 1.3 below shows modelled concentrations at receptors in BCC. No exceedances of the related air quality limit are predicted for any of the future scenarios considered. Table 1.3: Annual Mean Modelled NO 2 Concentrations (µg m -3 ) at Receptors in BCC for the Base Year 2021 Annual Mean NO2 [Defra TG(16) Methodology] R R R R R R R R R R R R R R R R R R

10 APPENDIX 7.4 PORTISHEAD BRANCH LINE PRELIMINARY Table 1.4 below reports PM 10 modelled concentrations at receptors in BCC for all the scenarios considered. No exceedances of the related air quality limit are predicted. Table 1.4: Annual Mean Modelled PM 10 Concentrations (µg m -3 ) at Receptors in BCC for the Base Year (2013) and the Year of Opening (2021) for the (DM) and (DS) Scenarios 2021 Annual Mean PM10 [Defra TG(16) Methodology] R R R R R R R R R R R R R R R R R R