Uniper Technologies Uniper Technologies Limited, Technology Centre, Ratcliffe-On-Soar, Nottinghamshire, NG11 0EE T+44 (0) 115 936 2900
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Uniper Technologies Uniper Technologies Limited, Technology Centre, Ratcliffe-on-Soar, Nottinghamshire, NG11 0EE T+44 (0) 115 936 2900 www.uniper.energy UNRESTRICTED UTG/20/PMP/489/R Revision 2 Job No: 2122.C00461.001 February 2021 AIR QUALITY ASSESSMENT FOR THE PROPOSED EMERGE CENTRE AT RATCLIFFE-ON-SOAR (PERMITTING) prepared for DR A READ, REDEVELOPMENT MANAGER, RATCLIFFE-ON-SOAR by V Kulambi & S J Griffiths SUMMARY Uniper is proposing building an energy recovery facility, the East Midlands Energy Re- Generation (EMERGE) Centre, on the Ratcliffe-on-Soar power station site. An air dispersion modelling study has been undertaken to evaluate the significance of any air quality effects that may arise from the Installation. Where it was necessary to make assumptions and approximations, a worst-case approach has been adopted to ensure that the modelled concentrations are likely to be overestimates rather than underestimates. This study concludes that no human health based ambient air quality standards or guidelines are predicted to be exceeded due to emissions from the Installation and hence there will be no significant adverse effects on human health. This study also concludes that there will be no significant adverse effects on the sensitive features at local ecological sites due to emissions from the Installation. Prepared by Approved for publication Master copy signed by V Kulambi & S J Griffiths (12/02/2021) V Kulambi S J Griffiths Environmental Compliance Technical Head Environmental Sciences & Climate Change Registered office Compton House, 2300 The Crescent, Birmingham Business Park, Birmingham, B37 7YE. Registered in England and Wales No: 2902387. UNRESTRICTED This document was prepared by Uniper Technologies Limited. Neither Uniper Technologies Limited, nor any person acting on its behalf, makes any warranty, express or implied, with respect to the use of any information, method or process disclosed in this document or that such use may not infringe the rights of any third party or assumes any liabilities with respect to the use of, or for damage resulting in any way from the use of, any information, apparatus, method or process disclosed in the document. Telephone +44 (0) 115 936 2900 (please ask for Proposal Management) E-mail [email protected] © Uniper Technologies Limited 2020 No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means electronic, mechanical, photocopying, recording or otherwise, without the written permission of the Directors of Uniper Technologies Limited, Technology Centre, Ratcliffe on Soar, Nottingham, NG11 0EE. CLIENT DISTRIBUTION LIST EF Dr A Read Redevelopment Manager, Ratcliffe-on-Soar Revision 2 UTG/20/PMP/489/R CONTENTS Page ABBREVIATIONS / NOMENCLATURE 1 INTRODUCTION ............................................................................................................... 1 2 SCOPE ............................................................................................................................. 1 3 ASSESSMENT CRITERIA ................................................................................................ 2 3.1 Air Quality Assessment Levels (AQALs)................................................................... 2 3.2 Industrial Pollution Regulation .................................................................................. 3 3.3 Significance Criteria ................................................................................................. 5 3.3.1 Significance Criteria for Industrial Sources ...................................................... 5 3.3.2 Additional Significance Criteria for Metals........................................................ 6 4 ASSESSMENT METHODOLOGY ..................................................................................... 6 4.1 Dispersion Model Selection ...................................................................................... 6 4.2 Modelled Scenarios .................................................................................................. 6 4.3 Emission Characteristics .......................................................................................... 7 4.3.1 Emissions from the Installation ........................................................................ 7 4.3.2 Emissions from the Existing Coal-fired Power Station ..................................... 8 4.3.3 Emissions from the OCGTs ............................................................................. 8 4.3.4 Emissions Summary ........................................................................................ 9 4.4 Meteorological Data ............................................................................................... 11 4.5 Grids ...................................................................................................................... 11 4.6 Surface Roughness ................................................................................................ 12 4.7 Terrain ................................................................................................................... 12 4.8 Buildings ................................................................................................................ 12 4.9 NOx Chemistry ....................................................................................................... 13 4.10 Human Receptor Points ......................................................................................... 13 4.11 Model Uncertainty .................................................................................................. 14 5 BASELINE CONDITIONS ............................................................................................... 16 5.1 Estimated Background Concentrations: Human Health Assessment ...................... 16 6 AIR QUALITY IMPACT ASSESSMENT .......................................................................... 17 6.1 Nitrogen Dioxide Concentrations ............................................................................ 25 6.1.1 99.79th Percentile Hourly Mean Nitrogen Dioxide Concentrations .................. 25 6.2 Sulphur Dioxide Concentrations ............................................................................. 27 6.2.1 Short-term Sulphur Dioxide Concentrations ................................................... 27 6.3 Annual Mean Chromium (VI) Concentrations ......................................................... 29 7 HABITATS IMPACT ASSESSMENT ............................................................................... 30 7.1 Local Ecologically Sensitive Sites........................................................................... 30 7.2 Assessment Criteria – Critical Levels and Critical Loads ........................................ 31 7.3 Significance Criteria for Ecological Impacts ............................................................ 33 7.4 Modelling Methodology .......................................................................................... 34 7.5 Results ................................................................................................................... 35 7.5.1 Assessment Against NH3 Annual Mean Critical Level .................................... 35 7.5.2 Assessment Against SO2 Annual Mean Critical Level .................................... 39 7.5.3 Assessment Against NOx Annual Mean Critical Level.................................... 42 Revision 2 UTG/20/PMP/489/R 7.5.4 Assessment Against NOx Maximum Daily Mean Critical Level ...................... 45 7.5.5 Assessment Against HF Maximum Daily Mean Critical Level ........................ 48 7.5.6 Assessment Against HF Maximum Weekly Mean Critical Level .................... 48 7.5.7 Assessment Against Nitrogen Critical Loads ................................................. 54 7.5.8 Assessment Against Acid Critical Loads ........................................................ 57 8 CONCLUSIONS .............................................................................................................. 61 8.1 Impacts on Human Health ...................................................................................... 61 8.2 Impacts on Local Ecological Sites .......................................................................... 61 9 REFERENCES ................................................................................................................ 63 FIGURES ................................................................................................................................. 64 STACK HEIGHT EVALUATION ...................................................................... A-1 WIND ROSES FOR SUTTON BONINGTON 2015–2019 ................................ B-1 EXISTING (BASELINE) AIR QUALITY ........................................................... C-1 Revision 2 UTG/20/PMP/489/R ABBREVIATIONS / NOMENCLATURE ADMS Air Dispersion Modelling System AEL Associated Emission Level AQAL Air Quality Assessment Level AQS Air Quality Strategy As Arsenic BAT Best Available Techniques BREF Best Available Techniques Reference Document Cd Cadmium CO Carbon Monoxide Co Cobalt Cr Chromium Cu Copper CLv Critical Level CLMaxN Acid Critical Load CLNutN Nutrient Nitrogen Critical Load EA Environment Agency EAL Environmental Assessment Level ELV Emission Limit Value EPUK Environmental Protection UK GT Gas Turbine HCl Hydrogen Chloride HF Hydrogen Fluoride Hg Mercury IED Industrial Emissions Directive IPPC Integrated Pollution