M4 East EIS Volume 2B App H Part 1 Air Quality

M4 East EIS Volume 2B App H Part 1 Air Quality (pdf)

Contents Pages
Glossary of terms and abbreviations viii
Executive summary xi
The project xi
The purpose of this report xii
Scenarios xii
Methods and conclusions xiii
Management of impacts xiv
1 Introduction 1
1.1 Overview of the project 1
1.2 Project location 1
1.3 Purpose of this report 4
1.4 Structure of the Report 5
2 Proposed project 13
2.1 Overview of Chapter 13
2.2 Project features 13
2.3 Construction activities 14
2.4 Specific aspects of design relating to in-tunnel and ambient air quality 18
3 Key air quality issues for the M4 East project 25
3.1 Overview of Chapter 25
3.2 Roads, tunnels and air quality 25
3.3 Sydney tunnels and air quality 27
3.4 Advisory Committee on Tunnel Air Quality 28
3.5 WestConnex Strategic Environmental Review 28
3.6 Community Feedback Report 29
3.7 Summary of key air quality issues 29
4 Regulation of emissions, air pollution and exposure 30
4.1 Overview of Chapter 30
4.2 Policies and regulations for road vehicle emissions 30
4.3 Fuel quality regulations 32
4.4 In-tunnel pollution limits 32
4.5 Tunnel portal emission restrictions 35
4.6 Ambient air quality standards and criteria 35
5 Overview of assessment methodology 40
5.1 Overview 40
5.2 Key documents, guidelines and policies 40
5.3 Consultation with government agencies and ACTAQ 41
5.4 Previous road and tunnel project assessments 41
5.5 General approach 42
5.6 Treatment of uncertainty 52
6 Existing environment 54
6.1 Overview 54
6.2 Terrain and land use 54
6.3 Climate 55
6.4 Meteorology 56
6.5 Emissions 59
6.6 In-tunnel air quality 65
6.7 Ambient air quality 65
7 Assessment of construction impacts 68
7.1 Overview 68
7.2 Construction footprint 68
7.3 Construction activities for the project 69
7.4 Assessment procedure 70
7.5 Step 1: Screening 72
7.6 Step 2: Risk assessment 72
7.7 Step 3: Mitigation 77
7.8 Step 4: Significance of risks 77
8 Assessment of operational impacts 79
8.1 Overview 79
8.2 Emissions 79
8.3 In-tunnel air quality 97
8.4 Dispersion modelling (continues in part 2) 99
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