Environmental Protection Department Air Science Group i Guidelines on Choice of Models and Model Parameters (Revised) ii Guidelines on Assessing the 'Total' Air Quality Impacts (Revised) iii Guidelines on the Use of Alternative Computer Models in Air Quality Assessment iv Guidelines on the Estimation of PM2.5 for Air Quality Assessment in Hong Kong v Guidelines on the Estimation of 10-minute Average SO2 Concentration for Air Quality Assessment in Hong Kong vi PATH DocumentationExecutive Summary (Chinese) Executive Summary (English) Final Report Model Configuration Emission Information Emission Spatial Distribution NOx RSP SO2 vii PATH-2016 Data Dissemination viii PATH-2016 Download User review date: Tuesday, 23 September, 2014