2017 Air Quality Annual Status Report (ASR)

Transcription

1 2017 Air Quality Annual Status Report (ASR) In fulfilment of Part IV of the Environment Act 1995 Local Air Quality Management June, 2017 LAQM Annual Status Report 2017

2 Local Authority Officer Department Address James Kershaw Telephone Report Reference number Customer First, Environmental Health & Housing Follaton House, Plymouth Road, Totnes, TQ9 5NE ASRSHWD.0002 Date June 2017 LAQM Annual Status Report 2017

3 Executive Summary: Air Quality in Our Area Air Quality in South Hams and West Devon Air pollution is associated with a number of adverse health impacts. It is recognised as a contributing factor in the onset of heart disease and cancer. Additionally, air pollution particularly affects the most vulnerable in society: children and older people, and those with heart and lung conditions. There is also often a strong correlation with equalities issues, because areas with poor air quality are also often the less affluent areas 1,2. The annual health cost to society of the impacts of particulate matter alone in the UK is estimated to be around 16 billion 3. Within the South Hams area there are 3 Air Quality Management Areas, these are located within the towns of Totnes and Ivybridge, and adjacent to the A38 at Dean Prior. The main pollutant of concern is Nitrogen Dioxide associated with road traffic pollution. The monitoring has shown no meaningful improvements in the air quality levels prior to The 2015 results did appear slightly better, however the 2016 figures increased back to the trend levels. There are no Air Quality Management Areas (AQMA) within West Devon, however the 2016 monitoring on Exeter Road in Okehampton has shown regular exceedances of NO2. Further monitoring locations on this road commenced in the latter part of 2016, and once we have determined the extent of the area where the levels are in exceedances of NO2 are determined we will seek to determine an Air Quality Management Area. Actions to Improve Air Quality Since the amendment to the Air Quality Management Order in 2016 the Council has been working on a new Clean Air Strategy for the two authority areas, including an air quality action plan for the three locations. This is currently in draft but we hope to put it out for public and statutory consultation in Environmental equity, air quality, socioeconomic status and respiratory health, Air quality and social deprivation in the UK: an environmental inequalities analysis, Defra. Abatement cost guidance for valuing changes in air quality, May 2013 LAQM Annual Status Report 2017 i

4 The clean air strategy also seeks to adopt a supplementary planning document, Conclusions and Priorities The trends have shown no improvements in air quality in time as was expected due to improvements in engine technology. The main priority in the next 12 months is to consult on the proposed Clean Air Quality Strategy to South Hams and West Devon with the public and statutory consultees. In West Devon the principle priority will be to determine the need and extent of a potential Air Quality Management Area in Exeter Road, Okehampton. Local Engagement and How to get Involved If you live within Totnes and are interested in helping to shape the future of the Totnes air quality action plan please get in contact with either the Transition Town Totnes Transport Group ( or Totnes Town Council. If you live within Ivybridge please contact Ivybridge Town Council with any ideas that you might have for improving the air quality in Ivybridge. Alternatively please feel free to contact Environmental Health at South Hams District Council or West Devon Borough Council, by to environmental.health@swdevon.gov.uk LAQM Annual Status Report 2017 ii

5 Table of Contents Executive Summary: Air Quality in Our Area... i Air Quality in South Hams and West Devon... i Actions to Improve Air Quality... i Conclusions and Priorities... ii Local Engagement and How to get Involved... ii 1 Local Air Quality Management Actions to Improve Air Quality Air Quality Management Areas Progress and Impact of Measures to address Air Quality in South Hams District Council and West Devon Borough Council PM 2.5 Local Authority Approach to Reducing Emissions and/or Concentrations Air Quality Monitoring Data and Comparison with Air Quality Objectives and National Compliance Summary of Monitoring Undertaken Automatic Monitoring Sites Non-Automatic Monitoring Sites Individual Pollutants Nitrogen Dioxide (NO2) Particulate Matter (PM10) Particulate Matter (PM2.5) Sulphur Dioxide (SO2)... 8 Appendix A: Monitoring Results... 9 Appendix B: Full Monthly Diffusion Tube Results for Appendix C: Supporting Technical Information / Air Quality Monitoring Data QA/QC Appendix D: Map(s) of Monitoring Locations and AQMAs Appendix E: Summary of Air Quality Objectives in England Glossary of Terms References LAQM Annual Status Report 2017 iii

6 List of Tables South Hams and West Devon Councils Table 1 Declared Air Quality Management Areas... 3 Table A.2 Details of Non-Automatic Monitoring Sites Table A.3 Annual Mean NO2 Monitoring Results Table 4 Table B.1 NO2 Monthly Diffusion Tube Results List of Figures Figure A.1 Trends in Annual Mean NO2 Concentrations for Totnes Figure A.2 Trends in Annual Mean NO2 Concentrations for Ivybridge Figure A.3 Trends in Annual Mean NO2 Concentrations for Dean Prior LAQM Annual Status Report 2017 iv

7 1 Local Air Quality Management This report provides an overview of air quality in South Hams and West Devon during It fulfils the requirements of Local Air Quality Management (LAQM) as set out in Part IV of the Environment Act (1995) and the relevant Policy and Technical Guidance documents. The LAQM process places an obligation on all local authorities to regularly review and assess air quality in their areas, and to determine whether or not the air quality objectives are likely to be achieved. Where an exceedance is considered likely the local authority must declare an Air Quality Management Area (AQMA) and prepare an Air Quality Action Plan (AQAP) setting out the measures it intends to put in place in pursuit of the objectives. This Annual Status Report (ASR) is an annual requirement showing the strategies employed by South Hams and West Devon to improve air quality and any progress that has been made. The statutory air quality objectives applicable to LAQM in England can be found in Table E.1 in Appendix E. LAQM Annual Status Report

8 2 Actions to Improve Air Quality 2.1 Air Quality Management Areas Air Quality Management Areas (AQMAs) are declared when there is an exceedance or likely exceedance of an air quality objective. After declaration, the authority must prepare an Air Quality Action Plan (AQAP) within months setting out measures it intends to put in place in pursuit of compliance with the objectives. A summary of AQMAs declared by South Hams District Council can be found on the next page. Further information related to declared or revoked AQMAs, including maps of AQMA boundaries are available online at Alternatively, see Appendix D: Map(s) of Monitoring Locations and AQMAs, which provides for a map of air quality monitoring locations in relation to the AQMA(s). LAQM Annual Status Report

9 Table 1 Declared Air Quality Management Areas AQMA Name Date of Declaration Pollutants and Air Quality Objectives City / Town One Line Description Is air quality in the AQMA influenced by roads controlled by Highways England? Level of Exceedance (maximum monitored/modelled concentration at a location of relevant exposure) Action Plan (inc. date of publication) At Declaration Now A38 AQMA Declared 03/03/2005 NO2 Annual Mean Dean Prior A single residential property adjacent to the A38 near to Dean Prior YES 70 µg/m3 70 µg/m3 None Ivybridge AQMA Declared 13/07/2009 NO2 Annual Mean Ivybridge A single residential property adjacent to the A38 near to Dean Prior NO 54 µg/m 3 43 µg/m 3 None Totnes Declared 13/07/2009, Amended 8/6/2016 NO2 Annual Mean Totnes An area encompassing a stretch of the A385 between True Street Junction, and the junction with Clay Lane. South Hams District Council confirm the information on UK-Air regarding their AQMA(s) is up to date NO 42ug/m3 (Bridgetown Terrace 2008) 56 42ug/m3 (Bridgetown Terrace 2008) 56.3 ug/m3 (True Street Junction, 2014) 42 ug/m3 (Bridgetown) 52 ug/m3 (True Street Junction) None LAQM Annual Status Report

10 2.2 Progress and Impact of Measures to address Air Quality in South Hams District Council and West Devon Borough Council Defra s appraisal of last year s ASR concluded An Action Plan has been developed in 2013 for measures to address the AQMAs in Ivybridge and Totnes. The extent of the AQMA has recently been extended in Totnes to account for an additional area of exceedance, however there appears no report received by Defra of changes to the original AQMA declared in The report highlights two single measured points of exceedance, one within the extended Totnes AQMA, and the other within the small area AQMA near the A38 at Dean Prior. On the basis of the evidence provided by the local authority the conclusions reached are acceptable for all sources and pollutants, with the provisos listed in the commentary below. The Council has now submitted the amended AQMA Order for Totnes to DEFRA. South Hams District and West Devon Borough Councils have been actively working on a revised air quality strategy, which includes revised Air Quality Action Plans, a supplementary planning guidance document, and a revision to the validation checklist to bring it in line with the revised IAQM guidance, this will all contained within a single Clean Air Strategy for South Hams and West Devon. The Councils expect the following measures to be completed over the course of the next reporting year: adoption of a clean air strategy for South Hams and West Devon following public and statutory consultation, and the implementation of the supplementary planning guidance. The principal challenges and barriers to implementation that South Hams and West Devon anticipates facing are a lack of support to consulting on the clean air strategy due to the Councils currently consulting on a proposed joint local plan. This is causing the public to object to new housing developments due to air quality impacts. Whilst the measures stated above will help to contribute towards compliance, South Hams District Council anticipates that further additional measures not yet prescribed will be required in subsequent years to achieve compliance and enable the revocation of all of the AQMAs. LAQM Annual Status Report

11 2.3 PM2.5 Local Authority Approach to Reducing Emissions and/or Concentrations As detailed in Policy Guidance LAQM.PG16 (Chapter 7), local authorities are expected to work towards reducing emissions and/or concentrations of PM2.5 (particulate matter with an aerodynamic diameter of 2.5µm or less). There is clear evidence that PM2.5 has a significant impact on human health, including premature mortality, allergic reactions, and cardiovascular diseases. South Hams and West Devon Councils are taking the following measures to address PM2.5: we are working on a clean air strategy for both Councils this is likely to detail promotion of non-private car alternatives, as well as requiring the facilitation of ultra- low emission vehicle infrastructure on all new residential developments. LAQM Annual Status Report

12 3 Air Quality Monitoring Data and Comparison with Air Quality Objectives and National Compliance 3.1 Summary of Monitoring Undertaken Automatic Monitoring Sites Neither South Hams nor West Devon have any automatic (continuous) monitoring sites. The last automatic monitoring for NO2 undertaken in the South Hams was in 2013 when a nitrogen Dioxide chemiluminescent analyser was in operation on Bridgetown Hill, Totnes. A PM10 screening analyser (an Osiris) was also in operation at the same location until 2014, for results see previous submitted air quality reports Non-Automatic Monitoring Sites South Hams District Council undertook non- automatic (passive) monitoring of NO2 at 28 sites during Table A.2 Details of Non-Automatic Monitoring Sites in Appendix A shows the details of the sites. West Devon Borough Council undertook non- automatic (passive) monitoring of NO2 at 6 sites during Maps showing the location of the monitoring sites are provided in Appendix D. Further details on Quality Assurance/Quality Control (QA/QC) for the diffusion tubes, including bias adjustments and any other adjustments applied (e.g. annualisation and/or distance correction), are included in Appendix C. 3.2 Individual Pollutants The air quality monitoring results presented in this section are, where relevant, adjusted for bias, annualisation and distance correction. Further details on adjustments are provided in Appendix C Nitrogen Dioxide (NO2) Table A.3 Annual Mean NO2 Monitoring Results in Appendix A compares the ratified and adjusted monitored NO2 annual mean concentrations for the past 5 years with the air quality objective of 40µg/m 3. LAQM Annual Status Report

13 For diffusion tubes, the full 2016 dataset of monthly mean values is provided in Appendix B. There are 2 locations within Totnes where the annual mean is greater than the objective level, these being locations TSH5 and TSH12 (42.1and 52.1 µg/m 3 respectively). At Ivybridge levels on Western Road, Ivybridge have returned to be above the objective levels at monitoring location ISH5 (Western Road terrace), last year the levels had dropped to 38.1 µg/m 3. Levels at Dean Prior continue to breach the objective levels, with monitoring location DPSH2 being 69.6µg/m 3. This would be a positive indication that there is the potential for the 1-hour mean objective to be breached. Due to the limited roadside space, and the fact that there is only a single sensitive receptor there is no intention for South Hams District Council to commence automated continuous monitoring at this location. This location being adjacent to the Devon Express Way A38, it is unlikely that traffic flows will vary during the day or night, and therefore it is also unlikely that NO2 levels will fluctuate dramatically. Monitoring recommenced in the latter part of 2016 in West Devon, and due to the low number of results it is too early to make any firm views in this area, however the results for OWD2 (East Street, Okehampton) are concerning and we have increased the number of diffusion tubes in this area, and we will keep the need to declare an AQMA under regular review. The trend data shows that apart from 2015, the NO2 appear to be fairly consistent and certainly the expected reductions in levels have not materialised with improvements in vehicle emission technology see Figures A.1 A Particulate Matter (PM10) Neither the annual mean nor the 24 hour mean objectives were exceeded as measured by the Osiris monitor on Bridgetown Hill up until The results obtained were included in the 2015 Updating and Screening Assessment (SHDC 2015) and it is not thought to be worthwhile to reproduce the results in the Appendix to this report. As noted above, access to the 2015 USA is available via South Hams District Council Environmental Health. LAQM Annual Status Report

14 3.2.3 Particulate Matter (PM2.5) The Councils have not undertaken any monitoring of PM2.5 in Sulphur Dioxide (SO2) The Councils have not undertaken any monitoring of SO2 in 2016 LAQM Annual Status Report

15 Appendix A: Monitoring Results Table A.1 Details of Automatic Monitoring Sites We have no automated monitoring sites Notes: (1) 0m if the monitoring site is at a location of exposure (e.g. installed on the façade of a residential property). (2) N/A if not applicable. LAQM Annual Status Report

16 Table A.2 Details of Non-Automatic Monitoring Sites Site ID Site Name Site Type X OS Grid Ref Y OS Grid Ref Pollutant s Monitore d In AQMA? Distance to Relevant Exposure (m) (1) Distance to kerb of nearest road (m) (2) Tube collocate d with a Continuo us Analyser? TSH1 Queens tce roadside NO2 yes 0 5 no 1.5 TSH2 Barn Close suburban NO2 yes 0 8 no 2 TSH3 Pudda-vine suburban NO2 yes 1 0 no 2 TSH4 Devon Ceramics kerbside NO2 yes 5 1 no 2 TSH5 TSH6 TSH7 Bridge-town Hill Tce Bridge-town Hill bottom Bridge-town Hill semi kerbside NO2 yes 0 1 no 2 kerbside NO2 yes 2 1 no 2.5 Roadside NO2 yes 0 10 no 2.5 TSH8 Bridge-town hill roadside NO2 yes 0 3 no 2 TSH9 TSH10 Bridge-town hill bus Bridge-town corner kerbside NO2 yes 0 1 no 2.5 kerbside NO2 No 0 1 no 2.5 TSH11 Bridge-town pub kerbside NO2 no 1 0 no 2.5 ISH1 End Western Rd kerbside NO2 yes 1 1 no 2.5 ISH2 ISH3 Western Rd video Western Rd villas kerbside NO2 yes 3 1 no 2.5 roadside NO2 yes 0 3 no 1 ISH4 imperial kerbside NO2 yes 5 1 no 2.5 Height (m) LAQM Annual Status Report

17 ISH5 Western Road Tce kerbside NO2 yes 0 1 no 2.5 ISH6 Sports-mans roadside NO2 no 1 1 no 2.5 DPSH1 Dean prior farm DPSH2 Dean Prior road Road side Road side NO2 yes 3 2 no NO2 yes 0 2 no 1 DPSH3 Dean Prior sign roadside NO2 yes 0 5 no 1 TSH12 True Street junction Road side NO2 no 2 0 no 1 TSH13 Candle-tree roadside NO2 no 10 0 no 1 TWD1 Dolvin Road left Roadside NO2 no 1 0 no 2 TWD2 Dolvin Road right Roadside NO2 no 1 0 no 2 TWD3 Tavi Calling-ton Road roadside NO2 no 1 1 no 2 TWD4 Tavi- Plym Road roadside NO2 no 5 1 no 2 OWD1 Charter Hall Oke roadside NO2 no 2 1 no 1.5 OWD2 East Street, Oke roadside NO2 no 2 1 no 1.5 Notes: (1) 0m if the monitoring site is at a location of exposure (e.g. installed on/adjacent to the façade of a residential property). (2) N/A if not applicable. LAQM Annual Status Report

18 Table A.3 Annual Mean NO2 Monitoring Results Site ID Site Type Monitoring Type Valid Data Capture for Monitoring Period (%) (1) Valid Data Capture 2016 (%) (2) NO2 Annual Mean Concentration (µg/m 3 ) (3) TSH1 roadside Diffusion Tube TSH2 suburban Diffusion Tube TSH3 suburban Diffusion Tube TSH4 kerbside Diffusion Tube TSH5 kerbside Diffusion Tube TSH6 kerbside Diffusion Tube TSH8 roadside Diffusion Tube TSH9 kerbside Diffusion Tube TSH10 kerbside Diffusion Tube TSH11 kerbside Diffusion Tube TSH12 Road side Diffusion Tube TSH13 roadside Diffusion Tube ISH1 kerbside Diffusion Tube ISH4 kerbside Diffusion Tube ISH5 kerbside Diffusion Tube ISH6 roadside Diffusion Tube DPSH1 Road side Diffusion Tube DPSH2 Road side Diffusion Tube DPSH3 roadside Diffusion Tube TWD1 Roadside Diffusion Tube LAQM Annual Status Report

19 TWD2 Roadside Diffusion Tube TWD3 roadside Diffusion Tube TWD4 roadside Diffusion Tube OWD1 roadside Diffusion Tube OWD2 roadside Diffusion Tube Diffusion tube data has been bias corrected Annualisation has been conducted where data capture is <75% (this has not been done for West Devon data as no nearby monitoring stations in accordance with LAQM) If applicable, all data has been distance corrected for relevant exposure (see table B1 for the distance adjusted data.) Notes: Exceedances of the NO2 annual mean objective of 40µg/m 3 are shown in bold. NO2 annual means exceeding 60µg/m 3, indicating a potential exceedance of the NO2 1-hour mean objective are shown in bold and underlined. (1) Data capture for the monitoring period, in cases where monitoring was only carried out for part of the year. (2) Data capture for the full calendar year (e.g. if monitoring was carried out for 6 months, the maximum data capture for the full calendar year is 50%). (3) Means for diffusion tubes have been corrected for bias. All means have been annualised as per Boxes 7.9 and 7.10 in LAQM.TG16 if valid data capture for the full calendar year is less than 75%. See Appendix C for details. LAQM Annual Status Report

20 LAQM Annual Status Report TSH5 TSH12 Year TSH TSH Concn. of NO Trends in Annual Mean NO 2 Concentrations for Totnes Figure A.1 Trends in Annual Mean NO2 Concentrations for Totnes South Hams and West Devon Councils

21 LAQM Annual Status Report Year Concn. NO Trends in Annual Mean NO 2 Concentrations for Ivybridge Figure A.2 Trends in Annual Mean NO2 Concentrations for Ivybridge South Hams and West Devon Councils

22 LAQM Annual Status Report DPSH2 DPSH3 Year Concn. of NO Trends in Annual Mean NO 2 Concentrations for Dean Prior Figure A.3 Trends in Annual Mean NO2 Concentrations for Dean Prior South Hams and West Devon Councils

23 Table A.2 1-Hour Mean NO2 Monitoring Results South Hams has no automated monitoring sites Notes: Exceedances of the NO2 1-hour mean objective (200µg/m 3 not to be exceeded more than 18 times/year) are shown in bold. (1) Data capture for the monitoring period, in cases where monitoring was only carried out for part of the year. (2) Data capture for the full calendar year (e.g. if monitoring was carried out for 6 months, the maximum data capture for the full calendar year is 50%). (3) If the period of valid data is less than 85%, the 99.8 th percentile of 1-hour means is provided in brackets. LAQM Annual Status Report

24 Table A.3 Annual Mean PM10 Monitoring Results South Hams has no automated monitoring sites Notes: Exceedances of the PM10 annual mean objective of 40µg/m 3 are shown in bold. (1) Data capture for the monitoring period, in cases where monitoring was only carried out for part of the year. (2) Data capture for the full calendar year (e.g. if monitoring was carried out for 6 months, the maximum data capture for the full calendar year is 50%). (3) All means have been annualised as per Boxes 7.9 and 7.10 in LAQM.TG16, valid data capture for the full calendar year is less than 75%. See Appendix C for details. LAQM Annual Status Report

25 Table A.4 24-Hour Mean PM10 Monitoring Results South Hams has no automated monitoring sites Notes: Exceedances of the PM10 24-hour mean objective (50µg/m 3 not to be exceeded more than 35 times/year) are shown in bold. (1) Data capture for the monitoring period, in cases where monitoring was only carried out for part of the year. (2) Data capture for the full calendar year (e.g. if monitoring was carried out for 6 months, the maximum data capture for the full calendar year is 50%). (3) If the period of valid data is less than 85%, the 90.4 th percentile of 24-hour means is provided in brackets. LAQM Annual Status Report

26 Table A.5 PM2.5 Monitoring Results South Hams has no automated monitoring sites Notes: (1) Data capture for the monitoring period, in cases where monitoring was only carried out for part of the year. (2) Data capture for the full calendar year (e.g. if monitoring was carried out for 6 months, the maximum data capture for the full calendar year is 50%). (3) All means have been annualised as per Boxes 7.9 and 7.10 in LAQM.TG16, valid data capture for the full calendar year is less than 75%. See Appendix C for details. LAQM Annual Status Report

27 Table A.6 SO2 Monitoring Results South Hams has no automated monitoring sites Notes: Exceedances of the SO2 objectives are shown in bold (15-min mean = 35 allowed a year, 1-hour mean = 24 allowed a year, 24-hour mean = 3 allowed a year) (1) Data capture for the monitoring period, in cases where monitoring was only carried out for part of the year. (2) Data capture for the full calendar year (e.g. if monitoring was carried out for 6 months, the maximum data capture for the full calendar year is 50%). (3) If the period of valid data is less than 85%, the relevant percentiles are provided in brackets. LAQM Annual Status Report

28 Appendix B: Full Monthly Diffusion Tube Results for 2016 Table 4 Table B.1 NO2 Monthly Diffusion Tube Results NO2 Mean Concentrations (µg/m 3 ) Annual Mean Site ID Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Raw Data Bias Adjusted (0.94) and Annualised (1) Distance Corrected to Nearest Exposure ( 2 ) TSH TSH TSH TSH TSH TSH TSH TSH TSH TSH TSH TSH ISH ISH ISH ISH LAQM Annual Status Report

29 DPSH DPSH DPSH TWD TWD TWD TWD OWD OWD CLICK HERE THEN PASTE COMPLETED DATA ROWS FROM EXCEL TEMPLATE Local bias adjustment factor used National bias adjustment factor used Annualisation has been conducted where data capture is <75% (Except for West Devon data as there is no relevant AURN s close to the NOx sites) Notes: Exceedances of the NO2 annual mean objective of 40µg/m 3 are shown in bold. NO2 annual means exceeding 60µg/m 3, indicating a potential exceedance of the NO2 1-hour mean objective are shown in bold and underlined. (1) See Appendix C for details on bias adjustment and annualisation. (2) Distance corrected to nearest relevant public exposure. LAQM Annual Status Report

30 Appendix C: Supporting Technical Information / Air Quality Monitoring Data QA/QC No additional information to provide. LAQM Annual Status Report

31 Appendix D: Map(s) of Monitoring Locations and AQMAs Map showing Totnes NO2 monitoring locations LAQM Annual Status Report South Hams and West Devon Councils

32 Map showing Totnes AQMA LAQM Annual Status Report South Hams and West Devon Councils

33 Map showing Ivybridge NO2 monitoring locations LAQM Annual Status Report South Hams and West Devon Councils

34 Map showing Ivybridge AQMA LAQM Annual Status Report South Hams and West Devon Councils

35 Map showing Dean Prior NO2 monitoring locations LAQM Annual Status Report South Hams and West Devon Councils

36 Map showing Dean Prior AQMA LAQM Annual Status Report

37 Map showing Tavistock NO2 monitoring locations LAQM Annual Status Report South Hams and West Devon Councils

38 Map showing Okehampton NO2 monitoring locations LAQM Annual Status Report South Hams and West Devon Councils

39 Appendix E: Summary of Air Quality Objectives in England Table E.1 Air Quality Objectives in England Pollutant Nitrogen Dioxide (NO2) Particulate Matter (PM10) Sulphur Dioxide (SO2) Air Quality Objective 4 Concentration Measured as 200 µg/m 3 not to be exceeded more than 18 times a year 1-hour mean 40 µg/m 3 Annual mean 50 µg/m 3, not to be exceeded more than 35 times a year 24-hour mean 40 µg/m 3 Annual mean 350 µg/m 3, not to be exceeded more than 24 times a year 1-hour mean 125 µg/m 3, not to be exceeded more than 3 times a year 24-hour mean 266 µg/m 3, not to be exceeded more than 35 times a year 15-minute mean 4 The units are in microgrammes of pollutant per cubic metre of air (µg/m 3 ). LAQM Annual Status Report

40 Glossary of Terms Please add a description of any abbreviations included in the ASR An example is provided below. Abbreviation AQAP AQMA ASR Defra DMRB EU FDMS LAQM NO2 NOx Description Air Quality Action Plan - A detailed description of measures, outcomes, achievement dates and implementation methods, showing how the local authority intends to achieve air quality limit values Air Quality Management Area An area where air pollutant concentrations exceed / are likely to exceed the relevant air quality objectives. AQMAs are declared for specific pollutants and objectives Air quality Annual Status Report Department for Environment, Food and Rural Affairs Design Manual for Roads and Bridges Air quality screening tool produced by Highways England European Union Filter Dynamics Measurement System Local Air Quality Management Nitrogen Dioxide Nitrogen Oxides PM10 Airborne particulate matter with an aerodynamic diameter of 10µm (micrometres or microns) or less PM2.5 QA/QC SO2 JLP Airborne particulate matter with an aerodynamic diameter of 2.5µm or less Quality Assurance and Quality Control Sulphur Dioxide Joint Local Plan LAQM Annual Status Report

41 References LAQM Annual Status Report