2012 air quality updating and screening assessmenttonbridge and malling borough council updating and...

2012 Air Quality Updating and Screening Assessment: Tonbridge and Malling Borough Council

August 2012

Tonbridge and Malling Borough Council Updating and Screening Assessment

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Client Tonbridge and Malling Borough Council

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1387/1/F2 3 August 2012 Final Report (version 2)

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Job Number J1387


J1387 1 of 48 August 2012

Executive Summary

This report fulfils the requirements of the Local Air Quality Management process as set out in

Part IV of the Environment Act (1995), the Air Quality Strategy for England, Scotland, Wales

and Northern Ireland 2007 and the relevant Policy and Technical Guidance documents.

This document is Tonbridge and Malling Borough Council’s fifth round Updating and

Screening Assessment. Results from monitoring by the Council are presented and sources of

air pollution are identified. The Updating and Screening Assessment determines those

changes since the last assessment, which could lead to the risk of an air quality objective

being exceeded.

Two junctions have been identified within Tonbridge and Malling Borough which may be at risk

of exceeding the annual mean nitrogen dioxide objective. A Detailed Assessment is required

in these locations which will, in the first instance be in the form of further monitoring.

Monitoring within the Borough has not identified any new exceedences outside existing

AQMA’s but has confirmed the need for the Detailed Assessment at Borough Green, which is

already underway.

Monitoring has also identified a potential exceedence of the 1-hour mean nitrogen dioxide

objective at locations within the existing Wateringbury AQMA. This AQMA will need to be

amended to include the 1-hour mean objective.

It should be noted that the Ditton AQMA has not experienced any exceedences of the annual

mean objective at locations with relevant exposure since 2006. Consideration could be given

to revoking this AQMA.


J1387 2 of 48 August 2012

Contents 1 Introduction .................................................................................................................... 4

1.1. Description of Local Authority Area .................................................................................. 4

1.2. Purpose of Report ............................................................................................................ 4

1.3. Air Quality Objectives ....................................................................................................... 5

1.4. Summary of Previous Review and Assessments ............................................................ 6

2 New Monitoring Data ................................................................................................... 11

2.1. Summary of Monitoring Undertaken .............................................................................. 11

2.2. Comparison of Monitoring Results with AQ Objectives ................................................. 22

3 Road Traffic Sources ................................................................................................... 32

3.1. Narrow Congested Streets with Residential Properties Close to the Kerb .................... 32

3.2. Busy Streets Where People May Spend 1-hour or More Close to Traffic ..................... 32

3.3. Roads with a High Flow of Buses and/or HGVs. ........................................................... 32

3.4. Junctions ........................................................................................................................ 32

3.5. New Roads Constructed or Proposed Since the Last Round of Review and Assessment .................................................................................................................... 33

3.6. Roads with Significantly Changed Traffic Flows ............................................................ 33

4 Other Transport Sources ............................................................................................. 34

4.1. Airports ........................................................................................................................... 34

4.2. Railways (Diesel and Steam Trains) .............................................................................. 34

4.3. Ports (Shipping).............................................................................................................. 34

5 Industrial Sources ........................................................................................................ 35

5.1. Industrial Installations ..................................................................................................... 35

5.2. Major Fuel (Petrol) Storage Depots ............................................................................... 36

5.3. Petrol Stations ................................................................................................................ 36

5.4. Poultry Farms ................................................................................................................. 36

6 Commercial and Domestic Sources ........................................................................... 37

6.1. Biomass Combustion – Individual Installations .............................................................. 37

6.2. Biomass Combustion – Combined Impacts ................................................................... 37

6.3. Domestic Solid-Fuel Burning .......................................................................................... 37

7 Fugitive or Uncontrolled Sources .............................................................................. 38

8 Conclusions and Proposed Actions .......................................................................... 39

8.1. Conclusions from New Monitoring Data ......................................................................... 39

8.2. Conclusions from Assessment of Sources .................................................................... 39

8.3. Proposed Actions ........................................................................................................... 39

9 References .................................................................................................................... 40

10 Appendices ................................................................................................................... 41


J1387 3 of 48 August 2012

Tables

Table 1.1: Air Quality Objectives included in Regulations for the purpose of LAQM in England ...... 5

Table 2.1: Details of Automatic Monitoring Site .............................................................................. 12

Table 2.2: Details of Non-Automatic Monitoring Sites .................................................................... 19

Table 2.3: Results of Automatic Monitoring of Nitrogen Dioxide: Comparison with Annual Mean Objective (2009 – 2011) ....................................................................................... 22

Table 2.4: Results of Automatic Monitoring for Nitrogen Dioxide: Comparison with 1-hour mean Objective (2009 – 2011) ....................................................................................... 23

Table 2.5: Results of Nitrogen Dioxide Diffusion Tubes in 2011..................................................... 25

Table 2.6: Results of Nitrogen Dioxide Diffusion Tubes (2009 to 2011) ......................................... 28

Figures

Figure 1: Map of Aylesford AQMA ..................................................................................................... 7

Figure 2: Map of Ditton AQMA ........................................................................................................... 8

Figure 3: Map of Larkfield AQMA ....................................................................................................... 8

Figure 4: Map of M20 AQMA ............................................................................................................. 9

Figure 5: Map of Tonbridge AQMA .................................................................................................... 9

Figure 6: Map of Wateringbury AQMA ............................................................................................. 10

Figure 7: Map of Tonbridge Automatic Monitoring Site ................................................................... 11

Figure 8: Map of Non-Automatic Monitoring Sites in Tonbridge ...................................................... 14

Figure 9: Map of Non-Automatic Monitoring Sites in Wateringbury ................................................. 15

Figure 10: Map of Non-Automatic Monitoring Sites in Borough Green............................................ 16

Figure 11: Map of Non-Automatic Monitoring Site in Wrotham Heath ............................................. 17

Figure 12: Map of Non-Automatic Monitoring Sites in West Malling ................................................ 17

Figure 13: Map of Non-Automatic Monitoring Sites in Larkfield and Ditton ..................................... 18

Figure 14: Trend in Annual Mean Nitrogen Dioxide Concentrations at Automatic Monitoring Site ................................................................................................................................. 22


J1387 4 of 48 August 2012

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 in relation to road traffic emissions of nitrogen

oxides and, in addition, one area (M20 corridor) for particulate matter (PM10). Other pollution

sources, including commercial, industrial and domestic sources, also make a contribution to

background pollution concentrations.

1.2. Purpose of Report

This report fulfils the requirements of the Local Air Quality Management process as set out in

Part IV of the Environment Act (1995), the Air Quality Strategy for England, Scotland, Wales

and Northern Ireland 2007 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 exceedences are considered likely, the local authority must then 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.

The objective of this Updating and Screening Assessment is to identify any matters that have

changed which may lead to a risk of an air quality objective being exceeded. A checklist

approach and screening tools are used to identify significant new sources or changes and

whether there is a need for a Detailed Assessment. The Updating and Screening Assessment

should provide an update of any outstanding information requested previously in Review and

Assessment reports.


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1.3. Air Quality Objectives

The air quality objectives applicable to LAQM in England are set out in the Air Quality

(England) Regulations 2000 (SI 928) and Air Quality (England) (Amendment) Regulations

2002 (SI 3043), and are summarised in Table 1.1. This table shows the objectives in units of

micrograms per cubic metre g/m3 (milligrams per cubic metre, mg/m3 for carbon monoxide)

with the number of exceedences in each year that are permitted (where applicable).

Table 1.1: Air Quality Objectives included in Regulations for the purpose of LAQM in England

Pollutant Air Quality Objective Date to be achieved

by Concentration Measured as

Benzene 16.25 µg/m3 Running annual mean 31.12.2003

5.00 µg/m3 Running annual mean 31.12.2010

1,3-Butadiene 2.25 µg/m3 Running annual mean 31.12.2003

Carbon monoxide 10.0 mg/m

3 Running 8-hour mean 31.12.2003

Lead 0.5 µg/m3 Annual mean 31.12.2004

0.25 µg/m3 Annual mean 31.12.2008

Nitrogen dioxide

200 µg/m3 not to be exceeded more than 18

times a year 1-hour mean 31.12.2005

40 µg/m3 Annual mean 31.12.2005

Particles (PM10)

(gravimetric)

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


40 µg/m3 Annual mean 31.12.2004

Sulphur dioxide






times a year 15-minute mean 31.12.2005


J1387 6 of 48 August 2012

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 concluded that it was necessary to declare an Air

Quality Management Area (AQMA) for nitrogen dioxide and PM10 along the M20 corridor at

Larkfield, Ditton and Aylesford due to road traffic emissions (Figure 4). An Air Quality Action

Plan is in place to improve air quality within the M20 AQMA (Tonbridge and Malling Borough

Council, 2011), in partnership with the Highways Agency.

The second round commenced in 2003 with the Updating and Screening Assessment and

concluded that there was a risk of exceedence of the nitrogen dioxide annual mean objective

at the nearest receptors to the:

Tonbridge High Street (southern end: Figure 5 ),

A26 Tonbridge Road/Red Hill junction, Wateringbury (Figure 6), and

A20 London Road/Station Road junction, Ditton (Figure 2).

Following a Detailed Assessment, 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 nitrogen dioxide

objective in these three AQMA areas. Tonbridge & Malling Borough Council is working in

partnership with Kent County Council to implement actions to improve air quality through the

Local Transport Plan.

The third round of Review and Assessment began with an Updating and Screening

Assessment in 2006, which concluded that a Detailed Assessment was required for nitrogen

dioxide due to emissions from road traffic on London Road in Larkfield, Ditton and Aylesford.

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 (Figure 1 and Figure 3).

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 Annual Progress Report 2010 concluded that analysis of monitoring results indicated one

site exceeded the nitrogen dioxide annual mean objective, outside an AQMA. The site, TN70,

at 55 Sevenoaks Road in Borough Green, was a new site installed in 2009 following a

recommendation in the Further Assessment. The diffusion tube only had 4 months of data


J1387 7 of 48 August 2012

available for 2009, but there is relevant exposure at this location. It was recommended that

the Council should continue to monitor at this location, increasing the robustness of monitoring

at this and other relevant sites of exposure in the vicinity to aid future LAQM work. It was

recommended that the Council progress to a Detailed Assessment if monitoring demonstrates

a risk of exceedence of the annual mean objective once the full year’s dataset is collated.

The Annual Progress Report 2011 concluded that further monitoring around the Borough

Green area indicated a possible exceedence of the annual mean nitrogen dioxide objective

and a Detailed Assessment was recommended. This assessment is currently underway and

is expected to be completed shortly. The report also identified a diffusion tube site in

Wateringbury with an annual mean above 60 g/m3 which may indicate an exceedence of the

1-hour mean nitrogen dioxide objective. Further monitoring was recommended as was

amending the current AQMA at that location to include the 1-hour mean nitrogen dioxide

objective.

An Air Quality Action Plan was produced in early 2011, and it summarised the current status

of the air quality in Tonbridge and Malling’s six AQMAs, and set out various measures that

should be taken to improve the air quality in these areas. The document was reviewed by

relevant stakeholders during 2011.

Figure 1: Map of Aylesford AQMA


J1387 8 of 48 August 2012

Figure 2: Map of Ditton AQMA

Figure 3: Map of Larkfield AQMA


J1387 9 of 48 August 2012

Figure 4: Map of M20 AQMA

Figure 5: Map of Tonbridge AQMA


J1387 10 of 48 August 2012

Figure 6: Map of Wateringbury AQMA


J1387 11 of 48 August 2012

2 New Monitoring Data

2.1. Summary of Monitoring Undertaken

2.1.1. Automatic Monitoring Sites

Tonbridge and Malling Borough Council operate one automatic monitoring station, measuring

nitrogen dioxide, situated at a roadside site on Tonbridge High Street. Since the fourth round

Updating and Screening Assessment in 2009 there have been no changes to the Council’s

automatic monitoring site. Figure 7 and Table 2.1 give details of the automatic monitoring site

located in Tonbridge.

Figure 7: Map of Tonbridge Automatic Monitoring Site


J1387 12 of 48 August 2012

Table 2.1: Details of Automatic Monitoring Site

Site ID Site Type X OS Grid

Ref Y OS Grid

Ref Pollutants Monitored In AQMA?

Monitoring Technique

Relevant Exposure?

Distance to kerb of nearest

road Worst-case exposure?

Tonbridge Roadside 2

(ZT5) Roadside 558876 146185 NO2 Y Chemiluminescence Y (1 m) 2.2 m Y


J1387 13 of 48 August 2012

2.1.2. Non-Automatic Monitoring Sites

During 2011, Tonbridge and Malling Borough Council also monitored annual mean nitrogen

dioxide concentrations using passive diffusion tubes at 26 locations across the Borough, six of

which have triplicate sites. Figure 8 to Figure 13 and Table 2.2 give details of the diffusion

tubes within the borough during 2011.

Sites opened between beginning 2009 to end of 2011:

TN70,TN72,TN73 - 55 Sevenoaks Road (triplicate)

TN71 - 2 Maidstone Road, Borough Green

TN76,TN77 - Tonbridge Road, Wateringbury (opposite garage) added to TN42

to form triplicate

TN74,TN75 - 10 High Street, Tonbridge added to TN45 to form triplicate

TN69 - 3 High Street, Borough Green

TN78 - 44 Sevenoaks Road, Borough Green

TN79 - Corner Rock Road/ Sevenoaks Road, Borough Green

TN80 - Station Road/Teapot Lane

Sites closed between beginning 2009 to end of 2011:

TN16 - Avebury Avenue, Tonbridge

TN28 - Bell Lane, Ditton

TN46 - 3 Station Road, Ditton

TN50 - 64 High Street (B-Wise), Tonbridge

TN69 - 3 High Street, Borough Green

TN67 - 17 McKenzie Close Aylesford

TN 65, 66 - 606 London Road (from triplicate to single tube)

TN71 - 2 Maidstone Road, Borough Green


J1387 14 of 48 August 2012

Figure 8: Map of Non-Automatic Monitoring Sites in Tonbridge


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Figure 9: Map of Non-Automatic Monitoring Sites in Wateringbury


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Figure 10: Map of Non-Automatic Monitoring Sites in Borough Green


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Figure 11: Map of Non-Automatic Monitoring Site in Wrotham Heath

Figure 12: Map of Non-Automatic Monitoring Sites in West Malling


J1387 18 of 48 August 2012

Figure 13: Map of Non-Automatic Monitoring Sites in Larkfield and Ditton


J1387 19 of 48 August 2012

Table 2.2: Details of Non-Automatic Monitoring Sites

Site Name Site ID Site Type

X OS Grid Ref

Y OS Grid Ref

Pollutants Monitored

In AQMA?

Co-located with a

continuous analyser?

Relevant Exposure?

Distance to kerb of

nearest road

Does this location represent worst-case exposure?

Hall Road, Aylesford TN5 Roadside 572628 158566 NO2 Y N Y (5.4 m) 4.0 m Y

New Hythe Lane, Larkfield (Church

Farm) TN7 Roadside 570431 158937 NO2 Y N N (72m) 22.5 m N

Offham Road, West Malling TN10

Urban background 567617 157635 NO2 N N Y (11.2 m) 1.73 m Y

London Road, Wrotham Heath TN12 Kerbside 563784 158059 NO2 N N N (26.7 m)

1 1.7 m Y

Wilson Road, Tonbridge TN18

Urban Background 560263 148509 NO2 N N Y (5.9 m) 2.00 m Y

Station Road, Aylesford TN29 Roadside 571607 158715 NO2 Y N Y (6.1 m) 35.2 m Y

Teapot Lane, Aylesford TN30 Roadside 572035 158573 NO2 Y N N (16.5m) 17.3 m Y

Tonbridge Road, Wateringbury

(Red Hill Corner) TN33 Roadside 569201 153486 NO2 Y N Y (0 m) 1.25 m Y

High Street, Tonbridge (no 35,

WH Smith) TN35 Urban Centre 558948 146277 NO2 Y N Y (0 m) 3.80 m Y


J1387 20 of 48 August 2012


X OS Grid Ref

Y OS Grid Ref


In AQMA?

Co-located with a


Relevant Exposure?

Distance to kerb of

nearest road



(opposite garage)

TN42, TN76, TN77

Roadside 569226 153475 NO2 Y N Y (0 m) 1.30 m Y


(Red Hill ) TN43 Roadside 569187 153498 NO2 Y N Y (0 m) 2.60 m Y

46a High Street, Tonbridge TN44 Urban Centre 558929 146271 NO2 Y N Y (0 m) 3.30 m Y

10 High Street, Tonbridge

TN45, TN74, TN75

Urban Centre 558864 146166 NO2 Y N Y (0 m) 2.3 m Y

516 London Road, Ditton TN47 Roadside 571399 158375 NO2 Y N Y (0 m) 19.2 m Y

527/529 London Road, Ditton

TN49, TN53, TN54


8c Pump Close, Leybourne TN56 Roadside 568714 158301 NO2 N N Y (0 m) 14.5 m Y

743 London Road, Larkfield

TN57, TN58, TN59


290 London Road, Aylesford

TN60, TN62, TN63



J1387 21 of 48 August 2012


X OS Grid Ref

Y OS Grid Ref


In AQMA?

Co-located with a


Relevant Exposure?

Distance to kerb of

nearest road


70 Hadlow Road, Tonbridge TN61 Roadside 559572 147017 NO2 N N Y (0 m) 6 m Y

606 London Road, Larkfield TN64 Roadside 570948 158482 NO2 Y N Y (0 m) 3.2 m Y

7 Hall Road, Aylesford TN68 Roadside 572430 157975 NO2 Y N Y (0 m) 7.3 m Y

55 Sevenoaks Road, Borough

Green

TN70, TN72, TN73

Roadside 560569 157328 NO2 N N Y (0 m) 2.0 m Y


Green TN78 Roadside 560652 157298 NO2 N N Y (0 m) 2.0 m Y

Corner Rock Road/Sevenoaks Road, Borough

Green

TN79 Roadside 560670 157269 NO2 N N Y (0.8 m) 7.3 m Y

Station Rd/Teapot Lane,

Aylesford TN80 Roadside 572064 158642 NO2 Y N N (36 m) 31.2 m Y

Rowan Close, HA site HA223 Roadside 572215 158524 NO2 Y N Y (0 m) 17.4 m Y

1 Site has been re-located to be representative of relevant exposure as of January 2012


J1387 22 of 48 August 2012

2.2. Comparison of Monitoring Results with AQ Objectives

2.2.1. Nitrogen Dioxide

2.2.2. Automatic Monitoring Data

The recorded results from the Tonbridge Roadside 2 (ZT5) automatic monitoring station

(Table 2.3) show that the nitrogen dioxide concentrations were above the annual mean

objective from 2009 to 2011. Figure 14 shows the changes in annual average nitrogen

dioxide concentrations measured at this site between 2007 and 2011;Table 2.4 shows that

concentrations have been well below the 1-hour mean nitrogen dioxide objective for the last

three years.

Table 2.3: Results of Automatic Monitoring of Nitrogen Dioxide: Comparison with Annual Mean Objective (2009 – 2011)

Site ID Site Type Within

AQMA?

Valid Data Capture for

period of monitoring %a

Valid Data Capture 2011 % b

Annual Mean Concentration g/m3

2009 2010 2011 Tonbridge

Roadside 2 (ZT5)

Roadside Y 95.5 95.5 47 49 44.5

Objective 40 a i.e. data capture for the monitoring period, in cases where monitoring was only carried out for part of the year.

b i.e. data capture for the full calendar year (e.g. if monitoring was carried out for six months the maximum data capture for the full calendar year would be 50%.)

Figure 14: Trend in Annual Mean Nitrogen Dioxide Concentrations at Automatic Monitoring Site

30

35

40

45

50

55

2007 2008 2009 2010 2011

NO2 (ug/m3)



J1387 23 of 48 August 2012

Table 2.4: Results of Automatic Monitoring for Nitrogen Dioxide: Comparison with 1-hour mean Objective (2009 – 2011)

Site ID Site Type Within

AQMA?

Valid Data Capture for period of

monitoring %a

Valid Data Capture 2011

% b

Number of Exceedences of Hourly Mean (200 g/m3) 2009 2010 2011


(ZT5) Roadside Y 95.5 95.5 0 3 0

Objective 18 a i.e. data capture for the monitoring period, in cases where monitoring was only carried out for part of the year.



J1387 24 of 48 August 2012

2.2.3. Diffusion Tube Monitoring Data

The 2011 nitrogen dioxide diffusion tube data are summarised in Table 2.5, with the full

dataset of monthly mean values included in Appendix A1. Sites TN64 and HA223 have a data

capture rate of 75% or less, and have therefore been annualised using the method in Box 3.2

of TG(09). HA223 was monitored by the Highway Agency (funding was removed in May)

during January to April (the results are shown in Table A2.1 for reference only) and then taken

over by TMBC from June- December. The Highway Agency used a different laboratory for

their tube analysis than TMBC and thus the data is not compatible with TMBC’s diffusion tube

results and needed to be annualised. Details of the calculations are provided in Appendix A1.

The nitrogen dioxide concentrations measured by diffusion tubes show that the annual mean

objective was exceeded at 10 locations in 2011 compared to 13 locations in 2010. Only one

of these sites was outside of a currently declared AQMA. This was at a triplicate diffusion

tube site at 55 Sevenoaks Road, Borough Green, located on the façade of a relevant receptor.

A Detailed Assessment is currently being completed for this area.

There is one site where annual mean nitrogen concentrations exceed 60 µg/m3, which is an

indication of a potential exceedence of the 1-hour mean objective. This is at a triplicate site

on Tonbridge Road, Wateringbury. Comparison with 2009 and 2010 monitoring results (Table

2.6) shows that concentrations at this site were above 60 µg/m3 in 2009 and 2010, and it was

identified in the 2011 Progress Report that further work would need to be undertaken to

identify whether there is an exceedence of the 1-hour mean objective at this location.

Tonbridge and Malling Borough Council have not identified a practical location for a

continuous analyser at this site, and traffic data are not currently available to support a

detailed modelling study. It is therefore recommended that the Wateringbury AQMA be

amended to include the 1-hour mean nitrogen dioxide objective as a precautionary approach.


J1387 25 of 48 August 2012

Table 2.5: Results of Nitrogen Dioxide Diffusion Tubes in 2011

Site Name Site ID Site Type Within AQMA? Triplicate or Co-located

Tube?

Data Capture 2011 (%)

Data with less than 9

months has been

annualised

Confirm if data has been

distance corrected

(Y/N)

Annual mean concentration

(Bias Adjustment factor = 0.83)

2011 (g/m3)

Hall Road, Aylesford TN5 Roadside Y N 91.7 n/a N 43.3

New Hythe Lane, Larkfield (Church Farm) TN7 Roadside Y N 83.3 n/a N 29.9


Urban background N N 100 n/a N 17.5

London Road, Wrotham Heath TN12 Kerbside N N 100 n/a N 35.7

Wilson Road, Tonbridge TN18 Urban Background N N 100 n/a N 14.6

Station Road, Aylesford TN29 Roadside Y N 100 n/a N 27.9

Teapot Lane, Aylesford TN30 Roadside Y N 100 n/a N 36.3

Tonbridge Road, Wateringbury (Red Hill

Corner) TN33 Roadside Y N 100 n/a N 54.3

High Street, Tonbridge (no 35, WH Smith) TN35 Urban Centre Y N 100 n/a N 40.3

Tonbridge Road, Wateringbury (opposite

garage) TN42, TN76, TN77 Roadside Y Triplicate 100 n/a N 60.9

Tonbridge Road, Wateringbury (Red Hill ) TN43 Roadside Y N 100 n/a N 39.8


J1387 26 of 48 August 2012


Tube?



months has been

annualised


distance corrected

(Y/N)



2011 (g/m3)

46a High Street, Tonbridge TN44 Urban Centre Y N 100 n/a N 41.4

10 High Street, Tonbridge TN45, TN74, TN75 Urban Centre Y Triplicate 100 n/a N 44.9

516 London Road, Ditton TN47 Roadside Y N 100 n/a N 20.2

527/529 London Road, Ditton TN49, TN53, TN54 Roadside Y Triplicate 100 n/a N 34.2

8c Pump Close, Leybourne TN56 Roadside N N 100 n/a N 23.2

743 London Road, Larkfield TN57, TN58, TN59 Roadside Y Triplicate 100 n/a N 35.7

290 London Road, Aylesford TN60, TN62, TN63 Roadside Y Triplicate 100 n/a N 46.9

70 Hadlow Road, Tonbridge TN61 Roadside N N 100 n/a N 25.0

606 London Road, Larkfield TN64 Roadside Y N 33.3 Y N 31.3

7 Hall Road, Aylesford TN68 Roadside Y N 100 n/a N 32.8

55 Sevenoaks Road, Borough Green TN70, TN72, TN73 Roadside N Triplicate 91.7 n/a N 46.7

44 Sevenoaks Road, Borough Green TN78 Roadside N N 100 n/a N 30.9


J1387 27 of 48 August 2012


Tube?



months has been

annualised


distance corrected

(Y/N)



2011 (g/m3)

Corner Rock Road/Sevenoaks Road,

Borough Green TN79 Roadside Y N 83.3 n/a N 30.7

Station Rd/Teapot Lane, Aylesford TN80 Roadside Y N 100 n/a N 40.4

Rowan Close, HA site HA223 Roadside Y N 58.3 Y N 29.6 a i.e. data capture for the monitoring period, in cases where monitoring was only carried out for part of the year.


c Means should be “annualised” as in Box 3.2 of TG(09), if monitoring was not carried out for the full year.


J1387 28 of 48 August 2012

Table 2.6: Results of Nitrogen Dioxide Diffusion Tubes (2009 to 2011)

Site Name Site ID Site Type Within

AQMA?

Annual mean concentration (adjusted for bias) g/m3

2009 (Bias

Adjustment Factor =

0.81)

2010 (Bias

Adjustment Factor =

0.85)

2011 (Bias

Adjustment Factor =

0.83)

Hall Road, Aylesford TN5 Roadside Y 50.6 45.7 43.3

New Hythe Lane,

Larkfield (Church Farm)

TN7 Roadside Y 35.9 44.8 29.9


Urban background N 22.0 21.4 17.5

London Road, Wrotham

Heath TN12 Kerbside N 39.3 39.9 35.7


Urban Background N 19.2 16.6 14.6

Station Road, Aylesford TN29 Roadside Y 34.6 37.0 27.9

Teapot Lane, Aylesford TN30 Roadside Y 43.1 43.4 36.3

Tonbridge Road,

Wateringbury (Red Hill Corner)

TN33 Roadside Y 55.9 62.1 54.3

High Street, Tonbridge (no 35, WH Smith)

TN35 Urban Centre Y 45.8 45.7 40.3

Tonbridge Road,

Wateringbury (opposite garage)

TN42, TN76, TN77

Roadside Y 60.1 71.9 60.9

Tonbridge Road,

Wateringbury (Red Hill )

TN43 Roadside Y 39.6 43.3 39.8

46a High Street,

Tonbridge TN44 Urban Centre Y 48.6 47.5 41.4


J1387 29 of 48 August 2012


AQMA?


2009 (Bias

Adjustment Factor =

0.81)

2010 (Bias

Adjustment Factor =

0.85)

2011 (Bias

Adjustment Factor =

0.83)

10 High Street,

Tonbridge

TN45, TN74, TN75

Urban Centre Y 48.2

49.6 44.9

516 London Road, Ditton TN47 Roadside Y 33.8 24.4 20.2

527/529 London Road,

Ditton

TN49, TN53, TN54

Roadside Y 35.0 36.5 34.2

8c Pump Close,

Leybourne TN56 Roadside N 27.8 27.4 23.2

743 London Road,

Larkfield

TN57, TN58, TN59

Roadside Y 39.3 42.1 35.7

290 London Road,

Aylesford

TN60, TN62, TN63

Roadside Y 49.6 50.9 46.9

70 Hadlow Road,

Tonbridge TN61 Roadside N 30.5 30.2 25.0

606 London Road,

Larkfield TN64 Roadside Y 33.5 35.5 31.3

7 Hall Road, Aylesford TN68 Roadside Y 36.4 35.4 32.8

55 Sevenoaks Road,

Borough Green

TN70, TN72, TN73

Roadside N 51.0 50.7 46.7

44 Sevenoaks Road,

Borough Green

TN78 Roadside N n/a 38.2 30.9

Corner Rock Road/Seveno

aks Road, Borough Green

TN79 Roadside Y n/a 36.0 30.7


J1387 30 of 48 August 2012


AQMA?


2009 (Bias

Adjustment Factor =

0.81)

2010 (Bias

Adjustment Factor =

0.85)

2011 (Bias

Adjustment Factor =

0.83)

Station Rd/Teapot

Lane, Aylesford

TN80 Roadside N n/a 32.5 40.4

Rowan Close, HA site HA223 Roadside N 34.2

1 40.71 29.6 1 Results listed in blue, were analysed by the Highway Agency’s chosen laboratory so are not compatible with TMBC’s

data. The data has been listed here for reference only.


J1387 31 of 48 August 2012

2.2.4. PM10

No monitoring of PM10 was undertaken by Tonbridge and Malling Borough Council in 2011.

2.2.5. Sulphur Dioxide

No monitoring of sulphur dioxide was undertaken by Tonbridge and Malling Borough Council in

2011.

2.2.6. Benzene

No monitoring of benzene was undertaken by Tonbridge and Malling Borough Council in 2011.

2.2.7. Other pollutants monitored

No other monitoring was undertaken by Tonbridge and Malling Borough Council in 2011.

2.2.8. Summary of Compliance with AQS Objectives

Tonbridge and Malling Borough Council has measured concentrations of nitrogen dioxide above the annual mean objective on Sevenoaks Road, Borough Green at a relevant location outside of any AQMA and a Detailed Assessment for the area is already underway.

The Council has also identified a site where the nitrogen dioxide 1-hour mean objective may be exceeded at relevant locations in the Wateringbury AQMA, and will need to either proceed to a Detailed Assessment, or amend the AQMA to include the 1-hour mean objective.


J1387 32 of 48 August 2012

3 Road Traffic Sources

3.1. Narrow Congested Streets with Residential Properties Close to the Kerb

The criteria for assessing narrow congested streets are set out in Box 5.3, section A1 of TG(09).

Narrow congested streets were considered in previous Updating and Screening Assessments and

no such locations were identified.

Tonbridge and Malling Borough Council confirms that there are no new/newly identified congested streets with a flow above 5,000 vehicles per day and residential properties close to the kerb, that have not been adequately considered in previous rounds of Review and Assessment.

3.2. Busy Streets Where People May Spend 1-hour or More Close to Traffic

The criteria for assessing busy streets relevant for the hourly nitrogen dioxide objective are set out

in Box 5.3, section A2 of TG(09). Busy streets where people may spend 1-hour or more close to

traffic were considered in the previous Updating and Screening Assessment.

Tonbridge and Malling Borough Council confirms that there are no new/newly identified busy streets where people may spend 1 hour or more close to traffic.

3.3. Roads with a High Flow of Buses and/or HGVs.

The criteria for assessing roads with high flows of buses and/ or HGVs are set out in Box 5.3,

section A3 of TG(09). Roads with a high flow of buses and/or HGVs were considered in previous

Updating and Screening Assessments and no such locations identified.

Tonbridge and Malling Borough Council confirms that there are no new/newly identified roads with high flows of buses/HDVs.

3.4. Junctions

The criteria for assessing junctions are set out in Box 5.3, section A4 of TG(09). Tonbridge and

Malling Borough Council have identified two busy junctions that have not previously been

assessed.

The London Road (B245) / Shipbourne Road (A227) junction in Tonbridge has relevant exposure

within 20 m of the kerb and will therefore need to be considered as part of a Detailed Assessment.

As there is currently no monitoring at this junction, it is therefore recommended that the Detailed


J1387 33 of 48 August 2012

Assessment be in the form of monitoring in the first instance, with further investigations being

required if monitoring suggests there may be an exceedence of an objective.

The High Street / Bordyke junction in Tonbridge also has relevant exposure close to the junction

and therefore a Detailed Assessment is required for this location. As there is currently no

monitoring at this junction, it is therefore recommended that the Detailed Assessment be in the

form of monitoring in the first instance, with further investigations being required if monitoring

suggests there may be an exceedence of an objective.

Tonbridge an Malling Borough Council has assessed new/newly identified junctions meeting the criteria in Section A.4 of Box 5.3 in TG(09), and concluded that it will be necessary to proceed to a Detailed Assessment (to be in the form of monitoring in the first instance) for Nitrogen Dioxide and PM10.

3.5. New Roads Constructed or Proposed Since the Last Round of Review and Assessment

The criteria for assessing new roads are set out in Box 5.3, section A5 of TG(09) and are

unchanged from previous rounds of Review and Assessment. There have been no new roads

identified within Tonbridge and Malling.

Tonbridge and Malling Borough Council confirms that there are no new/proposed roads.

3.6. Roads with Significantly Changed Traffic Flows

The criteria for assessing roads with significantly changed traffic flows are set out in Box 5.3,

section A6 of TG(09). The predictions of increased traffic do not exceed 25% on roads with more

than 10,000 vpd. There have been no new roads identified within Tonbridge and Malling.

Tonbridge and Malling Borough Council confirms that there are no new/newly identified roads with significantly changed traffic flows

3.6.1. Bus and Coach Stations

The criteria for bus and coach stations are set out in Box 5.3, section A7 of TG(09). Bus and

coach stations were considered in previous Updating and Screening Assessments and no such

locations identified.

Tonbridge and Malling Borough Council confirms that there are no relevant bus stations in the Local Authority area.


J1387 34 of 48 August 2012

4 Other Transport Sources

4.1. Airports

The criteria for assessing airports are set out in Box 5.4, section B1 of TG(09). Airports were

considered in previous Updating and Screening Assessments and no such locations identified.

Tonbridge and Malling Borough Council confirms that there are no airports in the Local Authority area.

4.2. Railways (Diesel and Steam Trains)

4.2.1. Stationary Trains

The criteria for assessing stationary locomotives are set out in Box 5.4, section B2 of TG(09)

(Approach 1). There are no locations in Tonbridge and Malling borough where trains are stationary

for 15 minutes or more, more than three times a day.

Tonbridge and Malling Borough Council confirms that there are no locations where diesel or steam trains are regularly stationary for periods of 15 minutes or more, with potential for relevant exposure within 15m.

4.2.2. Moving Trains

The criteria for assessing moving locomotives are set out in Box 5.4, section B2 of TG(09)

(Approach 2). No rail lines listed in Table 5.1 of the Technical Guidance LAQM.TG(09) pass

through Tonbridge and Malling borough.

Tonbridge and Malling Borough Council confirms that there are no locations with a large number of movements of diesel locomotives, and potential long-term relevant exposure within 30m.

4.3. Ports (Shipping)

The criteria for assessing ports are set out in Box 5.4, section B3 of TG(09) and are unchanged

from previous rounds of Review and Assessment. There is no shipping activity in Tonbridge and

Malling borough.

Tonbridge and Malling Borough Council confirms that there are no ports or shipping that meet the specified criteria within the Local Authority area.


J1387 35 of 48 August 2012

5 Industrial Sources

5.1. Industrial Installations

5.1.1. New or Proposed Installations for which an Air Quality Assessment has been Carried Out

The criteria for assessing industrial installations are set out in Box 5.5, section C1 of TG(09).

There are no new or proposed industrial installations within Tonbridge and Malling since the last

Updating and Screening Assessment for which an Air Quality Assessment has been carried out.

Tonbridge and Malling Borough Council confirms that there are no new or proposed industrial installations for which planning approval has been granted within its area or nearby in a neighbouring authority for which an air quality assessment has been carried out.

5.1.2. Existing Installations where Emissions have Increased Substantially or New Relevant Exposure has been Introduced

None of the industrial installations identified in previous Updating and Screening Assessments

have substantially increased emissions. There is new exposure within 100 m of an existing

industrial process, Drytech, located on Morley Road in Tonbridge, however there are unlikely to be

emissions from the facility which would affect residents.

Tonbridge and Malling Borough Council has assessed industrial installations with new relevant exposure in their vicinity, and concluded that it will not be necessary to proceed to a Detailed Assessment.

5.1.3. New or Significantly Changed Installations with No Previous Air Quality Assessment

The criteria for assessing industrial installations are set out in Box 5.5, section C1 of TG(09).

There are four new industrial installations within the borough since the last Updating and Screening

Assessment. These are:

Concrete batching plant on Hale Street, East Peckham

Surface Cleaning using VOC’s, Sovereign Way, Tonbridge

Waste Oil Burner, Branbridges Rd, East Peckham

Dry Cleaner, High St, Tonbridge


J1387 36 of 48 August 2012

None of these processes will significantly affect local air quality and therefore they do not need to

be assessed further.

There has also been a significant reduction of emissions from Muraspec (wall paper manufacturer)

over 2011 from ~350 tonnes to 100 tonnes of VOC use.

Tonbridge and Malling Borough Council has assessed new/proposed industrial installations, and concluded that it will not be necessary to proceed to a Detailed Assessment.

5.2. Major Fuel (Petrol) Storage Depots

The criteria for assessing major fuel (petrol) storage depots are set out in Box 5.5, section C2 of

TG(09). Major petrol storage depots were considered in the previous Updating and Screening

Assessments and no such locations identified.

There are no major fuel (petrol) storage depots within the Local Authority area.

5.3. Petrol Stations

The criteria for assessing petrol stations are set out in Box 5.5, section C3 of TG(09). There are no

petrol stations within Tonbridge and Malling that fulfil the criteria.

Tonbridge and Malling Borough Council confirms that there are no petrol stations meeting the specified criteria.

5.4. Poultry Farms

The criteria for assessing poultry farms are set out in Box 5.5, section C4 of TG(09). No farms

exceeding the relevant criteria (turkey units with greater than 100,000 birds, naturally ventilated

units with greater than 200,000 birds or mechanically ventilated units with greater than 400,000)

have been identified.

Tonbridge and Malling Borough Council confirms that there are no poultry farms meeting the specified criteria.


J1387 37 of 48 August 2012

6 Commercial and Domestic Sources

6.1. Biomass Combustion – Individual Installations

The criteria for assessing biomass combustion (individual installations) are set out in Box 5.8,

section D1 of TG(09). Tonbridge and Malling Borough Council has not identified any biomass

boilers between 50kW and 20MW.

Tonbridge and Malling District Council confirms that there are no biomass combustion plant in the Local Authority area.

6.2. Biomass Combustion – Combined Impacts

The criteria for assessing biomass combustion (combined impacts) are set out in Box 5.8, section

D2 of TG(09). The likelihood of areas of combined biomass combustion exceeding the criteria is

considered highly unlikely.

Tonbridge and Malling Borough Council confirms that there are no biomass combustion plant in the Local Authority area.

6.3. Domestic Solid-Fuel Burning

The criteria for assessing domestic solid-fuel burning are set out in Box 5.8, section D2 of TG(09)

Tonbridge and Malling Borough Council has not identified any areas where significant coal burning

takes place.

Tonbridge and Malling confirms that there are no areas of significant domestic fuel use in the Local Authority area.


J1387 38 of 48 August 2012

7 Fugitive or Uncontrolled Sources

The criteria for assessing fugitive or uncontrolled sources are set out in Box 5.10, section E1 of

TG(09). There are no quarries, landfill sites or other dusty operations in Tonbridge and Malling that

have the potential to have a significant effect on PM10 concentrations at residential properties.

Tonbridge and Malling Borough Council confirms that there are no potential sources of fugitive particulate matter emissions in the Local Authority area.


J1387 39 of 48 August 2012

8 Conclusions and Proposed Actions

8.1. Conclusions from New Monitoring Data

Tonbridge and Malling Borough Council has identified that the 1-hour mean nitrogen dioxide

objective may be exceeded within the Wateringbury AQMA. The Council will need to consider

amending the AQMA to include this objective.

No other exceedences have been identified outside of existing AQMA’s and areas already being

considered in a Detailed Assessment.

It should be noted that the Ditton AQMA has not experienced any exceedences of the annual mean

objective at locations with relevant exposure since 2006. Consideration could be given to revoking

this AQMA.

8.2. Conclusions from Assessment of Sources

Tonbridge and Malling Borough Council has identified two busy junctions in Tonbridge (London

Road / Shipbourne Road and High Street / Bordyke) where there is a risk of exceeding the annual

mean nitrogen dioxide objective. As there are no existing monitoring data for these locations

monitoring, in the first instance, should be carried out as part of a Detailed Assessment.

8.3. Proposed Actions

Proposed actions are:

Prepare 2013 Progress Report

Amend Wateringbury AQMA to include the 1-hour mean nitrogen dioxide objective, or

complete a Detailed Assessment for this area

Undertake monitoring at these Tonbridge locations: London Road (B245) / Shipbourne

Road (A227) junction and High Street / Bordyke junction, to inform Detailed Assessments

for these areas.

Submit the Detailed Assessment for Borough Green.


J1387 40 of 48 August 2012

9 References

Defra. (2009). Review & Assessment: Technical Guidance LAQM.TG(09). Defra.

Defra. (2007). The Air Quality Strategy for England, Scotland, Wales and Northern Ireland. Defra.

Environment Act. (1995). HMSO.

The Air Quality (England) (Amendment) Regulations, 2002, Statutory Instrument 3043. (2002). HMSO.

The Air Quality Regulations, 2000, Statutory Instrument 928. (2000). HMSO, London.

Tonbridge and Malling Borough Council. (2011). Air Quality Action Plan.

Tonbridge and Malling Borough Council. (2010). Annual Progress Report.

Tonbridge and Malling Borough Council. (2007). Detailed Assessment.

Tonbridge and Malling Borough Council. (2009). Further Assessment.

Tonbridge and Malling Borough Council. (2003). Updating and Screening Assessment.

Tonbridge and Malling Borough Council. (2006). Updating and Screening Assessment.


J1387 41 of 48 August 2012

10 Appendices

A1 QA:QC Data ................................................................................................................... 42

A2 Monthly Non-Automatic Data for 2011 ....................................................................... 44


J1387 42 of 48 August 2012

A1 QA:QC Data

Diffusion Tube Bias Adjustment Factors

Diffusion tubes used by Tonbridge and Malling Borough Council are supplied and analysed by

ESG Scientifics utilising the 50% Triethanolamine (TEA) in acetone preparation method. The

national bias adjustment factor, for diffusion tubes from this lab, with this preparation is 0.83 for

2011 (based on the National Diffusion Tube Bias Adjustment Factors Spreadsheet published in

June 2012) .

Discussion of Choice of Factor to Use

Tonbridge and Malling do not have any diffusion tubes co-located with the automatic monitor and

therefore no local bias adjustment factor is available. The national bias adjustment factor of 0.83

has therefore been used.

Short-term to Long-term Data adjustment

There are two diffusion tube sites (HA223 and TN64) in Tonbridge & Malling Borough for which

there is low data capture for 2011 (≤75% for diffusion tubes). Data for these sites have been

annualised (adjusted to represent the annual mean) following the guidance set out in Box 3.2 of

TG(09).

The annual mean for each of three automatic background sites was compared to a “period mean”

for the same site. The “period mean” is the mean for the period for which there is data and has

been calculated using the dates that the diffusion tubes were exposed. For each background site,

a ratio is then calculated between the annual mean and the period mean. The average ratio is

used to adjust the short term results to represent annual means.

The three sites chosen for use in the calculations are Canterbury (Chaucer School), Rochester

Stoke and Thurrock (Grays). These are all AURN urban background sites with relatively high data

capture for 2011 (>88% for each). Details of the sites used and the ratios calculated are provided

in Table A1.1.


J1387 43 of 48 August 2012

Table A1.1: Short-term to Long-term Data Adjustment

Site Canterbury Chaucer School Rochester

Stoke Thurrock

Grays Average

Site Type Urban Background Urban

Background Urban

Background

Data Capture 94.8 88.8 90.1

Annual Mean 15.3 19.0 27.8

Period Mean (Jan – Apr) 18.0 21.5 35.1

Ratio (Jan – Apr) 0.850 0.887 0.790 0.842

Period Mean (June – Dec) 14.4 17.7 25.4

Ratio (June – Dec) 1.060 1.072 1.092 1.075

QA/QC of automatic monitoring

Calibrations are carried out every two weeks on the continuous analyser ZT5 (Tonbridge Roadside

2), with ratification being carried out by AEA who manage the Kent & Medway Air Quality network.

QA/QC of diffusion tube monitoring

The samples have been analysed in accordance with Scientifics’ standard operating procedure

HS/WI/1015 Issue 15. This method meets the guidelines set out in DEFRA’s ‘Diffusion Tubes for

Ambient NO2 Monitoring: Practical Guidance.’

The tubes were prepared by spiking acetone:triethanolamine (50:50) onto the grids prior to the

tubes being assembled. The tubes were desorbed with distilled water and the extract analysed

using a segmented flow auto analyser with ultraviolet detection. All samples were received in good

condition, unless otherwise stated in the comments field of results table.

As set out in the practical guidance, the results were initially calculated assuming an ambient

temperature of 11oC, the reported values have been adjusted to 20oC to allow for direct

comparison with EU limits. The reported raw results (Appendix A2) have not been bias adjusted.

In the WASP intercomparison scheme for comparing spiked nitrogen dioxide diffusion tubes, ESG

Scientifics is currently ranked as a category “Good” laboratory.


J1387 44 of 48 August 2012

A2 Monthly Non-Automatic Data for 2011 Table A2.1: Monthly Non-Automatic Nitrogen Dioxide Monitoring Results


NO2 concentrations per month (2011) (µg/m3) a

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov

Dec Average (not bias

corrected)

Hall Road, Aylesford TN5 Roadside n/a 71.6 52.8 55.1 46.0 43.0 37.5 37.7 50.0 59.7 59.0 61.4 52.2

New Hythe Lane, Larkfield (Church Farm)

TN7 Roadside 63.5 n/a n/a 39.4 31.0 28.2 39.6 29.1 18.6 31.6 47.9 31.9 36.1


Urban background 35.8 29.8 27.9 21.3 14.8 13.9 12.7 15.4 10.3 22.3 27.4 22.1 21.1

London Road, Wrotham Heath TN12 Kerbside 57.3 53.3 36.0 39.1 35.1 32.3 28.9 38.4 41.2 50.4 45.7 58.2 43.0


Urban Background 28.1 26.2 21.2 14.5 9.3 10.7 10.1 11.1 11.1 18.8 27.9 22.4 17.6

Station Road, Aylesford TN29 Roadside 54.7 38.5 47.0 44.1 25.3 27.3 34.0 22.7 18.0 26.7 n/a 31.1 33.6

Teapot Lane, Aylesford TN30 Roadside 62.5 46.1 67.8 62.4 38.6 35.3 48.5 27.7 23.4 35.6 40.2 36.4 43.7


(Red Hill Corner) TN33 Roadside 72.5 78.2 81.5 64.0 53.7 54.7 54.1 50.3 46.3 71.6 86.9 70.9 65.4


J1387 45 of 48 August 2012





corrected)

High Street, Tonbridge (no 35, WH Smith)

TN35 Urban Centre 59.5 61.5 54.0 55.0 42.9 40.8 42.5 34.3 39.4 50.6 57.2 45.0 48.6


(opposite garage)

TN42 Roadside 102.9 83.1 82.1 80.7 51.7 55.4 65.4 62.7 59.9 78 94.7 69.2 73.8


(Red Hill ) TN43 Roadside 58.1 52.0 50.4 39.1 42.4 41.9 40.4 44.5 52.0 46.8 52.3 54.8 47.9

46a High Street, Tonbridge TN44 Urban Centre 64.9 62.4 49.4 49.6 43.2 47.8 46.3 46.9 39.9 49.9 42.2 55.7 49.9

10 High Street, Tonbridge TN45 Urban Centre n/a n/a 59.4 52.9 46.1 n/a 46.8 37.4 n/a 54.0 57.2 62.7 52.1

516 London Road, Ditton TN47 Roadside 36.1 27.4 27.4 26.2 18.2 18.8 18.7 16.9 17.0 25.6 33.1 27.2 24.4

527/529 London Road, Ditton TN49 Roadside 49.1 48.6 43.4 47.7 33.3 34.8 34.9 39.4 41.7 43.1 n/a 47.1 42.1

527/529 London Road, Ditton TN53 Roadside 49.1 48.8 36.9 44.0 32.1 39.6 34.2 38.0 38.5 44.6 37.0 44.8 40.6

527/529 London Road, Ditton TN54 Roadside 50.7 48.2 36.9 45.6 35.8 35.6 34.2 37.7 42.1 41.2 42.6 43.0 41.1

8c Pump Close, Leybourne TN56 Roadside 37.3 35.6 35.5 31.4 18.6 21.9 22.6 21.5 20.4 29.9 34.2 26.2 27.9


J1387 46 of 48 August 2012





corrected)

743 London Road, Larkfield TN57 Roadside 57.0 53.0 44.4 52.3 38.3 35.9 35.0 30.5 30.7 45.3 53.2 43.2 43.2



290 London Road, Aylesford TN60 Roadside 68.4 67.3 48.7 58.4 49.3 54.1 48.6 44.5 51.8 63.0 65.9 58.8 56.6

70 Hadlow Road, Tonbridge TN61 Roadside 36.1 38.3 41.6 35.1 23.9 26.6 24.2 22.6 17.4 29.5 35.1 31.1 30.1



606 London Road, Larkfield TN64 Roadside 51.8 45.8 44.3 37.3 n/a n/a n/a n/a n/a n/a n/a n/a 44.8

7 Hall Road, Aylesford TN68 Roadside 50.5 49.5 39.0 42.1 31.5 31.8 27.8 28.5 35.3 45.3 52.0 41.0 39.5


Green TN70 Roadside 66.9 58.5 53.9 54.0 53.1 50.2 n/a 49.8 51.4 59.4 54.7 62.5 55.9




J1387 47 of 48 August 2012





corrected)



10 High Street, Tonbridge TN74 Urban Centre n/a 66.6 53.7 47.1 42.9 46.8 46.5 49.0 47.4 54.0 56.7 58.2 51.7

10 High Street, Tonbridge TN75 Urban Centre 70.7 65.8 46.7 52.8 43.9 49.9 49.4 n/a n/a 55.5 71.2 62.2 56.8


(opposite garage)

TN76 Roadside 94.3 85.9 86.9 63.8 62.2 61.1 68.7 48.3 53.4 71.7 90.0 66.5 71.1


(opposite garage)

TN77 Roadside 100.8 84.7 89.2 72.8 62.8 61.8 74.3 62.1 58.3 86.6 81.5 66.2 75.1


Green TN78 Roadside 50.2 44.2 57.4 43.6 24.8 26.1 30.0 28.2 21.0 39.2 51.4 30.1 37.2

Corner Rock Road/Sevenoaks Road, Borough

Green

TN79 Roadside n/a 46.2 38.8 33.9 31.0 30.1 32.0 30.3 n/a 42.5 42.9 42.3 37.0

Station Rd/Teapot Lane,

Aylesford TN80 Roadside n/a 59.7 48.6 53.2 39.2 44.9 41.9 39.7 42.7 57.5 53.8 53.8 48.6


J1387 48 of 48 August 2012





corrected)

Rowan Close, HA site HA223 Roadside 47.5

1 32.6 33.2 47.3 n/a 27.2 42.2 31 22.9 33.4 48.3 27 33.1

1 Results listed in blue, were analysed by the Highway Agency’s chosen laboratory so are not compatible with TMBC’s data. The data has been listed here for reference

only.

2012 air quality updating and screening assessmenttonbridge and malling borough council updating and...

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