Research and analysis

Air quality monitoring: compliance network status (2019 to 2023)

Published 9 October 2026

March 2025

The report was prepared by Ricardo AEA Ltd in 2025 for the Department for Environment, Food and Rural Affairs.

Glossary

Term	Definition
Fourth Daughter Directive, 4DD	EU Fourth Daughter Directive 2004/107/EC
AEI	Average Exposure Indicator
Affiliate site	A monitoring station which has been brought into Defra’s national network, typically owned by a local authority
AMCT	Annual mean concentration target, a concentration threshold set under the Environmental Targets (Fine Particulate Matter) (England) (2023) (Part 2), against which PM2.5 concentrations are compared (in England only)
AOT40	Accumulated amount of ozone over the threshold value of 40 ppb, a metric defined in the Air Quality Directive for the protection of vegetation
Air Quality Directive, AQD	EU Ambient Air Quality Directive 2008/50/EC
Air Quality Standards Regulations (2010, updated 2016)	Prior to 31 January 2020, the UK was a Member State of the European Union and was required to incorporate - or ‘transpose’ - the provisions of EU Directives into their own national law by a specified date. The Air Quality Standards Regulations are the legislation by which the UK fulfilled this requirement. These provisions remain relevant as the framework for the Monitoring Regime Assessment now that the UK is not a Member State
As	Arsenic
AURN	Automatic Urban and Rural Network
B[a]P	Benzo[a]pyrene
Cd	Cadmium
CEN	European Committee for Standardisation
CO	Carbon monoxide
Information and Alert Thresholds	Thresholds for public information defined in the Air Quality Directive
LAT	Lower Assessment Threshold, defined in the directives
LTO	Long term objective – defined in the Air Quality Directive
LV	Limit Value, defined in the directives
Micro and macroscale siting criteria	Criteria in the Air Quality Directive which are used to define the locations where monitoring is required and how monitoring stations should be sited
NAEI	National Atmospheric Emissions Inventory
Ni	Nickel
NO2	Nitrogen dioxide
NOX	Oxides of nitrogen
NS	near source
O3	Ozone
PAH	Polycyclic Aromatic Hydrocarbons
Pb	Lead
PCM	Pollution Climate Mapping
PERT	Population Exposure Reduction Target – a long-term concentration target set under the Environmental Targets (Fine Particulate Matter) (England) (2023) (Part 3), against which PM2.5 concentrations are compared (in England only)
PM	Particulate matter including PM10 and PM2.5 (particles of less than 10 and 2.5 micrometres in diameter, respectively)
RB	Rural Background, a monitoring station classification
SA	Supplementary assessment
SB	Suburban Background, a monitoring station classification
TGM	Total Gaseous Mercury
TV	Target Value, defined in the directives
UAT	Upper Assessment Threshold, defined in the directives
UB	Urban Background, a monitoring station classification
UI	Urban Industrial, a monitoring station classification
UK Air	Defra’s air quality website
UT	Urban Traffic, a monitoring station classification
UUNN	The UK Urban NO2 Network, developed to provide additional monitoring data for the national compliance assessment for NO2

Zones and agglomerations

Geographical areas which are defined for the purpose of air quality management and assessment, as required by the Air Quality Directive. Non-agglomeration zones are referred to as ‘zones’, agglomeration zones are referred to as ‘agglomerations’. Agglomerations use the term ‘UA’ (Urban Area)

Executive summary

This review assesses whether the UK’s air quality monitoring network meets the monitoring requirements of the Air Quality Standards Regulations (2010).

It covers the period 2019 to 2023 and applies criteria derived from the Ambient Air Quality Directive and the Fourth Daughter Directive to determine the number and type of monitoring stations needed across each UK reporting zone.

The previous assessment (2016 to 2020) recommended undertaking an assessment earlier than the next 5-year period to review network needs in the context of a larger post-Covid period.

Evidence from the UK Urban NO2 Network (UUNN), established in 2020, has also been considered. Although UUNN diffusion tube sites do not count towards the statutory requirement for fixed automatic monitoring, 4 years of data provide useful supporting evidence on local pollution levels and help classify air quality zones.

The assessment identified a need for 8 additional NOX and NO2 monitoring stations to meet target requirements:

• Greater Manchester Urban Area: 1 additional station, with flexible classification

• Tyneside Urban Area: 1 additional station, with flexible classification

• Liverpool Urban Area: 1 additional urban background station

• East Midlands zone: 1 additional station, with flexible classification

• West Midlands zone: 1 additional station, with flexible classification

• North East zone: 1 additional station, with flexible classification

• Central Scotland zone: 1 additional urban background station

• North Wales zone: 1 additional urban background station

No new monitoring requirements were identified for other pollutants, and these networks should broadly remain in their current configuration, except SO2. However, there may be scope for examining additional changes in the future as pollutant concentrations reduce further and populations change, for example, benzene.

Concentrations of SO2 are low, at levels at the limit of detection of the monitoring equipment. It is recommended that the network be reduced to a minimal network in line with the approach taken for CO previously, which was configured to meet wider environmental needs.

The review also considers the Environmental Targets (Fine Particulate Matter) (England) Regulations 2023, which introduced 2 PM2.5 targets for England. The associated siting requirements have been reviewed using the latest population data.

Finding new stations, securing planning permission and managing the logistics of network expansion is a resource intensive and complex process that requires expert input and can take a number of years. Station locations need to be researched to try to avoid future relocations due to planning and local changes due to developments.

As the network is developed, options for site affiliations, sharing of infrastructure, further consideration of the scientific value of individual measurements or the availability of supplementary assessment using models may alter the evolving network structure and will introduce minor inconsistencies with the tables presented in this document.

Table E 1: The 8 additional monitoring stations identified in the assessment as being necessary to meet NOX and NO2 target monitoring requirements

Zone	Action	Reason
Greater Manchester UA (UK0003)	One site to target (any classification)	Historical population increase resulting in band change
Tyneside UA (UK0005)	One site to target (any classification)	Historical population increase resulting in band change
Liverpool UA (UK0006)	One UB to target	Historical population increase resulting in band change, incorporation of UUNN dataset to establish Assessment Threshold classification under most recent methodology.
East Midlands (UK0032)	One site to target (any classification)	Population increase resulting in band change
West Midlands (UK0035)	One site to target (any classification)	Historical population increase resulting in band change
North East (UK0036)	One site to target (any classification)	Historical population increase resulting in band change
Central Scotland (UK0037)	One UB to target	Population increase resulting in band change
North Wales (UK0042)	One UB to target	Historical population increase resulting in band change

Table E 2: Summary of the current monitoring requirements of other pollutants (excluding NOX and NO2 pollutants)

Pollutant	Current monitoring status
PM	All zones at or above target monitoring
Benzene	All zones at or above target monitoring
Benzo[a]pyrene	All zones at or above target monitoring
Ozone	All zones at or above target monitoring
CO	All zones at or above target monitoring (objective estimation determines all zones are <LAT)

SO2	All zones at or above target monitoring

Metals (arsenic, cadmium, nickel, lead)

All zones at or above target monitoring

Introduction

An assessment regime review of the UK’s statutory air quality monitoring networks has been undertaken in accordance with the requirements of the UK’s Air Quality Standards Regulations (2010) (Air Quality Standards Regulations). The ruleset that governs the calculated monitoring requirement and configuration presented in the Air Quality Standards Regulations is based on requirements transposed from the Ambient Air Quality Directive (2008/50/EC) (AQD) and the Fourth Daughter Directive (2004/107/EC) (4DD) and criteria explicitly references from those 2 documents.

For clarity and consistency, this document refers to those specific articles and annexes in the Ambient Air Quality Directive and Fourth Daughter Directive where the criteria being used is stated in their entirety. This assessment presents the UK approach to the composition of the national monitoring networks using criteria detailed by European legislation as a guide to determine a target for monitoring by zone.

This review is based on measured and modelled data for 2019 to 2023. The previous review (Air quality monitoring regime assessment: compliance network status (2016 2020)) covered years 2016 to 2020 and recommended this review to be undertaken earlier than the established 5-year timeframe to better inform on post-Covid concentrations. The review helps identify actions that ensure that the monitoring remains compliant with the requirements of the legislation.

The UK is currently divided into 43 zones and agglomerations for the purpose of air quality assessment, which is undertaken using a combination of fixed measurements and modelling.

Figure 1 Map of zones for UK Air Quality Standards Regulations reporting

© Crown copyright. All rights reserved Defra, Licence number 100022861 [2026]

Table 1: Zones for AQD reporting (2023)

Zone	Zone code	Agglomeration (ag) or non-agglomeration (non-ag) zone	Population (2023) (number of people)	Area (km2)	Number of urban road links	Length of urban road links (km)
Greater London UA	UK0001	ag	9,764,565	1618	1874	1991
West Midlands UA	UK0002	ag	2,487,901	605	382	577
Greater Manchester UA	UK0003	ag	2,309,776	554	566	695
West Yorkshire UA	UK0004	ag	1,418,663	352	295	423
Tyneside	UK0005	ag	791,856	222	163	214
Liverpool UA	UK0006	ag	798,469	199	242	217
Sheffield UA	UK0007	ag	597,957	163	107	160
Nottingham UA	UK0008	ag	632,567	155	125	131
Bristol UA	UK0009	ag	603,605	139	112	130
Brighton/Worthing/Littlehampton	UK0010	ag	434,162	94	56	90
Leicester UA	UK0011	ag	483,981	101	60	83
Portsmouth UA	UK0012	ag	406,642	98	58	79
Teesside UA	UK0013	ag	327,247	120	52	60
The Potteries	UK0014	ag	298,165	91	122	141
Bournemouth UA	UK0015	ag	401,362	122	53	77
Reading/ Wokingham UA	UK0016	ag	337,799	82	68	76
Coventry/Bedworth	UK0017	ag	348,589	76	30	39
Kingston upon Hull	UK0018	ag	288,691	85	38	55
Southampton UA	UK0019	ag	321,346	79	59	78
Birkenhead UA	UK0020	ag	296,333	97	70	88
Southend UA	UK0021	ag	254,121	67	31	55
Blackpool UA	UK0022	ag	233,460	75	47	55
Preston UA	UK0023	ag	223,777	60	35	42
Glasgow UA	UK0024	ag	1,141,659	367	295	416
Edinburgh UA	UK0025	ag	506,499	134	71	119
Cardiff UA	UK0026	ag	356,989	86	42	69
Swansea UA	UK0027	ag	211,843	84	34	65
Belfast Metropolitan UA	UK0028	ag	570,779	217	51	232
Eastern	UK0029	non-ag	5,944,198	19,530	523	686
South West	UK0030	non-ag	4,831,336	24,564	388	517
South East	UK0031	non-ag	7,408,896	19,185	775	1010
East Midlands	UK0032	non-ag	3,879,859	15,472	380	495
North West and Merseyside	UK0033	non-ag	3,738,984	13,585	605	751
Yorkshire and Humberside	UK0034	non-ag	3,286,802	15,040	337	444
West Midlands	UK0035	non-ag	2,947,154	12,229	344	399
North East	UK0036	non-ag	1,592,015	8,441	152	175
Central Scotland	UK0037	non-ag	2,023,933	10,046	342	566
North East Scotland	UK0038	non-ag	1,149,044	19,066	185	290
Highland	UK0039	non-ag	395,004	44,091	59	105
Scottish Borders	UK0040	non-ag	262,266	11,437	59	60
South Wales	UK0041	non-ag	1,838,734	12,753	191	284
North Wales	UK0042	non-ag	755,998	8,766	67	120
Northern Ireland	UK0043	non-ag	1,349,629	14,558	101	247
Total	Not applicable	Not applicable	68,252,655	254,905	9,646	12,606

These zones and agglomerations have been classified against the assessment thresholds referenced in the Air Quality Standards Regulations and outlined in Section A of Annex II of the AQD and Section I of Annex II of the 4DD. Paragraph 2 of Article 5 of the AQD and Article 4 (6) of the 4DD require that this assessment is reviewed at least once every 5 years.

Data from the period 2019 to 2023 have been reviewed and a zone assessment threshold classification report (UK Air Quality Zones Assessment Threshold Status – 2019 to 2023) has been published summarising the classification outcomes. Zone classification is the first stage in a complex process to determine the target number of monitoring stations required under the Air Quality Standards Regulations to ensure that the network and reporting approach remains compliant. The classifications are then used in accordance with criteria in the Air Quality Standards Regulations to evaluate potential changes in the number of stations and their distribution over the network.

Evaluating the target number of stations also considers the UK approach to assessment using modelling (a supplementary assessment method that provides specific flexibility on sampling point calculations), making provision for a reduction in sampling point numbers provided other criteria are met. An additional consideration is therefore the number, type and location of stations needed for adequate model calibration and validation.

In addition to the 5-yearly classification reviews, the existing network is continually reviewed during the intervening period. This is delivered through the process of managing the sites under business-as-usual operations and ensures sites continue to meet the macroscale and microscale siting criteria for sampling points set out in Annex III of the AQD and Annex III of the 4DD.

The macroscale criteria set out overarching principles for placement of sampling points, including the following:

• the areas within zones and agglomerations where the highest concentrations occur to which the population is likely to be directly or indirectly exposed for a period which is significant in relation to the averaging period of the limit values (Annex III, B1a)

• levels in other areas within the zones and agglomerations which are representative of the exposure of the general population (Annex III, B1a)

The microscale criteria include additional details such as ensuring a free 270 degree arc of air around the inlet and ensuring stations are not placed within 25 metres of a major junction.

It is important to recognise the complexities of the management of a national monitoring network and the need to ensure that it provides value for money. The network has many purposes beyond statutory compliance assessment. It must also aim to meet the needs of researchers, a wider scientific community, policy makers, developers and requirements for public information. The network must be designed to maximise its value and stability should be ensured as far as possible, to ensure the best value for money over time.

The UK compliance network contains a large number of stations that are shared with local authorities to reduce costs to both parties and many local authorities also undertake monitoring separately for the purpose of Local Air Quality Management.

The majority of local authority monitoring stations are not part of Defra’s national monitoring network. Local authority monitoring is separate for several reasons. For example, the stations fulfil a different purpose by focusing on concentration hotspots and the stations may not meet the prescriptive quality and station location criteria set out in the Air Quality Standards Regulations.

From 2020, Defra established a new national monitoring network, UUNN. The purpose of this supplemental monitoring network is to provide more representative compliance information in areas where local authorities are working with Defra or the devolved governments to reduce NO2 concentrations in line with the UK plan for tackling roadside NO2 concentrations.

While this network is not governed by the same rules regarding number of sampling points and site classification as the NO2 monitoring in the AURN, it is used for compliance reporting in addition to the other measured and modelled evidence.  Defra supplements the national network with modelling to achieve an evidence base which is equivalent to monitoring in all required locations.

The report begins with a summary of the UK air quality compliance monitoring network. It then outlines the monitoring for each pollutant including the target number of stations. Tables 7-1 to 15-71 provide a detailed overview of the network and proposed changes.

Approach

This review has been undertaken to ensure that the monitoring network remains compliant with the requirements of the Air Quality Standards Regulations and continues to provide value to the wider scientific community (as noted in the report by the Air Quality Expert Group, Evidential Value of Defra Air Quality Compliance Monitoring).

The Air Quality Standards Regulations references the directives which set out how monitoring for the purpose of compliance assessment should be undertaken, including how many stations are required and detailed criteria on where to locate stations and the equipment that should be used. The number of stations required is calculated for each pollutant for each zone and is based on an assessment of concentrations over a 5-year period, together with population information for that zone.

The Air Quality Standards Regulations also allows use of supplementary assessment such as modelling, which allows flexibility in the number of stations required. The existing national monitoring network (the network in place prior to 2023) is the product of previous monitoring regime assessments and legacy monitoring networks dating as far back as the 1950s. The purpose of the approach is to ensure:

• that the monitoring network continues to provide a fit-for-purpose assessment under the Air Quality Standards Regulations

• monitoring is retained to support supplementary assessment techniques (air quality modelling and supplementary monitoring such as the UUNN)

• monitoring of specific scientific value is retained

• the network provides value for money

The approach adopted draws on information from both measurements and atmospheric dispersion models Defra’s Pollution Climate Mapping Models. Key inputs are the data from measurements and models used for annual compliance reporting under the AQD, 4DD and Air Quality Standards Regulations between 2019 and 2023.

These data sources have been used to evaluate pollutant levels within the UK air quality zones relative to Air Quality Standards Regulations assessment thresholds and long-term objectives (set out in Articles 5 and 9 of the AQD) and for each pollutant, in order to assign a classification in each zone within the report, UK Air Quality Zones Assessment Threshold Status – 2019 to 2023.

Information on the population and area of each zone and the UK as a whole has been used to calculate the number of monitors required in accordance with Article 6 and Article 10 of the AQD. Gridded population data for 2023 was used in the analysis, using 2023 ONS population estimates. Measurement data, network and station metadata has been compiled from the UK Air database for all relevant pollutants.

Supplementary assessment

In accordance with the Air Quality Standards Regulations (details set out in Articles 7 and 10 of the AQD and Article 4 (parts 2 and 11) of the 4DD), the UK utilises atmospheric dispersion model outputs (PCM model) as a source of supplementary assessment information.

This approach has several advantages. It provides a more comprehensive compliance assessment (covering each 1 by 1 km square of the UK and major urban roads) than fixed point monitoring alone.

Air quality modelling also provides useful policy-relevant outputs to facilitate scenario evaluation and future projections that are associated with the results of the compliance assessment. The application of modelling for the compliance assessment enables the UK to reduce the target number of monitoring stations as stipulated by the Air Quality Standards Regulations by up to 50% (as detailed in the AQD). This applies for all pollutants other than ozone, for which the flexibility in monitoring is governed by its own set of rules set out in Article 10 of the AQD.

Supporting information on the models used is presented in a separate technical report on UK supplementary modelling assessment under the Air Quality Standards Regulations 2010 for 2020. The models utilised are compliant with the data quality objectives for model data set out by Annex I of the AQD and Annex IV of the 4DD. The UK’s compliance reporting approach also makes use of evidence in the form of supplementary measured NO2 concentrations from the UUNN which is explained below.

Applying supplementary assessment techniques in order to reduce the dependence on fixed measurement means that due consideration must be given to the value of monitoring stations above the minimum required for compliance with the Air Quality Standards Regulations. For example, it is often prudent to retain more monitoring than the minimum required in a zone if that monitoring is valuable for model calibration or checking of the model outputs.

Reductions to target diffuse monitoring

The reduction to the number of monitoring stations required as a result of supplementary assessment (modelling) varies between pollutants. The approach adopted in this assessment is summarised below.

NOX, NO2, PM10, PM2.5, SO2, Pb and benzene

For NOX, NO2, PM10, PM2.5, SO2, Pb and benzene, the QD allows a reduction of up to 50% (Article 7, paragraph 3). The minimum monitoring requirements have been calculated on the basis of the maximum allowable reduction (the full 50%). This is rounded up (see rounding section above) to nearest integer (monitoring station) as a conservative approach

NOX and NO2

For consistency with previous MRAs, the approach adopted for the calculation of NOX and NO2 target monitoring does not apply a supplementary assessment reduction for either metric. This ensures that the monitoring network for national compliance assessment for NOX and NO2 is designed to meet the requirements of the Air Quality Standards Regulations using fixed monitoring alone.

The PCM modelling results available annually for NOX and NO2 are used to support the monitoring in the assessment but do not affect the number of target sites established for compliance reporting purposes.

Metals

The criteria governing lead was specified under the AQD 2008 (unlike arsenic, cadmium and nickel which were specified under 4DD) and therefore lead is subject to a 50% reduction in target monitoring.

Metals measurements for all species (Pb, As, Cd, Ni) are obtained on a single filter so any requirement to measure a single species also produces measurements for the other species at no additional cost.

The target monitoring numbers presented in this document account for this by presenting the maximum number of monitoring stations (‘worst case scenario’) for any metal. In practice, Pb concentrations in the UK are very low and all zones are below the LAT (as per UK Air Quality Zones Assessment Threshold Status to 2019-2023) which reduces the complexity of reconciling criteria for Pb with criteria for the other metals.

Ozone

For ozone, there is no specific, quantified reduction in monitoring when supplementary assessment is used. Instead, AQD Article 10, paragraph 3(c), sets the criteria for determining the minimum number of monitoring stations: one station per 2 million people or one station per 50,000 km² (whichever results in the higher number) and never fewer than one station per zone.

It is also important to note that using supplementary assessment removes the requirement to place monitors at particular location types, because the model provides information for all environments (for example, suburban, urban, and rural) for compliance reporting.

As, Cd, Ni and B[a]P

For As, Cd, Ni, B[a]P, the 4DD details an alternative approach to supplementary assessment than the AQD. Instead of calculating station numbers from a table and then applying a percentage reduction to that number, the 4DD simply prescribes a minimum monitoring target for zones above the LAT (for example, one station per zone if supplementary assessment is applied to inform on all other areas). This means that the target for zones above LAT is at least one monitoring station.

UK Urban NO2 Network (UUNN)

The UUNN has been operational since 2020. The purpose of this supplemental monitoring network is to provide more representative compliance information in areas where Local Authorities are working with Defra or the devolved administrations to reduce NO2 concentrations in line with the UK plan for tackling roadside NO2 concentrations.

This monitoring is intended to capture the impact of air quality control measures being implemented at local level that would otherwise be challenging to represent through the established national monitoring network and through the compliance modelling process (which uses National level emissions inventories).

The inclusion of this network in the compliance reporting does not affect the calculation or target numbers of sampling points listed above which are governed by rules established by the Air Quality Standards Regulations. This monitoring therefore represents supplementary measured evidence above the minimum required for compliance with the Air Quality Standards Regulations.

In 2023, the network comprised 304 triplicate tube locations including 38 co-located with AURN monitoring sites for validation purposes.

This assessment has included the 4 years of UUNN data available as part of the supplementary evidence to determine the Assessment Threshold Classification alongside the fixed automatic measurements and PCM modelling evidence.

Point sources

Point sources are emissions sources at fixed locations and are typically industrial in nature. Monitoring to assess contributions from point sources is referred to in Annex V, Section A, Part 2 of the AQD and in Annex III, Part IV (b) of 4DD. Existing stations in the UK network that have been classified as urban industrial are used to assess contributions from both diffuse sources and contributions from point sources.

Where industrial stations fall within the footprint of a point source they provide additional information on that point source. Regard needs to be given to the impact on diffuse monitoring requirements where an industrial monitoring station measuring a point source is considered for closure because of changes to the point source.

The requirements for monitoring at industrial stations have been reviewed in the following way:

• a review of existing industrial stations within the national compliance monitoring networks, including a review of whether the current classification as industrial remains valid and whether the station is in close proximity to point sources. This is relevant for all Air Quality Standards Regulations pollutants

• a review of information available from supplementary assessment modelling results in terms of the contribution to total concentrations from point sources at location above the LAT. This is relevant for all Air Quality Standards Regulations pollutants

• a review of information on the locations of Air Quality Management Areas declared by UK local authorities as related to industrial sources

Existing industrial stations

Stations have been classified as industrial for a pollutant if the sum of the industry, aircraft and shipping contributions within the source apportionment was greater than the sum of the remaining local contributions.

Account was also taken of local knowledge of stations and emission sources, (where the model under predicted measured concentration) to determine whether this under prediction was likely to represent the impact of a local industrial source.

The approach to station classification has been captured in the report, A review of air quality station type classifications for UK compliance monitoring, covering all monitoring in the network in 2013 and the same approach has been applied to monitoring stations introduced or moved since then.

An analysis of model results for 2023 has been carried out to check that the classification as industrial remains valid. The locations for the stations have also been compared with the modelled contributions to ambient concentrations from industrial point sources.

Previous assessments have sought to reclassify industrial monitoring stations where the industrial source they were established to represent has stopped emitting. No instances of a reclassification due to changing industrial emissions sources have been identified in this assessment. Such industrial monitoring stations may have existing merit to help represent diffuse sources in the zone (as described in the following section).

Where an industrial source has stopped emitting, it is recommended that monitoring continue for a minimum of 2 calendar years following closure of the source in order to verify the impact on ambient concentrations.

Point source modelling

A review of the 2023 compliance assessment modelling data has been completed to assess modelled total concentrations and the relative contribution of point sources across each 1 by 1 km2 in the UK.

Table 2 summarises the maximum modelled total concentration, the relevant Lower Assessment Threshold (LAT), Upper Assessment Threshold (UAT) and Limit Value (LV) for each Air Quality Standards Regulations pollutant modelled in µg m-3. The table also presents the area exceeding the LAT, and the area exceeding the LAT where the point source concentration is more than 25% of the total concentration and the maximum percentage contribution to total concentrations from point sources.

The threshold of 25% has been chosen following a review of the frequency distributions of the percentage point source contribution in order to identify those locations above the LAT for which the point source contribution merits review.

Table 3 shows a similar analysis for the Air Quality Standards Regulations pollutants modelled in ng m-3.

Table 2: Assessment of locations exceeding LAT as a result of point source contributions for 2023 (Air Quality Standards Regulations pollutants)

Pollutant	Max modelled total background concentration (µg m-3)	Max modelled point source concentration (µg m-3)	UAT (µg m-3)	LAT (µg m-3)	LV (µg m-3)	Area exceeding LAT (km2)	Area exceeding LAT where point source concentration > 25% of total (km2)	Max percentage contribution from point sources to LAT exceedance (%)
SO2 [Note 1]	35	26	75	50	125	0	0	0.0%
NOX (NO2) [Note 2]	59(34)	33	32	26	40	46	0	14.0%
PM10 [Note 3]	18	3	28	20	40	0	0	0.0%
Pb	0.05	0.05	0.35	0.25	0.5	0	0	n/a
Benzene	3.7	1.9	3.5	2	5	2	1	78.3%
CO [Note 4]	n/a	n/a	7	5	10	n/a	n/a	n/a
PM2.5	10	2	14	10	20	4	0	18.8%

Note 1: Assessment thresholds for the SO2 24 hour LV.

Note 2: Assessment thresholds for the NO2 annual mean LV. Total concentrations are presented for both NO2 and NOX: point source contributions are for NOX; areas exceeding are for NO2.

Note 3: Assessment thresholds for PM10 for the annual mean LV.

Note 4: CO is not assessed using a compliance model but by measurements where they exist and by objective estimation due to persistent evidence of concentrations significantly below the LAT. Therefore, no model results are available. Units are mg m-3.

Table 3: Assessment of locations exceeding LAT as a result of point source contributions for 2023 (4DD pollutants)

Pollutant	Max modelled total (background) concentration (ng m-3)	Max modelled point source concentration (ng m-3)	UAT (ng m-3)	LAT (ng m-3)	TV (ng m-3)	Area exceeding LAT (km2)	Area exceeding LAT where point source concentration > 25% of total (km2)	Max percentage contribution from point sources to LAT exceedance
B[a]P	8.0	0.10	0.6	0.4	1.0	41	0	4.1%
As	3.2	0.9	3.6	2.4	6.0	19	0	0.6%
Cd	2.6	2.5	2	3	5.0	0	0	0.0%
Ni [Note 5]	25	24	14	10	20	4	3	94.2%

Note 5: Coarse scale PCM modelling used for Ni contributions.

Benzene

There is one grid square where the modelled concentration exceeds the LAT and the contribution from point sources exceeds 25% for benzene. This is in the vicinity of the refineries at South Killingholme.

There are no monitoring stations for benzene in the vicinity of this location. A previous monitoring campaign in this area has confirmed that the modelled estimate for this location is a conservative one and so the existing supplementary assessment evidence provides an adequate assessment for these industrial sources without the need for additional monitoring evidence.

Ni

There are 3 grid squares where the modelled concentration exceeds the LAT and the contribution from point sources exceeds 25% for Ni. The grid squares are where the coarse scale modelled concentration is informed by a combination of the measured concentration at the Sheffield Tinsley Urban Background monitoring station and the local modelling of the steel production industrial sources.

The existing monitoring and supplementary assessment (fine scale modelling which is undertaken as a post-processing activity specific to individual sources) provides an adequate assessment for this industrial source without the need for additional monitoring evidence.

NO2, PM10, PM2.5, SO2 CO, B[a]P, Pb, As and Cd

There are no locations with exceedances of the LAT where the contribution from point sources exceeds 25% for NO2, PM10, PM2.5, SO2, CO, B[a]P, Pb, As and Cd.

A modelling assessment has not been carried out for CO – the assessment is based on a combination of monitoring data and objective estimation, for this pollutant for which the main sources contributing to ambient concentrations are likely to be road transport and domestic emissions.

Industrial AQMAs

The database of UK Air Quality Management Areas as of January 2025 was examined to identify all active AQMAs for which industrial sources are listed. This identified the following:

• 8 AQMAs for which industry is the only source identified

• 16 AQMAs for which the source identified is road transport and industry

• 5 AQMAs for which the source identified is domestic, road transport and industry

The declared industrial AQMAs cover a wide range of sources, both industrial and non-industrial. It is unlikely that additional, industrial AQMA-specific monitoring will provide significant insight into the industrial sources beyond that provided by existing monitoring and the PCM point sources model. Therefore, no additional monitoring is recommended.

Point source summary

Supplementary assessment techniques (modelling) are sufficiently robust to adequately assess contributions from industrial sources.

Specific industrial stations are only recommended where already established or concentrations are high. Existing industrial stations will be retained for model calibration and verification and scientific purposes and to preserve long data records (where there are no extenuating circumstances forcing station closure for other reasons and if the classification as industrial remains valid).

Diffuse sources

Diffuse sources are emissions sources that cannot be represented by a defined set of location-specific release parameters, either because they are not known, or they are too numerous to be characterised effectively in this way. Examples are road traffic, domestic heating and small industry.

The monitoring requirements for diffuse sources (for Air Quality Standards Regulations pollutants other than ozone, for which there is a specific set of rules, discussed below) are determined in the AQD using the table in Annex V, Section A and are based on the assessment threshold classification (lower than the LAT, between the LAT and the UAT, or above the UAT) for each zone and its population (as set out in the report, UK Air Quality Zones Assessment Threshold Status (2016 to 2020)). This target number may then be modified by the application of supplementary assessment (as discussed above).

Further criteria in Annex V seek to ensure that a balance of urban background (UB) to urban traffic (UT) monitoring is achieved and that zones where concentrations have exceeded the UAT contain at least one UB and UT station, provided this does not increase station numbers. As per Annex V.1, Diffuse Sources, footnote (2):

For nitrogen dioxide, particulate matter, benzene and carbon monoxide: to include at least one urban background monitoring station and one traffic-orientated station provided this does not increase the number of sampling points.   For these pollutants, the total number of urban-background stations and the total number of traffic oriented stations in a Member State required under Section A(1) shall not differ by more than a factor of 2. Sampling points with exceedances of the limit value for PM10 within the last three years shall be maintained, unless a relocation is necessary owing to special circumstances, in particular spatial development.

This passage uses a complex set of terms to describe site classifications when placed in the broader context of the AQD. It explicitly states Urban Background but uses the terminology ‘traffic-orientated’ which could include Rural Traffic (RT), Suburban Traffic (ST) classifications.

Given the explicit reference to ‘urban background’, our adopted approach has been to interpret ‘traffic-orientated’ to mean ‘urban traffic’ which is consistent with the aims of the Air Quality Standards Regulations to promote monitoring where the highest concentrations occur to which the population is likely to be directly or indirectly exposed (according to AQD Annex II. B.1.a). Traffic-orientated sites that are not UT undermine this aim. The calculations for this criterion have therefore used UB and UT classifications explicitly.

The number of monitoring stations required for ozone is governed by a different set of requirements provided by Article 10 of the AQD that describe how supplementary assessment techniques can be applied and the number of monitors should be determined. Article 10 (paragraph 3.c.) prescribes a minimum number of stations for each zone based on a combination of population or area (with at least one monitoring station within each zone) as long as other criteria in the Article 10 are also met.

Additional criteria on the breakdown of station classifications (Urban, Suburban, Rural) for ozone given in Annex IX are not relevant because the UK uses modelled supplementary assessment. These classification criteria are only applicable if fixed monitoring is the only source of data. The application of air quality modelling ensures that the compliance assessment represents all area types irrespective of specific monitoring locations. The required monitoring can therefore be located freely within each zone.

Chapter 3 of the Air Quality Standards Regulations (Article 11) requires the UK to measure arsenic (As), cadmium (Cd), nickel (Ni) and polycyclic aromatic hydrocarbons (using Benzo(a)Pyrene as a marker) in zones where concentrations are classified as above the LAT and states that measurements may be supplemented by modelling techniques to provide an adequate level of information on air quality. The supplementary assessment used by the UK includes modelling concentrations at background locations.

Emissions data from the UK’s National Atmospheric Emissions Inventory (NAEI) demonstrates that emissions of metals and B[a]P from traffic sources are not deemed to be significant in the UK (2020 modelling technical report), so modelling at traffic locations is not undertaken as part of the UK compliance approach. As a result of supplementary assessment methods for these pollutants, the minimum number of sampling points has been determined as one per zone.  This approach ensures that all zones above the LAT have at least one fixed measurement station where supplementary assessment is applied.

A characteristic of the metals monitoring process (sampling on a filter from which all metals species are analysed) is that the requirement to measure a single species as defined by the assessment thresholds will provide data for the other species as a by-product irrespective of the assessment threshold status of these other species. As a result, the recommendation for measurements of one metal results in a recommendation to measure all.

Consideration of different pollutant metrics

A key feature of the UK regime assessment approach (specifically in classifying each zone according to the assessment thresholds as required by the Air Quality Standards Regulations) has been to ensure that pollutant levels are not underestimated or over estimated.

In doing so, where pollutants have more than one averaging period specified for assessment thresholds, a conservative approach has been taken whereby the most stringent metric - the metric which is hardest to comply with, and that leads to the requirement for the greatest number of stations in a zone - has been used in the calculation.

Table 4 summarises the metrics used for the calculation of monitoring requirements for each pollutant. The Pollution Climate Mapping (PCM) compliance model for NO2 provides an annual mean output only and cannot provide a robust estimation of such a highly variable and uncertain metric as 1-hr across the UK. As a result, the assessment threshold classified under this assessment for NO2 1-hr metric has been based on measurement data only and the annual mean NO2 metric classification has been based on a combination of measurements and model results.

For PM10, the most stringent metric of either the annual mean or the 24-hr mean metric has been used on a zone-by-zone basis to calculate the monitoring requirements to ensure a conservative approach to calculating station numbers. Similarly, for ozone, the most stringent metric has been used on a zone-by-zone basis to determine requirements.

Table 4: Averaging periods used in the UK Air Quality Standards Regulations regime assessment

Pollutant	Averaging period used in this assessment
NO2 for health protection	Annual mean/1-hr mean [Note 6]
NOX for vegetation & ecosystem protection	Annual mean
PM	Annual mean/24-hr mean [Note 6]
CO	8-hr mean
SO2 for health protection	24-hr mean
SO2 for vegetation protection	Winter mean
Benzene	Annual mean
Ozone	Maximum daily 8-hr mean/AOT40 [Note 6]
Lead	Annual mean
Arsenic	Annual mean
Cadmium	Annual mean
Nickel	Annual mean
Benzo[a]pyrene	Annual mean

Note 6: The most stringent metric is chosen on a zone-by-zone basis.

Data capture

A data capture threshold of 85% has been used to determine monitoring data incorporated into this assessment. A data capture threshold of 85% has been used since 2012, in line with guidance under European Implementing Provisions Rules. This meets the 90% DQO requirement amended by minus 5% to account for scheduled maintenance and has been maintained for consistency and accepted best practice.

PM10 stations to retain

Annex V part A of the AQD requires any monitoring station that has reported PM10 exceedance in any of the preceding three years (2021 to 2023) to be retained. In previous assessments the exceedance was counted for the annual mean LV if the data capture criteria (specified above) had been met.

No data capture criteria was applied to identify exceedances of the 24-hr LV. The exceedances had been calculated without the application of any natural correction (for example, sea salt quantification) and therefore represented a conservative approach. This assessment has not identified any exceedances and as such there are no stations that require retention.

PM2.5 Average Exposure Indicator (AEI)

The number of stations to be used for the PM2.5 national exposure reduction target have been calculated in accordance with AQD Annex V paragraph 2B, requiring one sampling point per million inhabitants of agglomerations and other urban areas in excess of 100,000 inhabitants across the remainder of the UK.

The approach defines an overall AEI monitoring target which may subsequently include any relevant urban background or suburban location within urban areas with equal to or less than 100,000 population and is consistent with AQD Annex V guidance.

The required number of stations was determined for the baseline AEI (using measurements from 2009 to 2011) and are to remain unchanged (as far as possible) until the final assessment in 2018 to 2020. The requirement is therefore unchanged since the previous assessment (although the stations list may have changed slightly).

A total of 33 AEI monitoring stations are needed for the UK and in 2023 there were 43 urban background PM2.5 monitoring stations suitable for use. In order to undertake a valid calculation of the AEI it is advisable to maintain more than the minimum stations required. This is because obtaining the required data capture is challenging using the real time monitoring instrumentation. In addition, station closures are sometimes forced through planning decisions. Therefore, the actual AEI calculations in 2010, 2015 and 2020 are not likely to contain data from exactly the same stations. A definitive list of urban background PM2.5 monitoring stations that have been classified for use in the AEI calculations is provided in Annex 1.

A significant number of new PM2.5 monitoring stations have been established in recent years to satisfy new legislation (see below). One of the central requirements for an AEI approach is a stable network with which to compare the concentrations at the outset and at the end of the decade. For this reason, these new monitoring stations are not included in the AEI sites used for AEI calculations.

PM2.5 targets (England)

The Environmental Targets (Fine Particulate Matter) (England) Regulations (2023) sets 2 targets for PM2.5 in England to be achieved by 2040: the Annual Mean Concentration Target (AMCT, Part 2 of the Regulations) and the Population Exposure Reduction Target (PERT, Part 3 of the Regulations).

These metrics are assessed through measurements only and the monitoring requirements are set out in schedule 2 section 3. These requirements are based on population only. The monitoring network expansion to meet this requirement commenced in 2022 and is ongoing.  A review of existing sites and where planned sites are proposed using the most recently available population data (2023) is included in Table 15.

The number of monitors required to meet the regulations by the deadline of end of December 2027, will be based on assessment against populations in 2022. This is to recognise that it often takes a number of years to establish a new monitoring site and therefore it’s important that the target number is fixed at a suitable point to make the expansion deliverable.

Application of rounding

Several sets of calculations to derive target numbers of monitoring stations in this assessment have required rounding to integers. A conservative approach has been adopted whereby the reduction by half of required monitoring according to Annex V is rounded up to the nearest whole number of monitoring stations. For example, a requirement to measure at 7 stations is amended to 4 stations with the application of supplementary assessment. This assessment uses conventional commercial rounding rules.

The determination of target numbers of monitoring stations for PM2.5 speciation, PAH deposition and Total Gaseous Mercury (TGM) deposition and of NOX and SO2 stations for vegetation and ecosystem assessment has been calculated using the total area of the UK and rounding down.

Monitoring for Ecosystems, VOCs, and PM2.5 speciation and deposition

Ecosystem and vegetation zones

Monitoring for the protection of ecosystems and vegetation (relevant to NOX and SO2 only) is limited to defined ecosystem areas, the criteria for which are set out in the AQD (Annex III, para. B. 2). These criteria exclude areas within 5 km of built-up areas, industrial installations, motorways or other major roads with traffic counts of more than 50,000 vehicles per day. Measured and modelled data for SO2 and NOX were used to determine the assessment threshold classification.

To calculate the monitoring needed for protection of ecosystems and vegetation, the maximum observed NOX and SO2 model observations were used in conjunction with the area of the UK designated as an ecosystem and vegetation area to establish the monitoring needed for the UK as a whole. Annex V Section C of the AQD provides guidance on this.

Historically, the UK has used measurements from all rural and remote monitoring stations measuring NOX and SO2 for assessments relative to the ecosystem and vegetation thresholds, rather than the more limited subset of these stations specifically located in ecosystem and vegetation areas. As a result, the UK’s assessment approach is conservative; providing more monitoring than the calculated target number of stations and being more representative of locations closer to emission sources with higher observed concentrations.

Volatile organic compounds (VOCs)

A suite of recommended volatile organic compounds (VOCs) is listed in Annex X of the AQD and are to be measured by at least one station in the territory according to Article 10 paragraph 6, in order to assess concentrations of ozone precursor substances. The station that fulfils this role within the UK network during this time period is London Eltham.

PM2.5 monitoring for speciation

One rural background measurement for PM2.5 speciation is needed per 100,000 km2 in the UK. The current network includes 2 stations for this function (Auchencorth Moss in Central Scotland zone and Chilbolton Observatory in South East zone). The AQD states that PM2.5 monitoring stations nominated to fulfil this role are additional to those required to satisfy Article 6 paragraphs 2, 3 and 4. There are currently MARGA (ion-chromatograph) instruments at these stations specifically for the purpose of obtaining speciated PM2.5 data for compliance with the AQD.

Deposition of As, Cd, Ni and PAHs

Article 9 of the 4DD requires at least one station per 100,000 km2 to measure total deposition of arsenic, cadmium, nickel and mercury and of B[a]P and other PAHs. 2 stations have been established in the UK for this purpose (Auchencorth Moss in Central Scotland zone and Chilbolton Observatory in South East zone). Additional monitoring of metals deposition at stations other than these is not required for compliance assessment.

Since the previous assessment, the rural metals network and urban metals network has been consolidated into a single metals network. The metals network provides deposition data at sites other than those listed above in order to perform UK-wide deposition mapping but this is not required under the 4DD.

Mercury monitoring

Article 9 of the 4DD requires at least one station per 100,000 km2 to measure total gaseous mercury (TGM). Two stations have been established in the UK for this purpose (Auchencorth Moss in Central Scotland zone and Chilbolton Observatory in South East zone). Measurements at these 2 stations utilise automated measurement systems that provide hourly values. Additional data of this sort is useful in establishing sources of mercury in the UK.

Monitoring station changes

Any new recommendations identified under this assessment result from changes to the two key calculation inputs – the pollution climate (as represented by the assessment threshold status for each zone) or population changes. Changes to these inputs are summarised in the sections below.

Review of approach to station classification

Station classifications have been reviewed periodically (as required by the 2011 Commission Decision on the reciprocal exchange of information and reporting on ambient air quality (2011/850/EU). Classifications have been determined on a pollutant specific basis for all pollutants based on the predominant emissions source. An overall classification has been determined based on source apportionment information from the PCM model. Where a station was industrial for any pollutant, the classification was industrial overall. All traffic stations must be within ten metres of the kerb.

For metals in PM10, a single classification has been made based on the contribution of any of the regulated metals in PM10 in the AQD or 4DD. Further information is available in the report, A review of air quality station type classifications for UK compliance monitoring, summarising the approach and resulting classifications.

All station classifications for monitoring stations commissioned and operational as a result of the previous assessment recommendations have been determined according to the same rules, resulting in consistent classifications across the national network.

Population changes and zone geometries

The previous assessment was made using data from 2016 to 2020 and the population data available used mid-year estimates for 2019, derived from data provided by the Office for National Statistics for England and Wales, National Records of Scotland and Northern Ireland Statistics and Research Agency. This 2019 to 2023 assessment uses mid-year estimates for 2023, derived from data provided by the Office for National Statistics for England and Wales, National Records of Scotland and Northern Ireland Statistics and Research Agency.

The 2023 population data uses data from the 2021 census (2022 census in Scotland) The change in population by zone is relevant for these calculations because they affect the band in the table of Annex V (ADQ) and Annex III (4DD) that prescribes the number of monitoring stations required for diffuse sources. Population data are not a direct input to the modelled or measured data used to determine the assessment threshold status.

Table 5 shows the change in population by zone between the sets of population data and summarises any changes to the band used in the calculations within the directives.

Table 5: Population changes: 2019 mid-year estimates and 2023 mid-year estimates (zones for which station calculations are affected). Results in change according to bandings prescribed in AQD Annex V and 4DD Annex III or criteria for ozone prescribed in AQD Article 10 section.

Zone	Population (2019) (number of people)	Population (2023) (number of people)	Results in change to station numbers
South West	4,673,818	4,831,336	Yes, excluding ozone
East Midlands	3,740,367	3,879,859	Yes, excluding ozone
Central Scotland	1,995,307	2,023,933	Yes, including ozone

No major changes have been made to the zone boundaries since the previous assessment. Any alterations that have occurred since the 2020 compliance assessment are to correct small anomalies in the way that the zone boundaries intersect with the spatial dataset used for the locations of major road links typically along coastal areas.

Assessment threshold classification changes

In order to summarise the drivers behind changes in the calculations from the previous assessment and this assessment, a review of changes to the assessment threshold status classifications for each zone of has been undertaken.

Table 6 summarises those pollutants and zones for which this classification has changed since the last assessment and therefore which may have resulted in a calculated change in monitoring configuration.

Table 6: Changes in assessment threshold status: 2016 to 2020 and 2019 to 2023

Pollutant	Zone	Former classification (2016-2020)	Revised classification (2019 -2023)
NO2	UK0010	>UAT	LAT-UAT
NO2	UK0015	>UAT	LAT-UAT
NO2	UK0016	>UAT	LAT-UAT
NO2	UK0020	>UAT	LAT-UAT
NO2	UK0021	>UAT	LAT-UAT
NO2	UK0022	LAT-UAT	<LAT
NO2	UK0023	>UAT	LAT-UAT
NO2	UK0026	>UAT	LAT-UAT
NO2	UK0027	>UAT	LAT-UAT
NO2	UK0030	>UAT	LAT-UAT
NO2	UK0039	LAT-UAT	<LAT
NO2	UK0040	LAT-UAT	<LAT
NO2	UK0043	>UAT	<LAT
PM	UK0002	>UAT	LAT-UAT
PM	UK0019	>UAT	LAT-UAT
PM	UK0022	LAT-UAT	<LAT
PM	UK0029	>UAT	LAT-UAT
PM	UK0032	>UAT	LAT-UAT
PM	UK0035	>UAT	LAT-UAT
PM	UK0038	LAT-UAT	<LAT
As	UK0030	LAT-UAT	<LAT
As	UK0031	LAT-UAT	<LAT
As	UK0032	>UAT	LAT-UAT
As	UK0033	LAT-UAT	<LAT
As	UK0034	>UAT	LAT-UAT
As	UK0035	LAT-UAT	<LAT
As	UK0040	LAT-UAT	<LAT
Cd	UK0002	LAT-UAT	<LAT
Ni	UK0029	LAT-UAT	<LAT
B[a]P	UK0004	LAT-UAT	<LAT
B[a]P	UK0012	>UAT	<LAT
B[a]P	UK0028	>UAT	LAT-UAT
B[a]P	UK0031	LAT-UAT	<LAT
B[a]P	UK0033	LAT-UAT	<LAT

Monitoring station targets

Calculated target number of monitoring stations and existing monitoring

Summary tables based on the diffuse requirement calculations prescribed in the Air Quality Standards Regulations have been compiled for each pollutant. These tables are presented in each pollutant section:

• oxides of nitrogen and nitrogen dioxide (Table 7-1 to 7-86)
• particulate matter (Table 8-1 to 8-85)
• carbon monoxide (Table 9-1 to 9-49)
• sulphur dioxide (Table 10-1 to 10-64)
• ozone (Table 11-1 to 11-84)
• benzene (Table 12-1 to 12-68)
• metals (Table 13-1 to 13-57)
• B[a]P (Table 14-1 to 14-71)
• PM2.5 environmental targets (England) sites (Table 15-1 to 15-71)

Each section is split into zone codes with tables. The tables summarise the following information:

• the assessment threshold status of each zone (worst case scenario for multiple metrics)
• the calculated target number of monitoring stations: if a zone does not require monitoring, it is not included in the table
• whether a specific UB and UT station is needed in the zone
• the breakdown of existing monitoring stations and classifications within that zone (UB, UT, other)
• specific monitoring stations in the zone and their classification: if a zone does not require monitoring, no table is included

The difference between the existing network and the target number of stations is an indicator of potential network reconfiguration (including the recommendations for UT or UB monitoring changes). Negative numbers indicate the presence of more monitoring than the calculated target and positive numbers indicate that more monitoring is required to meet the target.

Note that potential changes to the UB and UT targets would also contribute to the zonal diffuse target (for example, a single station can satisfy both criteria). Monitoring station information used in this analysis was gathered in December 2024. Any new stations planned at that time have been included as such to best reflect the network. Ongoing dialogue between Defra, the Environment Agency and the Network managers ensures that rapidly developing plans are captured within individual network designs.

For PM, the existing monitoring stations are split to show the balance between PM10 and PM2.5 monitoring and the size fraction is listed for each station. Note that individual PM10 and PM2.5 instruments at the same location count as 2 separate PM monitors under the Air Quality Standards Regulations. Additional collocated measurement methods for the same size fractions are not counted as additional stations.

To illustrate this point, London Marylebone Road has, for example, both PM10 and PM2.5 and is an urban traffic station. This therefore accounts for one of the UT stations in both the PM10 and PM2.5 columns. PM monitoring within the network is dominated by FIDAS instruments and a smaller number of BAM instruments. Where FIDAS instruments are dual channel PM10 and PM2.5 instruments, these appear in this assessment as 2 co-located sites.

There are, however, some FIDAS instruments on the network that are single channel only. There are also some additional PM instruments (for example, gravimetric instruments such as Partisols) that are collocated and fulfil additional science and research functions. On rare occasions where there are several different instruments measuring the same size fraction at a single location, only one set is counted towards the requirement for compliance with the Air Quality Standards Regulations.

A single table is provided for As, Cd, Ni and Pb given the interdependencies of monitoring these species from the same filters and the assessment threshold status presented is the worst case across all 4 species.

A comparison of the current network configuration against the network-wide criteria for UB to UT ratios and PM10 to PM2.5 ratios is provided in Network-wide criteria.

NOX and NO2 monitoring station targets

Greater London Urban Area

Table 7-1: Existing monitoring and monitoring targets for NOX and NO2 - Greater London Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0001	>UAT	10	1	1	4	5	2	-1	No change required	No change required

Table 7-2: Monitoring stations and site environments for NOX and NO2 - Greater London Urban Area

Site name	Site environments
Camden Kerbside	UT
Haringey Roadside	UT
London Bexley	SB
London Bloomsbury	UB
London Haringey Priory Park South	UB
London Harlington	UI
London Hillingdon	UB
London Marylebone Road	UT
London N. Kensington	UB
London Westminster	UB
Southwark A2 Old Kent Road	UT

West Midlands Urban Area

Table 7-3 Existing monitoring and monitoring targets for NOX and NO2 - West Midlands Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0002	>UAT	6	1	1	2	4	0	0	No change required	No change required

Table 7-4: Monitoring stations and site environments for NOX and NO2 - West Midlands Urban Area

Site name	Site environments
Birmingham A4540 Roadside	UT
Birmingham Hall Green	UB
Birmingham Ladywood	UB
Oldbury Birmingham Road	UT
Walsall Woodlands	UB
West Bromwich Kenrick Park	UB

Greater Manchester Urban Area

Table 7-5: Existing monitoring and monitoring targets for NOX and NO2 - Greater Manchester Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0003	>UAT	6	1	1	2	2	1	1	No change required	No change required

Table 7-6: Monitoring stations and site environments for NOX and NO2 - Greater Manchester Urban Area

Site name	Site environments
Bury Whitefield Roadside	UT
Manchester Piccadilly	UB
Manchester Sharston	SI
Salford Eccles	UB
Shaw Crompton Way	UT

West Yorkshire Urban Area

Table 7-7: Existing monitoring and monitoring targets for NOX and NO2 - West Yorkshire Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0004	>UAT	4	1	1	2	2	0	0	No change required	No change required

Table 7-8: Monitoring stations and site environments for NOX and NO2 - West Yorkshire Urban Area

Site name	Site environments
Bradford Mayo Avenue	UT
Dewsbury Ashworth Grange	UB
Leeds Centre	UB
Leeds Headingley Kerbside	UT

 Tyneside

Table 7-9: Existing monitoring and monitoring targets for NOX and NO2 - Tyneside

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0005	>UAT	3	1	1	1	1	0	1	No change required	No change required

Table 7-10: Monitoring stations and site environments for NOX and NO2 - Tyneside

Site name	Site environments
Newcastle Centre	UB
Newcastle Cradlewell Roadside	UT

Liverpool Urban Area

Table 7-11: Existing monitoring and monitoring targets for NOX and NO2 - Liverpool Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0006	>UAT	3	1	1	1	0	1	1	No change required	Change required

Table 7-12: Monitoring stations and site environments for NOX and NO2 - Liverpool Urban Area

Site name	Site environments
Liverpool Speke	UI
St Helens Linkway	UT

Sheffield Urban Area

Table 7-13: Existing monitoring and monitoring targets for NOX and NO2 - Sheffield Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0007	>UAT	2	1	1	1	2	0	-1	No change required	No change required

Table 7-14: Monitoring stations and site environments for NOX and NO2 - Sheffield Urban Area

Site name	Site environments
Sheffield Barnsley Road	UT
Sheffield Devonshire Green	UB
Sheffield Tinsley	UB

Nottingham Urban Area

Table 7-15: Existing monitoring and monitoring targets for NOX and NO2 - Nottingham Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0008	>UAT	2	1	1	1	1	0	0	No change required	No change required

Table 7-16: Monitoring stations and site environments for NOX and NO2 - Nottingham Urban Area

Site name	Site environments
Nottingham Kenmore Gardens	UB
Nottingham Western Boulevard	UT

Bristol  Urban Area

Table 7-17: Existing monitoring and monitoring targets for NOX and NO2 - Bristol Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0009	>UAT	2	1	1	1	1	0	0	No change required	No change required

Table 7-18: Monitoring stations and site environments for NOX and NO2 - Bristol Urban Area

Site name	Site environments
Bristol St Paul’s	UB
Bristol Temple Way	UT

Brighton/Worthing/Littlehampton

Table 7-19: Existing monitoring and monitoring targets for NOX and NO2 - Brighton/Worthing/Littlehampton

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0010	LAT-UAT	1	0	0	1	1	0	-1	No change required	No change required

Table 7-20: Monitoring stations and site environments for NOX and NO2 - Brighton/Worthing/Littlehampton

Site name	Site environments
Brighton Preston Park	UB
Worthing A27 Roadside	UT

Leicester Urban Area

Table 7-21: Existing monitoring and monitoring targets for NOX and NO2 - Leicester Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0011	>UAT	2	1	1	1	1	0	0	No change required	No change required

Table 7-22: Monitoring stations and site environments for NOX and NO2 - Leicester Urban Area

Site name	Site environments
Leicester A594 Roadside	UT
Leicester University	UB

Portsmouth Urban Area

Table 7-23: Existing monitoring and monitoring targets for NOX and NO2 - Portsmouth Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0012	>UAT	2	1	1	1	1	0	0	No change required	No change required

Table 7-24: Monitoring stations and site environments for NOX and NO2 - Portsmouth Urban Area

Site name	Site environments
Portsmouth	UB
Portsmouth Anglesea Road	UT

Teesside

Table 7-25: Existing monitoring and monitoring targets for NOX and NO2 - Teesside Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0013	>UAT	2	1	1	1	1	0	0	No change required	No change required

Table 7-26: Monitoring stations and site environments for NOX and NO2 - Teesside Urban Area

Site name	Site environments
Middlesbrough	UB
Stockton-on-Tees A1305 Roadside	UT

The Potteries

Table 7-27: Existing monitoring and monitoring targets for NOX and NO2 - The Potteries

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0014	>UAT	2	1	1	1	1	0	0	No change required	No change required

Table 7-28: Monitoring stations and site environments for NOX and NO2 - The Potteries

Site name	Site environments
Stoke-on-Trent A50 Roadside	UT
Stoke-on-Trent Centre	UB

Bournemouth Urban Area

Table 7-29: Existing monitoring and monitoring targets for NOX and NO2 - Bournemouth Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0015	LAT-UAT	1	0	0	1	1	0	-1	No change required	No change required

Table 7-30: Monitoring stations and site environments for NOX and NO2 - Bournemouth Urban Area

Site name	Site environments
Bournemouth	UB
Christchurch Barrack Road	UT

Reading/Wokingham Urban Area

Table 7-31: Existing monitoring and monitoring targets for NOX and NO2 - Reading/Wokingham Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0016	LAT-UAT	1	0	0	1	1	0	-1	No change required	No change required

Table 7-32: Monitoring stations and site environments for NOX and NO2 - Reading/Wokingham Urban Area

Site name	Site environments
Reading London Road	UT
Reading New Town	UB

Coventry/Bedworth

Table 7-33: Existing monitoring and monitoring targets for NOX and NO2 - Coventry/Bedworth

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0017	>UAT	2	1	1	1	1	0	0	No change required	No change required

Table 7-34: Monitoring stations and site environments for NOX and NO2 - Coventry/Bedworth

Site name	Site environments
Coventry Allesley	UB
Coventry Binley Road	UT

Kingston upon Hull

Table 7-35: Existing monitoring and monitoring targets for NOX and NO2 - Kingston upon Hull

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0018	>UAT	2	1	1	1	1	0	0	No change required	No change required

Table 7-36: Monitoring stations and site environments for NOX and NO2 - Kingston upon Hull

Site name	Site environments
Hull Freetown	UB
Hull Holderness Road	UT

Southampton Urban Area

Table 7-37: Existing monitoring and monitoring targets for NOX and NO2 - Southampton Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0019	>UAT	2	1	1	1	1	0	0	No change required	No change required

Table 7-38: Monitoring stations and site environments for NOX and NO2 - Southampton Urban Area

Site name	Site environments
Southampton A33	UT
Southampton Centre	UB

Birkenhead Urban Area

Table 7-39: Existing monitoring and monitoring targets for NOX and NO2 - Birkenhead Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0020	LAT-UAT	1	0	0	1	1	0	-1	No change required	No change required

Table 7-40: Monitoring stations and site environments for NOX and NO2 - Birkenhead Urban Area

Site name	Site environments
Birkenhead Borough Road	UT
Wirral Tranmere	UB

Southend Urban Area

Table 7-41: Existing monitoring and monitoring targets for NOX and NO2 - Southend Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0021	LAT-UAT	1	0	0	0	1	0	0	No change required	No change required

Table 7-42: Monitoring stations and site environments for NOX and NO2 - Southend Urban Area

Site name	Site environments
Southend-on-Sea	UB

Blackpool Urban Area

Table 7-43: Existing monitoring and monitoring targets for NOX and NO2 - Blackpool Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0022	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 7-44: Monitoring stations and site environments for NOX and NO2 - Blackpool Urban Area

Site name	Site environments
Blackpool Marton	UB

Preston Urban Area

Table 7-45: Existing monitoring and monitoring targets for NOX and NO2 - Preston Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0023	LAT-UAT	1	0	0	0	1	0	0	No change required	No change required

Table 7-46: Monitoring stations and site environments for NOX and NO2 - Preston Urban Area

Site name	Site environments
Preston	UB

Glasgow Urban Area

Table 7-47: Existing monitoring and monitoring targets for NOX and NO2 - Glasgow Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0024	>UAT	4	1	1	3	1	0	0	No change required	No change required

Table 7-48: Monitoring stations and site environments for NOX and NO2 - Glasgow Urban Area

Site name	Site environments
Glasgow Great Western Road	UT
Glasgow High Street	UT
Glasgow Kerbside	UT
Glasgow Townhead	UB

Edinburgh Urban Area

Table 7-49: Existing monitoring and monitoring targets for NOX and NO2 - Edinburgh Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0025	>UAT	2	1	1	1	1	0	0	No change required	No change required

Table 7-50: Monitoring stations and site environments for NOX and NO2 - Edinburgh Urban Area

Site name	Site environments
Edinburgh Nicolson Street	UT
Edinburgh St Leonards	UB

Cardiff Urban Area

Table 7-51: Existing monitoring and monitoring targets for NOX and NO2 - Cardiff Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0026	LAT-UAT	1	0	0	1	1	0	-1	No change required	No change required

Table 7-52: Monitoring stations and site environments for NOX and NO2 - Cardiff Urban Area

Site name	Site environments
Cardiff Centre	UB
Cardiff Newport Road	UT

Swansea Urban Area

Table 7-53: Existing monitoring and monitoring targets for NOX and NO2 - Swansea Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0027	LAT-UAT	1	0	0	1	0	1	-1	No change required	No change required

Table 7-54: Monitoring stations and site environments for NOX and NO2 - Swansea Urban Area

Site name	Site environments
Port Talbot Margam	UI
Swansea Roadside	UT

Belfast Urban Area

Table 7-55: Existing monitoring and monitoring targets for NOX and NO2 - Belfast Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0028	>UAT	2	1	1	1	1	0	0	No change required	No change required

Table 7-56: Monitoring stations and site environments for NOX and NO2 - Belfast Urban Area

Site name	Site environments
Belfast Centre	UB
Belfast Stockman’s Lane	UT

Eastern

Table 7-57: Existing monitoring and monitoring targets for NOX and NO2 - Eastern

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0029	>UAT	9	1	1	4	3	2	0	No change required	No change required

Table 7-58: Monitoring stations and site environments for NOX and NO2 - Eastern

Site name	Site environments
Borehamwood Meadow Park	UB
Cambridge Roadside	UT
Luton A505 Roadside	UT
Norwich Lakenfields	UB
St Osyth	RB
Stanford-le-Hope Roadside	UT
Thurrock	UB
Wicken Fen	RB
Eastern - Sandy Roadside Replacement	UT

South West

Table 7-59: Existing monitoring and monitoring targets for NOX and NO2 - South West

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0030	LAT-UAT	4	0	0	3	3	2	-4	No change required	No change required

Table 7-60: Monitoring stations and site environments for NOX and NO2 - South West

Site name	Site environments
Bath A4 Roadside	UT
Charlton Mackrell	RB
Exeter Roadside	UT
Honiton	UB
Plymouth Centre	UB
Plymouth Tavistock Road	UT
Swindon Walcot	UB
Yarner Wood	RB

South East

Table 7-61: Existing monitoring and monitoring targets for NOX and NO2 - South East

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0031	>UAT	10	1	1	3	3	4	0	No change required	No change required

Table 7-62: Monitoring stations and site environments for NOX and NO2 - South East

Site name	Site environments
Chatham Roadside	UT
Chilbolton Observatory	RB
Eastbourne	UB
Horley	SI
Lullington Heath	RB
Oxford Centre Roadside	UT
Oxford St Ebbes	UB
Rochester Stoke	RB
Storrington Roadside	UT
South East UB - Canterbury replacement	UB

East Midlands

Table 7-63: Existing monitoring and monitoring targets for NOX and NO2 - East Midlands

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0032	>UAT	8	1	1	3	2	2	1	No change required	No change required

Table 7-64: Monitoring stations and site environments for NOX and NO2 - East Midlands

Site name	Site environments
Chesterfield Loundsley Green	UB
Chesterfield Roadside	UT
Derby St Alkmund’s Way	UT
Ladybower	RB
Lincoln Canwick Road	UT
Northampton Spring Park	UB
Toft Newton	RB

North West and Merseyside

Table 7-65: Existing monitoring and monitoring targets for NOX and NO2 - North West and Merseyside

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0033	>UAT	7	1	1	3	3	1	0	No change required	No change required

Table 7-66: Monitoring stations and site environments for NOX and NO2 - North West and Merseyside

Site name	Site environments
Blackburn Accrington Road	UT
Carlisle Morton A595	UT
Crewe Coppenhall	UB
Glazebury	RB
Warrington	UB
Widnes Milton Road	UT
Wigan Centre	UB

Yorkshire and Humberside

Table 7-67: Existing monitoring and monitoring targets for NOX and NO2 - Yorkshire and Humberside

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0034	>UAT	7	1	1	2	3	2	0	No change required	No change required

Table 7-68: Monitoring stations and site environments for NOX and NO2 - Yorkshire and Humberside

Site name	Site environments
Barnsley Gawber	UB
Doncaster A630 Cleveland Street	UT
High Muffles	RB
Immingham Woodlands Avenue	UB
Scunthorpe Town	UI
York Bootham	UB
York Fishergate	UT

West Midlands

Table 7-69: Existing monitoring and monitoring targets for NOX and NO2 - West Midlands

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0035	>UAT	7	1	1	2	3	1	1	No change required	No change required

Table 7-70: Monitoring stations and site environments for NOX and NO2 - West Midlands

Site name	Site environments
Burton-on-Trent Horninglow	UB
Cannock A5190 Roadside	UT
Leamington Spa	UB
Leamington Spa Rugby Road	UT
Leominster	SB
Telford Hollinswood	UB

North East

Table 7-71: Existing monitoring and monitoring targets for NOX and NO2 - North East

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0036	>UAT	5	1	1	2	2	0	1	No change required	No change required

Table 7-72: Monitoring stations and site environments for NOX and NO2 - North East

Site name	Site environments
Hartlepool St Abbs Walk	UB
Stockton-on-Tees Eaglescliffe	UT
Sunderland Silksworth	UB
Sunderland Wessington Way	UT

Central Scotland

Table 7-73: Existing monitoring and monitoring targets for NOX and NO2 - Central Scotland

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0037	>UAT	6	1	1	2	0	3	1	No change required	Change required

Table 7-74: Monitoring stations and site environments for NOX and NO2 - Central Scotland

Site name	Site environments
Bush Estate	RB
Dumbarton Roadside	UT
Grangemouth	UI
Grangemouth Moray	UI
Greenock A8 Roadside	UT

North East Scotland

Table 7-75: Existing monitoring and monitoring targets for NOX and NO2 - North East Scotland

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0038	>UAT	4	1	1	2	2	0	0	No change required	No change required

Table 7-76: Monitoring stations and site environments for NOX and NO2 - North East Scotland

Site name	Site environments
Aberdeen Erroll Park	UB
Aberdeen Wellington Road	UT
Dundee Mains Loan	UB
Perth Glasgow Road	UT

Highland

Table 7-77: Existing monitoring and monitoring targets for NOX and NO2 - Highland

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0039	<LAT	0	0	0	1	0	1	-2	No change required	No change required

Table 7-78: Monitoring stations and site environments for NOX and NO2 - Highland

Site name	Site environments
Fort William	SB
Inverness	UT

Scottish Borders

Table 7-79: Existing monitoring and monitoring targets for NOX and NO2 - Scottish Borders

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0040	<LAT	0	0	0	1	1	1	-3	No change required	No change required

Table 7-80: Monitoring stations and site environments for NOX and NO2 - Scottish Borders

Site name	Site environments
Dumfries	UT
Eskdalemuir	RB
Peebles	UB

South Wales

Table 7-81: Existing monitoring and monitoring targets for NOX and NO2 - South Wales

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0041	>UAT	5	1	1	2	2	1	0	No change required	No change required

Table 7-82: Monitoring stations and site environments for NOX and NO2 - South Wales

Site name	Site environments
Chepstow A48	UT
Cwmbran Crownbridge	UB
Hafod-yr-ynys Hill Roadside	UT
Narberth	RB
Newport	UB

North Wales

Table 7-83: Existing monitoring and monitoring targets for NOX and NO2 - North Wales

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0042	>UAT	3	1	1	1	0	1	1	No change required	Change required

Table 7-84: Monitoring stations and site environments for NOX and NO2 - North Wales

Site name	Site environments
Aston Hill	RB
Wrexham	UT

Northern Ireland

Table 7-85: Existing monitoring and monitoring targets for NOX and NO2 - Northern Ireland

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0043	<LAT	0	0	0	2	2	0	-4	No change required	No change required

Table 7-86: Monitoring stations and site environments for NOX and NO2 - Northern Ireland

Site name	Site environments
Armagh Roadside	UT
Ballymena Antrim Road	UT
Ballymena Ballykeel	UB
Derry Rosemount	UB

PM10 and PM2.5 monitoring station targets

Note that stations marked with an * are the urban background sites that are used for assessment of the AEI (as listed in Annex 1).

Greater London Urban Area

Table 8-1: Existing monitoring and monitoring targets for PM10 and PM2.5 - Greater London Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0001	>UAT	8	1	1	5	5	2	3	6	2	-15	No change required	No change required

Table 8-2: Monitoring stations and site environments for PM10 and PM2.5 - Greater London Urban Area

Station name	Station type	Size fraction
Camden Kerbside	UT	Both
Ealing Horn Lane	UT	PM10
London Bexley*	SB	Both
London Bloomsbury*	UB	Both
London Harlington	UI	Both
London Hillingdon	UB	Both
London Honor Oak Park*	UB	Both
London Marylebone Road	UT	Both
London Marylebone Road Partisol	UT	Both
London N. Kensington*	UB	Both
London Teddington Bushy Park*	UB	Both
London Westminster*	UB	PM2.5
Southwark A2 Old Kent Road	UT	PM10

West Midlands Urban Area

Table 8-3 Existing monitoring and monitoring targets for PM10 and PM2.5 - West Midlands Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0002	LAT-UAT	2	0	0	1	2	0	1	2	0	-4	No change required	No change required

Table 8-4: Monitoring stations and site environments for PM10 and PM2.5 - West Midlands Urban Area

Station name	Station type	Size fraction
Birmingham A4540 Roadside	UT	Both
Birmingham Hall Green	UB	Both
Birmingham Ladywood*	UB	Both

Greater Manchester Urban Area

Table 8-5: Existing monitoring and monitoring targets for PM10 and PM2.5 - Greater Manchester Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0003	LAT-UAT	2	0	0	1	2	1	0	2	1	-5	No change required	No change required

Table 8-6: Monitoring stations and site environments for PM10 and PM2.5 - Greater Manchester Urban Area

Station name	Station type	Size fraction
Bury Whitefield Roadside	UT	PM10
Manchester Piccadilly*	UB	Both
Manchester Sharston	SI	Both
Salford Eccles	UB	Both

West Yorkshire Urban Area

Table 8-7: Existing monitoring and monitoring targets for PM10 and PM2.5 - West Yorkshire Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0004	LAT-UAT	2	0	0	1	2	0	1	2	0	-4	No change required	No change required

Table 8-8: Monitoring stations and site environments for PM10 and PM2.5 - West Yorkshire Urban Area

Station name	Station type	Size fraction
Dewsbury Ashworth Grange	UB	Both
Leeds Centre*	UB	Both
Leeds Headingley Kerbside	UT	Both

 Tyneside

Table 8-9: Existing monitoring and monitoring targets for PM10 and PM2.5 - Tyneside

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0005	LAT-UAT	1	0	0	1	1	0	1	1	0	-3	No change required	No change required

Table 8-10: Monitoring stations and site environments for PM10 and PM2.5 - Tyneside

Station name	Station type	Size fraction
Newcastle Centre*	UB	Both
Newcastle Cradlewell Roadside	UT	Both

Liverpool Urban Area

Table 8-11: Existing monitoring and monitoring targets for PM10 and PM2.5 - Liverpool Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0006	LAT-UAT	1	0	0	1	0	1	0	0	1	-2	No change required	No change required

Table 8-12: Monitoring stations and site environments for PM10 and PM2.5 - Liverpool Urban Area

Station name	Station type	Size fraction
Liverpool Speke	UI	Both
St Helens Linkway	UT	PM10

Sheffield  Urban Area

Table 8-13: Existing monitoring and monitoring targets for PM10 and PM2.5 - Sheffield Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0007	LAT-UAT	1	0	0	0	3	0	1	3	0	-6	No change required	No change required

Table 8-14: Monitoring stations and site environments for PM10 and PM2.5 – Sheffield Urban Area

Station name	Station type	Size fraction
Rotherham East Dene	UB	Both
Sheffield Barnsley Road	UT	PM2.5
Sheffield Devonshire Green*	UB	Both
Sheffield Tinsley	UB	Both

Nottingham Urban Area

Table 8-15: Existing monitoring and monitoring targets for PM10 and PM2.5 - Nottingham  Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0008	LAT-UAT	1	0	0	1	1	0	1	1	0	-3	No change required	No change required

Table 8-16: Monitoring stations and site environments for PM10 and PM2.5 - Nottingham Urban Area

Station name	Station type	Size fraction
Nottingham Kenmore Gardens	UB	Both
Nottingham Western Boulevard	UT	Both

Bristol  Urban Area

Table 8-17: Existing monitoring and monitoring targets for PM10 and PM2.5 - Bristol  Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0009	LAT-UAT	1	0	0	1	1	0	1	1	0	-3	No change required	No change required

Table 8-18: Monitoring stations and site environments for PM10 and PM2.5 - Bristol Urban Area

Station name	Station type	Size fraction
Bristol St Paul’s*	UB	Both
Bristol Temple Way	UT	Both

Brighton/Worthing/Littlehampton

Table 8-19: Existing monitoring and monitoring targets for PM10 and PM2.5 - Brighton/Worthing/Littlehampton

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0010	LAT-UAT	1	0	0	0	2	0	1	2	0	-4	No change required	No change required

Table 8-20: Monitoring stations and site environments for PM10 and PM2.5 - Brighton/Worthing/Littlehampton

Station name	Station type	Size fraction
Brighton Preston Park*	UB	Both
Worthing A27 Roadside	UT	PM2.5
Worthing East Ten Acres	UB	Both

Leicester Urban Area

Table 8-21: Existing monitoring and monitoring targets for PM10 and PM2.5 - Leicester Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0011	LAT-UAT	1	0	0	1	1	0	1	1	0	-3	No change required	No change required

Table 8-22: Monitoring stations and site environments for PM10 and PM2.5 - Leicester Urban Area

Station name	Station type	Size fraction
Leicester A594 Roadside	UT	Both
Leicester University*	UB	Both

Portsmouth Urban Area

Table 8-23: Existing monitoring and monitoring targets for PM10 and PM2.5 - Portsmouth Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0012	LAT-UAT	1	0	0	1	1	0	1	1	0	-3	No change required	No change required

Table 8-24: Monitoring stations and site environments for PM10 and PM2.5 - Portsmouth Urban Area

Station name	Station type	Size fraction
Portsmouth*	UB	Both
Portsmouth Anglesea Road	UT	Both

Teesside

Table 8-25: Existing monitoring and monitoring targets for PM10 and PM2.5 - Teesside Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0013	LAT-UAT	1	0	0	0	1	0	1	1	0	-2	No change required	No change required

Table 8-26: Monitoring stations and site environments for PM10 and PM2.5 - Teesside Urban Area

Station name	Station type	Size fraction
Middlesbrough	UB	Both
Stockton-on-Tees A1305 Roadside	UT	PM2.5

The Potteries

Table 8-27: Existing monitoring and monitoring targets for PM10 and PM2.5 - The Potteries

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0014	LAT-UAT	1	0	0	1	1	0	1	1	0	-3	No change required	No change required

Table 8-28: Monitoring stations and site environments for PM10 and PM2.5 - The Potteries

Station name	Station type	Size fraction
Stoke-on-Trent A50 Roadside	UT	Both
Stoke-on-Trent Centre*	UB	Both

Bournemouth Urban Area

Table 8-29: Existing monitoring and monitoring targets for PM10 and PM2.5 - Bournemouth Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0015	LAT-UAT	1	0	0	0	0	0	1	1	0	-1	No change required	No change required

Table 8-30: Monitoring stations and site environments for PM10 and PM2.5 - Bournemouth Urban Area

Station name	Station type	Size fraction
Bournemouth*	UB	PM2.5
Christchurch Barrack Road	UT	PM2.5

Reading/Wokingham Urban Area

Table 8-31: Existing monitoring and monitoring targets for PM10 and PM2.5 - Reading/Wokingham Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0016	LAT-UAT	1	0	0	1	1	0	1	1	0	-3	No change required	No change required

Table 8-32: Monitoring stations and site environments for PM10 and PM2.5 - Reading/Wokingham Urban Area

Station name	Station type	Size fraction
Reading London Road	UT	PM10
Reading New Town*	UB	Both
Reading Rose Kiln Lane	UT	PM2.5

Coventry/Bedworth

Table 8-33: Existing monitoring and monitoring targets for PM10 and PM2.5 - Coventry/Bedworth

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0017	LAT-UAT	1	0	0	1	1	0	1	1	0	-3	No change required	No change required

Table 8-34: Monitoring stations and site environments for PM10 and PM2.5 - Coventry/Bedworth

Station name	Station type	Size fraction
Coventry Allesley*	UB	Both
Coventry Binley Road	UT	Both

Kingston upon Hull

Table 8-35: Existing monitoring and monitoring targets for PM10 and PM2.5 - Kingston upon Hull

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0018	LAT-UAT	1	0	0	1	1	0	1	1	0	-3	No change required	No change required

Table 8-36: Monitoring stations and site environments for PM10 and PM2.5 - Kingston upon Hull

Station name	Station type	Size fraction
Hull Freetown*	UB	Both
Hull Holderness Road	UT	Both

Southampton Urban Area

Table 8-37: Existing monitoring and monitoring targets for PM10 and PM2.5 - Southampton Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0019	LAT-UAT	1	0	0	1	1	0	1	1	0	-3	No change required	No change required

Table 8-38: Monitoring stations and site environments for PM10 and PM2.5 - Southampton Urban Area

Station name	Station type	Size fraction
Southampton A33	UT	Both
Southampton Centre*	UB	Both

Birkenhead Urban Area

Table 8-39: Existing monitoring and monitoring targets for PM10 and PM2.5 - Birkenhead Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0020	LAT-UAT	1	0	0	0	1	0	1	1	0	-2	No change required	No change required

Table 8-40: Monitoring stations and site environments for PM10 and PM2.5 - Birkenhead Urban Area

Station name	Station type	Size fraction
Birkenhead Borough Road	UT	PM2.5

Wirral Tranmere*

UB

Both

Southend Urban Area

Table 8-41: Existing monitoring and monitoring targets for PM10 and PM2.5 - Southend Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0021	LAT-UAT	1	0	0	0	1	0	0	1	0	-1	No change required	No change required

Table 8-42: Monitoring stations and site environments for PM10 and PM2.5 - Southend Urban Area

Station name	Station type	Size fraction
Southend-on-Sea*	UB	Both

Blackpool Urban Area

Table 8-43: Existing monitoring and monitoring targets for PM10 and PM2.5 - Blackpool Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0022	<LAT	0	0	0	0	1	0	1	1	0	-3	No change required	No change required

Table 8-44: Monitoring stations and site environments for PM10 and PM2.5 - Blackpool Urban Area

Station name	Station type	Size fraction
Blackpool Marton*	UB	Both
Blackpool Whitegate Drive	UT	PM2.5

Preston Urban Area

Table 8-45: Existing monitoring and monitoring targets for PM10 and PM2.5 - Preston Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0023	LAT-UAT	1	0	0	0	1	0	0	1	0	-1	No change required	No change required

Table 8-46: Monitoring stations and site environments for PM10 and PM2.5 - Preston Urban Area

Station name	Station type	Size fraction
Preston*	UB	Both

Glasgow Urban Area

Table 8-47: Existing monitoring and monitoring targets for PM10 and PM2.5 - Glasgow Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0024	LAT-UAT	2	0	0	1	1	0	1	1	0	-2	No change required	No change required

Table 8-48: Monitoring stations and site environments for PM10 and PM2.5 - Glasgow Urban Area

Station name	Station type	Size fraction
Glasgow High Street	UT	Both
Glasgow Townhead*	UB	Both

Edinburgh Urban Area

Table 8-49: Existing monitoring and monitoring targets for PM10 and PM2.5 - Edinburgh Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0025	LAT-UAT	1	0	0	0	1	0	0	1	0	-1	No change required	No change required

Table 8-50: Monitoring stations and site environments for PM10 and PM2.5 - Edinburgh Urban Area

Station name	Station type	Size fraction
Edinburgh St Leonards*	UB	Both

Cardiff Urban Area

Table 8-51: Existing monitoring and monitoring targets for PM10 and PM2.5 - Cardiff Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0026	LAT-UAT	1	0	0	1	1	0	0	1	0	-2	No change required	No change required

Table 8-52: Monitoring stations and site environments for PM10 and PM2.5 - Cardiff Urban Area

Station name	Station type	Size fraction
Cardiff Centre*	UB	Both
Cardiff Newport Road	UT	PM10

Swansea Urban Area

Table 8-53: Existing monitoring and monitoring targets for PM10 and PM2.5 - Swansea Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0027	>UAT	1	0	0	1	0	2	1	0	1	-4	No change required	No change required

Table 8-54: Monitoring stations and site environments for PM10 and PM2.5 - Swansea Urban Area

Station name	Station type	Size fraction
Port Talbot Margam	UI	Both
Port Talbot Margam PM10	UI	PM10
Swansea Roadside	UT	Both

Belfast Urban Area

Table 8-55: Existing monitoring and monitoring targets for PM10 and PM2.5 - Belfast Urban Area

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0028	LAT-UAT	1	0	0	1	1	0	0	1	0	-2	No change required	No change required

Table 8-56: Monitoring stations and site environments for PM10 and PM2.5 - Belfast Urban Area

Station name	Station type	Size fraction
Belfast Centre*	UB	Both
Belfast Stockman’s Lane	UT	PM10

Eastern

Table 8-57: Existing monitoring and monitoring targets for PM10 and PM2.5 - Eastern

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0029	LAT-UAT	3	0	0	2	4	4	3	4	4	-18	No change required	No change required

Table 8-58: Monitoring stations and site environments for PM10 and PM2.5 - Eastern

Station name	Station type	Size fraction
Borehamwood Meadow Park	UB	Both
Luton A505 Roadside	UT	PM2.5
Norwich Lakenfields*	UB	Both
Peterborough Garton End	UB	Both
Sandy Roadside	UT	Both
Sibton	RB	Both
St Osyth	RB	Both
Stanford-le-Hope Roadside	UT	Both
Thurrock	UB	Both
Weybourne	RB	Both
Wicken Fen	RB	Both

South West

Table 8-59: Existing monitoring and monitoring targets for PM10 and PM2.5 - South West

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0030	LAT-UAT	3	0	0	2	3	2	3	3	2	-12	No change required	No change required

Table 8-60: Monitoring stations and site environments for PM10 and PM2.5 - South West

Station name	Station type	Size fraction
Barnstaple A39	UT	Both
Charlton Mackrell	RB	Both
Honiton	UB	Both
Plymouth Centre*	UB	Both
Saltash Callington Road	UT	Both
Swindon Walcot	UB	Both
Yarner Wood	RB	Both

South East

Table 8-61: Existing monitoring and monitoring targets for PM10 and PM2.5 - South East

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0031	>UAT	8	1	1	3	4	4	3	4	4	-14	No change required	No change required

Table 8-62: Monitoring stations and site environments for PM10 and PM2.5 - South East

Station name	Station type	Size fraction
Cheltenham A40 Gloucester Road	UT	PM2.5
Chatham Roadside	UT	Both
Chilbolton Observatory	RB	Both
Eastbourne*	UB	Both
Horley	SI	Both
Lullington Heath	RB	Both
Maidstone Upper Stone Street	UT	Both
Milton Keynes Civic Centre	UB	Both
Oxford St Ebbes*	UB	Both
Rochester Stoke	RB	Both
Storrington Roadside	UT	Both

East Midlands

Table 8-63: Existing monitoring and monitoring targets for PM10 and PM2.5 - East Midlands

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0032	LAT-UAT	3	0	0	1	3	3	2	4	3	-13	No change required	No change required

Table 8-64: Monitoring stations and site environments for PM10 and PM2.5 - East Midlands

Station name	Station type	Size fraction
Canterbury	UB	Both
Chesterfield Loundsley Green*	UB	Both
Chesterfield Roadside	UT	Both
Derby St Alkmund’s Way	UT	PM2.5
Derby Stockbrook Park	UB	Both
Ladybower	RB	Both
Mansfield Ladybrook	UB	Both
Northampton Spring Park*	UB	PM2.5
Tallington	RB	Both
Toft Newton	RB	Both

North West and Merseyside

Table 8-65: Existing monitoring and monitoring targets for PM10 and PM2.5 - North West and Merseyside

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0033	LAT-UAT	2	0	0	1	4	1	2	4	1	-11	No change required	No change required

Table 8-66: Monitoring stations and site environments for PM10 and PM2.5 - North West and Merseyside

Station name	Station type	Size fraction
Blackburn Audley Park	UB	Both
Carlisle Morton A595	UT	Both
Crewe Coppenhall	UB	Both
Glazebury	RB	Both
Middlewich St Michael’s Way	UT	PM2.5
Warrington	UB	Both
Wigan Centre*	UB	Both

Yorkshire and Humberside

Table 8-67: Existing monitoring and monitoring targets for PM10 and PM2.5 - Yorkshire and Humberside

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0034	LAT-UAT	2	0	0	1	3	2	2	3	1	-10	No change required	No change required

Table 8-68: Monitoring stations and site environments for PM10 and PM2.5 - Yorkshire and Humberside

Station name	Station type	Size fraction
Barnsley Gawber	UB	Both
Doncaster A630 Cleveland Street	UT	PM2.5
High Muffles	RB	Both
Immingham Woodlands Avenue	UB	Both
Scunthorpe Town	UI	PM10
York Bootham*	UB	Both
York Fishergate	UT	Both

West Midlands

Table 8-69: Existing monitoring and monitoring targets for PM10 and PM2.5 - West Midlands

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0035	LAT-UAT	2	0	0	1	4	0	2	4	0	-9	No change required	No change required

Table 8-70: Monitoring stations and site environments for PM10 and PM2.5 - West Midlands

Station name	Station type	Size fraction
Burton-on-Trent Horninglow	UB	Both
Cannock A5190 Roadside	UT	PM2.5
Leamington Spa*	UB	Both
Leamington Spa Rugby Road	UT	Both
Shrewsbury Underdale	UB	Both
Telford Hollinswood	UB	Both

North East

Table 8-71: Existing monitoring and monitoring targets for PM10 and PM2.5 - North East

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0036	LAT-UAT	2	0	0	1	2	1	2	2	1	-7	No change required	No change required

Table 8-72: Monitoring stations and site environments for PM10 and PM2.5 - North East

Station name	Station type	Size fraction
Hartlepool St Abbs Walk	UB	Both
Kielder Water	RB	Both
Stockton-on-Tees Eaglescliffe	UT	Both
Sunderland Silksworth*	UB	Both
Sunderland Wessington Way	UT	PM2.5

Central Scotland

Table 8-73: Existing monitoring and monitoring targets for PM10 and PM2.5 - Central Scotland

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0037	LAT-UAT	2	0	0	1	0	2	1	0	2	-4	No change required	No change required

Table 8-74: Monitoring stations and site environments for PM10 and PM2.5 - Central Scotland

Station name	Station type	Size fraction
Auchencorth Moss	RB	Both
Grangemouth	UI	Both
Greenock A8 Roadside	UT	Both

North East Scotland

Table 8-75: Existing monitoring and monitoring targets for PM10 and PM2.5 - North East Scotland

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0038	<LAT	0	0	0	0	1	0	0	1	0	-2	No change required	No change required

Table 8-76: Monitoring stations and site environments for PM10 and PM2.5 - North East Scotland

Station name	Station type	Size fraction
Aberdeen Erroll Park*	UB	Both

Highland

Table 8-77: Existing monitoring and monitoring targets for PM10 and PM2.5 - Highland

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0039	<LAT	0	0	0	1	0	0	1	0	0	-2	No change required	No change required

Table 8-78: Monitoring stations and site environments for PM10 and PM2.5 - Highland

Station name	Station type	Size fraction
Inverness	UT	Both

Scottish Borders

Table 8-79: Existing monitoring and monitoring targets for PM10 and PM2.5 - Scottish Borders

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB		Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0040	<LAT	0	0	0	0	0	0	0	0	0	0	No change required	No change required

South Wales

Table 8-80: Existing monitoring and monitoring targets for PM10 and PM2.5 - South Wales

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0041	LAT-UAT	2	0	0	1	1	1	1	1	1	-4	No change required	No change required

Table 8-81: Monitoring stations and site environments for PM10 and PM2.5 - South Wales

Station name	Station type	Size fraction
Chepstow A48	UT	Both
Narberth	RB	Both
Newport*	UB	Both

North Wales

Table 8-82: Existing monitoring and monitoring targets for PM10 and PM2.5 - North Wales

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0042	LAT-UAT	1	0	0	1	0	0	1	0	0	-1	No change required	No change required

Table 8-83: Monitoring stations and site environments for PM10 and PM2.5 - North Wales

Station name	Station type	Size fraction
Wrexham	UT	Both

Northern Ireland

Table 8-84: Existing monitoring and monitoring targets for PM10 and PM2.5 - Northern Ireland

Zone code	AT status	Target monitoring	Required UT	Required UB	UT (PM10)	UB (PM10)	Other (PM10)	UT (PM2.5)	UB (PM2.5)	Other (PM2.5)	Number to target (diffuse)	Required UB	Existing Monitoring
UK0043	LAT-UAT	2	0	0	1	1	1	0	1	1	-3	No change required	No change required

Table 8-85: Monitoring stations and site environments for PM10 and PM2.5 - Northern Ireland

Station name	Station type	Size fraction
Armagh Roadside	UT	PM10
Derry Rosemount	UB	Both
Lough Navar	RB	Both

CO monitoring station targets

Greater London Urban Area

Table 9-1: Existing monitoring and monitoring targets for CO - Greater London Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0001	<LAT	0	0	0	1	1	0	-2	No change required	No change required

Table 9-2: Monitoring stations and site environments for CO - Greater London Urban Area

Site name	Site environments
London Marylebone Road	UT
London N. Kensington	UB

West Midlands Urban Area

Table 9-3 Existing monitoring and monitoring targets for CO - West Midlands Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0002	<LAT	0	0	0	0	0	0	0	No change required	No change required

Greater Manchester Urban Area

Table 9-4: Existing monitoring and monitoring targets for CO - Greater Manchester Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0003	<LAT	0	0	0	0	0	0	0	No change required	No change required

West Yorkshire Urban Area

Table 9-5: Existing monitoring and monitoring targets for CO - West Yorkshire Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0004	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 9-6: Monitoring stations and site environments for CO - West Yorkshire Urban Area

Site name	Site environments
Leeds Centre	UB

 Tyneside

Table 9-7: Existing monitoring and monitoring targets for CO - Tyneside

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0005	<LAT	0	0	0	0	0	0	0	No change required	No change required

Liverpool Urban Area

Table 9-8: Existing monitoring and monitoring targets for CO - Liverpool Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0006	<LAT	0	0	0	0	0	0	0	No change required	No change required

Sheffield Urban Area

Table 9-9: Existing monitoring and monitoring targets for CO - Sheffield Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0007	<LAT	0	0	0	0	0	0	0	No change required	No change required

Nottingham Urban Area

Table 9-10: Existing monitoring and monitoring targets for CO - Nottingham Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0008	<LAT	0	0	0	0	0	0	0	No change required	No change required

Bristol Urban Area

Table 9-11: Existing monitoring and monitoring targets for CO - Bristol Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0009	<LAT	0	0	0	0	0	0	0	No change required	No change required

Brighton/Worthing/Littlehampton

Table 9-12: Existing monitoring and monitoring targets for CO - Brighton/Worthing/Littlehampton

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0010	<LAT	0	0	0	0	0	0	0	No change required	No change required

Leicester Urban Area

Table 9-13: Existing monitoring and monitoring targets for CO - Leicester Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0011	<LAT	0	0	0	0	0	0	0	No change required	No change required

Portsmouth Urban Area

Table 9-14: Existing monitoring and monitoring targets for CO - Portsmouth Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0012	<LAT	0	0	0	0	0	0	0	No change required	No change required

Teesside

Table 9-15: Existing monitoring and monitoring targets for CO - Teesside Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0013	<LAT	0	0	0	0	0	0	0	No change required	No change required

The Potteries

Table 9-16: Existing monitoring and monitoring targets for CO - The Potteries

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0014	<LAT	0	0	0	0	0	0	0	No change required	No change required

Bournemouth Urban Area

Table 9-17: Existing monitoring and monitoring targets for CO - Bournemouth Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0015	<LAT	0	0	0	0	0	0	0	No change required	No change required

Reading/Wokingham Urban Area

Table 9-18: Existing monitoring and monitoring targets for CO - Reading/Wokingham Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0016	<LAT	0	0	0	0	0	0	0	No change required	No change required

Coventry/Bedworth

Table 9-19: Existing monitoring and monitoring targets for CO - Coventry/Bedworth

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0017	<LAT	0	0	0	0	0	0	0	No change required	No change required

Kingston upon Hull

Table 9-20: Existing monitoring and monitoring targets for CO - Kingston upon Hull

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0018	<LAT	0	0	0	0	0	0	0	No change required	No change required

Southampton Urban Area

Table 9-21: Existing monitoring and monitoring targets for CO - Southampton Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0019	<LAT	0	0	0	0	0	0	0	No change required	No change required

Birkenhead Urban Area

Table 9-22: Existing monitoring and monitoring targets for CO - Birkenhead Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0020	<LAT	0	0	0	0	0	0	0	No change required	No change required

Southend Urban Area

Table 9-23: Existing monitoring and monitoring targets for CO - Southend Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0021	<LAT	0	0	0	0	0	0	0	No change required	No change required

Blackpool Urban Area

Table 9-24: Existing monitoring and monitoring targets for CO - Blackpool Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0022	<LAT	0	0	0	0	0	0	0	No change required	No change required

Preston Urban Area

Table 9-25: Existing monitoring and monitoring targets for CO - Preston Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0023	<LAT	0	0	0	0	0	0	0	No change required	No change required

Glasgow Urban Area

Table 9-26: Existing monitoring and monitoring targets for CO - Glasgow Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0024	<LAT	0	0	0	0	0	0	0	No change required	No change required

Edinburgh Urban Area

Table 9-27: Existing monitoring and monitoring targets for CO - Edinburgh Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0025	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 9-28: Monitoring stations and site environments for CO - Edinburgh Urban Area

Site name	Site environments
Edinburgh St Leonards	UB

Cardiff Urban Area

Table 9-29: Existing monitoring and monitoring targets for CO - Cardiff Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0026	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 9-30: Monitoring stations and site environments for CO - Cardiff Urban Area

Site name	Site environments
Cardiff Centre	UB

Swansea Urban Area

Table 9-31: Existing monitoring and monitoring targets for CO - Swansea Urban Area

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0027	<LAT	0	0	0	0	0	1	-1	No change required	No change required

Table 9-32: Monitoring stations and site environments for CO - Swansea Urban Area

Site name	Site environments
Port Talbot Margam	UI

Belfast Urban Area

Table 9-33: Existing monitoring and monitoring targets for CO - Belfast Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0028	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 9-34: Monitoring stations and site environments for CO - Belfast Urban Area

Site name	Site environments
Belfast Centre	UB

Eastern

Table 9-35: Existing monitoring and monitoring targets for CO - Eastern

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0029	<LAT	0	0	0	0	0	0	0	No change required	No change required

South West

Table 9-36: Existing monitoring and monitoring targets for CO - South West

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0030	<LAT	0	0	0	0	0	0	0	No change required	No change required

South East

Table 9-37: Existing monitoring and monitoring targets for CO - South East

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0031	<LAT	0	0	0	0	0	0	0	No change required	No change required

East Midlands

Table 9-38: Existing monitoring and monitoring targets for CO - East Midlands

Zone code	AT status	Required monitoring	Required UT	Required UB	UT	UB	Other	Number to target	UT target	UB target
UK0032	<LAT	0	0	0	0	0	0	0	No change required	No change required

North West and Merseyside

Table 9-39: Existing monitoring and monitoring targets for CO - North West and Merseyside

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0033	<LAT	0	0	0	0	0	0	0	No change required	No change required

Yorkshire and Humberside

Table 9-40: Existing monitoring and monitoring targets for CO - Yorkshire and Humberside

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0034	<LAT	0	0	0	0	0	0	0	No change required	No change required

West Midlands

Table 9-41: Existing monitoring and monitoring targets for CO - West Midlands

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0035	<LAT	0	0	0	0	0	0	0	No change required	No change required

North East

Table 9-42: Existing monitoring and monitoring targets for CO - North East

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0036	<LAT	0	0	0	0	0	0	0	No change required	No change required

Central Scotland

Table 9-43: Existing monitoring and monitoring targets for CO - Central Scotland

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0037	<LAT	0	0	0	0	0	0	0	No change required	No change required

North East Scotland

Table 9-44: Existing monitoring and monitoring targets for CO - North East Scotland

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0038	<LAT	0	0	0	0	0	0	0	No change required	No change required

Highland

Table 9-45: Existing monitoring and monitoring targets for CO - Highland

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0039	<LAT	0	0	0	0	0	0	0	No change required	No change required

Scottish Borders

Table 9-46: Existing monitoring and monitoring targets for NOX and NO2 - Scottish Borders

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0040	<LAT	0	0	0	0	0	0	0	No change required	No change required

South Wales

Table 9-47: Existing monitoring and monitoring targets for CO - South Wales

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0041	<LAT	0	0	0	0	0	0	0	No change required	No change required

North Wales

Table 9-48: Existing monitoring and monitoring targets for CO - North Wales

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0042	<LAT	0	0	0	0	0	0	0	No change required	No change required

Northern Ireland

Table 9-49: Existing monitoring and monitoring targets for CO - Northern Ireland

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0043	<LAT	0	0	0	0	0	0	0	No change required	No change required

SO2 monitoring station targets

Greater London Urban Area

Table 10-1: Existing monitoring and monitoring targets for SO2 - Greater London Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK00001	<LAT	0	1	2	0	-3

Table 10-2: Monitoring stations and site environments for SO2 - Greater London Urban Area

Site name	Site environments
London Bloomsbury	UB
London Marylebone Road	UT
London N. Kensington	UB

West Midlands Urban Area

Table 10-3 Existing monitoring and monitoring targets for SO2 - West Midlands Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0002	<LAT	0	0	1	0	-1

Table 10-4: Monitoring stations and site environments for SO2 - West Midlands Urban Area

Site name	Site environments
Birmingham Ladywood	UB

Greater Manchester Urban Area

Table 10-5: Existing monitoring and monitoring targets for SO2 - Greater Manchester Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0003	<LAT	0	0	1	0	-1

Table 10-6: Monitoring stations and site environments for SO2 - Greater Manchester Urban Area

Site name	Site environments
Manchester Piccadilly	UB

West Yorkshire Urban Area

Table 10-7: Existing monitoring and monitoring targets for SO2 - West Yorkshire Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0004	<LAT	0	0	1	0	-1

Table 10-8: Monitoring stations and site environments for SO2 - West Yorkshire Urban Area

Site name	Site environments
Leeds Centre	UB

Tyneside

Table 10-9: Existing monitoring and monitoring targets for SO2 - Tyneside

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0005	<LAT	0	0	0	0	0

Liverpool Urban Area

Table 10-10: Existing monitoring and monitoring targets for SO2 - Liverpool Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0006	<LAT	0	0	0	1	-1

Table 10-11: Monitoring stations and site environments for SO2 - Liverpool Urban Area

Site name	Site environments
Liverpool Speke	UI

Sheffield Urban Area

Table 10-12: Existing monitoring and monitoring targets for SO2 - Sheffield Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0007	<LAT	0	0	0	0	0

Nottingham Urban Area

Table 10-13: Existing monitoring and monitoring targets for SO2 - Nottingham Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0008	<LAT	0	0	1	0	-1

Table 10-14: Monitoring stations and site environments for SO2 - Nottingham Urban Area

Site name	Site environments
Nottingham Kenmore Gardens	UB

Bristol Urban Area

Table 10-15: Existing monitoring and monitoring targets for SO2 - Bristol Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0009	<LAT	0	0	0	0	0

Brighton/Worthing/Littlehampton

Table 10-16: Existing monitoring and monitoring targets for SO2 - Brighton/Worthing/Littlehampton

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0010	<LAT	0	0	0	0	0

Leicester Urban Area

Table 10-17: Existing monitoring and monitoring targets for SO2 - Leicester Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0011	<LAT	0	0	0	0	0

Portsmouth Urban Area

Table 10-18: Existing monitoring and monitoring targets for SO2 - Portsmouth Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0012	<LAT	0	0	0	0	0

Teesside

Table 10-19: Existing monitoring and monitoring targets for SO2 - Teesside Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0013	<LAT	0	0	1	0	-1

Table 10-20: Monitoring stations and site environments for SO2 - Teesside Urban Area

Site name	Site environments
Middlesbrough	UB

The Potteries

Table 10-21: Existing monitoring and monitoring targets for SO2 - The Potteries

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0014	<LAT	0	0	0	0	0

Bournemouth Urban Area

Table 10-22: Existing monitoring and monitoring targets for SO2 - Bournemouth Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0015	<LAT	0	0	0	0	0

Reading/Wokingham Urban Area

Table 10-23: Existing monitoring and monitoring targets for SO2 - Reading/Wokingham Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0016	<LAT	0	0	0	0	0

Coventry/Bedworth

Table 10-24: Existing monitoring and monitoring targets for SO2 - Coventry/Bedworth

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0017	<LAT	0	0	0	0	0

Kingston upon Hull

Table 10-25: Existing monitoring and monitoring targets for SO2 - Kingston upon Hull

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0018	<LAT	0	0	1	0	-1

Table 10-26: Monitoring stations and site environments for SO2 - Kingston upon Hull

Site name	Site environments
Hull Freetown	UB

Southampton Urban Area

Table 10-27: Existing monitoring and monitoring targets for SO2 - Southampton Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0019	<LAT	0	0	1	0	-1

Table 10-28: Monitoring stations and site environments for SO2 - Southampton Urban Area

Site name	Site environments
Southampton Centre	UB

Birkenhead Urban Area

Table 10-29: Existing monitoring and monitoring targets for SO2 - Birkenhead Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0020	<LAT	0	0	0	0	0

Southend Urban Area

Table 10-30: Existing monitoring and monitoring targets for SO2 - Southend Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0021	<LAT	0	0	0	0	0

Blackpool Urban Area

Table 10-31: Existing monitoring and monitoring targets for SO2 - Blackpool Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0022	<LAT	0	0	0	0	0

Preston Urban Area

Table 10-32: Existing monitoring and monitoring targets for SO2 - Preston Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0023	<LAT	0	0	0	0	0

Glasgow Urban Area

Table 10-33: Existing monitoring and monitoring targets for SO2 - Glasgow Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0024	<LAT	0	0	0	0	0

Edinburgh Urban Area

Table 10-34: Existing monitoring and monitoring targets for SO2 - Edinburgh Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0025	<LAT	0	0	1	0	-1

Table 10-35: Monitoring stations and site environments for SO2 - Edinburgh Urban Area

Site name	Site environments
Edinburgh St Leonards	UB

Cardiff Urban Area

Table 10-36: Existing monitoring and monitoring targets for SO2 - Cardiff Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0026	<LAT	0	0	1	0	-1

Table 10-37: Monitoring stations and site environments for SO2 - Cardiff Urban Area

Site name	Site environments
Cardiff Centre	UB

Swansea Urban Area

Table 10-38: Existing monitoring and monitoring targets for SO2 - Swansea Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0027	<LAT	0	0	0	1	-1

Table 10-39: Monitoring stations and site environments for SO2 - Swansea Urban Area

Site name	Site environments
Port Talbot Margam	UI

Belfast Urban Area

Table 10-40: Existing monitoring and monitoring targets for SO2 - Belfast Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0028	<LAT	0	0	1	0	-1

Table 10-41: Monitoring stations and site environments for SO2 - Belfast Urban Area

Site name	Site environments
Belfast Centre	UB

Eastern

Table 10-42: Existing monitoring and monitoring targets for SO2 - Eastern

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0029	<LAT	0	0	1	1	-2

Table 10-43: Monitoring stations and site environments for SO2 - Eastern

Site name	Site environments
Thurrock	RB
Wicken Fen	RB

South West

Table 10-44: Existing monitoring and monitoring targets for SO2 - South West

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0030	<LAT	0	0	0	0	0

South East

Table 10-45: Existing monitoring and monitoring targets for SO2 - South East

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0031	<LAT	0	0	0	3	-3

Table 10-46: Monitoring stations and site environments for SO2 - South East

Site name	Site environments
Chilbolton Observatory	RB
Lullington Heath	RB
Rochester Stoke	RB

East Midlands

Table 10-47: Existing monitoring and monitoring targets for SO2 - East Midlands

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0032	<LAT	0	0	0	1	-1

Table 10-48: Monitoring stations and site environments for SO2 - East Midlands

Site name	Site environments
Ladybower	RB

North West and Merseyside

Table 10-49: Existing monitoring and monitoring targets for SO2 - North West and Merseyside

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0033	<LAT	0	0	0	0	0

Yorkshire and Humberside

Table 10-50: Existing monitoring and monitoring targets for SO2 - Yorkshire and Humberside

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0034	<LAT	0	0	1	1	-2

Table 10-51: Monitoring stations and site environments for SO2 - Yorkshire and Humberside

Site name	Site environments
Barnsley Gawber	UB
Scunthorpe Town	UI

West Midlands

Table 10-52: Existing monitoring and monitoring targets for SO2 - West Midlands

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0035	<LAT	0	0	0	0	0

North East

Table 10-53: Existing monitoring and monitoring targets for SO2 - North East

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0036	<LAT	0	0	0	0	0

Central Scotland

Table 10-54: Existing monitoring and monitoring targets for SO2 - Central Scotland

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0037	<LAT	0	0	0	1	-1

Table 10-55: Monitoring stations and site environments for SO2 - Central Scotland

Site name	Site environments
Grangemouth	UI

North East Scotland

Table 10-56: Existing monitoring and monitoring targets for SO2 - North East Scotland

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0038	<LAT	0	0	0	0	0

Highland

Table 10-57: Existing monitoring and monitoring targets for SO2 - Highland

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0039	<LAT	0	0	0	0	0

Scottish Borders

Table 10-58: Existing monitoring and monitoring targets for SO2 - Scottish Borders

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0040	<LAT	0	0	0	0	0

South Wales

Table 10-59: Existing monitoring and monitoring targets for SO2 - South Wales

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0041	<LAT	0	0	0	1	-1

Table 10-60: Monitoring stations and site environments for SO2 - South Wales

Site name	Site environments
Narberth	RB

North Wales

Table 10-61: Existing monitoring and monitoring targets for SO2 - North Wales

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0042	<LAT	0	1	0	0	-1

Table 10-62: Monitoring stations and site environments for SO2 - North Wales

Site name	Site environments
Wrexham	UT

Northern Ireland

Table 10-63: Existing monitoring and monitoring targets for SO2 - Northern Ireland

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0043	<LAT	0	0	2	0	-2

Table 10-64: Monitoring stations and site environments for SO2 - Northern Ireland

Site name	Site environments
Ballymena Ballykeel	UB

Ozone monitoring station targets

Greater London Urban Area

Table 11-1: Existing monitoring and monitoring targets for ozone - Greater London Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0001	>LTO	5	1	6	1	-3

Table 11-2: Monitoring stations and site environments for ozone - Greater London Urban Area

Site name	Site environments
London Bloomsbury	UB
London Haringey Priory Park South	UB
London Harlington	UI
London Hillingdon	UB
London Honor Oak Park	UB
London Marylebone Road	UT
London N. Kensington	UB
London Westminster	UB

West Midlands Urban Area

Table 11-3 Existing monitoring and monitoring targets for ozone - West Midlands Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0002	>LTO	2	1	4	0	-3

Table 11-4: Monitoring stations and site environments for ozone - West Midlands Urban Area

Site name	Site environments
Birmingham A4540 Roadside	UT
Birmingham Hall Green	UB
Birmingham Ladywood	UB
Walsall Woodlands	UB
West Bromwich Kenrick Park	UB

Greater Manchester Urban Area

Table 11-5: Existing monitoring and monitoring targets for ozone - Greater Manchester Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0003	>LTO	2	0	2	1	-1

Table 11-6: Monitoring stations and site environments for ozone - Greater Manchester Urban Area

Site name	Site environments
Manchester Piccadilly	UB
Manchester Sharston	SI
Salford Eccles	UB

West Yorkshire Urban Area

Table 11-7: Existing monitoring and monitoring targets for ozone - West Yorkshire Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0004	>LTO	1	0	2	0	-1

Table 11-8: Monitoring stations and site environments for ozone - West Yorkshire Urban Area

Site name	Site environments
Dewsbury Ashworth Grange	UB
Leeds Centre	UB

 Tyneside

Table 11-9: Existing monitoring and monitoring targets for ozone - Tyneside

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0005	>LTO	1	0	1	0	0

Table 11-10: Monitoring stations and site environments for ozone - Tyneside

Station name	Station type
Newcastle Centre	UB

Liverpool Urban Area

Table 11-11: Existing monitoring and monitoring targets for ozone - Liverpool Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0006	>LTO	1	0	0	1	0

Table 11-12: Monitoring stations and site environments for ozone - Liverpool Urban Area

Site name	Site environments
Liverpool Speke	UI

Sheffield Urban Area

Table 11-13: Existing monitoring and monitoring targets for ozone - Sheffield Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0007	>LTO	1	0	2	0	-1

Table 11-14: Monitoring stations and site environments for ozone - Sheffield Urban Area

Station name	Station type
Sheffield Devonshire Green	UB
Sheffield Tinsley	UB

Nottingham Urban Area

Table 11-15: Existing monitoring and monitoring targets for ozone - Nottingham Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0008	>LTO	1	0	1	0	0

Table 11-16: Monitoring stations and site environments for ozone - Nottingham Urban Area

Site name	Site environments
Nottingham Kenmore Gardens	UB

Bristol Urban Area

Table 11-17: Existing monitoring and monitoring targets for ozone - Bristol Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0009	>LTO	1	0	1	0	0

Table 11-18: Monitoring stations and site environments for ozone - Bristol Urban Area

Site name	Site environments
Bristol St Paul’s	UB

Brighton/Worthing/Littlehampton

Table 11-19: Existing monitoring and monitoring targets for ozone - Brighton/Worthing/Littlehampton

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0010	>LTO	1	0	1	0	0

Table 11-20: Monitoring stations and site environments for ozone - Brighton/Worthing/Littlehampton

Site name	Site environments
Brighton Preston Park	UB

Leicester Urban Area

Table 11-21: Existing monitoring and monitoring targets for ozone - Leicester Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0011	>LTO	1	0	1	0	0

Table 11-22: Monitoring stations and site environments for ozone - Leicester Urban Area

Site name	Site environments
Leicester University	UB

Portsmouth Urban Area

Table 11-21: Existing monitoring and monitoring targets for ozone - Portsmouth Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0012	>LTO	1	0	1	0	0

Table 11-22: Monitoring stations and site environments for ozone - Portsmouth Urban Area

Site name	Site environments
Portsmouth	UB

Teesside

Table 11-23: Existing monitoring and monitoring targets for ozone - Teesside Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0013	>LTO	1	0	1	0	0

Table 11-24: Monitoring stations and site environments for ozone - Teesside Urban Area

Site name	Site environments
Middlesbrough	UB

The Potteries

Table 11-25: Existing monitoring and monitoring targets for ozone - The Potteries

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0014	>LTO	1	0	1	0	0

Table 11-26: Monitoring stations and site environments for ozone – The Potteries

Site name	Site environments
Stoke-on-Trent Centre	UB

Bournemouth Urban Area

Table 11-27: Existing monitoring and monitoring targets for ozone - Bournemouth Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0015	>LTO	1	0	1	0	0

Table 11-28: Monitoring stations and site environments for ozone – Bournemouth Urban Area

Site name	Site environments
Bournemouth	UB

Reading/Wokingham Urban Area

Table 11-29: Existing monitoring and monitoring targets for ozone - Reading/Wokingham Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0016	>LTO	1	0	1	0	0

Table 11-30: Monitoring stations and site environments for ozone – Reading/Wokingham Urban Area

Site name	Site environments
Reading New Town	UB

Coventry/Bedworth

Table 11-31: Existing monitoring and monitoring targets for ozone - Coventry/Bedworth

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0017	>LTO	1	0	1	0	0

Table 11-32: Monitoring stations and site environments for ozone – Coventry/Bedworth

Site name	Site environments
Coventry Allesley	UB

Kingston upon Hull

Table 11-33: Existing monitoring and monitoring targets for ozone - Kingston upon Hull

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0018	>LTO	1	0	1	0	0

Table 11-34: Monitoring stations and site environments for ozone - Kingston upon Hull

Site name	Site environments
Hull Freetown	UB

Southampton Urban Area

Table 11-35: Existing monitoring and monitoring targets for ozone - Southampton Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0019	>LTO	1	0	1	0	0

Table 11-36: Monitoring stations and site environments for ozone - Southampton Urban Area

Site name	Site environments
Southampton Centre	UB

Birkenhead Urban Area

Table 11-37: Existing monitoring and monitoring targets for ozone - Birkenhead Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0020	>LTO	1	0	1	0	0

Table 11-38: Monitoring stations and site environments for ozone – Birkenhead Urban Area

Site name	Site environments
Wirral Tranmere	UB

Southend Urban Area

Table 11-39: Existing monitoring and monitoring targets for ozone - Southend Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0021	>LTO	1	0	1	0	0

Table 11-40: Monitoring stations and site environments for ozone – Southend Urban Area

Site name	Site environments
Southend-on-Sea	UB

Blackpool Urban Area

Table 11-41: Existing monitoring and monitoring targets for ozone - Blackpool Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0022	>LTO	1	0	1	0	0

Table 11-42: Monitoring stations and site environments for ozone – Blackpool Urban Area

Site name	Site environments
Blackpool Marton	UB

Preston Urban Area

Table 11-43: Existing monitoring and monitoring targets for ozone - Preston Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0023	>LTO	1	0	1	0	0

Table 11-44: Monitoring stations and site environments for ozone – Preston Urban Area

Site name	Site environments
Preston	UB

Glasgow Urban Area

Table 11-45: Existing monitoring and monitoring targets for ozone - Glasgow Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0024	>LTO	1	0	1	0	0

Table 11-46: Monitoring stations and site environments for ozone – Glasgow Urban Area

Site name	Site environments
Glasgow Townhead	UB

Edinburgh Urban Area

Table 11-47: Existing monitoring and monitoring targets for ozone - Edinburgh Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0025	<LTO	0	0	1	0	-1

Table 11-48: Monitoring stations and site environments for ozone - Edinburgh Urban Area

Site name	Site environments
Edinburgh St Leonards	UB

Cardiff Urban Area

Table 11-49: Existing monitoring and monitoring targets for ozone - Cardiff Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0026	>LTO	1	0	1	0	0

Table 11-50: Monitoring stations and site environments for ozone - Cardiff Urban Area

Site name	Site environments
Cardiff Centre	UB

Swansea Urban Area

Table 11-51: Existing monitoring and monitoring targets for ozone - Swansea Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0027	>LTO	1	0	0	1	0

Table 11-52: Monitoring stations and site environments for ozone - Swansea Urban Area

Site name	Site environments
Port Talbot Margam	UI

Belfast Urban Area

Table 11-53: Existing monitoring and monitoring targets for ozone - Belfast Urban Area

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0028	>LTO	1	0	1	0	0

Table 11-54: Monitoring stations and site environments for ozone - Belfast Urban Area

Site name	Site environments
Belfast Centre	UB

Eastern

Table 11-55: Existing monitoring and monitoring targets for ozone - Eastern

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0029	>LTO	3	0	2	4	-3

Table 11-56: Monitoring stations and site environments for ozone - Eastern

Site name	Site environments
Norwich Lakenfields	UB
Sibton	RB
St Osyth	RB
Thurrock	UB
Weybourne	RB
Wicken Fen	RB

South West

Table 11-57: Existing monitoring and monitoring targets for ozone - South West

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0030	>LTO	3	1	3	2	-3

Table 11-58: Monitoring stations and site environments for ozone - South West

Site name	Site environments
Charlton Mackrell	RB
Exeter Roadside	UT
Honiton	UB
Plymouth Centre	UB
Swindon Walcot	UB
Yarner Wood	RB

South East

Table 11-59: Existing monitoring and monitoring targets for ozone - South East

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0031	>LTO	4	0	4	3	-3

Table 11-60: Monitoring stations and site environments for ozone - South East

Site name	Site environments
Chilbolton Observatory	RB
Eastbourne	UB
Lullington Heath	RB
Milton Keynes Civic Centre	UB
Oxford St Ebbes	UB
Rochester Stoke	RB
South East UB - Canterbury replacement	UB

East Midlands

Table 11-61: Existing monitoring and monitoring targets for ozone - East Midlands

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0032	>LTO	2	0	3	3	-4

Table 11-62: Monitoring stations and site environments for ozone - East Midlands

Site name	Site environments
Chesterfield Loundsley Green	UB
Derby Stockbrook Park	UB
Ladybower	RB
Northampton Spring Park	UB
Tallington	RB
Toft Newton	RB

North West and Merseyside

Table 11-63: Existing monitoring and monitoring targets for ozone - North West and Merseyside

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0033	>LTO	2	0	3	1	-2

Table 11-64: Monitoring stations and site environments for ozone – North West and Merseyside

Site name	Site environments
Blackburn Audley Park	UB
Crewe Coppenhall	UB
Glazebury	RB
Wigan Centre	UB

Yorkshire and Humberside

Table 11-65: Existing monitoring and monitoring targets for ozone - Yorkshire and Humberside

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0034	>LTO	2	0	3	1	-2

Table 11-66: Monitoring stations and site environments for ozone - Yorkshire and Humberside

Site name	Site environments
Barnsley Gawber	UB
High Muffles	RB
Immingham Woodlands Avenue	UB
York Bootham	UB

West Midlands

Table 11-67: Existing monitoring and monitoring targets for ozone - West Midlands

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0035	>LTO	2	0	3	2	-3

Table 11-68: Monitoring stations and site environments for ozone - West Midlands

Site name	Site environments
Burton-on-Trent Horninglow	UB
Leamington Spa	UB
Leominster	SB
Telford Hollinswood	UB
Shropshire Marches Mosses	RB

North East

Table 11-69: Existing monitoring and monitoring targets for ozone - North East

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0036	>LTO	1	0	2	1	-2

Table 11-70: Monitoring stations and site environments for ozone – North East

Site name	Site environments
Hartlepool St Abbs Walk	UB
Kielder Water	RB
Sunderland Silksworth	UB

Central Scotland

Table 11-71: Existing monitoring and monitoring targets for ozone - Central Scotland

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0037	>LTO	2	0	0	2	0

Table 11-72: Monitoring stations and site environments for ozone - Central Scotland

Site name	Site environments
Auchencorth Moss	RB
Bush Estate	RB

North East Scotland

Table 11-73: Existing monitoring and monitoring targets for ozone - North East Scotland

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0038	>LTO	1	0	1	0	0

Table 11-74: Monitoring stations and site environments for ozone – North East Scotland

Site name	Site environments
Aberdeen Erroll Park	UB

Highland

Table 11-75: Existing monitoring and monitoring targets for ozone - Highland

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0039	>LTO	1	0	0	3	-2

Table 11-76: Monitoring stations and site environments for ozone - Highland

Site name	Site environments
Fort William	SB
Lerwick	RB
Strathvaich	RB

Scottish Borders

Table 11-77: Existing monitoring and monitoring targets for ozone - Scottish Borders

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0040	>LTO	1	0	1	1	-1

Table 11-78: Monitoring stations and site environments for SO2 – Scottish Borders

Site name	Site environments
Eskdalemuir	RB
Peebles	UB

South Wales

Table 11-79: Existing monitoring and monitoring targets for ozone - South Wales

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0041	>LTO	1	0	1	1	-1

Table 11-80: Monitoring stations and site environments for ozone - South Wales

Site name	Site environments
Cwmbran Crownbridge	UB
Narberth	RB

North Wales

Table 11-81: Existing monitoring and monitoring targets for ozone - North Wales

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0042	>LTO	1	0	0	1	0

Table 11-82: Monitoring stations and site environments for ozone - North Wales

Site name	Site environments
Aston Hill	RB

Northern Ireland

Table 11-83: Existing monitoring and monitoring targets for ozone - Northern Ireland

Zone code	AT status	Target monitoring	UT	UB	Other	Number to target (diffuse)
UK0043	>LTO	1	0	1	1	-1

Table 11-84: Monitoring stations and site environments for ozone - Northern Ireland

Site name	Site environments
Derry Rosemount	UB
Lough Navar	RB

Benzene monitoring station targets

Greater London Urban Area

Table 12-1: Existing monitoring and monitoring targets for Benzene - Greater London Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0001	<LAT	0	0	0	3	1	0	-4	No change required	No change required

Table 12-2: Monitoring stations and site environments for Benzene - Greater London Urban Area

Site name	Site environments
Haringey Roadside	UT
London Bloomsbury	UB
London Marylebone Road	UT
Tower Hamlets Roadside	UT

West Midlands Urban Area

Table 12-3 Existing monitoring and monitoring targets for Benzene - West Midlands Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0002	<LAT	0	0	0	1	1	0	-2	No change required	No change required

Table 12-4: Monitoring stations and site environments for Benzene - West Midlands Urban Area

Site name	Site environments
Birmingham A4540 Roadside	UT
Birmingham Ladywood	UB

Greater Manchester Urban Area

Table 12-5: Existing monitoring and monitoring targets for Benzene - Greater Manchester Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0003	<LAT	0	0	0	1	1	0	-2	No change required	No change required

Table 12-6: Monitoring stations and site environments for Benzene - Greater Manchester Urban Area

Site name	Site environments
Bury Whitefield Roadside	UT
Manchester Piccadilly	UB

West Yorkshire Urban Area

Table 12-7: Existing monitoring and monitoring targets for Benzene - West Yorkshire Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0004	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 12-8: Monitoring stations and site environments for Benzene - West Yorkshire Urban Area

Site name	Site environments
Leeds Centre	UB

 Tyneside

Table 12-9: Existing monitoring and monitoring targets for Benzene - Tyneside

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0005	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 12-10: Monitoring stations and site environments for Benzene - Tyneside

Site name	Site environments
Newcastle Centre	UB

Liverpool Urban Area

Table 12-11: Existing monitoring and monitoring targets for Benzene - Liverpool Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0006	<LAT	0	0	0	0	0	1	-1	No change required	No change required

Table 12-12: Monitoring stations and site environments for Benzene - Liverpool Urban Area

Site name	Site environments
Liverpool Speke	UI

Sheffield Urban Area

Table 12-13: Existing monitoring and monitoring targets for Benzene - Sheffield Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0007	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 12-14: Monitoring stations and site environments for Benzene - Sheffield Urban Area

Site name	Site environments
Sheffield Devonshire Green	UB

Nottingham Urban Area

Table 12-15: Existing monitoring and monitoring targets for Benzene - Nottingham Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0008	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 12-16: Monitoring stations and site environments for Benzene - Nottingham Urban Area

Site name	Site environments
Nottingham Kenmore Gardens	UB

Bristol Urban Area

Table 12-17: Existing monitoring and monitoring targets for Benzene - Bristol Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0009	<LAT	0	0	0	0	0	0	0	No change required	No change required

Brighton/Worthing/Littlehampton

Table 12-18: Existing monitoring and monitoring targets for Benzene - Brighton/Worthing/Littlehampton

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0010	<LAT	0	0	0	0	0	0	0	No change required	No change required

Leicester Urban Area

Table 12-19: Existing monitoring and monitoring targets for Benzene - Leicester Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0011	<LAT	0	0	0	0	0	0	0	No change required	No change required

Portsmouth Urban Area

Table 12-20: Existing monitoring and monitoring targets for Benzene - Portsmouth Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0012	<LAT	0	0	0	0	0	0	0	No change required	No change required

Teesside

Table 12-21: Existing monitoring and monitoring targets for Benzene - Teesside Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0013	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 12-22: Monitoring stations and site environments for Benzene - Teesside Urban Area

Site name	Site environments
Middlesbrough	UB

The Potteries

Table 12-23: Existing monitoring and monitoring targets for Benzene - The Potteries

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0014	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 12-24: Monitoring stations and site environments for Benzene - The Potteries

Site name	Site environments
Stoke-on-Trent Centre	UB

Bournemouth Urban Area

Table 12-25: Existing monitoring and monitoring targets for Benzene - Bournemouth Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0015	<LAT	0	0	0	0	0	0	0	No change required	No change required

Reading/Wokingham Urban Area

Table 12-26: Existing monitoring and monitoring targets for Benzene - Reading/Wokingham Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0016	<LAT	0	0	0	0	0	0	0	No change required	No change required

Coventry/Bedworth

Table 12-27: Existing monitoring and monitoring targets for Benzene - Coventry/Bedworth

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0017	<LAT	0	0	0	0	0	0	0	No change required	No change required

Kingston upon Hull

Table 12-28: Existing monitoring and monitoring targets for Benzene - Kingston upon Hull

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0018	<LAT	0	0	0	0	0	0	0	No change required	No change required

Southampton Urban Area

Table 12-29: Existing monitoring and monitoring targets for Benzene - Southampton Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0019	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 12-30: Monitoring stations and site environments for Benzene - Southampton Urban Area

Site name	Site environments
Southampton Centre	UB

Birkenhead Urban Area

Table 12-31: Existing monitoring and monitoring targets for Benzene - Birkenhead Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0020	<LAT	0	0	0	0	0	0	0	No change required	No change required

Southend Urban Area

Table 12-32: Existing monitoring and monitoring targets for Benzene - Southend Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0021	<LAT	0	0	0	0	0	0	0	No change required	No change required

Blackpool Urban Area

Table 12-33: Existing monitoring and monitoring targets for Benzene - Blackpool Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0022	<LAT	0	0	0	0	0	0	0	No change required	No change required

Preston Urban Area

Table 12-34: Existing monitoring and monitoring targets for Benzene - Preston Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0023	<LAT	0	0	0	0	0	0	0	No change required	No change required

Glasgow Urban Area

Table 12-35: Existing monitoring and monitoring targets for Benzene - Glasgow Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0024	<LAT	0	0	0	1	0	0	-1	No change required	No change required

Table 12-36: Monitoring stations and site environments for Benzene - Glasgow Urban Area

Site name	Site environments
Glasgow Kerbside	UT

Edinburgh Urban Area

Table 12-37: Existing monitoring and monitoring targets for Benzene - Edinburgh Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0025	<LAT	0	0	0	0	0	0	0	No change required	No change required

Cardiff Urban Area

Table 12-38: Existing monitoring and monitoring targets for Benzene - Cardiff Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0026	<LAT	0	0	0	0	0	0	0	No change required	No change required

Swansea Urban Area

Table 12-39: Existing monitoring and monitoring targets for Benzene - Swansea Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0027	LAT-UAT	1	0	0	0	0	1	0	No change required	No change required

Table 12-40: Monitoring stations and site environments for Benzene - Swansea Urban Area

Site name	Site environments
Port Talbot Margam	UI

Belfast Urban Area

Table 12-41: Existing monitoring and monitoring targets for Benzene - Belfast Urban Area

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0028	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 12-42: Monitoring stations and site environments for Benzene - Belfast Urban Area

Site name	Site environments
Belfast Centre	UB

Eastern

Table 12-43: Existing monitoring and monitoring targets for Benzene - Eastern

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0029	<LAT	0	0	0	1	1	0	-2	No change required	No change required

Table 12-44: Monitoring stations and site environments for Benzene - Eastern

Site name	Site environments
Cambridge Roadside	UT
Norwich Lakenfields	UB

South West

Table 12-45: Existing monitoring and monitoring targets for Benzene - South West

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0030	<LAT	0	0	0	1	0	0	-1	No change required	No change required

Table 12-46: Monitoring stations and site environments for Benzene - South West

Site name	Site environments
Bath A4 Roadside	UT

South East

Table 12-47: Existing monitoring and monitoring targets for Benzene - South East

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0031	<LAT	0	0	0	2	1	1	-4	No change required	No change required

Table 12-48: Monitoring stations and site environments for Benzene - South East

Site name	Site environments
Chatham Roadside	UT
Chilbolton Observatory	RB
Oxford Centre Roadside	UT
Oxford St Ebbes	UB

East Midlands

Table 12-49: Existing monitoring and monitoring targets for Benzene - East Midlands

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0032	<LAT	0	0	0	1	0	0	-1	No change required	No change required

Table 12-50: Monitoring stations and site environments for Benzene - East Midlands

Site name	Site environments
Chesterfield Roadside	UT

North West and Merseyside

Table 12-51: Existing monitoring and monitoring targets for Benzene - North West and Merseyside

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0033	<LAT	0	0	0	1	0	0	-1	No change required	No change required

Table 12-52: Monitoring stations and site environments for Benzene - North West and Merseyside

Site name	Site environments
Carlisle Morton A595	UT

Yorkshire and Humberside

Table 12-53: Existing monitoring and monitoring targets for Benzene - Yorkshire and Humberside

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0034	LAT-UAT	2	0	0	1	2	1	-2	No change required	No change required

Table 12-54: Monitoring stations and site environments for Benzene - Yorkshire and Humberside

Site name	Site environments
Barnsley Gawber	UB
Scunthorpe Town	UI
York Bootham	UB
York Fishergate	UT

West Midlands

Table 12-55: Existing monitoring and monitoring targets for Benzene - West Midlands

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0035	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 12-56: Monitoring stations and site environments for Benzene - West Midlands

Site name	Site environments
Leamington Spa	UB

North East

Table 12-57: Existing monitoring and monitoring targets for Benzene - North East

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0036	<LAT	0	0	0	1	0	0	-1	No change required	No change required

Table 12-58: Monitoring stations and site environments for Benzene - North East

Site name	Site environments
Stockton-on-Tees Eaglescliffe	UT

Central Scotland

Table 12-59: Existing monitoring and monitoring targets for Benzene - Central Scotland

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0037	<LAT	0	0	0	0	0	2	-2	No change required	No change required

Table 12-60: Monitoring stations and site environments for Benzene - Central Scotland

Site name	Site environments
Auchencorth Moss	RB
Grangemouth	UI

North East Scotland

Table 12-61: Existing monitoring and monitoring targets for Benzene - North East Scotland

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0038	<LAT	0	0	0	0	0	0	0	No change required	No change required

Highland

Table 12-62: Existing monitoring and monitoring targets for Benzene - Highland

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0039	<LAT	0	0	0	0	0	0	0	No change required	No change required

Scottish Borders

Table 12-63: Existing monitoring and monitoring targets for Benzene - Scottish Borders

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0040	<LAT	0	0	0	0	0	0	0	No change required	No change required

South Wales

Table 12-64: Existing monitoring and monitoring targets for Benzene - South Wales

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0041	<LAT	0	0	0	0	1	0	-1	No change required	No change required

Table 12-65: Monitoring stations and site environments for Benzene - South Wales

Site name	Site environments
Newport	UB

North Wales

Table 12-66: Existing monitoring and monitoring targets for Benzene - North Wales

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0042	<LAT	0	0	0	0	0	0	0	No change required	No change required

Table 12-67: Monitoring stations and site environments for Benzene - North Wales

Northern Ireland

Table 12-68: Existing monitoring and monitoring targets for Benzene - Northern Ireland

Zone code	AT status	Target monitoring	Target UT	Target UB	UT	UB	Other	Number to target (diffuse)	UT target	UB target
UK0043	<LAT	0	0	0	0	0	0	0	No change required	No change required

Metals monitoring station targets

In all tables, the column Target monitoring (any metal) is associated with any zone where concentrations are above the LAT for any metal (because all metals species are analysed as a suite therefore the need for one species also provides for the other species).

Greater London Urban Area

Table 13-1: Existing monitoring and monitoring targets for metals - Greater London Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0001	<LAT	<LAT	<LAT	<LAT	0	0	1	0	1	0	0	-2

Table 13-2: Monitoring stations and site environments for metals - Greater London Urban Area

Site name	Site environments
London Marylebone Road	UT
London Westminster	UB

West Midlands Urban Area

Table 13-3 Existing monitoring and monitoring targets for metals - West Midlands Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0002	<LAT	<LAT	<LAT	<LAT	0	0	1	0	0	0	0	-1

Table 13-4: Monitoring stations and site environments for metals - West Midlands Urban Area

Site name	Site environments
Walsall Pleck Park	UB

Greater Manchester Urban Area

Table 13-5: Existing monitoring and monitoring targets for metals - Greater Manchester Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0003	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

West Yorkshire Urban Area

Table 13-6: Existing monitoring and monitoring targets for metals - West Yorkshire Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0004	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

 Tyneside

Table 13-7: Existing monitoring and monitoring targets for metals - Tyneside

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0005	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Liverpool Urban Area

Table 13-8: Existing monitoring and monitoring targets for metals - Liverpool Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0006	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Sheffield Urban Area

Table 13-9: Existing monitoring and monitoring targets for metals - Sheffield  Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0007	<LAT	<LAT	>UAT	<LAT	1	0	1	1	0	0	0	-1

Table 13-10: Monitoring stations and site environments for metals - Sheffield  Urban Area

Site name	Site environments
Sheffield Devonshire Green	UB

Sheffield Tinsley

UI

Nottingham Urban Area

Table 13-11: Existing monitoring and monitoring targets for metals - Nottingham Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0008	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Bristol Urban Area

Table 13-12: Existing monitoring and monitoring targets for metals - Bristol Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0009	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Brighton/Worthing/Littlehampton

Table 13-13: Existing monitoring and monitoring targets for metals - Brighton/Worthing/Littlehampton

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0010	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Leicester Urban Area

Table 13-14: Existing monitoring and monitoring targets for metals - Leicester Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0011	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Portsmouth Urban Area

Table 13-15: Existing monitoring and monitoring targets for metals - Portsmouth Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0012	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Teesside

Table 13-16: Existing monitoring and monitoring targets for metals - Teesside Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0013	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

The Potteries

Table 13-17: Existing monitoring and monitoring targets for metals - The Potteries

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0014	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Bournemouth Urban Area

Table 13-18: Existing monitoring and monitoring targets for metals - Bournemouth Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0015	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Reading/Wokingham Urban Area

Table 13-19: Existing monitoring and monitoring targets for metals - Reading/Wokingham Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0016	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Coventry/Bedworth

Table 13-20: Existing monitoring and monitoring targets for metals - Coventry/Bedworth

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0017	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Kingston upon Hull

Table 13-21: Existing monitoring and monitoring targets for metals - Kingston upon Hull

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0018	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Southampton Urban Area

Table 13-22: Existing monitoring and monitoring targets for metals - Southampton Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0019	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Birkenhead Urban Area

Table 13-23: Existing monitoring and monitoring targets for metals - Birkenhead Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0020	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Southend Urban Area

Table 13-24: Existing monitoring and monitoring targets for metals - Southend Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0021	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Blackpool Urban Area

Table 13-25: Existing monitoring and monitoring targets for metals - Blackpool Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0022	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Preston Urban Area

Table 13-26: Existing monitoring and monitoring targets for metals - Preston Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0023	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Glasgow Urban Area

Table 13-27: Existing monitoring and monitoring targets for metals - Glasgow Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0024	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Edinburgh Urban Area

Table 13-28: Existing monitoring and monitoring targets for metals - Edinburgh Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0025	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Cardiff Urban Area

Table 13-29: Existing monitoring and monitoring targets for metals - Cardiff Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0026	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Swansea Urban Area

Table 13-30: Existing monitoring and monitoring targets for metals - Swansea Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0027	<LAT	<LAT	>UAT	<LAT	1	0	1	2	1	1	0	-4

Table 13-31: Monitoring stations and site environments for metals - Swansea Urban Area

Site name	Site environments
Pontardawe Brecon Road	SI
Pontardawe Tawe Terrace	UI
Port Talbot Margam	UI
Swansea Coedgwilym	UB
Swansea Morriston	UT

Belfast Urban Area

Table 13-32: Existing monitoring and monitoring targets for metals - Belfast Urban Area

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0028	<LAT	<LAT	<LAT	<LAT	0	0	1	0	0	0	0	-1

Table 13-33: Monitoring stations and site environments for metals - Belfast Urban Area

Site name	Site environments
Belfast Centre	UB

Eastern

Table 13-34: Existing monitoring and monitoring targets for metals - Eastern

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0029	<LAT	<LAT	<LAT	<LAT	0	1	1	0	0	0	0	-2

Table 13-35: Monitoring stations and site environments for metals - Eastern

Site name	Site environments
Chadwell St Mary	UB
Heigham Holmes	RB

South West

Table 13-36: Existing monitoring and monitoring targets for metals - South West

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0030	<LAT	<LAT	<LAT	<LAT	0	1	0	0	0	0	0	-1

Table 13-37: Monitoring stations and site environments for metals – South West

Site name	Site environments
Yarner Wood	RB

South East

Table 13-38: Existing monitoring and monitoring targets for metals - South East

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0031	<LAT	<LAT	<LAT	<LAT	0	2	0	0	0	0	0	-2

Table 13-39: Monitoring stations and site environments for metals – South East

Site name	Site environments
Chilbolton Observatory	RB
Detling	RB

East Midlands

Table 13-40: Existing monitoring and monitoring targets for metals - East Midlands

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0032	LAT-UAT	<LAT	<LAT	<LAT	1	0	1	0	0	0	0	0

Table 13-41: Monitoring stations and site environments for metals – East Midlands

Site name	Site environments
Chesterfield Loundsley Green	UB

North West and Merseyside

Table 13-42: Existing monitoring and monitoring targets for metals - North West and Merseyside

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0033	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Yorkshire and Humberside

Table 13-43: Existing monitoring and monitoring targets for metals - Yorkshire and Humberside

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0034	LAT-UAT	<LAT	>UAT	<LAT	1	0	0	2	0	0	0	-1

Table 13-44: Monitoring stations and site environments for metals - Yorkshire and Humberside

Site name	Site environments
Scunthorpe Low Santon	UI
Scunthorpe Town	UI

West Midlands

Table 13-45: Existing monitoring and monitoring targets for metals - West Midlands

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0035	<LAT	<LAT	<LAT	<LAT	0	1	0	0	0	0	0	-1

Table 13-46: Monitoring stations and site environments for metals - West Midlands

Site name	Site environments
Fenny Compton	RB

North East

Table 13-47: Existing monitoring and monitoring targets for metals - North East

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0036	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Central Scotland

Table 13-48: Existing monitoring and monitoring targets for metals - Central Scotland

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0037	<LAT	<LAT	<LAT	<LAT	0	1	0	0	0	0	0	-1

Table 13-49: Monitoring stations and site environments for metals – Central Scotland

Site name	Site environments
Auchencorth Moss	RB

North East Scotland

Table 13-50: Existing monitoring and monitoring targets for metals - North East Scotland

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0038	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Highland

Table 13-51: Existing monitoring and monitoring targets for metals - Highland

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0039	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Scottish Borders

Table 13-52: Existing monitoring and monitoring targets for metals - Scottish Borders

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0040	<LAT	<LAT	<LAT	<LAT	0	1	0	0	0	0	0	-1

Table 13-53: Monitoring stations and site environments for metals – Scottish Borders

Site name	Site environments
Eskdalemuir	RB

South Wales

Table 13-54: Existing monitoring and monitoring targets for metals - South Wales

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0041	<LAT	<LAT	>UAT	<LAT	1	1	0	0	0	0	0	0

Table 13-55: Monitoring stations and site environments for metals - South Wales

Site name	Site environments
Cwmystwyth	RB

North Wales

Table 13-56: Existing monitoring and monitoring targets for metals - North Wales

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0042	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Northern Ireland

Table 13-57: Existing monitoring and monitoring targets for metals - Northern Ireland

Zone code	As (assessment threshold classification)	Cd (assessment threshold classification)	Ni (assessment threshold classification)	Pb (assessment threshold classification)	Target monitoring (any metal)	Rural Background monitoring	Urban Background monitoring	Urban Industrial monitoring	Urban Traffic monitoring	Suburban Industrial monitoring	Suburban Background monitoring	Number to target (diffuse)
UK0043	<LAT	<LAT	<LAT	<LAT	0	0	0	0	0	0	0	0

Benzo(a)pyrene monitoring station targets

Greater London Urban Area

Table 14-1: Existing monitoring and monitoring targets for Benzo(a)pyrene - Greater London Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0001	<LAT	0	1	1	0	-2

Table 14-2: Monitoring stations and site environments for Benzo(a)pyrene - Greater London Urban Area

Site name	Site environments
London Brent	UB
London Marylebone Road	UT

West Midlands Urban Area

Table 14-3 Existing monitoring and monitoring targets for Benzo(a)pyrene - West Midlands Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0002	<LAT	0	0	1	0	-1

Table 14-4: Monitoring stations and site environments for Benzo(a)pyrene - West Midlands Urban Area

Site name	Site environments
Birmingham Ladywood	UB

Greater Manchester Urban Area

Table 14-5: Existing monitoring and monitoring targets for Benzo(a)pyrene - Greater Manchester Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0003	<LAT	0	0	1	0	-1

Table 14-6: Monitoring stations and site environments for Benzo(a)pyrene - Greater Manchester Urban Area

Site name	Site environments
Salford Eccles	UB

West Yorkshire Urban Area

Table 14-7: Existing monitoring and monitoring targets for Benzo(a)pyrene - West Yorkshire Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0004	<LAT	0	0	1	0	-1

Table 14-8: Monitoring stations and site environments for Benzo(a)pyrene - West Yorkshire Urban Area

Site name	Site environments
Leeds Millshaw	UB

 Tyneside

Table 14-9: Existing monitoring and monitoring targets for Benzo(a)pyrene - Tyneside

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0005	<LAT	0	0	1	0	-1

Table 14-10: Monitoring stations and site environments for Benzo(a)pyrene - Tyneside

Site name	Site environments
Newcastle Centre	UB

Liverpool Urban Area

Table 14-11: Existing monitoring and monitoring targets for Benzo(a)pyrene - Liverpool Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0006	LAT-UAT	1	0	1	0	0

Table 14-12: Monitoring stations and site environments for Benzo(a)pyrene - Liverpool Urban Area

Site name	Site environments
Liverpool Speke	UB

Sheffield  Urban Area

Table 14-13: Existing monitoring and monitoring targets for Benzo(a)pyrene - Sheffield  Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0007	<LAT	0	0	1	0	-1

Table 14-14: Monitoring stations and site environments for Benzo(a)pyrene - Sheffield Urban Area

Site name	Site environments
Sheffield Tinsley	UB

Nottingham Urban Area

Table 14-15: Existing monitoring and monitoring targets for Benzo(a)pyrene - Nottingham  Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0008	<LAT	0	0	1	0	-1

Table 14-16: Monitoring stations and site environments for Benzo(a)pyrene - Nottingham Urban Area

Site name	Site environments
Nottingham Kenmore Gardens	UB

Bristol Urban Area

Table 14-17: Existing monitoring and monitoring targets for Benzo(a)pyrene - Bristol  Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0009	<LAT	0	0	1	0	-1

Table 14-18: Monitoring stations and site environments for Benzo(a)pyrene - Bristol Urban Area

Site name	Site environments
Bristol St Paul’s	UB

Brighton/Worthing/Littlehampton

Table 14-19: Existing monitoring and monitoring targets for Benzo(a)pyrene - Brighton/Worthing/Littlehampton

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0010	<LAT	0	0	0	0	0

Leicester Urban Area

Table 14-20: Existing monitoring and monitoring targets for Benzo(a)pyrene - Leicester Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0011	<LAT	0	0	0	0	0

Portsmouth Urban Area

Table 14-21: Existing monitoring and monitoring targets for Benzo(a)pyrene - Portsmouth Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0012	<LAT	0	0	1	0	-1

Table 14-22: Monitoring stations and site environments for Benzo(a)pyrene - Portsmouth Urban Area

Site name	Site environments
Portsmouth	UB

Teesside

Table 14-23: Existing monitoring and monitoring targets for Benzo(a)pyrene - Teesside Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0013	<LAT	0	0	1	0	-1

Table 14-24: Monitoring stations and site environments for Benzo(a)pyrene - Teesside Urban Area

Site name	Site environments
Middlesbrough	UB

The Potteries

Table 14-25: Existing monitoring and monitoring targets for Benzo(a)pyrene - The Potteries

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0014	<LAT	0	0	0	0	0

Bournemouth Urban Area

Table 14-26: Existing monitoring and monitoring targets for Benzo(a)pyrene - Bournemouth Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0015	<LAT	0	0	0	0	0

Reading/Wokingham Urban Area

Table 14-27: Existing monitoring and monitoring targets for Benzo(a)pyrene - Reading/Wokingham Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0016	<LAT	0	0	0	0	0

Coventry/Bedworth

Table 14-28: Existing monitoring and monitoring targets for Benzo(a)pyrene - Coventry/Bedworth

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0017	<LAT	0	0	0	0	0

Kingston upon Hull

Table 14-29: Existing monitoring and monitoring targets for Benzo(a)pyrene - Kingston upon Hull

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0018	<LAT	0	0	0	0	0

Southampton Urban Area

Table 14-30: Existing monitoring and monitoring targets for Benzo(a)pyrene - Southampton Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0019	<LAT	0	0	1	0	-1

Table 14-31: Monitoring stations and site environments for Benzo(a)pyrene - Southampton Urban Area

Site name	Site environments
Southampton Centre	UB

Birkenhead Urban Area

Table 14-32: Existing monitoring and monitoring targets for Benzo(a)pyrene - Birkenhead Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0020	<LAT	0	0	0	0	0

Southend Urban Area

Table 14-33: Existing monitoring and monitoring targets for Benzo(a)pyrene - Southend Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0021	<LAT	0	0	0	0	0

Blackpool Urban Area

Table 14-34: Existing monitoring and monitoring targets for Benzo(a)pyrene - Blackpool Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0022	<LAT	0	0	0	0	0

Preston Urban Area

Table 14-35: Existing monitoring and monitoring targets for Benzo(a)pyrene - Preston Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0023	<LAT	0	0	1	0	-1

Table 14-36: Monitoring stations and site environments for Benzo(a)pyrene - Preston Urban Area

Site name	Site environments
Preston	UB

Glasgow Urban Area

Table 14-37: Existing monitoring and monitoring targets for Benzo(a)pyrene - Glasgow Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0024	<LAT	0	0	1	0	-1

Table 14-38: Monitoring stations and site environments for Benzo(a)pyrene - Glasgow Urban Area

Site name	Site environments
Glasgow Townhead	UB

Edinburgh Urban Area

Table 14-39: Existing monitoring and monitoring targets for Benzo(a)pyrene - Edinburgh Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0025	<LAT	0	0	1	0	-1

Table 14-40: Monitoring stations and site environments for Benzo(a)pyrene - Edinburgh Urban Area

Site name	Site environments
Edinburgh St Leonards	UB

Cardiff Urban Area

Table 14-41: Existing monitoring and monitoring targets for Benzo(a)pyrene - Cardiff Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0026	<LAT	0	0	1	0	-1

Table 14-42: Monitoring stations and site environments for Benzo(a)pyrene - Cardiff Urban Area

Site name	Site environments
Cardiff Lakeside	UB

Swansea Urban Area

Table 14-43: Existing monitoring and monitoring targets for Benzo(a)pyrene - Swansea Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0027	>UAT	1	0	1	2	-2

Table 14-44: Monitoring stations and site environments for Benzo(a)pyrene - Swansea Urban Area

Site name	Site environments
Margam Youth Centre	UI
Port Talbot Margam	UI
Swansea Cwm Level Park	UB

Belfast Urban Area

Table 14-45: Existing monitoring and monitoring targets for Benzo(a)pyrene - Belfast Urban Area

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0028	LAT-UAT	1	0	1	0	0

Table 14-46: Monitoring stations and site environments for Benzo(a)pyrene - Belfast Urban Area

Site name	Site environments
Kilmakee Leisure Centre	UB

Eastern

Table 14-47: Existing monitoring and monitoring targets for Benzo(a)pyrene - Eastern

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0029	<LAT	0	0	0	1	-1

Table 14-48: Monitoring stations and site environments for Benzo(a)pyrene - Eastern

Site name	Site environments
Stoke Ferry	RB

South West

Table 14-49: Existing monitoring and monitoring targets for Benzo(a)pyrene - South West

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0030	<LAT	0	0	1	0	-1

Table 14-50: Monitoring stations and site environments for Benzo(a)pyrene - South West

Site name	Site environments
Plymouth Centre	UB

South East

Table 14-51: Existing monitoring and monitoring targets for Benzo(a)pyrene - South East

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0031	<LAT	0	0	0	1	-1

Table 14-52: Monitoring stations and site environments for Benzo(a)pyrene - South East

Site name	Site environments
Chilbolton Observatory	RB

East Midlands

Table 14-53: Existing monitoring and monitoring targets for Benzo(a)pyrene - East Midlands

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0032	<LAT	0	0	1	0	-1

Table 14-54: Monitoring stations and site environments for Benzo(a)pyrene - East Midlands

Site name	Site environments
Bolsover	UB

North West and Merseyside

Table 14-55: Existing monitoring and monitoring targets for Benzo(a)pyrene - North West and Merseyside

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0033	<LAT	0	0	0	1	-1

Table 14-56: Monitoring stations and site environments for Benzo(a)pyrene - North West and Merseyside

Site name	Site environments
Hazelrigg	RB

Yorkshire and Humberside

Table 14-57: Existing monitoring and monitoring targets for Benzo(a)pyrene - Yorkshire and Humberside

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0034	>UAT	1	0	1	3	-3

Table 14-58: Monitoring stations and site environments for Benzo(a)pyrene - Yorkshire and Humberside

Site name	Site environments
High Muffles	RB
Royston	UB
Scunthorpe Low Santon	UI
ScunthorpeTown	UI

West Midlands

Table 14-59: Existing monitoring and monitoring targets for Benzo(a)pyrene - West Midlands

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0035	<LAT	0	0	0	0	0

North East

Table 14-60: Existing monitoring and monitoring targets for Benzo(a)pyrene - North East

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0036	<LAT	0	0	0	0	0

Central Scotland

Table 14-61: Existing monitoring and monitoring targets for Benzo(a)pyrene - Central Scotland

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0037	<LAT	0	0	0	1	-1

Table 14-62: Monitoring stations and site environments for Benzo(a)pyrene - Central Scotland

Site name	Site environments
Auchencorth Moss	RB

North East Scotland

Table 14-63: Existing monitoring and monitoring targets for Benzo(a)pyrene - North East Scotland

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0038	<LAT	0	0	0	0	0

Highland

Table 14-64: Existing monitoring and monitoring targets for Benzo(a)pyrene - Highland

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0039	<LAT	0	0	1	0	-1

Table 14-65: Monitoring stations and site environments for Benzo(a)pyrene - Highland

Site name	Site environments
Kinlochleven	UB

Scottish Borders

Table 14-66: Existing monitoring and monitoring targets for Benzo(a)pyrene - Scottish Borders

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0040	<LAT	0	0	0	0	0

South Wales

Table 14-67: Existing monitoring and monitoring targets for Benzo(a)pyrene - South Wales

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0041	>UAT	1	0	1	0	0

Table 14-68: Monitoring stations and site environments for Benzo(a)pyrene - South Wales

Site name	Site environments
Newport	UB

North Wales

Table 14-69: Existing monitoring and monitoring targets for Benzo(a)pyrene - North Wales

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0042	<LAT	0	0	0	0	0

Northern Ireland

Table 14-70: Existing monitoring and monitoring targets for Benzo(a)pyrene - Northern Ireland

Zone code	AT status	Required monitoring	UT	UB	Other	Number to target (diffuse)
UK0043	>UAT	1	1	2	0	-2

Table 14-71: Monitoring stations and site environments for Benzo(a)pyrene - Northern Ireland

Site name	Site environments
Armagh Roadside	UT
Ballymena	UB
Derry Brandywell	UB

PM2.5 environmental targets (England) monitoring station targets

Greater London Urban Area

Table 15-1: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Greater London Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0001	15	5	10	5	10	0	0	No change required	No change required

Table 15-2: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Greater London Urban Area

Station name	Station type
Camden Kerbside	UT
London Bexley*	SB
London Bloomsbury*	UB
London Harlington	UI
London Hillingdon	UB
London Honor Oak Park*	UB
London Marylebone Road	UT
London N. Kensington*	UB
London Teddington Bushy Park*	UB
London Westminster*	UB
Planned site	UT
Planned site	UT
Planned site	UB
Planned site	UB
Planned site	UB

West Midlands Urban Area

Table 15-3 Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - West Midlands Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0002	6	2	4	2	4	0	0	No change required	No change required

Table 15-4: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - West Midlands Urban Area

Station name	Station type
Birmingham A4540 Roadside	UT
Birmingham Hall Green	UB
Birmingham Ladywood*	UB
Planned Urban Traffic site	UT
Planned site	UB
Planned site	UB

Greater Manchester Urban Area

Table 15-5: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Greater Manchester Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0003	6	2	4	2	4	0	0	No change required	No change required

Table 15-6: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Greater Manchester Urban Area

Station name	Station type
Manchester Piccadilly*	UB
Manchester Sharston	SI
Salford Eccles	UB
Planned site	UB
Planned site	UB
Planned Site	UT

West Yorkshire Urban Area

Table 15-7: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - West Yorkshire Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0004	6	2	4	2	4	0	0	No change required	No change required

Table 15-8: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - West Yorkshire Urban Area

Station name	Station type
Dewsbury Ashworth Grange	UB
Leeds Centre*	UB
Leeds Headingley Kerbside	UT
Planned site	UT
Planned site	UB
Planned site	UB

 Tyneside

Table 15-9: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Tyneside

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0005	3	1	2	1	2	0	0	No change required	No change required

Table 15-10: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Tyneside

Station name	Station type
Newcastle Centre*	UB
Newcastle Cradlewell Roadside	UT
Planned site	UB

Liverpool Urban Area

Table 15-11: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Liverpool Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0006	3	1	2	2	2	0	-1	No change required	No change required

Table 15-12: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Liverpool Urban Area

Station name	Station type
Liverpool Speke	UI
Planned site	UB
Planned site	UT
Planned site	UB

Sheffield  Urban Area

Table 15-13: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Sheffield  Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0007	3	1	2	1	3	0	-1	No change required	No change required

Table 15-14: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Sheffield Urban Area

Station name	Station type
Rotherham East Dene	UB
Sheffield Barnsley Road	UT
Sheffield Devonshire Green*	UB
Sheffield Tinsley	UB

Nottingham Urban Area

Table 15-15: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Nottingham  Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0008	3	1	2	1	2	0	0	No change required	No change required

Table 15-16: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Nottingham Urban Area

Station name	Station type
Nottingham Kenmore Gardens	UB
Nottingham Western Boulevard	UT
Planned site	UB

Bristol Urban Area

Table 15-17: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Bristol Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0009	3	1	2	1	2	0	0	No change required	No change required

Table 15-18: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Bristol Urban Area

Station name	Station type	Size fraction
Bristol St Paul’s*	UB
Bristol Temple Way	UT
Planned site	UB

Brighton/Worthing/Littlehampton

Table 15-19: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Brighton/Worthing/Littlehampton

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0010	3	1	2	1	2	0	0	No change required	No change required

Table 15-20: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Brighton/Worthing/Littlehampton

Station name	Station type
Brighton Preston Park*	UB
Worthing A27 Roadside	UT
Worthing East Ten Acres	UB

Leicester Urban Area

Table 15-21: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Leicester Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0011	3	1	2	1	2	0	0	No change required	No change required

Table 15-22: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Leicester Urban Area

Station name	Station type
Leicester A594 Roadside	UT
Leicester University*	UB
Planned site	UB

Portsmouth Urban Area

Table 15-23: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Portsmouth Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0012	3	1	2	1	2	0	0	No change required	No change required

Table 15-24: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Portsmouth Urban Area

Station name	Station type
Portsmouth*	UB
Portsmouth Anglesea Road	UT
Planned site	UB

Teesside

Table 15-25: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Teesside Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0013	3	1	2	1	2	0	0	No change required	No change required

Table 15-26: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Teesside Urban Area

Station name	Station type
Middlesbrough	UB
Stockton-on-Tees A1305 Roadside	UT
Planned site	UB

The Potteries

Table 15-27: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - The Potteries

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0014	3	1	2	1	2	0	0	No change required	No change required

Table 15-28: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - The Potteries

Station name	Station type
Stoke-on-Trent A50 Roadside	UT
Stoke-on-Trent Centre*	UB
Planned site	UB

Bournemouth Urban Area

Table 15-29: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Bournemouth Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0015	3	1	2	1	2	0	0	No change required	No change required

Table 15-30: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Bournemouth Urban Area

Station name	Station type
Bournemouth*	UB
Christchurch Barrack Road	UT
Planned site	UB

Reading/Wokingham Urban Area

Table 15-31: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Reading/Wokingham Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0016	3	1	2	1	2	0	0	No change required	No change required

Table 15-32: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Reading/Wokingham Urban Area

Station name	Station type
Reading New Town*	UB
Reading Rose Kiln Lane	UT
Planned site	UB

Coventry/Bedworth

Table 15-33: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Coventry/Bedworth

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0017	3	1	2	1	2	0	0	No change required	No change required

Table 15-34: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Coventry/Bedworth

Station name	Station type
Coventry Allesley*	UB
Coventry Binley Road	UT
Planned site	UB

Kingston upon Hull

Table 15-35: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Kingston upon Hull

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0018	3	1	2	1	2	0	0	No change required	No change required

Table 15-36: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Kingston upon Hull

Station name	Station type
Hull Freetown*	UB
Hull Holderness Road	UT
Planned site	UB

Southampton Urban Area

Table 15-37: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Southampton Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0019	3	1	2	1	2	0	0	No change required	No change required

Table 15-38: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Southampton Urban Area

Station name	Station type
Southampton A33	UT
Southampton Centre*	UB
Planned site	UB

Birkenhead Urban Area

Table 15-39: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Birkenhead Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0020	3	1	2	1	2	0	0	No change required	No change required

Table 15-40: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Birkenhead Urban Area

Station name	Station type
Birkenhead Borough Road	UT
Wirral Tranmere*	UB
Planned site	UB

Southend Urban Area

Table 15-41: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Southend Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0021	3	1	2	1	2	0	0	No change required	No change required

Table 15-42: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Southend Urban Area

Station name	Station type
Southend-on-Sea*	UB
Planned site	UT
Planned site	UB

Blackpool Urban Area

Table 15-43: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Blackpool Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0022	2	1	1	1	1	0	0	No change required	No change required

Table 15-44: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Blackpool Urban Area

Station name	Station type
Blackpool Marton*	UB
Blackpool Whitegate Drive	UT

Preston Urban Area

Table 15-45: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Preston Urban Area

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0023	2	1	1	1	1	0	0	No change required	No change required

Table 15-46: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Preston Urban Area

Station name	Station type
Preston*	UB
Planned site	UT

Eastern

Table 15-57: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Eastern

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0029	11	4	7	4	7	4	-4	No change required	No change required

Table 15-58: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Eastern

Station name	Station type
Borehamwood Meadow Park	UB
Luton A505 Roadside	UT
Norwich Lakenfields*	UB
Peterborough Garton End	UB
Eastern - Sandy Roadside Replacement	UT
Sibton	RB
St Osyth	RB
Stanford-le-Hope Roadside	UT
Thurrock	UB
Weybourne	RB
Wicken Fen	RB
Planned site	UB
Planned site	UT
Planned site	UB
Planned site	UB

South West

Table 15-59: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - South West

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0030	11	4	7	4	7	2	-2	No change required	No change required

Table 15-60: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - South West

Station name	Station type
Barnstaple A39	UT
Charlton Mackrell	RB
Honiton	UB
Plymouth Centre*	UB
Saltash Callington Road	UT
Swindon Walcot	UB
Yarner Wood	RB
Planned site	UT
Planned site	UT
Exeter Polsoe	UB
Planned site	UB
St Austell East Hill	UB
Torbay Brewery Park	UB

South East

Table 15-61: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - South East

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0031	15	5	10	6	10	3	-4	No change required	No change required

Table 15-62: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - South East

Station name	Station type
Planned site	UT
Chilbolton Observatory	RB
Eastbourne*	UB
Horley	SI
Lullington Heath	RB
Maidstone Upper Stone Street	UT
Milton Keynes Civic Centre	UB
Oxford St Ebbes*	UB
Rochester Stoke	RB
Storrington Roadside	UT
Planned site	UB
Aylesbury A4157	UT
Planned site	UB
Planned site	UB
Planned site	UB
Planned site	UB
Planned site	UB
Planned site	UT
South East UB - Canterbury replacement	UB

East Midlands

Table 15-63: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - East Midlands

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0032	10	4	6	4	6	3	-3	No change required	No change required

Table 15-64: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - East Midlands

Station name	Station type
Chesterfield Loundsley Green*	UB
Chesterfield Roadside	UT
Derby St Alkmund’s Way	UT
Derby Stockbrook Park	UB
Ladybower	RB
Mansfield Ladybrook	UB
Northampton Spring Park*	UB
Tallington	RB
Toft Newton	RB
Planned site	UB
Planned site	UT
Planned site	UB
Planned site	UT

North West and Merseyside

Table 15-65: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - North West and Merseyside

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0033	9	3	6	3	6	1	-1	No change required	No change required

Table 15-66: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - North West and Merseyside

Station name	Station type
Blackburn Audley Park	UB
Carlisle Morton A595	UT
Crewe Coppenhall	UB
Glazebury	RB
Middlewich St Michael’s Way	UT
Warrington	UB
Planned site	UB
Planned site	UB
Planned site	UB
Planned site	UT

Yorkshire and Humberside

Table 15-67: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - Yorkshire and Humberside

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0034	9	3	6	3	6	1	-1	No change required	No change required

Table 15-68: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - Yorkshire and Humberside

Station name	Station type
Barnsley Gawber	UB
Doncaster A630 Cleveland Street	UT
High Muffles	RB
Immingham Woodlands Avenue	UB
York Bootham*	UB
York Fishergate	UT
Planned site	UB
Planned site	UB
Planned site	UB
Scunthorpe Town	UI

West Midlands

Table 15-69: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - West Midlands

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0035	9	3	6	3	6	0	0	No change required	No change required

Table 15-70: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - West Midlands

Station name	Station type
Burton-on-Trent Horninglow	UB
Cannock A5190 Roadside	UT
Leamington Spa*	UB
Leamington Spa Rugby Road	UT
Shrewsbury Underdale	UB
Telford Hollinswood	UB
Planned site	UB
Planned site	UT
Worcester Tolladine	UB

North East

Table 15-71: Existing monitoring and monitoring targets for PM2.5 targets (including planned new sites) - North East

Zone code	Target monitoring	Required NS	Required UB and SB	NS	UB and SB	Other	Number to target (diffuse)	NS target	UB target
UK0036	6	2	4	2	4	1	-1	No change required	No change required

Table 15-72: Monitoring stations and site environments for PM2.5 targets (including planned new sites) - North East

Station name	Station type
Hartlepool St Abbs Walk	UB
Kielder Water	RB
Stockton-on-Tees Eaglescliffe	UT
Sunderland Silksworth*	UB
Sunderland Wessington Way	UT
Planned site	UB
Planned site	UB

Network-wide criteria

Table 16 shows the calculated ratios of urban background to urban traffic monitoring for NOX and NO2, PM (both size fractions combined), CO and benzene, as specified in the footnote of the table in AQD Annex V.

The ratios are designed to ensure that the evidence base is well balanced and representative without unreasonably favouring compliant environments. The monitoring balance does not differ by more than a factor of 2 for NOX and benzene. For PM and CO, the ratio does differ by a factor of 2 or more (see below), for valid reasons:

• The CO monitoring network is a minimal network made up of 7 monitoring stations spread across England and the devolved governments. The ratio has been calculated for CO as part of the assessment for completeness, but no change is recommended because all zones are classified as below the LAT and monitoring is not a requirement. The PM network has seen a large expansion programme commencing in 2022 to fulfil the requirements of the PM2.5 targets legislation for England. Whilst the ratios still remain within the thresholds, in the future this will change

• The expansion will result in the ratio of urban background to urban traffic to differ by more than a factor of 2. This is because the rules governing the classification of these sites define urban background and ‘near source’ sites (which includes industrial sites as well as traffic-orientated sites) which can affect the ratio

The ratio of PM10 to PM2.5 does not differ by more than a factor of 2. This is largely the result of dual channel FIDAS instruments being prevalent throughout the network which has resulted in both PM10 and PM2.5 size fractions being collocated and naturally promotes a 1 to 1 ratio.

Historical approaches to network design have resulted in ratios that offer some degree of flexibility in the future configuration of the network without challenging the requirements (for example, most are close to a 1:1 ratio). No change is required in monitoring as a result of any of the calculated ratios.

Where ratios are technically divergent from the required ratio, this is a result of monitoring site numbers significantly in excess of the minimum requirement in order to support other scientific and legislative goals.

Table 16 Network wide criteria summary of calculated ratio of UB to UT monitoring

Pollutant	Ratio value	Change required
NOX and NO2	1.0	N
PM (PM10 and PM2.5 combined)	1.6	N [Note 7]
CO	5.0	N [Note 8]
Benzene	1.2	N

[Note 7] The number of stations significantly exceeds to minimum number required by the Air Quality Standards Regulations.

[Note 8] Ratio calculated but irrelevant because CO is <LAT across all zones, therefore no monitoring is required.

Table 17 Network wide criteria summary of PM10 to PM2.5 ratio

Ratio type	Ratio value	Change required
PM10 to PM2.5 ratio	1.1	N

Actions and recommendations

Underpinned by the approach and analysis detailed above, this section presents recommendations for consideration to ensure compliant national networks that continue to deliver value for money.

A number of changes are advisable under this assessment that result from changes in the:

• pollution climate (as represented in the Assessment Threshold status)

• population assigned to the zone as a result of data from mid-year estimates for 2023 derived from data provided by the Office for National Statistics for England and Wales, National Records of Scotland and Northern Ireland Statistics and Research Agency

• operational monitoring network (for example, unforeseen site closures, site relocations) identified by network managers as part of their operational duties

NOX and NO2

NO2 is the only pollutant for which new monitoring has been identified by this assessment. A summary of those zones requiring monitoring changes is provided in Table 17, below, and includes the specification required to satisfy the assessment and the reason for this change.

Table 18 Summary of NO2 monitoring configuration changes

Zone	Action	Reason
Greater Manchester UA (UK0003)	One site to target (any classification)	Historical population increase resulting in band change
Tyneside UA (UK0005)	One site to target (any classification)	Historical population increase resulting in band change
Liverpool UA (UK0006)	One UB to target	Historical population increase resulting in band change, incorporation of UUNN dataset to establish AT classification under most recent methodology
East Midlands (UK0032)	One site to target (any classification)	Population increase resulting in band change
West Midlands (UK0035)	One site to target (any classification)	Historical population increase resulting in band change
North East (UK0036)	One site to target (any classification)	Historical population increase resulting in band change
Central Scotland (UK0037)	One UB to target	Population increase resulting in band change
North Wales (UK0042)	One UB to target	Historical population increase resulting in band change

Particulate matter, ozone, benzene, SO2, B[a]P, metals

For these pollutants, where no new monitoring requirement has been identified, we recommend that these networks remain in their current configuration, but this could be reconsidered in the future as pollutants concentration and population sizes change.

Despite general declines in concentrations in recent years, notably coincident with the global onset of Covid-19, the general legislative landscape for air quality is one of increasing stringency. If the stringency of the thresholds were to increase in the future, under the established ruleset, the minimum target monitoring would rise and the apparent excess showing in the summary tables would be removed.

It is recommended that Defra, the Environment Agency and the network operators review the summary tables in this assessment alongside any strategic considerations and network-specific issues (for example, sites that are marked for closure or de-affiliation due to external factors; clear instances where several sites in the same zone are regarded to perform the same function and represent the same site classification). This may inform specific arguments to rationalise several sites.

A significant number of additional PM sites have been established to support the new regulations for PM2.5 so it is recommended that the current particulate matter network be retained.

SO2 concentrations have been in decline for many years. Concentrations are now so low that they are often below the detection limit of the instruments available to the network. There has not been an exceedance of the LVs or LAT for many years.

It is recommended that the evidence base from measurements for SO2 be reduced to a minimal network (consistent with the approach to measuring CO in recent years) in favour of an objective estimation compliance reporting approach. A minimal network is required to validate the emissions inventory and long-term concentration trends.

We recommend that such a network approach is based on the current design for CO monitoring which already serves England and the devolved governments with appropriate geographical coverage.

There may be some scope for minor rationalisation of the Hydrocarbons Network (as reviewed and advised by the network operator) but, unlike the SO2 network, the measurements are above the limit of detection and so should be considered for their continuing evidential value.

Ozone monitoring across the AURN is currently expanding with 16 AURN sites having ozone added (mostly rural locations) in the last 2 years. With reductions in NOX from road traffic and other sources, it has been anticipated that ozone (particularly in urban areas) will rise and more frequently report moderate DAQI levels.

It is therefore important to retain this measured evidence for public health information, as well as for compliance reporting, and to understand the changing trends more fully. It is recommended that existing ozone monitoring is retained for the foreseeable future.

B[a]P is an increasingly high-profile pollutant as a result of increasing public awareness through Defra’s information campaigns about domestic fuel burning and local authority management of smoke control areas.

The recent rise in solid fuel combustion and Defra’s resulting policy focus places significant evidential focus on the existing network in assessing trends from this emissions sector and in representing public exposure. The monitoring also has a critical role to play in reinforcing other parts of the wider evidence base, for example the NAEI emission factors and the spatial disaggregation of these emissions (likely to affect dispersion modelling studies). It is advisable that the measured evidence is retained as a reliable cross check.

There are valid reasons for the large apparent excess in metals monitoring (for example, significant legacy local sources such as Sheffield, South Wales, Pontardawe, Scunthorpe). Where nickel exceedances continue or have recently been reporting, we recommend a continuation of monitoring and this means that all other metals are also retained (as the sampling method for all relies on the same filter). The rural background sites have particular research value by virtue of their long data record which extends back to the time of the rural metals network.

There is significant scientific interest in the network, particularly in representing persistent metals concentrations associated with resuspended legacy dust and the increasing significance of emissions from brake wear. It is recommended that this network, which is not large, is retained in its current configuration.