2017 Air Quality Annual Status Report (ASR) · 2018. 2. 28. · LAQM Annual Status Report 2017 Local Authority Officer Neil Green / Deborah Ferady Department Regulatory Services Address

Aylesbury Vale District Council

LAQM Annual Status Report 2017

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

Local Authority Officer

Neil Green / Deborah Ferady

Department Regulatory Services

Address The Gateway, Gatehouse Road, Aylesbury, Buckinghamshire, HP19 8FF

Telephone 01296 585605

E-mail [email protected]

Report Reference number

AVDC/ASR/2017

Date June 2017

mailto:[email protected]


LAQM Annual Status Report 2017 i

Executive Summary: Air Quality in Our Area

Air Quality in Aylesbury Vale District Council

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

areas1,2.

The annual health cost to society of the impacts of particulate matter alone in the UK

is estimated to be around £16 billion3.

Aylesbury Vale District Council is a district authority in Buckinghamshire with an

estimated population of 193,100 (2016) in an area of 900 square kilometres. The

district is predominantly rural but has several market towns. The main traffic routes

are the A41, A418 and the A421. There are no motorways within the Vale.

The main source of pollution in the district is from road transportation within town

centers’ and at busy junctions. Other sources include sources from outside the

district (i.e. emissions from London & Eastern Europe, etc.), and within the district

boundary (i.e. local industry). There are currently 55 Environmental Permits issued

by Aylesbury Vale District Council or the Environment Agency the largest of which

includes the energy from waste site at Edgcott.

Currently nitrogen dioxide (NO2) is the major pollutant of concern within Aylesbury

Vale and is monitored throughout the district utilising diffusion tubes.

The majority of Aylesbury Vale’s district meets the Air Quality Objectives (AQOs) (set

by the UK Government) for nitrogen dioxide (NO2) and the data for 2016 shows a

reduction in overall levels across the district. However there is one location within the

district, where concentrations of NO2 exceed the objective levels.

1 Environmental equity, air quality, socioeconomic status and respiratory health, 2010

2 Air quality and social deprivation in the UK: an environmental inequalities analysis, 2006

3 Defra. Abatement cost guidance for valuing changes in air quality, May 2013


LAQM Annual Status Report 2017 ii

Aylesbury Vale currently has 3 Air Quality Management Areas (AQMA’s) within its

district all of which are situated near Aylesbury town centre.

Monitoring data from 2016 as discussed in this report leads us to the following

recommendations;

1. The Tring Road AQMA is revoked.

2. Further monitoring undertaken in the Friarage Road AQMA to establish if an

AQMA is still required within this location.

3. Continue to monitor NO2 levels within Buckingham Town Centre.

Aylesbury Vale District Council will be working with internal and external partners to

formulate Action Plans to work towards reducing the levels of pollution in the AQMAs

to meet the Air Quality Objectives. Aylesbury Vale District Council will also continue

to be an active member within the Bucks Air Quality Management Group where

members of all the local authorities in Buckinghamshire, Buckingham County Council

and Public Health England meet to discuss pertinent air quality matters.

The current Air Quality Action Plan for Aylesbury Vale AQMA’s was produced in 2010

and therefore requires updating. Work on this will take place in conjunction with the

above specified recommendations.

Conclusions and Priorities

The data for 2016 shows an overall reduction in NO2 levels within the district. There

has also been a reduction in the number of non automatic monitored sites (diffusion

tubes site) recorded as being above the annual mean objective of 40 µg/m3 when

bias and distance corrected. In 2016 there was one recorded site above the objective

which is located within the Stoke Road AQMA. All other diffusion tube sites in 2016

reported levels were below the annual mean objective level.

The priorities for Aylesbury Vale District Council are to revoke the Tring Road AQMA

and complete further monitoring within the Friarage Road AQMA to determine if the

site can be revoked in the future. Aylesbury Vale District Council will also continue to

monitor NO2 levels within Buckingham Town Centre in line with recommendations

made in the completed Detailed Assessment.


LAQM Annual Status Report 2017 iii

We must then fully assess other areas and then develop an effective Air Quality

Action Plan to reduce NO2 levels in these areas.

Local Engagement and How to get Involved

Emissions from road transportation are the major source of air pollution in the district

and therefore the public can help reduce local air pollution concentrations by

choosing to walk, cycle and/or use public transport and reduce reliance on cars for

trips where possible.

When using a car for trips emissions can be minimised by ensuring that the vehicle is

not over revved and that the engine is switched off when the vehicle is stationary

(parked) or is likely to be stationary for a period of time. Emissions can be further

reduced by removing unnecessary loads from boots and roof carriers to minimise the

weight which improves fuel efficiency.


LAQM Annual Status Report 2017 iv

Table of Contents

Executive Summary: Air Quality in Our Area .......................................................... i

Air Quality in Aylesbury Vale District Council ...................................................................... i

Conclusions and Priorities ................................................................................................. ii

Local Engagement and How to get Involved ..................................................................... iii

1 Local Air Quality Management ........................................................................ 1

2 Actions to Improve Air Quality ........................................................................ 2

2.1 Air Quality Management Areas .............................................................................. 2

2.2 Progress and Impact of Measures to address Air Quality in Aylesbury Vale .......... 4

2.3 PM2.5 – Local Authority Approach to Reducing Emissions and/or

Concentrations.................................................................................................................. 7

3 Air Quality Monitoring Data and Comparison with Air Quality

Objectives and National Compliance ...................................................................... 8

3.1 Summary of Monitoring Undertaken ...................................................................... 8

3.1.1 Automatic Monitoring Sites ............................................................................................ 8

3.1.2 Non-Automatic Monitoring Sites..................................................................................... 8

3.2 Individual Pollutants .............................................................................................. 8

3.2.1 Nitrogen Dioxide (NO2)................................................................................................... 8

Appendix A: Monitoring Results ........................................................................... 13

Appendix B: Full Monthly Diffusion Tube Results for 2016 ................................ 21

Appendix C: Supporting Technical Information / Air Quality Monitoring

Data QA/QC ............................................................................................................. 23

Appendix D: Map(s) of Monitoring Locations and AQMAs ................................. 25

Appendix E: Summary of Air Quality Objectives in England .............................. 41

Glossary of Terms .................................................................................................. 42

References .............................................................................................................. 43

List of Tables

Table 2.1 – Declared Air Quality Management Areas .................................................. 3 Table 2.2 – Progress on Measures to Improve Air Quality .......................................... 6


LAQM Annual Status Report 2017 1

1 Local Air Quality Management

This report provides an overview of air quality in Aylesbury Vale during 2016. 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 Aylesbury Vale District Council 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.



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 12-18 months setting out measures

it intends to put in place in pursuit of compliance with the objectives.

A summary of AQMAs declared by Aylesbury Vale District Council can be found in

Table 2.1. Further information related to declared or revoked AQMAs, including maps

of AQMA boundaries are available online at https://uk-air.defra.gov.uk/aqma/local-

authorities?la_id=8 . 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).

We propose to revoke Tring Road AQMA (see monitoring section). We also propose

to continue to monitor the Friarage Road AQMA with the intention to revoke if future

monitoring results indicate it is no longer required.

https://uk-air.defra.gov.uk/aqma/local-authorities?la_id=8

https://uk-air.defra.gov.uk/aqma/local-authorities?la_id=8



Table 2.1 – 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

Friarage Road AQMA

16-Jun-08 NO2 Annual

Mean Aylesbury

An area encompassing a

number of properties along the

A418 (Friarage Road and Oxford

Road) in Aylesbury.

NO 44 29.5 Action plan to be updated

Stoke Road AQMA

16-Jun-08 NO2 Annual

Mean Aylesbury

An area encompassing the

junction of the A413 Wendover Road, Walton St, and

B4443 Stoke Road in Aylesbury

NO 59 35.1 Action plan to be updated

Tring Road AQMA

04-Jul-05 NO2 Annual

Mean Aylesbury

An area encompassing a stretch of the A41 Tring Road and

properties bordering it between the

Oakfield Road/King Edward Avenue

Junction and Queen Street in

Aylesbury.

NO 40 27.8

AQMA to be revoked.

Action plan not required

☒ Aylesbury Vale District Council confirm the information on UK-Air regarding their AQMA(s) is up to date



2.2 Progress and Impact of Measures to address Air Quality in Aylesbury Vale

Defra’s appraisal of last year’s ASR concluded Aylesbury Vale District Council should

review their action plan, that there is evidence that the Tring Road AQMA should be

revoked and that the council should consider further assessment in order to provide

the basis for developing further measures to reduce emissions in key hot spot

locations.

To address these actions Aylesbury Vale District Council have started to review their

action plan and have taken steps to revoke the Tring Road AQMA.

The 2016 ASR also concluded that the NO2 levels in Buckigham indicated that there

was a need further analysis of the air quality within Buckingham town centre.

Aylesbury Vale District Council therefore proposed to undertake an air modelling

assessment of the area to determine whether there is a need to declare a new

AQMA and if so where the boundaries should be drawn.

In line with this a Detailed Assessment was completed in June 2017 which concluded

there are no exceedances of the NO2 annual mean objective at locations where

relevant exposure is present. Therefore Aylesbury Vale District Council are not

required to declare an AQMA in Buckingham town centre at this time.

The Detailed Assessment did however indicate that annual mean NO2 concentrations

are close to the air quality objectives of 40 µg/m3 at locations where relevant

exposure may be present. Therefore diffusion tubes will continue to be deployed

within Buckingham Town Centre to monitor any future trends in recorded levels.

Additional diffusion tubes were deployed within and around the Friarage Road AQMA

in order to establish any variation to the AQMAs was required. The 2016 data from

Friarage Road AQMA shows an improvement in NO2 levels. Further monitoring will

be completed in this area in order to determine if the AQMA can be revoked.

Additional tubes were also deployed within the Stoke Road AQMA. The 2016 data

showed an improvement in NO2 levels in all locations monitored. However one

diffusion tube recorded a level above the was still above the annual objective level at

the nearest relevant exposure. Monitoring will continue and this information will be

used to inform the updating of the Action Plan.



Aylesbury Vale District Council’s priorities for the coming year are:

Revoke Tring Road AQMA

Continue to gather monitoring data on NO2 levels within the Stoke Road

AQMA and Buckingham Town Centre.

Review and update the Action Plan in line with the updated guidance

Whilst the measures stated above and in Error! Reference source not found. will

help to contribute towards compliance, Aylesbury Vale District Council anticipates

that further additional measures not yet prescribed will be required in subsequent

years to achieve compliance and enable the revocation of Stoke Road AQMA and

Friarage Road AQMA.



Table 2.2 – Progress on Measures to Improve Air Quality

Measure No.

Measure EU Category EU

Classification

Organisations involved

and Funding Source

Planning Phase

Implementation Phase

Key Performance

Indicator

Reduction in Pollutant /

Emission from Measure

Progress to Date

Estimated / Actual

Completion Date

Comments / Barriers to

implementation

1

Introduce new planning policy to include electronic charging points

within large developments

Policy Guidance and Development

Control

Air Quality Planning and

Policy Guidance

LA funded Dec-17 Jan-18 To be

confirmed

Reduced vehicle emissions

Funding secured, planning phase

Feb-18

2

Requirement for mandatory air

quality assessments to be

submitted for all large

developments


Control


Control

LA funded Dec-17

Jan-18

To be

confirmed



Feb-18

3

Obtain powers under the Road Traffic (Vehicle

Emissions) (Fixed Penalty)(England) Regulations 2002 to introduce and implement a 'no idling' campaign

Traffic Management

Anti-idling enforcement

LA funded

January 2018/February 2018

February 2018/March

2018

To be confirmed



Apr-18



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.

There is no regulatory standard applied to the PM2.5 role (for local authorities in

England) with respect to action to reduce emissions or concentrations of fine

particulate air pollution, although action to tackle PM10/NOx would usually contribute

to this. The EU Ambient Air Quality Directive does however set out air quality

standards for PM2.5 including an exposure reduction obligation, a target value and a

limit value, which may act as a guide to local authorities when interpreting their role.

Aylesbury Vale District Council also have 3 smoke control areas in Aylesbury. A map

showing the locations of the smoke control areas can be found at

https://www.aylesburyvaledc.gov.uk/smoke-control-areas-0.

Smoke control areas are areas where smoke cannot be emitted from a domestic

chimney unless an authorised fuel is burnt or an ‘exempt appliance’ is used in order

to reduce the amount of pollution emitted.

https://www.aylesburyvaledc.gov.uk/smoke-control-areas-0



3 Air Quality Monitoring Data and Comparison with Air Quality Objectives and National Compliance

3.1 Summary of Monitoring Undertaken

3.1.1 Automatic Monitoring Sites

This section sets out what monitoring has taken place and how it compares with

objectives.

Aylesbury Vale District Council undertook automatic (continuous) monitoring at 1 site

during 2016. Table A.1 in Appendix A shows the details of this site. The results from

the automatic continuous monitor are available at

http://www.airqualityengland.co.uk/local-authority/?la_id=14.

A map showing the location of the monitoring site is provided in Appendix D. Further

details on how the monitor is calibrated and how the data has been adjusted are

included in Appendix C.

3.1.2 Non-Automatic Monitoring Sites

Aylesbury Vale District Council undertook non- automatic (passive) monitoring of NO2

at 27 sites during 2016. Table A.2 in Appendix A shows the details of the sites.

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.

3.2.1 Nitrogen Dioxide (NO2)

Table A.3 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/m3.

For diffusion tubes, the full 2016 dataset of monthly mean values is provided in

Appendix B.

http://www.airqualityengland.co.uk/local-authority/?la_id=14



Table A.4 in Appendix A compares the ratified continuous monitored NO2 hourly

mean concentrations for the past 5 years with the air quality objective of 200µg/m3,

not to be exceeded more than 18 times per year.

Automatic Monitoring Data

The real time data obtained at Tring Road AQMA in 2015 indicated the site was

significantly below the annual mean objective for this pollutant with a measured level

of 26.2 µg/m3 when corrected for distance to the nearest relevant receptor. The

revised Updated and Screening Assessment in 2015 also recommended the

revocation of this AQMA. Therefore it was considered there was no longer a need to

have an Automatic Monitoring site in this location and the Tring Road Automatic

Monitoring site was decomissioned in April 2016.

The Walton Street Automatic Monitoring site measured in 40 µg/m3 in 2016 which

equates to 34.3 µg/m3 at the nearest relevant receptor This is based on 95% data

capture and is below the annual mean objective for this pollutant. In 2015 the

measured level was 34.1 µg/m3 based on 89% annual data capture which illustrates

that air quality at this location has not deteriorated. There were no hourly

exceedences of the 200 µg/m3 hourly objective. This monitoring site is currently

located to the north of the Stoke Road AQMA.

The revised Updating and Screening Assessment in 2015 recommended that the

monitoring network be expanded in and around the Stoke Road AQMA to inform any

future delineation changes to this AQMA. The continuous monitoring results from

2016 indicate that there have been no exceedances in the annual mean for the

pollutant north of the Stoke Road AQMA. Aylesbury Vale District Council therefore

propose to move the monitoring site back into the boundary of the Stoke Road

AQMA. Maps showing the location of the monitoring sites and the AQMAs are

provided in Appendix D.

Diffusion Tube data

Monitoring in and around Friarage Road AQMA (please see the tube location

plans in Appendix D).



There are two diffusion tubes inside the Friarage Road AQMA, numbers 20 and 21

on Oxford Road. As demonstrated in Table B.1 in 2016 the levels of nitrogen dioxide,

when bias and distance corrected in line with TG.09 Guidance, were well below the

annual mean objective of 40 µg/m3 at 28 µg/m3 and 19 µg/m3 respectively. This is

consistent with previous year’s data.

Two additional diffusion tubes located just outside of the Friarage Road AQMA were

also well below the annual mean objective of 40 µg/m3 in 2016 when bias and

distance corrected. These are tube 22, located to the north west of the AQMA, which

recorded a level of 22 µg/m3 and tube 23, located to the north of the AQMA, recorded

a level of 30 µg/m3.

As the levels recorded with the Friarage Road AQMA are significantly below the

annual mean objective level for the past two years they indicate that the AQMA may

no longer be required and could be revoked. Monitoring will continue at this location

in 2017 to inform any future decision.

Monitoring in and around the Stoke Road AQMA (please see the tube location


There are four diffusion tubes within the Stoke Road AQMA. These are number 14

and 18 located on Walton Street and numbers 15 and 16 located on Stoke Road. As

demonstrated in Table B.1, tube 14 recorded a level of 45 µg/m3 after bias and

distance adjustments were made. This is above the annual mean objective of 40

µg/m3 for nitrogen dioxide. The remaining tubes 15, 16 and 18 were recorded to be

below the objective when bias and distance corrected with all three tubes recording a

level of 35 µg/m3.

One additional diffusion tube located just outside of the Stoke Road AQMA, to the

north, recorded a level of 37 µg/m3 where previously the objective had been

exceeded.

When compared to last years data all diffusion tubes within and immediately outside

the Stoke Road AQMA have shown a reduction in nitrogen dioxide levels in 2016. In

addition in 2015 three tubes out of five recorded an exceedance whereas in 2016

only one tube, tube 14, recorded an exceedance.



This most recent monitoring data supports the view that this AQMA should be left in

situ however further monitoring should be completed to establish any future trends of

the pollutant within the area and if any further reductions occur.

Monitoring in and around the Tring Road AQMA (please see the tube location


Aylesbury Vale District Council deployed diffusion tube numbers 12 and 13 in this

area which both measured 28 µg/m3 when bias and distance corrected. These levels

are comfortably below the annual mean objective level and are consistent with the

measurements taken in previous years. As recommended in the 2016 ASR, this

AQMA is to be revoked. It is anticipated that this will be undertaken before December

2017.

Monitoring outside the AQMA’s

Buckingham Town Centre

There are currently 7 diffusion tubes located on the main routes into Buckingham

town centre. These are shown on the map in Appendix D.

Tube 5 and tube 6 in the Market Hill area measured 26 µg/m3 and 36 µg/m3

respectively when bias and distance corrected in line with TG.09 Guidance. These

readings are below the annual mean objective of 40 µg/m3 where previously the

objective had been exceeded.

The remaining tubes within Buckingham, tubes 1, 2, 3, 4 and 7, all measured below

the annual mean objective with recorded levels of 32 µg/m3, 35 µg/m3, 16 µg/m3, 16

µg/m3 and 30 µg/m3 respectively once bias and distance corrected. This is consistent

with previous year’s data.

A Detailed Assessment was completed within Buckingham Town Centre based on

the data from 2016 and previous years in July 2017. This assessment concluded that

an there was no requirement to declare and AQMA in this location but monitoring

should continue.



Other tube sites

All other tube sites in 2016 reported levels were below the annual mean objective

level and no further consideration of these is considered necessary.



Appendix A: Monitoring Results

Table A.1 – Details of Automatic Monitoring Sites

Site ID Site

Name Site Type

X OS Grid Ref

Y OS Grid Ref

Pollutants Monitored

In AQMA?

Monitoring Technique

Distance to Relevant

Exposure (m) (1)

Distance to kerb of

nearest road (m)

(2)

Inlet Height (m)

AM5 Walton Street

Roadside 482266 213315 NO2 NO Chemiluminescent;

FDMS 5 4 1

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.



Table A.2 – Details of Non-Automatic Monitoring Sites

Site ID Site Name Site Type X OS

Grid Ref Y OS Grid

Ref Pollutants Monitored

In AQMA?

Distance to

Relevant Exposure

(m) (1)

Distance to kerb of nearest

road (m) (2)

Tube collocated

with a Continuous Analyser?

Height (m)

1 West Street, Buckingham

Roadside 469518 234006 NO2 NO 0 1.5 NO 2

2 3 Bridge Street,

Buckingham Roadside 469587 233939 NO2 NO 0 2 NO 2

3 Well Street, Buckingham

Roadside 469601 233858 NO2 NO 0 1 NO 2

4 Bridge Street, Buckingham

Roadside 469672 233862 NO2 NO 0 5 NO 2

5 Market Square,


6 16 Market Square,


7 6 High Street,

Winslow Roadside 469727 234117 NO2 NO 0.5 3 NO 2

8 29 High Street,

Winslow Roadside 476979 227698 NO2 NO 0 2.5 NO 2

9 27 Elmhurst

Road, Aylesbury

Roadside 481891 214979 NO2 NO 11 2 NO 2

10 181 Aylesbury Road, Bierton

Roadside 483948 215645 NO2 NO 1 2 NO 2

11 Cambridge

Street, Aylesbury

Roadside 482177 214093 NO2 NO 1 1 NO 2



12 87 Tring Road,

Aylesbury Roadside 483128 213637 NO2 YES 2.5 3 NO 2

13 183 Tring

Road, Aylesbury

Roadside 483601 213590 NO2 NO 13 3 NO 2

14 25 Wendover

Road, Aylesbury

Roadside 482436 213121 NO2 NO 1 2.5 NO 2

15 2 Stoke Road,

Aylesbury Roadside 482444 213090 NO2 YES 1 1 NO 2

16 31 Stoke

Road, Aylesbury

Roadside 482376 213039 NO2 YES 3 2.5 NO 2

17

Viridian Square,

Walton Street, Aylesbury

Roadside 482278 213271 NO2 NO 4 2 NO 2

18 1-5 Wendover

Road, Aylesbury

Roadside 482374 213170 NO2 YES 2 1 NO 2

19 Exchange

Street, Aylesbury

Roadside 482237 213717 NO2 NO 2.5 0.5 NO 2

20

Friarage Road/Oxford

Road Roundabout,

Aylesbury


21 Oxford Road,

Aylesbury Roadside 481381 213823 NO2 NO 8.5 5 NO 2

22 10 Gatehouse

Road, Aylesbury

Roadside 481408 213940 NO2 NO 12.5 0.5 NO 2



23

Moorlands House,

Friarage Road, Aylesbury


24

Stonehaven Road/Bicester

Road, Aylesbury

Roadside 480710 214576 NO2 NO 12 3 NO 2

25 Buckingham

Road, Aylesbury

Roadside 481768 214276 NO2 NO 5 3 NO 2

26 High Street, Wendover

Roadside 486811 207795 NO2 NO 1 3 NO 2

27 91 Leighton Road, Wing

Roadside 488573 222902 NO2 NO 2.5 1.5 NO 2

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.



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/m3)

(3)

2012 2013 2014 2015 2016

AM5 Roadside Automatic n/a 95 n/a n/a 44 34.1 40

1 Roadside Diffusion

Tube n/a 100 n/a n/a n/a 34.5 32


Tube n/a 92 43.3 39.9 43.3 40.3 34.8


Tube n/a 100 n/a n/a n/a 16.3 15.6


Tube n/a 100 n/a n/a n/a 16.8 16.3


Tube n/a 100 30.1 42.2 31.6 28.8 26.2


Tube n/a 100 27.5 32 41.1 41.6 38.1


Tube n/a 92 n/a n/a n/a 34.6 30.1


Tube n/a 100 33.9 36.6 33.6 32.8 21.2


Tube n/a 100 31.8 28.9 27.4 29 33


Tube n/a 100 30.6 30.7 29 25.7 24.9


Tube n/a 100 34.7 24.8 33.6 31.8 32.3


Tube n/a 92 30.9 31.3 29.3 30.3 30.5


Tube n/a 100 30.3 32 30 21.2 39.7


Tube n/a 100 29.5 33 40.2 54 47.9




Tube n/a 83 27.9 33.8 42.2 41.3 38.3


Tube n/a 100 n/a n/a n/a 37.2 39.6


Tube n/a 100 40.5 36.2 39.7 42.2 45


Tube n/a 100 n/a n/a n/a 35.7 40


Tube n/a 100 n/a n/a n/a 32.3 38.5


Tube n/a 92 34.4 35.1 31.2 30.7 34.2


Tube n/a 92 n/a n/a n/a 21.1 21.2


Tube n/a 100 n/a n/a n/a 21.7 31.6


Tube n/a 92 41.6 42.2 47.1 36.8 34.5


Tube n/a 100 31 29.3 26.7 27.9 32.1


Tube n/a 100 28.7 29.9 27.6 27.3 26.8


Tube n/a 92 n/a n/a n/a 29.2 24.7


Tube n/a 92 n/a n/a n/a 34.8 35

☒ Diffusion tube data has been bias corrected

☒ Annualisation has been conducted where data capture is <75%

☒ If applicable, all data has been distance corrected for relevant exposure

Notes:

Exceedances of the NO2 annual mean objective of 40µg/m3 are shown in bold.

NO2 annual means exceeding 60µg/m3, 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.



Table A.4 – 1-Hour Mean NO2 Monitoring Results

Site ID Site Type Monitoring

Type

Valid Data Capture for Monitoring Period (%)

(1)

Valid Data Capture

2016 (%) (2)

NO2 1-Hour Means > 200µg/m3 (3)

2012 2013 2014 2015 2016

AM5 Roadside Automatic n/a 95.4 - - 0 0 0

Notes:

Exceedances of the NO2 1-hour mean objective (200µg/m3 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 99.8th percentile of 1-hour means is provided in brackets.



Appendix B: Full Monthly Diffusion Tube Results for 2016

Table B.1 – NO2 Monthly Diffusion Tube Results - 2016

Site ID

NO2 Mean Concentrations (µg/m3)

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Annual Mean

Raw Data

Bias Adjusted (factor)

and Annualised

(1)

Distance Corrected

to Nearest

Exposure (2)

1 37.2 30.9 40.8 34.8 50.8 40.8 31.9 34.5 45.0 49.7 50.1 52.2 41.6 32.00 32

2 50.3 37.9 39.9 35.3 48.7 37.4 40.9 37.1 52.7 M 57.3 59.3 45.2 34.78 34.8

3 19.4 17.5 18.4 14.7 19.7 16.6 11.9 14.4 21.9 25.5 27.1 36.2 20.3 15.62 15.6

4 19.6 18.1 20.7 15.0 22.3 18.2 13.1 15.6 21.7 29.6 27.5 32.9 21.2 16.32 16.3

5 35.3 30.7 28.0 20.8 43.8 30.1 24.6 24.1 36.2 40.4 45.0 48.4 34.0 26.15 26.2

6 52.8 40.5 39.7 38.7 52.5 49.4 46.9 43.3 52.7 51.6 62.3 62.6 49.4 38.06 35.5

7 45.4 29.6 32.1 31.5 47.0 35.3 35.2 35.9 M 42.1 48.0 54.2 39.7 30.55 29.8

8 42.2 32.7 37.0 29.2 48.0 34.0 33.6 33.2 43.2 43.6 51.3 58.6 40.6 31.23 31.2

9 48.7 36.0 18.2 29.8 49.0 37.9 40.9 42.9 49.3 41.2 57.1 63.1 42.8 32.99 24.8

10 33.6 29.1 24.9 23.2 31.8 28.0 24.8 24.1 36.2 34.0 45.2 53.3 32.4 24.91 23.7

11 44.6 30.1 39.4 28.3 41.1 37.7 36.9 36.8 45.3 45.5 54.5 63.3 42.0 32.31 29.8

12 38.3 34.1 35.4 M 42.9 34.5 24.6 32.0 35.8 46.5 54.0 56.9 39.5 30.45 27.8

13 45.5 39.6 35.6 34.9 57.8 51.8 53.7 48.4 54.8 59.7 67.2 69.7 51.6 39.70 28.4

14 73.0 57.2 48.7 45.5 62.7 53.1 65.7 62.2 71.5 50.2 75.0 81.5 62.2 47.89 45.2

15 51.9 42.5 37.0 44.4 59.3 44.9 49.1 49.7 49.5 M M 69.5 49.8 38.33 35.1



16 55.9 36.3 41.8 36.1 61.4 46.4 46.6 50.0 52.2 54.5 61.6 73.1 51.3 39.52 34.7

17 69.4 48.6 45.3 43.3 58.2 49.1 61.0 53.3 67.2 52.0 74.2 80.1 58.5 45.03 37.3

18 55.1 41.9 43.7 38.7 55.3 49.0 48.9 47.6 54.2 51.7 68.0 69.8 52.0 40.04 34.5

19 50.6 36.4 39.1 37.4 59.1 44.9 39.4 43.8 54.1 60.2 63.2 71.8 50.0 38.50 31.1

20 51.9 42.4 31.4 40.5 47.2 44.4 37.3 41.2 50.0 42.8 M 59 44.4 34.16 27.5

21 28.7 26.4 20.2 20.9 na 24.2 17.1 20.3 31.2 35.7 29.7 48.2 27.5 21.19 19.4

22 39.1 46.6 34.7 46.0 57.3 29.9 29.2 29.4 39.7 37.9 46.1 55.8 41.0 31.55 22.2

23 44.9 34.8 22.6 23.6 31.0 57.0 37.0 43.4 57.5 67.9 M 72.5 44.7 34.45 29.5

24 45.0 31.7 24.8 33.0 36.3 38.6 40.7 39.9 47.5 40.3 53.9 68.7 41.7 32.10 24.8

25 44.5 27.9 30.8 24.0 39.6 32.3 23.5 28.2 36.8 35.3 37.3 57.8 34.8 26.83 23.9

26 39.6 24.5 28.9 19.1 30.5 28.6 M 28.7 39.2 33.1 27.8 52.2 32.0 24.66 23.6

27 47.9 38.0 35.8 na 41.1 44.4 40.5 42.2 51.6 51.3 45.7 61.4 45.4 34.99 29.9

☐ Local bias adjustment factor used

☒ National bias adjustment factor used

☒ Annualisation has been conducted where data capture is <75%

Notes:

Exceedances of the NO2 annual mean objective of 40µg/m3 are shown in bold.

NO2 annual means exceeding 60µg/m3, 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.



Appendix C: Supporting Technical Information / Air Quality Monitoring Data QA/QC

Diffusion tubes are provided by Bureau Veritas (with a preparation method of 50%

TEA v/v in Acetone) and analysed by ESG Ltd by UV Spectrometry following the

procedures set out in the Harmonisation Practical Guidance. Analysis is carried out in

accordance with documented in-house laboratory Method GLM6.13

A bias adjustment factor of 0.77 was obtained from the National Diffusion Tube Bias

Adjustment Factor Spreadsheet (Version number 03/17 V2). The overall factor for

ESG Didcot lab, 50% TEA in Acetone, 2016, monthly exposed tubes was used.

No annualisation of the diffusion tube data is necessary because the data capture

rate is more than 75% at all tube locations. In total tube data for a one month period

was omitted at two locations due to tube contamination by spiders. Six tube locations

had a single month with no data due to missing tubes and one location had two

months with no data due to missing tubes.

The data has been distance corrected using the ‘NO2 fall off with distance from roads

calculator v4.1’. The background NO2 data for the calculation was retrieved from the

local background mapping data which is available on the DEFRA website at

https://uk-air.defra.gov.uk/data/laqm-background-maps?year=2013.

Our continuous logger is serviced and maintained by Riccardo AEA. Their audit

service is accredited by UKAS to ISO17025 for the on-site calibration of the gas

analysers. The quality control programme consists of 2 quality control audits per

year at 6 monthly intervals. These audit results provide:

Independent confirmation of appropriate data scaling factors for each gaseous

instrument

Independent assessment of analyser performance

An assessment of calibration cylinder concentrations, critical for accurate data

scaling

An Assessment of analyser flows and leak checks

https://uk-air.defra.gov.uk/data/laqm-background-maps?year=2013



Ricardo Energy and Environment currently provide UKAS accredited quality control

audits and data management services to the DEFRA national network (AURN) air

quality monitoring stations. The same service is provided for the Aylesbury Vale

District Council air quality monitoring programme.



Appendix D: Map(s) of Monitoring Locations and AQMAs Location of Continuous monitor at Walton Street, Aylesbury



Location of Diffusion Tubes Buckingham



Winslow



Bicester Road, Aylesbury



Buckingham Road, Aylesbury



Elmhurst Road, Aylesbury



Exchange Street/Cambridge Street, Aylesbury



Friarage Road/Oxford Road/Gatehouse Road, Aylesbury



Stoke Road/Walton Street/Wendover Road, Aylesbury



Tring Road, Aylesbury



Aylesbury Road, Bierton



High Street, Wendover



Leighton Road, Wing



Location of AQMA’s Stoke Road AQMA



Friarage Road AQMA



Tring Road AQMA



Appendix E: Summary of Air Quality Objectives in England

Table E.1 – Air Quality Objectives in England

Pollutant Air Quality Objective4

Concentration Measured as

Nitrogen Dioxide (NO2)

200 µg/m3 not to be exceeded more than 18 times a year

1-hour mean

40 µg/m3 Annual mean

Particulate Matter (PM10)

50 µg/m3, not to be exceeded more than 35 times a year

24-hour mean

40 µg/m3 Annual mean

Sulphur Dioxide (SO2)


1-hour mean


24-hour mean


15-minute mean

4 The units are in microgrammes of pollutant per cubic metre of air (µg/m

3).



Glossary of Terms

Abbreviation Description

AQAP 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’

AQMA 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

ASR Air quality Annual Status Report

Defra Department for Environment, Food and Rural Affairs

DMRB Design Manual for Roads and Bridges – Air quality screening tool produced by Highways England

EU European Union

FDMS Filter Dynamics Measurement System

LAQM Local Air Quality Management

NO2 Nitrogen Dioxide

NOx Nitrogen Oxides

PM10 Airborne particulate matter with an aerodynamic diameter of 10µm (micrometres or microns) or less

PM2.5 Airborne particulate matter with an aerodynamic diameter of 2.5µm or less

QA/QC Quality Assurance and Quality Control

SO2 Sulphur Dioxide



References

AVDC (2016) Annual Screening report. Available at

http://www.aylesburyvaledc.gov.uk/section/air-quality

Local Air Quality Management Technical Guidance (LAQM.TG(09))

https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/

69334/pb13081-tech-guidance-laqm-tg-09-090218.pdf

Defra website NO2 fall off with distance calculator accessed at

http://laqm.defra.gov.uk/tools-monitoring-data/no2-falloff.html

Defra website National bias adjustment factor spreadsheet (version 3/15)

accessed at http://laqm.defra.gov.uk/bias-adjustment-factors/national-

bias.html

Defra website Background maps accessed at

http://laqm.defra.gov.uk/review-and-assessment/tools/background-maps.html

Buckinghamshire Air Quality website http://www.bucksairquality.co.uk/

Air quality England website hosting data from AVDC’s continuous loggers. http://www.airqualityengland.co.uk/local-authority/?la_id=14

http://www.aylesburyvaledc.gov.uk/section/air-quality

https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/69334/pb13081-tech-guidance-laqm-tg-09-090218.pdf

https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/69334/pb13081-tech-guidance-laqm-tg-09-090218.pdf

http://laqm.defra.gov.uk/tools-monitoring-data/no2-falloff.html

http://laqm.defra.gov.uk/bias-adjustment-factors/national-bias.html

http://laqm.defra.gov.uk/bias-adjustment-factors/national-bias.html

http://laqm.defra.gov.uk/review-and-assessment/tools/background-maps.html

http://www.bucksairquality.co.uk/

http://www.airqualityengland.co.uk/local-authority/?la_id=14

Documents

2017 Air Quality Annual Status Report (ASR) · 2018. 2. 28. · LAQM Annual Status Report 2017 Local Authority Officer Neil Green / Deborah Ferady Department Regulatory Services Address