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Tonbridge and Malling Borough Council LAQM Progress Report 2011
Bureau Veritas Air Quality AGGX4344410/JB/2703 1
TONBRIDGE AND MALLING BOROUGH COUNCIL
2011 AIR QUALITY PROGRESS REPORT
AGGX4344410/JB/2703
JUNE 2011
Tonbridge and Malling Borough Council LAQM Progress Report 2011
Bureau Veritas Air Quality AGGX4344410/JB/2703 2
DOCUMENT CONTROL SHEET
Issue/Revision Issue 1 Issue 2
Remarks Draft
for Comment Final
Date May 2011 June 2011
Submitted to Jacqui Rands Jacqui Rands
Prepared by Ben Warren
James Bellinger
Ben Warren
James Bellinger
Signature
Approved by Erwan Corfa Erwan Corfa
Signature
Project number AGGX4344410 AGGX4344410
File reference JB/2703 JB/2703
Disclaimer
This Report was completed by Bureau Veritas on the basis of a defined programme of work and terms and conditions agreed with the Client. Bureau Veritas’ confirms that in preparing this Report it has exercised all reasonable skill and care taking into account the project objectives, the agreed scope of works, prevailing site conditions and the degree of manpower and resources allocated to the project.
Bureau Veritas accepts no responsibility to any parties whatsoever, following the issue of the Report, for any matters arising outside the agreed scope of the works.
This Report is issued in confidence to the Client and Bureau Veritas has no responsibility to any third parties to whom this Report may be circulated, in part or in full, and any such parties rely on the contents of the report solely at their own risk.
Unless specifically assigned or transferred within the terms of the agreement, the consultant asserts and retains all Copyright, and other Intellectual Property Rights, in and over the Report and its contents.
Any questions or matters arising from this Report should be addressed in the first instance to the Project Manager.
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Executive Summary
Part IV of the Environment Act 1995 places a statutory duty on local authorities to review and assess the air quality within their area and take account of Government Guidance when undertaking such work. This Progress Report is a requirement of the Fourth Round of Review and Assessment and is a requirement for all local authorities. The Report has been undertaken in accordance with the Technical Guidance LAQM.TG (09) and associated tools (as updated in 2010).
This Progress Report considers all new monitoring data and assesses the data against the Air Quality Objectives. It also considers any development changes that may have an impact on air quality as well as updating on any relevant strategy and policy changes.
Having considered the latest monitoring data and development updated, it is concluded that the air quality objectives for benzene, 1, 3-butadiene, carbon monoxide, lead, PM10 and sulphur dioxide will be met. There is no requirement to undertake a Detailed Assessment for these pollutants. However, there are exceedences of the annual mean nitrogen dioxide objective identified through monitoring data outside of the declared Air Quality Management Areas, and where there is relevant exposure. Therefore Tonbridge and Malling Borough Council will proceed to a Detailed Assessment, for the area around Sevenoaks Road, Borough Green.
Proposed actions from the Annual Progress Report are as follows:
� Continue the current monitoring programme. � Complete a Detailed Assessment for the Sevenoaks Road, Borough Green area.
� Consider the installation of a continuous monitor within the Wateringbury AQMA to
provide more robust data prior to amending the existing AQMA declaration to include declaration for the hourly mean NO2 objective in Wateringbury.
� Investigate the possibility of re- locating tube site TN12 closer to relevant receptors. � Proceed to an Updating and Screening Assessment in 2012.
Tonbridge and Malling Borough Council LAQM Progress Report 2011
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TABLE OF CONTENTS
TABLE OF CONTENTS................................... ....................................................................................... 4
1 Introduction ................................................................................................................................. 6
1.1 Description of Local Authority Area ................................................................................... 6
1.2 Purpose of Progress Report .............................................................................................. 6
1.3 Air Quality Objectives ........................................................................................................ 6
1.4 Summary of Previous Review and Assessments .............................................................. 8
2 New Monitoring Data................................................................................................................. 16
2.1 Summary of Monitoring Undertaken................................................................................ 16
2.1.1 Automatic Monitoring Sites .............................................................................................. 17
2.1.2 Non-Automatic Monitoring ............................................................................................... 19
2.2 Comparison of Monitoring Results with Air Quality Objectives ....................................... 24
2.2.1 Nitrogen Dioxide (NO2) .................................................................................................... 24
2.2.1.1 Automatic Monitoring Data .............................................................................................. 24
2.2.1.2 Diffusion Tube Monitoring Data ....................................................................................... 25
2.2.2 Summary of Compliance with AQS Objectives ............................................................... 27
3 New Local Developments......................................................................................................... 29
3.1 Road Traffic Sources ....................................................................................................... 29
3.2 Other Transport Sources ................................................................................................. 29
3.3 Industrial Sources ............................................................................................................ 29
3.4 Commercial and Domestic Sources ................................................................................ 29
3.5 New Developments with Fugitive or Uncontrolled Sources............................................. 29
4 Local / Regional Air Quality Strategy ...................................................................................... 30
5 Planning Applications............................................................................................................... 31
6 Air Quality Planning Policies ................................................................................................... 32
7 Local Transport Plans and Strategies..................................................................................... 33
8 Climate Change Strategies....................................................................................................... 34
9 Implementation of Action Plans .............................................................................................. 35
10 Conclusions and Proposed Actions ....................................................................................... 40
10.1 Conclusions from New Monitoring Data....................................................................... 40
10.2 Conclusions relating to New Local Developments....................................................... 40
10.3 Proposed Actions ......................................................................................................... 40
11 References ................................................................................................................................. 41
Appendices
Appendix A – QA:QC Data
Appendix B – Monitoring Data
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List of Tables
Table 1 - Air Quality Objectives included in Regulations for the purpose of Local Air Quality Management in England 7
Table 2 - Details of Automatic Monitoring Sites 18 Table 3 - Details of Non- Automatic Monitoring Sites 22 Table 4 - Results of NO2 Automatic Monitoring - Comparison with Annual Mean Objective 24 Table 5 - Results of NO2 Automatic Monitoring - Comparison with 1-hour Mean Objective 24 Table 6 - Results of Nitrogen Dioxide Diffusion Tube Monitoring 25 Table 7 – Action Plan Progress – AQMA 1 36
List of Figures
Figure 1 - AQMA 1: M20 AQMA (NO2 and PM10) 10 Figure 2 - AQMA 2 - Ditton AQMA (N02) 11 Figure 3 - AQMA 3 - Tonbridge High Street AQMA (NO2) 12 Figure 4 - AQMA 4 - Wateringbury AQMA (NO2) 13 Figure 5 - AQMA 5 - Aylesford AQMA (NO2) 14 Figure 6 - AQMA 6 - Larkfield AQMA (NO2) 15 Figure 7 - Map of Automatic and Non-Automatic Monitoring Sites whole Borough 20 Figure 8 - Map of Automatic and Non-Automatic Monitoring Sites in Ditton 20 Figure 9 - Map of Automatic and Non-Automatic Monitoring Sites in Tonbridge High Street 21
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1 Introduction
1.1 Description of Local Authority Area
The borough of Tonbridge and Malling lies in the heart of Kent and is an area of variety and historical interest. The borough is dotted with numerous picturesque villages including West Malling, East Malling, Ightham, Offham, Trottiscliffe, Aylesford and Shipbourne. The River Medway flows in a north easterly direction through Tonbridge and the Medway Gap in the North Downs.
Industry and commerce are concentrated around Tonbridge, Aylesford, Ditton, Larkfield and Snodland. Mineral extraction has been carried out in the area for many years. Paper and packaging mills, distribution, general and light industry and many small businesses make up the industrial scene. The borough is a popular area for office location and high tech development, particularly at Kings Hill business and residential community.
The borough is well served with roads and there are two main railway lines to London and the Channel ports.
The main source of air pollution in the borough is road traffic emissions from major roads, notably the M20, M26, M2, A20, A21, A25, A26, A227, A228 and A229. The Council has declared six Air Quality Management Areas (AQMAs) in relation to road traffic emissions of nitrogen dioxide (NO2) and, in addition one area (M20 corridor) for particulates (PM10). Other pollution sources, including commercial, industrial and domestic sources, also make a contribution to background pollution concentrations.
1.2 Purpose of Progress Report
Progress Reports are required in the intervening years between the three-yearly Updating and Screening Assessment reports. Their purpose is to maintain continuity in the Local Air Quality Management (LAQM) process.
They are not intended to be as detailed as Updating and Screening Assessment Reports, or to require as much effort. However, if the Progress Report identifies the risk of exceedence of an Air Quality Strategy objective, the Local Authority (LA) should undertake a Detailed Assessment immediately, and not wait until the next round of Review and Assessment.
1.3 Air Quality Objectives
The air quality objectives applicable to Local Air Quality Management (LAQM) in England are set out in the Air Quality (England) Regulations 2000 (SI 928), and the Air Quality (England) (Amendment) Regulations 2002 (SI 3043). They are shown in Table 1. This table shows the objectives in units of microgrammes per cubic metre (µg/m3). For carbon monoxide the units used are milligrammes per cubic metre (mg/m3). Table 1 includes the number of permitted exceedences in any given year (where applicable).
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Table 1 - Air Quality Objectives included in Regulations for the purpose of Local Air Quality Management in England
Pollutant
Concentration Measured as Date to be
Achieved by
16.25 µg/m3 Running annual mean 31.12.2003
Benzene (C 6H6) 5.00 µg/m3 Running annual mean 31.12.2010
1,3-Butadiene (C 4H6) 2.25 µg/m3 Running annual mean 31.12.2003 Carbon Monoxide (CO) 10.0 mg/m3 Running 8-hour mean 31.12.2003
0.5 µg/m3 Annual mean 31.12.2004 Lead
0.25 µg/m3 Annual mean 31.12.2008
200 µg/m3 not to be exceeded more than 18
times a year 1-hour mean 31.12.2005
Nitrogen Dioxide (NO 2)
40 µg/m3 Annual mean 31.12.2005
50 µg/m3, not to be exceeded more than 35
times a year 24-hour mean 31.12.2004
Particles (PM 10) (Gravimetric)
40 µg/m3 Annual mean 31.12.2004
350 µg/m3, not to be exceeded more than 24
times a year 1-hour mean 31.12.2004
125 µg/m3, not to be exceeded more than 3
times a year 24-hour mean 31.12.2004 Sulphur Dioxide (SO 2)
266 µg/m3, not to be exceeded more than 35
times a year 15-minute mean 31.12.2005
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1.4 Summary of Previous Review and Assessments
Tonbridge and Malling Borough Council undertook the first round of Review and Assessment between 1998 and 2001. The first round was a three-stage process, which assessed the sources of seven air pollutants of concern to health: benzene, 1,3 butadiene, carbon monoxide (CO), lead, nitrogen dioxide (NO2), fine particulates (PM10) and sulphur dioxide (SO2). The first round concluded that it was necessary to declare an Air Quality Management Area (AQMA) for nitrogen dioxide (NO2) and fine particulates (PM10) along the M20 corridor at Larkfield, Ditton and Aylesford due to road traffic emissions. An Air Quality Action Plan is in place to improve air quality within the M20 AQMA, in partnership with the Highways Agency.
The second round commenced in 2003 with the Updating and Screening Assessment (USA). Similar to stage one of the first round, there was consideration of the seven pollutants of concern to health and an assessment was made as to whether Air Quality Strategy (AQS) objectives for these pollutants would be met. The second round of Review and Assessment (2003 – 2004) concluded that there was a risk of exceedences of the NO2 annual mean objective at the nearest receptors to the:
� Tonbridge High Street (southern end),
� A26 Tonbridge Road/Red Hill junction (Wateringbury), and
� London Road/Station Road junction (Ditton).
Tonbridge and Malling Borough Council declared three further AQMAs at these locations on 1st June 2005. Road traffic emissions have been identified as the major contributor to exceedences of the annual mean NO2 objective in these three AQMAs. Tonbridge and Malling Borough Council are working in partnership with Kent County Council to implement actions to improve air quality through the Local Transport Plan and ‘Growth without Gridlock’.
The third round of Review and Assessment, following the same stages as the second round, beginning with a USA which Tonbridge and Malling Borough Council completed in June 2006, with the conclusion that a Detailed Assessment was required for NO2 due to emissions from road traffic outside the declared AQMAs along London Road in Larkfield, Ditton and Aylesford outside the declared AQMAs. Recommendations were also made for relocation of kerbside diffusion tube sites at Castle Way, Leybourne and London Road, Aylesford to more appropriate sites near to relevant exposure. In addition, monitoring was recommended at the nearest receptors to Hadlow Road/Cannon Lane, Tonbridge and A20 Hall Road/Mills Road, Aylesford junctions, to check compliance with the annual mean objective. The Detailed Assessment, which was informed by the additional monitoring, confirmed the need for two additional AQMAs along London Road at Larkfield/Ditton and Aylesford, which were declared in 2008. The Further Assessment was completed in 2009, which recommended continuance of the two AQMAs, along London Road at Aylesford and Larkfield, although the Larkfield AQMA was predicted to be marginally below the objective and may be revoked in future should monitoring continue to show compliance with the annual mean objective.
The 2009 Updating Screening and Assessment concluded that additional monitoring be undertaken for NO2 at Borough Green at the junction of the A25 Sevenoaks Road/ High Street as predicted annual mean NO2 concentrations were within 10% (36µgm3) of the air quality objective.
Tonbridge and Malling Borough Council LAQM Progress Report 2011
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The 2010 Annual Progress report concluded that site TN70, Sevenoaks Road, Borough Green which is located outside the declared AQMAs, was showing an exceedence of the annual mean NO2 objective. However only 4 months of data was available, thus continuation of monitoring was recommended. In accordance with Defra’s feedback further monitoring is being undertaken and the results will be presented as a Detailed Assessment Report in 2011.
The AQMAs declared in the borough are illustrated in Figure 1 to Figure 6.
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Figure 1 - AQMA 1: M20 AQMA (NO 2 and PM 10)
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Figure 2 - AQMA 2 - Ditton AQMA (N0 2)
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Figure 3 - AQMA 3 - Tonbridge High Street AQMA (NO 2)
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Figure 4 - AQMA 4 - Wateringbury AQMA (NO 2)
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Figure 5 - AQMA 5 - Aylesford AQMA (NO 2)
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Figure 6 - AQMA 6 - Larkfield AQMA (NO 2)
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2 New Monitoring Data
2.1 Summary of Monitoring Undertaken
This section provides details of monitoring carried out in 2010, the year covered by this report.
Several changes were made to passive monitoring locations following the completion of the 2010 APR. Nine sites were removed and nine new sites were added during the year. No changes were made to the continuous monitoring site within the Tonbridge High Street AQMA.
Sites that were removed in 2010 were:
� TN16 – High Street Tonbridge (Avebury Avenue)
� TN28 – Bell Lane Ditton
� TN46 – 3 Station Road Ditton
� TN50 – 64 High Street Tonbridge
� TN67 – 17 McKenzie Close, Aylesford
� TN69 – 3 High Street Borough Green
� TN71 – 2 Maidstone Road Borough Green
� TN65\ TN66 – London Road Larkfield (part of a triplicate)
New sites added in 2010 were:
� TN72\ TN73 – 55 Sevenoaks Road Borough Green (part of a triplicate)
� TN74\TN75 – High Street Tonbridge (no 10) (part of a triplicate)
� TN76\TN77 Tonbridge Road Wateringbury (part of a triplicate)
� TN78 – 44 Maidstone Road Borough Green
� TN79 – Corner Rock Road/Maidstone Road Borough Green
� TN80 – Station Road/Teapot Lane Aylesford
All monitoring site locations are illustrated in Figure 7 to Figure 9 as all sites were active during 2010.
Tonbridge and Malling Borough Council LAQM Progress Report 2011
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2.1.1 Automatic Monitoring Sites
Tonbridge and Malling Borough Council continue to monitor nitrogen dioxide using an continuous chemilumescence analyser at one location within the borough (Figure 9). The analyser, ‘Tonbridge Roadside 2’, is located within the Tonbridge High Street Air Quality Management Area (AQMA 3).
The Quality Assurance/Quality Control (QA/QC) procedures for the Kent and Medway Air Quality Monitoring Network (KMAQMN) are equivalent to the UK Automatic Urban and Rural Network (AURN) procedures with the exception of the following:
� Calibration of NOX analysers with NO gas (AURN also use NO2)
� Data checks are done once daily and downloads are done twice daily (AURN are hourly)
� Independent audits of the stations are undertaken annually (AURN are 6 monthly).
AEA operate as site managers for ‘Tonbridge Roadside 2’ and ratify the data on behalf of the Kent and Medway Air Quality Monitoring Network.(KMAQMN.)
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Table 2 - Details of Automatic Monitoring Sites – Tonbridge Roadside 2
Site Name Site Type OS Grid Reference (X, Y)
Pollutants Monitored Monitoring Technique In
AQMA?
Relevant Exposure? (Y/N with distance (m) to
relevant exposure)
Distance to Kerb of Nearest
Road (N/A if not applicable)
Does this Location
Represent Worst-case Exposure?
Tonbridge Roadside 2
(AQMA) Roadside 558867 146171 NO2 Chemiluminescent Y Y (1m) 2.3m Y
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2.1.2 Non-Automatic Monitoring
During 2010, the Council monitored NO2 using diffusion tubes at 30 sites, including 6 triplicates. As stated before, nine sites were closed in the first part of the year, with nine new sites being installed for the second half of the year.
The Council has provided nitrogen dioxide diffusion tube data to the Kent and Medway Air Quality Monitoring Network since 1993. The diffusion tubes are supplied and analysed by Scientifics (part of ESG and previously known as Harwell Scientifics) utilising the 50% Triethanolamine (TEA) in acetone preparation method. Scientifics participate in the Workplace Analysis Scheme for Proficiency (WASP) for NO2 diffusion tube analysis and the Annual Field Inter-Comparison Exercise. These provide strict performance criteria for participating laboratories to meet, thereby ensuring NO2 concentrations reported are of a high calibre. The lab follows the procedures set out in the Harmonisation Practical Guidance.
With regard to the application of a bias adjustment factor for the diffusion tubes, the technical guidance LAQM.TG (09) and LAQM Support website1.recommend use of a local bias adjustment factor where available and relevant to diffusion tube sites. Tonbridge and Malling Borough Council do not currently have a local co-location study, so the relevant bias adjustment factor for 2010 has been taken from the National Bias Adjustment spreadsheet. For 2010, the bias adjustment factor is 0.85 for this laboratory and preparation method (based on 18 studies; spreadsheet version 04/11). For 2008 - 2009 data, the bias corrected results have been taken from the Council’s 2010 LAQM Progress Report, to put the 2010 results into context.
1 http://laqm.defra.gov.uk/tools-monitoring-data/year-adjustment.html
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Figure 7 - Map of Automatic and Non-Automatic Monitoring Sites whole Borough
Figure 8 - Map of Automatic and Non-Automatic Monitoring Sites in Ditton
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Figure 9 - Map of Automatic and Non-Automatic Monitoring Sites in Tonbridge High Street
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Table 3 - Details of Non- Automatic Monitoring Sites
Site No. Location Site Type X Y
Pollutant
monitored
In AQM
A (Y/N)
?
Relevant Exposure? (Y/N with
distance (m) to relevant exposure)
Distance to kerb of nearest
road (N/A if not
applicable)
Worst- case
Location (Y/N)?
TN5 Hall Road, Aylesford
Urban Industrial 572628 158566 NO2 Y Y-4.7m 4.1m N
TN7
New Hythe Lane,
Larkfield (Church Farm)
Urban Industrial 570431 158937 NO2 Y N 19m N
TN10 Offham
Road, West Malling
Background 567617 157635 NO2 N Y-3.5m 2.8m N
TN12
London Road,
Wrotham Heath
Kerbside 563784 158059 NO2 N Y-26m <1m Y
TN16
High Street, Tonbridge (Avebury Avenue)
Roadside 558850 146148 NO2 Y Y-0m 4.3m N
TN18 Wilson Road,
Tonbridge Background 560263 148509 NO2 N Y-0m N/A N
TN28 Bell Lane, Ditton
Urban Industrial
570844 158899 NO2 Y N 12.5m N
TN29 Station Road,
Aylesford Industrial 571607 158715 NO2 Y Y-25 28.5m N
TN30 Teapot Lane,
Aylesford Industrial 572035 158573 NO2 Y N 50m N
TN33
Tonbridge Road/Red Hill corner,
Wateringbury
Roadside 569201 153486 NO2 Y 0.5m 1.1m Y
TN35 High Street, Tonbridge (no. 35)
Roadside 558948 146277 NO2 Y Y-0m 4.4m N
TN42 /77 /76
Tonbridge Road,
Wateringbury (opposite
garage)
Roadside 569226 153475 NO2 Y Y-0m 1.6m Y
TN43
Tonbridge Road/Red
Hill, Wateringbur
y
Roadside 569187 153498 NO2 Y Y-0m 2.9m N
TN44 High Street, Tonbridge (no. 46a)
Roadside 558929 146271 NO2 Y Y-0m 3.8m N
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Site No. Location Site Type X Y
Pollutant
monitored
In AQM
A (Y/N)
?
Relevant Exposure? (Y/N with
distance (m) to relevant exposure)
Distance to kerb of nearest
road (N/A if not
applicable)
Worst- case
Location (Y/N)?
TN45 /74 /75
High Street, Tonbridge
(no.10) Roadside 558864 146166 NO2 Y Y-0m 2.3m N
TN46
3 Station Road,
Ditton (no. 3)
Roadside 571297 158409 NO2 Y Y-0m 12.5m N
TN47
London Road,
Ditton (no. 516)
Roadside 571399 158375 NO2 Y Y-0.4m 20m N
TN49 /53 /54
London Road,
Ditton A (527/529)
Roadside 571237 158377 NO2 Y Y-0m 12.2m N
TN50 High Street, Tonbridge (no. 64)
Roadside 558958 146324 NO2 Y Y-0m 2.7m N
TN56
Pump Close,
Leybourne (no. 8c)
Roadside 568714 158301 NO2 N Y-0m 14.5m N
TN57 /58 /59
London Road,
Larkfield A (no. 743)
Roadside 570467 158328 NO2 Y Y-0m 5.4m N
TN60 /62 /63
London Road,
Aylesford A (no. 290)
Roadside 572423 157932 NO2 Y Y-0.9m 2.7m N
TN61
70 Hadlow Road,
Tonbridge (no. 70)
Roadside 559572 147017 NO2 N Y-1.2m 5.5m N
TN64 /65 /66
London Road,
Larkfield A (no. 606)
Roadside 570948 158482 NO2 Y Y-0m 4.3m N
TN67
Mckenzie Close,
Aylesford (no. 17)
Roadside 572378 157935 NO2 Y Y-0.5m 4.4m N
TN68 Hall Road, Aylesford
(no. 7) Roadside 572430 157975 NO2 Y Y-0m 7.3m N
TN70 /72 /73
55 Sevenoaks
Road Borough Green
Façade 560569 157328 NO2 N Y-0m 1.0m Y
TN 78
44 Maidstone
Road Borough Green
Roadside 560652 157298 NO2 N Y-0m 3m Y
TN 79
Corner Rock
Road/Maidstone Road
BG
Roadside 560670 157269 NO2 N Y-1.5m 2m Y
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Site No. Location Site Type X Y
Pollutant
monitored
In AQM
A (Y/N)
?
Relevant Exposure? (Y/N with
distance (m) to relevant exposure)
Distance to kerb of nearest
road (N/A if not
applicable)
Worst- case
Location (Y/N)?
TN 80
Station Road/Teap
ot Lane, Aylesford
Urban Industrial
572064 158642 NO2 N N NA Y
2.2 Comparison of Monitoring Results with Air Quality Objectives
2.2.1 Nitrogen Dioxide (NO 2)
2.2.1.1 Automatic Monitoring Data
The monitoring results for the continuous analyser in Tonbridge and Malling are given in Table 4 and Table 5 below. Data capture in 2010 was above the recommended 90% and therefore no annualisation was required.
Table 4 - Results of NO 2 Automatic Monitoring - Comparison with Annual Mean Objective
Annual Mean Concentrations (µg/m 3)
Site ID Location Within AQMA?
Data Capture for Monitoring
Period %
Data Capture for Full
Calendar Year 2010
% 2008 2009 2010
Tonbridge Roadside 2
(AQMA)
X = 558867 Y= 146171
Yes 99% 99% 50 47 49
In bold, exceedence of the NO2 annual mean AQS objective of 40µg/m3
Table 5 - Results of NO 2 Automatic Monitoring - Comparison with 1-hour Mean Objective
Number of Hourly Means > 200 µg/m 3 *
Site ID Location Within AQMA?
Data Capture
for Monitoring
Period %
Data Capture for Full
Calendar Year 2010
%
2008 2009 2010
Tonbridge Roadside 2 (AQMA)
X = 558867 Y= 146171 Yes 99% 99% 5 0 3
In bold, exceedence of the NO2 hourly mean AQS objective (200 µg/m3 – not to be exceeded more than 18 times per year) * If the period of valid data is less than 90% of a full year, the 99.8th percentile of hourly means is shown in brackets
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2.2.1.2 Diffusion Tube Monitoring Data
The monitoring results for the Nitrogen Dioxide diffusion tubes across in Tonbridge and Malling are given in Table 6 below. For those diffusion tubes with less than 75% data capture, results have been annualised (see details in Appendix A).
Additional tubes were collocated during 2010 with single tubes TN42, TN45 and TN70, already installed, leading to these four sites becoming triplicate sites. Conversely, tubes were removed from triplicate site TN64 /65/66, with only tube TN64 remaining. As data capture for these sites varies depending on which set (single or triplicate) is considered, both results are provided in the table below.
Table 6 - Results of Nitrogen Dioxide Diffusion Tube Monitoring
Annual Mean Concentrations (µg/m 3)
Site ID Location Within AQMA?
Data Capture for
Monitoring Period %
Data Capture for
Full Calendar
Year 2010 %
2008 (bias
factor: 0.79)
2009 (bias
factor: 0.81)
2010 (bias
factor: 0.85)
TN5 Hall Road, Aylesford Y 100 100 44 51 45.7
TN7 New Hythe
Lane, Larkfield (Church Farm)
Y 58 58 34 36 44.8*
TN10 Offham Road, West Malling N 100 100 22 22 21.4
TN12 London Road, Wrotham Heath N 92 92 37 39 39.9
TN16
High Street, Tonbridge (Avebury Avenue)
Y 42 42 33 38 36.3*
TN18 Wilson Road, Tonbridge N 100 100 16 19 16.6
TN28 Bell Lane, Ditton Y 33 33 34 39 38.4*
TN29 Station Road, Aylesford Y 100 100 30 35 37.0
TN30 Teapot Lane, Aylesford Y 92 92 41 43 43.4
TN33
Tonbridge Road/Red Hill
corner, Wateringbury
Y 100 100 50 56 62.1
TN35 High Street,
Tonbridge (no. 35)
Y 100 100 40 46 45.7
TN42 (single)
Tonbridge Road,
Wateringbury (opposite garage)
Y 92 92 52 60 70.4
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Annual Mean Concentrations (µg/m 3)
Site ID Location Within AQMA?
Data Capture for
Monitoring Period %
Data Capture for
Full Calendar
Year 2010 %
2008 (bias
factor: 0.79)
2009 (bias
factor: 0.81)
2010 (bias
factor: 0.85)
TN42,76,77 (triplicate)
Tonbridge Road,
Wateringbury (opposite garage)
Y 86 50 - - 71.9*
TN43 Tonbridge
Road/Red Hill, Wateringbury
Y 100 100 36 40 43.3
TN44 High Street,
Tonbridge (no. 46a)
Y 100 100 44 49 47.5
TN45 (single)
High Street, Tonbridge
(no.10) Y 100 100 44 48 49.2
TN45,74,75 (triplicate)
High Street, Tonbridge
(no.10) Y 100 58 - - 49.6*
TN46 3 Station Road, Ditton (no. 3) Y 100 42 26 28 29.4*
TN47 London Road, Ditton (no. 516) Y 100 100 21 34 24.4
TN 49,53,54
(triplicate)
London Road, Ditton A
(527/529) Y 97 97 35 35 36.5
TN50 High Street,
Tonbridge (no. 64)
Y 100 42 44 48 44.3*
TN56 Pump Close,
Leybourne (no. 8c)
N 100 100 25 28 27.4
TN57,58,59 (triplicate)
London Road, Larkfield A (no.
743) Y 100 100 36 39 42.1
TN60,62,63 (triplicate)
London Road, Aylesford A (no.
290) Y 100 100 44 50 50.9
TN61
70 Hadlow Road,
Tonbridge (no. 70)
N 100 100 26 31 30.2
TN64 (single)
London Road, Larkfield A (no.
606) Y 92 92 33 34 35.5
TN64,65,66 (triplicate)
London Road, Larkfield A (no.
606) Y 100 58 - - 37.0*
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Annual Mean Concentrations (µg/m 3)
Site ID Location Within AQMA?
Data Capture for
Monitoring Period %
Data Capture for
Full Calendar
Year 2010 %
2008 (bias
factor: 0.79)
2009 (bias
factor: 0.81)
2010 (bias
factor: 0.85)
TN67 Mckenzie
Close, Aylesford (no. 17)
Y 100 42 31 30 29.7*
TN68 Hall Road,
Aylesford (no. 7)
Y 100 100 33 36 35.4
TN69 3 High St, Borough Green
N 100 42 - 24 32.3*
TN70 (single)
54 Sevenoaks Road, Borough
Green N 100 100 - 51 49.2
TN70,72,73 (triplicate)
55 Sevenoaks Road, Borough
Green N 100 72 - - 50.7*
TN71
2 Maidstone Road,
Borough Green
N 100 42 - 26 34.8*
TN78 44 Maidstone Road Borough
Green N 100 58 - - 38.2*
TN79
Corner Rock Road/Maidstone Road Borough
Green
N 100 58 - - 36.0*
TN80 Station
Road/Teapot Lane, Aylesford
N 43 25 - - 32.5*
In bold, exceedence of the NO2 annual mean AQS objective of 40µg/m3 * = data has been annualised
2.2.2 Summary of Compliance with AQS Objectives
The 2010 diffusion tube results show that 13 sites exceeded the annual mean NO2 AQS objective of 40µg/m3 in 2010, 12 of which located within the declared AQMAs.
Results from TN12 (London Road, Wrotham Heath) also just meets the annual mean objective (39.9µg/m3). This site is outside the existing AQMAs, however, the nearest relevant receptor is located 26m away. It is therefore unlikely that the NO2 AQS objectives will be
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exceeded at nearby properties and it is not necessary to proceed to a Detailed Assessment. Tonbridge and Malling will investigate the relocation of this tube site to be closer to the relevant receptors.
An exceedence was also recorded at TN70 in Borough Green, outside existing AQMAs. The NO2 annual mean at this site have been over 50µg/m3 both in 2009 and 2010. The Council did not proceed to Detailed Assessment for this site in 2009 as there was only four months of available data. Thus it was recommended that monitoring continue at the site till a full years data set was built up.
The Council should therefore progress to a Detailed Assessment as monitoring at TN70 continues to demonstrate a risk of exceedence of the annual mean objective. The additional monitoring at the site (now triplicate) that commenced in 2009 should be continued to aid the robustness of any assessment.
With respect to the hourly NO2 objective, there could be a potential risk of exceedence of this short-term objective, where the annual mean NO2 concentration is >60µg/m3.
TN42 on Tonbridge Road, Wateringbury with an annual mean of 70µg/m3 and TN33 on Tonbridge Road/Red Hill Corner, Wateringbury with an annual mean of 64µg/m3, indicate the risk of exceedence of the short term objective for NO2. Both sites are within the Wateringbury AQMA, which has been declared for the annual mean NO2 objective only; therefore, the Council should consider amending the AQMA order to cover the hourly mean objective as well.
Tonbridge and Malling Borough Council has measured concentrations of NO2 above the annual mean objective at relevant locations outside of the AQMAs, and will need to proceed to a Detailed Assessment , for the area around Sevenoaks Road, Borough Green.
Measured NO2 concentrations showing a risk of exceedence of the hourly mean objective at two sites within the Wateringbury AQMA. The Council should therefore consider amending the AQMA order to cover the hourly mean objective.
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3 New Local Developments
3.1 Road Traffic Sources
Tonbridge and Malling Borough Council confirms there are no newly identified or newly implemented road traffic sources, which may have an impact on air quality within the Local Authority area.
3.2 Other Transport Sources
Tonbridge and Malling Borough Council confirms there are no newly identified or newly implemented other transport sources, which may have an impact on air quality within the Local Authority area.
3.3 Industrial Sources
Tonbridge and Malling Borough Council confirms that there are no new or newly identified industrial sources (either under the LAPC regime or EP Regulations) which may have an impact on air quality within the Local Authority’s area.
3.4 Commercial and Domestic Sources
Tonbridge and Malling Borough Council confirms that there are no new or newly identified industrial sources (either under the LAPC regime or EP Regulations) which may have an impact on air quality within the Local Authority’s area.
3.5 New Developments with Fugitive or Uncontrolled Sources
Tonbridge and Malling Borough Council confirms there are no new developments with fugitive or uncontrolled sources.
Tonbridge and Malling Borough Council confirms that there are no new or newly identified local developments which may have an impact on air quality within the Local Authority’s area.
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4 Local / Regional Air Quality Strategy
Tonbridge and Malling Borough Council does not have a Local Air Quality Strategy, but works in partnership with Kent County Council (KCC) and the Kent and Medway district authorities through the Kent & Medway Air Quality Partnership on air quality issues across Kent.
KCC in partnership with Kent local authorities has produced the “Kent Environment Strategy 2010-13” 2, which considers air quality issues county-wide and includes the following objectives relevant to air quality:
� Meeting National Air Quality Objectives
� Reducing the impact on environmental health
� Planning new development appropriately
� Tackling transboundary pollution
The Kent Environment Strategy Progress Report (2007) provided an update with respect to progress with actions relating to air quality, as shown below:
� Despite reductions in some air pollutants, overall air quality in Kent is showing no clear improvement;
� Long-standing problems have been exacerbated by traffic growth, increased ozone pollution from distant sources and extreme weather such as heat waves which are becoming more likely as a result of global warming;
� The identification of new Air Quality Management Areas (AQMAs) is an indication of the problem – but only a first step in solving it;
� The effort going into ‘monitoring and action planning’ is still not being matched by ‘implementation’ of actual measures to improve air quality;
� Reducing emissions from HGV and car traffic remains the key challenge to improve air quality.
The Environment Strategy has been revised and a final version was to be published at the end of March 2011.
2 http://www.kent.gov.uk/environment_and_planning.aspx
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5 Planning Applications
The planning application for the proposed Kent International Gateway discussed in the 2010 Progress Report was refused in August 2010 following a public inquiry.
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6 Air Quality Planning Policies
Tonbridge and Malling Borough Council produced a Local Development Framework in July 2009, which was formally adopted on April 2010. The Air Quality Policies are detailed in the Managing Development and the Environment Development Plan Document (MDE DPD). including Policy SQ4, which states that:
“Development will only be permitted where all of the following criteria are met:
� the proposed use does not result in a significant deterioration of the air quality of the area, either individually or cumulatively with other proposals or existing uses in the vicinity;
� proposals would not result in the circumstances that would lead to the creation of a new Air Quality Management Area;
� proximity to existing potentially air polluting uses will not have a harmful effect on the proposed use; and
� there is no impact on the air quality of internationally, nationally and locally designated sites of nature conservation interest or appropriate mitigation is proposed to alleviate any such impact.”
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7 Local Transport Plans and Strategies
In 2011, KCC adopted its third Local Transport Plan (LTP3) which covers the period from 2011 to 2016. The LTP objectives related to A Safer and Healthier County “Prioritise spending to tackle Countywide problem sites including Air Quality Management Areas, crash cluster sites, and areas with high levels of health deprivation”. The report also states that “KCC will continue to work with the districts to assist in the development of Air Quality Action Plans (AQAPs) and consider appropriate mitigation measures which will then be put forward for inclusion in the annual Integrated Transport Programme”.
The Kent County Transport Strategy “Growth without Gridlock” was published in December 2010. The document provides strategies for the whole of Kent, but also some which are directly aimed at transport improvement within Tonbridge and Malling.
KCC has proposed several improvements to the current bus network in order to improve connectivity and promote the use of public transport. The following improvements have been outlined:
� Improvements in bus interchange;
� Bus Rapid Transport (BRT);
� Inter-urban coach service – to give all towns direct access to public transport;
� Local Bus Services – these will operate into the local communities with links to the inter-urban system; and
� Improvement to the rural bus network through rural interchange system.
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8 Climate Change Strategies
The Tonbridge and Malling Borough Council Climate Change Strategy 2008/113, outlined how the Council will adapt and prepare for future changes as well as reducing greenhouse gas emissions. Details of the Strategy are provided in the Progress Report 2010.
Tonbridge and Malling’s Climate Change Strategy 2008-2011 was due to be updated this year, however the decision has been taken not to proceed with the review as KCC are developing a Kent wide Climate Change Adaptation Plan through the Climate Change Network, which if supported by the districts will lead to the partnership working with KCC.. The draft Adaptation Plan does contain a number of actions pertinent to the districts. Tonbridge & Malling B.C are proposing to link in with and actively support the KCC initiative.
3 Available at http://www.tmbc.gov.uk/cgi-bin/buildpage.pl?mysql=3006
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9 Implementation of Action Plans
To date Tonbridge and Malling Borough Council have produced one Air Quality Action Plan in respect of the M20 AQMA.
Tonbridge and Malling Borough Council are in the process of preparing an Action Plan to address pollution levels in the A26 Wateringbury AQMA, the Tonbridge High Street AQMA and the London Road, Aylesford AQMA. It is intended that the draft Action Plan will be submitted to Defra in May 2011.
Progress on the current Action Plan is detailed in Table 7.
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Table 7 – Action Plan Progress – AQMA 1
Key TMBC – Tonbridge and Malling Borough Council, RK – Rouse Kent KCC – Kent County Council, HA – Highways Agency LA – Local Authorities, KP – Kent Police, PO – Private Operators S – short term (0-2 years), M – medium term (2-5 years), L – long term (5+ years)
Action Plan
Measure / Target
Original (2003)
Time Scale Progress with Measure Comments
National / M20 Actions
Extend/improve rail freight and passenger infrastructure and service
Govt/ KCC
M-L
• Completion of the Channel Tunnel Rail Link (High Speed 1) in 2007 • Restoration of Eurostar services between Ashford and Brussels • Provision of High Speed Domestic Rail Services extending to Thanet and Dover from December 2009 • KCC continues to press central and international government to put more freight through the Channel Tunnel.
The County Council will develop a Freight Strategy to create a framework for more sustainable distribution alongside the preparation for the third Local Transport Plan which has to be finalised by March 2011. KCC published ‘Growth without Gridlock’ A transport delivery plan for Kent in December 2010.
Speed restriction and enforcement fixed variable
HA/KP HA/KP
M L
Variable speed restrictions introduced on M20 between junctions 4-6 in spring 2008.
Variable speed restrictions introduced.
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Key TMBC – Tonbridge and Malling Borough Council, RK – Rouse Kent KCC – Kent County Council, HA – Highways Agency LA – Local Authorities, KP – Kent Police, PO – Private Operators S – short term (0-2 years), M – medium term (2-5 years), L – long term (5+ years)
Action Plan
Measure / Target
Original (2003)
Time Scale Progress with Measure Comments
Enhanced screening
HA
M
Further 860 metres of barriers proposed in 2008-09 subject to funding.
Completed
Borough - Wide Actions
Planning Development Control – assessment of air quality impacts of proposed developments Development Plan review – enhanced policies to improve air quality
TMBC/ KCC TMBC/ KCC
On-going S-M
Applicants are required to undertake assessments where appropriate. The “Managing Development and the Environment Development Plan Document” was adopted in April 2010. SQ4 details the Air Quality Policy.
Transport Planning Improve public transport services
PO/KCC
S-M
• Kent Freedom Pass – pilot scheme achieved a 27% mode shift from car to bus for school journeys and now available across the County • Increasing bus passenger levels in Kent compared to national picture where bus use is declining outside London use is declining outside London
Work is progressing on implementing the Medway Valley Public Transport Strategy which will assist in providing an enhanced public transport system to address local congestion, sustainability and air quality issues along the A20 / A228 corridor. KCC published ‘Growth without Gridlock’ A transport delivery plan for Kent in December 2010
. £379,986 has been awarded by the
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Key TMBC – Tonbridge and Malling Borough Council, RK – Rouse Kent KCC – Kent County Council, HA – Highways Agency LA – Local Authorities, KP – Kent Police, PO – Private Operators S – short term (0-2 years), M – medium term (2-5 years), L – long term (5+ years)
Action Plan
Measure / Target
Original (2003)
Time Scale Progress with Measure Comments
Improved public transport infrastructure Enhanced provisions for cycling and walking
KCC KCC/ TMBC
M-L S-L
government to KCC for increasing and improving bus servicing West Kent Hospitals Improvements include enhanced bus/rail interchange at West Malling station; improved bus stops/shelter and real time displays on A20 corridor & Routes 6 & 7; new bus priority measures on A20 / A228 corridor. A number of cycle links and pedestrian improvements have been implemented including better pedestrian facility at Tonbridge Train Station, pedestrian crossings and better links for cyclists & pedestrians into the Medway Valley Train Line.
Improvements part-funded by developer contributions. Funding has been secured for improvements from KCC’s Local Transport Plan and developer contributions. A cycling Strategy for Tonbridge & Malling has been prepared and undergone consultation which identifies a number of future routes that KCC will submit for funding.
Local Air Quality Management Air quality monitoring
TMBC LA
On-going
On-going monitoring coordinated through the Kent and Medway Air Quality Partnership.
Five year monitoring contract competitively tendered in 2006. New contractor – AEA Technology – contract extended for additional 2 years from April 2010. Current contract and requirements of network are being reviewed prior to the preparation of next contract
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Key TMBC – Tonbridge and Malling Borough Council, RK – Rouse Kent KCC – Kent County Council, HA – Highways Agency LA – Local Authorities, KP – Kent Police, PO – Private Operators S – short term (0-2 years), M – medium term (2-5 years), L – long term (5+ years)
Action Plan
Measure / Target
Original (2003)
Time Scale Progress with Measure Comments
Continued and enhanced partnership working
TMBC LA HA KCC EA
On-going
The Kent and Medway Air Quality Partnership provides an ongoing forum for the discussion and coordination of air quality issues.
documentation. Guest speakers invited to meetings have spoken on Low Emission Zones, Mitigation measures in new developments and topographical influence of PM10 concentrations.
Promotional Activities Improve dissemination of air quality information e.g. development of TMBC Web site Work with Health Authorities on information/advice on health effects
TMBC TMBC
S S-M
The air quality page on the TMBC website includes a link to the KAMAQMN site www.kentair.org which gives comprehensive, real-time and historic information on local air quality. On-going. The KAMAQP have established a health sub-group to look into health based AQ issues. Based on their work , this sub group is organising a seminar in October 2010.
Seminar entitled ‘Urban Change’ held in October 2010.
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10 Conclusions and Proposed Actions
10.1 Conclusions from New Monitoring Data
The Annual Progress Report has shown that results continue to exceed the annual mean NO2 objective in all six AQMAs declared across the Borough.
Outside the AQMAs, one site, TN12 (London Road, Wrotham Heath) just meets annual mean AQS objective for NO2 (39.9µg/m3). However the nearest relevant receptor is a property located 26m from the monitoring site. It is therefore unlikely that the NO2 AQS objectives will be exceeded at nearby properties and it is not necessary to proceed to a Detailed Assessment. The Council will consider moving the tube closer to relevant receptors.
Another site in Borough Green (TN70) recorded a significant exceedence of the NO2 annual mean AQS objective. The site had been monitored to be over the AQS objective in 2009 however as this was only based on four months of data the Council did not proceed to Detailed Assessment. Data for a full year has now been collected and two more tubes added to the site to give a robust average. As the site is still over the AQS objective Tonbridge and Malling BC will therefore need to proceed to a Detailed Assessment, for the area around Sevenoaks Road, Borough Green.
Two sites were shown to be exceeding 60µgm3 within the Wateringbury AQMA, which indicates that the hourly mean NO2 objective is likely to be exceeded in the area in addition to the annual mean objective. Thus the Council should consider amending the AQMA order to include the hourly mean objective.
10.2 Conclusions relating to New Local Developments
The Annual Progress Report has found no new developments that will require detailed consideration in relation to air quality.
10.3 Proposed Actions
Proposed actions from the Annual Progress Report are as follows:
� Continue the current monitoring programme. � Complete a Detailed Assessment for the Sevenoaks Road, Borough Green area.
� Consider the installation of a continuous monitor within the Wateringbury AQMA to
provide more robust data prior to amending the existing AQMA order to include declaration for the hourly mean NO2 objective in Wateringbury.
� Investigate the possibility of re- locating tube site TN12 closer to relevant receptors. � Proceed to an Updating and Screening Assessment in 2012.
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11 References
� Local Air Quality Management Technical Guidance LAQM.TG(09). February 2009. Published by Defra in partnership with the Scottish Government, Welsh Assembly Government and Department of the Environment Northern Ireland
� Local Air Quality Management Policy Guidance LAQM.PG(09). February 2009. Published by Defra in partnership with the Scottish Government, Welsh Assembly Government and Department of the Environment Northern Ireland
� Diffusion Tubes for Ambient NO2 Monitoring: Practical Guidance for Laboratories and Users, Report to Defra and the Devolved Administrations , February 2008
� Tonbridge and Malling Borough Council Updating and Screening Assessment 2009
� Tonbridge and Malling Borough Council Annual Progress Report 2010
� Growth without Gridlock: Integrated Transport Strategy for Kent, 2010. Kent County Council December 2010.
� Local Transport Plan for Kent, 2011-16. KCC, April 2011
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Appendices
Appendix A: QA:QC Data Diffusion Tube Bias Adjustment Factors
Diffusion tubes are supplied and analysed by Scientifics (part of ESG formerly Harwell Scientifics) utilising the 50% Triethanolamine (TEA) in acetone preparation method. A bias adjustment of 0.85 for year 2010 has been derived from the national bias adjustment calculator (Version 04/11).
Factor from Local Co-location Studies (if available)
Tonbridge and Malling Borough Council did not operate any co-location monitoring sites in 2010.
Discussion of Choice of Factor to Use
As Tonbridge and Malling BC does not have a co-location study, the national bias adjustment calculator has been used for bias adjustment of the 2010 diffusion tube data. This is consistent with previous LAQM reporting.
Short-term to Long-term Data adjustment
A number of the diffusion tubes monitoring locations were installed or discontinued part way through the year. As a consequence the data capture at these sites for 2010 was less than 75%. Average concentrations at these sites were annualised using the method outlined in Tevchnical Guidance LAQM.TG (09), based on results from NOx urban background continuous monitoring analysers installed in Kent. A summary of these reference sites and associated annualisation factors is provided in Table A.1.
Table A.1 - Summary of Annualisation Factors
Site
Uncorrected Diffusion
Tube Mean (µg/m 3)
Annualisation factor
Canterbury
Annualisation factor Thanet
Annualisation factor
Chatham
Average Annualisation
factor
Annualised Bias Adjusted Concentration
(µg/m 3)
7 58.4 0.895 0.868 0.947 0.903 44.8 16 43.9 0.955 0.902 1.059 0.972 36.3 28 45.0 0.969 0.922 1.125 1.006 38.4 76t 86.1 0.996 1.022 1.009 73.8 77t 83.5 0.996 1.022 1.009 71.6 74t 53.8 1.033 1.081 1.057 48.3 75t 57.2 1.033 1.081 1.057 51.4 46 35.6 0.955 0.902 1.059 0.972 29.4 50 53.7 0.955 0.902 1.059 0.972 44.3 65t 45.4 0.955 0.902 1.059 0.972 37.5 66t 45.5 0.955 0.902 1.059 0.972 37.6 67 36.0 0.955 0.902 1.059 0.972 29.7 69 39.1 0.955 0.902 1.059 0.972 32.3 72t 58.4 1.033 1.081 1.057 52.5
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Site
Uncorrected Diffusion
Tube Mean (µg/m 3)
Annualisation factor
Canterbury
Annualisation factor Thanet
Annualisation factor
Chatham
Average Annualisation
factor
Annualised Bias Adjusted Concentration
(µg/m 3)
73t 56.2 1.033 1.081 1.057 50.5 71 42.1 0.955 0.902 1.059 0.972 34.8 78 42.5 1.033 1.081 1.057 38.2 79 40.0 1.033 1.081 1.057 36.0 80 47.8 0.798 0.848 0.754 0.800 32.5
QA/QC of diffusion tube monitoring
Tube preparation and analysis follows operating procedure HS/WI/1015 (NO2). Nitrogen dioxide analysis procedures are compliant with the Diffusion Tubes for Ambient NO2 Monitoring: Practical Guidance for users and laboratories (February 2008).
Scientifics participates in the Workplace Analysis Scheme for Proficiency (WASP) for NO2 diffusion tube analysis and the Annual Field Inter-Comparison Exercise. These provide strict performance criteria for participating laboratories to meet, thereby ensuring NO2 concentrations reported are of a high calibre. In 2010 the Inter-Comparison rating for Harwell Scientifics was “good”. The 2010 WASP rounds have not yet been made available. However, for the latest rounds (covering April 2009 to April 2010), Scientifics performance was ”good”.
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Appendix B – Monitoring Data
Table A.2 - 2010 Passive Monitoring Monthly Mean Measurements (µg/m 3)
Tube ID Description Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec Count Average
Bias Adjusted Finalised Average (µg/m 3)
5 Hall Rd, Aylesford
58.7 66.3 64.2 50.5 41.2 46.0 37.9 48.6 52.5 49.3 67.8 61.7 12.0 53.7 45.7
7
New Hythe Lane (Church
Farm), Larkfield
65.4 60.2 50.0 59.8 47.3 57.0 69.2 7.0 58.4 44.8
10 Offham Road, West Malling
39.4 29.0 25.3 22.8 13.2 18.9 13.3 15.0 22.5 25.2 40.2 38.0 12.0 25.2 21.4
12 London Rd, Wrotham
Heath 52.8 46.6 38.7 33.5 33.9 40.8 58.0 50.9 39.0 63.0 59.4 11.0 47.0 39.9
16
High St Tonbridge (Avebury Avenue)
50.8 46.4 49.7 37.9 34.6 5.0 43.9 36.3
18 Wilson Rd Tonbridge
34.2 10.0 19.8 17.2 13.7 11.7 10.4 12.9 17.7 20.9 36.0 30.4 12.0 19.6 16.6
28 Bell Lane, Ditton 52.9 50.2 41.6 35.1 4.0 45.0 38.4
29 Station Rd, Aylesford
55.2 52.8 44.8 48.6 41.5 45.3 19.4 29.2 37.7 38.4 56.1 53.8 12.0 43.6 37.0
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Tube ID Description Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec Count Average
Bias Adjusted Finalised Average (µg/m 3)
30 Teapot Lane Aylesford
68.4 60.5 54.8 72.1 59.9 16.1 26.3 39.0 50.4 46.7 67.8 11.0 51.1 43.4
33
Tonbridge Rd, Wateringbury
(Red Hill Corner)
85.2 86.8 71.9 68.9 53.2 69.2 49.0 59.2 74.5 72.1 92.9 93.2 12.0 73.0 62.1
35 High St
Tonbridge no 35 WHSmith
63.2 63.3 61.7 54.9 50.6 48.3 39.1 41.7 48.8 52.0 57.8 63.3 12.0 53.7 45.7
42t
Tonbridge Rd, Wateringbury
(Opposite Garage)
87.8 89.6 76.2 75.5 76.5 70.3 53.3 89.6 82.4 106.8 103.4 11.0 82.9 70.4
76t
Tonbridge Rd, Wateringbury
(Opposite Garage)
84.5 55.5 84.2 83.7 105.2 103.7 6.0 86.1 73.8
77t
Tonbridge Rd, Wateringbury
(Opposite Garage)
78.4 61.7 79.9 77.8 107.2 95.8 6.0 83.5 71.6
43 Tonbridge Rd, Wateringbury
(Red Hill) 57.3 53.3 51.1 40.6 40.6 44.6 43.5 56.4 53.4 51.4 58.3 61.0 12.0 51.0 43.3
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Tube ID Description Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec Count Average
Bias Adjusted Finalised Average (µg/m 3)
44 High St
Tonbridge no 46a
61.3 65.0 65.9 48.5 49.6 47.1 42.7 54.3 55.3 49.3 65.8 65.3 12.0 55.8 47.5
45t High St
Tonbridge no 10
71.5 67.8 64.3 55.4 47.0 45.4 45.7 48.8 60.3 55.6 81.6 51.3 12.0 57.9 49.2
74t High St
Tonbridge no 10
50.2 39.9 44.1 55.8 54.1 69.8 62.4 7.0 53.8 48.3
75t High St
Tonbridge no 10
53.3 48.2 51.0 56.3 54.9 67.5 69.2 7.0 57.2 51.4
46 Station Rd, Ditton no 3
43.3 43.2 34.5 30.8 26.2 5.0 35.6 29.4
47 London Rd, Ditton No 516
43.3 38.1 30.3 25.8 22.5 25.2 18.8 21.6 25.8 23.4 43.4 26.9 12.0 28.8 24.4
49t London Rd, Ditton Nos 527/529
48.7 51.2 46.8 38.6 39.5 37.9 40.3 42.3 43.8 53.2 51.8 11.0 44.9 38.2
53t London Rd, Ditton Nos 527/529
47.9 42.6 43.8 41.2 36.0 36.1 30.5 41.0 35.7 42.9 52.3 48.8 12.0 41.6 35.3
54t London Rd, Ditton Nos 527/529
50.8 48.8 45.3 50.1 37.9 27.4 28.3 38.4 43.8 32.3 53.5 53.3 12.0 42.5 36.1
50 High St
Tonbridge no 64 B Wise
60.9 57.8 60.0 43.0 46.7 5.0 53.7 44.3
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Tube ID Description Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec Count Average
Bias Adjusted Finalised Average (µg/m 3)
56 8c Pump Close
43.4 42.0 36.6 30.9 23.2 29.0 20.6 20.7 24.4 29.5 43.6 43.3 12.0 32.3 27.4
57t London Rd, Larkfield No
743 60.4 60.0 52.1 46.5 45.8 43.5 34.6 35.2 41.6 47.4 62.2 64.7 12.0 49.5 42.1
58t London Rd, Larkfield No
743 64.8 54.6 49.1 50.8 43.9 47.2 33.8 34.0 46.0 49.6 58.1 62.9 12.0 49.6 42.1
59t London Rd, Larkfield No
743 61.6 60.8 52.1 50.0 40.1 42.5 33.1 34.8 45.6 48.3 62.9 62.3 12.0 49.5 42.1
60t London Rd, Aylesford No
290 65.4 68.1 69.2 56.8 51.6 55.2 49.5 47.9 57.2 54.7 71.6 71.9 12.0 59.9 50.9
62t London Rd, Aylesford No
290 65.6 73.3 68.8 53.3 50.6 56.2 43.8 37.7 55.8 59.0 68.5 71.2 12.0 58.7 49.9
63t London Rd, Aylesford No
290 69.2 72.6 66.8 54.8 53.8 54.9 55.1 49.9 54.8 58.7 72.8 70.6 12.0 61.2 52.0
61 70 Hadlow Rd, Tonbridge
44.5 39.8 36.7 32.7 31.0 31.6 20.2 27.5 31.1 34.1 49.4 48.0 12.0 35.6 30.2
64t London Rd, Larkfield No
606 57.8 46.1 39.4 37.3 29.7 30.4 25.9 28.6 44.8 59.7 59.8 11.0 41.8 35.5
Tonbridge and Malling Borough Council LAQM Progress Report 2011
Bureau Veritas Air Quality AGGX4344410/JB/2703 48
Tube ID Description Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec Count Average
Bias Adjusted Finalised Average (µg/m 3)
65t London Rd, Larkfield No
606 60.5 52.8 44.9 33.7 35.0 5.0 45.4 37.5
66t London Rd, Larkfield No
606 57.1 54.0 44.1 37.8 34.4 5.0 45.5 37.6
67 17 McKenzie
Close, Aylesford
41.8 38.8 41.8 28.0 29.6 5.0 36.0 29.7
68 7 Hall Road, Aylesford
49.7 49.5 50.1 30.9 40.6 37.9 30.9 33.7 43.8 24.3 55.2 52.8 12.0 41.6 35.4
69 3 High Street,
Borough Green
49.9 41.8 34.4 39.9 29.3 5.0 39.1 32.3
70t 55 Sevenoaks Rd, Borough
Green 61.0 61.0 56.7 57.0 52.0 54.5 52.6 55.2 49.0 58.6 66.8 69.5 12.0 57.8 49.2
72t 55 Sevenoaks Rd, Borough
Green 56.3 56.5 54.4 56.9 55.0 67.9 62.1 7.0 58.4 52.5
73t 55 Sevenoaks Rd, Borough
Green 55.0 46.2 56.0 58.5 56.2 60.2 61.4 7.0 56.2 50.5
Tonbridge and Malling Borough Council LAQM Progress Report 2011
Bureau Veritas Air Quality AGGX4344410/JB/2703 49
Tube ID Description Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec Count Average
Bias Adjusted Finalised Average (µg/m 3)
71 2 Maidstone
Road, Borough Green
54.5 49.9 36.8 38.3 31.0 5.0 42.1 34.8
78 44 Maidstone
Road, Borough Green
45.9 25.3 28.5 41.6 41.5 57.8 57.2 7.0 42.5 38.2
79
Corner Rock Road/Maidstone Rd Borough
Green
35.6 24.7 36.5 38.2 40.6 50.6 53.9 7.0 40.0 36.0
80 Station Rd/
Teapot Lane, Aylesford
49.6 53.3 40.4 3.0 47.8 32.5