Stage 4 Review and Assessment for Waltham Forest
October 2002
ERG, King's College, London
4th Floor Franklin Wilkins Building
150 Stamford Street, London
SE1 9NN
Telephone: 020 7960 4011
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Executive Summary (pdf) [82KB]
Chapter 1: Introduction to Stage 4 Further Assessment of Air Quality (pdf) [140KB]
1.1 Overview to Stage 4
1.2 Background - National Perspective
1.3 Background - London Borough of Waltham Forest Perspective
1.4 National Policy Developments
1.5 Use of New Emission Factors
Chapter 2: Predictions of Nitrogen Dioxide (NO2) and Particles (PM10) in LBWF's (pdf) [532KB]
2.1 Area Outline of Modelling Developments
2.2 Annual Mean (PPB)in 2005
2.3 Daily Mean PM10 Concentrations in 2004
2.4 Source Apportionment for NOx at PM10 in LBWF's Area
2.4.1 Methodology
2.4.2 Annual mean NO2 at identified locations within the Council's area
2.4.3 Source apportionment of NOX at the identified locations
2.4.4 Source apportionment of PM10 at the identified locations
Chapter 3: The Effectiveness of Possible Interventions (pdf) [211KB]
3.1 Scenario Selection
3.2 Scenario Testing
3.3 Results of Scenario Test
3.4 Commentary on Possible Interventions
Chapter 4: Conclusion (pdf) [73KB]
Appendix A (pdf) [161KB]
1. Model Development
1.1.1 Model Dilution
1.2 NOx And NO2 Relationships
1.2.1 The Adopted Method
1.2.2 Roadside/Background Concentrations
Appendix B (pdf) [252KB]
1. Modelling Detailed Road Networks
1.1 Geographic Accuracy of Model Predictions
1.2 Emissions at Major Road Junctions
Appendix C (pdf) [824KB]
1. Model Validation
1.1 Predictions of Annual Average NO2 in London
1.2 Predictions of the 24 hour mkean AQS PM10 Objective
Appendix D (pdf) [601KB]
1. Emissions from Road Transport in London
1.1 Overview of the London Atmospheric Emissions Inventory
1.2 Base Year and Pollutants Covered
1.3 Major Road Flows
1.4 Local Authority Traffic Counts
1.5 LTS Road Flows
1.6 Minor Road Flows
1.7 Vehicle Age by Road Type
1.8 Vehicle Speed Estimates
1.9 Bus Data and Assumptions
Appendix E (pdf) [232KB]
1. Model Uncertainty Assessment
1.1 Introduction
1.2 Uncertainty Assumption in Model Input Parameters
1.3 Bayesian Monte Carlo Analysis
1.4 Results at Background
1.5 Results at Roadside
Appendix F (pdf) [177KB]
1. Air Pollution Measurements in London
1.1 Monitoring Update
1.2 Nitrogen Dioxide
1.3 Particles (PM10)
References (pdf) [77KB]
Figure 1 (pdf) [144KB]
Predicted annual mean NO2 objective for 2005 in the London Borough of Waltham Forest
(based on 1999 met. year)
Figure 2 (pdf) [142KB]
Predicted 24 hour mean PM10 objective for 2004 in the London Borough of Waltham Forest
(based on 1996 met. year)
Figure 4 (pdf) [113KB]
Predicted annual mean NO2 objective for 2005 in the London Borough of Waltham Forest
(based on 1999 met. year) Low Emission Zone
