Brentwood Borough Council – England Date April 2010 2010 Air Quality Progress Report for Brentwood Borough Council In fulfillment of Part IV of the Environment Act 1995 Local Air Quality Management Date April 2010 . Progress Report i Brentwood Borough Council – England Date April 2010 Local David Carter Authority Officer Department Environmental Health & Enforcement Address Brentwood Borough Council Council Offices Ingrave Road Brentwood Essex CM15 8AY Telephone 01277 312509 e-mail [email protected] Report BRE/PR2010 Reference Final Copy/April09 number Date 09th April 2010 Report written by: Paul Hinsley Environment, Strategy and Highways Essex County Council County Hall Chelmsford Essex CM1 1QH On behalf of the: Essex Air Quality Consortium Monitoring Network. ii Progress Report Brentwood Borough Council – England Date April 2010 Executive Summary The Progress Report 2010 review of 2009 monitoring data has identified 9 monitoring locations exceeding the NO2 annual mean objective. There are 8 monitored exceedances within Brentwood’s AQMAs and 1 monitored exceedance outside of Brentwood’s AQMAs. Exceedances of the NO2 annual mean objective were measured at the following sites outside of the Brentwood AQMAs: • BRW 35 – High Street, Brentwood This monitoring location was sited on a traffic island in the centre of the road carriageway, which was not providing an appropriate indication of receptor conditions. The monitoring location has been removed in the recent highway improvements and it is not now possible or considered relevant to continue monitoring at this site. Brentwood Borough Council will continue to monitor NO2 concentrations at the junction of High Street and Kings Road in Brentwood (BRW12/13/14 &15). This will enable the council to identify the effect on local air quality of a new slip road from High Street to Weald Road and various traffic calming measures which have been installed to improve traffic flow and reduce traffic volumes on the High Street. If exceedances of the annual mean NO2 objective are monitored now that the slip road has been completed, then the council will proceed to a Detailed Assessment. A review of the monitoring data collected at these diffusion tube sites will be included in future LAQM Annual Progress Reports. Progress Report iii Brentwood Borough Council – England Date April 2010 Table of contents 1 Introduction 6 1.1 Description of Local Authority Area 6 1.2 Purpose of Progress Report 6 1.3 Air Quality Objectives 6 1.4 Summary of Previous Review and Assessments 8 2 New Monitoring Data 17 2.1 Summary of Monitoring Undertaken 17 2.2 Comparison of Monitoring Results with Air Quality Objectives 26 3 New Local Developments 32 4 Local / Regional Air Quality Strategy 33 5 Local Transport Plans and Strategies 34 6 Implementation of Action Plans 35 7 Conclusions and Proposed Actions 36 7.1 Conclusions from New Monitoring Data 36 7.2 Other Conclusions 37 7.3 Proposed Actions 37 8 References 38 iv Progress Report Brentwood Borough Council – England Date April 2010 Appendices Appendix 1 QA:QC data Appendix 2 Brentwood Borough Council Monitoring Data 2009 Appendix 3 Brentwood Borough Council LAPPC Permit Register List of Tables Table 1.1 Air Quality Objectives included in Regulations for the purpose of Local Air Quality Management in England. Table 2.1 Details of Automatic Monitoring Site Table 2.2 Details of Non- Automatic Monitoring Sites Table 2.3a Results of Automatic Monitoring for Nitrogen Dioxide: Comparison with Annual Mean Objective, hourly mean >200 µgm3 and data capture. Table 2.3b Results of Automatic Monitoring for Nitrogen Dioxide: Comparison with 1-hour Mean Objective Table 2.4 Results of Nitrogen Dioxide Diffusion Tubes List of Figures Figure 1.1.1 Map of Brentwood AQMA Boundaries To 1.1.7 Figure 2.1a Map and view of Automatic Monitoring Site Figure 2.2.1 Maps of Non-Automatic Monitoring Sites To 2.2.4 Figure 2.3 Trends in Hourly Mean Nitrogen Dioxide Concentration Measured at Automatic Monitoring Site Progress Report v Brentwood Borough Council – England Date April 2010 1 Introduction 1.1 Description of Local Authority Area The Borough of Brentwood is situated in the southwest of Essex and is a pleasant, busy town situated within the Metropolitan Green Belt. Apart from its urban heart, the Borough of Brentwood has about 3,000 acres (about 1,215 hectares) of woodland, yet it is only 18 miles from London. There are a number of major roads in Brentwood including the M25, A12, A128, A1023 and A129. 1.2 Purpose of Progress Report Progress Reports are required in the intervening years between the three-yearly Updating and Screening Assessment reports. Their purpose is to maintain continuity in the Local Air Quality Management process. They are not intended to be as detailed as Updating and Screening Assessment Reports, or to require as much effort. However, if the Progress Report identifies the risk of exceedance of an Air Quality Objective, the Local Authority (LA) should undertake a Detailed Assessment immediately, and not wait until the next round of Review and Assessment. 1.3 Air Quality Objectives The air quality objectives applicable to Local Air Quality Management (LAQM) in England are set out in the Air Quality (England) Regulations 2000 (SI 928) and the Air Quality (England) (Amendment) Regulations 2002 (SI 3043). They are shown in Table 1.1. This table shows the objectives in units of microgrammes per cubic metre µg/m3 (for carbon monoxide the units used are milligrammes per cubic metre, mg/m3). Table 1.1. includes the number of permitted exceedances in any given year (where applicable). 6 Progress Report Brentwood Borough Council – England Date April 2010 Table 1.1 Air Quality Objectives included in Regulations for the purpose of Local Air Quality Management in England. Pollutant Date to be Concentration Measured as achieved by Benzene 16.25 µg/m3 Running annual 31.12.2003 mean 5.00 µg/m3 Running annual 31.12.2010 mean 1,3-Butadiene 2.25 µg/m3 Running annual 31.12.2003 mean Carbon monoxide 10.0 mg/m3 Running 8-hour 31.12.2003 mean Lead 0.5 µg/m3 Annual mean 31.12.2004 0.25 µg/m3 Annual mean 31.12.2008 Nitrogen dioxide 200 µg/m3 not to be 1-hour mean 31.12.2005 exceeded more than 18 times a year 40 µg/m3 Annual mean 31.12.2005 3 Particles (PM10) 50 µg/m , not to be 24-hour mean 31.12.2004 (gravimetric) exceeded more than 35 times a year 40 µg/m3 Annual mean 31.12.2004 Sulphur dioxide 350 µg/m3, not to be 1-hour mean 31.12.2004 exceeded more than 24 times a year 125 µg/m3, not to be 24-hour mean 31.12.2004 exceeded more than 3 times a year 266 µg/m3, not to be 15-minute mean 31.12.2005 exceeded more than 35 times a year Progress Report 7 Brentwood Borough Council – England Date April 2010 1.4 Summary of Previous Review and Assessments Brentwood Borough Council undertook their first round of review and assessment, including Stages 1, 2 and 3 reports, during the period 1998 and 2000, following the introduction of the National Air Quality Strategy and Air Quality Regulations. The first round assessments (Stages 1, 2 and 3) concluded that road traffic emissions from vehicles on the M25, A12 and A127 were the main concerns relating to local air quality. However, it was concluded that it was not necessary to declare any AQMAs at that time. The second round of review and assessment was undertaken between 2003 and 2005, commencing with the USA. The USA (2003) reconsidered the seven health based AQS objectives and concluded that a Detailed Assessment would be required for road traffic emissions from the A12 and the following Junctions: M25/A12; A128 A1023 Wilson’s Corner; and Brentwood High Street /Kings Road. In addition, the USA concluded that the provisional annual PM10 objective for 2010 was predicted to be exceeded at all busy roads and junctions assessed, due to the high modelled background PM10 for 2010. Consequently, it was recommended that this would be likely to require further consideration in future air quality assessments. A Detailed Assessment was completed in 2004 and assessed the NO2 annual mean AQS objective (40 µg/ m3) using the ADMS-Roads air quality model. The results of the detailed modelling showed that there were likely to be exceedances of the NO2 annual mean objective identified at the nearest receptors to A12, the A12 / M25 and A128 / A1023 Wilson’s Corner junctions. An exceedance of the objective (40.5µg/m3) was predicted also for 2005 at the nearest receptor to the High Street / Kings Road junction. As a consequence of the Detailed Assessment, it was recommended that Brentwood Borough Council considered declaring AQMAs on the basis of the potential exceedances that were identified. Following consideration of this report the Council designated the following AQMAs shown below: • BRW1 – close to the M25 / Nags Head Lane junction • BRW2 – part of M25 / A12 Brook Street roundabout • BRW3 – part of A12 and Greenshaw and Porters Close • BRW4 – part of A12 / Warescot Road / Hurstwood Avenue / Ongar Road • BRW5 – part of A12 and Roman Road Mountnessing • BRW6 – part of A12 / Fryerning Lane/ Pemberton Avenue / Trimble Close • BRW7 – A128 / A1023 Junction (Wilson’s Corner) 8 Progress Report Brentwood Borough Council – England Date April 2010 A Further Assessment of air quality within the AQMAs was carried out in 2005, to determine the main source of pollution and how much improvement is needed to meet the objectives. The report found that more than 80% of emissions of oxides of nitrogen in the AQMAs came from road traffic, with Heavy Duty Vehicles contributing a significant proportion.