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INDEX

Executive Summary Introduction Review of Previous Studies Air Quality Standards for Benzene Monitoring Methodology 1.    Selection of Sampling Locations 2.    Sampling and Analysis Techniques Results 1.    Diffusive Sampling 2.    Continuous Sampling Discussion 1.    Benzene Levels at Forecourt and Pump Sites 2.    Benzene Levels at Roadside Sites 3.    Influence of Road Traffic Emissions on Forecourt Benzene Levels 4.    Comparison with Air Quality Standard 5.    Calculation of Personal Exposure 6.    Influence of Stage I and II Controls 7.    Comparison with Other Studies 8.    Assessment of Seasonal Variation Conclusions Recommendations for Further Study References Appendices Appendix 1. Descriptions of Petrol Stations used in Study Appendix 2. Sampling and analytical methodology Appendix 3. Two Weekly Average Concentrations - not available Appendix 4. Daily Means, One Hour Averages and Thirty Minute Averages Collected by the BTX Analyser - not available