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Flintshire County Council LAQM Progress Report 2013 Bureau Veritas Air Quality July 2013

Flintshire County Council - WhatDoTheyKnow€¦ · Prepared by James Bellinger Signature Approved by Ben Warren Signature Project number AGGX7351442 File reference 2883 Disclaimer

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Page 1: Flintshire County Council - WhatDoTheyKnow€¦ · Prepared by James Bellinger Signature Approved by Ben Warren Signature Project number AGGX7351442 File reference 2883 Disclaimer

Flintshire County Council

LAQM Progress Report 2013

Bureau Veritas Air Quality

July 2013

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Bureau Veritas UK Limited

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Telephone: +44 (0) 207 902 6100

Fax: +44 (0) 207 902 6149

Registered in England 1758622

www.bureauveritas.co.uk

Registered Office

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SE1 1 LB

Document Control Sheet

Issue/Revision Issue 1 Issue 2 Remarks Draft Date July 2013 Submitted to Dave Jones Prepared by James Bellinger Signature

Approved by Ben Warren Signature

Project number AGGX7351442 File reference 2883

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 report author.

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Local Authority Officer

Dave. L. Jones

Department Environment

Address Pollution Control Section, County Hall, Mold, CH7 6NF

Telephone 01352 703399 e-mail [email protected] Report Reference number Flintshire_USA

Date July 2013

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LAQM Progress Report 2013 1

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 Annual Progress Report is a

requirement of the Fifth 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.

This Annual Progress Report considers all new monitoring data and assesses the

data against the Air Quality Strategy objectives. It also considers any changes that

may have an impact on air quality.

Monitoring carried out in 2012 indicated 5 potential new air quality hotspots in the

County. Due to uncertainty around bias correction factors, it is recommended that

2013 monitoring data is considered prior to making decisions on the requirement for

Detailed Assessment. The site at Rose Cottage previously assessed via Detailed

Assessment continued to exceed the objectives for NO2 annual mean in 2012. There

was also an exceedence of the hourly objective for NO2 at the Rose Cottage site.

It is recommended that the Council continue and supplement the monitoring regime

and proceed to Annual Progress Report 2014.

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LAQM Progress Report 2013 2

Table of Contents

1 Introduction 4

1.1 Description of Local Authority Area 4

1.2 Purpose of Progress Report 4

1.3 Air Quality Objectives 5

1.4 Summary of Previous Review and Assessments 7

2 New Monitoring Data 9

2.1 Summary of Monitoring Undertaken 9

2.2 Comparison of Monitoring Results with Air Quality Objectives 30

3 New Local Developments 47

3.1 Road Traffic Sources 47

3.2 Other Transport Sources 47

3.3 Industrial Sources 47

3.4 Commercial and Domestic Sources 48

3.5 New Developments with Fugitive or Uncontrolled Sources 48

4 Local / Regional Air Quality Strategy 49

5 Planning Applications 50

6 Air Quality Planning Policies 51

7 Local Transport Plans and Strategies 52

8 Climate Change Strategies 53

9 Implementation of Action Plans 54

10 Conclusions and Proposed Actions 55

10.1 Conclusions from New Monitoring Data 55

10.2 Conclusions relating to New Local Developments 55

10.3 Other Conclusions 55

10.4 Proposed Actions 55

11 References 57

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LAQM Progress Report 2013 3

List of Tables

Table 1 Air Quality Objectives included in Regulations for the purpose of LAQM in Wales 6

Table 2 Details of Automatic Monitoring Sites 11 Table 3 Details of Non- Automatic Monitoring Sites 23 Table 4 Results of Automatic Monitoring for NO2: Comparison with Annual Mean

Objective 31 Table 5 Results of Automatic Monitoring for NO2: Comparison with 1-hour Mean

Objective 32 Table 6 Results of NO2 Diffusion Tubes 2012 35 Table 7 Results of Automatic Monitoring for PM10: Comparison with Annual Mean

Objective 43 Table 8 Results of Automatic Monitoring for PM10: Comparison with 24-hour Mean

Objective 44

List of Figures

Figure 1 Map of Mold AURN Automatic Monitoring Site 9 Figure 2 Map of Rose Cottage Automatic Monitoring Site 10 Figure 3 Maps of Non-Automatic Monitoring Sites 13

Appendices

Appendix A: Quality Assurance / Quality Control (QA/QC) Data

Appendix B: Diffusion tube monitoring results

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LAQM Progress Report 2013 4

1 Introduction

1.1 Description of Local Authority Area

Flintshire is the north-eastern gateway to Wales and is bounded by Wrexham,

Denbighshire and Cheshire. Wirral Metropolitan Borough also shares a boundary

along the tidal estuary of the River Dee. The extreme north-west of the county is

bounded by the Irish Sea. The built-up area of the City of Chester straddles the

English/Welsh border at Saltney. The south-west of the county is bounded by the

Clwydian Hills which form a distinct boundary with Denbighshire. The population of

Flintshire was 150,077 in 2006 (Flintshire County Council Profile summary, August

2008).

1.2 Purpose of Progress Report

This report fulfils the requirements of the Local Air Quality Management (LAQM)

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.

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 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 Objective, the Local Authority (LA) should

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LAQM Progress Report 2013 5

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 LAQM in Wales are set out in the Air Quality

(Wales) Regulations 2000, No. 1940 (Wales 138), Air Quality (Amendment) (Wales)

Regulations 2002, No 3182 (Wales 298), and are shown in Table 1. This table shows

the objectives in units of microgrammes per cubic metre µg/m3 (milligrammes per

cubic metre, mg/m3 for carbon monoxide) with the number of exceedences in each

year that are permitted (where applicable).

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LAQM Progress Report 2013 6

Table 1 Air Quality Objectives included in Regulati ons for the purpose of LAQM in Wales

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 Annual mean 31.12.2010

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

Carbon monoxide 10 mg/m3 Running 8-hour

mean 31.12.2003

Lead 0.50 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

Particulate Matter (PM10)

(gravimetric)

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

year

24-hour mean 31.12.2004

40 µg/m3 Annual mean 31.12.2004

Sulphur dioxide

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

266 µg/m3, not to be exceeded more

than 35 times a year

15-minute mean 31.12.2005

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LAQM Progress Report 2013 7

1.4 Summary of Previous Review and Assessments

Previous rounds of review and assessment have identified areas in the County where

exceedences of the annual mean objectives have occurred. Detailed Assessments

have been carried out in 2004 and 2010 for PM10 and NO2. Both Detailed

Assessments concluded that no AQMA was required in the assessment area. No

AQMAs have been declared in the County.

The 2004 Detailed Assessment was carried out for PM10 and NO2 close to the A494

(Aston Hill). The 2006 USA identified the need for two Detailed Assessments at

quarries and one at a waste transfer station. The 2009 USA resolved the need to

carry out a Detailed Assessment at one of the quarries and the waste transfer

station. Monitoring results confirmed no exceedences of the air quality objectives at

these sites.

The 2010 Detailed Assessment carried out for the junction of the A5119 and A494 in

Mold concluded that no exceedences of the air quality objectives for NO2 or PM10

were likely at this site. Therefore no AQMA was needed at this location.

The 2010 Annual Progress Report concluded that a Detailed Assessment was

required for the area around Wrexham Road in Cefn Y Bedd. The report also

concluded that no Detailed Assessment was required for the Limestone Quarry

identified as in the 2006 USA as having potential to breach the PM10 air quality

objectives.

The 2012 Updating Screening and Assessment incorporated the data requirements

for the Annual Progress Report 2011 in order to bring the LAQM reporting up to date.

The report concluded there was no longer a need to carry out a Detailed Assessment

at Wrexham Road in Cefn Y Bedd. However it was identified that the concentrations

at Rose Cottage on the A115 in Mold were again exceeding the NO2 annual mean

objectives. Therefore a Detailed Assessment was required in this location.

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LAQM Progress Report 2013 8

A Detailed Assessment was carried out for the area around Rose Cottage in Mold in

2012. It was recommended an AQMA be declared at this location. The council have

not yet declared this AQMA, however modelling of potential measures to improve air

quality in this location has been undertaken to inform future plans for the junction.

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LAQM Progress Report 2013 9

2 New Monitoring Data

2.1 Summary of Monitoring Undertaken

2.1.1 Automatic Monitoring Sites

Automatic monitoring was carried out at two sites in the county during 2012. The

locations of monitoring are shown in Figure 1 and Figure 2. The Mold continuous

monitor is a suburban background monitor and is part of the Defra Automatic Urban

and Rural Network (AURN). The Rose Cottage continuous monitor is owned by the

council and located in an area of potential poor air quality.

Figure 1 Map of Mold AURN Automatic Monitoring Site

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LAQM Progress Report 2013 10

Figure 2 Map of Rose Cottage Automatic Monitoring S ite

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LAQM Progress Report 2013 11

Table 2 Details of Automatic Monitoring Sites

Site Name Site Type

X OS Grid Ref

Y OS Grid Ref

Pollutants Monitored

In AQMA?

Monitoring Technique

Relevant Exposure?

Distance to kerb

of nearest

road

Does this location

represent worst-case

exposure?

Mold AURN

Suburban Background 323549 363408 NOx, NO2,

Ozone N chemiluminescent Y (school) NA N/A

Rose Cottage Roadside 324374 365011

PM10,

N FDMS, chemiluminescent Y (2m) 3m Y NOx, NO2

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LAQM Progress Report 2013

2.1.2 Non-Automatic Monitoring Sites

During 2012 two changes to tube locations were made. No new tubes were added or

removed in 2012.

� Tube 3 moved across the dual carriageway in August 2012 to a site of

relevant exposure.

� Tube 44 changed location from 419 to 413 Chester Road, Oakenholt to a site

of relevant exposure.

During 2012 the tubes were analysed by Environmental Scientifics Group using 50%

TEA in Acetone.

With regards to the bias adjustment factor, a co-location study has been undertaken

at the Mold AURN background continuous monitoring site in 2012. The bias

adjustment factor from the co-location study was calculated as 1.05. The continuous

monitor only recorded 76% data capture in 2012 therefore as this is below the

recommended 90% data capture, the national bias adjustment factor of 0.84 has also

been applied in order to compare results.

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LAQM Progress Report 2013 13

Figure 3 Maps of Non-Automatic Monitoring Sites

County Wide Locations

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LAQM Progress Report 2013 14

Treffynnon/Holywell Area

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LAQM Progress Report 2013 15

Flint Area

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LAQM Progress Report 2013 16

Connah’s Quay Area

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LAQM Progress Report 2013 17

Mold Area

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LAQM Progress Report 2013 18

Broughton Area

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LAQM Progress Report 2013 19

Caergwrle Area

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LAQM Progress Report 2013 20

Flint Mountain Area

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LAQM Progress Report 2013 21

Rose Cottage Site

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LAQM Progress Report 2013 22

Outskirts of Chester

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LAQM Progress Report 2013 23

Table 3 Details of Non- Automatic Monitoring Sites

Tube ID Site Identifier Site Type X Y

In AQMA?

Relevant exposure?

Distance to kerb of nearest road

Worst case exposure?

Site1 10A Wrexham Road, Mold Kerbside 323799 363856 N Y 1m Y

Site2

1, St.Davids Close, Ewloe CH5 3AP Urban 329800 366701 N Y 35m Y

Site3 Aston Hill Roadside Kerbside 330726 367353 N N 1m N

Site4 4, Moorfield Court, Aston

Urban Background 330690 367094 N Y 116m Y

Site5 Mold Road, Connah's Quay Kerbside 326816 368777 N N 1m Y

Site6

Kelsterton Farm, Kelsterton Lane, Connah's Quay

Rural Background 327307 369858 N N 1m N

Site7 Kelsterton Road, Connah's Quay Kerbside 327165 371208 N Y 5m Y

Site8

86, Kelsterton Road, Connah's Quay CH5 4BJ

Urban Background 328032 370647 N Y 22m Y

Site9

Public House, Golftyn Lane, Connah's Quay

Urban Background 328249 370142 N Y 15m Y

Site10

Golftyn Lane,Connah's Quay

Rural Background 327976 369437 N N 1m N

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LAQM Progress Report 2013 24

Tube ID Site Identifier Site Type X Y

In AQMA?

Relevant exposure?

Distance to kerb of nearest road

Worst case exposure?

Site11

3 Davies Cottage, Mold Road, Alltami Kerbside 326641 365549 N Y 4m Y

Site12 20/22 Glynne Way, Hawarden Kerbside 331647 365737 N Y 1m Y

Site13

17, Linden Avenue,Connah's Quay CH5 4SN Urban 328988 369409 N Y 8m Y

Site14 Wepre Park, Connah's Quay

Rural Background 329409 368225 N N 290m N

Site15

47, Llwyni Drive, Connah's Quay CH5 4NJ

Urban Background 328282 368059 N Y 10m Y

Site16

4, Belvedere Close, Queensferry CH5 1TG Urban 331664 368029 N Y 20m Y

Site17 32 Chester Road West, Shotton Kerbside 330598 368922 N Y 4m Y

Site18

Victoria Crescent, Shotton

Urban Background 330319 368812 N Y 1m N

Site19

Gwylfa, Northop Rd., Flint Mountain Kerbside 323864 370367 N Y 3m Y

Site20

Coed Mawr Cott., Mostyn Road, Greenfield CH8 Kerbside 318670 378296 N Y 1m Y

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LAQM Progress Report 2013 25

Tube ID Site Identifier Site Type X Y

In AQMA?

Relevant exposure?

Distance to kerb of nearest road

Worst case exposure?

9DN

Site21

18, Kingsley Road, Garden City CH5 2JA

Urban Background 332549 369135 N Y 7m Y

Site22 Green Lane West, Sealand

Rural Background 333645 370898 N Y 70m N

Site23

Second Avenue, Deeside Industrial Estate (Valspar) Kerbside 332773 370984 N N 1m N

Site24

Llys Alun, Wrexham Road, Cefn Y Bedd Kerbside 331080 356105 N Y 2m Y

Site25

BASF, Deeside Industrial Park, Sealand Industrial 332044 371564 N N 20m N

Site26

Corus rear entrance DIP, Sealand Industrial 329922 370830 N N 1m N

Site27

89, Riverside Park, Garden City

Urban Background 333038 369050 N Y 15m Y

Site28

Yacht Club, Deeside Industrial Park, Sealand Industrial 331100 372200 N N 1m N

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LAQM Progress Report 2013 26

Tube ID Site Identifier Site Type X Y

In AQMA?

Relevant exposure?

Distance to kerb of nearest road

Worst case exposure?

Site29

Weighbridge Road, Deeside Industrial Park, Sealand Industrial 330500 371800 N N 1m N

Site30

28, Chester Road, Pentre, Deeside CH5 2DT Kerbside 332226 367725 N Y 5m Y

Site31

Croes Atti School, Chester Road, Flint. Kerbside 324946 372678 N Y 18m Y

Site32

Flint Town Council Buildings. Kerbside 324459 373141 N Y 6m N

Site33

133, Main Road, Broughton CH4 0NR Kerbside 333568 363511 N Y 1m Y

Site34

2, Coleshill Street, Holywell CH8 7UP Kerbside 318766 375759 N Y 1m Y

Site35

Sycamore House, Greenfield Road, Holywell CH8 7PY Kerbside 318735 376611 N Y 1m Y

Site36

43, Station Road, Queensferry CH5 1SU Kerbside 331806 368271 N Y 5m Y

Site37

Glendale Lodge, Rhydgaled, Mold A5119 Kerbside 324281 364931 N Y 4m Y

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LAQM Progress Report 2013 27

Tube ID Site Identifier Site Type X Y

In AQMA?

Relevant exposure?

Distance to kerb of nearest road

Worst case exposure?

Site38 5 Main Road, Broughton Urban 334131 364077 N Y 23m Y

Site39

Medical Centre, High Street, Caergwrle Kerbside 330436 357543 N Y 4m Y

Site40

1 Manor Road, Sealand CH5 2SB Kerbside 333732 369087 N Y 15m Y

Site41

Ty-Gwyn, A5118, Padeswood CH7 4JF Kerbside 328348 362413 N Y 15m N

Site42

Casa Sol, High Street, Bagillt CH6 6AP Kerbside 322672 374598 N Y 7m Y

Site43

9, Bryn Tirion, Rhewl-Mostyn CH8 9QW

Urban Background 315580 380348 N Y 15m Y

Site44

413 Chester Road, Oakenholt, Flint

Urban Background 325961 371823 N Y 15m Y

Site45

Belmont, Alltami, Nr. Mold CH7 6LG Kerbside 326800 365670 N Y 20m Y

Site46

22, Park View, Northop CH7 6DD

Urban Background 325141 368404 N Y 40m Y

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LAQM Progress Report 2013 28

Tube ID Site Identifier Site Type X Y

In AQMA?

Relevant exposure?

Distance to kerb of nearest road

Worst case exposure?

Site47

Dolwen, Chester Road, Sandycroft CH5 2DT Kerbside 332668 367378 N Y 15m Y

Site48

74, High Street, Saltney CH4 8SQ Kerbside 338282 365032 N Y 6m Y

Site49

31, The Rowans, Broughton CH4 0TD Kerbside 333528 363036 N Y 25m Y

Site50

Bryn Estyn, Wrexham Road, Hope LL12 9NB Kerbside 330976 358685 N Y 5m Y

Site51 7 Coleshill Street, Flint CH6 5BQ Kerbside 324201 372987 N Y 6m Y

Site52

Brampton, Mold Road, Buckley CH7 2NH Kerbside 327456 364019 N Y 8m Y

Site53

17, Mill Lane, Buckley CH7 3HA Kerbside 327849 364144 N Y 1m Y

Site54

Ysgol Glanrafon,Mold Tri-Colocation

Urban Background 323549 363408 N Y 40m N

Site55

Ysgol Glanrafon,Mold Tri-Colocation

Urban Background 323549 363408 N Y 40m N

Site56

Ysgol Glanrafon,Mold Tri-Colocation

Urban Background 323549 363408 N Y 40m N

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LAQM Progress Report 2013 29

Tube ID Site Identifier Site Type X Y

In AQMA?

Relevant exposure?

Distance to kerb of nearest road

Worst case exposure?

Site57

Rose Cottage Junction A5119/A494 Kerbside 324375 365007 N Y 1m Y

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LAQM Progress Report 2013 30

2.2 Comparison of Monitoring Results with Air Quali ty Objectives

2.2.1 Nitrogen Dioxide (NO 2)

Automatic Monitoring Data

During 2012 continuous monitoring was carried out at two locations. The results

from the two stations are presented below.

The concentration at the background site in Mold remained well below objective

concentration and has fallen slightly (~1µg/m3) to 10.3µg/m3 in 2012.

Concentrations at the Rose Cottage monitoring site have increased by 3µg/m3 in

2012. The concentration at the monitoring location in 2012 was 52.3µg/m3 which is

12.3µg/m3 over the NO2 annual mean objective. The hourly objective of 200µg/m3

not to be exceeded on more than 18 occasions has also been exceeded at the Rose

Cottage monitor in 2012. This result should be treated with some caution as this

objective has not been exceeded or come close to being exceeded in past years. It

is recommended that monitoring continues at this location.

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LAQM Progress Report 2013 31

Table 4 Results of Automatic Monitoring for NO 2: Comparison with Annual Mean Objective

Location Site Type Within AQMA?

Valid Data

Capture 2012 %

Annual Mean Concentration µg/m 3

2010 2011 2012

Mold AURN Suburban background

N 76.3 17.3 11 10.3

Rose Cottage Roadside N 96.8 49.9 49.3 52.3

In bold, exceedence of the NO2 hourly mean AQS objective (40µg/m3)

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LAQM Progress Report 2013 32

Table 5 Results of Automatic Monitoring for NO2: Co mparison with 1-hour Mean Objective

Location Site Type Within AQMA?

Valid Data

Capture 2010 %

Number of Exceedences of

Hourly Mean (200µg/m 3)

2010 2011 2012

Mold AURN Suburban

background N 30 0 (77) 0 0

Rose Cottage Roadside N 95 5 2 75

In bold, exceedence of the NO2 hourly mean AQS objective (200µg/m3 – not to be exceeded more than 18 times per year)

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Diffusion Tube Monitoring Data

Two sets of data have been presented for the monitoring data due to variations

caused by the bias adjustment factors. Discussion regarding factors is presented in

Appendix A.

During 2012 there were seven exceedences recorded at diffusion tube sites;

� Site 3 Aston Hill;

� Site 3 relocation;

� Site 11 3 Davies Cottage;

� Site 12 20/22 Glynne Way;

� Site 24 Llys Alun, Wrexham Road;

� Site 30 28 Chester Road; and

� Site 57 Rose Cottage Junction.

Site 3 was moved in September 2012 to a site of relevant exposure. The original site

recorded 8 months of data in 2012 with a concentration of 79.7µg/m3. As this was

not located at a site of relevant exposure, no Detailed Assessment is required at this

location. The new tube location on the opposite side of the dual carriage way is at a

site of relevant exposure. Monitoring was carried out at this location for four months

in 2012. The raw results and both sets of annualised and bias adjusted results are

close to or exceeding the air quality objective for NO2 annual mean concentrations. It

would be recommended that monitoring continue at this location and additional

monitoring be added in the locality. If exceedences are found in 2013, the Council

should carry out a Detailed Assessment at that location.

Site 11 located on the A494 has recorded a concentration of 44.9µg/m3 in 2012. This

site had 100% data capture in 2012 all with raw results in the region of 40µg/m3. It

would be recommended to install a duplicate tube at this location in order to improve

accuracy of reporting. Should this site continue to exceed the NO2 annual mean

objective in 2013 then the Council should carry out a Detailed Assessment.

Site 12 in Hawarden is located on a narrow B road in the centre of town. The results

in 2010 and 2011 both indicated the site was close to the objective levels of 40µg/m3.

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In 2012 the concentration based on 100% data capture and bias adjusted with the

local bias adjusted factor was 45.7µg/m3. As this exceedence is not shown when

the national bias factor is applied, and as data capture at the Mold monitoring station

was below 90%, it is again recommended that should this site continue to exceed the

NO2 annual mean objective in 2013 then the Council should carry out a Detailed

Assessment.

Site 24 in Cefn Y Bedd located on the A541 is on a narrow section of road before the

railway bridge. This site has been close to the objective for a number of years. It

would be recommended to continue monitoring at this location and add a duplicate

tube to improve data accuracy. If the concentrations are above 40µg/m3 in 2013 the

council should carry out a Detailed Assessment at this location.

Site 30 located on the B5129 marginally exceeded the NO2 annual mean objective in

2012. The site is located on the same road as Site 47 which was well below the

objective levels. As the exceedence at this location was marginal in 2012 it would be

recommended the council continue to monitor at this location and carry out a

Detailed Assessment in future if necessary.

Site 57 at Rose Cottage is known to be exceeding the air quality objectives. A

Detailed Assessment which recommended that an AQMA be declared for this

location was carried out in 2012. The council are currently considering all options for

this location with a view to declaring the AQMA.

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Table 6 Results of NO 2 Diffusion Tubes 2012

Tube ID Site Identifier Site Type Within

AQMA

Data Capture 2012 (months)

Annual mean concentration 2010 (bias adjusment factor 0.84)

Annual mean concentration 2011 (bias adjusment factor 0.83)

Annual mean concentration 2011 (bias adjusment factor 1.28)

Annual mean concentration 2012 (bias adjusment factor 0.84)

Annual mean concentration 2012 (bias adjusment factor 1.05)

Site1 10A Wrexham Road, Mold Kerbside N 10 33.4 27 41.7 30.2 37.8

Site2 1, St.Davids Close, Ewloe CH5 3AP

Urban N 12 20.3 20.7 31.9 20.6 25.7

Site3 Aston Hill Roadside Kerbside N 7 68.6 63.1 97.3 63.8 79.7

Site4 4, Moorfield Court, Aston

Urban Background N 12 29.5 17 26.3 17.0 21.2

Site5 Mold Road, Connah's Quay Kerbside N 11 10.8 11.7 18.1 11.1 13.9

Site6 Kelsterton Farm, Kelsterton Lane, Connah's Quay

Rural Background N 9 11.9 10.6 16.4 12.7 15.9

Site7 Kelsterton Road, Connah's Quay

Kerbside N 12 17.7 15.6 24 16.8 21.0

Site8 86, Kelsterton Road, Connah's Quay CH5 4BJ

Urban Background N 12 16.3 15.2 23.4 16.1 20.2

Site9 Public House, Golftyn Lane, Connah's Quay

Urban Background N 12 13.7 8.6 13.2 13.9 17.3

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Tube ID Site Identifier Site Type Within

AQMA

Data Capture 2012 (months)

Annual mean concentration 2010 (bias adjusment factor 0.84)

Annual mean concentration 2011 (bias adjusment factor 0.83)

Annual mean concentration 2011 (bias adjusment factor 1.28)

Annual mean concentration 2012 (bias adjusment factor 0.84)

Annual mean concentration 2012 (bias adjusment factor 1.05)

Site10 Golftyn Lane,Connah's Quay

Rural Background N 12 10.2 8.3 12.7 10.4 13.0

Site11 3 Davies Cottage, Mold Road, Alltami

Kerbside N 12 36.2 31.9 49.1 35.9 44.9

Site12 20/22 Glynne Way, Hawarden Kerbside N 12 39.3 36.3 56 36.6 45.7

Site13 17, Linden Avenue,Connah's Quay CH5 4SN

Urban N 11 14.9 13 20.1 13.3 16.7

Site14 Wepre Park, Connah's Quay

Rural Background N 12 12.2 9.1 14 9.5 11.9

Site15 47, Llwyni Drive, Connah's Quay CH5 4NJ

Urban Background N 10 14.2 13 20 14.0 17.5

Site16

4, Belvedere Close, Queensferry CH5 1TG

Urban N 12 30.2 29.8 46 30.0 37.5

Site17 32 Chester Road West, Shotton Kerbside N 12 32.3 25.8 39.7 26.7 33.3

Site18 Victoria Crescent, Shotton

Urban Background

N 12 16.4 16.8 25.9 15.6 19.6

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Tube ID Site Identifier Site Type Within

AQMA

Data Capture 2012 (months)

Annual mean concentration 2010 (bias adjusment factor 0.84)

Annual mean concentration 2011 (bias adjusment factor 0.83)

Annual mean concentration 2011 (bias adjusment factor 1.28)

Annual mean concentration 2012 (bias adjusment factor 0.84)

Annual mean concentration 2012 (bias adjusment factor 1.05)

Site19 Gwylfa, Northop Rd., Flint Mountain

Kerbside N 12 27.8 22 33.9 25.0 31.3

Site20

Coed Mawr Cott., Mostyn Road, Greenfield CH8 9DN

Kerbside N 12 26.7 23.4 36.1 25.0 31.2

Site21 18, Kingsley Road, Garden City CH5 2JA

Urban Background N 12 16.2 14.5 22.4 15.9 19.9

Site22 Green Lane West, Sealand

Rural Background

N 10 20.9 22 33.9 26.1 32.6

Site23

Second Avenue, Deeside Industrial Estate (Valspar)

Kerbside N 11 33.7 29.8 46 31.8 39.8

Site24 Llys Alun, Wrexham Road, Cefn Y Bedd

Kerbside N 12 34.3 35.8 55.3 36.7 45.9

Site25 BASF, Deeside Industrial Park, Sealand

Industrial N 12 22.3 19.7 30.3 20.2 25.2

Site26 Corus rear entrance DIP, Sealand

Industrial N 12 19.9 18.2 28 16.4 20.5

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Tube ID Site Identifier Site Type Within

AQMA

Data Capture 2012 (months)

Annual mean concentration 2010 (bias adjusment factor 0.84)

Annual mean concentration 2011 (bias adjusment factor 0.83)

Annual mean concentration 2011 (bias adjusment factor 1.28)

Annual mean concentration 2012 (bias adjusment factor 0.84)

Annual mean concentration 2012 (bias adjusment factor 1.05)

Site27 89, Riverside Park, Garden City

Urban Background N 12 23.8 20.8 32.2 24.3 30.4

Site28

Yacht Club, Deeside Industrial Park, Sealand

Industrial N 11 19.7 22.8 35.2 19.7 24.6

Site29

Weighbridge Road, Deeside Industrial Park, Sealand

Industrial N 12 20.7 17.3 26.7 18.9 23.6

Site30

28, Chester Road, Pentre, Deeside CH5 2DT

Kerbside N 12 32.5 31.4 48.5 32.0 40.1

Site31 Croes Atti School, Chester Road, Flint.

Kerbside N 8 16.4 16.9 26 16.4 20.5

Site32 Flint Town Council Buildings.

Kerbside N 11 23.8 23.9 36.9 22.2 27.7

Site33 133, Main Road, Broughton CH4 0NR

Kerbside N 10 27.4 27.4 42.2 27.8 34.7

Site34 2, Coleshill Street, Holywell CH8 7UP

Kerbside N 12 24.2 22.9 35.3 23.9 29.9

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Tube ID Site Identifier Site Type Within

AQMA

Data Capture 2012 (months)

Annual mean concentration 2010 (bias adjusment factor 0.84)

Annual mean concentration 2011 (bias adjusment factor 0.83)

Annual mean concentration 2011 (bias adjusment factor 1.28)

Annual mean concentration 2012 (bias adjusment factor 0.84)

Annual mean concentration 2012 (bias adjusment factor 1.05)

Site35

Sycamore House, Greenfield Road, Holywell CH8 7PY

Kerbside N 12 22.3 19.5 30.1 21.1 26.4

Site36 43, Station Road, Queensferry CH5 1SU

Kerbside N 12 27.8 24.2 37.3 25.5 31.9

Site37 Glendale Lodge, Rhydgaled, Mold A5119

Kerbside N 12 30.1 26.9 41.5 27.6 34.5

Site38 5 Main Road, Broughton

Urban N 12 29.9 19 29.4 19.4 24.2

Site39 Medical Centre, High Street, Caergwrle

Kerbside N 12 22.2 20.4 31.5 19.7 24.6

Site40 1 Manor Road, Sealand CH5 2SB

Kerbside N 12 19.8 16.3 25.2 17.2 21.5

Site41 Ty-Gwyn, A5118, Padeswood CH7 4JF

Kerbside N 12 12.1 10.3 15.9 11.6 14.5

Site42 Casa Sol, High Street, Bagillt CH6 6AP

Kerbside N 12 14.1 12.1 18.7 13.6 17.0

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Tube ID Site Identifier Site Type Within

AQMA

Data Capture 2012 (months)

Annual mean concentration 2010 (bias adjusment factor 0.84)

Annual mean concentration 2011 (bias adjusment factor 0.83)

Annual mean concentration 2011 (bias adjusment factor 1.28)

Annual mean concentration 2012 (bias adjusment factor 0.84)

Annual mean concentration 2012 (bias adjusment factor 1.05)

Site43 9, Bryn Tirion, Rhewl-Mostyn CH8 9QW

Urban Background N 12 9.7 8.2 12.6 9.2 11.4

Site44 419 Chester Road, Oakenholt, Flint

Urban Background N 9 22.3 32.1 49.5 26.0 32.5

Site45 Belmont, Alltami, Nr. Mold CH7 6LG

Kerbside N 12 19.3 18.2 28.1 18.5 23.2

Site46 22, Park View, Northop CH7 6DD

Urban Background N 12 16.2 13.5 20.8 14.9 18.6

Site47 Dolwen, Chester Road, Sandycroft CH5 2DT

Kerbside N 8 24.5 21.6 33.3 18.8 23.4

Site48 74, High Street, Saltney CH4 8SQ

Kerbside N 12 27.1 19.6 30.2 22.4 28.0

Site49 31, The Rowans, Broughton CH4 0TD

Kerbside N 12 22.1 20.6 31.8 20.4 25.6

Site50 Bryn Estyn, Wrexham Road, Hope LL12 9NB

Kerbside N 11 18.5 14.4 22.2 16.8 21.0

Site51 7 Coleshill Street, Flint CH6 5BQ Kerbside N 12 22.3 19.4 29.9 22.2 27.7

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Tube ID Site Identifier Site Type Within

AQMA

Data Capture 2012 (months)

Annual mean concentration 2010 (bias adjusment factor 0.84)

Annual mean concentration 2011 (bias adjusment factor 0.83)

Annual mean concentration 2011 (bias adjusment factor 1.28)

Annual mean concentration 2012 (bias adjusment factor 0.84)

Annual mean concentration 2012 (bias adjusment factor 1.05)

Site52 Brampton, Mold Road, Buckley CH7 2NH

Kerbside N 12 19.1 16.5 25.5 18.5 23.2

Site53 17, Mill Lane, Buckley CH7 3HA

Kerbside N 11 28.5 25.6 39.5 27.3 34.1

Site54 Ysgol Glanrafon,Mold Tri-Colocation

Urban Background N 12 12 8.1 12.4 8.9 11.1

Site55 Ysgol Glanrafon,Mold Tri-Colocation

Urban Background N 12 15.1 8 12.4 9.4 11.7

Site56 Ysgol Glanrafon,Mold Tri-Colocation

Urban Background N 12 11.8 7 10.7 11.7 14.6

Site57 Rose Cottage Junction A5119/A494

Kerbside N 12 48.1 45.5 70.2 40.7 50.8

Site 3 (new)

Aston Hill Roadside Roadside

N 4 38.6 48.3

In bold, exceedence of the NO2 annual mean AQS objective of 40µg/m3

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2.2.2 Particulate Matter (PM 10)

Monitoring of PM10 was carried out at Rose Cottage in 2012. The results indicate all

objectives for PM10 were met during 2012. The results indicate a slight decrease in

PM10 concentrations.

Results are presented in the tables below.

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Table 7 Results of Automatic Monitoring for PM 10: Comparison with Annual Mean Objective

Location Site Type

Within AQMA?

Valid Data

Capture 2012 %

Annual Mean Concentration µg/m 3 (% data capture for

the year)

2010 2011 2012

Rose Cottage Roadside N 96 22.6 21.5 19.1

In bold, exceedence of the PM10 annual mean AQS objective of 40µg/m3

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Table 8 Results of Automatic Monitoring for PM 10: Comparison with 24-hour Mean Objective

Location Site Type

Within AQMA?

Valid Data

Capture 2010 %

Valid Data

Capture 2011 %

Number of Exceedences of

24hr Mean (50µg/m 3)

2010 2011 2012

Rose Cottage Roadside N 95 81 7 0 7

In bold, exceedence of the PM10 daily mean AQS objective (50µg/m3 – not to be exceeded more than 35 times per year)

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2.2.3 Sulphur Dioxide (SO 2)

Past LAQM reporting has confirmed the Air Quality objectives for Sulphur Dioxide are

being met in all locations across the County. No monitoring for SO2 is currently

undertaken in the County.

2.2.4 Benzene

Past LAQM reporting has confirmed the Air Quality objectives for Benzene are being

met in all locations across the County. No monitoring for Benzene is currently

undertaken in the County.

2.2.5 Ozone

Monitoring data is available for ozone from the Mold AURN continuous monitoring

site. Ozone is not included in the LAQM regulations due to its transboundary nature

and thus the limited effectiveness of action of a local scale. There is however a

provisional objective level of 100µg/m3 as a running 8 hour mean that is not to be

exceeded more than 10 times per year. The Mold site recorded an exceedence of

100µg/m3 (8hr running mean) on 37 occasions in 2012. This is a slight improvement

from 2011 when 50 exceedences were recorded.

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2.2.6 Summary of Compliance with AQS Objectives

Monitoring carried out in 2010 and 2011 indicated that objectives for all pollutant

except for NO2 will be met in the County. NO2 exceedences were measured at

seven locations.

A summary of findings for each site is provided below.

Site Recommended Action

Site 3 No action required – site removed as not

at a location of relevant exposure

Site 3 (new) Continue to monitor at this location, add

additional monitoring in the locality.

Site 11 Continue to monitor, add a duplicate tube

at this location.

Site 12 Continue to monitor at this location

Site 24 Continue to monitor, add a duplicate tube

at this location.

Site 30 Continue to monitor at this location.

Site 57 Continue to monitor – Declare AQMA

Flintshire County Council has examined the results from monitoring in the County.

Concentrations within the proposed Rose Cottage AQMA still exceed the annual

mean for NO2.

When the locally derived bias correction factor is applied, NO2 concentrations outside

of the proposed AQMA have been recorded at relevant locations. However, as data

capture for the automatic station used for bias correction was below 90%, and use of

the national bias factor does not show exceedences, it is recommended that 2013

monitoring data is considered before deciding on the requirement for Detailed

Assessment.

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3 New Local Developments

3.1 Road Traffic Sources

Since the previous Review and Assessment report, there have been none of the

following new or newly identified developments:

� Narrow congested streets with residential properties close to the kerb;

� Busy streets where people may spend one hour or more close to traffic;

� Roads with a high flow of buses and/or HGVs;

� Junctions;

� New roads constructed or proposed;

� Roads with significantly changed traffic flows; or

� Bus or coach stations.

3.2 Other Transport Sources

Since the previous Review and Assessment report, there have been none of the

following new or newly identified developments:

� Airports;

� Locations where diesel or steam trains are regularly stationary for periods of

15 minutes or more, with potential for relevant exposure within 15m;

� Locations with a large number of movements of diesel locomotives, and

potential long-term relevant exposure within 30m; or

� Ports for shipping.

3.3 Industrial Sources

Since the previous Review and Assessment report, there has been one new

industrial development. Tata Steel works (planning application number, 050283)

located the on the eastern bank of the River Dee near Connah’s Quay have installed

a Combined Heat and Power plant. An air quality assessment has been carried out

to assess the impacts from the development. The assessment concluded that no

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significant impacts upon air quality would occur due to the installation. This site will

be regulated as a Part A process by the Environment Agency.

3.4 Commercial and Domestic Sources

Since the previous Review and Assessment report, there have been none of the

following new or newly identified developments:

� Biomass combustion plant – individual installations;

� Areas where the combined impact of several biomass combustion sources

may be relevant; or

� Areas where domestic solid fuel burning may be relevant.

3.5 New Developments with Fugitive or Uncontrolled Sources

Since the previous Review and Assessment report, there have been none of the

following new developments:

� Landfill sites;

� Quarries;

� Unmade haulage roads on industrial sites;

� Waste transfer stations etc; or

� Other potential sources of fugitive particulate emissions.

Flintshire County Council has identified the following new or previously unidentified

local developments which may impact on air quality in the Local Authority area.

Tata Steel Works, Connah’s Quay

This will be taken into consideration in the next Updating and Screening Assessment

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4 Local / Regional Air Quality Strategy Flintshire County Council are currently in the process of reviewing and updating the

Local Air Quality Strategy.

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5 Planning Applications There are no new planning applications which will have an impact upon air quality.

The council will continue to monitor all developments which have the potential to

impact air quality and review each as necessary.

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6 Air Quality Planning Policies Flintshire County Council are currently in the process of reviewing and updating the

Air Quality Planning Policies.

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7 Local Transport Plans and Strategies Flintshire County Council works in partnership with Taith which is a collaboration with

the six other North Wales local authorities in Wales – Anglesey, Conwy,

Denbighshire, Flintshire, Gwynedd and Wrexham.

The Regional Transport Plan (RTP) is a strategy for delivering improvements to the

transport system in North Wales over the next 5 years and is being developed by

Taith. Taith and the three other Welsh partnerships have been tasked by the Welsh

Assembly Government with producing four Regional Transport Plans within Wales.

The RTP Priorities include:

� Efficiently meeting North Wales diverse transport needs;

� Passenger transport profile and performance;

� Reducing congestion and journey times;

� Supporting development;

� Safe, efficient, sustainable transport networks;

� Improving rail services for North Wales;

� Environmentally Friendly and efficient freight movement;

� Smart traffic planning and management; and

� Sustainable transport.

The RTP objectives are to:

� Provide, promote and improve sustainable forms of transport and

infrastructure to minimise the negative impacts of transport on the local and

global environment;

� Improve safety of all forms of transport;

� Enhance the efficiency and use of the transport network; and

� Upgrade and maintain the transport infrastructure, providing significant new

infrastructure where necessary.

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8 Climate Change Strategies Flintshire County Council does not have a specific climate change strategy, however

climate change and carbon reduction is included in the Community Strategy 2009-

2019.

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9 Implementation of Action Plans The council do not currently have an Action Plan. They have however already begun

to look into quantitative modelling of potential measures to mitigate air quality

impacts upon Rose Cottage. The council will prepare an Action Plan once the plans

for the Rose Cottage AQMA are finalised.

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10 Conclusions and Proposed Actions

10.1 Conclusions from New Monitoring Data

Monitoring carried out in 2012 indicated 5 potential new air quality hotspots in the

County. Due to uncertainty around bias correction factors, it is recommended that

2013 monitoring data is considered prior to making decisions on the requirement for

Detailed Assessment. The site at Rose Cottage previously assessed via Detailed

Assessment continued to exceed the objectives for NO2 annual mean in 2012. There

was also an exceedence of the hourly objective for NO2 at the Rose Cottage site.

10.2 Conclusions relating to New Local Developments

One new development was identified in 2012. The Tata Steel works site added a

new combined heat and power installation. The air quality assessment for the

installation concluded no significant adverse impacts would occur.

10.3 Other Conclusions

The council will continue to finalise the decision regarding a new AQMA at Rose

Cottage following the findings of the 2012 Detailed Assessment.

10.4 Proposed Actions

The recommendation for each of the sites where an exceedence was noted is listed

below.

Site Recommended Action

Site 3 No action required – site removed as not

at a location of relevant exposure

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Site 3 (new) Continue to monitor at this location, add

additional monitoring in the locality.

Site 11 Continue to monitor, add a duplicate tube

at this location.

Site 12 Continue to monitor

Site 24 Continue to monitor, add a duplicate tube

at this location.

Site 30 Continue to monitor at this location.

Site 57 Continue to monitor – Declare AQMA

Following implementation of the above actions the council should proceed to Annual

Progress Report 2014.

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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

� Air Quality Updating and Screening Assessment (2006), Flintshire County

Council,

� Air Quality Updating and Screening Assessment (2009), Flintshire County

Council,

� Air Quality Review and Assessment Annual Progress Report (2010), Flintshire

County Council

� Air Quality Detailed Assessment (2010), Flintshire County Council,

� Updating and Screening Assessment (2012), Flintshire County Council

� Rose Cottage Detailed Assessment (2012), Flintshire County Council

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Appendices

Appendix A: Quality Assurance / Quality Control (QA/QC) Data

Appendix B: Diffusion tube monitoring results

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Appendix A: QA:QC Data

Diffusion Tube Bias Adjustment Factors

Factor from Local Co-location Studies A co-location study was set up at the AURN station in Mold in January 2010. The

data capture at the AURN site has limited the reliability of the study in past years.

The data in 2012 was again below 90% but was enough to give a good overall

precision. A factor of 1.05 was produced from the study.

Per

iod Start Date

dd/mm/yyyyEnd Date

dd/mm/yyyyTube 1 µgm -3

Tube 2 µgm -3

Tube 3 µgm - 3

Triplicate Mean

Standard Deviation

Coefficient of Variation

(CV)

95% CI of mean

Period Mean

Data Capture (% DC)

Tubes Precision

Check

Automatic Monitor

Data 1 02/01/2013 30/01/2013 16.4 16.9 16.4 17 0.3 2 0.7 13.4 99.7 Good Good2 30/01/2013 27/02/2013 14.0 13.4 13.9 14 0.3 2 0.8 20.8 96.1 Good Good3 27/02/2013 27/03/2013 13.1 12.4 12.4 13 0.4 3 1.0 14.1 99.4 Good Good4 27/03/2013 24/04/2013 9.2 9.2 9.4 9 0.1 1 0.3 12.1 99.7 Good Good5 24/04/2013 29/05/2013 11.5 10.6 11 0.6 6 5.7 12.7 99.9 Good Good6 29/05/2013 26/06/2013 8.5 9.9 9 1.0 11 8.9 8.1 99.9 Good Good7 26/06/2013 31/07/2013 6.1 5.8 4.8 6 0.7 12 1.7 4.8 99.6 Good Good8 31/07/2013 28/08/2013 6.7 7.1 7.0 7 0.2 3 0.5 5.7 99.9 Good Good9 28/08/2013 25/09/2013 7.7 6.4 6.9 7 0.7 9 1.6 5.1 99.6 Good Good10 25/09/2013 30/10/2013 13.4 13.9 13.7 14 0.3 2 0.6 6.1 38.5 Good Poor Data Capture11 30/10/2013 27/11/2013 9.6 11.0 10.1 10 0.7 7 1.8 0 0 Good Poor Data Capture12 27/11/2013 01/01/2014 18.2 16.4 15.8 17 1.2 7 3.1 0 0 Good Poor Data Capture13

Overall survey --> Good precisionPoor Overall

DC

Precision

Accuracy (with 95% confidence interval) Accuracy (with 95% confidence interval) without periods with CV larger than 20% WITH ALL D ATA Without CV>20%With all dataBias calculated using 9 periods of data Bias calculated using 9 periods of data 4% 4%

Bias factor A Bias factor A 18.7% 18.7%Bias B Bias B

Diffusion Tubes Mean: 10 µgm -3 Diffusion Tubes Mean: 10 µgm -3

Mean CV (Precision ): 6 Mean CV (Precision ): 6

Automatic Mean: 11 µgm -3 Automatic Mean: 11 µgm -3

Data Capture for periods used: 99% Data Capture for periods used: 99%

Adjusted Tubes Mean: µgm -3 Adjusted Tubes Mean: µgm -3Jaume Targa, for AEA

Version 04 - February 2011

1.05 (0.88 - 1.31)-5% (-24% - 14%)

11 (9 - 13)

-5% (-24% - 14%)1.05 (0.88 - 1.31)

11 (9 - 13)

Checking Precision and Accuracy of Triplicate Tubes

Diffusion Tubes Measurements Data Quality Check

It is necessary to have results for at least two tu bes in order to calculate the precision of the meas urements

Automatic Method

(Check average CV & DC from Accuracy calculations)

12 out of 12 periods have a CV smaller than 20%Site Name/ ID:

-50%

-25%

0%

25%

50%

Without CV>20% With all data

Diff

usio

n T

ube

Bia

s B

Factor from National Studies The factor taken from the national bias adjustment spreadsheet (v03_13) for the lab

and method applied was 0.84 based upon 5 studies.

Discussion of Choice of Factor to Use The 2011 Annual Progress Report considered both the local and the national bias

adjustment factors in the report as the national factor had historically been used in

Flintshire as there was no co-location study available. In 2011 a co-location study

was available at the AURN Mold continuous monitor, however due to less than 90%

data capture from the site the data was not deemed reliable. Additionally the

variation between the national and the local factor was significant. In 2012 the data

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LAQM Progress Report 2013 60

capture from the AURN site was again below the recommended 90%. There is still

significant variation between the national and the local and as such both sets of

results have been presented. The local results have been considered when

comparing against the national air quality objectives as this is a conservative

approach. Additionally the co-location will remain in place in 2013 and as long as the

data capture is good this factor can be used for the following years report.

PM Monitoring Adjustment

No PM monitoring adjustment was required.

Short-term to Long-term Data adjustment Data capture at all sites which recorded less than 75% data capture during 2012 has

been annualised according to the method set out in LAQM TG(09) box 3.2. The

details of the annualisation have been provided in the table below.

Table A.1 Short-Term to Long-Term Monitoring Data A djustment

Site

Uncorrected

Diffusion Tube Mean

(µg/m 3)

Annualisation factor

Aston Hill

Annualisation factor Liverpool

Speke

Annualisation factor

Mold

Average Annualis

ation factor

Annualised Data Average (µg/m 3)

Annualised Bias Adjusted Concentratio

n (µg/m 3)

3 76.5 1.03 1.00 0.94 0.99 75.9 79.7 31 20.1 1.01 0.99 0.91 0.97 19.5 20.5 47 23.3 0.98 0.97 0.92 0.96 22.3 23.4 3a 43.9 1.05 1.05 46.0 48.3

QA/QC of Automatic Monitoring

The Mold site is managed to the UK Automatic Urban and Rural Network (AURN) QA

procedures and standards as the site.

The Rose Cottage site is managed by Air Monitors. The site is managed to the

AURN standards.

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QA/QC of Diffusion Tube Monitoring

ESG participates in the Workplace Analysis Scheme for Proficiency (WASP), which is

an independent analytical performance testing scheme.

According to the summary of laboratory precision published by the LAQM Helpdesk,

tubes analysed by ESG displayed ‘Good’ precision in 4 out of 4 studies in 2012

(based on spreadsheet version 07/13).

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Appendix B: Monthly monitoring data

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

1 36.4 41.9 34.6 44.4 40.2 25.4 34.1 25.1 38.3 39.2

2 31.9 27.6 29.4 15.9 22.5 21.5 15.9 25.3 16.9 28.1 32.8 26.2

3 80.6 86.3 72.5 94.6 82.7 68.6 50.5

4 26.3 21.9 21.2 20 18.6 16.9 14.3 13.9 17.9 24.9 20.7 25.9

5 19 17.2 19.5 11.3 16.1 10.7 3 8 5.6 12.4 22.6

6 18 12.8 10.5 13.5 18.4 10.1 16 16.8 20

7 20.1 22.6 22.9 14.2 17.1 16.4 11.6 19.5 15 25.1 23.8 31.5

8 24.2 20.1 22.3 15.5 18 16.4 12.1 12.5 20.5 21.4 21.4 26.1

9 29.1 17.1 15.4 9.9 13.3 10.7 19.2 10.2 12.2 22 17.2 21.6

10 18.4 12.6 13.7 9.3 13.4 11 6.8 10.3 7.4 14.1 13.2 18.6

11 48.2 47.6 43.2 50.1 42.4 36.2 32.9 30.5 40.4 43.9 41.5 56.2

12 54.2 45.1 49.5 40.3 35.5 36.9 34.7 37.7 37.4 47.9 49.6 53.6

13 18.4 20.3 16.5 11.8 11.6 11.4 12.9 10.5 20.1 18.4 22.7

14 13 14 13.2 8.5 12.7 9.3 6.9 8.6 8.2 14.8 8.9 17.9

15 21.9 21 17.2 13.1 12.5 11.4 9.8 18.3 16.9 24.3

16 38.3 36.8 41.3 33.9 37.1 28.7 26.3 30.2 31.2 41.5 36.7 46.2

17 37.8 41 39.2 37 38.2 29.6 25.2 26.8 26.5 21.1 18.6 39.9

18 25 24.5 19.4 13.9 14.5 12.7 8.5 11.3 10.2 35.8 20.5 27.2

19 34.5 31.5 34.5 25 27.8 30.6 20.7 26.1 23.4 33.3 32.8 37

20 28.1 37.3 32.2 31.4 29.5 27.3 22.9 23.6 22.5 30 32.6 39.3

21 24.1 23 20.4 11.9 14.7 13 8.8 15 12.4 28.5 25.6 29.5

22 38.5 34.4 28.1 21.7 23.6 18.5 15.8 22 45.8 61.8

23 47.1 42 28 2.9 96.9 23.6 27 31.5 35.3 34.8 47.9

24 49.1 44 40.6 34.6 42.3 34.6 32.1 41.5 37.4 41.5 66.2 61

25 31.1 29.1 26.5 19.3 21.4 20.9 14.1 20.7 18.7 27.8 26 32.6

26 22.4 25 23.1 14.3 15.1 15.2 12.5 14.8 14.1 24.6 27.4 25.5

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

27 32.2 32.7 32.5 21.5 27.6 23.7 20 29.1 24.4 34.1 36.1 33.9

28 44.3 28.3 16.8 13.9 16.2 11.2 19.8 14.4 26 30 36.7

29 29.3 25.7 26.8 14.3 20.8 19.1 13.8 18.7 15.1 28.3 25.6 31.8

30 44.4 47.8 40.5 32.7 42.3 31.5 29.2 28.5 35.3 42.2 38.9 44.5

31 22.4 24.1 23.4 18.9 15.3 25.5 13.7 17.8

32 29.7 29 25.6 24.8 23.2 20.7 23.6 22.9 31 29.9 29.9

33 39.1 39.5 23.2 28.9 24.1 31 26.8 40.4 39.5 37.9

34 33.9 29.6 29.2 27.6 27.8 26.4 22.2 23.3 22.1 33.2 32.6 33.6

35 31.1 30.1 26.8 21.6 22.9 21.9 17.2 19.7 22.5 27.5 29.8 30.2

36 36.6 38 33.5 23.5 26 28.3 20.1 24.2 24.7 34.6 34.1 40.8

37 35 34 35.2 23.3 34.4 32.8 26.6 31.7 28.5 36.9 38 37.9

38 28.3 29.4 26.5 17.4 17.1 22.9 14.1 19.6 17.5 27.1 27.2 29.4

39 29.5 29.2 26.6 25.3 24.4 17.4 15.1 16.5 18.8 27.3 24.3 27.2

40 21.5 26.6 20.9 21.6 18.2 14.9 14 13 26.3 23.2 20.7 24.5

41 16 17.3 16 13.8 15.8 9.8 7.4 9.6 11.2 17.3 13.9 17.5

42 18 19.5 19.8 12.3 19.3 14.1 12.3 13.9 10.5 16.3 13.8 24

43 15.2 13.3 13.6 6.4 10.3 10.2 8.4 9.9 6 11.1 10.9 15.5

44 38.2 29.7 30.6 34.6 22.6 30.8 27.1 33.2 31.8

45 23.2 26.1 25.6 14.5 21.9 22.5 14.7 22.8 15.6 26.6 25.5 25.8

46 20.8 16.6 21.3 17.2 24.5 18.3 12.4 12.8 12.1 19.6 17 19.8

47 36.7 33.2 26.1 21.7 20.3 18.4 13.8 16.5

48 33.4 33.8 30.2 27.2 28.2 22.7 18.6 17.8 21.3 28.3 24.7 34

49 29.3 26.4 25 16.9 19.5 26.8 17.3 23.3 19.1 29.7 26.7 32

50 20.9 22.8 22.5 17.6 28.4 20.1 15.7 18.3 12.8 21.6 19.4

51 30.6 33 32.3 21.3 28.9 23.2 18.2 23.8 20.4 27.1 26.2 31.9 52 27.2 26.1 22.9 15.4 22.1 19.8 15.2 14.1 13.8 27.5 26.2 34.3 53 37.9 33.1 31.7 33.9 32.1 24.5 25.7 26.9 34.6 39.8 37.4

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

54 16.4 14 13.1 9.2 4.1 8.5 6.1 6.7 7.7 13.4 9.6 18.2

55 16.9 13.4 12.4 9.2 11.5 9.9 5.8 7.1 6.4 13.9 11 16.4

56 16.4 13.9 12.4 9.4 10.6 46 4.8 7 6.9 13.7 10.1 15.8

57 49.2 56.9 57.7 45.6 53.9 43.7 35.1 38 48.1 50.7 41.9 60

3a 38.7 39.2 51.3 46.5