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Riverside Energy Park Environmental Statement Chapter 7: Air Quality VOLUME NUMBER: PLANNING INSPECTORATE REFERENCE NUMBER: EN010093 DOCUMENT REFERENCE: 06 6.1 May 2019 Revision 1 (Deadline 2) APFP Regulation 5(2)(a) Planning Act 2008 | Infrastructure Planning (Applications: Prescribed Forms and Procedure) Regulations 2009 Riverside Energy Park: Environmental Statement (ES) Chapter 7 – Air Quality Contents 7 Air Quality ......................................................................................................... 1 7.1 Introduction ........................................................................................... 1 7.2 Legislation, Policy, Guidance and Standards ........................................ 1 7.3 Consultation ........................................................................................ 14 7.4 Reasonable Worst Case Parameters Used for Assessment ............... 37 7.5 Assessment Methodology and Significance Criteria ........................... 39 7.6 Assumptions and Limitations............................................................... 57 7.7 Baseline Conditions and Receptors .................................................... 58 7.8 Embedded Mitigation .......................................................................... 71 7.9 Assessment of Likely Effects............................................................... 72 7.10 Cumulative Assessment ...................................................................... 86 7.11 Further Mitigation and Enhancement .................................................. 87 7.12 Residual Effects and Monitoring .......................................................... 88 7.13 Summary and Conclusion ................................................................... 88 7.14 References .......................................................................................... 89 Tables Table 7.1: IED Emission Limit Values (mg/Nm3) ........................................................ 3 Table 7.2: Best Available Techniques – Air Emission Levels (mg/Nm3) ..................... 4 Table 7.3: Medium Combustion Plant Emission Limit Values for Engines (mg/Nm3) . 6 Table 7.4: Relevant requirements of NPSs................................................................. 6 Table 7.5: Air Quality Objective Levels ..................................................................... 10 Table 7.6: Vegetation and Ecosystem Objectives (Critical Levels) ........................... 12 Table 7.7: EALs for the Protection of Human Health ................................................ 12 Table 7.8: EALs for the Protection of Vegetation and Ecosystems ........................... 14 Table 7.9: Summary of Key Consultation Responses in Relation to Air Quality ....... 15 Table 7.10: Risk Criteria for Dust Emission Magnitude ............................................ 42 Table 7.11: Sensitivity of the area to dust soiling effects on people and property .... 44 Table 7.12: Sensitivity of the area to human health impacts..................................... 45 Table 7.13: Sensitivity of the area to ecological impacts .......................................... 46 Table 7.14: Risk of Dust Impacts .............................................................................. 46 Table 7.15: Parameters of the buildings ................................................................... 48 Table 7.16: Source parameters for ERF ................................................................... 50 Table 7.17: Pollutant emission rates used in this Assessment ................................. 50 Table 7.18a: Deposition Velocities Used in Calculations .......................................... 52 Table 7.19: Source parameters for Biogas Engine ................................................... 53 Table 7.20: Impact Magnitude for changes in relation to the AQAL .......................... 55 Table 7.21: Impact descriptors relative to Ambient Air Quality for Annual Average Concentrations ......................................................................................................... 55 Chapter 7 – Page i Riverside Energy Park: Environmental Statement (ES) Chapter 7 – Air Quality Table 7.22: Impact descriptors relative to Ambient Air Quality for Short Term Impacts 56 Table 7.23a: Local Authority Automatic Monitoring Stations Close to the Proposed REP 58 Table 7.24a: Local Authority Monitoring NO2 Concentrations (2014 – 2017) ............ 59 Table 7.25a: Local Authority Monitoring PM10 concentrations (2014 – 2017) ........... 60 Table 7.26a: Local Authority Monitoring PM2.5 concentrations (2014 – 2017) .......... 61 Table 7.27a: DEFRA Background Map Estimates for Concentrations at the REP site (grid square 549000, and 180000) ........................................................................... 61 Table 7.28: Summary of background concentrations selected for use in the assessment .............................................................................................................. 62 Table 7.29a: Human Receptors within the vicinity of the Proposed REP ................. 64 Table 7.30: Terrestrial Biodiversity Receptors within the vicinity of the REP site ..... 66 Table 7.31a: Current Deposition Rates at the Specific Terrestrial Biodiversity Receptors 68 3 Table 7.32a: Baseline concentrations of NO2, PM10 and PM2.5 in 2017 and 2024g/m ) 71 Table 7.33: Summary of Construction and Decommissioning Risk for the REP Site and Main Temporary Construction Compounds ....................................................... 73 Table 7.34: Maximum Point of Impingement Concentrations with ERF Stack .......... 76 Table 7.35: Short Term Impacts at Higher Emission Rates ...................................... 79 Table 7.36: Summary of Construction Dust Impacts from Electrical Connection Construction and Decommissioning ......................................................................... 84 Table 7.37: Summary of Residual Effects ................................................................ 88 Document Reference 6.2 – Figures Figure 7.1 – Buildings Configurations Figure 7.2 – Windroses 2013-2017 Figure 7.3.1 – Human Health Receptor Locations Figure 7.3.2 – Human Health Receptor Locations Figure 7.4.1 – Ecological Receptor Locations Figure 7.4.2 – Ecological Receptor Locations Figure 7.5 – Nickel Concentration Contour Plot Figure 7.6 – Arsenic Concentration Contour Plot Figure 7.7 – Nitrogen dioxide Concentration Contour Plot Figure 7.8 – AD Plant Hourly Nitrogen Dioxide Figure 7.9 – AD Plant Annual Nitrogen Dioxide Figure 7.10 – AD Plant Daily Nitrogen Dioxide Figure 7.11 – Nitrogen deposition Figure 7.12 – Total Acid Deposition Document Reference 6.3 - Appendices Appendix C.1 – Traffic Modelling Appendix C.2 – Stack Modelling Appendix C.3 – Human Health Risk Assessment Chapter 7 – Page ii Riverside Energy Park: Environmental Statement (ES) Chapter 7 – Air Quality 7 Air Quality 7.1 Introduction This Chapter presents the findings of the assessment of the likely significant effects of the Proposed Development with respect to air quality. The purpose of this Chapter is to describe and evaluate the likely air quality impacts of the Proposed Development considering relevant national, regional and local guidance and regulations as well as relevant European Union (EU) guidance and directives. This Chapter has been prepared by Peter Brett Associates LLP (PBA). In accordance with the Infrastructure Planning (Environmental Impact Assessment) Regulations 2017 (as amended) (the Infrastructure EIA Regulations 2017), a statement outlining the relevant expertise and qualifications of competent experts appointed to prepare this Environmental Statement is provided in Appendix A.2. REP will have potential implications for local air quality principally from the flue gases emitted through the combustion processes from the Energy Recovery Facility (ERF) and Anaerobic Digestion facility. Furthermore, there will be emissions associated with the construction and demolition phases of the Proposed Development and the transport of materials to and from the REP site by river and road during both construction and operational phases. 7.2 Legislation, Policy, Guidance and Standards Legislation Ambient air quality is regulated through European Directives that set limit values on the concentrations of key pollutants. The most recent of these is the Air Quality Directive 2008/50/EC on cleaner air for Europe. This sets air quality limit values, target values and critical levels for a number of air pollutants established by the European Council for the Protection of Human Health, Vegetation and Ecosystems. The Ambient Air Directive (AAD) Limit Values are for sulphur dioxide (SO2), nitrogen dioxide (NO2), oxides of nitrogen (NOx), particulate matter (PM10 and PM2.5), lead (Pb), benzene (C6H6), and carbon monoxide (CO) are listed below in Table 7.1. The Air Quality Standards Regulations 2010 (Statutory Instrument, 2010, No.1001) (hereafter referred to as the Air Quality Regulations) implement the requirements of Directive 2008/50/EC. The Air Quality Regulations limit values are numerically the same as the National Air Quality Objective (NAQO) values but differ in terms of compliance dates, locations where they apply and the legal responsibility for ensuring that they are complied with. Chapter 7 – Page 1 Riverside Energy Park: Environmental Statement (ES) Chapter 7 – Air Quality The AAD limit values are applicable at all locations except: Where members of the public do not have access and there