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PROJECT CONSTRUCTION INVESTMENT MANAGEMENT
AUTHORITY PROVINCE MANAGEMENT UNIT OF DAM REHABILITATION AND SAFETY
IMPROVEMENT PHU YEN PROVINCE
REPORT ON
ENVIRONMENTAL AND SOCIAL IMPACT
ASSESSMENT
SUBPROJECT: DAM REHABILITATION AND SAFETY
IMPROVEMENT (WB8) PHU YEN PROVINCE
PROJECT: DAM REHABILITATION AND SAFETY
IMPROVEMENT (DRSIP/WB8) FUNDED BY THE
WORLD BANK
Phu Yen, January 2020
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Subproject: dam rehabilitation and safety improvement (wb8) Phu Yen province
Report environemental and Social impact assessment (ESIA) 2
PROJECT CONSTRUCTION INVESTMENT MANAGEMENT
AUTHORITY PROVINCE MANAGEMENT UNIT OF DAM REHABILITATION AND SAFETY
IMPROVEMENT PHU YEN PROVINCE
PROJECT: DAM REHABILITATION AND SAFETY IMPROVEMENT
(WB8)
REPORT ON
ENVIRONMENTAL AND SOCIAL IMPACT
ASSESSMENT
SUBPROJECT: DAM REHABILITATION AND SAFETY
IMPROVEMENT (WB8) PHU YEN PROVINCE
REPRESENTATIVE OF THE PROJECT
OWNER
REPRESENTATIVE OF THE
CONSULTANCY UNIT
Phu Yen, January 2020
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 3
LIST OF ABBREVIATIONS
AH Affected Household
CPC Communal People’s Committee
CPO Central Project Office
DPC District People’s Committee
DSR Dam Safety Report
DRSIP Dam Rehabilitation and Safety Improvement
DED Detailed Engineering Design
ECOPs Environmental Code of Practice
SA Social Assessment
EIA Environment Impact Assessment
ESMF Environment and Social Management Framework
EMDF Ethnic Minority Development Framework
EMDP Ethnic minority Development Plan
EM Ethnic minority
EMP Environement Management Plan
ESIA Environment and Social Impact Assessment
ESMP Environment and Social Management Plan
FPIC Free, prior and informed consultation
IPM Integrated Pest Management
ICM Integrated Crop Management
MARD Ministry of Agriculture and Rural Development
MCM Million Cubic Meters
MoIT Ministry of Industry and Trade
MoNRE Ministry of Natural Resources and Environment
WB World Bank
FFS Farm Field School
O&M Operation and Maintenance
OP/BP Policies of World Bank
GAP Gender Action Plan
IDA International Development Agency
RAP Resettlement Action Plan
PPC Provincial People’s Committee
PMU Project Management Unit
PMB Project Management Board
PoE Panel of Experts
PPMU Provincial Project Management Unit
PSC Project Steering Committee
SRI System Rice Intensification
TOF Training of farmers
VND Vietnamese dong
TOR Terms of Reference
UNDP United Nations Development Program
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 4
WHO World Health Organization
WUA
UXO
Water Users Association
Unexploded ordnance
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 5
TABLE OF CONTENT
LIST OF ABBREVIATIONS ................................................................................................................3
TABLE OF CONTENT .........................................................................................................................5
LIST OF TABLES .................................................................................................................................8
LIST OF FIGURES .............................................................................................................................10
SUMMARY ..........................................................................................................................................11
CHAPTER I: PROJECT INTRODUCTION ....................................................................................18
1.1. Approach and method of implementation ................................................................... 18
1.1.1. Methods of social impact assessment ...................................................................... 18
1.1.2. Environment impact assessment method ................................................................ 19
1.2. Implementation arrangement of ESIA report ............................................................. 20
CHAPTER II: DESCRIPTION OF SUBPROJECT ........................................................................22
2.1. Objective of the subproject ............................................................................................ 22
2.2. Location of subproject implementation ........................................................................ 22
2.3. Status of works and construction solutions .................................................................. 23
2.4. Summary of excavation volume, construction materials and machinery ................ 36
2.4.1. Summary of excavation volume ............................................................................... 36
2.4.2. Summary of volume of materials ............................................................................. 36
2.4.3. Mobilization of vehicles and machinery for construction ...................................... 37
2.4.4. Distance, transport route of materials ..................................................................... 39
2.5. Auxiliary items ................................................................................................................ 40
2.5.1. Electricity, water for construction and living .......................................................... 40
2.5.2. Demand for workers’ houses and camps ............................................................... 40
2.5.3. Construction route .................................................................................................... 40
2.5.4. Landfill, soil pits ....................................................................................................... 42
2.6. Pre-construction activities .............................................................................................. 44
2.7. Material transportation plan ......................................................................................... 44
2.8. Operational and maintenance activities ....................................................................... 44
2.9. Dam safety plan ............................................................................................................... 44
2.10. Subproject implementation schedule ............................................................................ 45
2.11. Cost of implementation ................................................................................................... 46
CHAPTER 3: LEGAL, ADMINISTRATIVE AND POLICY FRAMEWORK ............................47
3.1. Government Regulation ................................................................................................. 47
3.2. The World Bank’s safeguard policies ........................................................................... 50
3.2.1. Project level ............................................................................................................... 50
3.2.2. Subproject level ......................................................................................................... 50
CHAPTER 4: NATURAL, SOCIO-ECONOMIC CONDITIONS AND ENVIRONMENTAL
STATUS ................................................................................................................................................57
4.1. Natural conditions ........................................................................................................... 57
4.1.1. Geographical and geological conditions ................................................................. 57
4.1.2. Topographic and geological conditions .................................................................. 57
4.1.3. Climate and meteorological conditions ................................................................... 58
4.1.4. Hydrological conditions............................................................................................ 60
4.1.5. Biodiversity ................................................................................................................ 67
4.2. The impact of climate change on Phu Yen province ................................................... 69
4.2.1. Types of natural disasters often occur in Phu Yen province ................................. 69
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
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4.2.2. The impact of climate change on Phu Yen province .............................................. 70
4.3. Environmental status ...................................................................................................... 70
4.3.1. Quality of ambient air environment and nois ......................................................... 71
4.3.2. Environmental quality of surface water .................................................................. 71
4.3.3. Quality of groundwater environment ...................................................................... 71
4.3.4. Quality of soil environment ...................................................................................... 71
4.4. General socio-economic characteristics of sub-project areas .................................... 72
4.4.1. Socio-economic characteristics of subproject communes ...................................... 72
4.4.2. Survey result of households benefited from subproject.......................................... 80
4.5. Sensitive works ................................................................................................................ 92
CHAPTER 5: ENVIRONMENTAL AND SOCIAL IMPACT ASSESSMENT ............................95
5.1. Types and scale of impacts ............................................................................................. 95
5.2. Potential positive impacts on environment and society .............................................. 96
5.2.1. Potential negative impacts from the subproject on the social environment .......... 96
5.2.2. Assessment and forecasting of impacts during the process of preparing the subproject ................................................................................................................................. 96
5.2.3. Impact evaluation and projection during subproject construction phase ........... 106
5.2.4. Predictors of specific impacts ................................................................................. 133
5.2.5. Evaluating and forecasting of impacts during the operational phase of the subproject ............................................................................................................................... 138
5.3. Analysis of types of impact ........................................................................................... 138
5.3.1. Cumulative impacts................................................................................................. 138
5.3.2. Direct Impact ........................................................................................................... 139
5.3.3. Indirect impacts ....................................................................................................... 139
5.3.4. Temporary impact ................................................................................................... 139
5.3.5. Long term impact .................................................................................................... 139
CHAPTER VI: ALTERNATIVE ANALYSIS ................................................................................140
6.1. Without subproject ....................................................................................................... 140
6.2. The option of implementing the sub-project .............................................................. 141
CHAPTER VII: ENVIRONMENTAL AND SOCIAL MANAGEMENT PLAN (ESMP) .........145
7.1. Objectives ....................................................................................................................... 145
7.2. Mitigation measures ...................................................................................................... 145
7.2.1. Impact mitigation measures in the subproject preparation measures ................. 145
7.2.2. C Mitigation measures during construction phase ............................................... 147
7.2.3. Mitigation measures for specific impacts .............................................................. 170
7.2.4. Mitigation measured in operation phase ............................................................... 175
7.3. Implementation arrangement ...................................................................................... 176
7.3.1. Project management ............................................................................................... 176
7.3.2. Roles and responsibilities for environmental and social safeguard management177
7.4. Environmental Compliance Framework .................................................................... 181
7.4.1. Environmental tasks of the Contractor: ................................................................ 181
7.4.2. Contractor’s safety, social and environmental officer ......................................... 181
7.4.3. Social and environmental monitoring during construction phase (Monitoring Consultant) ............................................................................................................................. 182
7.4.4. Compliance with contract requirement and legal regulations ............................. 182
7.4.5. Report System .......................................................................................................... 183
7.5. Grievance redressing mechanism ................................................................................ 184
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 7
7.5.1. Complaints and complaint settlement procedures ................................................ 184
7.5.2. Contractor and construction supervision consultant: .......................................... 185
7.5.3. Grievance redressing mechanism of WB .............................................................. 185
7.6. ESMP Implementation plan ........................................................................................ 186
7.6.1. ESMP Implementation Plan of the Contractor .................................................... 186
7.6.2. Subproject commencement and personnel ............................................................ 186
7.7. Capacity development and training plan ................................................................... 186
7.7.1. Training on safety policies ..................................................................................... 186
7.7.2. Occupational health and safety training ............................................................... 187
7.7.3. Orientation of visitors ............................................................................................. 187
7.7.4. Training for new contractors and workers ........................................................... 187
7.7.5. Basic training on occupational health and safety ................................................ 187
7.8. Environmental quality monitoring plan ..................................................................... 188
7.8.1. The compliance monitoring ................................................................................... 188
7.8.2. Monitoring of environment quality ....................................................................... 188
7.8.3. Dam safety monitoring ........................................................................................... 190
7.9. Estimated cost ................................................................................................................ 190
CHAPTER VIII: COMMUNITY CONSULTATION AND INFORMATION DISCLOSURE 197
8.1. Purpose and method ..................................................................................................... 197
8.1.1. Purpose of community consultation ...................................................................... 197
8.1.2. Principles of community consultation ................................................................... 197
8.2. Consultation process ..................................................................................................... 198
8.2.1. Brief description of consultation process at commune/town level and mass organizations .......................................................................................................................... 199
8.2.2. Summary of consultations with community directly affected by Subproject ...... 200
8.3. Results of public consultation ...................................................................................... 200
8.4. Feedback and commitment of the Project Owner..................................................... 206
8.5. Information Disclosure ................................................................................................. 207
CONCLUSIONS AND RECOMMENDATIONS ...........................................................................208
Conclusion .................................................................................................................................... 208
Recommendations ....................................................................................................................... 208
REFERENCES ...................................................................................................................................209
ANNEX................................................................................................................................................210
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
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LIST OF TABLES
Table 1: The list of reservoirs under the subproject of “Dam rehabilitation and Safety Improvement
(WB8), Phu Yen province” .....................................................................................................................11
Table 2: Cost estimate for ESMP implementation .................................................................................16
Table 3: List of persons participating in implementation ......................................................................21
Table 4: Geographic location of reservoir under the subproject ..........................................................22
Table 5: Summary of some specifications of reservoirs .........................................................................23
Table 6: Summary of current information of reservoirs and construction works of the Subproject ......24
Table 7: Total volume of excavated soil and embankment soil of the subproject ..................................36
Table 8: Summary of materials volume of the subproject ......................................................................36
Table 9: list of machines and equipment for construction of subproject ...............................................37
Table 10: Distance, transport route of materials ...................................................................................39
Table 11: Expected number of workers in construction sites ................................................................40
Table 12: Volume and location of landfill, transportation routes .........................................................42
Table 13: Volume and location of soil pits during construction ............................................................43
Table14: Progress implementation of subproject ..................................................................................46
Table 15: Cost of implementation of subproject ....................................................................................46
Table 16: Summary of environmental assessment process of WB & Government .................................52
Table 17: Distribution table of air temperature characteristics ............................................................58
Table 18: Table of distribution of relative humidity characteristics (Unit:%) ......................................59
Table 19: Table of wind speed in months of the year (Unit: m/s) ..........................................................59
Table 20: The amount of evaporation of the months of the year (Unit: mm) .........................................59
Table 21: Rainfall design irrigation area ..............................................................................................60
Table 22: Average rainfall for years, months ........................................................................................60
Table 23: The watershed characteristics of the reservoirs under the subproject .................................60
Table 24: Result of calculating the annual flow characteristics ............................................................60
Table 25: Calculation table of results for the design year flow .............................................................61
Table 26: Distribution table of design annual flow ...............................................................................61
Table 27: Results table of flood peak flow calculations Qmax ..............................................................62
Table 28: Chart flood diagram of reservoirs belong subproject ..........................................................63
Table 29: Details on socio-economic conditions of subproject communes ...........................................75
Table 30: Average number of demographics participated in the survey ...............................................80
Table 31: Gender of surveyed people ....................................................................................................80
Table 32: Age of surveyed people ..........................................................................................................81
Table 33: Size of households participating in the survey .......................................................................81
Table 34: Ethnic minority composition of respondents ..........................................................................82
Table 35: Education level of surveyed people ........................................................................................83
Table 36: Occupation of the respondents ..............................................................................................83
Table 37: Total income of households in the subproject area ...............................................................85
Table 38: Type of housing of the household...........................................................................................86
Table 39: Distance from home to service points in the subproject area ................................................87
Table 40: Water source used for eating and daily activities of households ...........................................87
Table 41: State of using toilet of household ...........................................................................................88
Table 42: Gender in local community participation (%) .......................................................................89
Table 43: Division of labor by gender in production and living (%) .....................................................89
Table 44: Gender in making decision in family (%) ..............................................................................90
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 9
Table 45: Poverty situation of ethnic minority people in the districts of the subproject .......................90
Table 46: Situation of ethnic minorities in the project communes (people) ...........................................91
Table 47: Understand the nature of HIV/AIDS ......................................................................................91
Table 48: Awareness about the way of HIV / AIDS transmission ..........................................................91
Table 49: Awareness of people about HIV/AIDS (%) ............................................................................92
Table 50: Summary of the status of sensitive works ...............................................................................92
Table 51: The criteria for classification of negative impacts ................................................................95
Table 52: Sources of impact during construction preparation phase ....................................................97
Table 53: Statistics of impacts and scope of land acquisition ...............................................................99
Table 54: Summary of affected trees and crops ...................................................................................100
Table 55: Pollutant load coefficient for trucks running on roads ........................................................101
Table 56: Number of vehicles transporting luminescent vegetation ....................................................102
Table 57: Pollutant load emissions of means of transport of transportation of luminescent vegetation
..............................................................................................................................................................102
Table 58: : Pollutant load emissions of means of transport of transportation of luminescent vegetation
in 1hour ................................................................................................................................................102
Table 59: Concentrations of pollutants in the air due to transportation of luminescent plants in
reservoirs of Phu Xuan, Dong Tron, Hon Dinh, Hoc Ram and Dong Khon ........................................103
Table 60: Concentrations of pollutants in the air due to transportation of luminescent plants in
reservoirs of Gieng Tien; Ea Ddin1, Hoa Thuan .................................................................................104
Table 61: Biomass of 1m2 of vegetation type.......................................................................................105
Table 62: The amount of biomass generated during the preparation stage .......................................105
Table 63: Summary of source of impact during construction phase ....................................................106
Table 64: Aggregate volume of air and dust pollutant emission sources ............................................109
Table 65: Volume of construction materials ........................................................................................110
Table 66: Pollutant load of means of transport of transportation of luminescent vegetation in 1hour
..............................................................................................................................................................110
Table 67: Concentrations of pollutants in the air from the transportation of construction materials are
swept away by the wind ........................................................................................................................111
Table 68: Pollutant load coefficient for trucks running on roads (for 1000 km) .................................111
Table 69: Number of turns transport vehicles......................................................................................112
Table 70: Load of pollutants from cars transporting materials ...........................................................112
Table 71: Concentration of pollutants through transport of materials ................................................113
Table 72: Forecast of oil consumption in construction activities at the construction site ...................113
Table 73: Load of pollutants from machinery and equipment during construction .............................114
Table 74: Concentration of pollutants from the operation of construction machinery........................114
Table 75: Pollution emission coefficient due to construction activities ...............................................115
Table 76: The amount of dust generated by the excavation and embankment and leveling process at
the construction site .............................................................................................................................116
Table 77: D ust concentration due to operation to excavation and embankment ................................116
Table 78: Calculation results of noise level at source during construction phase ..............................117
Table 79: Forecast of noise reduction according to distance from source ..........................................118
Table 80: Vibration level decreases with the distance in construction ................................................120
Table 81: Estimates of sources of substances causing water contaminants ........................................122
Table 82: Concentration of pollutants of domestic wastewater during construction phase ................122
Table 83: Concentration of pollutants in construction waste water ....................................................123
Table 84: Predict potential soil erosion due to rain from construction items of the subproject ..........124
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 10
Table 85: Estimated volume of excavation, embankment and domestic waste generated from
subproject construction activities .........................................................................................................125
Table 86: Beneficial area and number of HHs likely to be affected due to interruption of irrigation
water supply during the subproject construction .................................................................................129
Table 87: Specific impacts of the subproject........................................................................................134
Table 88: Cost estimate for compensation and resettlement................................................................146
Table 89: Environmental code of practices (ECOP) to mitigate general impacts during the
construction process .............................................................................................................................149
Table 90: Mitigation measures for sensitive works ..............................................................................170
Table 91: General mitigation measures for impacts during operation phase .....................................175
Table 92: Roles and responsibilities of stakeholders ...........................................................................178
Table 93: Requirements on report system ............................................................................................183
Table 94: Summary of the contents of quality monitoring of environmental components in the
construction phase and operation and maintenance ............................................................................189
Table 95: Estimated costs for ESMP ....................................................................................................190
Table 96. Budget source for ESMP monitoring ...................................................................................190
Table 97: Summary of mitigation measures .........................................................................................192
Table 98: Time and location of consultation meeting ..........................................................................199
Table 99: Summary of consultation results and project owner comments ...........................................200
Table 100: Summary of consultations on environmental and social issues of affected households ....206
LIST OF FIGURES
Figure 1: Locations of subproject reservoirs .........................................................................................23
Figure 2: Map of the administrative units of Phu Yen province ............................................................57
Figure 3: Structure of environmental management and supervision organization..............................176
Figure 4: Organizational chart of subproject safeguard performance................................................177
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Subproject: dam rehabilitation and safety improvement (wb8) Phu Yen province
Report environemental and Social impact assessment (ESIA) 11
SUMMARY
1. Introduction: The project of: “Dam rehabilitation and Safety Improvement (DRSIP/WB8) funded by the World Bankwas approved by Prime Minister in accordance with the Decision No.
1858/QĐ-TTg dated 02/11/2015 and the Feasibility Study Report of the project was approved by
Minister of Ministry of Agriculture and Rural Development through Decision No. 4638/QĐ-NN-
HĐQT dated 09/11/2015.
2. Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province, PPMU issued Decision No. 61 / QD-BQL-WB8, dated 08/6/2017 on approving the plan for selecting contractors for
investment preparation phase (phase 2); No. 20 / QD-BQL-WB8, dated January 23, 2018, approving
the results of evaluation of documents presenting interest in package number C1-PHUYEN-CS1; No.
69 / QD-BQL-WB8, dated March 26, 2018, approving the results of contractor selection of package
number C1-PHUYEN-CS1: Consultancy for preparation of Feasibility Study Report and Dam Safety
Report under the Dam Safety Repair and Improvement sub-project in Phu Yen Province. Accordingly,
the subproject includes 8 water reservoirs:
Table 1: The list of reservoirs under the subproject of “Dam rehabilitation and Safety Improvement
(WB8), Phu Yen province”
No. Name of
reservoirs
Capacity
(x106 m3)
Height of
dam
(m)
Construction
level Location of the subproject
1 Phu Xuan 11.22 23.80 II Xuan Phuoc commune, Dong Xuan
district
2 Dong Tron 19.55 29.00 II An Nghiep commune, Tuy An
district
3 Hon Dinh 0.710 4.70 IV Hoa Xuan Tay commune, Dong Hoa
district
4 Gieng Tien 1.45 7.60 IV Son Ha commune, Son Hoa district
5 Dong Khon 2.716 16.20 III Hoa Xuan Tay commune, Dong Hoa
district
6 Hoc Ram 2.91 17.80 II Hoa Tan Tay commune, Tay Hoa
district
7 EaDin 1 1.45 13.00 III Ea Bar Commune, Song Hinh
District
8 Hoa Thuan 1.45 9.00 IV Son Dinh commune, Son Hoa
district
3. The status of reservoirs under the subproject “Dam rehabilitation and safety improvement (WB8) Phu Yen province: Most of reservoirs are homogeneous earth dams which have been exploited
for a long time and have not been upgraded, resulting in deterioration, damage, and weakness in
preventing flood. Main items of the works are likely to cause unsafety. In addition, most of the works
were built between 1983 and 2004 basing on hydrological documents, natural conditions, design
standards which are no longer suitable for the situation of climate change, especially the current
complex climate change. Facing with the above mentioned situation, repairing, upgrading and
ensuring of safety for the works is very necessary
Head works will be repaired and upgraded; ensure safety for reservoirs in exploitation and operation;
ensure irrigation water supply for 4,509.05 ha of agriculture land.
Status of reservoirs is presented in details in Annex 2.2.1 of this report.
4. Description of the subproject. The construction items of the subproject are implemented in 8 reservoirs, with the aim of supporting the implementation of the Program to ensure safety of reservoirs
through repair, reinforcement, upgrading of priority dams, strengthening of management capacity and
safe operation of dams to protect people specifically residence and socio-economic infrastructure in
the downstream area.
Specific objectives:
a) To secure the safety of reservoirs and key works.
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 12
b) To improve the efficiency of irrigation works in service of intensive cultivation, increase productivity and quality of products, develop specialized areas of high yielding and high
economic value, maximize potential of agricultural land in the region.
c) To reduce water loss, to ensure the water demand for people's life, the development of local industries, and socio-economic development in the subproject area in particular and Phu Yen
province in general.
d) To create natural landscapes, improve the ecological environment, promote tourism development in the region.
Construction items:
a) Repairing, upgrading soil dams, reinforcing dam crest, repairing upstream slope, downstream slope, reworking slope drainage systems and treating dams;
b) Repair, replace water intake culverts depending on the extent of damage;
c) Reinforce and renew to improve drainage capacity of spillway, it is possible to expand flood discharge spillways and overflow with surface discharge gates or self-fuse spillways;
d) Management road: Depending on the current status of each reservoir, construction of concrete pavement structure conforms to rural road standards.;
e) Renovating reservoir managers house: grade IV houses have electricity and water systems for daily life and reservoir management;
f) Monitoring equipment: To build a system of upstream and downstream water level observation posts
5. Results of environmental and social screening: The subproject is not located in or near natural habitats and there is no rare or endangered animals and plants found in the subproject area. There are
also no sensitive construction or monuments that have cultural, religious or historical significance in
and around the subproject. Regarding ethnic minorities, there are 4 communes under the subproject
that have ethnic minorities: Xuan Phuoc, Hoa Tan Tay, Ea Bar, Son Dinh, The ethnic minority groups
here are mainly Cham and Khmer. The subproject will only upgrade the dam on existing reservoirs,
which has been screened for the environment and society and determined that the subproject does not
cause significant impacts on the environment and society in the project implementation area and the
subproject is rated as category B in terms of environmental and social impacts. The World Bank
policies are triggered under the subproject including: OP/BP 4.01 on environmental assessment, OP
4.09 on pest management, OP/BP 4.37 on safety of dams, OP/BP 4.12 on involuntary resettlement;
OP/BP 4.10 Indigenous peoples, and OP/BP 4.11 Physical Cultural Resources.
6. The social and environmental impact assessment aims to identify both positive and negative impacts of the subproject, thereby proposing appropriate mitigation measures to control and manage
those impacts, in order to optimize the benefits of the subproject.
7. Social and environmental impacts of the subproject: The subproject brings both positive and negative impacts.
(a) Positive impacts:
- The subproject will repair and upgrade safety of head works of reservoirs to ensure safety for people and their assets who live in the downstream area, and communes in subproject
and residents of neighboring affected areas;
- After being implemented, the subproject will improve the storing of reservoirs, improve capacity of storing underground water in the nearby area;
- Regularly and sustainably provide irrigation water for agriculture cultivation area in the downstream area;
- Improve landscape in the reservoir area and provide habitat aquatic life.
(b) Negative impacts during pre-construction and construction phases, including:
- The implementation of the subproject will recover the productive land of the households in subproject area. The implementation of the sub-project will permanently acquired a total of
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 13
49,274.73 m2 belonged to 16 households and 5 organizations are People's Committees of
communes, in which: 2 crops Rice land: 771.29 m2, Other annual crops land: 1,533.66 m2,
Land for perennial crops: 172,35 m2, Production forest land: 19.121,96 m2, Residential land:
36,17 m2 and: 27,639.3 m2 Public land managed by the CPC includes 12.428,6 m2 Other
annual crops land and 15,146 m2 Unused hilly land and 64,7 m2 Unused land. In addition, the
project will temporarily acquired 14,500 m2 of unused land for landfill purpose.
- According to the results of consultations and interviews in the subproject localities, explosive objects have not been detected in the subproject communes. However, Phu Yen province has
repeatedly discovered explosive objects and has been handled by the authorities. According to
a report on the status of landmine and UXO contamination (Vietnam National Mine Action
Center) Phu Yen province has 9/9 districts (cities and towns) identified as contaminated with
UXO as: Tuy Hoa city, Song Cau town and districts: Dong Xuan, Tuy An, Son Hoa, Song
Hinh, Tay Hoa, Phu Hoa and Dong Hoa; A total of 113/113 communes (wards and towns)
were identified as being contaminated with UXO, accounting for 100%, UXO contaminated
area is 107,950.22 hectares, accounted for 21.4% of the province's natural area. Therefore,
UXO can be found in the construction area or the land mine, stone. In order to minimize risks,
the subproject owner should contact the competent authorities to conduct mine clearance to
assess the risk and provide confirmation of the safety of explosive objects before construction.
- Site clearance activities, create construction ground, transporting waste due to clearance of vegetation, soil stone will create impacts: Dust, exhaust gas, noise, vibration affect
construction workers, people in the subproject area; Wastewater from worker activities and
stormwater runoff with high suspended solids content due to loss of vegetation cover will
affect the quality of receiving water and soil quality in the subproject area; Solid waste of
workers and waste from clearing vegetation cover if not managed well will affect the
surrounding environment and landscape of the subproject area.
- Another activity in the subproject preparation phase is geological exploration drilling. In total, the geological survey unit has drilled 17 boreholes with the depth of 11-40m at the subproject
locations (Specific positions are presented in the feasibility study report of the subproject) to
understand geological conditions and aquifer characteristics, at the same time conducting
geophysical karota in the borehole, If the drilling process is not handled properly, it will affect
the quality of groundwater sources due to the infiltration of pollutants through boreholes to
groundwater.
- The impacts related to construction activities such as noise, vibration, air pollution due to dust and emissions, water pollution, waste, plant and animal ecosystems, social risk due to site
clearance and construction affecting traffic safety, community infrastructure, risk of accidents,
community conflict and infectious disease and disruption of business activities have been also
determined and assessed in the report. Moreover, during the construction process, it may be
blocked water source to construct the works of the subproject which may affect productivity
and water resource serving agriculture of 7 communes in the subproject area. The works of the
subproject are scattered in the 7 communes of 6 districts and the implementation location is
mainly on agriculture land which is far from residential and important areas and does not
affect forestry land; therefore, the negative impacts of the subproject are assessed at low to
average level and can be controlled by a suitable management plan. However, there are still
long term impacts on the subproject area such as land mine and dumping sites which can cause
degradation of agricultural land, unused hill land, and vacant land within the temporarily
borrowed land of localities in the subproject area during the process of using.
(c) Negative impacts during the operational stage:
- Dam safety risks can occur in the event of a broken dam or flood discharge causing flooding downstream; Accident related to drowning;
- Domestic waste from eco-tourism activities in some reservoirs has developed this type of service;
- The implementation of the subproject does not increase the capacity of the reservoir, does not increase the irrigated area in the downstream area and does not affect the crop structure in the
subproject area. However, the repair of the culverts has been damaged and the leakage of
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 14
water will be overcome to ensure more stable irrigation water regulation and will provide
adequate irrigation water for the subproject area in the drought season, restore the volume and
initial irrigated area of the reservoir, At that time, the cultivation of agricultural crops for areas
that lack water in the drought season will be restored, on the other hand, when there is enough
irrigation water and water is frequently circulated, it leads to changes in living environment,
creating conditions for harmful organisms and plants to grow, This is also the cause of
outbreaks of diseases and pests for agriculture. Therefore, it will increase the number of
pesticides and fertilizers in the area of water shortage and increase the pest in the subproject
area. On the other hand, the use of chemicals to kill termites in the dam body if not well
managed also affects the surrounding environment if due to residue and disposal is not in the
right place or termite-killing chemicals are swept away by rainwater. Therefore, an integrated
pest management (IPM) plan for this subproject is required;
- During maintenance, repairs can stop provision of irrigation water temporarily affecting production and livestock of downstream people..
8. Mitigation measures for impacts: To manage these impacts, an Environmental and Social Management Plan (ESMP) has been prepared as an integral part of this ESIA report with proposed
institutional arrangements for impact management, environmental management and monitoring,
reporting requirements, capacity building, budgeting for implementation. The social assessment report
(SA) is made to aim at the following objectives: (i) Identify social issues and potential impacts of
proposed infrastructure investment items, (ii) Provide input of social aspects and participation in the
feasibility study project design and basic design phase, paying attention to the needs of affected
communities, (iii) Provide specific recommendations on infrastructure investment management with
high social risks and identify criteria and methodologies to determine whether the investment is
socially acceptable or not, (iv) The study provides a basic source of data for evaluating project
completion results. A separate Resettlement Action Plan/Compensation and Resettlement plan has
been prepared to deal with the impacts of land acquisition.
Preparation phase:
- Implement RAP; SA.
- Integrating environmental mitigation measures into technical design.
- Consult people about the actual time of repairing dam with purpose of mitigating impacts of three phases: preparation, construction of subproject and operation of subproject.
- Demining and demining should be carried out strictly and fully in the subproject implementation area. It is necessary to hire a unit with full functions and tasks of according to
state regulations.
- During the geological exploration drilling process, it is necessary to strictly follow exploration drilling techniques. The boreholes need to be backfilled ensuring no spillage of pollutants to
the drilled hole and infiltrationinto the aquifer.
- Waste from the site clearance process has a small quantity but needs to be transported in the right place or coordinate with the local authorities to handle the regulations..
- Putting provisions on implementing mitigation measures into construction bidding documents and construction contracts.
Construction phase:
- Require contractors to strictly and fully implement mitigation measures for the impacts mentioned in the Environmental and Social Impact Assessment Report, social impact
assessment report of the subproject and negative impacts during construction phase will be
minimized through ECOPs and mitigation measures for site-specific impacts.
Operation phase:
- During the operational process, the upgraded and repaired items of the subproject such as: anti- seepage on dam body, treatment of loss of water due to damaged items will improve the
capacity of storing of water and ensure the capacity of regulating water through repairing of
intake. Thus, it will increase irrigation area that has been not provided enough for designed
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 15
irrigation area because of losing water of reservoirs. Therefore, introduction and promotion of
application of integrated pest management in the areas of irrigation services are necessary.
- PPMU frequently monitor to ensure that the damaged structures will be repaired and restored in accordance with approved dossier. Reservoir management units regularly check dam safety,
patrol the Reservoir area to avoid drowning accidents; forecast and warning to authorities and
people when there are extreme weather phenomena; Regularly collect garbage at the reservoir
area, for reservoirs operating in tourism business, there must be garbage bins and coordinate
with garbage collection units in localities to collect daily. On the other hand, the PPMU and
the reservoir management and operation units must coordinate with the local authorities to
carry out the training on emergency response plans for local authorities and local people..
- For the impact of increased use of pesticides, agencies: Plant Protection Department of Phu Yen province; Plant Protection Station of districts under the subproject; and the People's
Committee of 7 communes under the subproject must comply with the contents of the Pest
Management Plan (IPM) of this subproject. In addition, farmers in the process of cultivation
need to select good varieties, regularly check pests and diseases, use pest control measures
recommended in the pest management plan (IPM) such as: (i) Cultivation measures: Soil
preparation, field cleaning; rotation, intercropping; proper time; sowing and planting
reasonable density; use fertilizer properly; Appropriate care measures (ii) Use of breeds:
Traditional varieties and proposed varieties suitable for local conditions (iii) Biological
measures: taking advantage of using natural enemies available in the field, using bioproducts
…(iv) Chemical measures: use safe pesticides with natural enemies; follow economic
threshold ... Follow safety guidelines on pesticide storage, transportation and use to minimize
negative environmental and health impacts...
9. Preparation of a report on environmental and social impact assessment. The subproject is designed and implemented in accordance with the DRSIP project's Environmental and Social
Management Framework (ESMF) approved by WB, and also ensure compliance with the current
environmental regulations of the GoV. The purpose of the Environmental and Social Impact
Assessment Report is to determine the importance of environmental and social issues in the decision-
making process by clearly assessing the environmental and social consequences of proposed research
before the implementation of subproject activities. Early identification and characterization of the
positive and negative environmental and social impacts that help the community and local have an
assessment of the subproject's environmental and social impacts propose conditions to be applied to
mitigate or mitigate risks to those impacts. Activities in the preparation, construction and operation of
the subproject are analyzed, evaluated and given solutions to prevent and minimize the level of
impacts on the environment and living of the residents direction. Results of screening of 8/8 reservoirs
all meet the criteria of the project and subproject is classified as category B in terms of environment
assessment. The subproject triggers 04 safeguards policies, including: OP/BP 4.01 on environmental
assessment, OP 4.09 on pest management, OP/BP 4.37 on safety of dams and OP/BP 4.12 on
involuntary resettlement.
10. Institutional Arrangements: The Ministry of Agriculture and Rural Development (MARD) is responsible for implementing and managing the entire project. Provinces that perform repairs to dams
in Component 1 and MARD will coordinate activities with the Ministry of Industry and Trade and the
Ministry of Natural Resources and Environment in Component 2. Central Management Board
(CPMU) under MARD is responsible for coordination and overall monitoring of the project. The
implementation of repairs and preparations for the dam safety plan, including protection and
entrustment, is focused on provincial authorities. Provincial People's Committee is the chair of the
provincial level. The Provincial Project Management Unit (PPMU) is responsible for managing and
monitoring the works with support from CPMU. Management Unit of Dam rehabilitation and Safety
Improvement (WB8), Phu Yen province (hereinafter referred to as PMU) responsible for
implementing and monitoring implementation ESIA. The PMU ensures that documents and contracts
for valid bidding include environmental provisions for contractors to comply with. The contractor will
carry out construction activities and comply with the environmental agreements agreed in the contract.
In particular, the contractor will prepare an Environmental and Social Management Plan for the PMU
to review and approve before starting construction. PMU and consultants will closely monitor
compliance with contractor's agreed mitigation measures. In addition, the contractor's compliance will
be closely monitored by Department of Natural Resources and Environment of Phu Yen province,
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 16
local authorities and people.
11. Capacity building: During the implementation process, PPMU receives support from CPMU on the World Bank's environmental safety policy. The PPMU's safety policy staff has been trained by
CPMU in coordination with the World Bank experts to guide the project's environmental safety issues
and World Bank's safety policies. related to the project implementation included: OP 4.01
(Environmental Assessment), IFC's General Guide to Environment, Health and Safety (EHS), OP 4.04
(Natural Habitats), OP 4.10 (Indigenous peoples) and OP 4.12 (involuntary resettlement)…
12. During the implementation of the subproject, training and training on environmental safety policies for Construction Supervision Consultant (CSC) and EHS staff of the contractor are carried out
regularly to update the relevant information. For PPMU, during the implementation of the subproject,
the subproject will receive regular support from CPMU's independent consultancy and technical
assistance on the management of dam safety risk issues, monitoring the implementation of the ESMP.
13. Public consultation: The subproject has applied different methods and techniques to conduct public consultations, consultations with people affected and local NGOs by the subproject, including
a) community meetings, b) household survey, c) focus group discussion, field investigation and
interviewing people providing key information. The use of these methods and techniques to enhance
the reliability and effectiveness of feedback from the subproject stakeholders, Especially the local
people are affected and make sure that (i) Affected people receive full information about the
subproject; and (ii) All affected people are involved in the process of freedom consultation, advance
notice and provide complete information during the preparation and implementation process. In
September 2018, the sub-project management board organized a total of 7 community consultation
meetings in the sub-project communes. And there have been official documents sent to the People's
Committees of 7 communes under the subproject to community consultation on environmental and
social protection issues during the subproject implementation process. Participants in community
consultation sessions are representatives of local units and organizations such as: representative offices
of People's Committees, in charge of neighborhoods, veterans' associations, women's union, youth
union, the eldly group ... and representatives of affected households.
14. Cost estimation for ESMP implementation: ESMP implementation cost estimate includes costs for ESMP monitoring, mitigation measure implementation and capacity building. Mitigation measure
implementation cost shall be included in the construction cost. The following table presents cost
estimates for monitoring and capacity building.
Table 2: Cost estimate for ESMP implementation
No. Cost item Amount (VND) No.
1 Costs for environmental monitoring VND 685,115,631.2
2 Cost of capacity building training VND 102,000,000 3 Costs for environmental treatment works VND 226,000,000 4 Cost for IPM program VND 82,250,000 5 Contingency (10%) VND 109,536,563.12 6 Total VND 1,204,902,194.32
Grievance Redress Mechanism (GRM): Complaints related to the subproject will be resolved by
negotiating to get an agreement with the people. Complaints will be negotiated by the parties at all
three stages (People's Committee at commune, district and provincial levels) before submitting to the
court in accordance with the 2011 Complaint Law. PPMU will pay all administrative and legal costs
related to the receipt of the complaint because this payment cost is included in the subproject budget.
15. Information dissemination: In compliance with policy of OP 4.01 and policies of World Bank on access to information: from the stage of preparing the subproject, relevant information has been
disseminated to community through mass media. PPMU disseminated information and directly
consulted community in September 2018 and sent consultation information to local organizations. The
draft of ESIA in Vietnamese was sent to CPCs to disseminate information and consult in October
2019. The final version is expected to be disclosure in August 2019 through the website of CPO and
website of the Bank in English before appraisal of the subproject.
16. Conclusion: Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province may have negative impacts in the subproject phases, but due to the small scale of construction items,
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 17
impacts will occur in a short time, The scope in the area is small and insignificant, so the sub-project
has proposed feasible mitigation measures, suitable to the natural, socio-economic conditions and the
conditions of subproject management and construction at localities.
17. The Environmental and Social Monitoring and Management Plan is set up to monitor impacts, to help stakeholders and local authorities to regularly update the implementation process of subproject
items. The monitoring system is prepared and approved by the WB will apply in the implementation
of subproject, construction supervision consultants regularly check and prepare monthly reports to
submit PPMU.
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Subproject: dam rehabilitation and safety improvement (wb8) Phu Yen province
Report environemental and Social impact assessment (ESIA) 18
CHAPTER I: PROJECT INTRODUCTION
18. The Government of Vietnam received a credit from International Development Agency (IDA)/ World Bank (WB), via Loan Agreement No.5749-VN signed on 8 April 2016 for financing Dam
Rehabilitation and Safety Improvement Project. The project is implemented from 8 July 2016 until 30
June 2022.
19. The WB funded Dam Rehabilitation and Safety Improvement Project (DRSIP/WB8) was endorsed by the Prime Minister in the project list “dam rehabilitation and safety improvement” in Decision
No.1858/QD-TTg dated 2 November 2015 and the Project Feasibility Study Report was approved by
Minister of Agriculture and Rural Development in Decision No. 4638/QD-NN-HDQT dated 9
November 2015.
20. The project has 03 components and total investment cost of USD 443 million, including USD 415 million of ODA loan from WB and USD 28 million of counterpart fund. The funding allocations to
Component 1, 2 and 3 are USD 412 million, USD 20 million and USD 11 million respectively.
- Component 1: Dam safety rehabilitation, budget: USD 412 million.
- Component 2: Dam safety management and planning, budget: USD 20 million.
- Component 3: Project management support, budget: USD 11 million.
21. The project is implemented in three regions: i) Northern region covering the whole Red River Delta; ii) Central Region covering Central Northern and Middle areas and Central Southern coastal
areas; and iii) Central Highlands area. These are regions with a large number of dams which were built
a long time ago, have rarely received investments for big repair or rehabilitation while being
vulnerable to natural disasters and subject to dam safety incidents.
22. The project shall assist to restore structure of the existing irrigation dams, most of which were built in the 1980s and 1990s. About 90% of the dams proposed to be rehabilitated are earth and small
ones with height lower than 15m and design capacity of smaller than 3 million cubic meters (MCM).
The proposed project will not support to change the structure or expand the dam for safety securing.
Rehabilitation shall be limited to restoring structure of main and auxiliary dams, stabilizing dam
slopes with concrete slabs or stone paving, strengthening and expanding the existing spillways to
increase discharge capacity, renewing the existing intakes, replacing equipment and power system of
the outlet/discharges and controlled spillway, uniting for leakage control and current access road
improvement.
1.1. Approach and method of implementation
23. The Environmental and Social Impact Assessment (ESIA) was implemented in accordance with World Bank safeguard policies and in accordance with the Environmental and Social Management
Framework approved by the World Bank. The ESIA process have been carried out in accordance with
the initial screening process to classify the magnitude of the subproject's environmental and social
considerations, impact assessments, propose mitigation measures and establish implementation plan.
And the consultation with stakeholders and information disclosure were also mainstreamed in this
process. In addition, ESIA is also implemented in accordance with the guidelines of relevant safeguard
policies of the World Bank and regulations of the Government of Vietnam. The purpose of
implementing ESIA is to determine the scope, extent and importance of the environmental and social
issue of the implementation of the project, being suitable with the nature, activities and characteristics
of the subproject area to propose management plan and suitable implementation institution to propose
the positive effects and control negative impacts as well as risks from the subproject.
1.1.1. Methods of social impact assessment
24. Social assessment (SA), which is implemented in parallel with environmental assessment of the sub-project, has two objectives: First, to review potential and negative impacts of sub-projects on the
basis of sub-project implementation plans, and second, to seek potential negative impacts from
designing solutions and proposing community development activities that are relevant to the
development objectives of the sub-project. Identification of negative impacts, and consultations with
localities, Government agencies, project stakeholders, etc. will be undertaken to ensure that affected
people are compensated and supported in a satisfactory and timely manner so that at least their socio-
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 19
economic activities are recovered to a level equivalent to that before the project implementation and,
in the long term, their livelihoods will not deteriorate, as a result of the sub-projects.
25. A part of the social assessment is ethnic minorities (EM) living in the sub-project area - they are assessed and confirmed their presence in the sub-project area through the screening of ethnic
minorities (according to OP 4.10 of the Bank), the people will be informed prior to consultations in an
appropriate manner to determine the support to the community when implementing the sub-project.
Ethnic minority screening is implemented in accordance with the World Bank's OP 4.10 guidelines,
and is conducted within the scope and area of social assessments corresponding to the scope of the
environmental assessment (OP 4.01).
26. A Gender analysis is also implemented as part of the SA to describe gender characteristics in the sub-project area, enabling the integration of gender issues into promoting gender equality and further
enhancing the effectiveness of developing the sub-projects in particular, and the whole project in
general. Depending on the size of the Project's potential impacts, which have been identified, and the
project development objectives, a gender action plan and a monitoring plan for gender action plan
have been prepared.
27. To ensure that all potential impacts can be identified during project preparation, SAs are conducted through consultations with various sub-projects stakeholders. An important part of concern
is households, who are potentially affected by the Project (both positively and negatively). The
techniques used to make an SA include (i) reviewing secondary data, (ii) field observations; (iii) focus
group discussions/ community meetings, (iv) in-depth interviews, and (v) household surveys.
1.1.2. Environment impact assessment method
28. During the research, survey and preparation of ESIA report, the consultant team used a combination of the following research methods.
(1) Rapid Assessment Method
29. The Rapid Assessment Method was issued by the World Health Organization (WHO) in 1993. The rapid assessment method is based on the nature of materials, technology, the rules of natural
processes and experience to determine the pollutant load.
30. In Vietnam, this method has been introduced and applied in many ESIA studies, which performs relatively accurately the calculation of pollutant load under limited conditions of instrumentation and
analysis. In this report, the pollutant load coefficients are taken from the WB's Environmental
Assessment Sourcebook (Environmental Assessment Sourcebook, World Bank, Washington D.C,
August 1991).
(2) Impact matrix method
31. The correlation between the impacts of the project activities on each issue and each environmental component are build and shown in the impact matrix. Based on that, impact studies will be focused on
details.
(3) Comparative method
32. The comparative method is used to evaluate the environmental quality, effluent discharge quality, pollutant load, etc. on the basis of comparison with relevant environmental regulations and standards,
regulations specified by MONRE and MOH, as well as related research and experiment topics.
(4) Description of environmental system
33. Project components that affect the environment are identified. And waste streams and related environmental issues are also fully identified for detailed assessment.
(5) Listing method
34. This method has been used extensively (since the National Environmental Protection Agency - NEPA has been established in some countries) and yielded positive results because of its many
advantages, such as clear approach, acute system during system analysis and evaluation. There are two
main types of listing: one type is a listing table describing environmental components to be studied
and information on measurement, prediction and evaluation, and another type is a simple listing table
consisting of environmental components to be studied that are potentially impacted.
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 20
(6) System analysis method
35. This method is applied quite extensively in environment sector. The advantage of this approach is the comprehensive assessment of impacts, which is very useful in identifying impacts and sources of
wastes. This method is applied on the basis of considering sources of wastes, sources of impacts,
affected objects, environmental components, etc. as elements in a system that are closely related to
each other. From there, the impacts will be identified, analyzed and evaluated.
(7) Community consultation method
36. This method is used during interviews with local leaders and people to collect necessary information for the Project's ESIA work and present benefits and possible negative impacts of the
Project to the environment and people's life. Based on that, feedback on the project and local people's
wishes will be aggregated.
37. In addition, local officials and local people will be exchanged and interviewed about socio-economic development situation, cultivation customs and environmental sanitation.
(8) Methods of reference, collecting and analyzing information and data
38. This method aims at identifying and assessing natural and socio-economic conditions in the project area through the data and information collected from different sources such as statistical
yearbooks, reports on socio-economic situation of the area, current status of the environment and
relevant research works.
(9) Field survey method
39. Field survey is required when carrying out the assessment of social and environmental impacts to determine the current status of the project area, related objects, and surveys to select locations for
collecting samples, survey of water supply, drainage, electricity supply, etc.
40. The consulting firm has carried out topographical and geological surveys and collected hydro-meteorological data for design in accordance with the current standards of Vietnam. These survey
results are used to assess the natural condition of the sub-project area.
(10) Expert panel method
41. This method is carried out based on the knowledge and experience of environmental science of environmental impact assessment experts from the consulting firm and other scientific research
agencies.
(11) Sampling and analysis method in the laboratory
42. Sampling and analyzing environmental components (soil, water, air) are indispensable in identifying and assessing the quality of the background environment in the sub-project area.
43. After the field survey, the sampling and analysis program will be developed with the following main contents: sampling locations, measurement and analysis parameters, necessary equipment and
tools, implementation time, sample preservation plan, analysis plan, etc.
44. For Phu Yen sub-project, the consultant coordinated with the Environmental Monitoring Agency to monitor, collect and analyze samples of air, water and soil in the area of seven reservoirs to evaluate
the quality of environment components. Collecting, analyzing and preserving samples are carried out
in accordance with current Vietnamese standards.
1.2. Implementation arrangement of ESIA report
a. Management of the subproject
- Management unit of dam rehabilitation and safety improvement Phu Yen province;
- Represent: Mr.Cao Dinh Huy – Position: Director
- Address: No. 112 Le Trung Kien, Ward 1, Tuy Hoa City, Phu Yen Province
- Phone: 0257.3843921 - Fax: 0257.3818255
b. Consultancy unit establishing report ESIA
- Thang Long infrastructure technology construction consultant joint stock company.
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 21
- Represent: Mr. Tran Trung Kien - Position: Director.
- Address: No 72/1/4, nest 4, Giap Nhat, Nhan Chinh ward, Thanh Xuan, Ha Noi.
- Phone: 024.3575 6806 - Fax: 024.3575.6806
c. Coordinating unit to implement environmental monitoring:
- Thai Duong environmental treatment and monitoring joint stock company
- Address: No. 24, Lane 18, Phan Van Tri Street, Quoc Tu Giam Ward, Dong Da District, Hanoi City
- Phone: 024 3573 7766 Fax: 024 3577 3403
- Certificate of Eligibility for Environmental Monitoring Service No.: VIMCERTS 163 issued in accordance with Decision No. 194 / QD-BTNMT dated 13/5/2016 of the Minister of
Natural Resources and Environment on the certificate of eligibility event of environmental
monitoring service..
d. List of participants in the preparation of ESIA reports
- Participants in the preparation of ESIA reports include: managers, specialized staff of the subproject owner and consulting unit included:
Table 3: List of persons participating in implementation
No. Full name Degree Position
1 Vu Kieu Thu Master Team leader / Environmental specialist
2 Le Thi Nhan Master Environmental Specialist No.01
3 Nguyen Hoài Nam Doctor Environmental Specialist No.02
4 Duong Thi Phuong Thuy Master Ecology specialist
5 Nguyen Ngoc Hop Bachelor Support staff
6 Duong Thi Van Huong Bachelor Support staff
7 Truong Xuan Truong Master Vice-team - Social expert
8 Quach Thi Xuan Doctor Expert on community development and policy
institutions
9 Phi Thi Hanh Bachelor Support staff
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 22
CHAPTER II: DESCRIPTION OF SUBPROJECT
45. Subproject: dam rehabilitation and safety improvement (wb8) Phu Yen province under the project of dam rehabilitation and safety improvement, WB8 is financed by the World Bank through the Credit
Agreement No. 5749-VN dated on 08th April, 2016 with the subproject implementation duration from
2017 to 2022. Based on Decision No. 4638 / BNN-HTQT dated 09th November 2015 by Ministry of
Agriculture and Rural Development, the Dam rehabilitation and Safety improvement subproject in
Phu Yen province is implemented in 07 communes under 6 districts: Tuy An, Dong Xuan, Đong Hoa,
Song Hinh, Tay Hoa, Son Hoa.
2.1. Objective of the subproject
a. Objective of the project:
46. Support to implementation of program to ensure safety of water reservoirs through rehabilitation and upgrading of prioritized dams, strengthening management capacity and safe operation of dam to
protect population and economic - social infrastructure in downstream area.
b. Specific objectives:
- Ensuring safety for reservoirs of Dong Tron, Phu Xuan, Dong Khon, Ea Din1, Gieng Tien, Hoc Ram, Hon Dinh and Hoa Thuan;
- Ensuring safety and serving production and life for people in the downstream area, including communes of An Nghiep, Xuan Phuoc, Hoa Xuan Tay, Ea Bar, Son Ha, Hoa Tan Tay, Son
Dinh and residents of the surrounding areas are affected;
- Ensuring proper implementation of the Ordinance on protection of irrigation works;
- Solidifying the dam surface, the road surface to the dam, installing monitoring and supervision equipment to facilitate the exploitation, management and promotion of the efficiency of the
reservoir;
- Improving environmental landscape, creating infrastructure for economic development in the subproject area.
2.2. Location of subproject implementation
47. Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province consist of 08 works at the following locations:
Table 4: Geographic location of reservoir under the subproject
No. Name of
reservoirs
Geographical location
Commune District Coordinates
1 Dong Tron An Nghiep Tuy An Main dam route with coordinates:
13°16'24.84" N and 109° 9'48.32" E.
2 Phu Xuan Xuan
Phuoc Dong Xuan
Main dam route with coordinates:
13°17'18.63" N and 109° 2'16.13" E.
3 Dong Khon Hoa Xuan
Tay Dong Hoa
Main dam route with coordinates:
12°55'29.52" N and 109°19'46.14" E.
4 EaDin 1 Ea Bar Song Hinh Main dam route with coordinates:
12°56'24.76" N and 108°50'13.93" E.
5 Gieng Tien Sơn Ha Sơn Hoa Main dam route with coordinates: 13°
2'58.11" N and 109° 1'16.05" E.
6 Hoc Ram Hoa Tan
Tay Tay Hoa
Main dam route with coordinates:
12°56'18.26" N and 109°16'53.98" E.
7 Hon Dinh Hoa Xuan
Tay Dong Hoa
Main dam route with coordinates:
12°55'15.42" N and 109°20'30.10” E.
8 Hoa Thuan Son Dinh Son Hoa Main dam route with coordinates:
13°12'15.04" N and 109° 2'53.20" E.
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 23
Figure 1: Locations of subproject reservoirs
2.3. Status of works and construction solutions
48. Some of the main specifications of the construction under the subproject are summarized in the following table.
Table 5: Summary of some specifications of reservoirs
No. Name of
reservoirs Commune
Basin
area
(km2)
Capacity
(106 m3)
Length of
soil dam
(m)
Height of
dam (m)
1 Dong Tron An Nghiep 69.5 19.55 270 29
2 Phu Xuan Xuan Phuoc 126 11.2 516 23.8
3 Dong Khon Hoa Xuan Tay 7.51 2.72 303.86 16.2
4 EaDin 1 Ea Bar 4.5 1.05 147 13
5 Hoc Ram Hoa Tan Tay 6.81 2.91 256 17.8
6 Hon Dinh Hoa Xuan Tay 6 0.71 375 4.7
7 Gieng Tien Son Ha 3 0.55 317 7.6
8 Hoa Thuan Son Dinh 2.06 0.47 200 9
49. Information on the current status of reservoirs and construction items of the subproject is presented in the following table:
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Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 24
Table 6: Summary of current information of reservoirs and construction works of the Subproject
Location Current status Construction works Pictures 1. Dong
Khon
reservoir
1. Main dam - The dam surface is soil, has not been
reinforced, so it often erodes;
- There are 12 termite nest on the dam body (01 upstream and 11
downstream);
- The downstream slope has appeared seeping through the soil dam causing
muddy, erosion slope, unsafe for
works;
- The dry masonry layer is used for to reinforce the upstream slope, has
been peeled, concave convex and
landslide;
- The grass protecting downstream slope has been damaged and
drainage ditch on the slope is not
existing;
- Downstream drainage pipes have been damaged, eroded, filled with
sand and sediments;
- There is no monitoring device at the dam body.
2. Spillway: - Through actual survey, the spillway
still works normally. Therefore, it is
not necessary to repair
3. Intake: - Bearing intake appeared vertical
seepage phenomenon from
upstream to downstream;
- The operation mechanics of upstream flat valves has been badly
damaged, Operation is difficult and
not watertight, there is no van house.
1. Main dam - Seepage treatment for dams and background
by inclined wall, tray foot.
- Upstream slope: Reinforced with on-site M200 pour concrete slabs, dimension of (2x2)m,
12cm thickness with drainage holes,
underneath the cement bag lining prevents loss
of cement mortar water, followed by a layer
macadam of 10cm thickness, bottom lined
geotextile layer.
- Downstream slope: anti-erosion by growing grass, grass plots (5x5m) with drainage
ditches, Slope coefficient m = 2.75.
Embankment at the slope of the dam foot
creating banquette at elevation 15.0m, wide
B=15.0m. Downstream drainage by the
downstream slope sand filter, Drainage in
downstream area by sand filter combining with
dry masonry, elevation of drainage in
downstream +14,00m + 14.00m, embankment
downstream slope by stone do not use mortar
at the downstream of the dam at + 10.30m
elevation.
- Dam crest: Concrete M200, 2x4cm stone with thickness of 20cm, Curb side downstream with
concrete M200, upstream is a wave breakwater
made of concrete M200, high 0.75m, thickness
of 0.5m.
2. Spillway - On the basis status of spillway and calculation
of hydrology and structure of spillway, it
ensures the stability. Therefore, the proposal
keeps status of the old spillway.
3. Intake - Prolonged the intake pipe with reinforced
Status of Main dam, Dong Khon reservoir
Overflow threshold, spillway and energy consumption
tank Dong Khon reservoir
-
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 25
Location Current status Construction works Pictures 4. Management road: - Management road to works length L
= 2.300m by soil, often muddy,
eroded, very difficult to travel in the
rainy season, making it difficult to
manage and operate the project
5. House under management - There are currently no house under
management
concrete M300 toward downstream, Combined
energy dissipitation’s tank beyond the intake.
Build houses to cover the intake tower valves
and build railing of the bridge connected to
house to cover the intake tower valves .
4. Management road: - Construction management road and operation
of the works, serial from the end of the
existing concrete road to the dam foot of the
Dong Khon reservoir.
- Total length of road L = 2,241.60m. - Width of road surface B = 4m including
concrete 3m wide and 02 road curb is made of
soil each side 0.5m. The structure of M250
cement concrete road is 18cm thickness,
plastic tarpaulin lining below. The concrete
road surface is divided into 5m long sections,
with elastic slot.
5. House under management: - Combining the construction of intake operating
space to do House under management
Status of intake, Dong Khon reservoir
Status of Management road, Dong Khon reservoir
2. Dong Tron
reservoir
1. Main dam - The dam surface is made of
concrete, not damaged;
- Soil dam at the left shoulder position of the spillway was infiltrated,
causing water to accumulate in the
downstream slope. The length of the
permeable section is ab