M1 J28 to 35A Smart Motorway Updated Operating Regime
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M1 J28 to 35a Smart Motorway Updated Operating Regime Air Quality Assessment - Technical Report M1 J28 to 35a Smart Motorway Updated Operating Regime Appendix D: Air Quality Assessment Technical Report October 2015 1043319/ENV/DOC/02/001 Working on behalf of the Highways England M1 J28 to 35a Smart Motorway Updated Operating Regime Air Quality Assessment - Technical Report Document Control Sheet M1 J28 to 35a Smart Motorway Updated Operating Document Title Regime Air Quality Assessment Technical Report Author Mouchel Owner Highways England Andy Kirk (Highways England, Project Manager) Phil Barton (Mouchel Project, Director) Distribution Bill Scourfield (Mouchel Project, Manager) All present on the Reviewer List Document Status Final Record of Issue Version Status Author Date Checked Date Authorised Date A Draft Alex Tait 06/07/15 R. Atuah 06/07/15 Andrew Thornhill 06/107/15 B Draft Alex Tait 13/07/15 R. Atuah 13/07/15 Andrew Thornhill 13/07/15 C Final R. Atuah 23/10/15 R. Atuah 23/10/15 Andrew Thornhill 26/10/15 Reviewer List Name Role Andy Kirk Highways England, Major Projects (Senior MP Project Manager) Richard Bernhardt Highways England, Network Services (Regional Environmental Advisor) Andy Bean Highways England, Network Services (Principal Air Quality Advisor) Approvals Name Signature Title Date of Issue Version Project Senior Tony Turton Responsible Officer (SRO) M1 J28 to 35a Smart Motorway Updated Operating Regime Air Quality Assessment - Technical Report Contents Document Control Sheet .................................................................................... ii Contents ................................................................................................................ i List of Tables ...................................................................................................... iii List of Figures ..................................................................................................... v Acronyms ........................................................................................................... vii 1 Introduction ............................................................................................... 9 2 Statutory Context and Guidance ........................................................... 12 2.1 Legislation ....................................................................................................... 12 2.2 Guidance .......................................................................................................... 14 3 Methodology ........................................................................................... 15 3.1 Introduction ..................................................................................................... 15 3.2 Traffic Data ...................................................................................................... 15 3.3 Study Area ....................................................................................................... 17 3.4 Background Data ............................................................................................. 17 3.5 Local and Project Specific Monitoring Data .................................................. 18 3.6 Meteorological Data ........................................................................................ 30 3.7 Relevant Receptors of Public Exposure ........................................................ 30 3.8 Ecologically Sensitive Receptors (Designated Sites) ................................... 30 3.9 Dispersion Model Verification (including Assumptions and Limitations) ................................................................................................................. 30 3.10 Long Term Nitrogen Dioxide Trends .............................................................. 32 3.11 Significance ..................................................................................................... 33 3.12 Compliance Risk Assessment ........................................................................ 34 3.13 WebTAG Local Appraisal ................................................................................ 35 3.14 Regional Emissions Assessment ................................................................... 35 4 Baseline Environment ............................................................................ 36 4.1 Traffic Conditions ............................................................................................ 36 4.2 Air Quality Management Areas (AQMAs) ....................................................... 36 4.3 Local Air Quality Monitored Concentrations ................................................. 37 4.4 Ecologically Sensitive Receptors (Designated Sites) ................................... 43 5 Operation Phase Assessment ............................................................... 44 5.1 Detailed Assessment ...................................................................................... 44 © Mouchel 2015 i M1 J28 to 35a Smart Motorway Updated Operating Regime Air Quality Assessment - Technical Report 5.2 Base Year (2012) .............................................................................................. 44 5.3 Opening Year (2017) Summary 70mph SM-ALR ............................................ 45 5.4 Significance ..................................................................................................... 46 6 Mitigation ................................................................................................. 49 6.1 Mitigation Options Investigated ..................................................................... 49 6.2 Opening Year (2017) Summary (Mitigation Option 4) ................................... 50 6.3 Ecologically Sensitive Receptors (Designated Sites) ................................... 50 6.4 Significance ..................................................................................................... 52 6.5 Opening Year – Geographical Areas Discussion (Mitigation Option 4) ....... 56 6.6 Compliance Risk Assessment ........................................................................ 62 6.7 WebTAG Local Assessment ........................................................................... 64 6.8 Regional Assessment ..................................................................................... 65 6.9 Mitigation Timeframe Projection .................................................................... 66 6.10 Staggered Implementation of the ALR Operating Regime ........................... 68 7 Summary ................................................................................................. 69 7.1 Proposed Scheme (70mph SM-ALR) .............................................................. 69 7.2 Mitigation ......................................................................................................... 69 7.3 Compliance Assessment ................................................................................ 69 7.4 Mitigation Timeframe Projection .................................................................... 70 Annex 1: Figures ............................................................................................... 71 Annex 2: Statutory Context .............................................................................. 72 Annex 3: Draft Note on Highway’s Agency’s Interim Alternative NOx and NO 2 Projections (24 October 2013) ........................................................... 73 Annex 4: Wind Roses ........................................................................................ 74 Annex 5: Model Verification ............................................................................. 75 Annex 6: AQMAs and Local Air Quality Management within the Study Area .................................................................................................................. 76 Annex 7: Opening Year Results ....................................................................... 77 Annex 8: Compliance Risk Assessment ......................................................... 78 Annex 9: Mitigation Timeframe Projection ...................................................... 79 © Mouchel 2015 ii M1 J28 to 35a Smart Motorway Updated Operating Regime Air Quality Assessment - Technical Report List of Tables Table 1: Objectives for NO 2 and PM 10 .................................................................. 12 Table 2: Annual Average Weekday and Weekend Time Periods used in the Assessment ......................................................................................................... 16 Table 3: NO 2 Continuous Monitor and Diffusion Tube Monitoring Locations used for Model Verification ........................................................................................... 19 Table 4: Verification Adjustment Zones ................................................................ 32 Table 5: Guideline Bands used in Determining the Significance of Local Air Quality Effects ................................................................................................................. 34 Table 6: Annual Mean NO 2 Monitoring Data: 2012 .............................................. 37 Table 7: Geographical Breakdown of Modelled Base Year Annual Mean NO 2 Results in Exceedence of AQS Objectives........................................................... 44 Table 8: Local Air Quality Receptors Informing Scheme Significance for the Standard SM-ALR Scheme (2017) .....................................................................