Braintree District Council. Local Air Quality Management Progress Report. April 2004

Transcription

1 Local Air Quality Management Progress Report April 2004

2 Report written by: Clare Alexander Essex County Council Waste, Recycling and Environment Environmental Strategy County Hall Chelmsford Essex CM1 1QH On behalf of: Colin Batchelor Braintree District Council Environmental Health Dept. Causeway House Bocking End Braintree CM7 9HB This report has been compiled as part of the Essex Air Quality Consortium Monitoring Network.

3 Contents 1. Introduction... 1 Outcomes of previous Review and Assessments for Braintree Monitoring data... 2 Nitrogen dioxide... 3 Particulates (PM 10 ) Emission sources... 6 New Developments Planning and Policies Local Transport Plan Summary and Conclusions... 8 Tables Table 2.1: Monitoring results for Braintree Town Centre site, Table 2.2: Summary of monitoring results for A12 Hatfield Peverel site Table 2.3 : NO 2 Diffusion tube monitoring results (in µg/m 3 ), with projected 2005 results; bias adjustments not applied... 3 Table 3.1 Industrial Emission Sources in Braintree... 6 Table 3.1 contd. Industrial Emission Sources in Braintree... 7 Figures Figure 2.1: Location of air quality monitoring station in Braintree... 5

4 1. Introduction This Progress Report is a requirement of the Environment Act 1995, Part IV, which places a duty on local authorities to periodically review and assess air quality within their location. The Progress Report follows on from the Updating and Screening Assessment (USA) which was carried out in 2003 as part of the second round of Review and Assessment. The USA report concluded that there is currently no risk of exceeding any of the air quality objectives and that a detailed assessment is not required for the current round of Review and Assessment. The objective of the Progress Report is to provide continuity in the Local Air Quality Management process by reporting any potential changes in air quality that may occur between the three yearly review and assessments of air quality. This report has been compiled with reference to the Progress Report Guidance (LAQM.PRG(03)) which was published by DeFRA in It presents information which has been collated since the production of the USA report, including: air quality monitoring data, information about emission sources and any proposed developments which have the potential to affect air quality in the District. Outcomes of previous Review and Assessments for Braintree Braintree District Council undertook their First Round of review and assessment, including Stage 1, 2 and 3 reports, between The main air quality issues were found to be emissions of NO 2 and PM 10 from vehicles on the A12 and A120. It was predicted that all of the air quality objectives would be achieved and that it was therefore not necessary to declare any Air Quality Management Areas (AQMA) for any pollutant. The USA reconsidered the seven health based air quality objectives and concluded that there was still no risk of exceedance. Therefore, there is no requirement to carry out a detailed assessment for the Second Round of Review and Assessment. 1

5 2. Monitoring data Braintree District Council measures air quality in the district using two automatic air quality monitoring stations and passive diffusion tubes at 8 locations. The site locations are shown in figure 2.1. The first of the automatic monitoring stations is located at the council offices in Braintree Town Centre (Bocking End) and has been operating since The site is classified as urban background and measures concentrations of oxides of nitrogen, sulphur dioxide, ozone and PM 10. The site also collects data on temperature, wind speed and direction. There have been problems with low data capture from the sulphur dioxide and PM 10 monitors at this site, so data has not been reported. The second site was established near to the A12 at Hatfield Peverel in November 2002, and measures concentrations of all particulates, including PM 10. It should be noted that there is no exposure at this site and results are being used to verify the conclusions of the modelling predictions in previous Review and Assessment reports. The results of the various monitoring programmes are summarised in tables 2.1 to 2.3 below. Table 2.1: Monitoring results for Braintree Town Centre site, Pollutant Statistic Projected 2005 (from 2003) Nitrogen Annual mean dioxide ( g/m 3 ) Max. 1 hour mean ( g/m 3 ) Exceedences of hourly objective Data capture (%) Table 2.2: Summary of monitoring results for A12 Hatfield Peverel site 2003 Pollutant Statistic 2003 Particles (PM 10 ) Annual mean ( g/m 3 ) 27.2 Maximum 24 hour mean Exceedences of 24 hour 14 mean objective Data capture (%) 49.5* * equipment failed and was out of operation for 5 months during

6 Table 2.3 : NO 2 Diffusion tube monitoring results (in µg/m 3 ), with projected 2005 results; bias adjustments not applied Site code Location Site type Projected NO (from 2003) Braintree 1N London Road, Kerbside Braintree Braintree 5N Coggeshall Kerbside Road, Braintree Braintree 4N Templar Rd (off Background Beckers Green), Braintree Braintree 6N Bocking End, Kerbside Braintree Witham Eastern Road, Roadside Witham White Notley Faulkbourne, Background Witham Halstead Head Street, Roadside Halstead Halstead Trinity Street, Halstead Background Technical Guidance (LAQM.TG (03)) recommends co-location of diffusion tubes with an automatic analyser to ensure the accurate and representative reporting of NO 2 concentrations, with any positive or negative local bias taken into account. In the absence of a local bias adjustment factor, as precautionary approach, no bias adjustment factor has been applied. Nitrogen dioxide Concentrations of nitrogen dioxide at the urban background continuous monitor are well below objective limits. The highest concentration of 24.3 gm -3 was measured in 2000, since then concentrations have decreased and stabilised at 19.0 gm -3. Data for 2003 has been projected forwards to 2005 to give a predicted annual mean concentration of 18.2 gm -3. Diffusion tube monitoring results show that there are no current or predicted exceedences of the NO 2 annual mean objective, even at busy kerbside locations. In 2003, most sites experienced an increase from the 2002 concentrations. In the previous year, most sites experienced a decrease in concentrations. There is insufficient data to comment on trends in concentrations at any of the sites. Commentary on the trends in concentrations will be provided in the 2005 Annual Progress Report, when data from 2004 can be taken into account. 3

7 A new diffusion tube site was set up at the end of 2003, co-located at the automatic analyser near to the A12. Results from this monitoring site will also be reported in the 2005 Annual Progress Report. Particulates (PM 10 ) The A12 monitoring site has been operating since the end of During 2003 data capture was low as a result of equipment failure between July and November. Therefore the monitoring results should be treated with caution. The annual mean concentration at the site was 27.2 gm -3, which is well below the air quality objective. The maximum 24 hour mean concentration was gm -3 and there were 14 exceedances of the 24 hour mean objective, which is within permitted levels. It should be noted however that these concentrations are based on 6 months of data which was largely collected during the winter months when concentrations are generally lower. Data for 2004 will be reported in the 2005 Annual Progress Report. 4

8 Figure 2.1: Location of air quality monitoring station in Braintree Reproduced by permission of Ordnance Survey on behalf of the Controller of Her Majesty's Stationery Office. Crown Copyright. Licence number LA

9 3. Emission sources When the Updating and Screening Assessment was carried out in 2003, there were no Part A industrial sources and 58 Part B industrial sources (of which, 21 were petrol stations) in the district of Braintree. These are listed in Table 3.1. Since the USA was carried out there have been no new industrial processes which have commenced operating and three industrial processes are no longer operating. Additional information about changes to existing processes are listed in the Notes column of table 3.1. A number of changes to authorised processes are expected during Applications will be determined for three existing processes which are transferring to the new Pollution Prevention Control regime. Braintree District Council is also actively locating waste oil burners which are operating without an authorisation and bringing them into the pollution control regime. Gravel extraction is due to commence during 2004 at a distance of 500m from the B1018 between Cressing and Witham. Dust levels will be monitored by the operator and additional diffusion tubes may be deployed if significant increases in heavy traffic occurs along the B1018. An update on these matters will be provided in the 2005 Progress Report. Table 3.1 Industrial Emission Sources in Braintree PROCESS NAME PROCESS TYPE PG NOTE Notes South East Galvanisers Ltd Non - ferrous metal 2/2 Name change Hanson Quarry Products Europe Cement batching 3/1 RMC (Eastern) Cement batching 3/1 J L French Ltd Non - ferrous metal-aluminium foundry 2/6 The Bulmer Brick & Tile Co. Ltd. Ceramic process 3/6 Dietex International Ltd Treatment of animal & vegetable matter 6/26 Milbank Floors Ltd. Cement batching 3/1 Laird Security Hardware Ltd Non - ferrous metal 2/7 Maycast Nokes Ltd. Non - ferrous metal 2/6, 2/7, 6 2/4, 2/6, 2/8 Finch Seaman Enfield Ltd Non - ferrous metal F H Nash Ltd. Treatment of animal & vegetable matter 6/26 Woodford Litho Ltd. Printing process 6/16 Crittall Windows Ltd. Coating process 6/31 Trane (UK) Ltd Di-isocyanate process 6/29 Factory Lane Autos Ltd. Vehicle respraying 6/34 Ceased operating Braintree Accident Repair Centre Vehicle respraying 6/34 Carier Bulk Material Handling Ltd. Coating process 6/23 Conefleet Ltd. Small Waste Oil Burner 1/1 Courtenham Ltd. Small Waste Oil Burner 1/1 Braintree Yellow line Small Waste Oil Burner 1/1 C L Panelcraft Vehicle respraying 6/34 Premdor Crosby Ltd Timber process / treatment 6/2 T & K Weavers Mobile concrete crusher 3/16 Branwell Products Ltd Mineral process using natural graphite 3/5 Bolt Building Supplies Ltd Timber process 6/2

10 Table 3.1 contd. Industrial Emission Sources in Braintree PROCESS NAME PROCESS TYPE PG NOTE Notes Transporter Engineering Ltd Coating process 6/23 Baystart Ltd Small Waste Oil Burner 1/1 Wicks Coaches Small Waste Oil Burner 1/1 Harrow Cross Bodyworks Small Waste Oil Burner 1/1 G & B Finch Ltd Mobile concrete crusher 3/16 Dovercourt Accident Repair Ctr Vehicle respraying 6/34 Lancaster (Witham) Vehicle respraying 6/34 C A Blackwell Mobile concrete crusher 3/16 C A Blackwell Contracts Ltd Mobile concrete crusher 3/16 Heijmans Blackwell Remediation Mobile concrete crusher 3/16 McFletch Hire Services Mobile concrete crusher 3/16 Texaco A12 Feering Petrol vapour recovery 1/14 Lynfield Motors Petrol vapour recovery 1/14 Dovercourt Motor Company Ltd Petrol vapour recovery 1/14 Shell Whitecourt Petrol vapour recovery 1/14 Star Rayne Road Petrol vapour recovery 1/14 R. T. F. Commercial Small Waste Oil Burner 1/1 Safeway Stores Petrol vapour recovery 1/14 Tesco Stores Petrol vapour recovery 1/14 Total Petrol vapour recovery 1/14 Bradwell Service Station Petrol vapour recovery 1/14 Mount Hill Autopoint Petrol vapour recovery 1/14 BP Filling Station Petrol vapour recovery 1/14 BP Filling Station, Rivenhall North Petrol vapour recovery 1/14 Ceased operating BP Filling Station, Rivenhall Sth Petrol vapour recovery 1/14 Doe Motors Petrol vapour recovery 1/14 Texaco Petrol vapour recovery 1/14 Shell Service Station Petrol vapour recovery 1/14 Sainsburys Petrol vapour recovery 1/14 South Street Service Station Petrol vapour recovery 1/14 Ceased operating Halstead Service Station Petrol vapour recovery 1/14 Total Service Station Petrol vapour recovery 1/14 Eley's Petrol vapour recovery 1/14 New Developments There are no new developments that are likely to have an impact on air quality. 7

11 4. Planning and Policies There are currently no planning applications which will require an air quality assessment. 5. Local Transport Plan Braintree District is covered by the Essex County Council Local Transport Plan. There are a number of general measures in the Essex LTP which are aimed at reducing the impact of road transport on air quality. The District Council is working in partnership with the Highways and Transportation department to ensure that new traffic management schemes consider the potential impact on air quality. Additional air quality monitoring programmes are being introduced as part of the monitoring requirements of the LTP. 6. Summary and Conclusions The Progress Report shows that Braintree District is currently meeting the air quality objectives and is not at risk of exceeding the objectives by the relevant target dates. The District Council is working in partnership with key stakeholders to ensure that the air quality in Braintree remains below objective limits and continues to improve. The District Council does not need to carry out any detailed assessment as a result of any findings of the Progress Report. The next air quality report to be prepared and submitted to DeFRA will be the 2005 Progress Report. 8