국가전략정보포털

Title page

Contents

Executive summary 7

1. Introduction 10

2. Collecting field evidence: step-by-step approach to prioritising local action in cities 11

2.1. Understanding the city 11

2.2. Collecting information on local polluting sources 12

2.3. Quality control of field reconnaissance survey 15

2.4. Identifying pollution hotspots using survey results 18

2.5. Limitations of the methodology 20

3. Recommendations 21

4. Conclusion 22

Annexure 1: List of information collected in the survey 24

Annexure 2: Information on dispersed air pollution sources, details, and spatial data type collected for each source 24

Annexure 3: Detailed cost breakup of field reconnaissance survey 25

Acronyms 26

References 26

Table 1. Gaining Insight into the City through gathering background Information 12

Table 2. Survey specs: stages in survey design, preparation, and execution 14

Table 3. Ranking the top 10 wards based on their Composite Ward Score - Prioritisation for immediate action 20

Figure 1. A comprehensive route plan for field reconnaissance covering primary, secondary and tertiary roads with start and end point 13

Figure 2. CEEW expert guiding enumerators on how to find and record 17 distinct dispersed pollution sources using ODK app 14

Figure 3. Insufficient spatial coverage in ward's pollution source recording: qa/qc reveals spatial coverage metric below 75% by one field staff 16

Figure 4. High spatial coverage achieved by one field staff while capturing pollution sources in a ward, meeting QA/QC standards with over 85% coverage metric 16

Figure 5. Route plan of the ward marked with numbered (black) and starred (blue) points for efficient navigation 16

Figure 6. Maintaining field surveyor gps location accuracy within 8 metres through qa/qc protocol under two consecutive days 17

Figure 7. Using Google satellite imagery to rectify a construction source's misplaced polygon mapped by field staff while recording the source 18

Figure 8. Recognising and addressing observational bias in capturing the pollution sources to minimise obeservational bias 19

Annexure Tables

Table A1. Detailed outline of the survey questions and description 24

Table A2. Detailed information on the dispersed pollution sources 24

Table A3. Expenditure range for City 〉 100 and 〈 200 sq.km area 25

Table A4. Expenditure range for City 〉 200 and 〈 300 sq.km area 25

Table A5. Common expenditure 25