Report Environmental and Social Impact Assessment

PEOPLE’S COMMITTEE OF LAM DONG PROVINCE PROJECT MANAGEMENT UNIT FOR AGRICULTURE AND RURAL DEVELOPMENT WORKS OF LAM DONG PROVINCE ------

Public Disclosure Authorized

REPORT

Public Disclosure Authorized ENVIRONMENTAL AND SOCIAL IMPACT ASSESSMENT

SUB-PROJECT: DAM REHABILITATION AND SAFETY IMPROVEMENT (WB8) IN LAM DONG PROVINCE UNDER THE PROJECT: DAM REHABILITATION AND

Public Disclosure Authorized SAFETY IMPROVEMENT (DRSIP/WB8) FUNDED BY WORLD BANK

Public Disclosure Authorized

Lam Dong, October 2019

PEOPLE’S COMMITTEE OF LAM DONG PROVINCE PROJECT MANAGEMENT UNIT OF AGRICULTURE AND RURAL DEVELOPMENT WORKS IN LAM DONG PROVINCE ------

REPORT ENVIRONMENTAL AND SOCIAL IMPACT ASSESSMENT

SUB-PROJECT: DAM REHABILITATION AND SAFETY IMPROVEMENT (WB8) IN LAM DONG PROVINCE

UNDER THE PROJECT: DAM REHABILITATION AND SAFETY IMPROVEMENT (DRSIP/WB8) FUNDED BY WORLD BANK

REPRESENTATIVES OF THE PROJECT REPRESENTATIVES OF MANAGEMENT UNIT OF CONSULTANTS JOINT VENTURE OF AGRICULTURE AND RURAL DEVELOPMENT WORKS OF LAM E.P.C AND LHC DONG PROVINCE

Lam Dong, October 2019

ABBREVIATIONS

AH Affected Household CPC Communal People’s Committee CPO Central project office DPC District People’s Committee DRSIP Dam Rehabilitation and safety improvement project DSR Dam Safety Report ECOPs Environmental Codes of Practice EIA Environment Impact Assessment EM Ethnic minority EMDF Ethnic Minority Development Framework EMDP Ethnic minority Development Plan ESIA Environmental and Social Impact Assessment ESMF Environement and Social Management Framework ESMP Environmental and Social Management Plan FFS Farm Field School GAP Gender Action Plan HH Household IDA International Development Agency IPM Integrated Pest Management MARD Ministry of Agriculture and Rural Development MCM Million Cubic Meters MoNRE Ministry of Natural Resources and Environment O&M Operation and Maintenance OP/BP Policies of World Bank PMB Project Management Board PMU Project Management Unit PoE Project of Expertise PPMU Provincial People’s Committee PPMU Provincial Project Management Unit PSC Project Steering Committee RAP Resettlement Action Plan SRI System Rice Intensification TOF Training of farmers TOR Terms of Reference UNDP United Nations Development Program VND Vietnamese dong WB World Bank WHO World Health Organization WUA Water Users Association

TABLE OF CONTENTS

ABBREVIATIONS ...... 3 TABLE OF CONTENTS ...... 4 LIST OF FIGURES ...... 9 ABSTRACT ...... 10 CHAPTER I: INTRODUCTION ...... 16 1.1. Overview of the Project ...... 16 1.2. Approach and method of implementation ...... 16 1.3. Methods of social impact assessment ...... 17 1.4. Methods of environmental impact assessment ...... 17 1.5. Implementation arrangement of ESIA...... 19 CHAPTER II: DESCRIPTION OF SUBPROJECT ...... 21 2.1. Overview of the subproject ...... 21 2.2. Status of works and auxiliary items...... 22 2.3. Expected activities before construction ...... 57 2.4. Material transportation plan ...... 57 2.4. Activities of operation and maintenance ...... 57 2.5. Plan of dam safety ...... 57 2.6. Progress of implementing subprojects...... 59 2.7. Investment capital ...... 59 CHAPTER III: INSTITUTIONAL FRAMEWORK, LAW, POLICY...... 60 3.1. Applicable national policy, administrative and legal framework ...... 60 3.2. Safeguard policy of the World Bank ...... 65 CHAPTER IV: NATURAL, SOCIAL AND ECONOMIC FEATURES OF THE SUBPROJECT AREA ...... 73 4.1. Natural environment ...... 73 4.2. Socio-economic characteristics of the subproject area ...... 98 a. Main agricultural activities and crop structure of communes under the subproject...... 98 CHAPTER V: ENVIRONMENTAL AND SOCIAL IMPACT ASSESSMENT ...... 105 5.1. Type and scale of impacts ...... 105 5.2. Potential positive impacts on environment and society ...... 106 5.3. Analysis of types of impact ...... 156 6.1. The option of not implementing the subproject ...... 158 6.2. Implementation of the subject ...... 159 CHAPTER VII: ENVIRONMENTAL AND SOCIAL MANAGEMENT PLAN (ESMP) .... 162 7.1. Objectives ...... 162 7.2. Mitigation measures ...... 162

7.3. Implementation arrangement ...... 202 7.4. Environment compliance framework ...... 206 7.5. Grievance redressing mechanism (GRM) ...... 209 7.6. ESMP implementation plan ...... 212 7.7. Training plan, and capacity building ...... 212 7.8. Plan of monitoring compliance and monitoring of environmental quality ...... 214 7.9. Estimation of the cost of ESMP implementation ...... 217 CHAPTER VIII: COMMUNITY CONSULTATION AND INFORMATION DISCLOSURE ...... 224 8.1. Community consultation ...... 224 8.2. Information disclosure ...... 236 CONCLUSIONS AND RECOMMENDATIONS ...... 237 ❖ Conclusion ...... 237 ❖ Recommendations ...... 237 ❖ Commitments of the investor ...... 237 REFERENCES ...... 240

LIST OF TABLES Table 1. List of reservoirs under the subproject “Dam rehabilitation and safety improvement ((WB8), Lam Dong province”...... 10 Table 2. Cost estimation for ESMP implementation ...... 14 Table 3. List of implementing participants ...... 19 Table 4. Geographic location of repaired reservoirs under the subproject ...... 21 Table 5. Summary of some technical parameters of reservoirs ...... 23 Table 6. Construction methods of reservoirs ...... 40 Table 7. Volume of digging and embankment soil ...... 49 Table 8. Locations of borrow pits and disposal sites ...... 50 Table 9. Volume of main materials for the subproject ...... 52 Table 10. Estimation of fuel consumption in the construction process at site ...... 52 Table 11. List of material supply sources ...... 53 Table 12. List of the main machinery for the subproject construction ...... 56 Table 13. Estimated number of construction workers at the construction site ...... 56 Table 14. Progress of implementing subprojects ...... 59 Table 15. Investment capital ...... 59 Table 16. A summary of the WB and Vietnam Government’s environmental assessment process ...... 68 Table 17. Average monthly, annual, highest and lowest temperatures ...... 79 Table 18. Relative humidity (%) ...... 80 Table 19. Monthly, yearly average number of sunny hours in the project area ...... 80 Table 20. Average wind speed and the annual prevailing wind direction ...... 81 Table 21. Average monthly rainfall at stations in the project area (mm) ...... 82 Table 22. Summary of calculation results for design annual flows in reservoirs ...... 84 Table 23. Summary of calculation results for flood flow according to design frequency ...... 85 Table 24. Sampling locations for analyzing quality of environmental components in the subproject area ...... 87 Table 25. Analysis results of surface water quality in the project area ...... 92 Table 26. Analysis results of groundwater quality in the project area ...... 94 Table 27. Analysis results of air quality in the project area...... 96 Table 28. Analysis results of soil quality in the project area ...... 97 Table 29. Details of socio-economic conditions of communes in the subproject, 2019 ...... 101 Table 30. Criteria for classification of negative impacts ...... 105 Table 31. Summary of impacts caused by land acquisition of the subproject ...... 109 Table 32. Volume of biomass generated during the preparation stage ...... 110 Table 33. Summary of impact sources in the construction period ...... 111 Table 34. Summary of impact sources in the construction period ...... 112 Table 35. Volume of construction materials ...... 115 Table 36. Load of dust generated from construction material transportation and swept up by the wind ...... 116 Table 37. Concentration of pollutants in the air generated from the construction materials spilled out due to transportation and swept up by the wind ...... 117 Table 38. Total volume of raw materials transported in tons ...... 117 Table 39. Load coefficient of pollutants for on-road trucks (in 1000 km) ...... 118

Table 40. Number of transporting turns ...... 118 Table 40. Load of pollutants from vehicles of transporting materials ...... 119 Table 42. Concentration of pollutants caused by material transportation activities ...... 119 Table 43. Estimation of consumed petrol in the at-site construction period ...... 120 Table 44. Weight load of pollutants from machinery and equipment in the construction period ...... 120 Table 45. Concentration of pollutants caused by operation of construction machinery ...... 121 Table 46. Summary of soil volume from excavation, embankment and disposal ...... 122 Table 47. Coefficient of diffuse pollutants from construction activities ...... 122 Table 48. Volume of dust generated from excavation, embankment, leveling in the area of construction works ...... 123 Table 49. Concentration of dust from excavation and embankment ...... 123 Table 50. The results of calculating noise level at its source during construction period ...... 124 Table 51. Estimation of noise decrease according to distances from the source ...... 126 Table 52. The vibration level at source and spreading level of some typical construction machinery used in the project construction ...... 128 Table 53. On-site domestic wastewater load ...... 130 Table 54. Coefficient of pollutants in domestic wastewater ...... 131 Table 55. Load of pollutants in domestic wastewater during the construction period in Suoi Dia - Cay Xoai inter-reservoir ...... 131 Table 56. Concentration of pollutants in domestic wastewater during the construction period in Suoi Dia - Cay Xoai inter-reservoir ...... 132 Table 57. Concentration of pollutants in domestic wastewater in the construction period ...... 132 Table 58. Volume of construction wastewater ...... 133 Table 59. Concentration of pollutants in construction wastewater ...... 133 Table 60. Flow rate of rainfall in each work ...... 134 Table 61. Estimated load of polluted substances in overflow rainwater ...... 135 Table 64. Estimation of waste stone and soil volume generated from construction activities of the subproject .... 135 Table 65. Results for the volume of domestic solid waste in the project construction...... 136 Table 66. Forecast for the volume of hazardous waste arisen from basic construction activities ...... 137 Table 65. Locations of borrow pits expected to be exploited for construction activities ...... 140 Table 66. Demand of dumping and locations of disposal sites under the subproject ...... 141 Table 67. Demand of dumping and locations of disposal sites under the subproject ...... 146 Table 68.Specific impacts of the subproject ...... 148 Table 69. Cost estimate for compensation and site clearance ...... 163 Table 70. Environmental Code of Practice (ECOPs) to minimize general impacts during the construction phase ...... 165 Table 71. Impact mitigation measures for each specific site ...... 189 Table 72. Mitigation measures during the operation stage ...... 200 Table 73. Roles and responsibilities of stakeholders ...... 203 Table 74. Requirements of reporting system ...... 209 Table 75. Summary of the content of quality monitoring of environmental components during the construction phase ...... 215

Table 76. Summary of the ESMP implementation cost ...... 217 Table 77. Fund source for monitoring of ESMP...... 217 Table 78. Summary of mitigation measures ...... 218 Table 80. Summary of the consultation results and feedback from the project owner ...... 226 Table 81. Summary of results of consultation on environment and society of AHs ...... 227

LIST OF FIGURES

Figure 1. Location of works under the subproject ...... 22 Figure 2 Status of the earth dam in Suoi Dia reservoir ...... 24 Figure 3. Status of the upstream slope in Suoi Dia reservoir ...... 24 Figure 4. Status of the downstream slope in Suoi Dia reservoir ...... 24 Figure 5. Status of the spillway in Suoi Dia reservoir ...... 24 Figure 6. The dam body in Cay Xoai reservoir, that also is DH12 road ...... 25 Figure 7. Status of the upstream slope in Cay Xoai reservoir ...... 25 Figure 8. Status of the downstream slope in Cay Xoai reservoir...... 26 Figure 9. Status of the spillway in R’lom reservoir ...... 27 Figure 10. Status of upstream water in R’lom reservoir ...... 27 Figure 11. Status of the dam body in R’lom reservoir ...... 27 Figure 12. Status of the dam face in Sa Da reservoir ...... 29 Figure 13. Status of the upstream slope in Da Sa reservoir ...... 29 Figure 14. Status of the gate and the spillway in Da Sa reservoir ...... 29 Figure 15. Status of the dam face in Phuc Tho Farm reservoir (Ri Hil lake) ...... 31 Figure 16. Status of the upstream slope in Phuc Tho Farm reservoir ...... 31 Figure 17. Status of the downstream slope in Phuc Tho Farm reservoir ...... 31 Figure 18. Status of the entrance to the spillway ...... 32 Figure 19. Status of the spillway...... 32 Figure 20. Status of the conveying channel behind the spillway ...... 32 Figure 19. Status of the spillway in Thanh Bach reservoir ...... 34 Figure 22. Status of the dam body in Reservoir No.4 ...... 35 Figure 23. Spillway as well as traffic bridge in Reservoir No.4 ...... 35 Figure 24. The dam crest in Loc Thang reservoir, view from upstream ...... 37 Figure 25. Status of the spillway and traffic road in Loc Thang reservoir ...... 37 Figure 26. Status of the water slope in Loc Thang reservoir ...... 37 Figure 27. Status of the valve tower house and the opening/closing valve in Loc Thang reservoir ...... 37 Figure 28. Status of the dam body in Da Bo B ...... 39 Figure 29. Status of the upstream slope in Da Bo B reservoir ...... 39 Figure 30. Some fish ponds of households in the downstream side of Da Bo B reservoir...... 39 Figure 31. Status of the energy dissipation tank in Da Bo B reservoir ...... 39 Figure 32. Geographic location of Lam Dong province ...... 73 Figure 33. Relative location of Da Bo B Dam with Cat Tien National Park ...... 146 Figure 33: Structure of environmental management and supervision organization ...... 202 Figure 35: Organization chat of Environmental safeguard policy of the subproject ...... 203 Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

ABSTRACT

1. Introduction: The project of: “Dam rehabilitation and Safety Improvement (DRSIP/WB8) funded by the World Bank was approved by Prime Minister through Decision No. 1858/QD-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/QD-NN-HĐQT dated 09/11/2015. 2. The subproject (SP) “Dam rehabilitation and safety improvement (WB8) in Lam Dong province” was approved by Document No. 7500/UBND-NN dated 04 December 2015 by People’s Committee (PC) of Lam Dong province about project implementation. Ministry of Agriculture and Rural Development agreed on the list of reservoirs under the subproject for dam rehabilitation and safety improvement (WB8) in Lam Dong province according to Document No. 8800/BNN-TCTL dated 19 October 2016. Accordingly, the subproject includes 8 reservoirs and the subproject implementation duration is from 2018 to 2022. Table 1. List of reservoirs under the subproject “Dam rehabilitation and safety improvement ((WB8), Lam Dong province”

Height of the Capacity No. Name of works Grade of Work location dam (m) (106m3) works Suoi Dia - Cay Tu Tra commune, 8.3 and 8.4 III 1 Xoai reservoir (0.24+0.21) Don Duong district 13.4 Tu Tra commune, 2 R’Lom reservoir 0.52 III Don Duong district 13 Lien Ha commune, 3 Da Sa reservoir 0.89 III Lam Ha district Phuc Tho Farm Phuc Tho commune, 7.8 IV 4 reservoir 0.24 Lam Ha district 8 Dinh Lac commune, 5 Thanh Bach reservoir 0.46 III Di Linh district Dinh Trang Hoa 10.2 6 Reservoir No.4 0.28 III commune, Di Linh district 6.23 Loc Thang town, Bao 7 Loc Thang reservoir 4.96 III Lam district 7 Gia Vien commune, 8 Da Bo B reservoir 0.21 IV Cat Tien district 3. Status of reservoirs under the subproject “Dam rehabilitation and safety improvement (WB), Lam Dong province”: Most of reservoirs are homogeneous soil dams which have been used for a long time and have not been upgraded, resulting in deterioration, damage, reducing ability of water holding and flood prevention. Main items of works are likely to cause unsafe issues. Besides, most of works were built between 1994 and 2002, based on hydrological documents, natural conditions and design standards; they are no longer suitable for the situation of climate change, especially the current complex climate change. Facing with this situation, it is necessary to repair, upgrade and ensure safety of the works. 4. Head works will be repaired and upgraded, ensuring safety for reservoirs in exploitation and

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province operation, ensuring free flowing water source for 1,960 ha of agricultural land, and frequency of irrigation increasing from 75% to 85%. Status of reservoirs is presented in Section 2.2.1 of this report. 5. Results of Environmental and Social screening: The subproject is not located in or near any natural habitats and there is no rare or endangered animal in the subproject area. There is also no sensitive works and historical, cultural and religious sites in or near the subproject area. Regarding ethnic minority (EM), there were 7 communes under SP with EM people including Phuc Tho, Lien Ha, Tu Tra, Dinh Lac, Dinh Trang Hoa, Loc Thang town and Gia Vien. SP only implements upgrading dams on the existing reservoirs which have been carried out a social and environmental screening, SP is determined not to cause any significant environmental and social impacts and SP was classified as a Category B. Safeguard policies relevant to World Bank are applied for SP including OP/BP 4.01 on environmental assessment, OP 4.09 on pest management, OP/BP 4.37 on safety of dams, OP/BP 4.10 on indigenous peoples, OP/BP 4.12 on involuntary resettlement. Environmental ans social impact assessment is to identify potential negative impacts of the subproject and propose appropriate measures for controlling and managing these impacts to optimize benefits of SP. 6. Environmental and social impacts of SP: SP has both positive and negative impacts. (a) Positive impacts: (i) SP will repair and upgrade safety of head works of reservoirs to ensure safety, production and living conditions of people in downstream of reservoir in communes including Muoi Noi of Thuan Chau district, Chieng Mung, Chieng Ban, Muong Bon, Hat Lot of Mai Son district and people in nearby affected areas; (ii) after being implemented, SP will improve ability of holding water, increase capacity of storing underground water in the nearby areas, including water source for shallow aquifers; (iii) SP will provide irrigation water regularly and stably for downstream agricultural cultivation areas; (iv) SP will improve landscape in the reservoir area and provide aquatic habitat. (b) Negative impacts in the preparation phase: ✓ Some activities in the preparation phase for construction include: (i) activities of unexploded ordnance (UXO) clearance carried out by a specialized military unit in the province, these activities potentially cause risks of landmines/UXOs for human lives; (ii) drilling activities for geological survey by the design consulting unit that can affect the geology and groundwater sources of the area; (iii) activities of vegetation clearing and site clearance what are likely to impact the site surface, result in risks of erosion, landslides and the generation of plant biomass. ✓ Impacts associated to land acquisition: As per Inventory of Losses (IOL) conducted in June 2019 by the Consultant of RAP preparation, the implementation of the Subproject 2 - Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province will impact 12 villages of 7 communes/town in 5 districts, Lam Dong province. Regarding land acquisition only, the Subproject will affect 23 HHs and 7 organizations (7 communal PCs will be temporarily affected). There will be no severely affected households (SAHs) (losing from 20% of production land or 10% for vulnerable HHs). 2 AHs will be relocated due to building houses within the dam safety corridor. 3 HHs are of the vulnerable group (2 HHs are single-women HHs and 01 HH has disabled people). Permanent impacts Permanent impacts of land The Subproject will acquire permanently 4,755 m2 of land of 16 HHs (1 AH has two types of production land), in which: - Annual crop land : 813 m2 of 3 HHs

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province - Perennial tree land : 2,644 m2 of 12 HHs - Forest land : 110 m2 of 1 HH - Aquaculture land : 1,188 m2 of 1 HH Impacts on houses and structures The Subproject will affect houses and structures of 6 HHs. Details of the area and number of AHs are as bellows. - The area of affected houses : 194 m2 of 2 HHs - The area of affected gates : 24 m2 of 2 HHs - The area of affected farming stables : 30 m2 of 1 HH - The area of affected tents/stalls : 18 m2 of 1 HH Impacts on crops and trees The Subproject will affect trees and crops of 35 HHs. Types of trees/crops and number of AHs are detailed as bellows. - Fruit trees: 77 trees of all kinds (Longan, Guavan, Durian, Jackfruit, Graprefruit, etc.) of 10 HHs - Timber trees: 323 trees (Acacia, Eucalyptus, Phoenix, etc.) of 6 HHs - Industry trees: 874 trees of all kinds (Coffee, Macadamia, Mulberry) of 10 HHs - Bonsai trees: 10 trees of 01 HH - Annural trees and crops of all kinds: 813 m2 (Maize, cassava, chili, turmeric) of 5 HHs - Other kind of trees: 626 m2 of elephant grass of 3 HHs Temporary impacts The Subproject will acquire temporarily 57,500 m2 of land managed by 07 communes/town to build camps for workers, gather construction machines, store materials and tools. Some positions will be temporarily used for waste soil and waste materials before leveling or transporting to a formal disposal site during the construction period. This is the estimated number, the number will be updated accurately by the contractors based on the actual construction measures. The temporarily affected parts will be compensated in accordance with the project policy framework, and the contractor will pay all fees for these affected parts. Details of temporary effects are presented in Section 3.2. (c) Negative impacts in the construction period: Effects relevant to construction activities such as noise, vibration, air pollution (caused by dust and emissions), water pollution, waste, flora and fauna ecosystem, social risks due to site clearance and construction activities, effects on traffic safety, community infrastructure, risks of labor accidents, community conflicts, infectious diseases, interrupted production and business were identified and evaluated in the report. Works of the Subproject scattered in 7 communes/town of 5 districts, locations of construction site were in the area of agricultural cultivation, far from the residential area and important water bodies, without occupying forest land, and thus the Subproject’s activities were assessed to cause low to moderate negative impacts and can be completely controlled with an appropriate management plan. (d) Negative impacts in the operation period: Potential impacts in this period include risks of drowning, waste from operators, risks of landslides, sedimentation, changes in aquatic ecosystems and flow regime. In addition, the process of emergency flood discharge in the rainy season can cause risks of lack of safety for downstream areas, risks of flash floods and local floods

Mitigation measures for impacts: To handle these impacts, an Environmental and Social Management Plan (ESMP) has been prepared as a part of this document with proposed

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province implementation arrangements for impact management, environmental management and monitoring, reporting requirements, capacity building, budgeting for implementation. A separate Resettlement Action Plan/Compensation and Resettlement Plan and a Ethnic Minority Development Plan has been prepared to deal with the impacts of land acquisition. The following are the measures which need to be taken.

➢ Mitigation Measures in the preparation phase for construction - Measures for UXO clearance: The Subproject will hire a qualified unit to clear bombs, mines and explosive objects on the entire site of the project components before commencing. Safe distance will be ensured and the people will be warned suring the process in compliance with QCV 01:2012/BQP - National technical regulation on clearance of bombs, mines and explosive objects and QCVN 02:2008/BCT - Regulation National technique for safety in transporting, preserving, using and disposing industrial explosives. - Safety solutions in the process of drilling for geological survey: After geological exploration drilling, the surveying unit will fill boreholes and backfill in areas to minimize the impact of material washout that can bring dirty materials into the groundwater, affecting its quality. - Measures to treat waste during the process of clearing and site preparation: There is a plan to clean the ground surface, restrict backlog that obstructs the water drainage process. For plants, shrubs (not much volume): Clearing, gathering and piling for the people to utilize the woody parts for fuel, the leave parts will be hygienically buried. For perennial industrial trees (coffee, rubber): Notify people to make full use before clearing and destroying. For the residuals, the woody parts will be used for fuel, the leave parts will be hygienically buried. - Measures to prevent erosion of works' surfaces in the rainy season after clearing should be applied. - Measures of compensation and sire clearance according to prepared, measures of clearing, site clearance, gathering machinery and equipment. ➢ Mitigation Measure in the construction phase: Including measures to control air pollution, noise and vibration; measures for collecting and treating domestic waste, construction waste water, solid waste and hazardous waste; measures to ensure biodiversity, limit soil erosion; Measures for traffic safety and drainage; measures to ensure occupational health and safety, local security. Impacts during the construction process are mitigated according to Environmental Codes of Practice (ECOP) and specific mitigation measures are detailed in Chapter 7 of the report. ➢ Mitigation Measures in the operation phase: Including drowning prevention measures; measures to prevent and control the effects of integrated pests; treatment of domestic waste from activities of reservoir operators; measures for repairing and maintaining reservoirs and emergency flood discharge in case of great floods affecting downstream areas; measures to reduce risks of natural disasters causing lack of safety. Specific measures and the unit responsible for implementing and monitoring are presented in Chapter 7 of the report. 7. Implementation arrangements: Management Unit of Agriculture and Rural Development Works, Lam Dong province (hereinafter referred to as PPMU) will be responsible for compliance with the Bank-approved ESIA. The PPMU ensures that valid tender documents and contracts include environmental provisions for the contractor to comply. The contractor will carry out construction activities and comply with the environmental provisions agreed in the contract. Especially, the Contractor shall prepare a site Environmental and Social Management Plan (C- ESMP) for the PPMU to review and approve before commencing the construction. PPMU and consultants will closely monitor the compliance with mitigation measures agreed in the contractor. In addition, the compliance of the contractor will be closely monitored by Lam Dong DONRE, local authorities and the people.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 8. Capacity building: During the implementing period, PPMU was assisted by CPMU in environmental safeguard policies of the World Bank. PPMU officials were trained by WB experts in the training sessions organized by CPMU on environmental safeguard policies of the project including OP 4.01 (Environmental Assessment), General guidelines on Environment, Health and Safety (EHS) of IFC, OP 4.04 (Natural Habitats), OP 4.10 (Indigenous Peoples) and OP 4.12 (Involuntary Resettlement), etc. During the subproject implementation, the training in environmental safeguard policies for Construction Supervision Consultant (CSC) and EHS staff of the contractor will be conducted regularly to update the requirements of WB policies and relevant information. PPMU will also receive the support from independent consultants and technical consultants on management of dam safety risks and supervision of implementing the ESMP. 9. Public consultation: In the process of preparing the ESIA report, 7 consultation meetings were hold in 7 communes/town of the subproject area. Participants in the meetings include: representatives of local authorities from 07 communes/town under the subproject; mass organizations: Fatherland Front, Women's Union, Youth Union, Farmers Association, etc.; representatives of households in the project area include households likely to be acquired land (25 households), beneficiaries (82 households). Consultation results show that the local authorities and communities in the sub-project implementation area are very supportive and look forward to the subproject implementation (100% of the participants attend, 107 households consulted at the meetings agreed about the subproject implementation). 10. Information disclosure: In compliance with OP 4.01 and the WB’s policy on access to information. At the first period of the subproject, information of contents related to repair and upgrade under the subproject and information of land encroach and entitlements of AHs have been published on mass media and sent directly to local authorities. PPMU has disseminated to and consulted directly with the community (involving both affected people and beneficiaries) and local organizations (communal People's Committee, Fatherland Front Committee, Women's Union, Farmer's Union, etc.) in June 2019. The draft environmental and social impact assessment report in Vietnamese was sent to PCs of communes to disseminate information and consult with AHs and local non-governmental organizations in August 2019. The final report in English will be disclosed on the CPO’s website and the WB’s website before the appraisal of the subproject. 11. Grievance redress mechanism (GRM): Grievances relevant to any issue of the subproject will be addressed through negotiations to reach consensus. A grievance will go through three stages before it is transferred to court. The enforcement unit will pay all administrative and legal costs associated with accepting grievances. This cost is included in the subproject budget. 12. Cost estimation for ESMP implementation: ESMP implementation cost estimate includes costs for ESMP monitoring, mitigation measures implementation and capacity building. Mitigation measures implementation cost shall be included in the construction cost. The table below presents cost estimates for monitoring and capacity building activities. Table 2. Cost estimation for ESMP implementation No. Cost item Currency Amount Cost estimated for Contractor’s specific 1 VND 308,240,000 mitigation measures Cost for environmental monitoring during 2 VND 1,369,774,000 construction phase 3 Cost for capacity building program VND 131,000,000

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Cost item Currency Amount 4 Contingency (10% of 1+2+3) VND 153,670,400 Total VND 1,953,124,600

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

CHAPTER I: INTRODUCTION

1.1. Overview of the Project 13. The Government of Vietnam has received a credit from International Development Agency (IDA)/ World Bank (WB), via Loan Agreement No. 5749-VN signed on 08 April 2016, financing the Dam Rehabilitation and Safety Improvement Project. The project will be implemented from 8 July 2016 to 30 June 2022. 14. The project “Dam rehabilitation and Safety Improvement” (DRSIP/WB8) funded by WB has been approved by the Prime Minister in Decision No. 1858/QD-TTg dated 02 November 2015 and the Feasibility Study Report of this project has been approved by Minister of Agriculture and Rural Development in Decision No. 4638/QD-NN-HDQT dated 09 November 2015. 15. 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: Planning and management of dam safety, budget: USD 20 million. - Component 3: Project management support, budget: USD 11 million. 16. 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 areas have a large number of dams which were built long time ago with little attention on great improvement, resulting in high risks of dam failure when natural disasters. 17. 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 fill and small dams with a height of below 15m and a design capacity of less than 3 million cubic meters (mcm). The project proposes not to support for structural change or expansion to ensure safety. 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. 1.2. Approach and method of implementation 18. The Environmental and Social Impact Assessment (ESIA) was implemented in accordance with World Bank regulations and in accordance with the Environmental and Social Management Framework approved by the World Bank. The ESIA steps 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 of stakeholders and information disclosure have been also mainstreamed in this process. In addition, ESIA is also implemented in accordance with the guidelines of relevant policies and regulations of the Government. 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 promote the positive effects and control negative impacts as well as risks of the subproject.

Environmental and Social Impact Assessment (ESIA) 16

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 1.3. Methods of social impact assessment 19. 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-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 subprojects. 20. 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 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). 21. 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. 22. 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. 1.4. Methods of environmental impact assessment 23. During the research, survey and preparation of ESIA report, the consultant team used a combination of the following research methods. (1) Rapid Assessment Method 24. 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. 25. 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 8/1991). (2) Impact matrix method 26. 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 27. 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. Environmental and Social Impact Assessment (ESIA) 17

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province (4) Description of environmental system 28. 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 29. 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. (6) System analysis method 30. 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 31. 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. 32. In addition, local officials and local people will be exchanged and interviewed about socio- economic development situation, cultivation customs and environmental sanitation. (8) Method of synthesizing, analyzing information and data. 33. 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 34. 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. 35. 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 method 36. The method is based on knowledge and experience of environmental science of environmental impact assessment from consultancy agencies and other scientific research agencies. (11) Sampling and sample analysis in laboratory 37. 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. 38. 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. 39. For Lam Dong SP, the consultant has collaborated with the Environmental Monitoring Agency to monitor, sample, and analyze samples of air, water, soil in the area of 8 reservoirs to assess the status of environmental quality. Sampling, analysis and sample storage are in compliance with current Vietnamese Standards. Environmental and Social Impact Assessment (ESIA) 18

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 1.5. Implementation arrangement of ESIA SP management - Investor: Department of Agriculture and Rural Development in Lam Dong province; - Representative of the project investor: Project Management Unit of Lam Dong province (Lam Dong PMU). - Address: Floor 4, Area C, Administrative Center of Lam Dong province - No.36 Tran Phu, ward 4, Da Lat city, Lam Dong province. - Representative: Ha Thanh Binh Position: Director - Phone: 02633510208 Consulting unit in charge of preparing report - E.P.C Investment and Environmental Protection Consultancy Company. - Office address: 495/8/15 To Hien Thanh, Ward 14, District 10, HCM City - Representative: Nguyen Nam Son Position: Director - Phone: 0903345295 Email: [email protected] Joint-venture consulting unit in charge of preparing report - LHC Vietnam Investment and Trading Co. Ltd. - Address: 38B, Alley 77, Xuan La, Xuan La ward, Tay Ho district, Hanoi - Representative: Luu Thanh Nhai Position: Director - Phone: 0975121758 Email: [email protected] Unit coordinating in performing environmental monitoring - Khai Thinh Environmental Technology - Service - Trading Company. - Address: 41/11 Road 35, Hiep Binh Chanh Ward, Thu Duc District, HCM City - Representative: Huynh Chau Qui Position: Director - Phone: 0962740584 Table 3. List of implementing participants No. Full name Qualification Responsibility Master of 1 Nguyen Nam Son Summarize topics, write the ESIA report Environment Perform field survey, socio-economic survey, Master of 2 Trinh Thi Bich Thuy community consultation, participation in Environment preparing the social report. Perform field survey, field investigation, Master of 3 Nguyen Cong Hiep community consultation, write the report on Environment Environment. Perform field survey, be in charge of Master of 4 Le Quang Hai environmental monitoring and sample analysis, Environment participate in writing the report on Environment. Perform field survey; participate in writing the 5 Pham Huu Nhu Irrigation engineer report on Ecology and Hydrology. 6 Le Van Trong Master of Perform field survey; participate in writing the

Environmental and Social Impact Assessment (ESIA) 19

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Full name Qualification Responsibility Environment report on Ecology and Hydrology. Bachelor of 7 Phan Thi Hoai Thu Supporting staff in charge of data synthesis. Environment Bachelor of 8 Nguyen Duc Anh Supporting staff in community consultation. Environment Bachelor of 9 Le Thi Phuong Supporting staff in community consultation. Environment

Environmental and Social Impact Assessment (ESIA) 20

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

CHAPTER II: DESCRIPTION OF SUBPROJECT

2.1. Overview of the subproject 40. The subproject of Dam rehabilitation and Safety Improvement of Lam Dong province is financed by the World Bank (WB) through the Credit Agreement No. 5749-VN signed on 8 April 2004 with the implementation duration of the project from 2017 to 2022. Pursuant to Decision No. 4638/BNN-HTQT dated 09/11/2015 of the Ministry of Agriculture and Rural Development, the subproject in Lam Dong province is implemented in seven communes in 5 districts including Don Duong, Cat Tien, Di Linh, Lam Ha and Bao Lam. Name of the subproject: - Dam Rehabilitation and Safety Improvement (WB8), Lam Dong province. Subproject owner: - Subproject investor: Department of Agriculture and Rural Development in Lam Dong province. - Representative: Project Management Unit of Agriculture and Rural Development Works in Lam Dong province. - Address: Floor 4, Area C, Administrative Center of Lam Dong province - No.36 Tran Phu, ward 4, Da Lat city, Lam Dong province. - Representative: Ha Thanh Binh Position: Director - Phone: 02633510208 Objectives of the subproject a. Overall objectives 41. 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 - Restore and ensure safety of works via repairing and upgrading reservoirs, dams that have been degraded or reduce ability of flood discharge. - Enhance regime, policy of management, monitoring dam safety at the national level; build capacity of management, operation and integrated information mechanism in the basin. - Strengthen capacity of project management and implementation, environmental and social management. - Improve the environmental landscape, infrastructural for economic development of the project area. Geographic location of the subproject 42. The subproject of dam rehabilitation and safety improvement in Lam Dong province includes 8 reservoirs in 7 wards and 5 districts of Lam Dong province. Details are in Table 4. Table 4. Geographic location of repaired reservoirs under the subproject No. Name of works Commune District X (m) Y (m) Note 1a Suoi Dia Tu Tra Don Duong 573,654.00 1,298,577.00 The middle reservoir of the dam

Environmental and Social Impact Assessment (ESIA) 21

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Name of works Commune District X (m) Y (m) Note 1b Cay Xoai Tu Tra Don Duong 573,832.00 1,298,766.00 The middle reservoir of the dam 2 R’lom reservoir Tu Tra Don Duong 579,484.71 1,290,577.54 The middle of the dam 3 Da Sa reservoir Lien Ha Lam Ha 541,535.57 1,295,610.65 The middle of the dam 4 Phuc Tho farm Phuc Tho Lam Ha 541,523 1,295,747 The middle reservoir of the dam 5 Thanh Bach Dinh Lac Di Linh 541,823.44 1,284,853.64 The middle reservoir of the dam 6 Reservoir No.4 Dinh Trang Di Linh 522,197.24 1,279,432.72 Center of Hoa spillway 7 Loc Thang Loc Thang Bao Lam 508,520.07 1,283,896.64 The middle reservoir town of the dam 8 Da Bo B Gia Vien Cat Tien 458,720.04 1,288,500.09 The middle reservoir of the dam Figure 1. Location of works under the subproject

2.2. Status of works and auxiliary items 43. Some of the key technical parameters of works under the subproject are summarized in Table 5.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Table 5. Summary of some technical parameters of reservoirs

Total Earth fill dam Basin area No. Name of reservoir capacity Length of dam Height of dam Km2 106 m3 m m 1a Suoi Dia 22.98 0.2367 269.14 8.3 1b Cay Xoai 2.64 0.20533 230.45 8.4 2 R’lom 5.54 0.5186 454.9 13.4 3 Da Sa 5.5 0.89455 250 13 4 Phuc Tho 1.15 0.23736 195 7.8 5 Thanh Bach 39.34 0.45464 110.82 8 6 No.4 4.64 0.27491 127 10.2 7 Loc Thang 7.2 5.078 138.5 6.23 8 Da Bo B 13.4 0.21056 201.03 7

2.2.1. Status and upgraded work items of the subproject

1a. Suoi Dia reservoir (i) Status of works 44. Crest of dam: The dam crest has the elevation of +982.08m, and length of 273.22m and it is an earth dam. The elevation of the dam surface is unevenly changed from +982.00m to +982.30m, without wave wall. The surface of the dam top has not been reinforced, it is also the access road to the tea production factory area that is now eroded and narrowed. In addition, many holes appearing in many places may cause unsafe issues. 45. Upstream slope: Upstream slope has been not reinforced, landslided, subsided unevenly. At the position of changeable water level, a cleft has appeared deeply in the dam body. Currently, plants grow wildly on the dam slope. 46. Downstream slope: Downstream slope has been not reinforced, landslide, unevenly subsided, being wet due to water absorption, there has not been a drainage thing to dewater from the dam body and the downstream face. Cattle grazing trails created a bare road without protection, when heavy rains, these areas could be easily eroded and the risk of erosion into trenches along the road were very high. Besides, a number of positions along the downstream slope have been deformed and eroded, leading to a size reduction of the dam cross section. 47. Absorption and seepage: Currently, downstream dam slope occurred absorption. This caused wetness and muddiness. Absorbed positions appeared from the dam bottom up to a height of about 2.0m and two sides of dam shoulder that were adjacent to the hillside. Absorption did not appear locally, without extrusion circuits or effervescence, the permeated water was clear. 48. Spillway: The gate of the spillway has earth-fill structure on which grass covered fully, constructing the ability of discharging flood. The next part connecting to the overflow level is a pipe across the road and a channel with a length of 10m (L=10m). 49. Leading channel for downstream flood discharge: the channel is made of soil, has yet to be reinforced with grass covered, sedimentation in the channel also reduces the ability of water discharge. However, this impact will be mitigated after being reinforced.

Environmental and Social Impact Assessment (ESIA) 23

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Figure 2 Status of the earth dam in Suoi Dia Figure 3. Status of the upstream slope in Suoi reservoir Dia reservoir

Figure 4. Status of the downstream slope in Suoi Figure 5. Status of the spillway in Suoi Dia Dia reservoir reservoir

(ii) Construction items in Suoi Dia reservoir 50. Earth dam: (i) Technical measures: Apply pressure structure to expand the dam with the width as stipulated, build barriers to guarantee traffic safety and safe height of the dam crest when flooding; widen the dam crest to 6.0m that is also used as a traffic road, and reinforce it by cement concrete M250, 18cm thickness; (ii) the upstream slope ensures mt =2.75, being reinforced by concrete slabs M200 from the elevation of +976.94m up to the dam crest. The size of a slab is (200x200x12) cm, under the slab layer is the filter ballast stone layer with thickness of 15cm and the filter sand layer with 15cm thickness; (iii) the downstream slope is planted grass from the dam crest to the dry paving stone elevation of +975.60m. The dam shoulder is arranged a drainage line made of masonry M100, trapezoidal section BxH=30x30cm; the drainage system at the dam foot is a compacted pile of dewatered stones. 51. Spillway: Utilize the old spillway, reinforce the downstream channel to ensure safety when discharging flood. 52. Intake culvert: Newly construct the downstream culvert with D=600cm, length of 34.80m L=34.80m and two downstream cone valves tow valves with the under part structured by reinforced concrete M200.

1b. Cay Xoai reservoir (i) Status of works 53. Crest of dam: The top of the dam is at the elevation of +979.54m, a length of 230.45m. The earth dam is also an inter-commune traffic road that has asphalt concrete structure, relative even Environmental and Social Impact Assessment (ESIA) 24

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province elevation, no subsidence is recorded, the top width meets current regulations. 54. Upstream slope: Currently the upstream slope has yet to be reinforced, was landslided and unevenly subsided. At the position of changeable water level, a cleft has appeared deeply in the dam body. Currently, the people has encroached the land, planted crops and fruit trees. Grass overgrow on the dam slope. 55. Downstream slope: Couch grass was planted for protection. Currently, many trees with a large diameter has been grown, their roots deeply rooted in the dam slope, possibly leading instability. The coefficient of the downstream slope is uneven, there is no drainage system for the dam body and downstream side. 56. Absorption and leakage: Currently, downstream dam slope occurred absorption. This caused wetness and muddiness. Absorbed positions appeared from the dam bottom up to a height of about 1.5m and at two sides of dam shoulder. 57. Spillway: In the past, spillway of Cay Xoai reservoir was a culvert, having a function of flood discharge for basin of Suoi Dia and Cay Xoai reservoirs. However, after the tea factory building the Suoi Dia dam to have an access to the production area, this spillway was used for flood discharge for the basin of only Cay Xoai reservoir. The spillway has built for a long time, before the inter-district road upgraded. When building the road, it has not been repaired, is currently deteriorated, the spillway entrance that was made of stone was subsided, the spillway body that was made of concrete BxH = 2.5x1.5m was subsided, this concrete due to long-time construction is no longer able to withstand the force, the ceiling made of steel beams is sagged. Downstream side that was reinforced by stone BxH = 2.4x1.5m, L = 12.15m, is now subsided and damaged. Therefore, it is necessary to newly construct the spillway to ensure safety for roads and meet the new task of the structure. 58. Bottom discharge culvert: The bottom discharge culvert was temporarily built by a “buy” pipe D40cm without a regulating valve, thus water frequently flows through the culvert to reservoir No.7, the reservoir is not able to hold water, this culvert is very dangerous, unsafe for the people when it operates. 59. Channel of downstream flood discharge: The downstream of Cay Xoai Reservoir is Reservoir No. 7, thus flood discharge of Cay Xoai Reservoir depends on the discharge capacity of Reservoir No. 7. The culvert and spillway are constructed to ensure safety.

Figure 6. The dam body in Cay Xoai Figure 7. Status of the upstream slope in Cay reservoir, that also is DH12 road Xoai reservoir

Environmental and Social Impact Assessment (ESIA) 25

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Figure 8. Status of the downstream slope in Cay Xoai reservoir (ii) Construction items in Cay Xoai reservoir 60. Dam: (i) Apply pressure structure, build wave barrier wall on the dam crest. The face of the dam is 6.4 - 8.5m wide, also used as a traffic road, reinforced by asphalt concrete. (ii) The coefficient of the upstream slope mt=2.75. The upstream slope is reinforced by concrete slabs M200 from the elevation of +974.00m to the dam crest. The size of slab (200x200x12) cm, under the slab layer is a filter ballast stone layer with thickness of 15cm, a filter sand layer with thickness of 15cm. 61. Downstream slope: Grass being planted for protection from the dam crest to the graveled elevation of +975.60m. The drainage equipment in the dam body is a compacted pile of dewatering stones. Covering stones is the reverse filter layer including two layers, the outer layer (exposed to the soil) is filter sand, 15cm thickness, followed by the filter ballast stone layer, 15cm thickness. 62. Intake culvert: Culvert and spillway are arranged in combination.

2. R’Lom reservoir (i) Status of works 63. Dam: The upstream slope was reinforced in 1997 by dry paving big rocks but due to the impact of the wave and rocks being removed by the local people to catch shrimps and crabs, the rock layer from the normal water level (NWL) downward was cracked, subsided to the reservoir bottom. Currently, there is only the rock layer from NWL to the dam crest. Because of no protection rock layer, the upstream slope from NWL downward has been eroded due to backwater effect at many positions. 64. Spillway: The surface of masonry has been peeled, the most damaged is the water slope and the energy dissipation tank. The channel section from the back of the energy dissipation tank to the old stream has been deposited. Hence, if a flood stronger than the design flood occurs, the ability of flood discharged will be limited. 65. Intake culvert: The bridge tailing and the valve tower were damaged. The conical valve gate is complicated to operate, each time it is damaged, it needs to hire divers from Phan Rang, Phan Thiet, etc. to repair. This valve gate type is also dangerous for repairman and operators to repair the valve in the condition of high reservoir water level. 66. Operation and management road: The scale of the project as designed no longer guarantees water supply and safety parameters of the structure according to current conditions and regulations. The route starts from Tu Tra PC to the foot of the earth dam has a total length of 7.00km; it is an earth road; the road width is Bn = 4.0 - 6.0m; the road surface is eroded, muddy, preventing vehicles from travel. 67. Channel of flood discharge behind the spillway: The channel section from the back of the stilling basin to the old stream that has been filled. Hence, in case the design flood or above

Environmental and Social Impact Assessment (ESIA) 26

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province appears, the capacity of flood discharge will be affected. This risk is eliminated because the spillway and the diversion channel behind it will be rebuilt and reinforced.

Figure 9. Status of the spillway in R’lom Figure 10. Status of upstream water in R’lom reservoir reservoir

Figure 11. Status of the dam body in R’lom reservoir (ii) Construction items in R’lom reservoir 68. Dam: (i) Crest of dam: has been expanded to reach the width of 5m (B=5m), reinforced with cement concrete M250 of 18cm thickness on the ballast stones layer of 20cm thickness. (ii) Upstream slope: has been reinforced with cast in situ reinforced concrete, 2.0x2.0m size, 12cm thickness on the 15cm-thickness ballast stone layer and the 15cm-thickness filter sand layer. (iii) Downstream slope: has been planted grass and built drainage ditches, at the dam body and the intersection between the downstream slope and hill shoulder, water intake ditches were arranged. (iv) Drainage equipment at the dam downstream is a prismatic rock pile in combination with paving the slope by dry stones. 69. Spillway: Based on the old spillway, expanding the spillway to a width of 25m (Btr=25m), with the form of wide spillway crest, structured with concrete and reinforced concrete M250. 70. Intake culvert: New construction of intake culvert is 40m from the current culvert at the right shoulder of the dam, with the length of 63.64m (L = 63.64m). Structure of the culvert body is a steel pipe type D500, 10cm thickness, covered with armored concrete, including a valve and a tower house at the downstream side. 71. Operation management construction: (i) road of construction in combination with operation management: repairing and upgrading the road with 2,360m length, 3.50m width, 2x1.25m roadside size, the road surface is constructed from concrete M250, 18cm thickness, the below is a

Environmental and Social Impact Assessment (ESIA) 27

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province nylon layer and a ballast stone layer with 15 cm thickness. (ii) Horizontal drainage system: arranging 5 drainage culverts (1 culvert D1.500, 4 culverts D1000) in turn at road milestones of Km0+209.61, Km0+493.46, Km0+791.25, Km1+64.33, Km1+337.72. (iii) Rebuilding a management house that is a grade IV house, the area of 60m2.

3. Da Sa reservoir (i) Status of the works in Da Sa reservoir 72. Crest of dam: The dam crest has the elevation of +924.45m, a 230m length, the dam is an earth dam. The dam surface elevation changes unevenly from +924.00m to 924.50m without a wave barrier. The surface of the dam crest has been yet to be reinforced, it is now eroded, and its width is narrowed. Besides, holes appear in many positions, causing unsafe issues. 73. Upstream slope: has been reinforced with paving stones up to the elevation of +922.50m. After a long time of exploitation, under the influence of wind and waves, the paving stones was deflected, completely abandoned, locally piled on the slope, the underneath filter gravel layer was washed away. Many areas are sunken 50-60cm deep, the slope is deformed ± about 2.0 - 2.5m compared to NWL. 74. Downstream slope: The downstream slope has been planted couch grass for protection. Currently, livestock grazing appears on the slope causing negative effects on the slope operation. Cattle grazing trails possibly form bare spaces without protection, when heavily raining, this area will be easily eroded, and the risk of eroding to create road ditches along the route is very high. In addition, some positions on the slope was deformed and eroded, leading a decrease of dam cross- section size. 75. Absorption and leakage: Currently, there was a sign of absorption at the downstream slope, causing wetness and muddiness there. Absorption positions were about 1.5m upper the dewatering stone pile and two sides of the dam shoulder adjacent to the hillside. Absorption did not appear locally, without extrusion circuits or effervescence, the permeated water was clear. 76. Spillway: (i) Gate: The gate is structured by masonry, covered fully by vegetation, and deposited, consequently reducing the ability of flood discharge. In addition, the structure of masonry used for a long time has been damaged, easily peeled. (ii) Spillway: the spillway was structured by reinforced concrete. Currently, as observations it is still in good quality, but the entire spillway was deposited, fully covered by grass, as a result limiting the ability of flood discharge. 77. Channel of flood discharge: Following the spillway is the conveying channel with a total length of 190m, the entire channel is made of earth with no reinforcement and growing grass, sedimentation happens, reducing the ability of flood discharge. This risk is eliminated because the spillway and the channel behind it will be rebuilt and reinforced. 78. Water intake culvert: Currently there is no culvert of water intake as well as bottom discharge. All discharging works are very complicated, mainly by using siphon piping. This method is often ineffective due to the large amount of aquatic life, the diameter of the pipe is small, making it difficult to empty the reservoir. 79. Management road: The management route connecting the traffic road with the dam is an earth road, muddy in the rain season, the road width is narrow, causing difficult travel. It needs a solution for upgrading, expanding, reinforcing the road to ensure traffic convenience.

Environmental and Social Impact Assessment (ESIA) 28

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Figure 12. Status of the dam face in Sa Da Figure 13. Status of the upstream slope in Da reservoir Sa reservoir

Figure 14. Status of the gate and the spillway in Da Sa reservoir

(ii) Construction items in Da Sa reservoir 80. Dam: (i) Uplift the dam crest to the elevation of +924.80m and build parapet walls at the elevation of 925.15m to ensure safety when appearing the design flood. (ii) The dam crest or the traffic, operation, management road has been reinforced by concrete M250, the ballast stone layer with 18cm thickness, 5m width (B=5.0m), two parapet walls with the size of BxH=30x40cm; (iii) Coefficient of slope: the coefficient of the upstream slope is m=3, the upstream slope is paved by reinforced concrete M200 with the size of BxH=200x200x12 cm, on the filter ballast sand layer, each layer has a thickness of 15cm. (iv) Downstream slope: the coefficient of the downstream slope is mhl=2.75, the slope is planted grass and for the drainage equipment, compacting the pile of dewatering dry paving stones. 81. Spillway: (i) Constructing the wing wall to gradually narrow according to the direction from the gate to inside, the wall is structured by reinforced concrete M250, has the function of directing flow and protecting the embankment. (ii) Spillway: 1. Remain status of the spillway that is a wide crest spillway with the overflow elevation of 922.50m, width of (B=) 8.4m, including 3 compartments, also used as a local traffic road with the load capacity of H13-X60; 2. Reinforce and raise the overflow wall by reinforced concrete M250 to the calculated elevation; (iii) Narrowed section: this section has a length of 10m; the width of the narrowed starting section is (B=) 9.2m, the width of the narrowed ending section is (B=) 4.0m, the slope of the slope bottom is (i =) 10%. The height of the border wall is (H=) 2.0m. The spillway body is structured by reinforced concrete M250; (iv) Energy dissipation after the slope: the form of energy dissipation is an energy dissipation tank, length of (L=) 10m, width of (B=) 4m. The slope of the slope bottom is

Environmental and Social Impact Assessment (ESIA) 29

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province (i=) 0.0. The height of the border wall is (H=) 2.58m, the width is (B=) 4.0, the coefficient of the bottom slope is (i=) 0.0, the height of the boundary walls is (H=) 2.58m. . 82. Intake culvert: (i) Culvert way: the culvert way is arranged at D4-7m of the right shoulder of the spillway. (ii) Structural solution: the culvert way has a circular cross-section, it is made of pre- fabricated steel pipe Ø600mm, thickness of 10mm, armored by concrete M300 with a 20cm thickness as circular cross-section, opened and closed by the downstream valve. 83. Operation and management works: Newly construct a management house, IV grade, area of 60m2.

4. Phuc Tho Farm reservoir (i) Status of works 84. Crest of dam: The dam crest has an elevation of +999.00m and a length of 195m. The elevation of the dam face changes unevenly from +999.00m to +999.50m, without wave walls. The surface of the dam crest has not been reinforced, it is now eroded, landslided, its width is narrowed. Besides, holes appear in many places, causing unsafe issues. 85. Upstream slope: The upstream slope has been reinforced, many positions are 50-60 cm sunken, creating clefts, resulting in deformation and instability of the upstream slope. The slope deformed ±2÷2.5m compared to NWL. Vegetation overgrows on the slope. 86. Downstream slope: The downstream slope is encroached to plant coffee trees. Tree planting on the slope appearing negatively affects on the slope’s operation. Trails create bare spaces without the protection of grass, when heavily raining, this area will be easily eroded and the risk of erosion into trenches along the road were very high. The downstream slope was sagged seriously because of the permeable flow concentrated at the dam foot, causing erosion. Some positions along the downstream slope deformed due to erosion, resulting in a reduction in the size of the dam cross-section. 87. Absorption and leakage: Currently the downstream slope has a sign of absorption that causes wetness and muddiness. The permeable positions were 1.5m from the top of the slope and two sides of the dam shoulder adjacent to the hillside, the absorption did not appear locally without extrusion circuits. However, when going down to the dewatering stone pile, the permeable line concentrated to form a flow with the inflow current of 1.5-2L/s, the permeable flow is clear. 88. Spillway: (i) Spillway: The spillway is the form of free overflow, with wide crest B=2.0m, made of earth, the elevation of the spillway changed unevenly from +998.30m to +998.50m. The spillway was structured from earth, as observed, the entire spillway was deposited, vegetation overgrew, blocking flood discharge. (ii) Entrance gate: The conveying channel to the gate is 20m long, made of earth, the channel section after the spillway is 40m long in total, made of earth. 89. Water slope, the diversion channel behind the spillway and the energy dissipation tank: Following the spillway is the conveying channel behind the spillway with the total length of 40m, the channel is made of earth, has not been reinforced, vegetation overgrew, sedimentation occurred, all factors result in the reduction of flood discharge ability. After reinforcing and dredging the channel bed, this impact will be insignificant. 90. Operation and management road: The route is from the commune to the dam foot with a total length of about 1.20km, made of earth, the road width is (Bn=) 4.0-6.0m, the road surface was eroded, muddy in the rain season, causing difficulty in travel.

Environmental and Social Impact Assessment (ESIA) 30

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Figure 15. Status of the dam face in Phuc Tho Farm reservoir (Ri Hil lake)

Figure 16. Status of the upstream slope in Phuc Tho Farm reservoir

Figure 17. Status of the downstream slope in Phuc Tho Farm reservoir

Environmental and Social Impact Assessment (ESIA) 31

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Figure 18. Status of the entrance to the spillway

Figure 19. Status of the spillway

Figure 20. Status of the conveying channel behind the spillway (ii) Construction items in Phuc Tho Farm reservoir 91. Dam: (i) Dam crest: Reinforce the dam crest; structure of the dam face as following: the lower layer is ballast stones type 2 with a thickness of 20cm, the upper layer is concrete M250, 18cm thickness. (ii) The upstream slope: being reinforced by cast in-situ reinforced concrete with the size of 2.0x2.0m, 12cm thickness, under slabs is the 15cm-thick ballast stone filter layer, and the 15cm-thick sand filter layer. (iii) The downstream slope: is replanted grass and arranged drainage trenches, at the dam body of the downstream slope and the intersection between the downstream slope and the hill shoulder, water intake ditches are arranged. (iv) Discharge equipment in the dam downstream is a pile of prismatic stones combined with compacted dry

Environmental and Social Impact Assessment (ESIA) 32

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province paving stones. 92. Spillway: Expand the spillway width to (Btr=) 2.0m in the form of Ophixerop spillway with structure of concrete and reinforced concrete M250. 93. Intake culvert: the intake culvert is newly constructed, in the right shoulder of the dam, with the total length of (L=) 29.75m. The culvert is structured with steel pipes D500 armored reinforced concrete, a valve gate and a tower house at the downstream side. 94. Operation and management works: (i) Construction road also being operation and management road: the total length of the route is 1.2km; the road width is 3.50m; the roadside width is 2x1.25m; the road surface width is 6.0m; the road is structured by concrete M250, 18cm thickness, the below is the nylon layer and the ballast stone layer with a thickness of 15cm; (ii) management house: is newly built, a grade IV house, area of 60m2. 5. Thanh Bach reservoir (i) Status of works 95. Dam: The elevation of the dam crest is +929.30 m. The elevation of the dam face changes unevenly from +927.00m to +928.75m, without wave walls. The surface has not been reinforced, now eroded, landslided, its width is narrowed. Besides, holes appear in many places, causing unsafe dam. 96. Upstream slope: The upstream slope has not been reinforced, has a slope coefficient of (m=) 2.0m, it is deformed and uneven, vegetation overgrows on it. 97. Downstream slope: The downstream slope has overgrowing grass, a coefficient of (m=) 1.5m, currently the earth dam slope in the downstream side is eroded at many positions, the slope coefficient is changeable, the left shoulder of the earth dam subsided at the position of the intake culvert and there is seepage flow. 98. Absorption and leakage: As on-site exanimated, absorption happened at the intake culvert position and two sides of the spillway. Currently there has not been monitoring equipment and the dam owner has yet to carry out permeability monitoring. 99. Spillway: (i) Entrance gate: Currently, vegetation overgrew in two sides of the spillway, sedimentation happened partly blocking the flow, the gate made of masonry was damaged completely. (ii) Spillway: the spillway was structured with concrete-armored mortar masonry, 15.0m width, as preliminary assessment, the spillway was seriously degraded. Spillway concrete was damaged, causing erosion and landslides to below the level at which the flow runs to the downstream side. There was no bridge across the spillway. The side walls and the bottom that had peeled mortar circuits, after long-term usage, were seriously deteriorated. Reservoir water absorbed through spillway sides, flowing in lines through the stone circuit that had mortar washed out. (iii) Water conveying slope: structure of walls and foundation was masonry, the foundation was concrete M200, 10cm thickness, has been degraded, it needs to be repaired and upgraded. There has been hollow in the spillway body, forming deep erosion holes, the surface was completely damaged, consequently the water could flow through in a line to the downstream side. (iv) Energy dissipation tank: structure of the tank was masonry, 15.0m wide, 15.0m long. Similar to the entrance gate, the entire energy dissipation tank was deposited, vegetation overgrew, the tank walls were broken, almost had no effect of energy dissipation when flood discharge.

Environmental and Social Impact Assessment (ESIA) 33

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Figure 21. Status of the spillway in Thanh Bach reservoir 100. Intake culvert: The culvert was a circular culvert D800mm without regulating valve. Currently, the culvert was completely damaged, behind the culvert was the about 130m-long conveying channel that was made of earth and now deposited. 101. Bottom discharge culvert and diversion channel behind the spillway: The bottom discharge culvert was a steel pipe D800mm armored by reinforced concrete with 2 valves regulating the downstream flow. Current culvert condition was good. Behind the culvert was a trapezoidal channel made of masonry conveying to a natural stream in downstream with (L=) 110m length, 1m width, (m=) 1 slope coefficient. The channel was currently in good condition. (ii) Renovated and upgraded items 102. Earth dam: (i) Move the center of the dam 1.0m to the upstream side; apply pressure structure for the upstream slope to ensure the minimum dam width; reinforce the dam face with stone concrete 1x2 M250, 18cm thickness; the lower layer is ballast stones type 2, 20cm thickness; build the parapet walls with a height of 60m. (ii) Upstream slope: being paved by cast in-situ reinforced concrete (M200) slabs with the size of (2.0x2.0x0.12) m, the upper is ballast sand filter layer and sand filter layer, each layer has a thickness of 15cm. (iii) On the downstream slope, grass is planted, drainage ditches are arranged and built in two sides of the dam shoulder and there are also intake ditches in the dam foot. (iv) Monitoring equipment: arranging a monitoring system and a light system. 103. Spillway: Rebuild the spillway in the form of wide crest, followed by the water slope and energy dissipation tank, with structure of reinforced concrete M200. 104. Intake culvert: Rebuild the culvert using steel pipes armored by reinforced concrete M300 with a culvert length of 16.95m and install downstream valves. 105. Operation and management works: (i) Construction road is also the operation, management road: the route length is 406.55m; the roadbed width is 5.0m; the surface width is 3.5m; structure of the road surface is concrete M250, 18cm thickness, the lower layer is a nylon layer and a ballast stone layer type 2, 20cm thickness. (ii) Management house: a grade IV house, area of 60m2. 6. Reservoir No.4 (i) Status of works in Reservoir No.4 106. Earth dam: The dam crest has not been reinforced, the average crest width was 5.0m. Two edges of the crest had grass overgrown, affecting aesthetics, facilitating for animals to develop and burrow. There was no light on the dam crest and dam milestone system, resulting in difficulty in monitoring work, dam management in the flood season at night. 107. The upstream slope: has not been protected so was seriously eroded. Environmental and Social Impact Assessment (ESIA) 34

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 108. The downstream slope: has not been reinforced so it was uneven, landslided, cultivated for planting coffee, vegetation overgrew. There was no ditches for surface water drainage, hence some trenches appeared due to water flowing and causing erosion. There was a drainage work but it was damaged, did not guarantee drainage ability. 109. Spillway: The spillway was arranged at the dam right shoulder, in the form of wide crest, no valve gate, width of (Btr=) 7.5m, structure of in-layer mortar, face reinforced by concrete with 10cm thickness. On the spillway, a traffic bridge was arranged that was made of reinforced concrete. The bottom of the entrance and the spillway body were broken; wing walls at two sides were permeable, leak, flowing in lines. Behind the water slope was an energy dissipation tank which was eroded, damaged, the conveying channel was deposited, blocking the flow. 110. Intake culvert: Currently there was no intake culvert across the dam, thus water intake and draining off the reservoir were difficult when it is necessary to repair the constructions in depth. 111. Management road: Currently there was only one road connecting the asphalt road to the left shoulder of the dam and it was made of earth, had an average width of 3-5m, a length of 272.00m, great slope, muddy and difficult to travel when raining. 112. Management house: There was no management house.

Figure 22. Status of the dam body in Reservoir Figure 23. Spillway as well as traffic bridge in No.4 Reservoir No.4 (ii) Construction items in Reservoir No.4 113. Main dam: (i) Lift up the dam to the design elevation; reinforce by cement concrete M250, 18cm thickness on compacted ballast stones type 2, 20cm thickness; build parapet walls, install road milestones. (ii) Upstream slope: Apply pressure structure for the dam slope, reinforce by paving slabs of reinforced concrete M200, size of 2.0x2.0m, in-situ cast, thickness of 12cm, the upper layer is the sand filter layer with thickness of 15cm. (iii) Downstream slope: dig out parts of being cultivated or disposed waste, apply pressure structure for the dam positions that were eroded, subsided, planted with grass, implement slope drainage by masonry concrete ditches in the downstream side, install drainage equipment for the dam body using a compacted stone pile. (iii) The downstream slope: Removed the slope that the people disposed waste, apply pressure structure for positions that were eroded, landslide, and then plant grass, apply drainage of concrete ditches in the downstream: build a drainage in the dam body by a pile of dewatered stones in combination with slope pressure structure. 114. Spillway: Rebuild the dam combined to be the intake culvert. 115. Operation and management works: (i) Operation and management road: total length of 272m; roadbed width of 5.0m; surface width of 3.5m; road structure of concrete M250, 18cm thickness, the lower layer is the nylon layer and ballast stone layer type 2, 20cm thickness. (ii) Management house: grade IV house, area of 100m2.

Environmental and Social Impact Assessment (ESIA) 35

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 7. Loc Thang reservoir (i) Status of works in Loc Thang reservoir 116. Earth dam: The elevation was lower than the design elevation, thus affecting dam safety when flooding as examined frequency. The dam crest is a part of the road serving for production and transportation of agricultural products, if it is not reinforced, it will be difficult to travel, operate, manage and rescue the dam. 117. Upstream slope: With current structure, the upstream slope when waves act on it could continue to be eroded, resulting in unsafe dam. 118. Downstream slope: Vegetation grew densely on the downstream slope, these kinds of trees had deep roots and became too dense, increasing the risk of unstable permeability and facilitating the development of burrowing animals and termites. Dewatering stone pile did not meet requirements because it was entirely damaged. On the downstream slope, there was only drainage ditches for the dam foot, no drainage ditches for the dam head. There was no sign of the drainage equipment at the dam body and at the attic part. The downstream was planted grass to protect the slope, during using process, drainage ditches were deposited, filled with sediments, no longer able to discharge water when raining. 119. Spillway: (i) Overflow part: the stone part after long-term usage has been deteriorated, the quality of concrete was not ensured. (ii) Traffic bridge: The bridge abutment made of masonry stone has been degraded due to long-term usage without maintenance, causing unsafe travel. Bridge girder was high, thus affecting flood discharge capacity of the spillway. 120. Water slope: The water slope was made of concrete (the bottom) combined with masonry (wall). The concrete part below the bottom at the section after changing direction was completely damaged and the masonry stone part was eroded almost the whole left wall and partly the spillway foundation. 121. Culvert under the dam: As designed, the culvert is the box culvert made of reinforced concrete M200. Since being used, it was rarely operated, the valve tower house was broken due to humanity activities. The whole balcony and doors were broken to steal steel parts and other materials. Therefore, it needs to be entirely rebuild. 122. Work bridge: The work bridge was damaged, needs to be rebuilt. 123. Opening and closing equipment: The opening and closing equipment was broken, did not work, and need to operate manually. The valve gate had warped, thus it was unable to close tightly, and quite much water could flow through it. 124. Management road: Road to Loc Thang reservoir from National Road 20: the road is a deteriorated asphalt road, the section across Loc Thang reservoir was 700m long, made of earth, steep, very difficult to travel when raining. The management road was the earth road in bad condition, difficult to travel in the rain season. Hence, it is necessary to repair and upgrade to ensure preferable conditions for operation and management work and dam rescue work in the case of occurring incidents.

Environmental and Social Impact Assessment (ESIA) 36

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Figure 24. The dam crest in Loc Thang reservoir, view from upstream

Figure 25. Status of the spillway and traffic Figure 26. Status of the water slope in Loc road in Loc Thang reservoir Thang reservoir

Figure 27. Status of the valve tower house and the opening/closing valve in Loc Thang reservoir (i) Construction works in Loc Thang reservoir 125. Dam: (i) Uplift the dam crest to ensure the design elevation; reinforce the dam crest by concrete M250, thickness of 18cm, the upper layer is the compacted ballast stone layer type 2, thickness of 20cm. (ii) Upstream slope: Apply pressure structure with m = 2.75, reinforce the slope by cast in-situ reinforced concrete slabs M200 with size of 2.0x2.0m, thickness of 12cm, on this slab is the filter sand layer, 15cm thickness. (iii) Monitoring equipment: arrange the equipment of monitoring permeability, subsidence, dam displacement.

Environmental and Social Impact Assessment (ESIA) 37

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 126. Spillway: Rebuild the spillway combined to be a culvert; break down the old spillway and culvert, construct a new spillway combined to be a intake culvert; the form of the spillway being Creager - Ophixerop type II; followed by an energy dissipation tank, and a channel leading to the stream; with structure M300. 127. Operation and management works: (i) The construction road is combined to be the operation and management road: reinforce the road surface with a length of 260.18m, a roadbed width of 5.0m, a road surface width of 3.5m, structure of the road surface is concrete M250, 18cm thickness, below is the nylon layer and the ballast stone layer width a thickness of 20cm. (ii) Management house: grade IV house, area of 100m2. 8. Da Bo B reservoir (i) Status of works in Da Bo B reservoir 128. Dam face: The elevation of the dam crest changed in a range between 141.92m and 142.0m, a length of 160m, with parapet walls in two sides. The dam surface was reinforced by ballast stones, eroded and landslided. The downstream earth dam slope was eroded in many positions, the left shoulder of the earth dam at the position of the intake culvert was landslided. The dam body was subsided toward the spillway. 129. Upstream slope: The upstream slope was reinforced by concrete with the slope coefficient m=1.5. Through operation and exploitation, the concrete slabs were deformed due to wave effects, many positions were uneven. 130. Downstream slope: The downstream slope had overgrown grass, the slope coefficient was (m=) 2.0m. Currently, the downstream slope was eroded at many positions, the slope coefficient was unequal, and the left shoulder at the position of the intake culvert was subsided with permeable lines. Near the dam foot, downstream side, the people dug a pond to breed fishes, endangering the dam safety in the flood season. 131. Absorption and leakage: Sign of absorption appeared at the intake culvert and two sides of the spillway with fine permeable lines. Currently, there was not monitoring equipment and the investor has yet to organize permeability monitoring. 132. Spillway: The spillway was in the form of the free overflow pragmatic spillway, the elevation of overflow threshold was +139.15m, Btr=15m, with the structure of reinforced concrete. The prior yard was (L=7m) long, reinforced by concrete, broken. Behind the spillway was an energy dissipation L=10m made of reinforced concrete that was broken and deposited. The next step is the earth ditch leading to the existing stream. 133. Intake gate: The yard of the spillway intake was structured by concrete with a length of about 7m, deposited, limiting the ability of flood discharge. The long-term concrete structure was broken, eroded in many positions and there was no wing walls. 134. Overflow: Structure of overflow was reinforced concrete with wing walls at two sides, concrete was peeled, the steel part was exposed, and two sides adjacent to wing walls were cracked. 135. Energy dissipation tank and diversion channel: The energy dissipation tank was made of reinforced concrete, deposited, obstructing the flood discharge process. This issue will be recovered after being repaired and upgraded. 136. Intake culvert: Intake culvert was the form of circular culvert D400, made of steel armored by concrete, with a culvert length of 17m. Following the culvert was the conveying channel made of reinforced concrete, size of BxH=0.4x0.5m.

Environmental and Social Impact Assessment (ESIA) 38

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Figure 28. Status of the dam body in Da Bo B Figure 29. Status of the upstream slope in Da Bo B reservoir

Figure 30. Some fish ponds of households in Figure 31. Status of the energy dissipation tank the downstream side of Da Bo B reservoir in Da Bo B reservoir

(ii) Construction works in Da Bo B reservoir 137. Dam: (i) Apply pressure structure toward upstream to ensure the minimum slope width B=5m, the dam crest was reinforced by concrete M250, 18cm thickness, the lower layer was the ballast stone layer type 2, 20cm thickness; build upstream wave walls. (ii) The upstream slope had the coefficient of m=2.5; the upstream slope was reinforced from the dam face to the elevation of the cut-off dike being +136.75m, using cast in-situ concrete M200, size of 2x2x0.12m, the lining layer was ballast gravels and sand, 15cm thickness. (iii) The downstream slope had grass planted and drainage trenches. (iv) Monitoring equipment: arrange a system of monitoring water level. 138. Spillway: Reinforce the broken spillway, the form of the spillway was pragmatic combined to be a traffic and operation road with the elevation of 139.15m. The length of the spillway was (L=) 6m. The spillway width was (Bt=) 20m, the bridge across the spillway was 22m long and 2.2m wide. 139. Intake culvert: Dismantle the old culvert, construct a new culvert with structure of steel pipe Ø400, armored by reinforced concrete M300, thickness of 20cm, length of (L=)26.1m, install a opening and closing valve. 140. Operation and management works: (i) Length of (L=)117.5m, road width of (B=)3.5m, structure of concrete M250, 18cm thickness on a nylon layer and a ballast stones layer type 2, 20cm thickness. (ii) Management house: IV house, area of 60m2.

2.2.2. Construction methods 141. The table below presents construction methods for each reservoir.

Environmental and Social Impact Assessment (ESIA) 39

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Table 6. Construction methods of reservoirs No. Name of Construction methods reservoir 1 Phuc Tho 1. The plan of construction flow conveying Farm reservoir Based on weather conditions, flows, construction site, construction workload, etc. the old culvert is used to convey water flow for Phase I, for Phase II, the water flow is conveyed through the new culvert, the remaining dam part is constructed. Focal construction works are constructed in the dry season with the plan of conveying flow as following: To prepare for constructing head construction works, compensation, site clearance, site clean and other preparation works are implemented. - Phase I: from 15 December to 31 March: + 01 January - 15 January: site clean and other preparation works for constructing head construction works. + 16 January - 05 March: Construct the spillway, at this stage, the reservoir still have functions of water supply and water holding for irrigation areas. Construct the dam section from D0-:-D5; D7-:-D14. + 25 February - 31 March: Drain water in the reservoir to the elevation of the dead water level (1058.50 m), Construct the new culvert. - Phase II: from 01 April to 30 June: + 01 April - 31 April: Build a dam surrounding upstream and downstream; to convey flow through the new culvert, construct the earth dam section from D5 - D7. + 31 April - 30 June: Complete the remaining works of the head construction works. To sum up, the focal construction works will be constructed completely in the dry season, to avoid cultivation effects in the beneficiary area, it needs to change crop seasons to be earlier than usual to ensure water supply for plants. 2. Plan of construction technique for main works a) Earth dam: Mechanical construction is essential. - Digging the dam foundation and digging weathering material yards: using bulldozers in combination with excavators and vehicles for construction. - Digging cutoff dike: excavators and transport vehicles using a mechanical construction line. - Damming work: using excavators in borrow pits, using transport vehicles to transport bulldozers and compacted machines to the dam face. - Manually repair cutoff dike, compact soil at the abutments using tamping rammers before constructing paving structures. b) Spillway - Digging the foundation soil, using excavators to take the soil and then the soil is transported by a vehicle to fill up the area behind the dam downstream. - Concreting the spillway: Using a concrete mixer with an average volume to cast in-situ. Compacting concrete by a compacting machine. - Paving stone construction is implemented manually. - Backfilling soil is on-site soil, manual, compacting manually and

Environmental and Social Impact Assessment (ESIA) 40

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Name of Construction methods reservoir mechanically. c) Intake culvert Soil excavation is implemented manually and mechanically, compacting soil by tamping rammers, paving work is done manually. d) Local road combined to be the management road - Before construction, it needs to implement site clearance, install milestone piles and digging the organic soil layer, then transporting it to the disposal site as the approved dossier. - Using a small excavator to dig soil, the transport vehicle is the one with the load of less than 10 tons to transport along the channel bank to the embankment site, leveling manually. - Concrete: Using a mobile mixer with the volume of 250 - 400 liter, pouring manually and compacting by a mechanical compactor. 2 Da Sa 1. Construction flow conveying reservoir Focal works are planed for construction within 1 year as below. a. The first year - Flow: + Dry season: Flow is conveyed through the conveying channel and intake culvert combined to be the bottom discharge. + Flood season: The flood flow happening in the main crop season, will be conveyed through the old spillway. - Tasks: + From 15 January: embankment of the upstream cofferdam to the elevation of +917.00m, digging a conveying channel, as well as initiating foundation excavation and the intake culvert combined to be the bottom discharge. + Digging the foundation and constructing completely the water intake culvert combined to be the new bottom discharge (D=0.6m), embanking the dam, completing the intake culvert combined to be the bottom discharge. + Digging and removing weathered parts of the upstream dam foundation, applying pressure structure, reinforcing the upstream slope up to the elevation of the dam crest. + Constructing the pile of dewatered stones, embanking the downstream dam, constructing drainage trenches, plating grass on the downstream slope and other sub-items. b. The second year (half of year) - Flow: +Dry season: The flow is conveyed through the intake culvert combined to be the new bottom discharge (D=0.6m) that is expected to be in completion in the first year to downstream. - Tasks: + Constructing the remaining dam parts up to the elevation of the dam crest, constructing and completing the dam. + Constructing the spillway and complete construction.

Environmental and Social Impact Assessment (ESIA) 41

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Name of Construction methods reservoir + Constructing and completing the entire structure. + Continuing to construct the overflow downstream channel and the intake culvert combined to be the bottom discharge. 2. Construction methods of structure items a) Earth dam construction - Excavators, bulldozers, workforce, equipment and spare parts are provided fully and used properly. - Work of paving and concreting: Using manual methods. b) Spillway construction - Foundation excavation: Motorized loading, unloading and transporting to the disposal site. - Casting parts of the spillway motorized including auto cranes, pumps and manual operation. Using specialized concrete mixing vehicles. - Assembling and welding reinforcement as stipulated. - Curing concrete as prescribed. 3 Suoi Dia - Cay Xoai reservoir is planed to be constructed first, then Suoi Dia reservoir. Cay Xoai 1. Cay Xoai reservoir inter-reservoir a. Phase I - Emptying the reservoir via a culvert that is a “buy” pipe D40cm, conveying the construction flow through the culvert. - Embanking a dike surrounding the upstream to prepare for spillway construction, the dike has an elevation of +975.00m, H=1.24m, B=1m, m=1. b. Phase II - Collapsing the old spillway, utilizing wall stones of this spillway for a pile of dewatered stones in the dam downstream, dismantling guardrails of the traffic road that was construction barriers; implementing spillway foundation excavation, installing traffic signs, signal lights and treating weak dam basement (type 1) using the method of timber pile jacking. - Due to the road on the Cay Xoai reservoir dam being the inter-commune road, traffic flow is rather large, however, the position at Cay Xoai reservoir is very narrow, the dam is high, and hence it is not able to build a bypass. Therefore, to address this issue, people and rudimentary transport vehicles should use the bypass concrete road in Reservoir No.7. All vehicles of a large load capacity are not allowed to cross the concrete road in Reservoir No.7, but use Tu Duc Trong road instead during the dam construction process. - Collapsing the dike surrounding the upstream, conveying construction flow through the bottom discharge culvert inside the spillway body. - Peeling weathered dam parts, transporting weathered soil to the disposal site with a distance of 4km, applying pressure structure for the dam slope, curbing the dam foot, paving the dam slope, reinforcing the dam crest. - Embankment of two sides of the spillway and the dam crest using tamping rammers combined with mechanical equipment. - Constructing the pile of dewatered stones, paving the downstream slope. - Asphalting to recover the traffic road, installing guardrails, leveling the

Environmental and Social Impact Assessment (ESIA) 42

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Name of Construction methods reservoir construction site, completing remaining items to handover the structure and bring it into use. 2. Suoi Dia reservoir a. Phase I - Digging the dam of Suoi Dia reservoir to lower the reservoir water level downward to Cay Xoai reservoir and emptying the reservoir via the bottom discharge culvert in the spillway body. For each time of excavation, the excavated soil layer is 0.3m deep, 1m wide. Continuing to excavate until water in the reservoir is empty. - Digging a channel to convey the construction flow. - Conveying the flow through the channel, installing a “buy” pipe D100cm at the end and the beginning of the channel to embankment a dike surrounding the upstream combined to be a bypass (the elevation of the upstream surrounding dike top being +979.00m, B=3m, H=2.57m, m=1) and a dike surrounding the downstream (the elevation of the upstream surrounding dike top being +976.30m, B=1m, m=1). + Implementing foundation excavation of the culvert below the dam, treating the weak basement of below-the-dam culvert type 1 using the method of timber pile jacking. + Constructing items of the below-the-dam culvert. b. Phase II - After construction of culvert items, implementing convey of the flow through the culvert. - Peeling weathered dam parts, building a surrounding embankment to dig an upstream cut-off wall in order to treat permeability type 1, and peeled weathered soil is transported to the disposal site with a distance of 4km. - Constructing an embankment of the upstream cut-off wall, applying pressure structure for the dam slope as designed and implementing embankment for two sides of the culvert, the flow conveying channel, the culvert top using tamping rammer combined with mechanical equipment. - Curbing the upstream dam foot, putting in the filter ballast stone layer and the filter sand layer to install paving slabs for the slope. - Constructing the pile of dewatered stones, dry paving for the slope, and the drainage trench of the dam slope. - When the culvert is strong enough, collapse the surrounding dike in the upstream and downstream sides to open the access to the tea factory via the dam crest. - Constructing parapet walls of the downstream dam crest, wave walls; reinforcing the dam face by concrete, constructing 30m of the downstream spillway. - Planting grass on the downstream slope, completing remaining items of the culvert and other items, leveling the site to handover the structure and bring it into use. 4 R’lom 1. Plan of conveying the construction flow reservoir Based on weather conditions, flow, construction site, construction workload, etc., using the old water intake to convey the flow for Phase I, using the new intake for Phase II, constructing the remaining dam parts. The focal

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Name of Construction methods reservoir construction works are implemented in the dry season with the plan of conveying the flow as below: Implementing compensation for site clearance, site cleaning and other preparation work to prepare for the construction of focal works. - Phase I: 15 December - 31 March: + 15 December - 15 January: for the focal works construction, implementing site clearance and other preparation work. + 16 January - 25 February: Draining the reservoir to the elevation of +1062m, conveying the flow through the old culvert for construction. Constructing the spillway, at this period, the reservoir still has functions of water supply and water holding for the irrigation area. + 25 February - 31 March: Draining the reservoir to the elevation of the dead water level of the old reservoir (+1058.50m), conveying the flow through the old culvert for construction, constructing the new intake, constructing the earth dam section of C5-C9. - Phase II: 01 April - 30 June + 01 April - 31 April: Building the downstream surrounding dike, to convey the flow through the new culvert, constructing the dam section of the reservoir bedding and backfilling the dam to the remaining section. + 31 April - 30 June: Completing the remaining items of the focal works. To sum up: The focal works are constructed entirely in the dry season, to avoid the effect on cultivation, the local people should change the crop seasons to be earlier than usual to ensure sufficient water supply for crops. 2. Technical plan for constructing the main works a) Earth dam: Mainly using mechanical equipment for construction. - Excavating the dam foundation and weathered parts of the borrow pit: using bulldozers, excavators and transport vehicles for construction. - Digging the dam cut-off wall: using excavators, transport vehicles and mechanical construction line. - Dam embankment: using excavators at the borrow pit, transporting this excavated materials to the dam face, using it to level and compact the face by bulldozers and compactors. - Completing the cut-off wall manually, compacting soil at the cross- sections by tamping rammers before constructing paving structures. b) Spillway - Excavating the foundation, taking excavated soil to backfill the area behind the dam downstream side using excavators and transport vehicles. - Concreting the spillway: Using a concrete mixer with the medium volume to cast in-situ. Compacting the dam by a mechanical compactor. - Constructing paving masonry manually. - Backfilling soil is on-site soil, leveling and compacting manually in combination with machines. c) Intake sluice Digging manually and mechanically, compacting two sides of the sluice

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Name of Construction methods reservoir manually and mechanically, compacting by tamping rammers, paving work is done manually. d) Local road combined to be the management road - Before construction, site cleaning, installing construction boundary piles, excavating organic soil layers, transporting it to the disposal sit as the approved dossier. - Digging by a small excavator, using a below 10 tons dump truck to transport excavated materials along the channel to the embankments, then implementing completion work manually. - Concrete: a concrete mixer, type of 250 - 400L, casting manually and compacting by a compactor. 5 Thanh Bach 1. Conveying the construction flow reservoir The focal works is planned for construction in one dry season as below. a) Phase 1: November - May - Constructing the management route with a length of 406.55 m. After finishing, the route from the National Road 20 (NR20) to the work will be the transporting road for construction materials, equipment and machinery. - Construction site: Building a surrounding dike from the pile K01 to KC2, the road from NR20 to the old sluiceway with an average width of 3 - 4m is the transporting and constructing road, the distance to the work is 5km, the transport vehicle is the 5-ton type, and the excavator is a 0.8m 3 machine. So, the whole water flow will be conveyed through the old sluice down to the dam downstream side. After completing the surrounding dike, construction of the dam and the spillway will be commenced.

- Main construction works: Excavating the spillway, the energy dissipation tank, the channel behind the tank, the discharge channel and concreting for completion. Spillway construction needs to be implemented detailedly and carefully. In the meantime, foundation excavation and construction of the earth dam from the right shoulder of the spillway route to the pile 8B of the dam route are also implemneted. To sum up: At the end of Phase 1, completed works include the management route, the spillway route, the management house, the route from the right shoulder of the spillway route to the pile 8B of the dam route. b) Phase 2: Constructing from June to the end of July - Collapsing the surrounding dike Phase 1 and transporting waste to the disposal site. - Construction site: Backfilling the upstream surrounding dike from Pile K0 to Pile K01, the road from NR20 to the old sluiceway with an average width of 3 - 4m is the road of transporting soil for the surrounding dike, the distance from the borrow pit to the work is 5km, the transport vehicle is the 5-ton type, the excavator is a 0.8m3 machine. So, the whole water flow will be conveyed through the spillway route that was completed in Phase 1. After completing the upstream surrounding dike, the intake sluice and the remanining dam section from Pile 1B to the left shoulder of the spillway will be commenced. 2. Methods of constructing the structure items

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Name of Construction methods reservoir a) Construction of the earth dam, water intake sluice - Excavators, bulldozers, workforce, specialized equipment and spare parts are used in proper combination. - Work of paving and concreting: manual construction. b) Construction of the spillway - Foundation excavation: Mechanical loading, dump transport trucks to the disposal site. - Concreting parts of the spillway mechanically and manually. Using specialized trucks for transporting and concrete mixing. - Erection and welding of reinforcement as prescribed. - Concrete curing as prescribed. 6 Reservoir 1. Measures of draining the foundation pit No.4 The foundation pit of the focal works is constructed in the dry season, hence amount of rainwater and underground water are small. The foundation pit is at the high position compared to the natural topography in the downstream so foundation pit water is able to drain naturally. 2. Construction of the earth dam Work of peeling the dam slope The old downstream slope is reinforced by sodding and a downstream stone pile. Peeling the face layer is done manually, waste soil is transported to the disposal site with a distance of 30m from the dam foot. Work of embankment Work of excavation and transporting soil to the dam is carried out using a 1.25m3 excavator and a 7-ton dump truck. Work of spreading soil and compacting is done manually. Work of concreting Measures of concreting the dam slope frame is mainly manual construction. Mobile mixer is small, arranged near the construction location. Work of spreading, leveling and compacting is by manual. Work of masonry paving Materials are transported by a 7-ton truck. The mortar mixer machine is a 250-liter one. Paving is done manually. 3. Spillway Work of foundation excavation For the foundation excavation work, a part of the foundation pit is excavated by a 1.25m3 excavator, another part is excavated manually. The excavated materials are transported by a 7-ton truck to the disposal site in the downstream side. Work of concreting Construction methods are mainly by manual. Mobile mixer is small, arranged near the construction location. Work of spreading, leveling and compacting is by manual. 4. Methods of constructing the intake sluice Structure of the intake sluice is reinforced concrete. Construction method is by manual. The sluice tower is constructed manually and mechanically.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Name of Construction methods reservoir 5. Methods of constructing the management road Work of foundation excavation Digging the construction road up to the elevation of the design road surface by a 1.25m3 excavator, excavated soil is used to embank the cofferdam and embankment areas on the road, the remaining is transported to the disposal site. Digging a road mold with an 110CV bulldozer, moving soil out of the foundation pit. Work of constructing the ballast stone layer Ballast stones are transported to the pouring location by a truck, leveling by a bulldozer and compacting by a 9-ton compactor. Work of concrete construction Concrete construction is mainly by manual. Mobile mixer is small, arranged near the construction location. Work of spreading, leveling and compacting is by manual. 7 Loc Thang 1. Measures of draining the foundation pit reservoir The foundation pit of the focal works is constructed in the dry season, hence amount of rainwater and underground water are small. The foundation pit is at the high position compared to the natural topography in the downstream so foundation pit water is able to drain naturally. 2. Construction of the earth dam Work of peeling the dam slope The old downstream slope is reinforced by sodding and a downstream stone pile. Peeling the face layer is done manually, waste soil is transported to the disposal site with a distance of 30m from the dam foot. Work of embankment Work of excavation and transporting soil to the dam is carried out using a 1.25m3 excavator and a 7-ton dump truck. Work of spreading soil and compacting is done manually. Work of concreting Measures of concreting the dam slope frame is mainly manual construction. Mobile mixer is small, arranged near the construction location. Work of spreading, leveling and compacting is by manual. Work of masonry paving Materials are transported by a 7-ton truck. The mortar mixer machine is a 250-liter one. Paving is done manually. 3. Spillway Work of foundation excavation For the foundation excavation work, a part of the foundation pit is excavated by a 1.25m3 excavator, another part is excavated manually. The excavated materials are transported by a 7-ton truck to the disposal site in the downstream side. Work of concreting Construction methods are mainly by manual. Mobile mixer is small, arranged near the construction location. Work of spreading, leveling and compacting is by manual. 4. Methods of constructing the management road

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Name of Construction methods reservoir Work of foundation excavation Digging the construction road up to the elevation of the design road surface by a 1.25m3 excavator, excavated soil is used to embank the cofferdam and embankment areas on the road, the remaining is transported to the disposal site. Digging a road mold with an 110CV bulldozer, moving soil out of the foundation pit. Work of constructing the ballast stone layer Ballast stones are transported to the pouring location by a truck, leveling by a bulldozer and compacting by a 9-ton compactor. Work of concrete construction Concrete construction is mainly by manual. Mobile mixer is small, arranged near the construction location. Work of spreading, leveling and compacting is by manual. 8 Da Bo B 1. Conveying the construction flow reservoir The focal works are planned to complete in 2 years (construction in two dry seasons) as below. a) Phase 1: - Flow: the flow is directed through the directing sluice in combination with the flow directing channel. - Tasks: + Foundation excavation and completing the flow directing sluice (D=1.2m) and the flow directing channel. + Embanking the upstream cofferdam to the elevation of 140.5m. + Digging, embanking the cut-off wall, peeling weathered parts of the dam, embanking the dam. + Constructing the intake sluice and the discharge channel behind the sluice, the construction and management road, the operation and management house, other items of construction support. + Constructing the spillway. b) Phase 2: - Flow: + Dry season: The flow is directed through the intake sluice (D=0.4m) that will be completed in the first year in the downstream side. + Flood season: The flow is directed through the completed spillway. - Tasks: + Constructing the remaining section of the dam. + Constructing and completing the remaining section of the spillway. + Completing the entire structure. 2. Methods of constructing the structure items a) Construction of the earth dam, water intake sluice - Excavators, bulldozers, workforce, specialized equipment and spare parts are used in proper combination. - Work of paving and concreting: manual construction. b) Construction of the spillway

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Name of Construction methods reservoir - Foundation excavation: Mechanical loading, dump transport trucks to the disposal site. - Concreting parts of the spillway mechanically and manually. Using specialized trucks for transporting and concrete mixing. - Erection and welding of reinforcement as prescribed. - Concrete curing as prescribed. Construction of the management road and the management house - Foundation excavation, foundation embankment. - Concrete M250 for the road surface. - The ballast and gravel stones type II. - Paving: Mainly constructing by manual. 2.2.3. Summary of auxiliary works A. Borrow pit and disposal site a. Volume of digging and embankment soil 142. The volume of digging and embankment soil of reservoirs as below. Table 7. Volume of digging and embankment soil Volume (m3) No. Name of works Digging soil Embankment soil Total 1 Suoi Dia - Cay Xoai inter-reservoir 16,457 12,639 29,096 2 R’Lom reservoir 9,257 19,312 28,569 3 Da Sa reservoir 14,680 11,585 26,265 4 Phuc Tho Farm reservoir 8,157 8,112 16,269 5 Thanh Bach reservoir 10,440 12,411 22,851 6 Reservoir No. 4 12,017 7,439 19,456 7 Loc Thang reservoir 6,906 6,318 13,224 8 Da Bo B reservoir 13,551 16,769 30,320 Total 91,465 94,585 186,050 Resource: Presentation of the basic design B. Location of the borrow pit and the disposal site 143. Borrow pit: Embankment soil was excavated soil, however some types of soil do not meet the technical requirements. Therefore, embankment soil was taken from borrow pits near the construction site in a distance between 200m and 2km from the construction site. The area of borrow pits belongs to communal PCs in the project area. The investor has conducted necessary negotiations for the local about usage of these borrow pits. (The minute of the disposal site is in Annex 6 of this report.) 144. Disposal site: Redundant soil from construction work will be disposed at the disposal site near the structure, the disposal site is under the management of communal PCs of the sub-project. The investor has conducted necessary negotiations for the local about usage of disposal locations. (The minute of confirming the disposal site is in Annex 6 of this report.) 145. Locations of borrow pits and disposal sites are presented in Table 8.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Table 8. Locations of borrow pits and disposal sites No. Name of Borrow pit/ Location/supply Distance - Route reservoirs Disposal site source 1 Suoi Dia - Cay Borrow pit The bedding of Suoi - Distance of 1km; Xoai reservoir Dia - Cay Xoai - Transporting on the route reservoir, under the surrounding the reservoir. management of Tu Tra PC. Land of the reservoir bed in the dry season is the vacant land. Disposal site Lac Thanh area, Tu - Distance of 5km; Tra commune, - Transporting on the inter- managed by commune route, surrounding communal PC. the reservoir. Vacant land with only shrubs and grass. 2 R’Lom reservoir Borrow pit The land piece of - Distance of 1km; Mr. Chru Jang Kha, Disposal site - Transporting on the route to R’lom village, Tu the existing reservoir. Tra commune. Vacant land with only shrubs and grass. 3 Da Sa reservoir Borrow pit Village 7, Lien Ha - Distance of 5km; commune, managed Disposal site - Transporting on the inter- by Lien Ha PC. commune route, surrounding Vacant land with the reservoir. only shrubs and grass. 4 Loc Thang Borrow pit The hill area being - Next to the dam foot in a reservoir exploited, of the distance of 50m - 100m. right shoulder of the da, managed by Loc Thang PC. Vacant land with only shrubs and grass. Disposal site Bare land in the dam - Next to the dam foot in a downstream, distance of 50m -100m managed by Loc Thang PC. Vacant land with only shrubs and grass. 5 Phuc Tho Farm Borrow pit Phuc Loc village, - Distance of 3km; reservoir Phuc Tho commune, Disposal site - Transporting on the inter- managed by Phuc commune route, surrounding Tho PC. Vacant the reservoir. land with only

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Name of Borrow pit/ Location/supply Distance - Route reservoirs Disposal site source shrubs and grass. 6 Reservoir No.4 Borrow pit Village 5B, Dinh - Distance of 3.7km; Trang Hoa - Transporting on NR20 and commune, managed the inter-commune road. by Dinh Trang Hoa PC. Vacant land with only shrubs and grass. Disposal site The dam - Distance of 500m; downstream, - Transporting on the road managed by surrounding the reservoir. communal PC. Vacant land with only shrubs and grass. 7 Thanh Bach Borrow pit Sub-area 611A, - Distance of 10 km; reservoir Gung Re commune, - Transporting on NR20 and managed by the inter-commune road. communal PC. Vacant land with only shrubs and grass. Disposal site Dong Lac cemetery, - Distance of 3.5km; Dinh Lac commune, - Transporting on NR20 and managed by the inter-commune road. communal PC. Vacant land with only shrubs and grass. 8 Da Bo B Borrow pit The right shoulder - Distance of 500m; reservoir of the dam, the - Transporting on the route downstream side, surrounding the reservoir. near the spillway, managed by communal PC. Vacant land with only shrubs and grass. Disposal site Brun village, Gia - Distance of 1km; Vien commune, - Transporting on the road managed by surrounding the reservoir and communal PC. the inter-village road. Vacant land with only shrubs and grass.

C. Volume of materials 146. Details of material volume serving for the sub-project are presented in the table below.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Table 9. Volume of main materials for the subproject

Name of reservoirs Construction Suoi Unit Phuc materials Dia - Loc Da Sa Tho R’lom Thanh No.4 Da Bo B Cay Thang Farm Bach Xoai Sand m3 2,158 2,227 1,995 2,790 1,906 1,482 1,581 1,825 Stone m3 3827 24,463 3,315 40,753 8,560 3,150 4,604 3,327

Asphalt kg 588 10,819 0 10,946 1,421 2,211 1,911 775

Steel kg 28,180 33,787 62,510 118,449 228,708 104,522 43,060 180,223 Concrete kg 581,220 917,968 489,475 1,225,225 1,092,205 526,411 567,883 913,990 Source: Presentation of feasibility study report for the subproject “Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 147. Fuel consumed is mainly diesel and estimated as the following table. Table 10. Estimation of fuel consumption in the construction process at site

Estimation of fuel consumption No. Items Liter of Liter/h m3/h Kg/h diesel 1 Da Sa reservoir 26,535 4.61 0.0046 4.01 2 Phuc Tho Farm reservoir 10,499 1.82 0.0018 1.59 3 Suoi Dia - Cay Xoai inter- 51,466 8.94 0.0089 7.77 reservoir 4 R’Lom reservoir 42,338 7.35 0.0074 6.39 5 Thanh Bach reservoir 66,929 11.62 0.0116 10.11 6 Reservoir No.4 10,919 1.90 0.0019 1.65 7 Loc Thang reservoir 9,975 1.73 0.0017 1.51 8 Da Bo B reservoir 2,596 0.45 0.0005 0.39 Note: 1 working shift is equivalent to 8 hours. Diesel density is 870 kg/m3 (Source: Petrolimex, 1994) Source: Presentation of feasibility study report for the subproject “Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 148. Fuel suppliers are located near the structure, other materials are provided from the center of districts within the project area with a distance ranged from 12km to 50km. Details of supply sources are presented in the following table.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Table 11. List of material supply sources No. Reservoir Material Supply source Iron, steel Thanh My town Asphalt Da Lat city Sand, stone, cement and Don Duong district other materials Suoi Dia - There is currently a power grid, but it is Cay Xoai necessary to have a generator to supply 1 Electricity inter- electricity for machines, lights, and living reservoir conditions in case of power outages. Using water of Suoi Dia and Cay Xoai reservoirs Water for construction. Using NR20, the district road (DR) 12 and in-site Traffic road earth roads.

Iron, steel Thanh My town

Sand, stone, cement and Don Duong district other materials R’lom reservoir is located near the residential Electricity area and already has national grid. Hence, the national grid can be used for construction. Water Using water of Da N’se stream for construction. R’lom 2 In the right side of the dam, 200m upward, there reservoir is a road with a width of 6m that can be the construction road, transporting materials from outside to the focal works and the channel system in the west. Traffic The channel system in the east: there is currently a road with a width of 6m that is being used to transport, travel, produce, this road leads to the position K1+00 on the eastern channel. This road can be used to transport materials and travel when constructing in the eastern channel. Purchase from neighboring quarries that is sufficient for construction, the distance of Block, dressed stones transport to the construction line is 15km on average. Purchase from neighboring quarries sufficiently Ballast stones for construction, the distance of transport to the Da Sa 3 construction line is 15km on average. reservoir Purchase in Da Vang river or neighboring quarries sufficiently for construction, the Constructing sand distance of transport to the construction line is 10km on average. Sand and gravel for Purchase at quarries or exploit from the stream filtration bedding.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Reservoir Material Supply source Cement, iron, steel and Purchase in Dinh Van town other materials To be proactive in construction and living Electricity activities, a mobile diesel generator should be prepared. Generator capacity should be 50kVA. Water for construction: using reservoir water. Water Water for living activities: Using water from drilled wells and dug wells. Inter-commune road: The road connecting to NR27 from the Dinh Van town center to Lien Ha commune, Lam Ha district, at the position of turning to Da Sa reservoir in Lien Ha commune. Traffic From there, following the inter-commune road to the beginning of the Da Sa dam with a length of about 3km, the road is spread gravel stones to near the dam.

Iron, steel Dinh Van town

Sand, stones, cement and Lam Ha district other materials The Phuc Tho Farm reservoir (Ri Hil lake) is located near the residential area with national Electricity grid. Hence, the national grid can be used to Phuc Tho serve for construction. 4 Farm Water Using reservoir water. reservoir Inter-commune road: The road connecting to NR27 from the Dinh Van town center to Phuc Tho commune, Lam Ha district, Lam Dong province. Traffic Using two existing earth routes accessing to the focal works and the eastern channel for transporting materials and equipment to construct the focal works, the western channel and the eastern channel.

Stone, sand, cement, steel Purchase in Di Linh town, with an average and other materials distance of 16km to the construction line.

To be proactive in construction and living Electricity activities, a mobile diesel generator should be Thanh prepared. Generator capacity should be 50kVA. 5 Bach Water for construction: Using reservoir water. reservoir Water Water for living activities: Purchase water of local people near the structure. NR20: The position of turning to Thanh Bach reservoir, from there, following the national road Traffic to the beginning of Thanh Bach dam with a length of 0.5km.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Reservoir Material Supply source

Purchase from existing quarries with good Sand, stone quality, large volume, with a distance of about 10km from the dam foot.

Purchase in Di Linh town with a large volume Cement, iron, steel and a distance of about 20km from the structure. The power grid through the structure can provide Electricity sufficiently electricity for construction. Reservoir 6 Water for construction: using reservoir water. No.4 Water Water for living activities: purchasing water from local people near the structure. The dam is in the road from NR20 to the asphalt inter-commune road. The management road has a relatively large Traffic slope, not ensuring safety for vehicles and machines to travel and transport down to the structure. The transportation of materials should be by manual.

Purchasing at Dai Lao quarry, with a distance of Sand, stone about 50km.

Purchasing in Loc Thang town with a large Cement, iron, steel column and a distance of 5km to the structure.

Loc Thang The power grid through the structure can provide 7 Electricity reservoir sufficiently electricity for construction. Water for construction: using reservoir water. Water Water for living activities: purchasing water from local people near the structure. Using the road from NR20 to the asphalt road in Traffic Loc Thang town and an earth road section in a distance of 500m to the dam foot. Purchasing in Cat Tien town or neighboring Stone, sand, cement, steel places to supply sufficiently for construction, the and other materials. transport distance to the structure line is 16km on average. To be proactive in construction and living Electricity activities, a mobile diesel generator should be Da Bo B 8 prepared. Generator capacity should be 50kVA. reservoir Water for construction: Using stream water. Water Water for living activities: Using drilled well water in the stream downstream. Dinh Tien Hoang road: The road has been Traffic asphalted until the distance of 132m from the beginning of the dam.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 2.2.4. List of machines and equipment to be used 149. Number of motorbikes mobilized for constructing project items depends on the construction progress of these working items, this number varies from time to time in the construction site. To meet the construction schedule, complete item workloads and based on topography of the construction site, the nature of the work and material supply, the main equipment and machinery for subproject construction are mostly equipment and machinery for constructing embankments, dam such as 5-ton/7-ton auto-dump trucks, 0.83 - 1.25m3 excavators, roller compactors, tamping rammers, 600m3/h diesel compressors, 110CV bulldozers and 1.6m3 excavators. Equipment, machinery for road construction, the management house, installing the monitoring system including 5m3 watering trucks, roller compactors, tamping rammers, 110CV bulldozers, 130 - 140CV spreading trucks, concrete mixers (11kWh electric power or battery), boats (if any). Details are as below. Table 12. List of the main machinery for the subproject construction No. Workforce and construction equipment Status 1 16-ton crawler crane New 70% 2 25-ton crawler crane New 70% 3 Tamping rammer New 70% 4 2.3m3 excavator New 70% 5 16-ton wheel-mounted compactor New 70% 6 9-ton wheel-mounted compactor New 70% 7 10-ton vibrating roller New 70% 8 50-60m3/h spreader New 70% 9 108CV bulldozer New 70% 10 75CV bulldozer New 70% 11 1.25m3 excavator New 70% 12 6m3 mixer New 70% 13 12-ton auto-dump truck New 70% 14 7-ton auto-dump truck New 70% 15 360m3/h gas compressor New 70% Source: Report of investment project 2.2.5. Demand of workers’ accommodations 150. The demand of construction workers for each item at peak time was about 205 people (of which, the number of local people is expected to be 60 people, accounting for 30%). Most of the subproject construction sites were quite convenient to gather materials as well as build an area of workers’ camps. Table 13. Estimated number of construction workers at the construction site No. Item Number of workers (people)1 1 Suoi Dia - Cay Xoai inter-reservoir 20 2 R’lom reservoir 35 3 Da Sa reservoir 25 4 Phuc Tho Farm reservoir 25 5 Thanh Bach reservoir 30 6 Reservoir No.4 20 7 Loc Thang reservoir 25

1 As per the report of investment project Environmental and Social Impact Assessment (ESIA) 56

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Item Number of workers (people)1 8 Da Bo B reservoir 25 Total 205 2.3. Expected activities before construction 151. Before construction, there are some activities such as geological survey, topographic survey, hydrological survey, meteorological conditions, geological exploration drilling, land acquisition landmark, and mine clearance. There is no demolition under the subproject, but clearing of vegetation is conducted by households with affected trees and crops. The waste from the clearing process will be collected and transported to the commune’s disposal site by the affected households. 152. The subproject design introduce options with taking into account scenarios and risks of climate change that may affect function of the construction items; and studies changes of weather factors (as mentioned in the status of the subproject area section) in recent time as a basis to chose the most optimal design. The impacts of climate change in the area in recent years are mainly related to changes in rainfall causing floods, landslides and drought. 2.4. Material transportation plan 153. Construction materials will be gathered in the construction site a month before commencing the construction. Construction materials will be transported to the construction site at the suitable time to avoid negative impacts on agricultural activities and living activities of the local people. Workforce, machines and material quantities are shown in the above sections. 2.4. Activities of operation and maintenance 154. Periodic monitoring of dam safety: After water is hold and the dam started to operate, the dam owner is responsible for carrying out dam safety monitoring, which is carried out by a competent independent expert who is not involved in the process of investigation, design, construction or operation of the dam. After smooth operation, examination of dam safety will be conducted regularly before and after the annual flood season, in accordance with the government’s Decree (No. 114/2018/ND-CP) of dam and reservoir safety management. 155. After completion of the works, the dam operation will be the responsibility of the dam owner and PPMU will no longer have responsibility for the dam. 156. Process of reservoirs and valve operation: The dam owner should prepare a regulation process of reservoir water, regulations on the storage and discharge of water in normal conditions and in emergency situations, and submit them to government management agencies who are competent to approve and arrange for implementation. The dam owner should develop and submit to authority agencies the document of the process to operate the valve gate of each construction (hereinafter referred to as structure operation). Other issues need to be done according to Decree No. 72/2007/ND-CP of the government about dam safety management. 2.5. Plan of dam safety 157. A dam safety report (DSR) will be prepared for subprojects as required in the WB’s safeguard policy on dam safety OP/BP 4.37. Objectives of the dam safety report are to present, analyze and offer recommendations about: a) all conditions possibly affecting dam safety and auxiliary works; b) impacts when the dam or the auxiliary works are broken/unable to regulate due to severe natural events, failure caused by humanity or structure; c) the (existing and) future institutional framework that is necessary to avoid or minimize adverse conditions for dam safety. 158. After completion of the review at the subproject screening stage, the CPMU of MARD needs to provide a DSR for each subproject identified in the project implementation phase and submit to PoE (the international consulting expert team of dam safety) and the World Bank for consideration. Reports should include findings and recommendations for any issue relevant to

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province safety and implemented necessary actions. Dam safety measures should be incorporated into the design, construction and operation of reservoirs. 159. Review and analyze safeness of the dam structure : The review and evaluation of dams and relevant works will include, but is not limited to, the following: - Review the surveying documents on the geological foundation and material sources. Attention should be paid at potential adverse effects that may occur due to surveyed geological characteristics. Assess unforeseen conditions and treatment measures to address issues relevant to safety and operation of the dam and associated structures. - Assess the suitability of the type of dam and spillway, the response of dam design, including proposed measures to treat the foundation, backfilling and selected parameters of capacity, permeability and measures of controlling floating pressure. Pay attention to safety opinions for any irregularities or occurred omissions and recommend necessary measures. - Assess stability, analyze intensity and safety factors under normal, abnormal and adverse conditions of earth dams and concrete dams, structure of spillway and water discharge works, including the identification of impact criteria for geology. - Consider factors of reservoir stability, landslide formation, waves and its effects on dam stability. - Consider hydrological calculation method to determine design flood of the project, reservoir line and size of the spillway. Review the design of the spillway including the flow conditions and energy dissipation structures. Evaluate discharge capacity of the spillway with respect to all design floods without risking the dam. - Consider intake and discharge facilities, including hydraulic design, emergency discharge capacity of reservoirs and sedimentation process. - Evaluate the design of the spillway and outlet control devices, including the selection of the number and type of main gates and valves, lifting equipment and other types of control devices. Special attention is given to the backup system to operate spillways with gates and water discharge works when coping with problems of operation and electricity. - Consider the design of flow diversion works, construction schedule, hydrology and risk factors related to flow diversion during the construction period and flow backfill in the stage of impoundment. - Consider the suitability of measuring instruments, especially instruments or milestone piles which are required for anticipating serious hazards or dam failure. - Review the operation, maintenance procedures and emergency response plan of the dam owner, including assessment of operation and maintenance factors under subprojects relevant to dam safety and capacity assessment of officials in charge of performing maintenance and regular inspection of structure safety. 160. Review and assess risks of dam safety: Beside of ensuring dam safety, the project should assess potential risks for the dam that may affect on the people and the environment in the downstream area of the dam, including associated works. Dam failure once occurs will cause serious consequences. In term of this content, in the preparation process of the project, as a part of DSR and ESMP, the investor of subprojects needs to conduct an assessment of potential risks for the downstream areas/residents. For large dams and high risks, in the preparation process, it needs to adequately collect data, including topographic surveys and downstream land use, to simulate a dam failure and downstream floods under different conditions/ scenarios for the preparation of an urgent response plan. Data collection from upstream dams and/or activities related to upstream may also be necessary for some dams. It should be also considered to prepare a plan and

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province implement a capacity building program for subprojects with pilot activities to promote active participation of local communities. Communities around the dam site can participate in daily monitoring, protect the dam against vandalism and engage in simple maintenance work. It should be considered to have a model with the participation of communities in activities of protecting the dam. Sedimentation and pollution of upstream water source are possibly serious issues for some river basins. Agencies of managing and operating dams should have a commitment of budgeting for dam operation and management and periodic dam safety inspections. 2.6. Progress of implementing subprojects 161. Total time to implement the project from 2019 to 2021 is presented in the following table. Table 14. Progress of implementing subprojects No. Work contents Implementation time 1 Conduct bidding and select contractors Quarter III, 2019 2 Install milestone piles for site clearance, implement January - February, 2020 compensation for trees and undertake clearing activities 3 Lower the reservoir water level, dismantle old March - April, 2020 constructions, build camps and warehouses 4 Upgrade earth dams and intake sluices May, 2020 - February, 2021 5 Construct houses of management and roads of management March - May, 2021 and operation 6 Construct spillways June - August, 2021 7 Complete installation of subproject equipment and test September - October, 2021 them. 8 Complete the whole project, gain acceptance of work, October - December, 2021 handover the works and put them into use

Source: Report of investment project 2.7. Investment capital 162. According to Decision No.1232/QD-UBND dated 06 June 2019 of PC of lam Dong province about approving the feasibility study report of this subproject with the total investment capital of VND 160,690,000,000 (One hundred sixty billion six hundred and ninety million Vietnam dong) including World Bank loans and counterpart fund of the provincial budget. Table 15. Investment capital No. Items Unit Value 1 Cost of construction VND 109,981,646,633 2 Cost of equipment VND 1,623,734,119 3 Cost of project management VND 1,844,532,565 4 Cost of investment in construction VND 11,581,945,454 5 Other costs VND 16,101,145,566 6 Cost of environmental protection activities VND 455,024,266 7 Cost of compensation for site clearance VND 1,064,703,600 (estimated) 8 Contingency cost VND 18,036,898,962 TOTAL VND 160,690,000,000

Source: Presentation of investment project

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

CHAPTER III: POLICY, LEGAL AND ADMINISTRATIVE FRAMEWORK 163. The activities of the subproject should be in line with the policy framework of the World Bank and the Government of Vietnam. Accordingly, at the stage of identifying the subproject, it needs to be screened to identify the scope and requirements for implementing the ESIA. - For the compliance with the requirements of the Government of Vietnam: An Environmental Impact Assessment (EIA) report was prepared and approved by the People's Committee of Lam Dong province in the project preparation stage. - For the compliance with World Bank requirements: An ESIA report conforming to the Environmental and Social Mangement Framework is approved by the World Bank and related policies have been triggered for the project. In addition, dam safety plan, resettlement plans, ethnic minority development plans, integrated disease management plans have been also implemented. 3.1. Applicable national policy, administrative and legal framework A. Environment - Environmental protection law No. 55/2014/QH13 regulating on strategy environment assessment, environmental impact assessment and environmental protection commitment. Environmental report should be prepared simultaneously with establishment of investment projects (feasibility report). - Decree No. 18/2015/ND-CP dated 14 February 2015 on planning of environmental protection, strategy environment assessment, environmental impact assessment and environmental protection plan. - Decree No. 40/2019/ND-CP issued on 13 May 2019 on amendment and supplement of some articles of some decrees of detailed regulations and guidance for implementing Law on Environmental Protection. - Circular No. 27/2015/TT-BTNMT dated 29 May 2015 on strategy environment assessment, environmental impact assessment and environmental protection plan. - Circular No. 24/2017/TT-BTNMT dated 01 September 2017 on environmental monitoring technique. - Circular No.: 26/2015/TT-BTNMT on detailed environmental protection plan and simple environmental protection plan. - Circular No. 16/2009/TT-BTNMT dated 07 October 2009 by Ministry of Environmental and Natural Resource on regulation and national technical standards on environment, quality of air and toxic in ambient environment. - Decision No. 22/2006/QD-BTNMT dated 25 December 2006 by Ministry of Environmental and Natural Resource applying Vietnamese standards on environment. - Direction No. 26/CT-TTg dated 25 August 2014 on implementing environmental protection law. B. Policies on compensation, support and resettlement - Constitution of the Socialist Republic of Vietnam 2013. - Land Law No. 45/2013/QH13 approved by the National Assembly on 29 November 2013, being in effect on 1 July 2014. - Decree No. 35/2015/ND-CP, dated 13 April 2015 of the Government on management and use of rice cultivation land. - Decree No. 43/2014/ND-CP, dated 15 May 2014, detailing a number of articles of the

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Land Law. - Decree No. 44/2014/ND-CP, dated 15 May 2014, on land price regulations. - Decree No. 47/2014/ND-CP, dated 15 May 2014 on regulations on compensation, support and resettlement when the State acquires land. - Decree 38/2013/ND-CP dated 23 April 2013 of the Government on the management and use of official development assistance (ODA) and concessional loans of donors. - Circular No. 37/2014/TT-BTNMT, dated 30 June 2014 detailing compensation, support and resettlement when the State recovers land. - Circular 36/2014/TT-BTNMT dated 30 June 2014 of the Ministry of Natural Resources and Environment detailing methods of valuating land cost; Constructing and adjusting land price list; Specific land valuation and consultancy to determine land prices. - Decision No. 50/2017/QD-UBND dated 29 December 2017 of the People's Committee of Lam Dong province on compensation, support and resettlement when the State acquires land in Lam Dong province. - Decision No. 69/2014/QD-UBND dated 19 December 2014 of the People's Committee of Lam Dong Province, issuing the price list of land types in districts, Bao Loc city and Da Lat City - Lam Dong province. - Decision No. 20/2019/QD-UBND dated 20 March 2019 of the People's Committee of Lam Dong Province, issuing the adjustment coefficient of land prices in 2019 in Di Linh district, Lam Dong province. - Decision No. 19/2019/QD-UBND dated 20 March 2019 of the People's Committee of Lam Dong Province, issuing the adjustment coefficient of land prices in 2019 in Lam Ha district, Lam Dong province. - Decision No. 18/2019/QD-UBND dated 20 March 2019 of the People's Committee of Lam Dong Province, issuing the adjustment coefficient of land prices in 2019 in Don Duong district, Lam Dong province. - Decision No. 12/2019/QD-UBND dated 20 March 2019 of the People's Committee of Lam Dong Province, issuing the adjustment coefficient of land prices in 2019 in Cat Tien district, Lam Dong province. - Decision No. 21/2019/QD-UBND dated 20 March 2019 of the People's Committee of Lam Dong Province, promulgating the adjustment coefficient of land prices in 2019 in Bao Lam district, Lam Dong province. - Decision No. 03/2019/QD-UBND dated 13 March 2019 of the People's Committee of Lam Dong Province, on issuance of the unit price of new construction of villas, houses and the general unit price of construction components for determining the value of assets making construction works in Lam Dong province. - Decision No. 10/2014/QD-UBND dated April 1, 2014 of the People's Committee of Lam Dong province on adjusting and supplementing the compensation unit price list for some crops when the State acquires land in Lam Dong province. The Decision was associated with the Decision No. 03/2013/QD-UBND dated January 18, 2013 of the People's Committee of Lam Dong Province - Decision No. 03/2013/QD-UBND dated January 18, 2013 of the People's Committee of Lam Dong Province on the issuance of the compensation unit price list for damaged plants in Lam Dong province when the State acquires land.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province C. Construction - Construction law No. 50/2014/QH13 dated 18 August 2014 by National Assembly of the Socialist Republic of Vietnam. - Decree No. 46/2015/ND-CP dated 12 May 2015 on management and maintenance of construction works. - Decree No. 37/2015/ND-CP dated 22 April 2015 on construction contract. - Decree No. 59/2015/ND-CP dated 18 June 2015 on management and investment of construction projects. - Decree No. 32/2015/ND-CP dated 25 March 2015 on management of investment cost. - Circular No. 02/2018/TT-BXD dated 06 February 2018 of the Ministry of Construction providing for environmental protection in construction and reporting thereof. D. Water resources, forest protection, culture and heritage, biodiversity - Law No. 17/2012/QH13 on Water Resources approved on 21 June 2012 by the national Assembly. - Law on Cultural Heritage No. 28/2001/QH10 issued by National Assembly of the Socialist Republic of Vietnam dated 29 June 2001. - Law No. 32/2009/QH12 dated 18 June 2009 by the National Assembly on revision and supplementation of some articles of Cultural Heritage law which is taken effect from 01 January 2010. - Law No. 20/2008/QH12 on Biodiversity issued by National Assembly of the Socialist Republic of Vietnam on 13 November 2008. Chapter III - Conservation and Sustainable Development of Natural Ecosystems and Chapter IV - Conservation and Sustainable Development of Species. - Law No. 16/2017/QH14 on Forestry approved by National Assembly of the Socialist Republic of Vietnam on 15 November 2017. - Law No. 84/2015/QH13 on Occupational Safety and Hygiene approved on 25 June 2015 by the National Asembly. - Law No. 33/2013/QH13 on Natural Disaster Prevention and Control approved on 19 June 2013 by the National Assembly. - Law No. 40/2013/QH13 amending Law on Fire Prevention and Fighting approved on 22 November 2013 by the National Assembly. - Law No. 10/2012/QH13 on Labor Code approved on 13 Novermber 2012 by the National Assembly. - Law No. 23/2008/QH12 on Road Traffic approved on 13 November 2008 by the National Assembly. - Law No. 02/2011/QH13 on Complaints approved on 11 November 2011 by the National Assembly. - Decree No. 43/2015/ND-CP dated 06 May 2015 by the Government on management of water resource protection corridor. - Decree No. 201/2013/ND-CP dated 27 November 2013 by the Government on regulating on details of executing some water resource laws. - Decree No. 23/2006/ND-CP dated 03 March 2006 by the Government on Law on protection and development of forest.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province - Decision No. 57/QD-TTg dated 09 January 2012 by Prime Minister of the Government of Vietnam on protection and development of forest to 2011-2020. E. Regulations on dam safety - Decree No. 114/2018/ND-CP dated 04 September 2018 on dam and reservoir safety management. - Ordinance on Dykes No. 26/2000/PL-UBTVBH10 dated 24 August 2000; - Ordinance on Exploitation and Protection of Irrigation Works No. 32/2001/PL- UBTVQH10 dated 4 April 2001. - Decree No. 112/2008/ND-CP, dated 20 October 2008 of the Government on the management, protection, and general exploitation of water resources and the environment of hydropower and irrigation reservoirs. - Decree No. 143/2003/ND-CP, dated November 28, 2003 of the Government on detailed regulations of implementing a number of articles of the ordinance on exploitation and protection of irrigation works. - Circular No. 40/2010/TT-BNN dated 27 May 2011 defining the capacity of organizations and individuals involved in management and exploitation of irrigation works. - Circular No. 65/2009/TT-BNN, dated 12 October 2009, guiding the organization and decentralization of exploitation of irrigation works. - Circular No. 33/2008/TT-BNN, dated 4 February 2008 guiding the implementation of a number of articles of Decree No. 72/2007/ND-CP. - Decision No. 3562/QD-BNN-TL dated 13 November 2007, temporarily stipulating technical capacity requirements of dam management units. F. Gender policy - Law No. 73/2006/QH11 on gender equality by National Assembly of the Socialist Republic of Vietnam, at the 10th session of the Legislature on 29 November 2006. - Marriage and family law No. 52/2014/QH13 issued by the National Assembly of the Socialist Republic of Vietnam on 19 June 2014. - Decree No.126/2014/ND-CP dated 31 December 2014 regulating in details of some articles and measures of executing marriage and family law. - Decree No. 55/2009/ND-CP on sanction of administrative violation on gender equality. - Decree No. 48/2009/ND-CP on some measures of ensuring gender equality. - Circular No.11/2014/TT-BTP dated 17 April 2014 on ensuring gender equality in legal aid. - Decision No. 2351/QD-TTG dated 24/12/2010 by Prime Minister on approval of National Strategy on gender equality (NSGE) in the period of 2011-2020. G. Ethnic minorities and ethnic minority development policy - Decision No. 1956/2009/QD-TTg dated 17/11/2009 by Prime Minister on approval of overall plan on occupational training for rural labour to 2020. - Resolution No. 30a/2008/NQ-CP by dated 27/12/2008 by the Government on sustainable poverty reduction program for the 61 poorest districts. - Decree No. 60/2008/ND-CP dated 9/5/2008 by the Government on function, tasks and entitlement and structure of the Ethnic Committee. - Decision No. 06/2007/QD-UBDT dated 12/1/2007 by the Ethnic Committee on

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province communication strategy for program 135, phase 2. H. Policies related to the subproject implementation - Decision No. 1858/QD-TTg dated 02/11/2015 by Prime Minister on approval of the list of the project “Dam rehabilitation and safety improvement” (WB8), funded by WB; - Decision No. 4638/QD-NN-HĐQT dated 09/11/2015 by Minister of Ministry of Agriculture and Rural Development on approval of feasibility report of the project “Dam rehabilitation and safety improvement” (WB8), funded by WB; - Decision No. 5492/QD-BNN-HTQT dated 30/12/2015 by Ministry of Agriculture and Rural Development on approval of dam safety framework, Dam rehabilitation and safety improvement” (WB8), funded by World Bank; - Official letter No. 7500/UBND-NN dated 04 December 2015 of Lam Dong province PC on arrangement of implementing the project of repairing and enhancing dam safety (WB8) in Lam Dong province; - Official letter No. 8800/BNN-TCTL dated 19 October 2016 by Ministry of Agriculture and Rural Development on agreement of the list of reservoirs under the subproject of repairing and enhancing dam safety (WB8) in Lam Dong province; - Official letter No. 1541/TCTL-XDCB dated 25 October 2018 by General Department of Irrigation on the completion of dam safety report and feasibility study report of the subproject 2, WB8, Lam Dong province; - Official letter No. 7464/UBND-NN dated 14 November 2018 by Lam Dong province PC on changing the investment of repairing Ma Poh reservoir to investment of repairing Phuc Tho Farm reservoir (Ri Hil lake); - Official letter No. 9971/BNN-TCTL dated 07 December 2018 on agreement of changing the list of reservoirs under the subproject 2 - Repair and enhance dam safety (WB8) in Lam Dong province. K. National standards • Water - QCVN 01:2009/BYT: National technical regulation on quality of drinking water - QCVN 02:2009/BYT: National technical regulation on quality of domestic water - QCVN 08-MT:2015/BTNMT: National technical regulation on quality of surface water - QCVN 09-MT:2015/BTNMT: National technical regulation on quality of underground water - QCVN 14:2008/BTNMT: National technical regulation on quality of domestic wastewater • Quality of air - QCVN 05:2013/BTNMT: National technical regulation on quality of ambient air - QCVN 06:2009/BTNMT: National technical regulation on hazardous substances in ambient air - TCVN 6438:2001: Maximum limit for emissions for road vehicles • Soil environment - QCVN 03-MT:2015/BTNMT: National technical regulation on the allowable limits of heavy metals in the soils

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province - QCVN 43:2012/BTNMT: National technical regulation on sediment quality • Management of solid waste - TCVN 6696:2009: Solid wastes - Sanitary landfill - General requirements for environmental protection - QCVN 07:2009: National technical regulation on hazardous waste thresholds • Vibration and noise - QCVN 27:2010/BTNMT: National technical regulation on vibration - QCVN 24:2016/BYT: National technical regulation on Noise - Permissible Exposure Levels of Noise in the Workplace - QCVN 26: 2010/BTNMT: National technical regulation on noise (replacing TCVN 5948: 1999 Acoustics - Noise emitted by accelerating road vehicle - Permitted maximum noise level) • Health and labor safety: - QCVN 22:2016/BYT: National technical regulation on lighting - permissible levels of lighting in the workplace - QCVN 24:2016/BYT: National technical regulation on noise - permissible levels of lighting in the workplace - QCVN 26:2016/BYT: National technical regulation on microclimate - permissible value of microclimate in the workplace - QCVN 27:2016/BYT: National technical regulation on vibration - permissible levels of vibration in the workplace Compliance with the implementation of social and environmental impact assessment 164. The environmental and social impact assessment of the subproject will be carried out in compliance with the environmental assessment process of World Bank and the Government of Vietnam. In particular, the environmental and social impact assessment of the subproject has to be complied with the environmental and social management framework of the project which has been reviewed and approved by the World Bank. Social and environmental screening will be conducted for each subproject to determine the appropriate size and type of environmental assessment. Based on that, the TOR will be prepared for environmental and social impact assessments in accordance with the scale of the subproject and the expected potential impacts from the subproject implementation. Environmental and social screening will be conducted by safeguard policy specialists of World Bank. The TOR for Environmental and Social Impact Assessment will also be reviewed and approved by the World Bank Safeguard Policy Specialists prior to the implementation of the Environmental and Social Impact Assessment. In the process of environmental and social impact assessment, consultations with affected people and local NGOs should be conducted. The environmental and social impact assessment report will be publicly available at the sub-project site in Vietnamese so that affected people and local NGOs can access it and the English version will be published on the World Bank's website prior to the appraisal of the subproject.

3.2. Safeguard policy of the World Bank 165. The objective of these policies is to prevent and mitigate unexpected adverse impacts on the people and the natural environment during the implementation process. Safeguard policy provides the basis for the participation of the stakeholder in designing the project and acting as an important tool for building ownership among local people. 166. The effective impact and development of the Bank's projects and programs has increased

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province significantly as a result of attention to these policies. World Bank’s safeguards policies are available on the website at http://web.worldbank.org. http://web.worldbank.org/ 3.2.1. Project level 167. Social and environmental screening of the project is implemented in compliance with OP4.1 (Environmental Assessment), OP 4.04 (Natural Habitats), Physical cultural resources (OP 4.11), Indigenous peoples (OP/BP 4.10), involuntary resettlement (OP/BP 4.12), Safety of Dams (OP 4.37), Prọjects on international waterways (OP/BP 7.50), and Pest Management (OP 4.09) which will be applied for this project. According to social and environmental screening result, the project is classified as Category A. In addition, the project also needs to be complied with requirements of the WB on public consultation and information disclosure. 3.2.2. Sub-project level 168. It is only upgraded reservoirs on the existing bed and it has been conducted social and environmental screening and determined that the subproject does not cause much effect on environment and society in the subproject area. The subproject is classified as level B on environmental and social impact. The related policies of WB triggered for the subproject include: Environmental policies OP/BP 4.01 Environmental Assessment - OP 4.09 Pest Management - OP/BP 4.37 Safety of Dams Social policies - OP/BP 4.10 Indigenous people - OP/BP 4.12 involuntary resettlement OP/BP 4.01 Environmental assessment 169. This policy is considered throughout the process of identifying, preventing and mitigating the potential negative environmental and social impacts associated with the Bank's lending activities. In activities of the World Bank, the purpose of environmental assessment is to improve decision making and ensure that project options are being reviewed and sustainable and that the community, which is likely to be affected, must be consulted. The borrower is responsible for performing the environmental assessment (EA) and the Bank will advise the borrower at the request of the Bank. Borrowing projects are proposed in four categories, it is depended on the location, sensitivity, scale of the project, and the nature and extent of potential environmental impacts, including projects A, B, C and F,I. 170. This sub-project triggers OP 4.01 as it relates to the construction and operation of reservoirs which would cause potential negative social and environmental impact. Basing on the environmental screening results, the subproject is classified B in terms of environment. As specified in OP 4.01 and the Environmental Assessment of the Government of Viet Nam, the subproject prepared ESIA in compliance with the Environmental and Social Management Framework that meets government regulations and requirements of safeguard policy. Upon review and approval, the ESIA report of this subproject will be publicly posted to the locality in the project area to ensure that affected people and local NGOs can access it and through the World Bank website. OP 4.09 Pest management 171. The purpose of pest management policy is to minimize and manage the environmental and health risks associated with the use of pesticides, promote and support safe, effective and friendly pest management with environment. The purchase of pesticides in a World Bank-financed project must be assessed the nature and extent of the related risks, taking into account the proposed and intended use. To manage pest affecting one of the two sectors of agriculture or public health, the

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province WB supports a strategy to promote the use of biological control methods and reduce dependence on pesticides as well as chemistry. In World Bank financed projects, the borrower will deal with pest management issues in line with the environmental assessment context of the project. In the process of appraisal of a project related to pest management, the Bank will evaluate the borrower's capacity, legal and institutional framework to promote and support a secure pest management program in efficient and environmentally friendly manner. The subproject has no related activities for the use of pesticides however this policy is triggered for the subproject with consideration of the increase in activity and intensity of agricultural activities in the subproject in the beneficiary area which is a consequence of improving the operational capacity of the sub-projected reservoirs and use of some chemicals to kill termites. OP/BP 4.37 Safety of Dams 172. This policy is triggered for the whole project because of the safe operation of the dams is related to socio-economic development and the environment. The proposed dam safeguard policy is based on the opinion of experienced and responsible experts in the design and construction supervision of the borrower through the dam safety measures and implemented throughout the project cycle. This policy is also applied to the rehabilitation and improvement of existing dams, which affect the performance of a project. In this case, a dam safety assessment should be undertaken and additional dam safety measures should be proposed. OP 4.37 recommends that, in appropriate circumstances, WB staff will discuss with the customers the necessary measures to strengthen the institutional, legal and regulatory framework for dam safety programs. This policy is triggered for the subproject because the proposed activities of the sub-project are related to the rehabilitation and upgrading of existing reservoirs. OP/BP 4.12 Involuntary resettlement 173. Voluntary Resettlement Policy is to address long-term difficulty and poverty and environmental impacts on affected people during the resettlement process. OP 4.12 is applied regardless of whether the affected person is relocated or not. The World Bank describes all processes and results of "involuntary resettlement", or simply resettlement, even when APs are not required to relocate. Resettlement is considered as involuntary when the Government has the right to acquire land or other assets, and when the affected people have no choice to maintain their livelihood. 174. This policy is applied because this subproject causes the effects of permanent involuntary or temporary involuntary land acquisition and the loss of land-related structures and assets to construct the subproject. After appraisal, the subproject is prepared and disseminated the Resettlement Policy Framework and Resettlement Plan. The Resettlement Policy Framework and Resettlement Plan include measures to ensure that displaced persons (i) are informed of resettlement options; (ii) consulted and selected alternative resettlement options; and (iii) compensated and restored livelihood. OP 4.10 Indigenous peoples 175. The policy of defining ethnic minorities can be defined in particular geographical areas by the presence of varying degrees of the following characteristics: - Ties as closely as members of the different indigenous cultural group and are recognized for this feature by others. - Lives in concentration in an environment which is different from geography or territory inherited by the ancestors in the project area and to be close to the nature of the habitat and territory. - Culture, economy, society or political institutions are different from those of the majority of cultures and societies. - Ethnic minority language differs from the official language of the region or country.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 176. The required condition for approving the investment project: OP 4.10 requires the borrower to undertake consultations and disclosures with ethnic minorities that may be affected and establish a broad community support model for the subproject and its objectives. The project financed by the Bank shall include calculations to (a) avoid potential negative impacts on ethnic minority communities; or (b) when avoiding is not feasible, measures should be proposed to minimize, mitigate, or compensate for impacts. 177. This policy is applied because there are 26 ethnic minority households directly affected by the land acquisition activities of the sub-project. World Bank Group’s EHS Guidelines 178. Environment, Health and Safety (EHS) of the World Bank Group (WBG)/International Finance Corporation (IFC) was launched in 2008 which is an important guideline on the protection of environment, health and safety in industrial development and other projects. This guideline sets out the goals that need to be achieved and what measures need to be taken to bring the best results at a reasonable cost. This guideline can be found at the website http://www.ifc.org. The World Bank policy on access to information 179. In addition to the environmental safeguard policies, to promote transparency and accountability, the World Bank also issues a policy of access to information relating to proposed safeguards measures. The WB sets out this policy to support borrower in decision-making by allowing borrowers access to information on the social and environmental aspects of the project at the website with the native language which is easy to understand and intuitive. The WB ensures that the relevant environmental and social safeguard documents related to the project as well as the preparation procedures related to the subprojects are introduced in a timely manner prior to the appraisal. Information access policy requires disclosure of information in both English and Vietnamese languages and meets World Bank standards. Table 16. A summary of the WB and Vietnam Government’s environmental assessment process The stages in Vietnam the WB (Regulated in Decree No. environmental (OP/BP 4.01 on Environmental 18/2015/ND-CP, Circular assessment Assessment) 27/2015/TT-BTNMT) process Screening List (A, B, C, FI) Items of I, II, III and IV of Decree It is not mandatory for each specific 18/2015/ND-CP. case to classify and apply safeguard Regulations in items of I, II and III- policy, and determine environmental List of projects requiring SEA and assessment tool (EA). EIA, support for submission and The World Bank will classify a approval. proposed project into one of four All projects are not listed. categories including A, B, C, or FI Frequently, the project owner self depending on the type, location, examines the project based on the sensitivity, and scale of the project and classification as stated in Decree the nature of the project and the 18/2015/ND-CP and consults the importance of potential environmental Department of Natural Resources impacts. and Environment (DONRE) or the Type A: Requirement for full Vietnam Environment Environmental Impact Assessment. In Administration (VEA) to categorize some cases, the Environmental and suitably and requirements on EA Social Management framework is also report of the project such as: required. • Project included in Annexes Type B: ESIA, Environmental and of I, II, III: SEA or EIA is Social Management framework or necessary

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province The stages in Vietnam the WB (Regulated in Decree No. environmental (OP/BP 4.01 on Environmental 18/2015/ND-CP, Circular assessment Assessment) 27/2015/TT-BTNMT) process Environmental and Social Management • The project in Annex IV: Plan is mandatory. In most cases, it is does not require EIA and EPP. required, Environmental and Social • Projects not included in Management framework or Annexes I, II, III and IV: Environmental and Social Management Requirement on EPP Plan. Type C: no action of EA. List FI: The Environmental and Social Management Framework is the most commonly used tool. In the case of a number of sub-projects that have been identified before the appraisal, the FI will prepare specific tools based on frameworks, such as ESIA or the ESMP. Environmental Depending on the impact of the project, a The types of EA tools such as SEA, assessment tool range of tools are used to meet the World EIA or EPP are defined in Annexes I, Bank's requirements, including: social II, III and IV of Decree 18/2015 / and environmental management ND-CP. framework; specific environmental assessment; social and environmental management plan; Regional and sectorial EA; Risk or hazard assessment; Environmental audit. The World Bank provides general guidelines for implementing each tool. Scope of The World Bank helps the borrower draft TOR for EA are not required. environmental the TOR for EA and determines the EA Normally, after consultation with the assessment scope, procedures, timeline and outline of local DONRE or the Environmental the EA report. Department about the type of EA, the For Category A projects, ESIA TORs project owner will prepare an EA will be required, and the determination of report. scope and consultancy will be prepared to prepare TORs for environmental assessment reports. Public During the EA process, the borrower - Project owners have a consultation must consult with affected groups and responsibility to consult with the local NGOs on the environmental aspects Committee of the people's of the project and focus on their views. communes, wards and towns For Class A projects, the Borrower shall (hereafter referred to collectively consult these groups at least twice: (a) as commune) where the project is immediately after the environmental implemented, with the inspection and before the EA TOR is community or organization completed; And (b) once a draft EA directly affected by the project; report has been prepared. In addition, the Study and receive comments and

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province The stages in Vietnam the WB (Regulated in Decree No. environmental (OP/BP 4.01 on Environmental 18/2015/ND-CP, Circular assessment Assessment) 27/2015/TT-BTNMT) process publicly disclosed to the project affected preparing, approving and publicizing groups and local NGOs in order for them his EMP at the local Commune to be easily accessible. When the World People's Committee office. Make sure Bank officially receives the report, the everyone is informed, inspected, World Bank will publish the report in monitored. (Article 16 of Decree English to the public via posting on the 18/2015/ND-CP). Bank's website. Independent For Class A projects, the borrower retains Not specified in the policy of environmental independent EA experts who have no Vietnam. monitoring contact with the project to implement The project owner must either specialist EA. implement or hire a consultancy unit For projects of Class A which are at high- which meets the conditions set out in risk or multi-dimensional environmental Clause 1, Article 13 of Decree No. concerns, the borrower will also hire a 18/2015 to prepare EIA reports. The consultative group of independent project owner or unit providing environmental experts with international consulting service must meet the qualification to consult on aspects of the following requirements: (i) the officer EA-related project. responsible for EIA must have at least Specialist/consultancy firm will be a Bachelor's degree and certification selected through a bidding process under of EIA; (ii) Has the officers with a strict monitoring by the World Bank. project related qualification with university level or more; (iii) Has the laboratory, standard test equipment being confirmed to be eligible to perform measurement, sampling, processing and analysis of environmental samples to serve the environmental impact assessment of the project; in case of not having the laboratory, it must hire a contract with capacity unit to provide standard equipment for measurement. Review / The World Bank will review the findings The Ministry of Natural Resources Approval and recommendations of EA to determine and Environment shall appraise and Process of EA if they provide sufficient basis for the approve EIA report of projects project's handling of the Bank or not. specified in Annex III of this Decree, When the borrower has completed or excluding projects with defense and completed a part of the environmental security contents. assessment work before the Bank Ministries and ministerial-level participates in a project, the Bank will agencies shall appraise and approve consider the environmental assessment to EIA reports on projects falling under ensure its consistency with this policy. their competence for investment The Bank may, where appropriate, approval, except for projects included request additional environmental in Annex III of this Decree; assessments, including public Provincial People's Committees shall consultation and disclosure. appraise and approve EIA report of projects in the province, except for

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province The stages in Vietnam the WB (Regulated in Decree No. environmental (OP/BP 4.01 on Environmental 18/2015/ND-CP, Circular assessment Assessment) 27/2015/TT-BTNMT) process the projects mentioned above. The appraisal will take place no later than 45 working days at MONRE level and 30 working days at DONRE level and 5 working days at district level upon receipt of full Environmental Impact Assessment or EPP. The number Number of copies not specified. The project owner must submit at and language of Language requirements: English and least seven Environmental Impact the EA / EIA Vietnamese. EA reports in Vietnamese Assessment reports (depending on the needed to be are required for domestic disclosure and number of members of the appraisal evaluated must be in English for publication on the council) and a feasibility study or World Bank website. technical report of the proposed project. Contents of EA For Category A projects, the contents of The content of the EA report should reports the EA report is in accordance with be consistent with Circular Annex B of OP4.01. 27/2015/TT-BTNMT. The scope of EA for a B-type project may vary by project, but the EA scope is narrower than the A-type project. The Social-Environmental Management Plan is an integral part of EA of Category A ( regardless of other tools used). EA for Category B projects may also be an Environmental and Social Management Plan (EMP) with the content set out in Annex C of OP 4.01. Monitoring of During the implementation of the project, Local DONREs are assigned to EA the World Bank supervises the monitor the environmental implementation of environmental aspects compliance of the project. on the basis of environmental regulations When completing the construction and the project borrower prepares the stage of the project, the reports in accordance with the loan Environmental Management Agencies agreement and it is described in other will coordinate with the Construction project documents to determine whether Management Agencies to monitor the compliance of the borrower's compliance with the environmental Environmental Procedures (mainly EMP) management activities in the EA. is satisfactory or not. If the compliance is not satisfactory, the World Bank will need to discuss with the borrower to ensure the compliance.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

CHAPTER IV: NATURAL, SOCIAL AND ECONOMIC FEATURES OF THE SUBPROJECT AREA

4.1. Natural environment 4.1.1. Geographic location 180. Lam Dong is a mountainous province in the south of Tay Nguyen with an average height of 800 - 1.000 m above sea level, the natural area of 9,772.19 km2; the terrain is relatively complex, mainly mountains, high mountains, flat valleys that have created various natural characteristics of climate, soil, flora and fauna, etc. as well as interesting landscapes of Lam Dong.

- Bordering with Khanh Hoa and Ninh Thuan in the east; - Bordering with Dong Nai in the south-west; - Bordering with Binh Thuan in the southeast - south; - Bordering Dak Lak in the north; 181. Lam Dong is located on three plateaus and the watershed area of 7 major river system. It is located in the southern key economic region - a dynamic area with high economic growth and a potential market. The whole province can be divided into three areas with 5 strengths for development: perennial industrial trees, forestry, minerals, tourism - services and animal farming. Figure 32. Geographic location of Lam Dong province

182. The outstanding characteristic of Lam Dong is complex highland terrain, mainly including high mountains, small flat valleys that create various factors of climate, flora and fauna, etc. and interesting landscapes of Lam Dong. 183. The outstanding feature of the topography of Lam Dong province is quite clear hierarchy Environmental and Social Impact Assessment (ESIA) 73

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province from north to south. . - The north of the province is a high mountain region, the Lang Bian highland with peaks from 1,300m to more than 2,000m such as Bi Dup (2,287m) and Lang Bian (2,167m). - The east and west have low mountainous terrain (height of 500 - 1,000m). - The south is the transition zone between Di Linh - Bao Loc plateau and semi-plateau. 184. The subproject “Repair and upgrade dam safety (WB8) in Lam Dong province” is located in 5 districts including Don Duong, Di Linh, Lam Ha, Bao Lam and Cat Tien. 185. Don Duong district: is a mountainous district of Lam Dong province, located in the southeast of Da Lat, south of Lam Vien plateau, with an altitude of over 1,000m. With a natural land area of over 80,000 hectares, of which agricultural land is nearly 17,000 hectares, forestry land is 38,000 hectares. There are 10 commune and town units with a population of over 91,000, of which ethnic minorities account for nearly 30%. Don Duong’s terrain can be divided into three main types: - High mountainous terrain includes a mass of mountains running in the northeast - southwest direction with the common terrain of 1,000 - 1,500m, the slope is over 150, most of the area is still covered by pine forests. Don Duong district has high peaks: Yang Kuet (1,431m) in the northeast of Don Duong; Kanan (1,485m) in the east of Da Nhim Lake; Ya Bonnonh (1,650m) on the boundary between Don Duong district and Ninh Thuan province; Srela (1,486m) in the north of Thanh My town; Parglo (1,395.5m) in Pro commune. - The gently wavy hill form with alternating low mountains is the transition between high mountainous terrains with valley terrain, the common slope is 3-150, distributed in the south of Da Nhim River. Some areas are basalt soil (Ka Do, Chau Son). - Topographic form of mountainous valley, river, slope of 0-150. This type of alluvial soil, steep slope, distributed along the Da Nhim River, is the main agricultural production area of the district. 186. Di Linh district: is a district in Lam Dong province, located on Di Linh plateau, at an altitude of 1,000 m above sea level. Being fertile basalt soil, the natural land area is 161,464 ha; of which, there are 47,000 hectares of agricultural land. Di Linh has a sub-region of weather and climate that is suitable for industrial crops, especially coffee. Di Linh district has many different terrain types, but mainly there are two types of topography. - Mountainous plateau terrain: The area is relatively flat, distributed in NH20s, suitable for planting industrial trees. - High mountainous terrain: Distributed in the south and southwest of the district. Currently, there is still natural forest covering. This region is mainly developing forestry with the function of protection and environmental protection. 187. Lam Ha district: is a district in the Northwest of Lam Dong province. It borders with Da Lat city and Lac Duong district in the North, Di Linh district in the South, Duc Trong district in the East, Dam Rong district and Dak Nong province in the West. The natural area is 60,000 ha, accounting for about 10% of Lam Dong province. Lam Ha is located on Di Linh plateau and a part of Lang Biang plateau, with an average altitude about 900m above sea level. The terrain is relatively complex, divided by many rivers and streams, there are 3 main terrain types: high mountains, low hills and valleys. Lam Ha has the main types of soil which are alluvial soil, sloping land, of which basalt red soil is suitable for growing crops such as tea, coffee and mulberry. 188. Bao Lam district: is a district of Di Linh - Bao Loc plateau, between Bao Loc city and Di Linh district, the North borders Dak Nong province, the South borders Binh Thuan province, the East borders Di Linh district. The province is bordered by Bao Loc city and the districts of Cat

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Tien, Da Teh and Da Huoai in the west. In this position, Bao Lam has favorable conditions to access areas of and out of the province. The topography of Bao Lam district is relatively flat. The average height of 900m above sea level. Although there are not many high mountains (Tiou Hoan 1,444m, BNom Quanh 1,131m, BNom RLa 1,271m), this place is the origin of many large streams and the source of La Nga River. The main streams and rivers such as Da Tong Kriong, Da Dung Krian, Da Riam, Da Binh, gather many small streams to pour into La Nga River. In the north of Bao Lam district, there are also many big streams such as: Da Pou, Da Siat, Da Koi and Da Sou with many small streams focusing on Da Dang River which is the natural boundary of the district with Dak Nong province. 189. Cat Tien district: is a district in the southwest of Lam Dong province. The East is adjacent to Da Teh district and Bao Lam district, the West borders Bu Dang district - Binh Phuoc province, the South borders Tan Phu district - Dong Nai province, the North borders Bu Dang district - Binh Phuoc province and DakLap district - DakNong province. Cat Tien is located in the upstream of the Dong Nai River. Da Dang River (also called Da Duong) is a natural boundary in the North, West and South of the district. The basic topography of Cat Tien is the low mountain topography that transitions from the southern highlands to the plains. The average height is 400m. There are both hillocks and wetlands. 4.1.2. General geological features Geology of Suoi Dia reservoir 190. Stratigraphy of the survey area is divided according to the geological engineering units of the top-down order as follows: - Embankment layer - Asia clay - mixed with macadam, grit: This is the product of embankment of the dam. Distributed over the entire survey area. The thickness of the layer changes gradually from the top of the dam to the dam base. Ingredients: Asian clay being reddish brown, dark brown, dark gray mixed with macadam, grit. The state of hard plasticity - half hard. - Layer 1 - Asia clay containing grit - plastic flexibility: fairly widely distributed throughout the survey area. Layer thickness varies from 1.2m at HK3 to 3.4m HK2. Composition: Asian clay being dark gray, black, dark brown containing grit. Hard plastic state. - Layer 2 - Asia clay containing macadam, grit - hardened clay: Distributed over the entire survey area. Unknown layer thickness. Ingredients: Asian clay being dark brown, red brown, dark gray contains shavings, strongly weathered grit. The state of hard plasticity - half hard. Geology of Cay Xoai reservoir 191. Stratigraphy and physical properties of the dam site area are as follows: - Embankment layer - Asian clay mixed with macadam, grit - hard plastic - semi hard: This is the product of embankment of the dam. Mainly distributed along dam body. The thickness of the layer changes gradually from the top of the dam to the dam base. Ingredients: Asian clay being reddish brown, dark brown, dark gray mixed with macadam, grit. The state of hard plasticity - half hard. - Layer 1 - Asia clay containing grit - plastic flexibility: fairly widely distributed throughout the survey area. Layer thickness varies from 1.5m at HK11 to 3.3m HK17. Composition: Asian clay dark gray, black, dark brown containing grit. Hard plastic state. - Layer 2 - Asia clay containing macadam, grit - hardened clay: Distributed over the entire survey area. Layer thickness varies with elevation of the terrain. Ingredients: Asian clay being dark brown, red brown, dark gray contains shavings, strongly

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province weathered grit. The state of hard plasticity - half hard. - Class IA - Weathered rock: Appeared mostly in surveyed drilled holes. Unknown layer thickness. Composition: Intense weathering of rocks to form of clay being dark gray, yellow. Half hard - hard state. Geology of R’lom reservoir

192. Stratigraphy and physical properties of the dam site area are as follows: - Earth layer - Asia clay contains particles, grit, being plastic hard - semi hard: This is the product of embankment. From HK3 - 3.7m thickness to HK1 - 12.1m thickness. Ingredients: Asia clay being yellow, blue gray, dark gray mixed with macadam, soft weathered gravel in some places with macadam, hard grit. State of plastic - hard, medium compact structure. The embankment layers have an uneven state, each layer has a thickness of 0.2m. - DN 1 layer - Clay containing sand, grit, gravel - state of hard plastic - semi-hard: Distributed quite widely on the entire survey area. Layer thickness at HK2 position is 2.5m. At the locations of HK1 and HK3, the thickness of the layer is unknown. Composition: Clay being dark yellow, green gray, dark brown, dark gray containing grit, gravel, coarse grained sand with quite high percentage. State of hard plastic - semi-hard, moderately compact structure. - DN 2 layer - Asia clay - clay has a homogeneous composition - plasticity - semi- hard: Appearing at the position HK2 - 5.3m thickness. Composition: Asian clay - clay being dark yellow, green gray. The soil has a fairly homogeneous composition. State of hard plastic - semi-hard, moderately compact structure. Geology of Da Sa 193. Stratigraphy and physical properties of the dam site area are as follows: - Layer 1: (layer DD) Asian clay being reddish brown, dark yellow, dark brown mixed with crushed, softly weathered grit. State of soft plastic - semi-hard, moderately compact structure. - Layer 2 (layer adQ): Asia clay being dark yellow, dark gray, black, containing fine- grained sand. The state of soft plastic - hard plastic, moderate compact structure. - Layer 3 (layer eQ): Asia clay being dark yellow, red brown, dark brown containing macadam and grit. State of semi-hard - hard, moderately compact structure. Geology of Phuc Tho Farm reservoir 194. Based on the results of the field survey drilling and laboratory samples, the strata of the survey area are divided according to the geological units of the top-down order as follows: - DD layer: clay - hard plastic - semi hard: Distributed over the entire survey area of the dam. This is the embankment product of the dam site. Layer thickness varies according to the elevation of the ground. From the position at the drilled hole HK1 - 1.3m thickness to the hole HK2 - 10.5m thickness. Ingredients: Asia clay being reddish-brown, dark yellow, dark brown mixed with shavings, hard weathered gravel, and sometimes hard grit. The state of hard plasticity - semi-hard. The embankment layers have an uneven state, each soil layer has a thickness of 0.2 m. - AQ layer: Asia clay contains plant remnants - soft plastic: Distributed in the form of lens circuits in the old stream bed area of the valley section. From the hole HK5 - 1.4m thickness to the hole HK3 - 2.5m thickness. Composition: Clay being dark brown, dark gray, black containing plant remnants. Soft plastic state. Origin of alluvium (aQ).

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province - Layer 1: Asian clay containing laterite - bauxite grit - semi-hard - hard: Distributed at the positions of the two shoulders of the dam. Layer thickness varies with elevation of the terrain. From the hole HK4 - 2.5m thickness to the hole HK1 - 3.7m thickness. Composition: Clay being dark yellow clay, dark brown, red brown containing laterite - bauxite grit. Half-hard state. - Layer 2: Asia clay containing particles, weathered grit - semi-hard - hard: Distributed over the entire survey area stretching from the shoulders of the dam. Unknown layer thickness. Ingredients: Asia clay being reddish brown, red purple, opaque white spots containing shavings, weathered grit. State of semi-hard - hard. Geology of Thanh Bach reservoir 195. Based on survey drilling results at 04 locations of drilled holes HK1, HK2, HK3, and HK4 in the field and laboratory samples, strata of the survey area are divided according to the geological units with the top - bottom order as follows: - Earth layer: Clay - hard plastic - semi hard: Distributed over the entire survey area of the dam. This is the embankment product of the dam site. Layer thickness varies with elevation of the ground. - From the location of drilled hole HK1 - thickness of 3.0m to the location of drilled hole HK2 - thickness of 6.1m. Ingredients: Asia clay being reddish-brown, dark yellow, dark brown mixed with shavings, soft and friable weathered gravel, sometimes hard grit. The state of hard plasticity - semi-hard. The embankment layers have an uneven state, each soil layer has a thickness of 0.2 m. - Layer 1: Asia clay containing particles, weathered gravel - soft plastic - hard plastic: Occur in the entire survey area. Unknown layer thickness. Composition: Asia clay being gray blue, dark gray, black containing shavings, pebbles, weathered rocks. The ingredient is relatively heterogeneous. State of soft plastic - hard plastic. Geology of Reservoir No.4 196. Based on the survey drilling results at 04 locations of HK1, HK2, HK3 and HK4 boreholes in the field and laboratory samples, the stratigraphy of the survey area is divided by geological units with the top-bottom order as follows: - Earth layer: clay layer containing macadam, grit - hard plastic - semi-hard: Distributed over the entire survey area of the dam. This is the embankment product of the dam site. Layer thickness varies with elevation of the terrain. From hole HK3 - 4.0m thickness to hole HK1 - 10.4m thickness. Ingredients: Asia clay being reddish brown mixed with macadam, grit. The state of hard plastic - half hard. The earthworks have an uneven state, each layer has a thickness of 20 - 25cm. - Layer 1: Asia clay containing fine-grained sand - soft plastic - hard plastic: Distributed over the entire survey area. Unknown layer thickness. Composition: Asia clay being dark gray, black, blue gray and containing fine-grained sand. State of plastic - hard plastic. Geology of Loc Thang reservoir 197. Based on the survey drilling results at 5 locations of drilled holes HK1, HK2, HK3, HK4, and HK5 in the field and laboratory samples, the strata of the survey area are divided according to the geological construction unit as the top-to-bottom order as follows: - Earth layer: clay containing laterite - bauxite grit - hard plastic - semi-hard: Distributed over the entire survey area of the dam. This is the embankment product of the dam site. Layer thickness varies with elevation of the terrain. From the HK5 hole location - 3.2 m thickness to the drilled hole HK1 - 7.0 m thickness. Composition: Asia clay being reddish brown, dark yellow, dark brown, dark gray mixed laterite grit

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province - bauxite. State of hard plastic - semi-hard. The earthworks have an uneven state, each layer has a thickness of 20 - 25 cm. - Layer 1: Asia clay - hard plastic - semi-hard: Distributed over the entire survey area. Unknown layer thickness. Composition: Asian clay being dark gray, black, dark brown. The soil has a fairly homogeneous composition. State of soft plastic - hard plastic. Geology of Da Bo B reservoir 198. Based on the survey drilling results at 05 locations of HK1, HK2, HK3, HK4 and HK5 drilled holes in the field and laboratory samples, the strata of the survey area are divided according to the geological construction units as the top-to-bottom order as follows: - Earth layer: clay - hard plastic - semi-hard: Distributed over the entire survey area of the dam. This is the embankment product of the dam site. Layer thickness varies with elevation of the terrain. From hole HK4 - 1.0 m thickness to hole HK5 - 3.6 m thickness. Ingredients: Asian clay being yellow, red brown, dark brown mixed with macadam, soft friable weathered gravel, sometimes hard gravel. State of hard plastic - half hard. The embankment layers have an uneven state, each layer has a thickness of 0.2m. - Layer 1: Asia clay with fine-grained sand - soft and plastic: Appears on the whole survey area. Very uneven distribution. At the location of the hole HK3 - 0.5m thick to the position of the hole HK1 - 4.8m thick. Composition: Dark gray, black, dark brown clay with fine-grained sand. The ingredient is rather heterogeneous. Soft plastic state. - Layer 2: Asia clay containing macadam, weathered grit - hard plastic - semi-hard: Distributed over the entire survey area. Unknown layer thickness. Ingredients: Asian clay being dark yellow, light yellow, reddish brown containing crushed, weathered grit. State of hard plastic - semi-hard. 4.1.3. Meteorology, hydrology and rivers 199. Data from hydro-meteorological stations that has been updated up to 2015 is used to calculate hydrological conditions for the subproject. 200. In the Dong Nai river basin, up to the location of the Tri An hydroelectric project, there are about 9 to 10 rain measurement stations, of which about 6 meteorological stations monitor rain, evaporation, temperature, humidity, wind and some other factors. 201. The upstream of the basin has the meteorological stations of Da Lat, Lien Khuong and the rain measurement station of Dran. The Da Lat station monitored rain in 1910, 1911, 1918, 1919, 1921 - 1944, 1954 - 1970, at the Maria monastery with an elevation of 1500m. In 1960, Da Lat University Institute observed a number of factors such as rain, evaporation, temperature and humidity. In 1976, the Da Lat meteorological station was set up to observe quite a full range of factors such as evaporation rain, temperature, humidity, wind, atmospheric pressure, etc. The Lien Khuong meteorological station has operated since 1949. Monitoring factors are rain, evaporation, temperature, humidity, radiation, wind and some other factors. The Dran rain measurement station has operated since 1949, but most documents have been lost. These stations have only synchronized documents from about 1976 up to now. 202. The middle and downstream parts of the basin have the meteorological stations of Bao Loc, and Dak Nong, the rain measuring stations of Di Linh and Ta Lai. At Bao Loc, the rainfall observation started in 1933 at various places such as Bao Loc, Blao, Minh Rong, Tan Rai, Dam Rong, Da Lao, etc. and ended in 1974. The Bao Loc meteorological station started monitoring in 1962 factors such as rain, evaporation, temperature, humidity, wind, until now (except for 1975 when the monitoring was interrupted by the war). The Dak Nong meteorological station, located in the downstream of Dong Nai 4 hydropower structure, has begun to monitor factors such as rain, evaporation, temperature, humidity, wind and a number of other factors from 1978 to the present.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province The Di Linh rain measuring station has operated since 1929 at some points around the town such as Lang Hanh, Thac Can and Di Linh. The document of rain at Di Linh station is long but there are many interruptions for many reasons. In addition, there is a rain gauging station located at the Ta Lai hydrological station, which began to monitor rain from 1979 to now. The Ham Thuan weather station operated from 1989 to 2000, the Tri An meteorological station operated from 1987 to 1993. 203. According to the meteorological data observed at the Lam Dong meteorological station, the basic characteristics of meteorology in the region are listed as follows. 4.1.3.1. Air temperature 204. The characteristics of average monthly temperature, the highest and lowest temperature during the monitoring period of some stations in the basin are shown in the following table. Table 17. Average monthly, annual, highest and lowest temperatures Da Lat Lien Khuong Bao Loc Month Average Max Min Average Max Min Average Max Min Jan 15.8 28.5 4.5 19.4 31.4 7.9 19.5 19.3 14.7 Feb 16.7 29.2 6.5 20.4 32.8 10 20.7 21.7 15.5 Mar 17.9 29.8 6.2 21.6 32.8 10.2 21.8 23.6 17.2 Apr 18.9 29.1 9.5 22.7 33.3 11.8 22.7 26.4 18.3 May 19.4 27.9 11.3 22.8 32.8 13.7 22.9 26.2 18.2 Jun 19.1 26.7 13.6 22.2 31.2 15.9 22.3 26.8 18.4 Jul 18.7 26.4 13.2 21.8 36.8 16.1 22 25.7 17.9 Aug 18.5 26.7 13.3 21.7 31.3 15.4 21.8 25.5 18 Sep 18.5 26.4 12.6 21.5 32.5 16.2 21.8 25.4 17.9 Oct 18 25.7 8.7 21.1 30.6 11.8 21.6 23.5 17.3 Nov 17.3 25.9 7 20.6 31.l 9.7 20.8 22.4 16.3 Dec 16.1 26.2 5.6 19.6 30.6 7.9 19.9 19.9 14.7 Yearly Average 17.9 21.3 21.5 Max 29.8 36.8 26.8 Min 4.5 7.9 14.7 1 15.8 28.5 4.5 19.4 31.4 7.9 19.5 19.3 14.7 2 16.7 29.2 6.5 20.4 32.8 10 20.7 21.7 15.5

Source: Lam Dong Statistical Yearbook, 2017. 205. Temperature fluctuated month by month, the average temperature increased gradually from January to May, then decreased from June to December. At the Dalat station, the annual average temperature was 17.90C; the highest temperature was 29.80C (in March) and the lowest temperature was 4.50C (in January). At Lien Khuong and Bao Loc stations, the average annual temperatures were approximately the same, which were 21.30C and 21.50C, respectively.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

4.1.3.2. Humidity 206. Humidity is one of the micro-climate factors affecting social life as well as the adaptation and development of ecosystems including animals and plants. Due to geographical and topographical features, the humidity of air in different areas in Lam Dong province is also different. The relative humidity of the air in the rainy months is quite high (84-91%). Months including June, July, August and September have the highest humidity (over 90%). In the dry months, the humidity was 69-83% in Da Lat, 73-80% in Lien Khuong and 83-92% in Bao Loc. Table 18. Relative humidity (%) Da Lat Lien Khuong Bao Loc Month Average Min Average Min Average Min Jan 81.6 19.0 74.0 26.0 80.0 75.0 Feb 77.9 12.0 71.1 21.0 78.0 73.0 Mar 79.5 13.0 71.3 14.0 78.0 70.0 Apr 83.7 20.0 75.7 14.0 83.0 79.0 May 87.6 14.0 82.1 29.0 87.0 84.0 Jun 88.9 47.0 85.5 41.0 90.0 85.0 Jul 90.3 43.0 86.3 35.0 90.0 88.0 Aug 90.9 15.0 87.1 36.0 91.0 88.0 Sep 90.6 48.0 87.1 40.0 90.0 88.0 Oct 88.8 40.0 86.9 36.0 89.0 84.0 Nov 85.5 28.0 82.4 37.0 86.0 81.0 Dec 83.4 24.0 77.3 25.0 84.0 79.0 Yearly Average 85.73 80.57 85.5 Min 12.0 14.0 70.0 Source: Lam Dong Statistical Yearbook, 2017. 4.1.3.3. Number of sunny hours 207. Average number of sunny hours varies according to the month in a year that was recorded as follows. Table 19. Monthly, yearly average number of sunny hours in the project area Lien Khuong station Bao Loc station Month Nbq Nbqmax Nbqmin Nbq Nbqmax Nbqmin Jan 257 310 24.3 257.3 309.5 24.3 Feb 246 281 207 246.1 281.1 206.9 Mar 263 308 208 262.8 307.6 207.9 Apr 228 279 160 227.7 278.6 160 May 197 255 169 197.3 254.8 168.8 Jun 156 214 97.1 155.5 213.8 97.1

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Lien Khuong station Bao Loc station Month Nbq Nbqmax Nbqmin Nbq Nbqmax Nbqmin Jul 171 226 120 170.5 225.5 120.3 Aug 144 232 70.9 144.2 232 70.9 Sep 152 182 86.3 152.2 181.9 86.3 Oct 165 229 106 165.1 229.4 105.9 Nov 181 257 111 180.9 256.6 110.8 Dec 228 291 144 228.1 291.3 143.5 Yearly 198.98 255.18 125.23 198.98 255.18 125.23 Source: Lam Dong Statistical Yearbook, 2017. 208. Number of sunny hours in the dry season (from December to May) was higher than that in the rain season, there were over 200 sunny hours/month, in which March was the month having the highest number of sunny hours (263 sunny hours/month). The period with relatively little sunshine was the rain season (from June to November), the number of sunny hours was under 200 hours/month and August was the month with the least number of sunny hours, 144 hours. 4.1.3.4. Wind 209. In a year, there are two types of wind: • Summer wind: Operating from May to October, the prevailing wind direction is the West. • Winter wind: Operating from November to April, the prevailing wind direction is the East. Table 20. Average wind speed and the annual prevailing wind direction Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual average Vbq(m/s) 10 14 15 16 17 20 17 17 14 15 14 12 15.08 Prevailing N,NE NE NW SW W NW SW W SW W N,NW N,NE NW direction Note: N - North, E - East, S - South, W - West Source: Hydrological report of the project 4.1.3.5. Rainfall a. Average annual rainfall 210. Annual rainfall is unevenly distributed according to space and time and ranges between 1,600 - 2,700mm. The southwestern wind side (Da Huoai, Bao Loc, Tay Di Linh) has heavy annual rainfall, reaching 3,200 - 3,500mm. 211. In the East - Northeast, the rainfall gradually reduces to only about 600 - 1,700mm. Especially in the valleys between high mountains, the rainfall is below 1,400mm. . 212. In the dry season (from November to March), due to the influence of the northeast monsoon, Lam Dong has very little rainfall, accounting for only 10-15% of the annual rainfall. There were 2-3 years in which there were months with no rain or not significant rainfall. 213. The rain season happens at the same time with the Southwest monsoon, the rainfall in this season accounts for 85-90% of the annual rainfall, with heavy rain and continuous rain lasting for a long time, leading to floods in some areas, damaging crops. 214. The least rainy month is January or February, this month’s average rainfall is about 10- 20mm in the place with little rain, 40-50mm in a rainy place - The rest of the dry season has the

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province average monthly rainfall from 60-80mm. 215. During the rain season, every month has rains with above 150mm and higher in the peak period of the rain season. In the South - Southwest, the rainfall has only one peak in July and August, other places have only one main peak in September, the monthly average rainfall in these months are 250-300mm in places with little rain and 300-400mm in the heavy rain places. The auxiliary peak occurs in the beginning of the rain season (May) with a rainfall of above 200mm. 216. November rainfall in all places is smaller than October with the rainfall of 140-180mm. This shows that the transition from the rain season to the dry season in Lam Dong takes place quite suddenly. As a mountainous province with sloping terrain, the water holding capacity of the soil is poor, so some areas immediately becomes shortage of water when just beginning the dry season. 217. The fluctuation of rainfall is clearly shown through the beginning and the end of the rain season. 218. There was the year having rain in the beginning of April but there were another year having rain until the second week of May. 219. It is quite similar for the ending of the rain season. There was the year having a long rain season with late ending (the end of November) but there was the year having rain ended from the second week of October. 220. Beside of abnormal cases, the rain season in Lam Dong generally becomes stable from the third week of April (the West - West south area) and May (the East north area), and commonly ends in the third week of October (Da Lat, Lien Khuong) and the second week of November (Bao Loc, Don Duong). Table 21. Average monthly rainfall at stations in the subproject area (mm) Month Da Lat Lien Khuong Di Linh Bao Loc Da Teh I 5.30 4.40 14.10 56.20 13.66 II 15.40 18.40 19.60 52.80 8.99 III 63.90 50.20 42.50 115.50 43.89 IV 161.70 124.30 125.70 196.20 122.67 V 199.00 222.30 179.20 254.20 270.37 VI 200.00 178.30 221.10 300.80 408.32 VII 216.50 192.40 225.10 383.60 472.75 VIII 242.00 190.70 279.30 480.70 521.81 IX 280.20 278.90 276.60 388.20 435.83 X 244.20 233.20 227.20 339.40 264.16 XI 88.80 83.80 80.60 167.20 157.91 XII 28.90 28.20 31.90 79.60 54.15 Annual 145.49 133.76 143.58 234.53 231.21 average XngMax 375.00 185.00 423.00 254.00 Year 1952 1952 1952 1952 Source: Hydrological report of the project 4.1.3.6. Hydrology 221. Lam Dong is a province in the Dong Nai river system, has a plentiful water source, a dense stream network, great hydroelectric potential, with 73 reservoirs and 92 spillways. Rivers and streams in Lam Dong province are fairly evenly distributed, with an average density of 0.6 km / km2 with a bottom slope of less than 1%. Most rivers and streams flow from northeast to southwest. Due to the mountainous terrain and fragmentation, most of the rivers and streams here have relatively small basins and have many waterfalls in the upstream. The major rivers of the province belong to the Dong Nai river system. The three main rivers in Lam Dong are: Da Dang

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province River (Da Dong), La Nga River, Da Nhim River. 222. Due to the natural characteristics of the basin: high mountainous terrain, steep terrain slope, being strongly divided, heavy rainfall being unevenly distributed throughout a year, so the flow between months also varies significantly. Stream flows mainly happen in the rain season and become small flows in the dry season. 223. Calculation results of design annual flow and flow in reservoirs are presented in the following table.

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Table 22. Summary of calculation results for design annual flows in reservoirs Unit: Q: m3/s; W: 103 m3 Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year 1.1 Suoi Dia reservoir - 85% Q 0.2048 0.1524 0.1374 0.1739 0.2445 0.3914 0.6061 0.3544 1.0922 0.7914 0.5252 0.2897 4.96 W 548.56 368.70 368.03 450.77 654.90 1,014.55 1,623.45 949.27 2,831.11 2,119.78 1,361.38 775.97 13,066.46 1.2 Cay Xoai reservoir - 85% Q 0.0221 0.0164 0.0148 0.0188 0.0264 0.0422 0.0654 0.0382 0.1178 0.0853 0.0566 0.0312 0.54 W 59.19 39.67 39.64 48.73 70.71 109.38 175.16 102.31 305.33 228.46 146.71 83.56 1,408.87 2. Da Sa reservoir - 85% Q 0.042 0.036 0.033 0.052 0.082 0.109 0.101 0.141 0.255 0.318 0.179 0.058 1.406 W 112.05 87.88 87.26 134.86 220.96 283.70 271.81 377.90 660.03 850.58 465.03 154.42 3,706.5 3. R’lom reservoir - 85% Q 0.041 0.040 0.032 0.049 0.055 0.096 0.141 0.080 0.271 0.189 0.125 0.065 1.185 W 110.9 97.2 86.6 127.7 148.0 249.0 377.6 215.0 701.7 505.7 323.1 173.2 3,115.7 4. Da Bo B reservoir - 75% Q 0.137 0.079 0.062 0.102 0.190 0.348 0.702 0.992 1.267 1.660 0.587 0.248 6.403 W 367.01 190.53 165.13 264.19 508.28 979.61 1,879.81 2,655.74 3,283.84 4,446.44 1,521.37 664.82 16,926.8 5. Thanh Bach reservoir - 85% Q 0.177 0.101 0.079 0.131 0.245 0.488 0.850 1.201 1.534 2.011 0.758 0.321 7.896 W 474.27 246.22 213.39 341.4 656.83 1,265.91 2,276.75 3,216.53 3,977.27 5,385.36 1,966.01 859.12 20,879.1 6. Loc Thang reservoir - 85% Q 0.037 0.022 0.017 0.028 0.051 0.098 0.194 0.416 0.316 0.253 0.150 0.068 1.650

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Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year W 99.24 52.49 46.16 72.06 135.34 253.67 520.25 1,114.41 818.32 678.18 387.56 182 4,359.7 7. Reservoir No.4 - 85% Q 0.015 0.011 0.009 0.020 0.027 0.055 0.073 0.103 0.133 0.168 0.083 0.035 0.732 W 43.90 23.22 20.42 31.88 59.87 112.21 230.14 492.98 362.0 300.01 171.44 80.51 1.928.6 8. Phuc Tho Farm reservoir - 85% Q 0.010 0.010 0.008 0.012 0.014 0.024 0.034 0.020 0.066 0.046 0.010 0.010 0.008 W 27.8 23.6 20.9 32.1 37.3 61.9 91.9 52.3 170.7 123 27.8 23.6 20.9 Source: Presentation of the project investment report Table 23. Summary of calculation results for flood flow according to design frequency Unit: p:%; Q: m/s; W: 103 m3

No. Structure Ptk Qptk Wtk Tl Tx Pkt Qptk Wkt Tl Tx Ppmf Qpmf Wpmf Tl Tx 1a Suoi Dia reservoir 1.5 90.97 1993.75 8.12 4.06 0.50 99.52 2130.54 7.93 3.96 0.10 110.53 2318.75 11.65 3.88 1b Cay Xoai reservoir 1.5 21.19 229.05 4.01 2.00 0.50 22.69 244.76 3.99 2.00 0.10 24.80 266.38 3.98 1.99 2 Da Sa reservoir 1.5 48.81 720.00 0.00 0.00 0.50 74.71 867.00 0.00 0.00 0.10 114.75 1089.00 0.00 0.00 3 R’lom reservoir 1.5 117.12 674.03 1.08 2.16 0.50 133.47 753.73 1.05 2.09 0.10 157.69 854.62 1.00 2.01 4 Da Bo B reservoir 2 210.98 2054.31 1.80 3.61 1.00 242.60 2282.25 1.74 3.48 0.10 353.00 3030.02 1.59 3.18 5 Thanh Bach reservoir 1.5 276.70 3195.20 2.14 4.28 0.50 327.39 3524.10 1.99 3.99 0.10 423.26 4002.90 1.75 3.50

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6 Loc Thang reservoir 1.5 120.62 1395.07 2.57 3.86 0.50 152.07 1636.24 2.39 3.59 0.01 280.64 2467.87 1.95 2.94 7 Reservoir No.4 1.5 64.72 476.25 1.64 2.45 0.50 74.71 523.84 1.56 2.34 0.10 89.41 591.58 1.47 2.21 8 Phuc Tho 1.5 15.34 84.17 1.02 2.03 0.5 17.95 93.61 0.97 1.93 0.10 28.61 131.16 0.85 2.55 Farm reservoir Source: Presentation of the project investment report

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4.1.3.7. Extreme weather phenomena in 5 districts of the subproject (Source: Hydro meteorological Center of Lam Dong) 224. 5 districts of Don Duong, Di Linh, Bao Lam, Lam Ha and Cat Tien are located in the Central Highlands weather area of Vietnam, so the characteristics of extreme weather events in 5 districts are similar to the whole of Lam Dong province and the Central Highlands area. Details are as follows: - Lam Dong often has erratic climatic phenomena affecting production, animal and plant resources. Fog, hoarfrost, thunderstorm, hail, etc. have caused extreme weather and climate phenomena with an increase of level, scale of influence and occurring frequency. Annual average temperature increases by 0.0120C/year in Da Lat and 0.020C/year in Bao Loc; the whole province in the past 25 years has increased by 0.3 - 0.50C. - Manifestation of climate change in Lam Dong is the longer dry season and shorter rain season, rains intensively happen in the rain season, the intensity of rain increases. Other impacts are such as water evaporation, flood, drought, landslides. The agricultural sector was the most severely affected: in 2017, floods damaged 182ha of aquaculture in Cat Tien and Bao Loc; in 2010, draught damaged 267ha of rice, 200ha of crops in Da Lat; in 2017,Da Lat had more than 120ha of vegetables and flowers infected. As a consequence, the tourism industry in Da Lat was seriously affected. Climate change also hurts many sensitive ecosystems; change the process of growth and reproduction of many plants and animals; threaten the existence and development of many small and precious plan populations; change habitats, food sources of many wild animal and plant species. 4.1.4. Quality status of physical environmental components 4.1.4.1. Selection of location, parameters, frequency of measuring and sampling 225. When implementing the EIA report for the project, the EIA consultant conducted measurement, sampling and analysis of environmental quality of air, surface water, groundwater and soil at the subproject area in December 2018. The locations of the sampling points are distributed along the dam site and in some locations at the beginning of the transport route for general assessment of the environment in the project area. In addition, location is also a factor taken into account when taking samples, in order to provide evaluation results of the background environment of these locations before the implementation of the subproject, contributing to the monitoring of environmental quality changes before and after the subproject implementation. The measurement results will be compared and evaluated with the corresponding current environmental technical regulations. 226. Sampling schedule was from 04 to 07 December 2018. The table below shows locations of sampling and environmental quality measurement in the project area. Table 24. Sampling locations for analyzing quality of environmental components in the subproject area Coordinates Types of No. Code Location (VN 2000 sample coordinate system) I Phuc Tho Farm reservoir 1 Surface NM1 Downstream of the reservoir, at the dam body, X: 1305096 water of Tan Son village Y: 544123 NM2 Upstream of the reservoir, Phuc Tan village X: 1304551 Y: 544241 2 Groundwater NN1 At the well of HH Pham Van Binh - at a X: 1305204

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Coordinates Types of No. Code Location (VN 2000 sample coordinate system) distance of 200m from the reservoir - Phuc Tho Y: 544231 commune NN2 At the well of HH Cao Van Vinh - 400m from X: 1304475 the reservoir - Phuc Tho commune Y: 544165 3 Air KK1 Downstream of the reservoir - Phuc Tho X: 1305177 commune Y: 544204 KK2 Upstream of the reservoir - Phuc Tho commune X: 1304487 Y: 544177 4 Soil MD1 Downstream of the reservoir, at the dam body, X: 1305404 Tan Son village Y: 544431 II Da Sa reservoir 1 Surface NM3 Downstream of the reservoir, at the dam body, X: 1295421 water Da Sa village Y: 541728 NM4 Upstream of the reservoir, Lien Ho village X: 1296085 Y: 542032 2 Groundwater NN3 At the well of HH Nguyen Van Thang - Da Sa X: 1295329 village, Lien Ha commune, 50m from the Y: 541636 reservoir NN4 At the well of HH Nguyen Huu Tien - Lien Ho X: 1295294 village, Lien Ha commune, 150m from the Y: 541601 reservoir 3 Air KK3 Downstream of the reservoir - Lien Ha X: 1295328 commune Y: 541630 KK4 Upstream of the reservoir - Lien Ha commune X: 1295370 Y: 541677 4 Soil MD2 At the dam body of the reservoir downstream - X: 1295124 Da Sa village, Lien Ha commune Y: 541432 III Suoi Dia - Cay Xoai inter-reservoir 1 Surface NM5 Upstream, the watershed of Suoi Dia reservoir X: 1298422 water Y: 573714 NM6 Downstream of the reservoir X: 1298638 Y: 573950 2 Groundwater NN5 At the well of HH Nguyen Van Phan - Cau Sat X: 1298508 village - Tu Tra commune - 50m from Suoi Dia Y: 573800 reservoir NN6 At the well of HH Nguyen Van Son - Cau Sat X: 1298591 village - Tu Tra commune - 100m from Cay Y: 573903 Xoai reservoir

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Coordinates Types of No. Code Location (VN 2000 sample coordinate system) 3 Air KK5 At the dam body od Suoi Dia reservoir - Tu Tra X: 1298459 commune Y: 573751 KK6 At the dam body of Cay Xoai reservoir - Tu Tra X: 1298558 commune Y: 573870 4 Soil MD3 Upstream of Cay Xoai reservoir - Tu Tra X: 1298516 commune Y: 573808 IV R’lom reservoir 1 Surface NM7 Downstream of the reservoir, at the dam body X: 1298638 water Y: 573950 NM8 Upstream of the reservoir X: 1298638 Y: 573950 2 Groundwater NN7 At the well of HH Yakrong - Klot village, Tu X: 1290263 Tra commune Y: 579467 NN8 At the well of HH K’la - Klot village, Tu Tra X: 1290896 commune Y: 580324 3 Air KK7 Downstream of the reservoir X: 1290589 Y: 579793 KK8 Upstream of the reservoir X: 1290520 Y: 579948 4 Soil MD4 At the dam body - downstream of the reservoir X: 1290547 Y: 579751 V Thanh Bach reservoir 1 Surface NM9 At the intake culvert in the reservoir X: 1284725 water downstream Y: 542036 NM10 In the reservoir upstream (near the semi-flooded X: 1283908 area) Y: 542284 2 Groundwater NN9 At the well of HH Nguyen Van Chan - Tan Phu X: 1284265 1 village, Dinh Lac commune, 100m from the Y: 541576 reservoir NN10 At the well of HH Trieu Tien Du - Dong Lac 3 X: 1284424 village, 100m from the reservoir Y: 542800 3 Air KK9 At the dam body - downstream of the reservoir X: 1284516 Y: 542127 KK10 Upstream of the reservoir X: 1283845 Y: 542221 4 Soil MD5 Downstream of the reservoir, near the intake X: 1284909 culvert area

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Coordinates Types of No. Code Location (VN 2000 sample coordinate system) Y: 542220 VI Reservoir No.4 1 Surface NM11 At the intake culvert, downstream of the X: 1279309 water reservoir Y: 522395 NM12 Upstream of the reservoir X: 1279290 Y: 522950 2 Groundwater NN11 At the well of HH Dang Thai Son - Dong Trang X: 1279381 village, Dinh Trang Hoa commune, 100m from Y: 522467 the reservoir NN12 At the well of HH K’rao - Dong Trang village, X: 1279604 Dinh Trang Hoa commune, 10m from the Y: 523264 reservoir 3 Air KK11 At the dam body - downstream of the reservoir X: 1279222 Y: 522308 KK12 Upstream of the reservoir X: 1279196 Y: 522856 4 Soil MD6 Right near the intake culvert area - downstream X: 1279368 of the reservoir Y: 522454 VII Loc Thang reservoir 1 Surface NM13 At the intake culvert, downstream of the X: 1283843 water reservoir Y: 508765 NM14 Upstream of the reservoir X: 1286255 Y: 707293 2 Groundwater NN13 At the well of HH Nguyen Trong Khanh - X:1283579 Group 3 - Loc Thang town, 150m from the Y: 508501 reservoir NN14 At the well of a HH living next to the reservoir - X: 1286437 Loc Thang town, 50m from the reservoir Y: 707475 3 Air KK13 At the dam body - downstream of the reservoir X: 1283870 Y: 508792 KK14 Upstream of the reservoir X: 1286313 Y: 707351 4 Soil MD7 Near the intake culvert area - downstream of the X: 1283547 reservoir Y: 508469 VIII Da Bo B reservoir 1 Surface NM15 Right near the intake culvert area - downstream X: 1288349 water of the reservoir Y: 458867

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Coordinates Types of No. Code Location (VN 2000 sample coordinate system) NM16 Upstream of the reservoir X: 1288927 Y: 458457 2 Groundwater NN15 At the well of HH Dieu K’it - Brun village, Gia X: 1288356 Vien commune, 150m from the reservoir Y: 458874 NN16 At the well of HH Nguyen Thi Tien - Brun X: 1288986 village, Gia Vien commune, 150m from the Y: 458516 reservoir 3 Air KK15 At the dam body - downstream of the reservoir X: 1288425 Y: 458943 KK16 Upstream of the reservoir X: 1288709 Y: 458239 4 Soil MD8 Right near the intake culvert area - downstream X: 1288260 of the reservoir Y: 458778 a. Quality of surface water ❖ Reference standard 106. QCVN 08-MT: 2015/BTNMT - National technical regulation on surface water quality. ❖ Assessment 227. The results of measurement and analysis of surface water quality in the project area are summarized in Table 25 (see Annexes for details). 228. The analysis results reveal that parameters of surface water in the reservoir were lower than thresholds as per QCVN 08-MT: 2015/BTNMT, column B1. This means that surface water in the reservoir was not polluted.

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Table 25. Analysis results of surface water quality in the project area

Result

Code + - - pH DO TDS BOD5 COD TSS N- NH4 N-NO3 N-NO2 Coliform Hg As Cd Pb Fe of sample - mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l MNP/100ml mg/l mg/l mg/l mg/l mg/l NM1 6.2 6.4 22.4 5 12 31.5 0.087 5.126 ND 2200 ND ND ND ND 0.597 NM2 6.6 6.6 18.7 4 21 32.4 0.026 4.867 ND 1800 ND ND ND ND 0.942 NM3 6.9 6.8 21.3 2 17 41.5 0.018 4.291 ND 2100 ND ND ND ND 0.086 NM4 6.4 6.6 20.6 7 23 36.8 0.092 3.572 ND 2400 ND ND ND ND 0.124 NM5 6.4 6.3 19.7 3 11 42.7 0.046 4.238 ND 1900 ND ND ND ND 0.082 NM6 6.7 5.9 20.6 5 16 32.8 0.053 3.267 ND 2100 ND ND ND ND 0.136 NM7 6.6 6.2 21.5 6 12 33.4 0.074 4.153 ND 2200 ND ND ND ND 0.416 NM8 6.5 6.5 22.4 2 8 32.1 0.018 4.296 ND 1700 ND ND ND ND 0.513 NM9 6.6 6.0 20.7 6 10 35.7 0.137 2.816 ND 1800 ND ND ND ND 0.097 NM10 6.8 6.2 22.6 5 18 36.9 0.084 3.754 ND 2100 ND ND ND ND 0.135 NM11 6.6 6.4 21.8 7 16 41.5 0.215 5.162 ND 2100 ND ND ND ND 0.294 NM12 6.9 6.6 22.3 2 9 43.0 0.092 3.705 ND 2400 ND ND ND ND 0.467 NM13 6.7 5.7 21.9 3 9 36.9 0.071 4.672 ND 2100 ND ND ND ND 0.358 NM14 6.4 6.0 24.6 5 14 35.7 0.053 3.891 ND 2800 ND ND ND ND 0.162 NM15 6.5 6.2 25.1 8 17 32.8 0.126 4.709 ND 2300 ND ND ND ND 0.514 NM16 7.0 6.7 23.7 4 12 34.5 0.094 5.218 ND 1900 ND ND ND ND 0.087 QCVN08-MT:2015/BTNMT Column 5.5 - 9 ≥ 4 - 15 30 50 0.9 10 0.05 7500 0.001 0.05 0.01 0.05 1.5 B1 Note: ND - Not detected Source: Khai Thinh Environment Technology Trading Service Co., Ltd.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province b. Quality of groundwater ❖ Reference standard 229. QCVN 09-MT: 2015/BTNMT - National technical regulation on ground water quality. ❖ Assessment 230. The results of measurement and analysis of ground water quality in the project area are summarized in Table 26 (see Annexes for details). 231. The analysis results reveal that parameters of surface water in the reservoir were lower than + thresholds as per QCVN 09-MT:2015/BTNMT (except for concentration of NH4 at 2 locations NN1 and NN6 that exceeded thresholds; but the excess was not remarkable. No heavy metals and microbiological factor (coliforms, E.Coli) were not detected for all analyzed samples.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Table 26. Analysis results of groundwater quality in the project area

Analysis result Code of sample pH N-NH4+ N-NO3- N-NO2- Hg As Fe Cd Pb Coliform Ecoli - mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l MNP/100 ml MNP/100 ml

NN1 7.8 1.248 0.084 ND ND ND 0.578 ND ND ND ND NN2 7.6 0.256 ND ND ND ND 0.413 ND ND ND ND NN3 7.2 0.478 0.146 ND ND ND 0.824 ND ND ND ND NN4 7.5 0.165 0.071 ND ND ND 0.651 ND ND ND ND NN5 7.1 0.672 0.068 ND ND ND 0.076 ND ND ND ND NN6 6.8 1.084 0.218 ND ND ND 0.142 ND ND ND ND NN7 7.4 0.097 0.413 ND ND ND 0.158 ND ND ND ND NN8 7.9 0.172 0.251 ND ND ND 0.271 ND ND ND ND NN9 7.4 0.218 0.054 ND ND ND 0.134 ND ND ND ND NN10 7.6 0.075 0.178 ND ND ND 0.056 ND ND ND ND NN11 7.4 0.169 0.094 ND ND ND 0.078 ND ND ND ND NN12 6.7 0.237 ND ND ND ND 0.219 ND ND ND ND NN13 7.7 0.247 0.186 ND ND ND 0.082 ND ND ND ND NN14 7.4 0.067 0.087 ND ND ND 0.157 ND ND ND ND NN15 7.5 0.184 0.091 ND ND ND 0.218 ND ND ND ND NN16 7.2 0.126 0.143 ND ND ND 0.146 ND ND ND ND QCVN09- MT:2015/BTNMT 5.5 - 8.5 1 15 1 0.001 0.05 5 0.005 0.01 3 KPH

Note: ND - Not detected Source: Khai Thinh Environment Technology Trading Service Co., Ltd

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

c. Ambient air ❖ Reference standard 232. QCVN 05:2013 /BTNMT - National technical regulation on ambient air quality. 233. QCVN 26:2010/BTNMT - National technical regulation on noise. ❖ Assessment 234. The results of measurement and analysis of air quality around the project area are summarized in the following table (see the appendix of the report for details). 235. The analysis results show that the air quality in the project area was good, the air parameters at the survey time were within the allowed limits. Noise at surveyed positions were under thresholds.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Table 27. Analysis results of air quality in the project area

Analysis results

Code of sample Temp. Humid. Wind speed NO2 SO2 CO Dust in PM10 PM 2.5 Noise total

0C % m/s mg/m3 mg/m3 mg/m3 mg/m3 mg/m3 mg/m3 dBA KK1 28.6 76 2.7 0.072 0.041 0.138 0.081 0.024 ND 57 KK2 28.1 77 3.6 0.019 0.056 0.241 0.056 0.017 ND 58 KK3 27.4 75 3.1 0.025 0.092 0.359 0.042 0.022 ND 61 KK4 27.9 78 2.9 0.038 0.017 0.128 0.038 0.018 ND 59 KK5 27.6 76 2.8 0.053 0.064 0.153 0.087 0.016 ND 57 KK6 27.4 78 2.5 0.046 0.028 0.182 0.064 0.024 ND 56 KK7 28.5 77 3.1 0.037 0.056 0.246 0.092 0.037 0.018 54 KK8 27.1 76 2.7 0.092 0.041 0.194 0.071 0.041 0.009 62 KK9 28.4 78 3.2 0.061 0.035 0.218 0.076 0.018 ND 61 KK10 27.8 77 2.6 0.072 0.041 0.197 0.092 0.036 ND 58 KK11 27.5 76 2.7 0.035 0.027 0.354 0.134 0.041 0.021 60 KK12 27.6 77 3.0 0.029 0.058 0.261 0.067 0.027 ND 54 KK13 27.5 74 2.8 0.048 0.021 0.186 0.092 0.014 ND 62 KK14 28.1 76 3.1 0.067 0.036 0.214 0.126 0.037 0.011 58 KK15 26.7 77 2.6 0.024 0.024 0.167 0.087 0.027 ND 52 KK16 27.4 76 2.7 0.092 0.052 0.318 0.054 0.016 ND 61 QCVN05:2013/BTMT 0.2 0.35 30 0.3 0.15 0.05 QCVN26:2010/BTMT 70 Note: Temp. - Temperature, Humid. - Humidity, ND - Not detected Source: Khai Thinh Environment Technology Trading Service Co., Ltd

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province d. Soil ❖ Reference standard 236. QCVN 03-MT: 2015/BTNMT - national technical regulation on the allowable limits of heavy metals in the soils. ❖ Assessment 237. The results of measurement and analysis of soil quality in the project area are summarized in the following table (see the appendix of the report for details). 238. The analysis results show that the heavy metals were within the allowable limits, especially Cd and As were not detected. This means that the land in the project area was not contaminated with heavy metals. Table 28. Analysis results of soil quality in the project area

Analysis results QCVN 03- No. Para. Unit MT:2015/BTNMT MD1 MD2 MD3 MD4 MD5 MD6 MD7 MD8 (agricultural land) 1 Zn mg/kg 8.129 6.513 2.918 1.654 3.876 4.652 5.837 4.218 200 2 Cu mg/kg 2.854 3.972 1.864 6.714 9.512 1.382 4.291 5.617 100 3 Pb mg/kg 0.127 0.318 0.096 0.254 0.412 0.082 0.516 0.073 70 4 Cd mg/kg ND ND ND ND ND ND ND ND 1.5 5 As mg/kg ND ND ND ND ND ND ND ND 15 Source: Khai Thinh Environment Technology Trading Service Co., Ltd. 4.1.5. Status of biological resources 239. The sub-project is not located in conservation areas such as watershed protection forests, national parks or biosphere reserves or nature reserves, etc. Therefore, ecological characteristics and biodiversity are assessed locally in terms of project area and vicinity based on the results of current status survey and information provided by local people. 240. Based on the results of current land use and site assessment, the project area has the key ecosystems identified as follows: - Production forest ecosystem: The planted forest ecosystem, distributed in low mountainous hills, is planted and harvested periodically. The main plant species are acacia, eucalyptus, - Agricultural ecosystem: Mainly one-crop rice, vegetable crops and short-term crops such as maize, beans, peanuts, etc. - Residential ecosystem: Including fruit trees such as bananas, longan, mango, lychee ... and other livestock, cattle and domestic pets of the households within the scope of land use of the project. - Aquatic ecosystem of the reservoirs: Aquatic ecosystems of the reservoirs under the subproject 241. According to survey results of environmental consultants and reference documents, there are no rare and endangered flora and fauna in the project area listed in Decree 32/2006 / ND-CP, the Red List of Vietnam or the Red list of IUCN. 4.1.5.1. Flora 242. The plants in the scope of land use of project are less diverse in terms of species; therefore, crops are the dominants meanwhile the wild plants accounts for a small number. Based on survey results of current status of project area conducted by consultants, they can be divided into groups as follows:

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province - Timber trees: Acacia mangium, acacia auriculiformis, magnolia chevalieri, bead tree, cunninghamia lanceolata, bamboo, etc. are planted and harvested periodically on the forest land in project scope. Based on the current land use assessments of the project, it was shown that: - Planted forests are mainly concentrated in the communes’ area. The main plants namely acacia mangium, acacia auriculiformis. The whole area is planted under 1 year. - Fruit trees: bananas, oranges, pomelo, longan, lychee, mango, are mainly concentrated in the garden land, surrounding residential areas and some trees are planted scatteredly in the focal clusters within project area. - Food crops: Rice, maize, sweet potato, peanut, beans…are mainly planted on agricultural land within project area. Particularly, most of the rice in this area is upland rice; cultivated one crop per year and at the time of survey, rice had not been planted. - Vegetables: amaranth, garlic, onion, garlic, cabbage, cauliflower, sweet potato, morning glory, etc. concentrated mainly on the land along Ban Vai stream and a small part in the gardens of the households. 4.1.5.2. Fauna 243. The fauna in the studied area is poor in species. There is no record on rare and endangered species that need to be strictly protected. No specie is included in Red Book. - Domestic animals: They are domesticated and close to people’s life such as cattle, poultries, pigs, chickens, ducts, buffaloes, cows, goats, fish… - Common wildlife species found in the project area according to information from local people, including reptiles, amphibians (snakes, frogs, toads, etc.) Insects (hard-winged groups, membranes, scaly wings, jellyfish, earthworms, crickets, etc.), birds (sparrows, wagtail, Chinese laughing-thrush etc.), however, only a small number of them appear and not so often. - In general, the aquatic animals of the project area are mainly fish species raised in ponds with low density and production, mainly for the needs of people. 244. Based on the assessment results of biological resources status in the project area dominated by forestry and agricultural ecosystems, the species are not various. Most of them are the crops and domestic animals. No species within the subproject area belong to the protected list and no species with significant habitat value are affected by the project activities. 4.2. Socio-economic conditions of the subproject area a. Main agricultural activities and crop structure of communes under the subproject 245. Phuc Tho commune, Lam Ha district. The total cultivated area of annual crops is 150 hectares, including 68 hectares of food crops for both the Winter-Spring and Summer-Autumn crops. The total food output reaches 400 tons, the remaining is vegetables, vegetables and high-tech flowers. Perennial crops: The area of coffee in the commune is 3,851 ha, a decrease of about 120 ha because people switch to growing mulberry trees and crops, the average yield of coffee reaches 35 quintals/ha, the output is estimated to reach 13,000 tons. Total mulberry tree area: 156 ha, average yield being 30 tons of fresh leaves/ha, estimated yield being 2,800 tons. Total area of mulberry trees is 16 ha, average yield being 40 quintals/ha, estimated yield being 24 tons. Tea area: 160 ha, yield being about 20 tons of fresh leaves/ha, yield being about 3,200 tons of fresh leaves. Other fruit trees cover an area of 70 hectares. The implementation of the subproject could affect the irrigation water for 81 ha of agricultural land in Phuc Tho commune. 246. Lien Ha commune, Lam Ha district: In 2018, the total area of agricultural cultivation is 4,075.45 ha. Of which, industrial crops: coffee - 3,395 ha, mulberry - 194 ha, pepper - 118.8 ha, macadamia - 85.2 ha, tea - 7.2 ha; food/food crops: maize - 167.4 ha, vegetables - 86 ha, beans of all kinds - 18 hectares, rice - 1.05 hectares; flower plants: 2.8 hectares. The implementation of the subproject can affect the irrigation water of 420 ha of agricultural land in Lien Ha commune. 247. Tu Tra commune, Don Duong district: In 2018, the total area of agricultural cultivation is 7058.9

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province ha. Of which, annual crops include rice - 1,051 ha with productivity of 60 quintals/ha, corn - 522 ha, sweet potato - 435 ha with a yield of 180 quintals/ha, vegetables - 4,623.1 ha with productivity of 310 quintals/ha, beans - 28.8 ha with a yield of 18 quintals/ha; industrial crops include coffee - 384 ha, macadamia - 15 ha. The implementation of the subproject can affect the irrigation water for 432ha of agricultural land area in Tu Tra commune. 248. Dinh Lac commune, Di Linh district: In 2018, the total area of agricultural cultivation is 2,614.49 ha. Of which, annual crops include (i) rice: Total area of Winter-Spring rice is 90 ha, a yield of 4.5 ha, total production of 405 tons. Summer-Autumn rice area is 193.39 ha, a yield of 4 - 4.5 tons/ha, total productivity of 850 tons; (ii) maize: 55 ha; (iii) Mulberry: 41.9 ha. Industrial crops include (i) Coffee: Total coffee area is 2,107 ha, productivity is estimated at 2.8 - 3.2 tons/ha; total coffee output is estimated at 6,321 tons; (ii) Macadamia: 27.6 ha; (iii) Pepper: 27.3 ha; (iv) tea: 0.3 ha. Fruit trees include (i) Avocado: 41.8 ha; (ii) Durian: 30.2 ha. The implementation of the subproject can affect the irrigation water for 340 ha of agricultural land in Dinh Lac commune. 249. Dinh Trang Hoa commune, Di Linh district: In 2018, the total agricultural cultivation area is 4,883.2 ha. Of which, rice area: 199 ha, maize: 20 ha, vegetables of all kinds: 23.7ha; coffee area: 4,216 ha; tea area: 108 ha; pepper area: 44.5 ha. The area for growing avocado is 54 ha. Durian area is 170 ha. Mulberry area: 13 ha. Macadamia area: 35 ha. The implementation of the subproject can affect the irrigation water for 150 ha of agricultural land in Dinh Trang Hoa. 250. Loc Thang town, Bao Lam district: In 2018, the total area of agricultural cultivation is 3,478.78 ha. Of which, coffee is 2,999 ha; in which the area for harvesting is 2,716 ha with an average yield of 4 tons/ha. The current tea area in the town is 479.78 ha with the average yield of 12.5 quintals/ha/year. The implementation of the subproject can affect the irrigation water for 450 ha of agricultural land in Loc Thang town. 251. Gia Vien commune, Cat Tien district: In 2018, the total area of agricultural cultivation is 2,513.6 ha. Of which, agriculture: 1,800 ha of rice, other vegetables and crops: 100 ha; acacia and melaleuca plantation area: 120 ha, coffee: 7 ha, rubber: 7 ha, cashew: 479.6 ha. The implementation of the subproject can affect the irrigation water for 87 ha of agricultural land in Gia Vien commune. b. The implementation of IPM in the subproject area 252. Every year, the Agricultural Extension Centers of districts collaborates with the Department of Plant Protection to conduct programs of agricultural extension and provide guidelines of using pesticides correctly for effective usage and sustainable environmental protection. After reviewing some pest management programs in communes, the average pesticide ratio is used as follows: - For rice: Use Tungrice 300EC with a dose of 60 - 80 mL/20 L water for grass seed killing; use BiBim 750 WP (7-12 g) + Kata 2 L (40-50 mL)/20 L water for rice blast disease prevention; use T-Supernew 350SC (6-12 mL)/20 L for blast disease prevention. - For coffee trees (special attention to Dak Ha district): Use some pesticides for psyllids prevention such as Applaud 10WP 500 g/200 L water; for pest control using Nurelle D25/2.5 EC 500 mL/200 L water; for mealybug prevention using Mospilan 3EC 400 mL/200 L water. - Other industrial trees in communes: Use Antracol 70WP, Anvil 5SC for fungus prevention. Since 2013, Lam Dong province (including 7 communes/town under the subproject) has introduced many models of collecting pesticide packaging after use under the direction of the Department of Plant Protection and the Steering Committee of the southern provinces, the Department of Crop Production and Plant Protection has collaborated with the Agriculture Center and PCs of communes/town to develop models for setting up containers of pesticide packaging. Farmers participating in the model were propagandized, trained, and instructed how to collect pesticide packages after use into tanks. Activities to collect pesticide packaging on fields, ditches, ponds and lakes in localities has organized. a. Survey data on socio-economic conditions of subproject communes 253. Survey data on social conditions in June 2019 at 8 reservoirs of 7 communes in 5 districts

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province including Di Linh, Don Duong, Bao Lam, Cat Tien and Lam Ha of Lam Dong province, is presented in the following table.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Table 29. Details of socio-economic conditions of communes in the subproject, 2019 Quantity/Ratio No. Content Dinh Trang Loc Thang Phuc Tho Lien Ha Tu Tra Dinh Lac Gia Vien Hoa town Number of villages/hamlets 13 14 14 11 21 14 11 1 Number of cultural houses 13 14 14 11 21 14 11 Land status (ha) ha ha ha ha ha ha ha Total natural land area 9915.37 5199 7399.71 3357.21 5361.56 8026.86 2889.75 Residential land 200.8 149 100.02 260.97 88.1 119.4 37.34 Paddy land 0 1321.82 90 140.17 0 2570.18 Perennial crop land 6416.7 4020 1337.88 2451.36 4.517.7 5489.15 582.65 2 Annual crop land 350 220 2264.96 161.01 140.6 13.05 989.15 Aqua-cultural land and Land with 32.89 103.74 838.44 special-use water surface Forestry land 3197.8 2199.69 71.71 167.14 1119.79 970.01 Unused land 810 0.58 125.5 20.33 9.17 Population HHs/People HHs/People HHs/People HHs/People HHs/People HHs/People HHs/People 3 Number of households (HHs) 1977 2590 2528 2917 3183 4507 1358 Number of people (people) 8421 9604 14110 12647 15231 18279 5128 Ethnic composition HHs People HHs People HHs People HHs People HHs People HHs People HHs People Group: Kinh 1437 5939 2048 7406 792 5298 2228 9329 1916 6803 3362 13502 1275 4795 Group: K’ho 250 1350 367 1339 738 3976 630 3058 1944 8386 15 45 Group: Ma 996 4223 Group: Churu 991 4809 4 Group: Nung 150 615 28 144 1 4 29 136 56 205 16 65 Group: Tay 130 460 92 484 3 15 11 22 69 269 37 147 Group: Muong 1 2 2 7 1 4 2 24 Group: Hoa 10 57 40 176 2 6 8 45 7 38 8 31 Other ethnic minority groups 15 55 9 46 1 4 28 97 5 Population structure % % % % % % %

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Quantity/Ratio No. Content Dinh Trang Loc Thang Phuc Tho Lien Ha Tu Tra Dinh Lac Gia Vien Hoa town Male 51% 52% 50.1 % 51% 46% 50.3% 49.01% Female 49% 48% 49.9 % 49% 54% 49.7% 50.99% At working age 54% 61.6% 56% 61% 42% 67.3% 75% Economic structure % % % % % % % Agriculture 70% 82% 85% 59% 73.1% 31% 88.87% Trading. services 23% 10% 10% 27% 17.9% 27% 10.73% Officials 2% 8% 5% 2% 7% 0.4% Other sectors: Industry. Construction. 5% 12% 9% 35% Transportation. etc. 6 Income per capita/year (VND 45 39.1 62.5 36 38 40 45 million/ year) Total commune budget revenue in the 6.87 5.76 3.84 3.9 2.141 3.58 3.7 first 6 months of 2018 (VND billion) Total commune budget expenditure for the first 6 months of 2018 (VND 6.56 4.38 3.24 2.0 4.4 3.32 2.2 billion) Education School School School School School School School Nursery school 1 2 2 1 2 3 1 7 Primary school 3 3 3 3 3 4 1 Secondary school 1 1 2 1 2 2 1 High school 0 0 0 0 0 1 1 Number of health stations 1 1 1 1 1 1 1 Number of doctors 1 0 1 1 2 1 1 Number of physicians 5 2 3 1 4 2 8 Number of beds 3 5 10 3 5 5 5 Medical facilities Adequate Adequate Adequate Adequate Adequate Adequate Adequate Dengue, viral Flu, sinusitis Pharyngitis, Flu, sinusitis Upper Flu, sinusitis Respiratory Common disease flu, flu, arthritis respiratory infection,

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9 Market 1 1 1 1 1 1 1 Sensitive areas Item Item Item Item Item Item Item Temple 3 1 0 10 Pagoda 1 1 1 2 1 1 1 Historical site 0 0 1 Cemetery 3 3 5 5 3 2 Roads of traffic. water and % % % % % % % electricity Earth road 25% 30% 40% 27.7% 30% 20% 30% Other roads: Concrete, asphalt, 70% 80% 70% 75% 70% 60% 47.9% aggregate 11 Not available 98% 5 works 1 structure 15% 98% 30% under the Rural clean water supply works project for 100 HHs Electricity 100% 98% 100% 98% 93% 100% 100% Waste collection and treatment 60% Daily Daily 75% 27% Daily 20% Suoi Dia Currently, Currently, Currently, Currently, Reservoir Thanh Bach there was no there was a Curently, there was no Currently, leaded to Cay Reservoir irrigation concrete water was irrigation water was Xoai including a canal from Grade 3 canal taken from canal from taken from Reservoir conveying Loc Thang with a length 12 Irrigation infrastructure Phuc Tho Reservoir Da Sa through the earth canal Reservoir. of 5km Farm No.4. Water Reservoir by dam sluice, with a length Water was conveying Reservoir by was taken by pumping Cay Xoai of 130m that taken by a water from pumping a pump at the Reservoir was pump at the Da Bo B reservoir. leaded water deposited. reservoir. Reservoir,

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Quantity/Ratio No. Content Dinh Trang Loc Thang Phuc Tho Lien Ha Tu Tra Dinh Lac Gia Vien Hoa town through Water was watering for Reservoir taken by a 70ha of rice No.7. pump at the and crops of 3 Currently, reservoir. villages water was including Van taken from Minh, Tan these Xuan and reservoirs by Brun a pump at the reservoirs. Only R’lom Reservoir has a ditch conveying water from the reservoir to water for 40ha of rice field and crops. This ditch was made of concrete Grade 3 with a length of 7.5km. Source: Socio-economic survey in June 2019

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

CHAPTER V: ENVIRONMENTAL AND SOCIAL IMPACT ASSESSMENT

5.1. Type and scale of impacts 254. The implementation of the subproject in the area of commune/town will cause some impacts in the construction period, however significance of impacts is minor and able to be minimized. Once completed, the area of 8 reservoirs will benefit from restoration of public services/facilities, through that promoting economical development and accesses to social services. Important flood presentation structures/works are repaired, reinforced and rehabilitated roads and dams will enhance safety for people and property in adverse weather conditions. 255. Potential negative impacts are identified and screened at each component of the subproject from stage of preparation and construction to operation stage and classified according to the nature of the construction. Most of the negative impacts are temporary, localized and reversible due to the small to medium-sized construction works. Impacts can be minimized by applying appropriate technologies and specific mitigation measures with close monitoring by the Consultant, PMU and local communities. The table below defines the levels of negative impacts based on the levels of waste generated in relation to construction activities2. Table 30. Criteria for classification of negative impacts

Impact/Level Low Medium High Wastewater discharge Exceed technical Exceed technical Exceed technical (domestic and industrial regulations on waste regulations on waste regulations on waste waste) from 1.1 times to less from 1.5 times to less more than 3 times, the than 1.5 times and than 03 times, discharge amount of discharge volume is discharge volume is more than 10 m3/day less than 5 m3/day from 5 to 10 m3/day Dust and Emissions Exceed the standard 1.1 Exceed the standard of Exceed the standard of times to less than 1.5 1.5 times to less than 3 more than 3 times with times with the emission times with the emission the emission over 5000 level less than 500 level of 500 - 5000 m3/hours m3/hours m3/hours Noise Exceed the standard of Exceed the standard 5 Exceed the standard of 2 to 5 dB to 10 dB more than 10 dB Vibration Exceed the standard of Exceed the standard 5 Exceed the standard of 2 to 5 dB to 10 dB more than 10 dB Domestic solid waste Generate less than From 1,000 to 2,000 Generate more than 1,000 kg/day kg/day 2,000 kg/day Hazardous solid waste Generate less than 100 Generate 100-600 Generate more than 600 kg/day kg/day kg/day Fire and oil spilling Less than 2,000 kg 2,000 to 10,000 kg More than 10,000 kg

256. Potential negative environmental and social impacts are also divided into types of impact such as direct, indirect, short-term, long-term and cumulative impacts. - Direct Impact: Direct impact occurs through the direct interaction of a subproject activity with environmental, social or economic components. - Indirect impact: The indirect impacts on the environment and society are the impacts that

2 Reference with Decree No.155/2016/ND-CP on administrative penalties in environmental protection. Environmental and Social Impact Assessment (ESIA) 105

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province are not a direct result of the subproject, which is often created later, or as a result of a complex impact. Indirect effects are also known as secondary effects, or even tertiary effects. - Cumulative impact: is an impact created as a result of a combination of subproject along with other projects that cause the associated impact. These impacts occur when the incremental impact of the subproject is combined with the cumulative effects of past, present, or future projects that have the potentiality for predictability. - Temporary impact: are the effects occurring during the construction or within a short time after construction. - Long-term impact: are the effects that arise during the construction process but most of the results appear in the operational phase and can last for decades. 5.2. Potential positive environmental and social impacts 257. There will be 8 reservoirs to be upgraded under the subproject of repairing and upgrading dam safety (WB8) of Lam Dong province in 5 districts including Di Linh, Don Duong, Bao Lam, Cat Tien and Lam Ha will promote agro-forestry production, diversify crops in mountainous areas with difficult condition through ensuring of water for cultivation, daily life and production associated with natural disaster mitigation measures, and aim at reducing poverty in the project area. 258. Ensure safety for community in downstream areas of the existing eight reservoirs. The renovation, upgrading and repair of the degraded reservoirs have great significance in ensuring the safety of dams and ensuring the safety for about 2,000 households in downstream area. 259. In addition, the subproject implementation will cause direct impacts, ensure irrigation for 1,960 ha of rice and crops, contribute to improving the quality of cultivated land, preventing soil erosion, desertification and reducing water pollution to improve socio-economic conditions in the project area; support the implementation of national target programs in the six project communes, such as the National Target Program on Climate Change Mitigation and Adaptation; Water Resources Development Strategy up to 2020 with a vision to 2050; National Strategy for Rural Clean Water Supply and Sanitation to 2020; Program on socio-economic development in mountainous areas to 2020; National Target Program to build new rural areas; etc. 260. Along with improvement of access roads and operation road of dam and reservoir, the subproject also contributes to improving the traffic conditions of the community, facilitating trade and promoting economic development in locality. 261. Accessibility support for vulnerable communities: With many policies and activities, it ensures that the affected parties will be informed and accessed to the project and the benefits of the project. The subproject will strengthen social activities, facilitate vulnerable groups to participate in project activities, ensure that the projects will bring maximum benefits to the community under current conditions and minimize impact on them. 262. In addition, after being repaired and upgraded, the landscape of the reservoir will be more open, contributing to the improvement of the general landscape of the area and contributing to the promotion of tourism services in the reservoir area and headwork clusters. 5.2.1. Potential negative environmental and social impacts from the subproject 263. Although the implementation of the subproject will not increase the flooded area compared to the present status and will not increase the reservoir capacity, subproject’s activities are related to land acquisition, site clearance and excavation, etc. Therefore, negative impacts from the implementation of subproject should be assessed and evaluated to propose appropriate mitigation measures. The negative impact of the project is identified, analyzed, and evaluated based on the scope of the project, the recipient and the timeframe. Impacts are analyzed in three different project implementation phases: i) pre-construction phase; ii) the project implementation stage; and iii) the operational stage of the project. Impacts will also be considered by impact type: direct impact, Environmental and Social Impact Assessment (ESIA) 106

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province indirect impact, temporary impact, long term impact. The level of impact of the project depends on two main factors: impacts that may arise from project activities and the recipient of these impacts. 5.2.2. Evaluation and forecast of impacts in the preparation phase of the subproject 264. Because the subproject works are scattered in different locations. The size and scope of each project is not large and the duration of the works is not long. As a result, the environmental and social issues in this period are mainly due to consideration of environmental factors in the process of project technical design, land acquisition, site clearance, site clearance, cleaning up and site preparation for construction. Impacts are analyzed as follows: a. Assess the suitability of the project with regard to natural and socio-economic conditions in the project area: 265. The selection of location, design and project planning are carried out on the basis of assessing the objectives of the project in accordance with the natural and socio-economic conditions of the project area. It has been studied the options of capacity and technology being suitable for the land acquisition area in order to maximize the land use efficiency of the project and significantly reduce the impact on the current status basing on the following aspects: - Natural and environmental conditions: Based on the results of the land use status assessment of the project, it shows the relevance of the project with natural and environmental conditions, including: - Traffic: Access to the project is quite convenient by NH, provincial road, inter-district road, inter-commune road, inter-village road to facilitate the transportation of various types of materials for construction of the project. - Current land use: The area of land occupied by the project is mostly in the reservoir bed, traffic land under the management road. Therefore, it is convenient for site clearance and construction of project works items. - Physical environment: According to the results of current status assessment of environmental components of the project area, it shows that o There are no signs of pollution in the project area and no significant environmental pollution sources exist for the physical environment and environment is not significantly affected by the livelihood activities of the project area. o Compared with the permissible limits under QCVN for the current monitoring results, it shows that the environmental bearing capacity of the project area is high, thus it creates significant advantages for the development of the project. . - Ecological environment and biodiversity: The ecological characteristics of the area are planation forest ecosystems that are interspersed with agricultural land. The main crops are acacia, coffee, rice and crops with average productivity. In addition, the land area of the project is not within the boundaries of the biodiversity reserves, biosphere reserve areas and there are no objects in the list of protected areas. Therefore, the impact on ecosystem is not significant. - Socio-economic conditions of the project area: The project is also designed to limit the impacts on the natural and socio-economic environment in order to promote the benefits and minimize adverse factors to ensure the specific objectives and functions and tasks of the project, specifically: o Socio-economic: Within the planning area of the project, there is no architectural and technical works to be relocated and cleared and not to be relocated at the same time. The project is evaluated to be suitable for the socio-economic objectives. o Regarding livelihood: The land occupation is mainly under the land of the reservoir and management road so it does not affect the livelihood of people. At the same time, from the downstream site of the dam, there is no significant socio-economic Environmental and Social Impact Assessment (ESIA) 107

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province factor being affected and the level of damage due to the water use rights is minor. b. Land acquisition and site clearance 266. According to RAP approved by WB with “no-objection” decision on 30 September 2019, the implementation of the subproject “repair and upgrade dam safety (WB8) in Lam Dong province” will affect 12 villages of 7 communes/towns in 5 districts of Lam Dong province. The subproject will cause impacts by land acquisition on 23 HHs in total. Besides, 7 organizations (PCs of 7 communes/towns) will be temporarily affected during the construction period. No HHs are severely affected (losing from 20% of total productive land area or 10% for vulnerable HHs), 1 HHs are displaced due to building temporary houses on dam safety corridor, there are 5 vulnerable HHs (of which, 2 are single women-headed HHs, 1 has disabled people, 2 are EM HHs). 267. Impacts on land: The total affected area is 62,255 m2, including 4,755 m2 of permanently acquired land (16 households) and 457,500 m2 of temporarily acquired land (07 communes/towns). The total temporarily affected area is 457,500 m2 due to the construction of tents and material yards during construction (07 communes/towns). This is an estimate, which will be updated accurately during the construction process of contractors based on actual construction methods. These temporary impacts will be compensated in accordance with the project's policy framework, and the contractor will bear all costs for these temporary impacts. 268. Impacts on constructions, houses, etc.: According to the IOL results, there are 2 grade 4 houses with 194m2 of affected area (1 building in Da Sa reservoir and 1 house in Suoi Dia reservoir), of which one grade 4 house is used for residential purposes (Suoi Dia reservoir) and a grade 4 house (Da Sa reservoir) was previously used as a business shop. In addition, there are some other affected structures including 30m2 of farming facilities, 24 m2 of iron gates and 18m2 of temporary houses (shops/tents). 269. Impact on trees and crops - The total crop area affected by the subproject is 813 m2. - The total number of fruit trees affected is 504 (Mango, Longan, Jackfruit, Litchi, Banana, Grapefruit, Coffee, Macca, etc.). - The total number of affected timber trees is 374 (mainly acacia and eucalyptus). 270. In addition, due to the need to use land during construction to build camps and material yards, some areas of crops and perennials may also be affected. This data will be updated accurately during the construction process of contractors based on actual construction methods. 271. No affected HHs will be considered as severely affected HHs according to the project policy that is the land loss rate of more than 20% of the total productive land area and from 10% for vulnerable HHs, 2 HHs have to relocate, all 5 HHs of the vulnerable group lose less than 10% of production land. 272. In addition, due to the drainage of water to construct the dam, some types of cultivating land such as rice, crops, coffee can be affected. At the time of preparing this report, construction methods of the contractor have yet to be determined, so this report will not mention impacts on crops of HHs under the project area in details. This issue will be updated in the next periodic monitoring phase.

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Table 31. Summary of impacts caused by land acquisition of the subproject Perennial crop Production Annual crop land Aquaculture land Tổng No. Works Communes/town land forest land HH (m2) HH (m2) HH (m2) HH (m2) HH (m2) I Lam Ha district 1 582 5 866 0 0 0 0 6 1,448 Phuc Tho Farm 1 Phuc Tho 1 582 3 662 0 0 0 0 4 1,244 Reservoir 2 Da Sa Reservoir Lien Ha 0 0 2 204 0 0 0 0 2 204 II Don Duong district 2 231 1 40 0 0 0 0 3 271 3 R’lom Reservoir 1 10 0 0 0 0 0 0 1 10 4 Suoi Dia Reservoir Tu Tra 1 221 1 40 0 0 0 0 2 261 5 Cay Xoai Reservoir 0 0 0 0 0 0 0 0 0 0 III Di Linh Reservoir 0 0 4 775 0 0 0 0 4 775 6 Thanh Bach Reservoir Dinh Lac 0 0 4 775 0 0 0 0 4 775 7 Reservoir No. 4 Dinh Trang Hoa 0 0 0 0 0 0 0 0 0 0 IV Bao Lam district 0 0 2 963 0 0 0 0 2 963 8 Loc Thang Reservoir Loc Thang town 0 0 2 963 0 0 0 0 2 963 V Cat Tien district 0 0 0 0 1 1,188 1 110 2 1,298 9 Da Bo B Reservoir Gia Vien 0 0 0 0 1 1,188 1 110 2 1,298 Total 3 813 12 2,644 1 1,188 1 110 17 4,755

Source: Data of IOL investigation and survey, June 2019

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 273. Impact assessment: the level of impact due to land acquisition of subprojects is assessed on average and long-term because: i) the subproject is only implemented repairing and upgrading of existing structures and facilities and the material gathering site is only located within the project’s right of way so that the level of impact on households is insignificant; ii) the majority of land to be recovered is public land under management of People's Committees (accounting for 77.45%); iv) Almost HHs with affected land construct and cultivate on irrigation protection corridors as stipulated by PPC; and v) the subproject causes impact on ethnic minority people and 29 AHs under vulnerable group, however a resettlement plan and ethnic minority development plan will be prepared and implemented for the subproject in line with WB requirements, so impacts on these households will be minimized. b. Clearance of Unexploded Ordnance: 274. The works of the subproject are located in 7 communes of 5 districts including Di Linh, Don Duong, Bao Lam, Lam Ha and Cat Tien, Lam Dong province. These are the mountainous areas that have suffered a lot of bombs during the war and the sub-project area is not in the scope of clearance of unexploded ordnance; therefore, the risk of UXO in the area of subproject works is still very high. It is necessary to carry out inspection before commencing the works so as to avoid accidents that can cause material loss and affect the workers and the community during the implementation of the subproject. 275. Overall assessment of impact level: High negative impact, if it is not properly considered, may affect the safety of people and works, so it needs to strictly comply with the steps required to ensure safe sites before construction. c. Impacts due to activities of site cleaning before construction 276. Dust and emissions: Dust and emissions arise from the operation of equipment during cleaning of construction site. However, because the works are scattered in the agricultural land areas which is far from the residential areas, impacts are insignificant and short-term and it causes little impact on the community. 277. Produced solid waste: The main source of solid waste in this period is from the removal of organic vegetation covers in reservoir s and some of borrow pits prior to construction with an estimated volume of about 208.96 tons. In addition, there is also a small amount of domestic waste, but this amount is too small to cause negative impacts. 278. Accident risk for communities and workers: This effect is mainly arisen from activities of operation of transportation vehicles and equipment gathered on the site, but in this period, there are not many machine; therefore, the risks are assessed to be minor. 279. Impacts on vegetation cover and biodiversity: the activities are carried out in the scope of site clearance. Trees that need to cut down are longan, coffee, acacia and wild plants which have low valuable in terms of biodiversity and natural preservation. Table 32. Volume of biomass generated during the preparation stage Coefficient of Volume of Area Name of works Type of biomass biomass biomass (m2) k (kg) Scattered trees (acacia, coffee, 1244 6.78 8434.32 Phuc Tho Farm eucalyptus, Macca, reservoir etc.) Wild plants, bushes 2500 0.199 497.5

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Coefficient of Volume of Area Name of works Type of biomass biomass biomass (m2) k (kg) Scattered trees (acacia, coffee, 204 6.78 1383.12 Da Sa reservoir eucalyptus, Macca, etc.) Wild plants, bushes 10000 0.199 1990 Scattered trees (e.g. 10 6.78 67.8 R’lom reservoir coffee) Wild plants, bushes 5000 0.199 995 Scattered trees (e.g. Suoi Dia - Cay longan, coffee, 261 6.78 1769.58 Xoai inter- acacia, bamboo) reservoir Wild plants, bushes 9000 0.199 1791 Scattered trees (e.g. 775 6.78 5254.5 Thanh Bach mango, coffee) reservoir Wild plants, bushes 5000 0.199 995

Scattered trees (e.g. 679 6.78 4603.62 Reservoir No.4 coffee, acacia)

Wild plants, bushes 10000 0.199 1990

Scattered trees (e.g. 963 6.78 6529.14 Loc Thang coffee, acacia) reservoir Wild plants, bushes 11000 0.199 2189 Scattered trees Da Bo B (longan, coffee, 110 6.78 745.8 reservoir acacia, bamboo) Wild plants, bushes 5000 0.199 995 Source: Survey of households, June 2019 280. Before having the design of work construction, the subproject has implemented geology investigation drilling. This process is undertaken for all reservoirs works under the subproject. Drilling positions for the geology investigation drilling work are detailed as bellows. Table 33. Summary of impact sources in the construction period

Suoi Phuc Dia - Da Da Thanh Loc No. Content Unit R’lom Tho No. 4 Cay Sa Bo B Bach Thang Farm Xoai Rotary drilling, pumping for 1 washing, in m 40.50 30.50 32.00 80 23.00 29.50 38.00 36.00 depth of 0- 30m, I-III grading Environmental and Social Impact Assessment (ESIA) 111

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province stones Experiments to determine physical and mechanical 2 Sample 12.00 8.00 8.00 26 10.00 8.00 14.00 10.00 parameters of the original soil sample Pouring 3 water for Times - - - 8 - - - - borehole test

Source: Geological report of the subproject 281. General assessment of impacts caused by the geology investigation drilling activity: boreholes without being filled and marked at the drilling positions will facilitate the seepage of polluted materials on the surface that follows rainwater, runs through these holes into the underground layer, affecting the quality of groundwater in the subproject area. Therefore, it needs measures to mitigate this impact. 5.2.3. Evaluation and forecast of impacts in the construction period under the subproject 5.2.3.1. Source of impacts 282. A summary of impact sources in the construction period is presented in the following table. Table 34. Summary of impact sources in the construction period Level of impact Sensitive No. Source of impact Impact/Waste significance receptor A - Source of impacts related to waste Dust generated by Medium, short term, excavation, levelling under control Dust and emission Medium, short term, from material Construction activities: under control Residents in transportation - Excavation the project Dust and emission area. 1 - Repair of main dam, Low, short-term, under from construction Ambient auxiliary dam, control emergency spillway, equipment/machines environment. flood spillway, etc. Wastewater during Low, short-term, under construction control Solid waste from Medium, short term, construction works under control Low, temporary, able to minimize via strict Residents in Waste water implementation of the project mitigation measures area. 2 Worker’s activities Low, temporary, able to Ambient Solid domestic minimize via strict environment. waste implementation of mitigation measures

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Level of impact Sensitive No. Source of impact Impact/Waste significance receptor Maintenance of Ambient 3 transportation equipment, Hazardous waste Low, temporary environment construction machines B - Source of impact unrelated to waste Low, temporary, able to Noise and vibration Residents in minimize via effective 1 Equipment, machines of machines and the project construction and equipment area. management Impact on socio- economic conditions Low, short-term of the area Risks of diseases and social evils due Low, short-term Concentration of workers to concentration of Residents in 2 at the project site workers the project area. Other social impacts are possibly gender- based violation, Low, short-term sexual harassment and abuse, child labour Medium, short-term, Cause disturbance to Residents in Social impact caused by able to minimize via 3 local people the project construction activities managing and area. coordinating measures Residents in the project Traffic congestion Medium, short-term and area. and interruption due 4 Traffic able to control by traffic to material Traffic management plant transportation participants in the project area. 5.3.2.2. Impact on air a. Sources of impact 283. Activities that generate dust and emissions are likely to cause impact on the quality of the air environment, including: i) Construction and excavation activities of works; ii) Activities of construction equipment at site; iii) operation of means of transport; b. Analysis of impact 284. The level of dust generation and air pollutants in the process of construction of subproject depends on the demand for use of fuel and excavation and mobilization of machinery and equipment on the site. According to the subproject design dossier, main activities possibly causing dust, emission at the site are calculated as bellows. ➢ Dust caused by construction material transportation that was swept by the wind 285. According to the document “Environmental Assessment Report of the project of upgrading

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province National Road 39, the Vo Hoi - Diem Dien section (Km91+000-Km107+522), Component C of the Vietnam road asset management project, pages 3 - 14”, estimated coefficient of dust, that is the spilled over construction materials swept up by the wind during the transportation period, is 0.1 - 1 g/m3. (Source: http://documents.worldbank.org/curated/fr/765181468140033921/pdf/E42510V200VIET0disclosed0120202 0130.pdf) 286. According to the report of the investment project, the total materials requiring transportation in the construction period include types as bellows.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Table 35. Volume of construction materials Phuc Tho Suoi Dia - Construction Da Sa R’Lom Thanh Bach Reservoir Loc Thang Da Bo B No. Unit Farm Cay Xoai materials reservoir reservoir reservoir No.4 reservoir reservoir reservoir reservoir Asphalt concrete 1 ton 11 medium course 2 Stone powder kg 102 462 12 26 Sand of all 3 m3 2,158 2,227 1,995 2,790 1,906 1,482 1,581 1,825 kinds Section steel 4 kg 6,711 6,394 prop Tube steel 5 kg 5,300 279 1,664 76 240 839 prop Stones of all 6 m3 3827 24,463 3,315 40,753 8,560 3,150 4,604 3,327 kinds Bituminous 7 kg 178 2,060 805 20,563 46 coat No.4 8 Asphalt coat kg 588 10,819 10,946 1,421 2,211 1,911 775 Steel of all 9 kg 28,180 33,787 62,510 118,449 228,708 104,522 43,060 180,223 kinds 10 Cement kg 581,220 917,968 489,475 1,225,225 1,092,205 526,411 567,883 913,990 Total (except for sand, ton 622 963 572 1,356 1,345 633 613 1,096 stone) Source: Calculation of volume as per the report of investment presentation Note: Density of stone is 2.2 tons/m3, density of sand is 1.38 tons/m3

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Calculation of dust load in Da Sa reservoir: 287. The amount of raw materials (except sand and stone) is converted on an average of 1m3 equivalent to 2.5 tons. Therefore, the total amount of cement, steel, and other materials is: 622 tons, equivalent to 248.8m3. Total amount of cement, sand, stone, steel and other materials is 248.8 + 2,158 m3 (sand) + 3,827 m3 (stone) = 6,233.8 m3. 288. Total amount of dust emitted from material transportation activities during this period is: 0.1×6,233.8 - 1×6,233.8 = 623.38 - 6,233.8 (g) = 0.62338 - 6.2338 (kg). 289. The supply of raw materials is carried out based on the construction progress. The construction period of the whole project is 24 months, equivalent to about 720 days. Average daily dust load is: 0.000866 - 0.00866 (kg / day). 290. Calculations were similar for other reservoirs and the results are as bellows. Table 36. Load of dust generated from construction material transportation and swept up by the wind Average daily dust load Dust load No. Name of reservoir (kg/day) (mg/m.s) Suoi Dia - Cay Xoai inter- 1 0.000769 - 0.007693 0.03 - 0.27 reservoir 2 R’lom reservoir 0.006123 - 0.06123 0.21 - 2.13 3 Da Sa reservoir 0.000866 - 0.00866 0.03 - 0.3 4 Phuc Tho Farm reservoir 0.00376 - 0.037604 0.13 - 1.31 5 Thanh Bach reservoir 0.001528 - 0.015283 0.05 - 0.53 6 Reservoir No.4 0.000679 - 0.006785 0.02 - 0.24 7 Loc Thang reservoir 0.000893 - 0.008931 0.03 - 0.31 8 Da Bo B reservoir 0.000776 - 0.007764 0.03 - 0.27 291. To assess the impact of dust and emissions from the construction material transportation during this period, the Sutton calculation model is applied to determine the concentration of pollutants at a certain point. The concentration of pollutants is calculated by the following formula:

 − (z + h) 2  − (z − h) 2  0,8Eexp 2  + exp 2    2 z   2 z  C =    u z Where: C: concentration of dust in the air (mg/m3) E: Pollutant load resulting from emission source (mg/m.s) z: height of the calculated point: 1 (m) h: height of the road surface compared to the surrounding ground: 0,5 (m) u: wind speed in the area: 1.7 (m/s) x: coordinate of the point calculated (m)

 z : Dust diffusion coefficient in z direction, determined by the formula:

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

 z = 0.53x0.73 x: the distance in the wind direction at the calculated point from the emission source (m) 292. Apply the actual data to formulas, the result of dust concentration caused by the construction material transportation that is swept up by the wind, is as bellows. Table 37. Concentration of pollutants in the air generated from the construction materials spilled out due to transportation and swept up by the wind Concentration of Concentration of pollutants in the air in the pollutants in the air in the No. Name of reservoir distance of (x=) 10m from distance of (x=) 100m from the central line of road the central line of road (mg/m3) (mg/m3) Suoi Dia - Cay Xoai inter- 1 0.008 - 0.083 0.002 - 0.016 reservoir 2 R’lom reservoir 0.066 - 0.659 0.013 - 0.128 3 Da Sa reservoir 0.009 - 0.093 0.002 - 0.018 4 Phuc Tho Farm reservoir 0.04 - 0.405 0.008 - 0.078 5 Thanh Bach reservoir 0.016 - 0.165 0.003 - 0.032 6 Reservoir No.4 0.007 - 0.073 0.001 - 0.014 7 Loc Thang reservoir 0.01 - 0.096 0.002 - 0.019 8 Da Bo B reservoir 0.008 - 0.084 0.002 - 0.016 QCVN 05:2013/BTNMT 0.3 0.3 293. As per QCVN 05:2013/BTNMT, the limit values for the average total suspended particles (TSP) (dust) per hour is 300 µg/m3. Results reveal that concentration of dust resulting from the construction material transportation in all 8 reservoirs were lower than the allowance thresholds in the distance of 10m and 100m from the generating source. ➢ Dust and emissions from the operation of transporting vehicles Table 38. Total volume of raw materials transported in tons Total volume of raw materials to be transported No. Name of reservoir (ton) Suoi Dia - Cay Xoai inter- 1 10,618.1 reservoir 2 R’lom reservoir 94,862.8 3 Da Sa reservoir 12,019.44 4 Phuc Tho Farm reservoir 57,854.86 5 Thanh Bach reservoir 22,807.28 6 Reservoir No.4 9,608.16 7 Loc Thang reservoir 12,923.58 8 Da Bo B reservoir 10,933.9 Source: Report of investment project presentation

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 294. The total weight of transported materials is shown in Table 37. Means of transport used are 7-15 ton trucks.

295. Environmental factors that cause air pollution of transporting vehicles include dust, SO2, NO2, CO, VOC, noise, vibration, etc. Load of pollutants is presented in Table 38 as bellows. Table 39. Load coefficient of pollutants for on-road trucks (in 1000 km) Pollutant load for on-road trucks (kg) Vehicle load of 3.5 - 16 ton Vehicle load of > 16T Pollutant In the Outside Outside Highway In the city Highway city the city the city Dust 0.9 0.9 0.90 1.6 1.6 1.3

SO2 4.29S 4.15S 4.15S 7.26S 7.43S 6.1S

NO2 1.18 1.44 1.44 1.82 2.41 1.98 CO 6.0 2.9 2.9 7.3 3.7 3.1 VOC 2.6 0.8 0.8 5.8 3.0 2.4 (Source: Air Emission Inventories and Controls 3 - 53, WHO 1993) 296. Load of pollutants Table 40. Number of transporting turns Number of transporting Number of No. Name of reservoir turns for the whole transporting turns project per day 1 Suoi Dia - Cay Xoai inter-reservoir 1,061 2 2 R’lom reservoir 9,490 14 3 Da Sa reservoir 1,220 2 4 Phuc Tho Farm reservoir 5,790 8 5 Thanh Bach reservoir 2,281 3 6 Reservoir No.4 961 2 7 Loc Thang reservoir 1,290 2 8 Da Bo B reservoir 1,090 2 297. Estimated time for transportation is 8 hours/day. The distance of transportation in the project area is estimated to be about 50km (including outward and return trips). 298. Load of dust and emissions from transporting vehicles (applicable to 3.5 - 16 ton trucks, running outside the city) is determined as follows.

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Table 41. Load of pollutants from vehicles of transporting materials

Load of pollutants (mg/m*s)

Pollutant

reservoir

R’ lom

oc Thang oc

Da Bo B Bo Da

reservoir reservoir reservoir reservoir reservoir

Cay Xoai Xoai Cay

Suoi Dia

ThanhBach

inter

Reservoir No.4 Reservoir

Da Sa reservoir Sa Da Phuc Tho Farm PhucTho Farm Dust 3.13 21.88 3.13 12.5 4.69 3.13 3.13 3.13

SO2 0.72 5.04 0.72 2.88 1.08 0.72 0.72 0.72

NOx 5 35 5 20 7.5 5 5 5 CO 10.07 70.49 10.07 40.28 15.1 10.07 10.07 10.07 VOC 2.78 19.44 2.78 11.11 4.17 2.78 2.78 2.78 299. To assess the impact of dust and emissions from the construction material transportation during this period, the Sutton calculation model is applied to determine the concentration of pollutants at a certain point. The calculation result is as bellows. Table 42. Concentration of pollutants caused by material transportation activities Concentration of pollutants in the air in the distance of (x=) 10m from the

central line of the road (mg/m3)

Pollutant -

oir QCVN

05:2013

No.4

inter Farm

Da Sa Sa Da R’ lom

Da Bo B Bo Da /BTNMT

reserv reservoir reservoir reservoir reservoir reservoir reservoir

Cay Xoai Xoai Cay

PhucTho Reservoir

Suoi Dia

Loc Thang Loc ThanhBach

Dust 0.97 6.78 0.97 3.88 1.45 0.97 0.97 0.97 0.3

SO2 0.22 1.56 0.22 0.89 0.34 0.22 0.22 0.22 0.35

NOx 1.55 10.85 1.55 6.2 2.33 1.55 1.55 1.55 0.2 CO 3.12 21.85 3.12 12.49 4.68 3.12 3.12 3.12 30 VOC 0.86 6.03 0.86 3.44 1.29 0.86 0.86 0.86 - Concentration of pollutants in the air in the distance of (x=) 100m from the

central line of the road (mg/m3)

Pollutant - QCVN

05:2013

No.4

inter Farm

Da Sa Sa Da R’ lom

Da Bo B Bo Da /BTNMT

reservoir reservoir reservoir reservoir reservoir reservoir reservoir

Cay Xoai Xoai Cay

PhucTho Reservoir

Suoi Dia

Loc Thang Loc ThanhBach Dust 0.19 1.31 0.19 0.75 0.28 0.19 0.19 0.19 0.3

SO2 0.04 0.3 0.04 0.17 0.06 0.04 0.04 0.04 0.35

NOx 0.3 2.1 0.3 1.2 0.45 0.3 0.3 0.3 0.2 CO 0.6 4.23 0.6 2.42 0.91 0.6 0.6 0.6 30 VOC 0.17 1.17 0.17 0.67 0.25 0.17 0.17 0.17 -

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 300. As the data table above, it can be seen that in a distance of 10m, the concentration of pollutants such as dust and NOx in all reservoirs exceeds the allowance limits as per QCVN 05: 2013/BTNMT. SO2 in R’lom and Phuc Tho Farm exceeds thresholds. Concentration of other pollutants such as SO2, CO, VOC in all reservoirs is within allowance limits. Due to the impacts being temporary in a day with 2 - 14 traffic turns and for the entire transporting journey, the impacts are short-term and under control.

301. In a distance of 100m, concentration of pollutants such as NOx in all reservoirs exceeds 1 - 2 times the thresholds as per QCVN 05:2013/BTNMT. Dust in R’lom reservoir exceeds the threshold but that in other reservoirs is within the allowance limit. Concentration of other pollutants including SO2, CO, VOC in all reservoirs is within the allowance limits. Due to the impacts being temporary in a day with 2 - 14 traffic turns and for the entire transporting journey, the impacts are short-term and under control. ➢ Dust, emissions generated from operation of construction machines 302. Volume of petrol consumed by machinery used in the construction period Table 43. Estimation of consumed petrol in the at-site construction period Amount of consumed petrol No. Reservoir Liter diesel Liter/h m3/h Kg/h 1 Da Sa 26.535 4,61 0,0046 4,01 2 Phuc Tho Farm 10.499 1,82 0,0018 1,59 3 Suoi Dia - Cay Xoai 51.466 8,94 0,0089 7,77 4 R’lom 42.338 7,35 0,0074 6,39 5 Thanh Bach 66.929 11,62 0,0116 10,11 6 No.4 10.919 1,90 0,0019 1,65 7 Loc Thang 9.975 1,73 0,0017 1,51 8 Da Bo B 2.596 0,45 0,0005 0,39 Note: 1 working shift is 8 hours. Density of petrol is 870 kg/m3, source: Petrolimex. 303. Weight load, concentration of dust and emissions are summarized in Table 43. Table 44. Weight load of pollutants from machinery and equipment in the construction period Weight load of pollutants (kg/h) Coefficient of pollutants (kg/ton of fuel) (*): TSP: 4,3; SO2: 20S (S=0,05%); NOx:

65; CO: 10

Pollutant

Cay Cay

ervoir

No.4

Farm Farm

Da Sa Sa Da

R’ lom

Da Bo B Bo Da

reservoir reservoir

res reservoir reservoir reservoir reservoir reservoir

PhucTho Reservoir

Xoai inter Xoai

Loc Thang Loc

ThanhBach Suoi Dia Dust 0.017 0.007 0.033 0.027 0.043 0.007 0.006 0.002

SO2 0.00004 0.00002 0.00008 0.00006 0.0001 0.00002 0.00002 0.00001

NOx 0.261 0.103 0.505 0.416 0.657 0.107 0.098 0.025 CO 0.04 0.016 0.078 0.064 0.101 0.016 0.015 0.004 Note: (*) Assessment of sources of air, water and soil pollution, WHO, 1993

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 304. To assess the impact of dust and emissions from the construction material transportation during this period, the Sutton calculation model is applied to determine the concentration of pollutants at a certain point. The concentration of pollutants is calculated by the following formula:

 − (z + h) 2  − (z − h) 2  0,8Eexp 2  + exp 2    2 z   2 z  C =    u z Where: C: concentration of dust in the air (mg/m3) E: Pollutant load resulting from emission source (mg/m*s) z: height of the calculated point: 1 (m) h: height of the road surface compared to the surrounding ground: 0.5 (m) u: wind speed in the area: 1.7 (m/s) x: coordinate of the point calculated (m)

 z : dust diffusion coefficient in z direction, determined by the formula:

 z = 0.53x0.73 x: the distance in the wind direction at the calculated point from the emission source (m) 305. Apply for the actual data, dust concentration from operation of construction machinery is as bellows. Table 45. Concentration of pollutants caused by operation of construction machinery Concentration of pollutants in the air with a distance of (x=) 10m from the road

central line (mg/m3)

Cay Cay Pollutant - QCVN

05:2013

Da Sa Sa Da R’ lom

Da Bo B Bo Da /BTNMT

reservoir reservoir reservoir reservoir reservoir reservoir

oi Dia Dia oi

PhucTho

Xoai inter Xoai Thang Loc

ThanhBach

Reservoir No.4 Reservoir Farm reservoir Farm Dust 0.005 0.002 0.01 0.009 0.013 0.002 0.002 0.001 0.3

SO2 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.35

NOx 0.081 0.032 0.157 0.129 0.204 0.033 0.03 0.008 0.2 CO 0.012 0.005 0.024 0.02 0.031 0.005 0.005 0.001 30 Concentration of pollutants in the air with a distance of (x=) 100m from the road

central line (mg/m3)

Cay Cay Pollutant - QCVN

05:2013 R’ lom

Da Bo B Bo Da /BTNMT

reservoir reservoir reservoir reservoir reservoir reservoir

uc Tho Farm Tho uc Farm

Xoai inter Xoai Thang Loc

ThanhBach

Suoi Dia

Reservoir No.4 Reservoir

Da Sa reservoir Sa Da Ph

Environmental and Social Impact Assessment (ESIA) 121

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Dust 0.001 <0.001 0.002 0.002 0.003 <0.001 <0.001 <0.001 0.3

SO2 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.35

NOx 0.016 0.006 0.03 0.025 0.039 0.006 0.006 0.002 0.2 CO 0.002 0.001 0.005 0.004 0.006 0.001 0.001 <0.001 30 306. The results in Table 44 reveal that in a distance of 10m, according to QCVN 05:2013/BTNMT, concentration of NOx in Thanh Bach reservoir exceeds the threshold. Concentration of other pollutants including dust, SO2, CO in all reservoirs is within the allowable limits. 307. In a distance of 100m, according to QCVN 05:2013/BTNMT, concentration of pollutants in all reservoirs is within the allowable limits. ➢ Dust generated from excavation and embankment 308. During the construction period of project items, diffuse dust is mainly generated from activities including excavation, embankment, lifting up stones/soil by machinery, etc. 309. As estimated, volume of soil from excavation, embankment, disposal is in Table 45. Table 46. Summary of soil volume from excavation, embankment and disposal Volume m3 No. Name of construction Excavation Embankment Total 1 Suoi Dia - Cay Xoai reservoir 16,457 12,639 29,096 2 R’lom reservoir 9,257 19,312 28,569 3 Da Sa reservoir 14,680 11,585 26,265 4 Phuc Tho Farm reservoir 8,157 8,112 16,269 5 Thanh Bach reservoir 10,440 12,411 22,851 6 Reservoir No.4 12,017 7,439 19,456 7 Loc Thang reservoir 6,906 6,318 13,224 8 Da Bo B reservoir 13,551 16,769 30,320 Total 91,465 94,585 186,050 Source: Presentation of the investment report 310. Dust emission coefficient due to excavation in the construction period is according to the document “Environmental Assessment Report of the project of upgrading NR 39, the Vo Hoi - Diem Dien section (Km 91+000 - Km 107+522), Component C of the Vietnam road asset management project, page 3 - 14” and presented in the following table: Table 47. Coefficient of diffuse pollutants from construction activities Estimated emission No. Sources of pollution coefficient Dust generated from excavation, leveling, being swept up by 1 1 - 100 g/m3 wind Dust generated from loading/unloading construction 2 material (cement, soil, stone, sand, etc.), machinery, and 0.1 - 1 g/m3 equipment.

Environmental and Social Impact Assessment (ESIA) 122

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Estimated emission No. Sources of pollution coefficient Dust: 4.3kg/ton DO Exhaust fumes from transport vehicles, mechanical SO2 :0.1kg/ ton DO construction containing dust, CO, hydrocarbons, SO , NO , 3 2 x NO : 55kg/ton DO etc. (3.5 - 16 ton trucks consuming DO petrol with x S=0.05%) CO: 28kg/ton DO VOC: 12 kg/ ton DO Dust generated from sand, soil spilled out vehicles during 4 0.1 - 1 g/m3 the transportation period. Source: http://documents.worldbank.org/curated/fr/765181468140033921/pdf/E42510V200VIET0disclosed 01202020130.pdf 311. Based on emission coefficients and amount of soil, sand used for construction, suspended dust in the air during the project construction period (24 months, equivalent to 720 days) is calculated and the results are in the following table. Table 48. Volume of dust generated from excavation, embankment, leveling in the area of construction works Total volume of Dust generated from excavated/ No. Name of reservoir excavation and embankment embankment (g/h) materials (m3) 1 Suoi Dia - Cay Xoai 29,096 5.05 - 505.14 2 R’lom 28,569 4.96 - 495.99 3 Da Sa 26,265 4.56 - 455.99 4 Phuc Tho Farm 16,269 2.82 - 282.45 5 Thanh Bach 22,851 3.97 - 396.72 6 No.4 19,456 3.38 - 337.78 7 Loc Thang 13,224 2.3 - 229.58 8 Da Bo B 30,320 5.26 - 526.39 312. Average concentration of dust per hour for the construction site area of 2.5ha and emission height of 10m is: Table 49. Concentration of dust from excavation and embankment Dust generated from Average concentration of No. Name of reservoir excavation and embankment dust (µg/m3/h) (g/h) 1 Suoi Dia - Cay Xoai 5.05 - 505.14 20.21 - 2020.56 2 R’lom 4.96 - 495.99 19.84 - 1983.96 3 Da Sa 4.56 - 455.99 18.24 - 1823.96 4 Phuc Tho Farm 2.82 - 282.45 11.3 - 1129.79 5 Thanh Bach 3.97 - 396.72 15.87 - 1586.88

Environmental and Social Impact Assessment (ESIA) 123

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Dust generated from Average concentration of No. Name of reservoir excavation and embankment dust (µg/m3/h) (g/h) 6 No.4 3.38 - 337.78 13.51 - 1351.11 7 Loc Thang 2.3 - 229.58 9.18 - 918.33 8 Da Bo B 5.26 - 526.39 21.06 - 2105.56 QCVN 05/2013/BTMT (Average in 24 hours) 200 313. Based on the results above, according to QCVN 05:2013/BTNMT, average dust concentration, from excavation in the peak period at the construction site in 8 reservoirs that is generated, exceeds the allowance limit. Therefore, it needs to apply mitigation measures in the excavation/embankment period. b) Impact assessment: Low and medium level of impact,. 314. From the results of the analysis of the impact, it shows that the dust concentration and some air pollutants exceed the allowable standards within the distance of 10m far from the boundary of the construction works. Therefore, sensitive objects in this area will be affected. However, according to the survey results in the field, the construction works under the subproject are very far from the residential area, the nearest residential area is about 500 - 1000m far from the works. According to calculations, it shows that dust from transportation vehicles does not exceed the allowable standards. However, in practice, most of the roads to the site have many sections of gravel road. According to experience from many contractors, it shows that the activity of the construction trucks on these roads often generates large amount of dust. Besides, in the surrounding area, there is land for growing coffee, rice and maize of the people with open space so that air pollutants are easily dissolved. As a result, the main affected subjects are construction workers and households living near the aggregate roads where transport means operate. However, these impacts can be limited through appropriate mitigation measures. 5.2.3.3. Impact caused by noise and vibration a. Source of impact 315. Noise and vibration arise from machine and equipment in the site and transport vehicles. b. Analysis of impact • Impact due to noise 316. Source noise arising from the machine and equipment is within 1.5 ÷ 2m from the noise source. According to typical noise standards of construction vehicles and equipment of the "US Environmental Protection Committee - Noise from construction equipment and equipment NJID, 300.1, 31/12/71", it is the basis for controlling noise levels from operation of machine and activities causing noise. Comparing with the construction activities, and the construction equipment will be mobilized on the site and noise levels from the arising sources of the subprojects are as follows: Table 50. The results of calculating noise level at its source during construction period Noise in a distance of 1.5m from No. Machine/Capacity the source (dBA)

Laeq Average 1 Drilling hammer VRM 85 ÷ 88 87 2 Crane 10T 87 ÷ 90 89 3 Crane 16T 75 ÷ 80 78

Environmental and Social Impact Assessment (ESIA) 124

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Noise in a distance of 1.5m from No. Machine/Capacity the source (dBA)

Laeq Average 4 Wheel-mounted crane 16T 88 ÷ 94 91 5 Crawler crane 16T 87 ÷ 89 88 6 Tower crane 25T 78 ÷ 81 80 7 Platform vibrator 1KW 80 ÷ 87 84 8 Rod vibrator 3.5KW 85 ÷ 88 87 9 Auto concrete pump 10 m3/h 76 ÷ 81 79 10 Concrete pump 50m3/h 85 ÷ 89 87 11 Grout pump 40KW 78 ÷ 79 79 12 Tile cutting machine 82 ÷ 83 83 13 Excavator 1.25m3 79 ÷ 82 81 14 Brazing machine 23KW 80 ÷ 83 82 15 Drilling machine 4.5KW 80 ÷ 85 83 16 Hand drill f42mm 85 ÷ 89 87 Self-propelled stamping drilling machine 17 86 ÷ 87 87 fl05 Self-propelled rotary drilling machine 18 76 ÷ 81 79 f76mm 19 Hydraulic elevator 75 ÷ 80 78 20 Gas compressor 1200m3/h 84 ÷ 88 86 21 Gas compressor 600m3/h 83 ÷ 87 85 22 Electricity generator 500KVA 82 ÷ 86 84 23 Concrete mixer 250 Litre 84 ÷ 88 86 24 Bulldozer ≤110Cv 82 ÷ 87 85 25 Bulldozer ≤ 140Cv 82 ÷ 86 84 26 Loader l.25m3 80 ÷ 84 82 27 Mixing container 750 Litre 81 ÷ 85 83 QCCP (1) 85 QCCP (2) 70dBA (6h-21h);55dBA (21h-6h)

317. Noise spreading from the source (vehicles, machines and equipment operating in the construction site) to the surrounding areas is determined by the following formula:

Li = Lp - Ld - Lc (dBA) (*)

Where: Li - Level of noise at the calculated point in a distance of d (m) from the source Lp - Level of noise measured at the source position (with a distance of 1.5m) Environmental and Social Impact Assessment (ESIA) 125

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Ld - Decease of noise level according to the distance d and frequency i:

1+a  r    1  Ld = 20lg     r2     r1 - Distance to the noise source with Lp (m) r2 - Distance calculated for the decrease of noise level to reach Li (m) a - Specific absorption coefficient of noise with ground topography (a = 0)

Lc - Reduction of noise through obstacles. The project area is large, open and have no obstacle, thus L=0. (*): Source: Pham Ngoc Dang, Air Environment, Science and Technology Publisher (2003) 318. Applying the formula in specific conditions, spreading of noise and impact scope of noise pollution from machinery/equipment in the construction time. The estimation result of spreading noise as the estimation model with the scenario of the greatest noise level when all noise sources simultaneously operate. Table 51. Estimation of noise decrease according to distances from the source Level of noise according to distances No. Type of machine/capacity 10m 20m 30m 40m 50m 1 Drilling hammer VRM 70 64 61 58 56 2 Crane 10T 72 66 63 60 58 3 Crane 16T 61 55 52 49 47 4 Crane 25T 69 63 60 57 55 5 Wheel-mounted crane 16T 75 69 65 63 61 6 Crawler crane 16T 72 66 62 60 58 7 Tower crane 25T 63 57 54 51 49 8 Platform vibrator 1KW 67 61 58 55 53 9 Rod vibrator 3.5KW 70 64 61 58 56 10 Auto concrete pump 10 m3/h 62 56 53 50 48 11 Concrete pump 50m3/h 71 65 61 59 57 12 Grout pump 40KW 62 56 53 50 48 13 Tile cutting machine 66 60 57 54 52 14 Excavator 1.25m3 64 58 55 52 50 15 Brazing machine 23KW 65 59 56 53 51 16 Drilling machine 4.5KW 66 60 57 54 52 17 Hand drill f42mm 71 65 61 59 57 18 Self-propelled stamping drilling 70 64 61 58 56 machine fl05 19 Self-propelled rotary drilling machine 62 56 53 50 48 f76mm 20 Hydraulic elevator 61 55 52 49 47

Environmental and Social Impact Assessment (ESIA) 126

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Level of noise according to distances No. Type of machine/capacity 10m 20m 30m 40m 50m 21 Gas compressor 1200m3/h 70 64 60 58 56 22 Gas compressor 600m3/h 69 63 59 57 55 23 Electricity generator 500KVA 68 62 58 56 54 24 Concrete mixer 250 Litre 69 63 60 57 55 25 Bulldozer ≤110Cv 68 62 59 56 54 26 Bulldozer ≤ 140Cv 67 61 58 55 53 27 Loader l.25m3 66 60 56 54 52 28 Mixing container 750 Litre 66 60 57 54 52 Average 67 61 58 55 53 Resonance 79.2 75.7 73.2 71.2 65.2 QCCP (1) 85 QCCP (2) 70dBA (6h-21h); 55dBA (21h-6h) Source: Calculated by the Consultant 319. As per allowance limits in QCVN 24/2016/BYT - National technical regulation on noise - permissible levels of noise in the workplace, noise level of most equipment in various distances is within the allowance limit that is lower than 85dBa with a distance of below 5m from the source. 320. As per allowance limits in QCVN 26:2010/BTNMT - National technical regulation on noise, equipment has average spreading noise per hour being below the allowance limit that is ≤ 70dBA in daytime with a distance of ≥ 20m from the source. However, for night time, distance from the source to ensure that level of spreading noise is <50dBA for most equipment is >50m. 321. The result of spreading noise taking resonance into account is about 85.4 dBA at a distance of 5m from the source. The noise level meets QCVN 24/2016/BYT - National technical regulation on noise - permissible levels of noise in the workplace at a distance of ≥ 10m, and meet QCVN 26:2010/BTNMT (national technical regulation on noise) at a distance of ≥ 40m in daytime. 322. With the results above, level of impact caused by noise from operation of construction equipment is from low to medium. However, it should be considered that the impact is frequent, lasts during the operation time of equipment, hence the impact on workers’ health who work frequently in the construction site is significant. • Impact due to vibration 323. Similar to noise, vibration depends on many factors such as equipment conditions, construction conditions and measures, etc. There are no comprehensive studies on vibration for construction activities. Therefore, here uses the vibration standard for construction vehicles and equipment that is “US Environmental Protection Agency - Noise from construction equipment and machinery NJID, 300.1, 31 December 1971” on the vibration level at source, and use the model of predicting waveform vibration propagation like the above noise with an appropriate adjustment coefficient to be as a basis for evaluation for construction. The predicted results of vibration level of some types of machinery used in the project construction are presented in the following table.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Table 52. The vibration level at source and spreading level of some typical construction machinery used in the project construction Vibration at Name of Spreading level as distances No. source (dBA) machine/Capacity LVeq 1.5 5m 10m 20m 50m 1 Drilling hammer VRM 76 ÷ 79 77.5 64.0 58.0 52.0 42.0 2 Crane 10T 78 ÷ 81 79.5 66.0 60.0 54.0 44.0 3 Crane 16T 78 ÷ 80 79.0 65.5 59.5 53.5 43.5 4 Crane 25T 66 ÷ 69 67.5 54.0 48.0 42.0 32.0 5 Wheel-mounted crane 16T 66 ÷ 72 69.0 55.5 49.5 43.5 33.5 6 Crawler crane 16T 66 ÷ 68 67.0 53.5 47.5 41.5 31.5 7 Tower crane 25T 70 ÷ 73 71.5 58.0 52.0 46.0 36.0 8 Platform vibrator 1KW 72 ÷ 78 75.0 61.5 55.5 49.5 39.5 9 Rod vibrator 3.5KW 76 ÷ 79 77.5 64.0 58.0 52.0 42.0 10 Auto concrete pump 10 59 ÷ 64 61.5 48.0 42.0 36.0 26.0 m3/h 11 Concrete pump 50m3/h 67 ÷ 71 69.0 55.5 49.5 43.5 33.5 12 Grout pump 40KW 61 ÷ 62 61.5 48.0 42.0 36.0 26.0 13 Tile cutting machine 65 ÷ 66 65.5 52.0 46.0 40.0 30.0 14 Excavator 1.25m3 66 ÷ 69 67.5 54.0 48.0 42.0 32.0 15 Brazing machine 23KW 73 ÷ 76 74.5 61.0 55.0 49.0 39.0 16 Drilling machine 4.5KW 73 ÷ 78 75.5 62.0 56.0 50.0 40.0 17 Hand drill f42mm 77 ÷ 81 79.0 65.5 59.5 53.5 43.5 18 Self-propelled stamping 72 ÷ 73 72.5 59.0 53.0 47.0 37.0 drilling machine fl05 19 Self-propelled rotary 63 ÷ 68 65.5 52.0 46.0 40.0 30.0 drilling machine f76mm 20 Hydraulic elevator 63 ÷ 67 65.0 51.5 45.5 39.5 29.5 21 Gas compressor 1200m3/h 72 ÷ 75 73.3 59.8 53.8 47.8 37.8 22 Gas compressor 600m3/h 71 ÷ 74 72.3 58.8 52.8 46.8 36.8 23 Electricity generator 79 ÷ 73 71.5 58.0 52.0 46.0 36.0 500KVA 24 Concrete mixer 250 Litre 69 ÷ 73 71.3 57.8 51.8 45.8 35.8 25 Bulldozer ≤110Cv 68 ÷ 72 70.3 56.8 50.8 44.8 34.8 26 Bulldozer ≤ 140Cv 68 ÷ 72 70.3 56.8 50.8 44.8 34.8 27 Loader l.25m3 68 ÷ 71 69.3 55.8 49.8 43.8 33.8 28 Mixing container 750 67 ÷ 70 68.3 54.8 48.8 42.8 32.8 Litre

Environmental and Social Impact Assessment (ESIA) 128

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Vibration at Name of Spreading level as distances No. source (dBA) machine/Capacity LVeq 1.5 5m 10m 20m 50m Min 61.5 48.0 42.0 36.0 26.0 Max 79.5 66.0 60.0 54.0 44.0 Ever. 71.0 57.5 51.5 45.5 35.5 ∑Lv 90.3 76.8 70.8 64.8 54.8 QCVN 27:2010/BTNMT 75 (common area)

324. With this results, in comparison with QCVN 27:2010/BTNMT - national technical regulation on vibration, equipment under vibration control includes machines for soil construction (e.g. excavators, cranes), vibrators, brazing machines, drilling machines, etc. 325. The average equipment vibration level at source of machinery in the project construction is about 59 dB, the total vibration level near the source is about 81.0 dB. The spreading level of equipment is within allowance limits according to QCVN 27:2010/BTNMT - National technical regulation on vibration at a distance of less than 5m from the source location. 326. When considering the current status of the project area that is significantly away from the surrounding residential areas and there are no structures, it is assessed that the impact of vibration on the environment is not remarkable. However, vibration from operating equipment is likely to directly affect workers on the site and especially those who directly control the construction vehicles and equipment. c) Impact assessment: Medium negative impact level. 327. Through above calculations, noise and vibration generated from construction activities under the subproject effect the surrounding areas but not significantly, because: i) the surrounding area have not residents in a radius of 500 - 1000m; ii) the surrounding is mainly agricultural area; iii) along the transportation route, density of residents and vehicles is low; iv) activities of construction and transportation are discontinuous, depend on actual demands at the site. Thus, noise and vibration mainly affect on construction workers, mitigation measures should be applied for workers. 5.2.3.4. Impact on water environment a. Source of impact 328. The main sources of pollution to the water environment during the construction process include domestic wastewater, construction waste water, and storm water runoff. All construction activities from the gathering of manpower, machinery, equipment, supplies, raw materials to the operation of machinery, backfilling and leveling, factory building, site clearing which are likely to affect the water environment. Water from those types of wastewater possibly contain high amount of organic compositions generated from domestic activities, sediment, grease in construction wastewater, rainwater runoff containing dust, rocky soil, organic substances, grease. Water parameters such as turbidity, suspended solids, Nitrate, Sulfate, BOD5, COD, total coliform will also increase significantly, resulting in a decrease of water quality in reservoirs and downstream areas. b. Analysis of impact ✓ Domestic wastewater 329. Domestic waste water in construction is mainly generated by activities of workers on the site.

Environmental and Social Impact Assessment (ESIA) 129

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province According to the policy of arranging accommodation for construction workers on the construction site, the main components of domestic wastewater in construction include toilet wastewater (black water) and waste water from washbasins (gray water) from the temporary toilet area. 330. The calculation and forecast of water amount generated in the construction period use the following formula: .N Q = NTSH 1000 Where: 3 QNTSH (m /day Volume of domestic wastewater generated and night): N (people/shift): Number of workers on the construction site α (liter/person): Norms of daily-life wastewater generated by workers on the construction site 331. Based on the organization of construction activities under the project, the results are determined exactly. - Demand of workers in the construction period; - According to Standard TCXDVN 33:2006 of Ministry of Construction on water supply - Distribution system and facilities design standard, the amount of water supplied for workers is 80 L/person/day. As per Decree No. 80/2014/ND-CP dated 6 August 2014 on drainage and wastewater treatment, the amount of wastewater is calculated as equal as 100% of consumed water amount. Hence, average norms of daily-life wastewater α = 80 liter/person/day. 332. Calculation for domestic wastewater amount arisen from workers ‘activities at the site is presented in following tables, in which wastewater was mainly generated from the camp area and area with concentrated workers. Details of arising wastewater volume is calculated based on the working time of workers at the site (1 shift/day). Table 53. On-site domestic wastewater load

Demand of using water No. Name of Number of workers 3 reservoir (people)3 (m /day) 1 Suoi Dia - Cay Xoai 20 1.6 2 R’lom 35 2.8 3 Da Sa 25 2 4 Phuc Tho Farm 25 2 5 Thanh Bach 30 2.4 6 No.4 20 1.6 7 Loc Thang 25 2 8 Da Bo B 25 2 333. Amount of domestic wastewater mainly generates from camp areas, a minority comes from construction and auxiliary areas. 334. According to World Health Organization - Chapter 4, Part 1, page 39 (Liquid Waste Inventories and Controls, 4 - 39), the daily amount pollutants discharged by a person generates

3 The data is provided by the design consultant Environmental and Social Impact Assessment (ESIA) 130

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province daily is as bellows. Table 54. Coefficient of pollutants in domestic wastewater

No. Pollutants Unit Discharge coefficient

1 BOD5 (g/person/day) 45 - 54 2 COD (g/person/day) 72 - 102 3 TSS (g/person/day) 70 - 145 4 Total nitrogen (g/person/day) 6 -12 5 Phosphorous (g/person/day) 0.6 - 4.5 6 Ammonium (g/person/day) 3.6 - 7.2 7 Coliform (MPN/100mL) 106- 109 8 Fecal Streptococci (MPN/100mL) 105- 106 9 Helminth eggs (MPN/100mL) 103 Source: Liquid Waste Inventories and Controls, 4-39, WHO, 1993 335. The calculation of pollutants in domestic wastewater based on quick assessment technique of World Health Organization (WHO, 1993) is presented as bellows. Table 55. Load of pollutants in domestic wastewater during the construction period in Suoi Dia - Cay Xoai inter-reservoir Load No. Pollutant Unit (calculated for 20 people) Volume of 1 m3/day 1.6 discharge water 2 BOD g/day 900 - 1080 3 COD g/day 1440 - 2040 4 TSS g/day 3400 - 4400 5 Total nitrogen g/day 120 -240 6 Phosphorous g/day -12 - 90 7 Ammonium g/day -72 - 144 8 Coliform MPN/100mL 2.105- 2.108 9 Fecal Streptococci MPN/100mL 2.104- 2.105 10 Helminth eggs MPN/100mL 2060 336. With load of pollutants and volume of discharge water above, concentration of pollutants in domestic wastewater before treatment is calculated as bellows.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Table 56. Concentration of pollutants in domestic wastewater during the construction period in Suoi Dia - Cay Xoai inter-reservoir QCVN No. Pollutants Unit Concentration 14:2008/BTNMT Column A Column B 1 BOD mg/l -562.5 - 675 30 50 2 COD mg/l -900 - 1,275 - - 3 TSS mg/l 2,125 - 2,750 50 100 4 Total nitrogen mg/l -75 - 150 - - 5 Phosphorous mg/l 7.5 - 56.25 6 10 6 Ammonium mg/l -45 - 90 5 10 7 Total Coliform MPN/100 mg/l 1.25x105- 1.25x108 3,000 5,000 8 Fecal Streptococci MPN/100 mg/l 1.25x104- 1.25x105 - - 9 Helminth eggs MPN/100 mg/l 1287.5 - - 337. Similar calculations for other reservoirs, results for concentration of pollutants in domestic wastewater in the remaining reservoirs are as bellows. Table 57. Concentration of pollutants in domestic wastewater in the construction period QCVN No. Pollutant Unit Concentration 14:2008/BTNMT Column A Column B 1 BOD mg/l -562.5 - 675 30 50 2 COD mg/l -900 - 1,275 - - 3 TSS mg/l 2,125 - 2,750 50 100 4 Total nitrogen mg/l -75 - 150 - - 5 Phosphorous mg/l 7.5 - 56.25 6 10 6 Ammonium mg/l -45 - 90 5 10 7 Total Coliform MPN/100 mg/l 1.25x105- 1.25x108 3.000 5.000 8 Fecal Coliform MPN/100 mg/l 1.25x104- 1.25x105 - - 9 Helminth eggs MPN/100 mg/l 1287.5 - -

338. The calculation results reveal that concentration of some pollutants in domestic wastewater in the construction site of all 8 reservoirs is many times higher than standard thresholds. Therefore, the investor and the construction unit need to have measures of collection and treatment before discharging to discharge water system of the area. ✓ Construction wastewater 339. Wastewater from construction activities such as mixing concrete, washing materials, cooling equipment, cleaning and maintaining machines has high suspended solid amount. 340. Besides, when constructing main items such as the dam, spillway, culverts, the application of measures for surrounding embankment and flow conveying will cause an amount of foundation hole water that needs to pump out continuously during the construction period. This is a type of construction wastewater that is disturbed by excavation and embankment activities and possibly Environmental and Social Impact Assessment (ESIA) 132

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province contains grease, oil, cement, etc. 341. The construction process will use water for concrete mixing to reinforce the dam surface and management and operation roads. The volume of water used for 1m3 of concrete ranges from 175 to 220 liters, taking an average of 0.2 m3 of water/m3 of concrete. Characteristics of wastewater from concrete mixing is very high turbidity and concentration of suspended substances, likely polluting the source of surface water and soil if there is no mitigation measures applied. Table 58. Volume of construction wastewater

No. Name of reservoir Volume of Volume of Volume of Volume of concrete used water wastewater wastewater (5% of used (m3/day) water) m3 m3 m3 1 Suoi Dia - Cay Xoai 1179 236 12 0.022 2 R’lom 2951 590 30 0.056 3 Da Sa 1400 280 14 0.026 4 Phuc Tho Farm 2211 442 22 0.041 5 Thanh Bach 2631 526 26 0.0481 6 No.4 1268 254 13 0.024 7 Loc Thang 1368 274 14 0.026 8 Da Bo B 2202 440 22 0.041 Source: Data from the presentation of the investment report 342. Main compositions in construction wastewater are crumbs, construction sand which are not toxic and easy to deposit. Concentration of pollutants in construction wastewater is presented as bellows. Table 59. Concentration of pollutants in construction wastewater Construction QCVN 40:2011/BTNMT No. Parameter Unit wastewater (column B) (*) 1 pH - 6.99 5.5 ÷ 9 2 SS mg/L 663.0 100 3 COD mg/L 140.9 150

4 BOD5 mg/L 29.26 50 + 5 NH4 mg/L 9.6 10 6 Total nitrogen mg/L 29.27 40 7 Total phosphorous mg/L 4.25 6 8 Fe mg/L 0.72 5 9 Zn mg/L 0.004 3 10 Pb mg/L 0.055 0.5 11 As mg/L 0.05 0.1 12 Grease & oil mg/L 0.02 10

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Construction QCVN 40:2011/BTNMT No. Parameter Unit wastewater (column B) (*) 13 Coliform MPN/100mL 4.3x103 5,000 Source: (*) - Center for Environmental Engineering of Towns and Industrial Areas - CEETIA 343. The wastewater source, if not being collected in a temporary sedimentation tank for treatment, directly discharging to surface water source is likely to pollute reservoirs and downstream water bodies. Therefore, the investor needs to apply wastewater treatment measures before discharging. ✓ Runoff water 344. The characteristic of rainwater is having little of polluted compositions, but when it flows through construction areas, it will bring with it polluted materials such as soil, sand, waste, solid waste on the surface. If there is no appropriate drainage method, it can cause stagnation, negatively affecting the construction process, and an increase of turbidity of surface water. 345. Refer to the calculation results of the Hydrometeorology Station of Lam Dong province on the diagram of surface water exploitation for some irrigation works in Lam Dong province, the amount of rainwater flowing through the project area (owner weak in the rainy season) is calculated as the following formula. Q = 0.278*K*I*F Where: K - Flow coefficient (K = 0.6) I - Intensity of rain (mm/month). The average annual rainfall measured in Lam Dong province (Da Lat station) is 2029.6 mm/year (169.1 mm/month). F - Regional area (m2). Each work of the subproject has a different area, thus the calculation of rainfall flowing through the site surface of each work is also different. Specifically, Table 60. Flow rate of rainfall in each work Flow rate of No. Name of reservoir Area of construction site (ha) rainwater spilling to reservoirs (m3/day) 1 Suoi Dia - Cay Xoai 1.5 423.09 2 R’lom 1.3 366.68 3 Phuc Tho Farm 1.25 352.57 4 Da Sa 1.5 423.09 5 Thanh Bach 1 282.06 6 No.4 1.1 310.26 7 Loc Thang 1.5 423.09 8 Da Bo B 1.5 423.09 346. With that above rainfall, when flowing through the site area, it will carry pollutants such as oil and grease, soil, sand, contributing to the increase of concentration of polluted substances in the project area. The drainage direction of works is residential areas, cultivation land and receiving sources in downstream. 347. According to studies of WHO 1993 (Liquid Waste Inventories and Controls 4-41, Table 4.2.2.3), concentration of polluted substances in overflow rainwater is normally about 0.5 ÷ 1.5 mg

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province N/l; 0.004 ÷ 0.03 mg P/l; 10 ÷ 20 mg COD/l và 10 ÷ 20 mg TSS/l. Estimated load of polluted subtances in overflow rainwater in the subproject area is as bellows. Table 61. Estimated load of polluted substances in overflow rainwater

Load of pollution No. Parameters Concentration (mg/L) (kg/year)

1 TSS 10 ÷ 20 350.32 ÷ 700.63

2 COD 10 ÷ 20 350.32 ÷ 700.63

3 Total N 0.5 ÷ 1.5 17.52 ÷ 52.55

4 Total P 0.004 ÷ 0.03 0.14 ÷ 1.05

348. Remark: In fact, the amount of overflow rainwater will be lower than the calculated number beause the subproject area has a system of canals and ditches, ensuring effective drainage. However, carrying materials on the site surface as well as residual soil and sand will pollute surface water, negatively affecting aquatic life in rivers and lakes, causing flooding and stagnant puddles that obstructs construction. c. Impact assessment: Level of negative impact is medium. 349. Main receptors of pollutants in the subproject area will be surrounding basins and soil. Although the field survey shows no water bodies flowing through reservoirs, the construction works have a certain slope, when raining, the lower areas can be affected due to polluted spilling rainwater flowing down. Wastewater from camps can impact the surrounding areas but these areas are bare land managed by communal PCs, hence the direct impact is marginal. However, this is a possible source of diseases for workers. Overall, wastewater from activities of construction and maintenance (if any) at the site only affects within the construction site. Appropriate control measures should be applied. 5.2.3.5. Impact due to solid waste a. Source of impact 350. Solid waste from construction activities of the subproject is mainly from: i) waste soil and stone from excavation and construction activities; ii) domestic waste from workers' activities; iii) hazardous wastes from related activities. b. Analysis of impact

351. The volume of solid waste of all kinds depends on the quantity of excavated and dredged soil volume on the site, the number of workers to be mobilized on the site, construction management and construction skills of workers on the construction site. ❖ Total construction waste generated from construction activities of the subproject are estimated in the following table: Table 62. Estimation of waste stone and soil volume generated from construction activities of the subproject No. Name of reservoir Volume of waste Volume of solid waste stone/soil (m3 ) (kg/month) 1 Da Sa 5,150 429 2 Phuc Tho Farm 4,600 383 3 Suoi Dia - Cay Xoai 7,240 603 4 R’lom 6,700 558 5 Thanh Bach 5,156 430

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province No. Name of reservoir Volume of waste Volume of solid waste stone/soil (m3 ) (kg/month) 6 No.4 6,049 504 7 Loc Thang 871 73 8 Da Bo B 4,412 368 Total 40,178 3,348 Source: Presentation of the investment report ❖ Total of domestic waste from activities of workers and staff in the construction site is calculated as bellows and presented in Table 65. 352. Arising source of domestic solid waste in the construction site mainly comes from activities of workers at the site. Scale of arising source is determined depending use demand and on-site labor arrangement plan. 353. With this basis, the scale of arising source of on-site domestic solid waste is determined based on: - Arising position that is camp areas and construction areas; - Maximum arising time according to the construction progress that is about 24 months. 354. Volume of arising domestic solid waste is calculated as the following formula:

MCTRSH =CTRSH .N

Where:

MCTRSH(kg/day and Volume of arising domestic solid waste night): N(people): Number of workers on site

αCTRSH(kg/person/shift): Coefficient of domestic solid waste generating by workers on site 355. The basis to forecast the volume of domestic solid waste in the construction period include: - Maximum daily-life solid waste arising norm (αCTRSH) as per QCXDVN 01:2008/BXD for workers in residence in the construction site is αCTRSH = 1.0 kg/person/day. - Number of at-site workers is calculated according to maximum labor demand of the project: N 356. Results for the volume of domestic solid waste in the project construction. Table 63. Results for the volume of domestic solid waste in the project construction

No. N: Number of MCTRSH MCTRSH MCTRSH Name of reservoir 4 workers as day (Kg) as month (kg) as year (kg) (people) 1 Suoi Dia - Cay Xoai 20 20 480 5,760 2 R’lom 35 35 840 10,080 3 Da Sa 25 25 600 7,200 4 Phuc Tho Farm 25 25 600 7,200

4 Source: Presentation of the investment project Environmental and Social Impact Assessment (ESIA) 136

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

No. N: Number of MCTRSH MCTRSH MCTRSH Name of reservoir 4 workers as day (Kg) as month (kg) as year (kg) (people) 5 Thanh Bach 30 30 720 8,640 6 No.4 20 20 480 5,760 7 Loc Thang 25 25 600 7,200 8 Da Bo B 25 25 600 7,200 Source: Calculated by the Consultant ❖ Total hazardous waste from construction activities under the subproject is calculated and summarized as bellows. 357. Currently, there are no comprehensive studies about coefficient of hazardous solid waste arising from basic construction activities. However, here uses the data of each type of arising source, including: - Hazardous solid waste from the construction sites is calculated using the coefficient of hazardous solid waste classifiable from construction solid waste as the study of CEETIA (2007), consisting of sharp metals, hard packaging bags of all kinds accounting for about 0.001%, paint sludge and oil-contaminated solid waste accounting for about 0.02% and other hazardous solid waste containing about 0.005%. - Hazardous solid waste from the repair and maintenance area of equipment and machinery on the construction site is calculated according to the study of EPA (1998), which is oil-contaminated solid wastes (oil rags, accessories, gaskets, seals, etc.) with an average coefficient of about 0.8 kg/machine/month. - Average hazardous solid waste from the camp areas is about 2kg/month. Table 64. Forecast for the volume of hazardous waste arisen from basic construction activities

Code of Arising volume No. Type of hazardous waste hazardous Status Average Total (kg) waste (kg/month) 1 Waste batteries and accumulators 19 06 01 Solid 4 48 2 Waste grease from the oil separating 19 08 10 Liquid 4 48 tank in the vehicle washing area 3 Oil-contaminated solid waste 18 02 01 At the construction area Solid 22 264 At the repair/maintenance area Solid 25 300 4 Waste contains hazardous Solid components - and 5 60 liquid Note: Code of hazardous waste according to Circular No.36/2015/TT-BTNMT dated 30 June 2015 of Ministry of Natural Resources and Environment on hazardous waste management. 358. The results show that volume of excavated/dredged soil, which is not reusable in the construction site and needs to be disposed, is marginal for each construction item, this waste mainly generates at the beginning of the construction phase. Estimated daily domestic waste is not much and the calculation is applied for the case of worker number in the peak time, but the actual Environmental and Social Impact Assessment (ESIA) 137

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province number of workers required daily will be smaller. 359. For hazardous waste (HW): hazardous waste mainly arises from the construction period and types of HW include waste metals, oil-contaminated solid waste, paint sludge, etc. Impacts caused by HW are assessed to have very high level of impact and occurrence possibility. Nevertheless, because the arising volume is not much and serious compliance with measure of managing hazardous solid waste can limit the impact to the minimum level. Besides, as the design plan, the termite killing activities that plan to use Metavina 10DP will be carried out in all subproject works. If this substance is not strictly controlled, the risk of water and soil pollution in the areas surrounding the construction works is very high. c. Impact assessment: Level of negative impact is medium. 360. Receptors for the impact of solid waste of all kinds are mainly soil, water, and air and community health. However, the survey of areas surrounding the project area shows no water bodies that are potentially affected by solid waste. The impact on groundwater takes time to absorb and the arising volume of waste have to be large. For the air, some toxic smells and gases can be arisen but when considering the airy condition of the site, these gases can be diluted to the safe level. For community health, the survey shows that there is no resident in a radius of 500 - 1000m from the construction site. Therefore, main receptors are at-site workers and staff. Diffusion of solid waste of all kinds may have cumulative impacts such as blocking the flow or environment unsanitary, proper management measures should be applied. 5.2.3.6. Impact on the surrounding agricultural cultivation area a. Source of impact 361. The surrounding agricultural lands may be affected by: i) sedimentation generated by erosion at the construction site during rain; ii) excavated soil and stone, construction materials throwing outside the scope of works; iii) dumping of waste is not well managed; iv) operation in borrow pit causes spilling to the surrounding area. b. Analysis of impact 362. Arising sludge by erosion at the construction site of the main dam, spillway and some operation road sections. It is estimated that in the rainy season, the potential erosion volume per meter of ground construction is forecasted to be 0.37m3. This soil volume has been liquefied by rain, easily overflowed to the lowlands surrounding the works. Potential impact during excavation (about 12 months for each site) focuses on heavy rain (August - October). 363. In addition, according to calculation in the design dossier of the sub-project, most of excavated soil volume will be reused for the purpose of embankment. As a result, the amount of excavated soils will need to be temporarily located on site before it can be used for backfill. If this activity is not well managed, it will cause risk of spilling to surrounding areas and affecting agricultural activities of households near the construction site. 364. Moreover, the area of agricultural land around the dumping sites and borrow pit may also be affected if land management measures are not well implemented. c. Impact assessment: Level of impact is medium-low 365. Because all works of the subproject are located on agricultural cultivation land areas, impacts on this activity may occur, however, the level of impacts is minor: i) according to survey results, it shows that the area of agricultural land is mainly used for cultivating coffee trees and fruit trees so that the impacts from spilling of soil and stone in the site will be limited. The area used for growing rice, maize and crop is distributed far away from the construction works; ii) There is a temporary site in the construction site. Land around the works is mainly under management of CPC, therefore, construction activities are less likely to be beyond the scope of site clearance of the works; iii) According to estimates, most of the excavated soil will be utilized for backfilling, so that the amount of disposal soil and the need for additional backfilling will be small. In addition,

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province the waste soil will be dumped at various dumping sites. Therefore, the volume of waste at each dumping site is small. The activities of exploiting backfilling soil carried out in many different borrow pits which are near the construction site. 5.2.3.7. Impact on traffic and traffic safety issues a. Source of impact 366. The following activities create impact factors that may affect road traffic, including i) construction activities at reservoirs and ii) transportation of materials by road: national highways, provincial roads and local roads causes slippery and damaged public facilities. b. Analysis of impact 367. Obstruction of travelling of community: At present, the dam routes are the traffic roads for people in the area to travel. Therefore, asphalting of road surface will directly affect the travelling of people. Therefore, the subproject owner will have reasonable measures to control traffic so that people can still travel during the construction process. 368. Risk of traffic accident on the transport road: Vehicles carrying material and waste from material mines and construction site will bring the soil adhering to the tire. Soil scattered on the road will cause dust and when mixing with water, it will become liquid mud. Liquid mud on the road surface creates a slippery condition and increases the risk of road safety. In addition, the increase in traffic vehicles on inter-village and inter-commune roads will create a significant risk of traffic conflict between the transport vehicles of the sub-project and the means of the local community. 369. Damage and downgrade of roads: According to calculations in the design dossier, it shows that the transportation roads are from national highways to district roads and inter-village roads. Regarding inter-village roads with the distance of 900m to 3km, these roads are the aggregate roads with low loading which are easily affected by the operation of large means of transportation. c. Impact assessment: Negative impacts are relatively large but can be controlled through an appropriate impact management plan. 370. According to the survey, it shows that the works of subproject are located in the remote and isolated areas with limited traffic. The local community is using the operational roads, main dam and spillway to be the internal roads. Construction activities on these roads will obstruct travelling of the community. Therefore, it needs to have an appropriate traffic management measures. 371. Besides, it is expected that some inter-village roads will be used as transportation roads. Currently, these roads are aggregate roads with low loading. Thus, the increase of transport means with heavy loading will cause downgrading and damage to drainage culvert, irrigation system along these roads. It needs to conduct initial assessments of the status and commitment between the owners, the contractor and the local government are required. 5.2.3.8. Impact due to material exploitation a. Source of impact: 372. Because the activity of soil exploitation and backfilling is conducted at works under the subproject, this activity is carried out in eight borrow pits in the surrounding area. b. Analysis of impact 373. The borrow pits which are expected to be exploited to serve construction of works are presented in the following table. Soil exploitation activities in the borrow pits will cause some impacts on the environment such as effect on the surrounding agricultural land, destroying the environmental landscape and losing vegetation cover.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Table 65. Locations of borrow pits expected to be exploited for construction activities No. Name of Dumping site/ Location/ Distance and route reservoir borrow pit Supply source 1 Suoi Dia - Cay Borrow pit Reservoir bed of - Distance of 1 km; Xoai Suoi Dia - Cay Xoai - Transportation in the route reservoir, managed surrounding the reservoir by Tu Tra commune PC 2 R’lom Borrow pit Land piece of Mr. - Distance of 1 km; Chru Jang Kha, - Transportation in the route to R’lom village, Tu the existing reservoir Tra commune 3 Da Sa Borrow pit Village 7, Lien Ha - Distance of 5 km; commune, managed - Transportation in the inter- by Lien Ha commune route (2.9 km of commune PC asphalt road), road surrounding the reservoir (2.1 km of aggregate road). 4 Loc Thang Borrow pit The hillside under - Near the dam foot with a exploitation at the distance of 50m -100m right shoulder of the dam, managed by Loc Thang town PC. 5 Phuc Tho Farm Borrow pit Phuc Loc village, - Distance of 3 km; Phuc Tho commune, - Transportation in the managed by Phuc inter-commune route (2 km Tho commune PC of asphalt road), the road surrounding the reservoir (900m of aggregate road). 6 No.4 Borrow pit Village 5B, Dinh - Distance of 3.7 km; Trang Hoa - Transportation in NR20 (2 commune, managed km) and the inter-village road by Dinh Trang Hoa (1.7 km of earth road). commune PC 7 Thanh Bach Borrow pit Small group 611A, - Distance of 10 km; Gung Re commune, - Transportation in NR20 managed by (8km of asphalt road) and the communal PC inter-village (2 km of earth road). 8 Da Bo B Borrow pit The right shoulder - Distance of 500 m; of the dam, in the - Transportation in the route downstream side, surrounding the reservoir. near the spillway, managed by communal PC c. Impact assessment: Level of negative impact is low. 374. The impacts from the exploitation of construction materials are assessed as minor due to the following reasons: i) the majority of the materials are purchased, only backfilling soil will be taken

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province from the local borrow pits; ii) the need of backfilling soil in reservoirs is very low and most of borrow pits are located around reservoirs; iii) the vegetation in the area is just grass and shrubs and there is no rare specie which need to be be preserved; iv) location of the borrow pits is under management of CPCs which is far from the agriculture cultivation land of people. 5.2.3.9. Impact due to dumping waste soil/stone a. Source of impact 375. Dispose of waste stone and soil that are not used on site at the disposal sites in the area. b. Analysis of impact 376. Waste soil and stone that needs to be dumped is organic soil containing plant roots arising from the excavation of road bed and soil arising from treatment of weak ground. Waste soil and stone does not meet the requirements of the subproject and should be dumped without toxic components. This is a good source of material that can be used to level ground in civil areas that do not require a high level of material. Similar to excavation and transportation of waste materials, in addition to the impacts generated during transportation, waste stone and soil in the dump sites may overlap with neighboring land areas and cause muddy status. Table 66. Demand of dumping and locations of disposal sites under the subproject Volume of Construction waste rock Location of dumping sites Distance and route works and soil (m3 ) Da Sa 5,150 Village 7, Lien Ha commune, - Distance of 5 km; reservoir managed by Lien Ha commune - Transportation in the inter- PC (backfilling the borrow pit). commune road (2.9 km of asphalt road) and the reservoir surrounding road (2.1 km of aggregate road). Phuc Tho 4,600 Phuc Loc village, Phuc Tho - Distance of 3 km; Farm commune, managed by Phuc Tho - Transportation in the inter- reservoir commune PC. commune road (2 km of asphalt road) and the reservoir surrounding road (900 m of aggregate road). Suoi Dia - 7,240 Bare land in the Lac Thanh area, - Distance of 5 km. Cay Xoai Tu Tra commune, managed by - Transportation in the inter- reservoir communal PC. commune road (3 km of asphalt road from Cay Xoai reservoir to Lac Thanh village and 2 km from the earth road to the village). R’lom 6,700 Land of the Chru Jang Kha - Distance of 1 km. reservoir household, R’lom village, Tu - Transportation in the Tra commune. existing management and operation road that is an aggregate road. Thanh 5,156 Bare land of the Dong Lac - Distance of 1 km. Bach cemetery, managed by Dinh Lac - Transportation in the reservoir commune PC. reservoir management road, NR20.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Volume of Construction waste rock Location of dumping sites Distance and route works and soil (m3 ) Reservoir 6,049 Bare land in the dam downstream, - Distance of 500 m. No.4 managed by Dinh Trang Hoa - Transportation in the commune PC. reservoir management road. Loc 871 Bare land in the dam downstream, - Distance of 500 m. Thang managed by Lien Ha commune - Transportation in the reservoir PC. reservoir management road. Da Bo B 4,412 Bare land of Brun village, - Distance of 500 m. reservoir managed by Gia Vien commune - Transportation in the PC. reservoir management road. c. Impact assessment: Level of negative impact is low. 377. The impact from this activity is assessed as minor because: i) soil which needs to be dumped is the organic soil without toxic ingredients; II) the volume of waste dumping is small; III) the dumping of waste is on different locations; IV) the expected locations of waste dumping is expected to be in the vacant land under management of CPC or land of some households having the need of levelling; v) iii) vegetation cover in these areas is just grass and shrubs, and there are no rare species that need to be preserved. 5.2.3.10. Impact due to gathering workers a. Source of impact 378. Gathering of workers at each construction site for an average of 10-12 months is likely to generate relevant issues such as conflicts, losing of order insecurity, infectious diseases, etc. b. Analysis of impact 379. Risk of disease spreading: Unfavourable sanitation conditions in temporary houses and tents in the construction site will lead to diseases such as dengue fever, eye diseases, etc., then spread to residential areas around. In addition, there is the possibility of the spread of social diseases such as HIV / AIDS caused by workers from other localities and vice versa of workers infected by local residents. 380. Arisen conflicts: There is conflict between local people and workers from other localities due to the differences in lifestyle and culture. Especially, people in the subproject area are ethnic minority people. If it is not well managed, it will cause social consequence. Material collisions and disputes, theft of property of people and enterprises, damage to materials, equipment, crops, and so on are the causes of conflict, loss of security in the locality. 381. Impacts on gender equality and children rights: 382. The concentration of about 205 workers in the construction site, of which male accounted for 75% and female made up 25%. This may cause social disturbance, directly affecting women at the construction site or women around the subproject area and their families during construction. In some similar works in the past, unmarried women may be disadvantaged in getting married, being sexually harassed, abused or they will become single mothers. Married women can be affected on family happiness. In addition, they may be contagious by transmitted diseases, social diseases such as HIV/AIDS, gonorrhea, syphilis, etc. If this happens, it will cause mental and psychological disturbances for women or long-term impacts (i.e. affect on next generations). This impact only takes place during construction period of works but may have long-term consequences. However, the impact on women is considered to be low due to the socio-economic survey results in the subproject area has not recorded any negative impacts related to women at the construction sites. In addition, the investor will implement measures to minimize this impact.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province To reduce the personnel cost, there is a risk of that the contractor may hire children for jobs without qualification requirements (as the regulation of Vietnam, children here is understood as people under 15 years old). Because of limited knowledge, children can suffer from labor abuse that affects their psychology, health and ability to learn. However, the impact is assessed to be negilible due to the socio-economic survey results in the subproject area has not recorded issues related to the use of child labor, in addition to the investor will also take measures to minimize this impact. c. Impact assessment: Level of negative impact is medium 383. Arising impacts are assessed as moderate level because: i) the demand of concentration of workers in the site is not large and in a short time; ii) The site area is located in a relatively isolated position, away from residential areas; iii) contractor plans to use some local labor resources. 5.2.3.11. Loss of labor safety for workers a. Source of impact 384. Operation of equipment, practice of construction activities on site, labor camp conditions. b. Analysis of impact 385. It will require to mobilize a number of machines and equipment on the site so the operation of machines and equipment will cause the risk of safety for workers. Electric shock will happen in case of unsafe management of electricity. In addition, workers will also be impacted on health, faced with many types of diseases due to poor living conditions, hygiene and without periodic health care. c. Impact assessment: Level of negative impacts is medium 386. It is the medium impact because mobilized machines and equipment on the site is not the heavy loading machine and equipment, be easy to operate. However, it needs to strictly comply with labor safety measures during the project implementation process to ensure safety for workers and local community and it it required to have rapid response mechanism in case of loss of labor safety. 5.2.3.12. Interruption of irrigation water due to construction a. Source of impact 387. Temporarily stop the operation of reservoirs in the construction period. b. Analysis of impact 388. Repairing and rehabilitating dams at 8 reservoirs potentially cause disruption of irrigation source, affecting agricultural production activities. Therefore, for the subproject, the design of water flow diversion is one of investment content. As a result, impact caused by the disruption of irrigation water source is mitigated. c. Impact assessment: Level of negative impact is low. 389. Because the design technical plan of the project is the cofferdam, water sources still remain at a minimum amount ensuring for production activities. Culvert construction possibly causing flow interruption will arrange an alternative flow, consequently damages caused by the interruption of irrigation water source can be well controlled. 5.2.3.13. Impacts on graves, cultural heritage 390. There are no burial grounds on the site. Besides, surrounding the subproject with a radius of 3 km, there is absolutely no any cultural heritage, so the impact on PCRs is considered negligible. However, it should be noticed that in the process of excavation at borrow pits, cultural assets, graves or antiques may be found.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 5.2.3.14. Impacts on livelihoods and business due to construction 391. Construction activities can interrupt water supply for living conditions, production and business. Currently, the people is using Da Sa reservoir to do aquaculture. In the construction period, this activity will be stopped. However, to mitigate and minimize the impacts, the investor and contractors will coordinate with the authorities to assess significance of impacts to offer suitable support. Besides, during the construction time, contractors will make a plan and organize the construction to mitigate the impacts on these AHs. Localities should compensate and support in line with the policies stated in RPF and EMDF to ensure that they do not worsen the livelihoods and business situation of AHs. 392. When being asked, 100% of people said they are concerned about the environmental impact due to transport of soil and materials. People also worry that many workers come to live and break the quiet environment of the countryside and can cause security problems such as theft. Therefore, the negative impacts are assessed as average which can be managed through suitable mitigation measures 5.2.3.15. Impact on gender equality and children 393. During the construction process, repair of dam may cause cutting of water in one crop season that lead to situation that women have to spend more time in taking water (according to custom and assignment of labour by gender). Reduction of crop land area will directly affect income of women which is also an indirect reason that they have to earn living far from locality. 394. The fact shows that children may be at risk from water. A typical example is the child who was drowned. Therefore, it should be issued policy on safety for children, protection of children’s entitlement, do not allow children to participate in business services around area of upgrading and repairing reservoir. 395. Road will be more dirty in rainy season that may affect psychology of children and they will feel afraid to go to school. Therefore, contractor mainly construct in dry season. 396. However, the activities of the project do not cause discontinuity of water supply source. It is considered as minor impact due to the short time of construction and does not cause long term effect on living of local people. 5.2.3.16. Negative impacts on ethnic minorities 397. Implementation of the subproject brings positive impacts on living of ethnic minority people. However, during the subproject construction process, it also causes certain impacts on ethnic minority people in 7 communes/towns under the subproject. During the construction process, there is 1 AH on land and 1 AH on crops. Especially when constructing and repairing intake, cutting water is mandatory; as a result, lack of water for production in one season will affect living of people. Therefore, during the construction time, the contractor will plan to implement the construction after the people complete harvesting crop or it should be used the method of diversion to serve agriculture production of people. 398. Besides impact due to cutting water source for one crop season, the implementation of subproject also causes some negative impacts such as: obstruction of traffic, dust and raise during the construction process; temporary dismantling of works and canal and increase of adverse impacts due to the increase of speed of vehicles after completion of the project. However, these negative impacts can be mitigated or eliminated. Therefore, ethnic minority development plan of the project is focused on consultation to ensure that local people will have chance to raise their concern, be participated in the project’s activities and benefited from the project. Process of screening and consulting ethnic minority people has been conducted. Community is facilitated in ‘free consultation, advance consultation and consultation containing information” which lead to ‘community receive information and support the project” because of positive impacts brought by the project to them. Therefore, the impact is assessed as moderate and manageable. 5.2.3.17. Impact on the ecosystem

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 399. Construction activities are likely to cause some impacts on the regional ecological environment as bellows. - Loss of vegetation due to sire clearance; - The gathering of a large number of construction workers, machinery and equipment along with blasting, mining activities will cause noise that are likely to disturb habitats of the fauna, the migration of mammals as well as break the tranquility inherent in the area; - Dust and emissions during construction will also affect the growth of plants. However, the impact level is insignificant because the project area is on hills and mountains, it is airy so dust and exhaust gas will be purified naturally; - Without careful management, the concentration of workers at the construction site also causes bad impacts on the fauna of the area because workers can participate in illegal bird and animal fishing, indiscriminate tree felling (especially at Da Bo B Lake - adjacent to Cat Tien National Park). - A large number of people in the construction site may attract follow-up services like food service. Wild animal is possibly served in such services. The wider market for wildlife products will motivate local people to enter the forest to hunt animals. 400. As the survey of the Consultant, flora and fauna ecosystem in the project area is poor. The plants are mainly shrubs, reeds, vines and grass, scattered with some small timber trees. Animals are mainly low-value, small reptiles. Thus, although the construction activities will break the stability of ecosystem, affect habitats and migration of animals and the development of plant species, the significance of impact is minor. Impacts on aquatic ecosystem 401. This subproject does not implement dredging of any reservoir, thus impacts on underwater ecosystem is negligible. In the process of constructing upstream slopes, the construction work will affect the aquatic ecosystem of the reservoir. - The construction activities may impact on the quality of water in 8 reservoirs due to reducing light through the water environment, changing water properties, reducing the ability to dissolve oxygen into water, and as a consequence, will strongly impact on aquatic and floating plants. The strongly affected aquatic plants include green algae, their growing ability will be reduced. - The construction process also likely cause erosion, the surface layer will be washed away, carrying a large amount of soil, leading to turbidity and pollution of stream water. High turbidity will reduce dissolved water amount in water, limiting the growth of aquatic organisms. 402. However, the aquatic ecosystem of the project area is mainly small species, crustaceans, algae with low density and value. Therefore, the impact is minimal. 403. In addition, at present in most of these reservoirs (except Da Bo B and R’lom), people rent water surface to breed freshwater fish. Without prior announcement of construction plan to the people, the construction work can have a great impact on this activity. Contaminants spreading in the water will reduce dissolved oxygen and result in fish deaths. 404. According to the planning of land use of Gia Vien commune, Da Bo B Reservoir has an upstream part (Milestone No. 47 from the middle of the Reservoir to the West) belonging to the Cat Tien National Park, From the middile (Milestone No. 47) of the reservoir to the downstream is outside of the boundary of Cat Tien National Park. The repair and upgrade of Da Bo B Reservoir is only done in the downstream side of the reservoir (dam). On the other hand, around the dam is perennial crop land under the management of Gia Vien Commune People's Committee and has been allocated to Brun Village community on the left shoulder to plant Melaleuca tree with an area

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province of 5.2 ha and Dieu KaIt household on the right dam shoulder to plant cashew with an area of 1.8 ha. Therefore, the subproject does not affect the land use of Cat Tien National Park. The control points for the repair scope of Da Bo B Reservoir’s work are shown in the following table. Table 67. Demand of dumping and locations of disposal sites under the subproject No. X (m) Y (m) 1 458,634.72 1,288,356.94 2 458,626.48 1,288,360.90 3 458,649.78 1,288,447.72 4 458,645.78 1,288,493.83 5 458,810.90 1,288,610.01 6 458,880.47 1,288,491.21

Dạ Bo B Dam

Figure 33. Relative location of Da Bo B Dam with Cat Tien National Park 5.2.3.18. Impact on water supply and use in downstream area 405. It may happen during the construction process. In this case, it will cause dispute or unsatisfied of households because some households have advantage in taking water and some others do not have advantage in position of taking water. It should be committed by households in the village meeting and they should be disseminated about the cases which may happen. However, besides the main water source taking from reservoirs, households can take water from stream to be additional irrigation water source during the three months of construction. 406. Water for drinking and daily life is taken from underground wells and drilled wells so the water cutting to improve the dam does not affect the living of people in the project area. 407. The project objective is to strengthen the capacity of the relevant local authorities to manage and implement upgrading of dam; to encourage participation; to strengthen knowledge and understanding of management and repair; to strengthen equal cooperation among beneficiary users with local authorities as well as management units. This will help people and local communities develop collective water management mechanism to avoid potential conflicts among the stakeholders and minimize potential short-term and long-term impacts. In particular, there may be a conflict between the irrigation company (or the local irrigation staff) and water user when there is

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province a variance in the water supply plan. In other words, it may occur a conflict among the water users, especially the upstream and downstream households when water supply is uneven. 5.2.4. Site-specific impacts 408. The construction of different subproject work items may affect some sensitive specific areas located near construction sites. However, the level of impact is assessed from low to moderate, taking place in a short time and can be minimized.

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Table 68.Specific impacts of the subproject

No. Specific impacts of the subproject Description of the impact Impact location Level of impact I Phuc Tho Farm reservoir

- Construction activities disrupted - Traffic road on the Medium, can be the travelling of the households. dam of Phuc Tho Farm controlled through - Transport of materials can cause reservoir. appropriate mitigation traffic jams, traffic accidents due to activities very small roads. - Location of the camp - The camp area is in the remote surrounding the dam. 1 area and workers are vulnerable to insect attack; - Working near the reservoir, workers are at risk of drowning

The dam surface is the inter-village road

- On rainy days, the management The transportation road Medium, can be route is very muddy that causes to the reservoir with a controlled through difficulty in travelling. length of 1 km. appropriate mitigation

- Material transportation road is activities the road to the production area of the people.

Management road and road for transportation of materials and waste II Da Sa reservoir

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No. Specific impacts of the subproject Description of the impact Impact location Level of impact - It needs to replace all electrical - The electrical system Medium, can be system out of the construction site in in the dam surface. controlled through the construction period, resulting in a - Workers camp area, at appropriate mitigation temporary outage. activities - Conflicts with the people who the construction site. use electricity from the grid running through the dam area. 1 - The camp area is in the remote area and workers are vulnerable to insect attack; - Working near the reservoir, workers are at risk of drowning

The grid runs along the dam body

- Currently the reservoir surface The reservoir area and Medium, can be is being rented by people for worker camp area at the controlled through aquaculture. The construction process construction site appropriate mitigation will stop the aquaculture activities of activities households. - The camp area is in the remote area and workers are vulnerable to 2 insect attack. - Working near the reservoir, workers are at risk of drowning.

Livelihood of the people III R’lom reservoir

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No. Specific impacts of the subproject Description of the impact Impact location Level of impact - Activities of constructing the The area of producing Medium, can be operation road will affect travel of the rice and crops of K’lot controlled through people, interrupt transportation for village, Tu Tra appropriate mitigation agriculture, forestry of the people. commune. activities - On rainy days, the management route is very muddy that causes The camp area difficulty in travelling. surrounding the dam. - The route of transporting 1 materials is also the road to the production area of the people.

The operation road is currently the inter- village road IV Suoi Dia - Cay Xoai inter-reservoir

- Activities of constructing the The transport road on Medium, can be operation road will affect travel of the the dam of Suoi Dia controlled through people, interrupt transportation for reservoir. appropriate mitigation agriculture, forestry of the people, and activities especially affect Da Lat Mil Milk The camp area Company. surrounding the dam. - The camp area is in the remote area and workers are vulnerable to 1 insect attack. - Working near the reservoir, workers are at risk of drowning.

Suoi Dia reservoir The dam surface is the road to Da Lat Mil company Environmental and Social Impact Assessment (ESIA) 150

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No. Specific impacts of the subproject Description of the impact Impact location Level of impact - The construction process needs Location of the house is Medium, can be to remove this stable, influencing adjacent to the dam of controlled through livelihood of this household. Suoi Dia reservoir. appropriate mitigation activities

Suoi Dia reservoir A cow stable right near the dam foot

- It needs to replace all electrical The transport road on Medium, can be system out of the construction site in the dam of Suoi Dia controlled through the construction period, resulting in a reservoir. appropriate mitigation temporary outage. activities - Conflicts with the people who The camp area use electricity from the grid running surrounding the dam. through the dam area. 3 - The camp area is in the remote area and workers are vulnerable to insect attack; - Working near the reservoir, workers are at risk of drowning Suoi Dia reservoir Power lines run along the dam body

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No. Specific impacts of the subproject Description of the impact Impact location Level of impact - Activities of constructing the The transport road on Medium, can be operation road will affect travel of the the dam of Cay Xoai controlled through people, interrupt transportation for reservoir. appropriate mitigation agriculture, forestry of the people. activities - The camp area is in the remote Location of worker area and workers are vulnerable to camps surrounding the insect attack. dam. 4 - Working near the reservoir, workers are at risk of drowning.

Cay Xoai reservoir The dam surface os the inter-village road with many vehicles trvelling. V Thanh Bach reservoir

- Activities of constructing the The transport road to Medium, can be operation road will affect travel of the Thanh Bach reservoir. controlled through people, interrupt transportation for appropriate mitigation agriculture, forestry of the people. Location of worker activities - On rainy days, the management camps surrounding the route is very muddy that causes dam. difficulty in travelling. 1 - The route of transporting materials is also the road to the production area of the people. - The camp area is in the remote The material transportation road is the access area and workers are vulnerable to road to the production area of the people. insect attack. - Working near the reservoir, workers are at risk of drowning. VI Reservoir No.4

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No. Specific impacts of the subproject Description of the impact Impact location Level of impact - Activities of constructing the The transport road on Medium, can be operation road will affect travel of the the dam of Reservoir controlled through people, interrupt transportation for No. 4. appropriate mitigation agriculture, forestry of the people. activities - The camp area is in the remote Location of worker area and workers are vulnerable to camps surrounding the dam. 1 insect attack. - Working near the reservoir, workers are at risk of drowning.

The dam surface is the road to the production of the people. VII Loc Thang reservoir

- Currently, the reservoir surface The fish pond of the Medium, can be is being rented by people for raising household. controlled through fishes. The construction process will Location of worker appropriate mitigation affect this activity of the household. camps surrounding the activities

- The camp area is in the remote dam. area and workers are vulnerable to 1 insect attack. - Working near the reservoir, workers are at risk of drowning.

A fish pond of HHs in the dam downstream. VIII Da Bo B reservoir

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No. Specific impacts of the subproject Description of the impact Impact location Level of impact - The scope of the project is close - The material Medium, can be to Cat Tien National Park, workers can transportation road controlled through participate in illegal bird and animal through Brun village to appropriate mitigation catching, indiscriminate tree cutting. Da Bo B reservoir. activities - The camp area is in the remote area and workers are vulnerable to - Fauna and flora near the Da Bo B dam. 1 insect attack. - Working near the reservoir, - Location of worker workers are at risk of drowning. camps surrounding the - The road to the dam runs dam. through Ma ethnic minority village, this The reservoir is close to Cat Tien National may cause conflicts about customs and Park traditions.

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5.2.5. Evaluating and forecasting of impacts during the operational phase of the subproject 409. Most of the potential impacts during the operational phase are expected to be positive. Temporary construction effects such as dust, noise and vibration will be stopped during operation. When being completed, the use of land, landscape, local income and socio-economic tends to be stable. Improving dam safety and improving irrigation services will promote socio-economic development and improve livelihoods of downstream communities. Some status will be changed in comparison with the previous status. Some risks and negative impacts in the operational phase are as bellows. a. Risk of drowning 410. Reservoir can be a place for washing and bathing activities of people. Therefore, there will be always the risk of drowning if appropriate preventive measures are not taken. b. Flooding due to flood discharge and dam breaking 411. Because the nature of the subproject is to improve the dam safety, the risk of broken dam is very low. Emergency flood discharge can influence the downstream community if not being announced in advance. Possible direct impacts are flooded downstream, loss of assets, crops and life. Indirect impacts may be environmental pollution and disease outbreaks and loss of income. c. Repair and maintenance 412. As the model of operation and maintenance of irrigation works in Lam Dong province, the repair and maintenance activities of irrigation works in Lien Ha, Phuc Tho, Tu Tra, Gia Vien and Dinh Trang Hoa communes, Dinh Lac and Loc Thang Town belong to the subproject as follows. ✓ Earth dam - Cut down bushes, collect burnt and dead grass patches; - Clear clogged drains, re-install drainage knit sheets; - Dredge drainage ditches; - Clean the upstream, downstream slopes; - Fill holes on the downstream slope and check for termites; - Re-paint the break-wave wall, preventing edges on the dam crest; - Check the seal of protecting the milestone points, examine their elevation; - Repair periodically or unexpectedly parts of environmental monitoring equipment. ✓ Spillway 413. Checking the entire surface of the spillway, the overflow and the curve behind the overflow, preventing wall and embankments on two sides of the intake gate, the transport road through the spillway, etc. If there is any abnormal point, there must be a plan and measures to treat them. After the upstream water withdraws, it will be safe to maintain the free-flow spillway. Work order and maintenance measures of the spillway include the following: - Clear grass in the upstream; - Check and treat the overflow surface, the curve behind the overflow; - Rebuild the constructed parts of the wall and process embankments at adjacent points; - Deal with broken concrete surface (if any); - Remove rust and repaint the railing. ✓ Water intake - Apply oil and grease, tighten bolts and fix parts; - Replace parts, repair watertight gaskets;

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province - Scrap rust; - Repair mechanical equipment as required. 414. This activity of repair and maintenance may lead to water cut-off in a short time. This would cause direct impact on the agricultural production and living activities of the downstream people and will indirectly cause effects such as reduce of income due to time of no cultivation, environmental pollution and disease due to lack of water. However, this effect is considered as minor because the time of repair and maintenance is short (around from several days to weeks). The management unit of dam works will make a schedule of maintenance to suitable to seasonal crop activities of the people. 415. Although the irrigation area has not increased compared to the original design, the structure of the crop will have changes due to the steadier supply of water without loss of water. In addition, the area used to experience water shortage for a long time will be supplemented to ensure the design amount, hence it will result in an increase of fertilizers and pesticides. As the data of season structure and using coefficient of fertilizers and pesticides will not change in the subproject areas but because of the supplement area with added water, the amount of used fertilizers and pesticides will increase by 10 - 15%. This will harm the environment and human health. 416. The treatment status of waste from pesticides according to interviews with Farmers’ Association in the subproject areas is as following: After being used, bottles or containers of pesticides were thrown away directly at the place of use. Used containers are easy easy to find in the field, such as along the banks of a field, under a canal or in a garden. Only a small proportion of farmers retain them for sale. However, they are stored unsafely in their fields and gardens. Most farmers was pesticide sprayer right in the field or in the ditches and ponds. Wastewater from washing spray equipment is dumped in the field. Others carries sprayers to wash and pour wastewater directly into the canal. It can be seen that this habit has brought pesticide residues into water bodies and polluted water surface. As a consequence, this is likely to make the people expose contamination when using water for cooking or bathing. Impacts of this action on aquatic ecosystem can also make the people exposed by pesticides via the food pathway. 5.3. Analysis of types of impact 5.3.1. Cumulative impact 417. The subproject consists of many dams, however the dams are scattered in the territory of the province. Moreover, the size and nature of subproject activities are small and simple, so that the implementation of subproject activities is not likely to cause cumulative effects. According to survey and discussion with relevant agencies, at present within the areas of construction items under the subproject WB8 in Lam Dong, there is no other project implemented in the same area and at the same time, so that cumulative impacts created by other projects are not available. 5.3.2. Direct impact 418. Implementation of the subproject will cause direct impacts on the environmental and social conditions in the subproject area. Subproject activities will result in temporary or permanent land loss. Construction activities will cause direct impact on the quality of the surrounding environment of air, soil and water due to the generation of waste such as gas and wastewater and the removal of vegetation. 5.3.3. Indirect impact 419. The temporary and permanent loss of land will cause impacts on the livelihood of affected persons, reducing or losing of income, leading to change of occupation and social conflicts. Indirect impacts are also identified through the risk of deterioration of water quality due to soil erosion caused by vegetation clearing from the construction process. Water pollution due to waste generated from the construction process can lead to a decline in the composition and number of individuals of aquatic species. Or soil compaction due to the use of heavy equipment on farmland can lead to a decline in the number of useful microorganisms in soil due to changes in soil

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province structure. Loss of vegetation will also lead to loss of habitat for many animal species in the subproject area and increase risk of erosion, and flooding. 5.3.4. Temporary impact 420. In general, most of the impacts associated with construction activities within the subproject area are in short-term such as noise, vibration, dust and emissions, and the generation of solid waste and wastewater. These impacts will no longer exist when construction activities are completed. 5.3.5. Long term impact 421. The permanent loss of productive land will cause long-term impact on the affected persons as some households are perceived as losing of productive material which leads to change of their occupation. Environmental incidents such as oil spilling or hazardous chemicals also cause long term impacts on environment and health status of people because the chemical substance has a long time of decay and has possibility to penetrate into environment of soil, water and food chain. The risk of labor accidents also causes long term impacts because the health of labor will be affected or lost.

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CHAPTER VI: ANALYSIS OF ALTERNATIVES

422. With the aim of improving investment efficiency and ensuring safety and minimizing impacts on the environment and society in downstream areas of the reservoir; scenarios are proposed to select the design and construction options that are appropriate to the objectives and actual socio-economic conditions of the 8 reservoirs. Construction activities are mainly reinforcement and repair on the existing works. Because the design option, selection of technical solutions, technology in the construction of the work items of the subproject has no difference in the impact on the environment and society in the subproject area so that the contents of alternative analysis specify the difference related to environment and society in the scenarios of implementing or not implementing the project; the plan to select the optimal construction methods. 6.1. The option of not implementing the subproject 423. The works have been constructed for a long time and seriously downgraded: 424. Dam surface, upstream and downstream slope: All seven dams are the homogeneous dams and dam crests have been not hardened. In the rainy season, it is difficult to observe and operate the works. Upstream slope of dam is paved by dry masonry which has been peeled. There are many landslide positions on downstream slope. Trees grow on the dam slope. There is no drainage system in downstream of dam. - Assessment: Without the subproject, the status above will continue to occur and the status of the dam will become more and more serious due to landslides. On the other hand, it can cause large water loss in the reservoir affecting water supply in downstream. 425. Spillway: After many years of exploitation, the mortar has been peeled, water has been permeated along the body of spillway, and soil on both slopes of spillway is landslide into spillway bed. Some reservoirs have energy dissipation tank which have bee seriously damaged and some remaining reservoirs have no energy dissipation tank. - Assessment: If the subproject is not implemented, the current capacity of the spillways will not be sufficient to meet the drainage requirement if heavy rain and storms occur and a large amount of water will be gathered into reservoir which will cause the status of dam breaking and landslides. Especially spillways with seriously damaged stilling basin, it can cause serious flash floods and affect the life as well as the property of people in downstream area. 426. Intake culvert: In all 8 reservoirs under the subproject, the inlet and outlet of intakes have been seriously damaged. Body of intake has been broken and damaged. It occurs status of leakage along the body of intake to downstream area which cannot be used in accordance with the requirement. 427. Monitoring system: At present, all of the seven reservoirs of the sub-project have no monitoring system so they cannot promote disaster warning efficiency. 428. Operation and management road: All operation and management roads of 8 reservoirs under the subproject are either earth roads or macadam roads which are small and narrow. On the rainy days, it is very difficult to travel and it cannot ensure traffic condition and management of dam. 429. Management house: Currently only R’lom reservoir has a management house but it is relatively simple without electricity so no person stays there. There is no management house for all of the seven remaining reservoirs under the sub-project. This is inconvenient for the operation and response to dam safety incidents. In case of occurring dam safety incident, it causes risk to people and their asset in downstream area. On the other hand, if the routine monitoring and maintenance are not implemented, it will cause damage. General assessment

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province - The current status of the reservoirs causes constraints on the development plan and improvement of productivity and economic efficiency in agricultural production; does not ensure proactive irrigation water; affect the selection of plants and livestock; cannot exploit all economic value from natural land source. - When the subprojects are not deployed, the ecosystem of the area around the reservoirs will be stably remained. However, due to the current status of the degraded reservoirs, it causes the potentiality of breaking dams causing damage to people and structure and breaking ecosystem, especially in downstream area of reservoirs. - In recent years, due to the climate change status, floods appear more with heavy rain and intense intensity which causes high risk of safety due to small reservoir bed. A synchronous construction solution such as the investment in construction, repair and upgrading of reservoirs is imperative to ensure the safety of life and property of people in the downstream area and to serve the requirements of economic development of the locality. 6.2. Implementation of the subject 430. Based on the data and analysis of works status and design calculation, and the undertaking of the investor as well as comments of the locality, the consulting unit proposed construction measure as a combination of repair, innovation and new construction. a. Design measures ❖ Dam 431. Through the assessment of the current situation, the main measure of the dam is to reinforce the dam face and the dam slope to ensure the design cross-section and traffic to manage the structure, and at the same time treat the waterproofing and supplement monitoring equipment to operate the work safely. Reinforce the downstream slope of the dam which has been eroded after long time of use. This is the plan to ensure less environmental pollution during the construction process due to less waste materials, the amount of weathered rock and soil removed is encouraged to make the most use for the purpose of leveling if suitable soil structure. ❖ Flood discharge structure 432. Current flood spillways have deteriorated, especially the downstream energy dissipation, concrete structures, masonry and overflow parts on natural soil ground. The form of free discharge, with overpasses, but only for motorcycles, bicycles and pedestrians, the operation and transportation are relatively convenient. 433. To guarantee safety of the earth dam and actual demand of the people, it needs to invest in hardening the spillway by concrete, reinforce the downstream spillway slope for which have been degraded, damaged and for which are the earth spillways with energy dissipation parts on the natural soil. ❖ Water intake culverts 434. Water intake culverts in some constructions have occurred seepage and leakage. Construction measures are to treat it with waterproofing, for which are still in good condition, it needs only to consider for replacing open and close valve and upstream valve gate. ❖ Other works 435. Some reservoirs do not have a management house. For a reservoir which has a management house (R’Lom lake - Tu Tra commune), the house has been degraded and not convenient for operation. The management road made from soil or grading stones have been degraded and muddy in the rainy season. 436. Therefore, the construction measure is to build a new management house combined with upgrading the management road surface to facilitate the operation and management of the reservoir.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 437. In summary, the design and construction options selected by the Investor and the consultant are the optimal plans to meet the necessary and sufficient conditions, as well as the initial objectives and tasks of the subproject. At the same time, it is also able to minimize the potential negative impacts on the natural and social environment during the subproject implementation. b. Construction measures 438. In addition to socio-economic and environmental benefits compared to the the absence of project implementation, construction measured are chosen for the required items in the bidding documents to minimize impacts on the natural and social environment during implementation. Specific chosen measures are: ❖ Water cutting off and flow diversion 439. Phase 1 (from December to March): at this time the water level of the reservoirs from the NWL (Normal water level) elevation gradually decreases to DWL (dead water level); at this time the flood discharge spillway will be constructed to complete. At the same time, water discharge is implemented to serve for irrigation and empty the reservoir (pumps will be applied if the watre discharge is unable). So that until mid-April (when there is no longer need of irrigation), the water level of the reservoirs drops to the bottom of the old culvert bottom. 440. Phase 2 (from April to June): at this time the water level of the reservoir drops to the bottom of the culvert, embankmenting the cofferdam front of the dam upstreamn slope, repairing the drain will be implemented, meanwhile the construction of the upstream dam slope, the dam surface, wave-break walls will be completed. Filling the reservoir bed with water as normal from July onwards. 441. Other works such as installing monitoring equipment, management houses will be conducted in the dry season from December to April. 442. Overall, the headwork cluster will be constructed completely in the dry season, to not affect cultivation, changing the crop seasons to be earlier than as normal sould be applied to ensure the sufficient water supply without effects on cultivation of the people in the beneficiary areas. Soil excavation and transportation 443. Using a combination of excavators and 5-7 tons trucks to transport to the dump sites as prescribed will minimize noise and dust generated and limit traffic accidents and damages to local roads. 444. The dam construction complies with the regulations of TCVN8297: 2009 "Irrigation works - Earth dams - Technical requirements in the construction by compaction method". The main construction method is to use excavators and trucks to buy and transport from the mines to the construction site, use bulldozers to level soil layer by layer, use compactors to compact the soil. At tight and narrow places where compactors cannot operate, tamping rammers are used. Within 1m surrounding the embankment constructions, rich soil or clay soil without gravel or other impurities are required, it needs to be compacted with tamping rammers or manual compactors to minimize noise and dust. Concrete work 445. Concrete mortar is mixed by a 250-500L mixer, transported and poured manually. Concrete is compacted by a rod vibrator and a plate compactor in combination of small appliances. 446. When pouring and compacting, proper regulations and requirements of the design project must be followed. There are some key points to note: + When installing molds, pouring measures are adopted to avoid concrete mortar falling freely from the height of over 1.5m. + Before pouring new concrete layer, it is necessary to clean and smooth up the old concrete layer to avoid creating cold slots.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province + Construction of concrete wrapped with old structures should be smoothed up and treated well. + The process of concrete mortar construction must be tested and sampled according to current regulations. 447. This method is suitable for construction conditions in rural areas, limiting large vehicles transporting concrete into the works. Planting grass on the downstream slope 448. Grass for slope protection is exploited in the vicinity of the structure. When planting grass to strengthen the slope, grass with strong roots is chosen, it can grow and live strongly and be resilient to drought and have low stems. The grass is taken up by blocks, transported to the planting position and firmly pinned to the slope. The location and size of grass plots comply with the regulations in the design file, ensuring the rapid recovery of native ecosystems and protection of the dam surface against erosion when it rains during the new construction period. Paving work 449. Mainly manual methods are used to limit the impact of machinery and equipment on the surrounding environment and in accordance with local construction conditions. Formwork work 450. Manually install formwork at pour positions, can use most of steel formwork for convinient installation and dismantling to ensure labor safety and save construction cost. Reinforcement work 451. Reinforcing is gathered and processed mainly in warehouses in the construction site and transported into the installation site. At the site, only small details of construction steel and auxiliary works are processed to save time, costs and minimizing the impact on the surrounding environment because the construction areas do not have wide surface. Camp arrangement 452. Camps of workers are arranged in a place with stable terrain, without stagnation, to avoid areas of transportation routes. The camp structure ensures the accommodation of the workers and is convenient in the dismantling process later. The sanitary area must be located away from water sources, with rainwater drainage ditches and collection of wastewater from bathing and washing. Labor recruitment 453. Each construction contractor has its own labor force, in addition the investor will encourage the contractor to use local labor resources for simple construction activities. Request contractors to strictly manage workers, register temporary residence for them, and issue codes of conduct and requirements for community security. Other work 454. Mainly used manual measures to minimize the impact of mobilizing motorbikes to the construction site and measures are suitable to each construction item with existing conditions of each reservoir area.

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CHAPTER VII: ENVIRONMENTAL AND SOCIAL MANAGEMENT PLAN (ESMP)

7.1. Objectives 455. The ESMP of the subproject is developed for specific purposes as follows: - Introduce a plan to implement environmental and social mitigation measures and transfer them into implementation provisions in the technical guidelines of the project; - In order to document the commitments and responsibilities for implementing social environment management, it is necessary to carry out through the different phases of the project, to specify the responsibilities of the stakeholders and the implementation time frame; - Ensure that sufficient resources are allocated based on the subproject budget to carry out activities related to the ESMP; - Ensure that the environmental and social risks of the subproject are predicted and managed appropriately; - Create an effective mechanism for environmental impact assessment; - Monitor environmental components’ quality, identify trends in environmental quality changes, detect the impacts and propose additional actions; - Publicity, transparency of subproject information to local communities, ensure the promotion of community supervision responsibilities in environmental protection tasks of investors in the region; - Continuous collection of quality changes of environmental components throughout the project implementation process to promptly detect and implement negative environmental impacts and propose preventive measures. 7.2. Mitigation measures 7.2.1. Mitigation measures in the preparation phase of the subproject 7.2.1.1. Mitigation measures for impacts caused by land acquisition and site clearance 456. A resettlement and ethnic minority development plan has been prepared and implemented for the subproject. General principles 457. Accordingly, all subproject affected households having their asset or live in the subproject area before the date of completing DMS will be compensated for affected assets. Persons losing income and/or livelihood will be assisted to restore livelihood basing on criteria on eligibility identified by the subproject with consultation of affected person. If until completing the subproject, it is determined that livelihood is not restored to the pre-project level, it will be supplemented assistance measures. Entitlements 458. Affected households will receive policy on compensation, assistance and resettlement (if any) in accordance with regulation of Vietnam and OP 4.12 of WB. Affected households will not be compensated or received assistance from the subproject for acquired area after the dated of announcing about completion of DMS. Mitigation measures 459. According to the requirements of the World Bank, the site clearance plan has been prepared for subprojects. Accordingly, compensation will be made to households and organizations having land and other types of assets on land acquired by the project. In addition, assistance is also made

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province to minimize the impacts on livelihoods, incomes and lives of Ahs to ensure that AHs will have a living condition of at least equal to the pre-construction of the subproject. 460. All costs for land acquisition and site clearance include: i) compensation cost for land; ii) compensation for crops on the land; iii) cost of compensation for works and structures on land; iv) allowances for AHs. These costs are in line with the policies of the Government of Viet Nam and the World Bank (see details in the site clearance plan of the subproject). Table 69. Cost estimate for compensation and site clearance Exchange rate No. Item 1USD = 23,250 VND Ghi chú VNĐ USD I Compensation for land 155,009,000 6,667 Compensation for trees and II 152,097,000 6,542 crops III Compensation for structures 528,113,521 22,715 IV Compensation for public works 142,570,000 6,132 V Assistance allowances 226,959,000 9,762 Allowances for vocational training 1 155,009,000 6,667 and job change Allowance for acquired land with less than 20% of agricultural 51 HH members * 30kg 2 22,950,000 987 production land (assistance for of rice*15000 stabilizing life and production) VND/kg*1 month Allowance for renting an 3 5,000,000 215 accommodation 01 HH 4 Grant for site handover 5,000,000 215 01 HH 5 Assistance for self-resettlement 29,000,000 1,247 01 HH 6 Assistance for vulnerable groups 10,000,000 6.1 HH with single female HHH 4,000,000 172 2 HHs * 2.000.000đ/HH 6.2 EM HH 4,000,000 172 2 HHs * 2.000.000đ/HH 6.3 HH with disable people 2,000,000 86 1 HH * 2.000.000đ/HH VI Sum of I, II, III, IV, V 1,204,748,521 51,817 Cost for compensation and VII 24,094,970 1,036 assistance (2%) VII Contingency cost (10%) 122,884,349 5,285 I Total expenditure for compensation and support 1,351,727,841 58,139 (VND) Source: RAP report of the subproject 7.2.1.2. Prevention and minimizing the impact on site preparation work 461. During the preparation phase of the project, activities to be carried out including vegetation clearing, site clearance, road construction, camp site and auxiliary works construction, construction of housing for construction workers and operation of the project, impact mitigation measures include:

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province - For domestic wastes: hire local labours who do not reside therefore, it does not arise domestic waste. - For the removed plants: In order to limit the impacts caused by the existence of plant biomass on the site, the project should take measures to collect and treat the whole plant biomass immediately on the construction site. - Regarding waste soil, dumping site and construction road: the investor needs to reach agreement and ask the permission from local authority before commencement in the site. 7.2.1.3. UXO clearance and management of geological investigation boreholes 462. UXO clearance will be carried out before land acquisition. This work will be carried out by specialized units of the Army in the province. The investor and specialized clearing units must inform local people at least one month prior to clearance and must use protective barriers and warning signs to reduce the risk to humans and animals. The demining unit and the subproject owner will appoint responsible officials to guide people not to enter the clearance area. Mine clearance procedure will follow the Ministry of Defence’s Circular 146/2007/TT-MOD. 463. Geological investigation boreholes: After drilling for geological investigation, the investigating unit will fill and seal the holes to minimize the impact of intrusion of contaminants through boreholes into groundwater. 7.2.2. Mitigation measures in the construction stage ❖ Mitigation measures for common impacts 464. ECOP is a combination of mitigation measures for generic construction-related impacts arising from subproject activities throughout the construction process and are included in the construction invitations as a mandatory requirement for the construction contractors. ECOP is not officially recognized as a safeguard instrument by the World Bank, but is still used as part of the ESMP because of their usefulness and effectiveness. ❖ Major environmental and social impacts during subproject construction 465. The content of ECOP is limited to construction activity for small-and medium-sized construction impacts, limited scope, and temporary effects and can be mitigated, technically easy to manage with good construction techniques. The environmental and social issues within the scope of this ESIA study include: - Dust and exhaust emissions - Noise and vibration effects - Waste management - Management of hazardous materials - Management of worker camps - Disruption of vegetation cover and ecological resources - Soil erosion - Drainage and sediment control - Stockpile and borrow pits management - Traffic safety management - Disruptions to existing service infrastructure - Chance finds - Management of labor influx - Occupational Health and safety - Community Health and Safety - Communication with local communities ❖ Environmental Code of Practice (ECOP) to minimize general impacts during the construction phase

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Table 70. Environmental Code of Practice (ECOPs) to minimize generic impacts during the construction phase Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision 1) Dust and exhaust - The contractor is responsible for complying with the TCVN 6438-2005: Contractor PMU, relevant requirements of Vietnam's regulations on Road vehicles. Construction ambient air quality. Maximum allowable Supervision - Contractor will ensure that dust emissions will be emission limit. Consultant minimized and will not disturb the local population, No. 35/2005/QD- (CSC) and while implementing dust control measures to BGTVT on quality Supervision maintain a healthy work environment and minimize control, technical Board of Local disturbance in the surrounding area safety and Community - The contractor is responsible for implementing dust environmental mitigation measures (for example, use of irrigation protection; water for irrigation, covering of material vehicles, QCVN 05: etc.). 2013/BTNMT: - Construction materials such as cement, sand and National technical gravel must be properly covered and secured during regulation on air transportation to prevent the spread of soil, sand, quality other materials or dust. - Waster excavated soil and material store must be WBG EHS protected against the effects of wind and the location Guidelines of the material store should be checked for the popular wind direction and location of the sensitive sources. - Use a dust mask when dust is too high. - All means of transport and construction must be complied with the Vietnamese regulations for the control of emission limits for emissions. - All vehicles must undergo a regular emission test and receive: "certificate of quality, technical safety and environmental protection" under Decision No. 35/2005/QD-BGTVT; - Ensure that no solid waste or construction materials (e.g. wood, rubber, oil soaked, cement, paper, plastic, bitumen, etc.) are burned. Environmental and Social Impact Assessment (ESIA) 165

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision 2) Impact by noise - The contractor is responsible for compliance with the - QCVN 26: Contractor PMU, and vibration provisions of Vietnamese law relating to noise and 2010/BTNMT: Construction vibration issues. National Technical Supervision - All vehicles must have "Certificate of quality control, Regulation on noise Consultant technical safety and environmental protection" under - QCVN 27: (CSC) and Decision No. 35/2005/QD-BGTVT; Prevention of 2010/BTNMT: Supervision excessive noise emission from machines that are less Technical Board of Local maintained. regulation on Community - The following measures should be taken to reduce noise: vibration + Select low noise equipment - WBG EHS + Install noise reduction equipment for fan Guidelines + Install noise reduction equipment for exhaust and compression engine parts + Install dead room for covering part of equipment causing noise + Install adjacent sound barrier and minimum surface density of 10kg/m2 to minimize sound transmission + Sound barriers need to be placed near the sound source or the sound transmission source to be effective + Installation of vibration control for mechanical machines + Limits of operation time for certain devices or activities, especially mobile sources in residential areas. + Transfer noise sources to other areas to take advantage of distance and barriers + Install fixed equipment away from residential areas as possible + Take advantage of the natural terrain in the design process to prevent noise + To limit the use of means of transport serving the project through residential area

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision + Establish mechanisms for receiving and feedback 3) Waste I. General waste - QCVN 14: Contractor PMU, management (a) Wastewater 2008/BTNMT: Construction - The contractor is responsible for compliance with National technical Supervision Vietnamese regulations relating to the discharge of regulation on Consultant wastewater into the surrounding environment. domestic water (CSC) and - Consider to recruit local workers to reduce wastewater - QCVN 40: Supervision discharge. 2011/BTNMT: Board of Local - Wastewater treatment systems must be provided for National Technical Community treatment and disposal of wastewater in areas where Regulation on wastewater collection system is not available. Industrial waste Wastewater treatment systems should only be used for water the treatment of sanitary wastewater. When the - Decision No: wastewater treatment system is the selected treatment 59/2007/ND-CP on method, it is necessary to: solid waste • Design and installation in accordance with local management; regulations and guidelines to prevent any risk to public - Decree No. health or the contamination of soil, water or 38/2015/ND-CP on groundwater. material and waste • Well maintain to effectively operate. management • Install in areas with sufficient permeable soil for the - Circular proportion of the design wastewater. 36/2015/TT- • Installed in stable area which is well drained and BTNMT on permeable, with separation between drainage ditch and Hazardous Waste underground water or other receiving waters. Management - Wastewater from washing machines and construction - WBG EHS equipment must be collected into the pond before being Guidelines discharged into the local sewerage system. - When construction works are completed, the waste water tanks and septic tanks must be safely treated or sealed up. - Absolutely comply with the procedure of jet drilling, ensuring that the measures are implemented in a

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision technically correct manner and avoiding spilling out of the environment. - Ensure no toxic additives or chemicals being mixed in the mixture of jet drilling. - Closely follow the procedure of reacting and handling with spilling incidents due to jet drilling. (b) Rainwater - Rainwater should be separated from treatment process and sanitary wastewater to reduce the amount of wastewater to be treated before discharge. - Prevent surface runoff from areas or potential sources of pollution. - In case this approach is impractical, the amount of wastewater from treatment and storage area must be separated from contaminated water - Minimize flow from areas where there are no potential sources of pollution (by minimizing the surface area of the impervious area) and reduce the maximum discharge proportion (use of ponds and lake). - In case rainwater treatment is required to protect the receiving water quality, priority should be given to managing and treating the first discharge of rainwater, where the majority of potential pollutants tend to occur. - When it is allowed by the water quality criteria, rainwater must be managed as a resource, either for groundwater recharge or for meeting the water needs of the locality. - Installation and maintenance of oil water separators and lubricant traps shall be carried out at refueling facilities, factories, parking areas, fuel storage areas. - Mud from rainwater tanks or collection and treatment systems may contain high concentrations of pollutants and must be treated in accordance with local

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision requirements, and to be suitable for protection of public health, safety, preservation and long-term sustainability of water and land resources. (c) Solid waste - Prior to construction, the Contractor shall prepare solid waste control procedures (storage, supply, cleaning schedule, cleaning schedule, etc.) and must carefully pay attention during the construction process - Prior to construction, a permit certificate is required. - Measures should be taken to minimize the potentiality of arising waste and negligent action on the disposal of all waste. In all workplaces, the Contractor shall provide garbage bins, containers and garbage collection facilities. - Solid wastes are temporarily stored at the site in the designated area that has been approved by the Construction Supervision Consultant and the local authorities before collecting and disposal to the licensed collection house. - Waste packaging must be protected against corrosion - Do not fire, burry or dump solid waste. - Recycled materials such as wooden slabs, steel, scaffolding materials, packaging materials will be collected and separated from other sources for reuse. - If not dismantled outside the site, solid waste or construction debris will only be treated in areas identified and approved by the Construction Supervisor and included in the Solid Waste Management Plan. In any case, the contractor will not treat any material in environmentally sensitive areas, such as in areas of natural habitat or in water bodies. II. Hazardous waste (a) Storage of hazardous waste Hazardous waste must be stored to prevent or control

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision accidental release into the air, soil, and water sources in the area where: - Wastes are stored in a way that prevents any disturbance or contact between incompatible wastes and it is allowed to check leaks or spills. Examples, it includes spaces between compatible spaces or physical isolation such as walls or barriers. - Store in a tightly closed container to avoid direct sunlight, wind and rain. - Storage should be on a waterproof surface that is easily cleaned, and properly packaged to contain any spill or leakage. The storage area should be covered to prevent rainwater from accumulating. - Secondary prevention systems must be constructed with appropriate materials for the storage of waste and being sufficient to prevent leakage into the environment. - Secondary storage includes wherever liquid waste is stored in volumes greater than 220 liters. The available volume of secondary containment must be at least 110 percent of the largest storage, or 25 percent of total storage capacity (whichever is greater) at that particular location. Provide adequate ventilation of volatile storage (b) Transportation of hazardous waste - Onsite and offsite waste transportation should be carried out to prevent or minimize spillage, release, and exposure to staff and community. - All waste containers designated for off-site transportation must be protected and labeled with relevant content, properly packed on the transport vehicle before leaving the site and must be accompanied by a shipping certificate (e.g. manifest) describing the load and associated hazards in accordance with the instructions. (c) Burial of hazardous wastes

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision - Chemical wastes in any form must be disposed of at an approved appropriate burial site and in accordance with the requirements of local law. The contractor must have the necessary processing certificate. - Disposal of hazardous waste must be carried out and handled by specially trained and certified workers. - Oils, lubricants, detergents from the maintenance of vehicles and machine must be collected in storage tanks and must be recycled by the company specializing in waste oil recycling at hazardous waste disposal sites. - Unused or rejected bitumen products will be returned to the supplier's factory. 4) Soil erosion - Limit implementation of construction activities on rainy WBG EHS Contractor PMU, days Guidelines Construction - Use geotextile to temporarily cover erosion-prone soil Supervision - Apply a covering layer on ground to absorb water Consultant gradually (CSC) and - Build the walls around the erosion area to block the flow Supervision of water Board of Local - Stabilize soil surface being easily eroded by cultivation Community or concreting 5) Drainage and - Contractors should comply with the detailed design of - TCVN 4447: 1987: Contractor PMU, sediment the wastewater system in the construction plan to prevent Construction Construction management water spills or erosion of hillsides and areas not protected regulations and Supervision from flood, leading to situation that industrial waste acceptance Consultant affects local water resources. - Circular No. (CSC) and - Ensure the sewage system is free from mud and other 22/2010/TT-BXD Supervision obstructions. of the Ministry of Board of Local - Ensure the maintenance of the status of areas that are not Construction Community under construction. regulating labor - Reasonable work of excavation, backfilling, safety in embankment, compliance with construction standards, construction work including measures such as installing of sewage system - QCVN 08-MT:

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision and planting of trees. 2015/BTNMT - - In order to avoid sedimentation causing negatively affect national technical on water resources, a sediment management system standards on surface should be installed to slow or reverse the discharge of water quality sediment until the cultivation is carried out. Sediment management systems may include the removal of waste from canal, canal banks, waste gathering tank, material, post-storm sewerage protection systems, or barriers. - Drainage and diversion: In case the construction works need to be carried out at water sources (bridges, retaining walls, erosion protection), the area should be drained to ensure dry conditions to conduct construction. Water after settling from the construction site must be discharged into the sediment management system to be treated before flowing into the water source. - Implementation of mitigation measures for each specific area under the ESMP should be implemented when changing water flows or constructing dykes. 6) Management of - The use of hazardous materials and chemicals within the - Decree No. Contractor PMU, hazardous materials subproject area must strictly comply with the manufacturer's 38/2015/ND-CP on Construction and chemicals instructions. waste material and Supervision - The use of chemicals on the list of authorized agencies waste management Consultant - Persons exposed to hazardous materials and chemicals - Decision No. (CSC) and should be participated in intensive training in risk prevention 23/2006/QD- Supervision measures due to exposure to hazardous materials and BTNMT: Board of Local chemicals. Promulgating the Community - Persons who are frequently exposed to hazardous materials list of hazardous and chemicals should be periodically checked health (no less wastes than 6 months) and appropriate rest periods are - Circular No. recommended to them 36/2015/TT- Transportation of hazardous materials and chemicals BTNMT on - Use of accessories, pipes and hoses dedicated to the management of materials in the tank (for example, all acids use one type hazardous wastes

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision of connection, all caustics use different equipment) and - Circular No. maintain the procedure to prevent the addition of toxic 03/2016/TT- substances to the inaccurate tank. BNNPTNT on the - Use of transfer equipment which is compatible and list of pesticides conforms to the characteristics of the transferred and allowed to be used designed material to ensure safe transfer. in Vietnam - Regular inspection, maintenance and repair of - Circular No. accessories, pipes and tubes. 21/2015/TT- - Provides secondary prevention or other spill prevention BNNPTNT on and containment measures for containers of hazardous management of materials at possible connection points or spill points. pesticides Overload control - WBG EHS - Prepare written procedures for transportation activities Guidelines including a checklist of measures to be taken during the filling process and use of trained staffs on the process. - Install the measuring equipment on the bin to measure the volume inside. - Use of water pipe connections for tank trucks and fixed connections to the tank. - Provide automatic sealing valves on the tank to avoid overloading. - Use a water tank around the dumping pipe to collect spill material. - Use pipe connection with automatic overload protection valve (float valve). - Pump less capacity into the tank or vessel by placing less material than its available capacity. - In case of overload or over-discharge, it needs to control overload. Response, fire prevention - Storage of incompatible materials (acids, bases, flame retardants, oxidants, chemical reactants) in separate areas, and facilities to separate the material storage area.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision - Provide specific material storage for extremely hazardous or reactive materials. - Use flame arresters on vents from flammable containers. - Provide lightning protection equipment for tanks, transfer stations and other equipment used to treat flammable materials. - Select compatible building materials with stored products for all parts of the storage and distribution system and avoid use of containers for various products without compatibility testing of materials. - Storage of hazardous materials in the isolated area of the main works. If closeness can not be avoided, physical separation must be made using designed structures to prevent fire, explosions, spills, and other emergencies that affect the operation of the facility. - The storage area should be on a waterproof and easily cleaned surface, reasonably packaged to avoid any spills or leaks. Storage areas should be covered to prevent accumulated rainwater. - Prohibit all sources of ignition from areas near flammable tanks. Secondary chamber (liquid) - Transfer of hazardous substances from tank to storage in areas with sufficiently permeable surface to avoid losing of the environment or storage structure not connected to the wastewater / rainwater collection system. . - If no permanent prevention structure is provided for transfer activities, one or more spill prevention forms should be provided such as mobile covering (which can be deployed during the implementation process), pressure reducing valves on rainwater tanks, or closing valves in drainage or sewer equipment, in conjunction with oil water separators.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision - Store hazardous materials in tanks with a capacity equal to or greater than 1,000 liters in areas with a waterproof surface or covering with a cover to contain a minimum of 25% of total storage. - Provides secondary prevention capability for the components (tanks, pipes) of hazardous material storage system in feasible extent. - Carry out routine tank inspection (daily or weekly), and inspect visible parts of tank trucks and piping to avoid leakage. - Use of composite or special storage systems and pipelines, especially the use of underground tanks (USTs) and underground pipelines. If using a dual wall system, it should be provided a means of detecting leakage between the two walls. Training - Employees need to be trained in hazardous waste management. Training programs include: - List of trained staffs - Specific training objectives. - Mechanisms for achieving goals (practical workshops, videos, etc.). - Means determining whether the training program is effective or not - Training procedures for new recruited persons and new courses for existing staffs. Community Participation and Awareness - There is general information for the community that is likely to be affected by the scope and extent of the project activities and on-site preventive and control measures to ensure that there is no impact on people’s health. - Potential effects on human health or the environment caused by incidents or from existing hazardous wastes.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision - Specific and timely information on the behavior and appropriate safety measures will be adopted in the event of an accident including practice exercises at high risk locations. - Access to information needed to understand the nature of the possible impact of an accident and the opportunity to contribute effectively to relevant decisions and to develop community emergency preparedness plans. . - DONREs and DOHs will be informed in time of any environmental incidents. - Preparation and implementation of remedial measures after an oil spill incident. In this case, the contractor must provide a report explaining the reason for the spilling status, corrective actions, and consequence/damage from the spill incident. 7) Biological effect - The Contractor should establish a Management Plan for - Law on Contractor PMU, Site Clearance, plantation restoration and rehabilitation Biodiversity Construction in accordance with the relevant regulations for pre- No.20/2008/QH12 Supervision approval by the Engineer. Site clearance plan must be - Decree Consultant approved by Construction Supervision Consultant and 65/2010/ND-CP (CSC) and Contractor should strictly comply with this plan. Limit guiding the Law on Supervision the number of areas that need to be cleared as low as Biodiversity Board of Local possible. Community - The site clearance in mountainous areas requires the permission of the Ministry of Agriculture and Rural Development. - Contractors need to clear topsoil layer of all areas where topsoil layer will be affected by the work of restoration, including temporary measures such as storage and crowding; the removed topsoil layer will be gathered in the area agreed with monitoring consultants to use for replantation of vegetation. - It is prohibited to use chemicals in the clearing of

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision vegetation - Do not cut trees unless it is regulated in clearing plan of vegetation. - Install a temporary protective fence to protect the trees that need to be retained if necessary before commencing work at the site. - No encroachment on ecological resources unless it is allowed by Construction Supervision Consultant. The consultant should consult with the PMU, the Independent Environmental Monitoring Consultant (IEMC) and other relevant and competent authorities. These areas include areas used for raising birds, animals, or protected areas used to be green space. - The contractor should ensure that there will be no activity of hunting, trapping or poisoning animals. - 8) Control of traffic - Contractors must strictly comply with the provisions of the - Law on Road Contractor PMU, safety Road Traffic Law Traffic No. Construction - Comply with the best traffic safety measures in all aspects 23/2008/QH12; Supervision of subproject activities with the aim of preventing traffic - Decree No. Consultant accidents and minimizing injuries that the subproject staffs 46/2016/ND-CP on (CSC) and and community have to suffer. Measures should include: administrative Supervision • Emphasize safety aspects for the driver. sanctions in road Board of Local • Improve driving skills and driving license and railway traffic Community requirements. - Construction Law • Approve the limits of travel time and arrange the No. 50/2014/QH13; control panel to avoid overloading status - Circular No. • Avoid dangerous roads to reduce the risk of 22/2010/TT-BXD accidents. on labor safety in • Use the speed control device on the truck, and construction of monitor the actions of driver from a long distance works. - Regular maintenance of the vehicle and use of parts - WBG EHS approved by the manufacturer to minimize serious accidents Guidelines that may occur due to failure of equipment.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision - Minimize the interaction of pedestrians with construction vehicles. - Cooperate with local communities and competent agencies to improve the sign board, vision and overall safety of roads, especially along routes near schools or other places where there are children. Coordinate with local communities on traffic education and safety for pedestrian (school education campaign). - Coordinate with emergency response agencies to ensure that appropriate first aid measures are provided in the event of an accident. - Use locally sourced materials, whenever possible, to minimize transportation distance. Locate associated facilities such as labor camps in the subproject area and arrange transportation of workers by bus to minimize external traffic. - Use safe traffic control measures, including signs and flyers to warn of dangerous conditions. - 9) Interruption in - Disruption in providing water, gas, electricity, internet - Decree No.: Contractor PMU, providing public services with planning and without planning: The 167/2013/ND-CP Construction services contractor must conduct prior consultation and prepare a stipulating Supervision contingency plan with the local authorities about the administrative Consultant consequences of discontinuing the service or sanctions in the (CSC) and disconnection. field of security, Supervision - Coordinate with service suppliers to set up a reasonable social order and Board of Local construction schedule. safety; Prevention Community - Provide information to affected households on work of social evils schedule as well as plan to stop providing services (at least 5 days in advance). - Contractors must ensure that there will be alternative option to water supply to affected residents in case of disruption more than one day. - Any damage to the existing utility system of the cable line will be reported to the authorities and repaired as

Environmental and Social Impact Assessment (ESIA) 178

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision soon as possible. - 10) Management of - The camps of contractor and workers are built - Labor Law Contractor PMU, workers' camps temporarily on the land of the subproject. 10/2012/QH13 Construction - These areas are built to be far enough in comparison with - WBG EHS Supervision area used for gathering construction materials, storing Guidelines Consultant waste and waste oil, discharge canals, sensitive sites such (CSC) and as schools, hospitals, churches, temples, and other Supervision hazardous areas such as landslide or erosion area. Board of Local - The camps should be ensured good conditions such as Community ventilation, sunlight, clean water, garbage collection, septic tank, mosquito net, fire extinguisher, medical first aid kit, and other health protection facilities for workers. - 11) Management of - Employ local workers for simple jobs, and to limit the - Decree No.: Contractor PMU, social issues related increase in number of workers in the subproject area. 167/2013/ND-CP Construction to labor influx - Should explain to the workers about the local customs stipulating Supervision and practices to avoid conflict with local people. administrative Consultant - Owner of the subproject and contractors should sanctions in the (CSC) and cooperate with local agencies to prevent social evils. field of security, Supervision - Strengthening of campaigns to eliminate social evils social order and Board of Local - Contact local organizations to ensure effective safeguard; Community management and GRM so that affected local people can Prevention of social be trusted. evils - Workers temporarily live in camps and rental housing - WBG EHS must register their temporary residence with local Guidelines authorities. - Employees are strictly forbidden to: + Use alcoholic beverages during construction + Arguing and fighting + Participating in gambling, social evils such as drug use, prostitution + Indiscriminately throwing of garbage - 12) Chance finds If the contractor discovers archaeological sites, historical - Law on amendment Contractor PMU, relics, bones and display, including cemetery and / or and Construction

Environmental and Social Impact Assessment (ESIA) 179

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision individual graves during excavation or construction, the supplementation of Supervision contractor shall: some articles of the Consultant + Stop building activities in the found area law on cultural (CSC) and + Delineate the location or area of discovery; heritage No. Supervision + Protect the location to prevent any damage or loss of 28/2001/QH10; Board of Local moving objects. In the case of objects which may be - Law on Community dismantled or sensitive, it should be arranged a night supplementation guard person until the agency responsible for and amendment of protecting the local heritage or the Department of cultural heritages. Culture, Sports and Tourism comes to receive; 32/2009/QH12; + Inform the Construction Supervision Consultant and - Decree No. the consultant will inform the local or national 98/2010/ND-CP on agency being responsible for heritage protection supplementation (within 24 hours or less); and amendment + The agency being responsible for protecting the local or national heritage will be responsible for protecting and preserving these sites before deciding on the next procedure. A preliminary assessment report on the detection process is in place. The significance and importance of the findings are evaluated according to different criteria related to cultural heritage, including aesthetic, historical, scientific, research, social and economic values; + Decide on how to deal with the search made by the agency responsible for protecting the local heritage. This may include changes in arrangement (for example when finding a relic which cannot be removed), conservation, preservation, restoration and recovery; + If locations and/or cultural heritage are of high value and the preservation of the locations is recommended by experts and required by the agency responsible for the protection of the local heritage,

Environmental and Social Impact Assessment (ESIA) 180

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision the Project Owner should change the necessary design to meet the requirements and preserve these positions; + Decisions related to search and management will be notified in writing to the competent authority + Construction works is continued only after obtaining permission from the agency responsible for protecting the local heritage.

Environmental and Social Impact Assessment (ESIA) 181

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision - 13) Occupational Over-exertion - Directive No. Contractor PMU, health and safety - Training for workers on lifting and handling techniques in 02/2008/CT-BXD Construction construction, including setting a weight limit on which on adjustment and Supervision mechanical assistance or a two-person lift is required. strengthening of Consultant - Prepare implementation plan to minimize the need for measures to ensure (CSC) and manual transportation of heavy loads. labor safety and Supervision - Select tools and design working points to reduce power hygiene in units Board of Local requirements and retention time, and promote improved under construction Community posture, including workstations. sector - Implement administrative control on working processes, - Circular No. such as job rotation and rest or break. 22/2010/TT-BXD Slipping and falling dated 03/12/2010 of - Well implement sanitation measures, such as placement the Ministry of and arrangement of construction materials or debris in Construction areas being arranged far away from walkways. regulating labor - Regular cleaning of waste and liquid waste. safety in - Locate electrical wires in common areas and marked construction of corridors. works - Use anti-slip shoes. - QCVN 18: Work at height 2014/BXD: - Training and use of temporary fall prevention devices, National technical such as rails or other fences that may support a weight of regulation on 200 pounds when working at or above two meters or at construction safety any height with the risks including falling into machines - WBG EHS being operated, into water or other liquids, into the Guidelines hazardous substance, or the open area on the work place. - Training and use of personal protective equipment, such as seat belts and harnesses which are capable of supporting 2,268 kg (also described in this above section), rescue procedures for fallen persons to prevent falling from the height. The connection point of the anti- falling system can also support 2,268 kg. - Use control areas and safety monitoring system to warn

Environmental and Social Impact Assessment (ESIA) 182

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision workers about locations near dangerous areas, mark and label openings on the floor, roof or surface. Impacts by materials - Use restricted or discharge areas and/or gutter to safely move waste from top to bottom. - Saw, cut, grind, split or chisel with appropriate protection and fasten when applied. - Maintain specific movement method to avoid heavy equipment crossing discarded materials. - Use protective measures when someone or material is dropped by scaffolding and the edges of work surfaces, such as handrails and planks, to prevent material from falling down. - Removal of work areas during blasting and use of explosive carpet or deflating methods to minimize flying stones if the work is conducted close to the person or works. - Wear appropriate personal protective equipment, such as safety glasses, masks, helmet, and safety shoes. Moving of machinery - Planning and segregating of traffic locations, operation of machines and walking, and controlling of traffic vehicles through one-way traffic, setting speed limit, and people equipped on site with jacket to be easy to observe or wears specialized clothing to regulate traffic. - Ensure easy observability through the use of identifiable jackets when working or walking through heavy equipment operating areas and training for workers to check eye contact with the operator of the equipment before receiving the vehicle. - Make sure that the moving equipment is equipped with an alarm system. - The use of lifting equipment which is well checked and

Environmental and Social Impact Assessment (ESIA) 183

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision maintained in line with the load such as the crane and ensure the load when lifting them higher than the required height. Dust - Implement dust minimization techniques such as using water or non-toxic chemicals to minimize dirt from vehicle movements. - Personal protective equipment such as mask will be used where dust levels are too high. Embankment and Confined space - Control of specific factors on the site can contribute to the instability of the slope of excavation activity such as the use of water rejecting technique in excavation, side wall plate support, and adjustment of slope to eliminate or minimize the risk of collapse, forming traps or drowning. - Provide safe means to access to and out of excavated areas, such as grade ramps, stairs and ladders. - Avoid operating the burning equipment for a long time in excavation or embankment areas where other workers have to work unless the area is ventilated. Other site risks - Use trained staff to identify and eliminate wastes from containers, pots, vats, processing equipment or contaminated soil as the first step in order to be able to excavate or construct, dismantle or destroy the safety. - Use specially trained staff to identify and eliminate potentially hazardous materials in the construction prior to demolition including, insulators or structure elements containing Amiang, Polychlorinated Biphenyls, electrical components containing mercury. - Use appropriate protective equipment based on health and safety assessment including respirators, protective

Environmental and Social Impact Assessment (ESIA) 184

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision clothing, gloves, and eye protection. - 14) Community A. At-site common risks - Road traffic law Contractor PMU, health and safety - The subproject must implement risk management No. 23/2008/QH12 Construction strategies to protect the community from physical, - Circular No. Supervision chemical, or other hazards associated with construction 22/2010/TT-BXD Consultant sites. on labor safety in (CSC) and - Limit access to the construction site through a construction Supervision combination of internal controls and administrative - QCVN 18: Board of Local measures. For structures or areas of high risk, it is 2014/BXD: Community depended on the specific situations to establish fence, Technical sign board, and propaganda of risks to local regulations on communities. safety in - Eliminate hazards on construction sites that can not be construction effectively controlled by restricting access to the site, - WBG EHS such as covering open areas to small spaces which are Guidelines covered, ensure exists for more opening areas such as excavation ditch around the hazard materials. B. Disease prevention Transmission disease - Need to supervise and screen and treatment for workers - Prevent diseases for workers in the local community by: • Introduce health and education awareness initiatives, for example by implementing an information strategy to reinforce individual awareness in order to address systemic factors that may affect individual behavior as well as promoting the protection of individuals and protecting others from infection by encouraging the use of condoms. • Train health staffs on treatment. • Implement vaccination programs for local community workers to improve health and prevent infection. • Provide medical services

Environmental and Social Impact Assessment (ESIA) 185

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision • Provide treatment through management of typical case at on-site or community-based health facilities. Ensure access to appropriate medical treatment, especially for migrant workers. • Promote cooperation with local authorities to increase access of families of workers and the community to public health services and promote vaccination. Disease spreading by vector disease - Prevent the spreading of larvae and pathogens through hygienic measures and removal of habitats and the reproduction of larva in the residential area - Remove unused stagnant water. - Increase flow in natural and artificial canals - Consider the application of surrounding of pesticide residues areas - Implement vector control programs. - Promote the use of medicine, clothing, nets, and other preventive measures to prevent insect bites. - Preventive treatment with non-immune drugs and in collaboration with health staff to destroy disease containing areas - Monitoring and treatment of endemic and migratory populations to prevent the spread of the disease. - Cooperate and exchange equipment and machine with other control programs in the subproject area to maximize benefits. - Training sub-project staffs and local people on risk, prevention, and treatment. - Monitor communities in high risk seasons for the detection and treatment of cases. - Distribute appropriate educational materials. - Comply with the safety instructions for storing,

Environmental and Social Impact Assessment (ESIA) 186

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision transporting and using pesticides to minimize the potentiality for abuse and exposure of people due to accidents. - 15) Stockpile and - Large mines or storage area will need specific measures Contractor PMU, borrow pits to be beyond the scope of mitigation measures in the Construction management ECOP. Supervision - All used positions must be determined in advance in the Consultant approved construction engineering requirements. (CSC) and - An open ditch will be built around the storage area to Supervision block wastewater. Board of Local - For a mine that is open for the first time, it is necessary Community to reserve the topsoil layer so that it will be re-used to restore the opened mine to its original natural condition. - The use of new areas for the storage, gathering or exploitation of materials required for the construction process must be pre-approved by the construction engineer. - When landowners are affected by the use of their land area for storing and gathering material or material exploitation, these owners must be included in the resettlement plan of the project. - If access is required, it must be considered in the environmental assessment. 16) Communication - Maintain communication with local authorities and - Decree No. Contractor PMU, with the local communities; the contractor should cooperate with local 167/2013/ND-CP Construction community authorities (communal chairperson and village heads) on on sanctioning Supervision the construction plan agreed in the area near the sensitive administrative Consultant area or in the sensitive time such as religious festival). violations in the (CSC) and - Make a copy in Vietnamese on the ECOP and related field of security, Supervision environmental safeguard documents to local agencies social order and Board of Local and workers. safety Community - Entertainment Park and parking area are affected: The loss of public infrastructure during construction is an

Environmental and Social Impact Assessment (ESIA) 187

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision inconvenience to people in sensitive areas. However, the consultation with the affected people will create opportunities for research and implementation of alternative measures. - Disseminate subproject information to affected parties (e.g. local government, enterprises and affected households, etc.) at community meetings prior to construction. - Provide contact information of the public relations unit so interested parties can gather information on site activities, status and results of the subproject implementation. - Provide all information, especially technical data, in a way that is understandable to the public and useful to the interested parties as well as the authorities through tables, newsletters, when there are results during the implementation phase. - Manage the involvement to community and information requirements for subproject implementation. - Respond promptly and accurately to requirements by phone and official letter. - Inform the local people about construction plans, service disruptions, and bus routes in case of explosion or destruction. - Limit work in the evening. If needed, it has to ensure that the work is well prepared and that everyone is adequately informed to take the necessary measures. - A notice must be given at least 15 days in advance of interruption of services (including electricity, water, telephone, bus, etc.) to the public by posting a notice at the sub-project site, bus and at affected businesses / households. - Provide documentation and technical drawings to local

Environmental and Social Impact Assessment (ESIA) 188

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental and Regulations of Responsibility Mitigation measures social issues Vietnam Implementation Supervision authorities and residents, particularly the construction site and the ESMP of the work site. - Bulletin boards should be located at all construction sites to provide project information as well as contact information of the project management, environmental staff, safety and health staff, telephone numbers and Other contact information so that affected individuals can present their concerns as well as make recommendations. ❖ Specific mitigation measures 466. Specific mitigation measures for impacts in specific sites during the construction process are described below: Table 71. Impact mitigation measures for each specific site

Responsibility No. Specific impacts of the subproject Description of impact Mitigation measures Implementation Monitoring I Phuc Tho Farm reservoir

- Construction activities - Arrangement of Construction PMU, disrupt the traffic of temporary road for local Contractor Construction the households. community at the time Supervision - Transportation of of dam construction; Consultant

materials can cause - Arrangement of warning (CSC), local traffic jams, traffic signs and instruction to community accidents due to very guide the community 1 small roads. through the process of - Camp areas in remote construction areas, workers are - To use means of vulnerable to insect transport to be suitable attack; for the road loading The dam surface is the inter-village road - Working near (under 5 tons); reservoirs, workers are - To use means of at risk of drowning. transport of a

Environmental and Social Impact Assessment (ESIA) 189

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Responsibility No. Specific impacts of the subproject Description of impact Mitigation measures Implementation Monitoring appropriate size to the traffic width; - To fully cover transport vehicles - Well implement worker management measures - Traffic sign board should be installed when passing through this area - To arrange workers camps in high areas, workers' houses should be designed in the style The management road as well as the material of stilts, with canvas transport road (wall) covering the surrounding house; - Employees are prohibited from bathing in the reservoir if they do not know how to swim II Da Sa reservoir

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Responsibility No. Specific impacts of the subproject Description of impact Mitigation measures Implementation Monitoring

- It needs to replace all - The contractor needs to Construction PMU, electrical system out conduct prior contractor Construction of the construction consultations and make Supervision site in the a backup plan with local Consultant construction period, authorities on the (CSC), resulting in a consequences of Independent temporary outage. electricity outage. Environmental

- Conflicts with the - Collaborate with Monitoring people who use Electricity agency of Consultant electricity from the Lam Ha district to have 1 (IEMC), local grid running through an appropriate community the dam area. construction schedule. - The camp area is in - Give information to AHs the remote area and about working schedule The power grid runs along the dam body workers are and the plan of vulnerable to insect electricity outage (at attack; least 5 days in advance). - Working near the reservoir, workers are at risk of drowning. - Currently the - Consult with directly Construction PMU, reservoir surface is AHs, disclose contractor Construction being rented by information right in the Supervision people for preparation phase of the Consultant aquaculture. The investment project; (CSC),

construction process - Work with the Independent 2 will stop the management unit of the Environmental aquaculture activities reservoir, inform 1 Monitoring of households. month in advance and Consultant

- The camp area is in require the people to (IEMC), local the remote area and early harvest their crops; community workers are - Support for the people to vulnerable to insect change livelihood, Environmental and Social Impact Assessment (ESIA) 191

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Responsibility No. Specific impacts of the subproject Description of impact Mitigation measures Implementation Monitoring Livelihood of the people attack. participate in - Working near the construction work of the reservoir, workers are subproject; at risk of drowning. - Reinstate the contract of renting the water surface for the people after completed construction if these HHs still need it. - Arrange camps in high areas, the worker camps should be designed in the style of stilt houses with surrounding canvas (walls). - It is strictly forbidden for workers to have a bath in reservoirs or give priority to mobilizing workers who can swim. III R’lom reservoir

Environmental and Social Impact Assessment (ESIA) 192

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Responsibility No. Specific impacts of the subproject Description of impact Mitigation measures Implementation Monitoring

- Construction - Arrangement of Construction PMU, activities disrupt the temporary road for local contractor Construction traffic of the community at the time Supervision households and the of dam construction; Consultant

transport for - Arrangement of warning (CSC), agriculture and signs and instruction to Independent forestry of the people. guide the community Environmental

- On rainy days the through the process of Monitoring management route is construction Consultant

very muddy which - To use means of (IEMC), local causes difficulty in transport to be suitable community travelling. for the road loading - The material transport (under 5 tons); road is the road to the - To use means of The dam surface is the inter-village road production area of the transport of a 1 people. appropriate size to the traffic width; - To fully cover transport vehicles - Well implement worker management measures - Traffic sign board should be installed when passing through this area - To arrange workers camps in high areas, workers' houses should be designed in the style of stilts, with canvas (wall) covering the surrounding house; IV Suoi Dia - Cay Xoai inter-reservoir

Environmental and Social Impact Assessment (ESIA) 193

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Responsibility No. Specific impacts of the subproject Description of impact Mitigation measures Implementation Monitoring

- Activities of - Arrangement of Construction PMU, constructing the temporary road for local contractor Construction operation road will community at the time Supervision affect travel of the of dam construction; Consultant

people, interrupt - Arrangement of warning (CSC), transportation for signs and instruction to Independent agriculture, forestry of guide the community Environmental the people, and through the process of Monitoring especially affect Da Lat construction Consultant

Milk Company. - To use means of (IEMC), local

- The camp area is transport to be suitable community in the remote area and for the road loading workers are vulnerable (under 5 tons); Suoi Dia reservoir to insect attack. - To use means of - Working near the transport of a The dam surface is the road to Da Lat Milk reservoir, workers are at appropriate size to the company 1 risk of drowning. traffic width;

- To fully cover transport vehicles; - Well implement worker management measures; - Traffic sign board should be installed when passing through this area; - To arrange workers camps in high areas, workers' houses should be designed in the style of stilts, with canvas (wall) covering the surrounding house.

Environmental and Social Impact Assessment (ESIA) 194

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Responsibility No. Specific impacts of the subproject Description of impact Mitigation measures Implementation Monitoring

- The construction - Consult with directly Compensation PMU process needs to remove AHs, disclose and Independent this stable, influencing information right in the Resettlement Environmental livelihood of this preparation phase of the Council Monitoring household. investment project; Consultant

- Compensate and support (IEMC), local the people as policies of community 2 the project; - Support the people to change livelihood, participate in construction work of the Suoi Dia reservoir subproject. A cow stable right near the dam foot

- It needs to replace all - The contractor needs to Construction PMU, electrical system out of conduct prior contractor Construction the construction site in consultations and make Supervision the construction a backup plan with local Consultant period, resulting in a authorities on the (CSC), temporary outage. consequences of Independent

- Conflicts with the electricity outage. Environmental

people who use - Collaborate with Monitoring electricity from the Electricity agency of 3 Consultant grid running through Don Duong district to (IEMC), local the dam area. have an appropriate community - The camp area is in the construction schedule. Suoi Dia reservoir remote area and - Give information to AHs workers are vulnerable about working schedule Power lines run along the dam body to insect attack; and the plan of - Working near the electricity outage (at reservoir, workers are least 5 days in advance). at risk of drowning

Environmental and Social Impact Assessment (ESIA) 195

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Responsibility No. Specific impacts of the subproject Description of impact Mitigation measures Implementation Monitoring

- The camp area is in the construction Consultant

remote area and workers - To use means of (IEMC), local Cay Xoai reservoir are vulnerable to insect transport to be suitable community attack. for the road loading The dam surface os the inter-village road - Working near the (under 5 tons); with many vehicles trvelling. reservoir, workers are at - To use means of risk of drowning. transport of a appropriate size to the 4 traffic width; - To fully cover transport vehicles; - Well implement worker management measures; - Traffic sign board should be installed when passing through this area; - The contractor needs to conduct prior consultations and make a backup plan with local authorities on the consequences of electricity outage. - Collaborate with Environmental and Social Impact Assessment (ESIA) 196

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Responsibility No. Specific impacts of the subproject Description of impact Mitigation measures Implementation Monitoring Electricity agency of Don Duong district to have an appropriate construction schedule. - Give information to AHs about working schedule and the plan of electricity outage (at least 5 days in advance). V Thanh Bach reservoir

- Activities of - Arrangement of constructing the temporary road for local operation road will community at the time affect travel of the of dam construction; people, interrupt - Arrangement of warning transportation for signs and instruction to agriculture, forestry of guide the community the people. through the process of - On rainy days, the construction management route is - To use means of very muddy that transport to be suitable 1 The material transportation road is the access causes difficulty in for the road loading road to the production area of the people. travelling. (under 5 tons); - The route of - To use means of transporting materials transport of a is also the road to the appropriate size to the production area of the traffic width; people. - To fully cover transport - The camp area is in the vehicles; remote area and - Well implement worker workers are vulnerable management measures; to insect attack. Traffic sign board should Environmental and Social Impact Assessment (ESIA) 197

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Responsibility No. Specific impacts of the subproject Description of impact Mitigation measures Implementation Monitoring - Working near the be installed when passing reservoir, workers are through this area. at risk of drowning. VI Reservoir No.4 - Activities of - Arrangement of Construction PMU, constructing the temporary road for local contractor Construction operation road will community at the time Supervision affect travel of the of dam construction; Consultant

- The camp area is in the construction Consultant

remote area and - To use means of (IEMC), local

workers are vulnerable transport to be suitable community The dam surface is the road to the production to insect attack. for the road loading 1 of the people. - Working near the (under 5 tons); reservoir, workers are - To use means of at risk of drowning. transport of a appropriate size to the traffic width; - To fully cover transport vehicles; - Well implement worker management measures; - Traffic sign board should be installed when passing through this area; VII Loc Thang reservoir

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Responsibility No. Specific impacts of the subproject Description of impact Mitigation measures Implementation Monitoring

- Currently, the - Consult with directly Compensation PMU, reservoir surface is AHs, disclose Support Independent being rented by people information right in the Resettlement Environmental for raising fishes. The preparation phase of the Council Monitoring construction process investment project; Consultant will affect this activity - Work with the (IEMC), local of the household. management unit of the community

- The camp area is in the reservoir, inform 1 1 remote area and month in advance and workers are vulnerable require the people to to insect attack. early harvest their crops; - Working near the - Support for the people to A fish pond of HHs in the dam downstream. reservoir, workers are change livelihood, at risk of drowning. participate in construction work of the subproject; VIII Da Bo B reservoir

- The scope of the - Comply with plans, Construction PMU, project is close to Cat designs that were contractor Construction Tien National Park, approved and agreed Supervision workers can participate about scope of Consultant in illegal bird and implementing project (CSC), animal catching, construction activities. Independent

indiscriminate tree - Burial, dumping of Environmental 1 cutting. grease, hazardous waste, Monitoring

- The camp area is in the waste rock and soil are Consultant remote area and strictly prohibited in the (IEMC), local workers are vulnerable project area and community The reservoir is close to Cat Tien National to insect attack. surrounding areas. Park - Working near the - Activities of cutting reservoir, workers are trees and hunting birds at risk of drowning. are strictly prohibited

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Responsibility No. Specific impacts of the subproject Description of impact Mitigation measures Implementation Monitoring - The road to the dam around the project area. runs through Ma - Activities of ethnic minority indiscriminate discharge, village, this may cause waste disposal of conflicts about workers in the customs and traditions. construction site. - Collaborate with local authorities in management of on-site workers and prevent from damaging assets, crops and livestock of local people in any form.

7.2.3. Mitigation measures during operation stage 467. After completion of the construction works, the reservoir will be ensured capacity in accordance with the design and ensured irrigation planning for downstream agricultural cultivation. Solutions related to the safety and operation of the reservoir are discussed further in the report "Dam safety" of the same sub-project. Table 72. Mitigation measures during the operation stage Responsibility for Impact Mitigation measures Supervision implementation Risk of drowning - Equip and install warning system in the dam and reservoir area Reservoir Department of - Disseminate the risk of drowning to communities along the reservoir management unit Agricultural and Rural Development/ Community and Local Authority - Inform people in downstream of annual repair and maintenance plan. Reservoir Department of management unit Agricultural and - Perform periodic maintenance and repairs in the short time and at the Repair and maintenance Rural Development/ time of low water demand. Community and - Implement measures to maintain water supply during repair process to Local Authority

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Responsibility for Impact Mitigation measures Supervision implementation ensure that there is no disruption in water supply.

- Prepare an emergency response plan as part of the dam safety report. Reservoir Department of management unit Agricultural and - The management and operation unit should promptly and accurately Rural Development/ announce on the flood discharge plan so that the community can take Community and Regulate reservoirs, initiative in catching and responding. Local Authority discharge flood in case of - At the time of high risk of safety such as rainy season, it needs to be large flood affecting assigned persons to monitor to ensure regulating of water resource in downstream suitable manner - Construct safety corridor for flood discharge on the basis of impact forecasting scenarios; Specific solutions are detailed in the Dam Safety Report and Emergency Response Plan. Disaster risk causing - The reservoir management and operation unit regularly to periodically Reservoir Department of insecurity check the reservoir safety management unit Agricultural and Rural Development/ - Properly implement the operating procedures to ensure the safety of the Community and reservoir Local Authority - The reservoir management and operation unit works closely with the Commune People's Committee and the local people to promptly report on the risks associated with dam safety in order to take timely corrective measures. - People and local authorities take initiative in community-based disaster response plan - Construct a safety corridor for flood discharge when necessary based on scenarios of forecasting the extent of effect due to dam breaking Implementation of the - Assist Plant Protection Stations in Lam Dong province in strengthening DARD, Sub- DARD, PCs of integrated pest control department of districts and pest and pesticide management plan plantation and plant communes - Strengthen environmental protection, food safety and hygiene protection, - Improve understanding for farmers in the subproject area. Agricultural Extension Center

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

7.3. Implementation arrangement 7.3.1. Project management Central level 468. The Ministry of Agriculture and Rural Development (MARD) is responsible for the implementation and management of the entire project. Provinces will be responsible for carrying out repair and upgrade of the dams under Component 1 and MARD will coordinate activities with the Ministry of Industry and Trade and MONRE under Component 2. The Central Project Management Board (CPMU) under MARD is overall responsible for coordinating and supervising the project. The implementation of repairing and preparing dam safety plan, including protection and commissioning, is focused on the provincial government. Provincial People's Committee and Department of Agriculture and Rural Development (DARD) is the leading agencies at provincial level. The Provincial Project Management Unit (PPMU) is responsible for managing and supervising the works with support from the CPMU. 469. The project management unit at central level will assist in the implementation of the projects by the environmental and social technical support unit; In addition, an independent consultant unit is hired by CPMU to evaluate the implementation of environmental safeguard policy of the entire project every 6 months. This is the organization selected through the competitive process to provide support and quality assurance to the central level in the implementation process. This includes support to project management unit at the central level in reviewing and adjusting when needed and re-implementing the development framework during the project implementation to provide a general framework for national programs. This process will be considered in accordance with the context of Decree 72 to assist MARD in establishing the necessary systems for the implementation of the National Dam Safety Program. Provincial level 470. The People's Committee of Lam Dong province assigns the Department of Agriculture and Rural Development (MARD) to carry out the project in the area, establish the WB8 Provincial Project Management Unit (PPMU) to carry out the bidding, supervise the construction, implement resettlement action plan, environmental and social action plan and these actions and plans must be in line with the overall framework of the overall project. The PPMU will be supported by technical and environmental consultants from the CPMU. Project implementation organizations are presented in the following diagram. Figure 34: Structure of environmental management and supervision organization

Source: Environmental and Social Management Framework of DRSIP project, 2015

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 7.3.2. Roles and responsibilities for environmental and social safeguard management 471. Regarding regular investment monitoring activities, the CPMU together with local environmental authority will determine whether the implementation of the project meet all the requirements in the environmental and social management framework, socio-environmental impact assessment report and environmental management plan. This agency will conduct field survey at different stages of the project to confirm that the social and environmental management plan and the environmental and social monitoring plan are being fully implemented. A monitoring report including environmental and social management issues will be included in the overall field report. The assigned environmental and social specialists are responsible for preparing quarterly and annual reports on major project implementation steps, outputs and results of environmental management actions implemented for all investments throughout the project cycle. 472. The CPO requires the PPMU to have a corresponding environmental component in its investment, including significant mitigation activities, and to mention significant environmental incidents that have occurred. All PPMUs must include the environmental component in all reports prepared submitted to the World Bank. 473. Stakeholders should be fully aware of the mechanism for implementing ESIA in project investments. This will be very important in supporting and evaluating their role in environmental monitoring and evaluation of the subproject activities. Organizational chart during ESIA implementation is presented in the following Figure Figure 35: Organization chat of Environmental safeguard policy of the subproject

Note: ESS - Environmental and Social Safeguard 474. Roles, implementation responsibility and monitoring of ESMP implementation by stakeholders are shown in the following table. Table 73. Roles and responsibilities of stakeholders

Community / Organization Responsibility - CPMU, on behalf of MARD, takes the responsibility for overall management, including compliance with policies of social and Central Project Management environmental safeguards of the project; Unit (CPMU) - Be responsible for reporting about implementation of environmental protection policies of the project to MARD and WB; Environmental and Social Impact Assessment (ESIA) 203

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Community / Organization Responsibility - CPMU will have a support in implementation of overall project by a technical support official. The technical support official will develop a system of logicaly monitoring for contents relevant to safeguards and society during the project implementation. - The 3rd party of independent monitoring will perform independent evaluation of the project activities. This party will also assess the compliance with policies and the implementation of safeguard tools including Environmental Management Plan/Practical Environmental Principles, Resettlement Policy Framwork/Resettlement Action Plan, Ethnic Minority Development Plan and Gender Action Plan. - The PPMU will be responsible for monitoring the overall implementation of the subproject, including environmental compliance of the subproject. The PMU will be responsible for the final implementation of the EIA and the environmental performance of the subproject during the construction and operation phases. - Specifically, PMU will: (i) coordinate closely with the local Provincial Project authorities in the participation of the community in the process Management Unit (PPMU) of preparing and implementing subproject; (ii) monitor the implementation of the environmental protection plan, including mainstreaming of environmental management plan into detailed technical design, bidding documents and contract; (iii) ensuring that an environmental management system is established and operated properly; (iv) be responsible for reporting on the implementation of ESIA to CPO, Department of Environmental and Natural Resource and the World Bank. - Socio-environmental officer is responsible for monitoring implementation of World Bank's social and environmental safeguard policies in all phases and progress of subproject. Specifically, Socio-environmental officer will be responsible for: (i) helping PMU incorporate environmental protection plan into detailed technical designs and civil engineering tenders and contract documents; (ii) helping PMU integrate its monitoring Environmental and social responsibilities and monitoring of environmental protection plan staff of the PMU (ES) into TORs, tenders and contract documents to construction supervision consultant when necessary; (iii) providing relevant inputs for consultancy selection process; (iv) reviewing reports submitted by monitoring consultant and safety consultants; (v) conducting periodic site inspections; (vi) helping PMU solve social and resettlement issues of sub-project; and (vii) preparation of environmental and social action on progress and evaluation of reports submitted to DONRE and World Bank. - Construction supervision consultant will appoint socio- environmental staff in charge of regular monitoring and Construction supervision supervision of all construction activities and ensure that the consultant (CSC) Contractor is in compliance with contractual requirements and ECOP. Construction supervision consultant will recruit enough qualified employees (e.g., environmental engineers) with

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Community / Organization Responsibility comprehensive knowledge of environmental management and project construction to carry out mandatory tasks and supervise performance of Contractors. - Construction supervision consultants will also assist PMUs in (i) reporting and maintaining close coordination with local communities, and (ii) strengthening capacity of civil contractors. Bidders will submit to PMU the following additional documents to bidding document: Code of Conduct (ESHS) - The contractor will submit a Code of Conduct which shall be applied to employees and subcontractors to ensure compliance with contractual environmental, social, health and safety obligations (ESHS). - In addition, the Contractor will detail how this Code of Conduct will be implemented. This will include: how it will be incorporated into the terms of employment/participation, training to be provided, how it will be monitored and what the Contractor proposes to deal with any violation. Management Strategies and Implementation Plans (MSIP) for Bidding unit Risk Management (ESHS) - The Contractor shall submit Management Strategies and Implementation Plans (MSIPs) to manage the following Environmental, Social, Health and Safety (ESHS) risks. + Traffic management plan to ensure safety of local communities from construction traffic; + Water protection plan to prevent water pollution of drinking water; + Strategy for boundary marking and protection for mobilization and construction to prevent adverse peripheral effects; + Strategy to obtain consent / permit before commencement of relevant work such as opening a quarry or a borrow pit. - The contractor will assign environmental and social staff to implement proposed environmental and social mitigation measures in the environmental and social protection plan (ESPP). Contractor - The Contractor shall submit to PMU/construction supervision consultant for approval, and then implementation; the Contractor's Environmental and Social Management Plan (C- ESMP5), in accordance with Specific Conditions of the Terms

5 The Contractor will not commence any works, including mobilization and/or pre -construction activities (e.g. site clearance, limitation of traffic roads, public roads and construction sites, geophysical surveys or surveys to select ancillary features such as quarries and coal mines), unless the PMU is satisfied with measures taken to address risks and impacts of environment, societ y, health and safety. At a minimum, the Contractor will apply its Management Strategies and Implementation Plan and Code of Conduct, which were submitted as part of the bidding document and approved as part of the Contract. The Contractor must submit, on an ongoing basis, for prior approval by the Subproject Director, of Additional Management Strategies and Additional Implementation Plan as necessary to manage ESHS risks and impacts for ongoing works. These management strategies and implementation plans cover the entire Contractor's Social and E nvironmental Management Plan (C-ESMP). C-ESMP will be approved before commencement of construction activities (e.g. excavation, earthworks, bridges and structures, flows and route s, material extraction or exploitation, mixing concrete and asphalt production). Approved C-ESMP will be reviewed, periodically (but not less than every six months), and updated promptly, as required, by the Contractor to ensure that it takes appropriate measures to to-be activities. The updated C-ESMP will need to be approved in advance by the subproject Director. Environmental and Social Impact Assessment (ESIA) 205

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Community / Organization Responsibility of Contract 16.2, including agreed management strategies and implementation plans. - The contractor is required to designate an competent and experience individual to be the official of Safety and Environment on the site (SEO) who will be responsible for supervising compliance with the Codes of Conduct and management strategies and implementation plans (MSIP) to manage risks (ESHS). - Perform actions to mitigate and minimize all potential negative impacts in suitability with the objectives described in Contractors’ ESMP. - Communicate actively with local people and take actions to avoid disturbance during construction. - Ensure that all employees and workers understand their procedures and tasks in the environmental management program. - Report to PMU and monitoring about their difficulties and solutions. - Report to local authorities and PMU and Monitoring Consultant if environmental incidents occur and coordinate with agencies and other stakeholders to address these issues. The local community supervision board was set up under the Prime Minister's Decision No. 80/2005/QD-CP of April 18, 2005, on the Regulation on investment supervision of the community". Commune-level community supervision boards have the right and responsibility to supervise construction activities and negative Local community impacts on the environment caused by construction activities, ensuring measures to minimize potential negative impacts implemented effectively by the contractor. In case of occurring environmental issues affecting the community, they will inform the field supervision consultant (CSC) and/or PPMU. Supervise implementation of environmental protection for the Provincial People's subproject components, ensuring compliance with Government Committee, District People's policies and regulations. DONRE and Divisions of Natural Committee, Provincial Resources and Environment supervise compliance with the DONRE Government's environmental requirements. 7.4. Environment compliance framework 475. The tasks of contractors, environmental safety staff and monitoring consultants stated here but not defined in SPDs should be included in requirements of the Investor (Part VII of SPDs). 7.4.1. Contractor6's environmental tasks

6 If the contractor has not fulfiled any ESHS obligations or worked under a Contract, the value of this work or obligation as determined by the Project Manager may be withheld until the job or obligation is performed and/ or costs of repair or replacement, as determined by the Project Manager, may be withheld until repair or replacement is completed. “Not fulfiled” means, but is not limited to: • Failure to comply with any ESHS obligations or tasks described in the Building Requirement, including: working outside the site boundary, excessive dust, failing to keep public roads in safe condition, damaging vegetation, water or sediment pollution, soil contamination eg from oil, human waste, archaeological damage or cultural her itage features, air pollution due to unauthorized and/or ineffective combustion; • Not regularly reviewing C-ESMP and/or updating it in a timely manner to address emerging ESHS issues, or anticipating risks or impacts; • Not implementing C-ESMP; Environmental and Social Impact Assessment (ESIA) 206

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 476. The contractor firstly must comply to minimize impacts that may result from subproject construction and secondly apply ESMP mitigation measures to prevent losses and inconvenience to local community and environment caused by impacts during construction and operation phase. 477. Remedial measures that cannot be effectively implemented during construction shall be conducted upon completion of the work (and before acceptance of work completion). 478. Tasks of the contractor include, but not limited to: - Compliance with related legal requirements on environment, public health and safety; - Working within required scope of contract and other tender conditions; - Arrange representatives of construction team to join site inspection conducted by environmental officers of PPMU and CSC; - Collaborate with agencies of implementing environmental monitoring periodically as contents in ESIA; - Collaborate with PPMU to undertake training, propaganda of safeguard policies on environment and society for officials and employees on the site; - Carry out any remedy instructed by the environmental officer from PMU and CSC; - In case of non-compliance/inconsistency, investigation must be carried out to propose mitigation measures and remedies shall be conducted to minimize environmental impact; - Stop construction activities that generate negative impacts upon receiving instruction of environmental staff of project management unit and monitoring consultant; propose and implement remedies and conduct alternative construction methods, if needed, to minimize environmental impact. Non-compliance by contractor will result in suspension of construction and other penalties until non-compliance is properly addressed following requirements of ES of PMU and CSC; - In case of non-compliance or falsification, an investigation must be conducted and mitigation measures will be submitted and implemented to minimize the impact on the environment; - Stop construction activities cause disturbances when receiving an instruction from the Environmental Safety Officer of PPMU and CSC. Propose and implement remedial actions and apply alternative construction methods, in order to minimize the environmental impact. If the contractor does not comply with the above requirements, it will be suspended work or receive penalties until the problem is resolved and having an acceptance from the ES of PPMU and CSC. 7.4.2. Contractor’s safety, social and environmental officer (SEO) 479. The contractor shall be required to designate eligible staff (s) to act as safety, socio - environmental officer. Safety, social and environmental officer must be properly trained in environmental management and must possess necessary skills to transfer environmental management knowledge to all contract employees. Safety, social and environmental officer will be responsible for monitoring contractor’s compliance with ESMP requirements and environmental specifications. The task of safety, social and environmental officer will include but not limit to the followings: - Conduct environmental site inspections to assess and audit practices, equipment and working methods of contractors on pollution control and environmental mitigation measures implemented;

• No appropriate approval/license prior to conducting the work or related activities; • Do not submit an ESHS report (as described in Appendix C of the SPD), or do not timely submit a report. Environmental and Social Impact Assessment (ESIA) 207

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province - Monitoring compliance with environmental protection measures, pollution prevention and control measures and contract requirements; - Monitoring the implementation of environmental mitigation measures; - Preparation of audit reports for environmental conditions of the site; - Investigate complaints and propose corrective measures; - Advise contractors on measures to prevent environmental pollution; raise awareness and remain proactive; - Propose appropriate mitigation measures for contractors in case of non-compliance. Implement additional monitoring of non-compliance guided by ES of PMU and CSC; - Inform contractors and ESs (to PMU and monitoring consultant) about environmental issues; submit ESMP Implementation Plan of Contractor to ES of PMU and monitoring consultant and relevant agencies, if requested; - Store detailed documents of activities relevant to the environment on the website. 7.4.3. Social and environmental monitoring during construction phase (CSC) 480. During the construction phase, CSC eligibly reports to PMU for environmental monitoring. CSC will assign environmental and social staff in charge of monitoring and supervising all construction activities to ensure that the mitigation measures applied in the ESMP are properly implemented and help to minimize negative environmental impact caused by subproject. CSC will provide sufficient environmental monitoring engineers with comprehensive knowledge of environmental protection and construction project management to perform mandatory tasks and monitor performance of contractors. Specifically, environmental and social officer of CSC will - On behalf of PMU to review and evaluate whether the design meets the requirements of the ESMP mitigation and management measures; - Supervise contractors' environmental management systems, including performance, experience and environmental issues troubleshooting, and provide guidance on remedial measures; - Review implementation of ESMP by contractors; verify and confirm environmental monitoring procedures, parameters, monitoring location, equipment and results; - Report status of ESMP implementation to PMU and prepare environmental monitoring report during construction phase; 7.4.4. Compliance with contract requirement and legal regulations 481. Construction activities not only comply with the requirements of environmental protection and contract pollution control but also comply with the Law on Environmental Protection and Pollution Control of the Socialist Republic of Vietnam. 482. All reports on modality method submitted to CSC and PMU by the Contractor for approval to see if there are sufficient environmental protection and pollution control measures. CSC and PMU will also review progress and program of the works to check that relevant environmental laws have not been violated and may prevent any possibility of violating the law. 483. The contractor will make copies of the documents related to SEO and SE of CSC and PMU. Document must include at least updated work progress report, updated working methods and other license/permit applications in accordance with the Environmental Protection Action and all valid permits/licenses. SEO and SE will also have access, on request, to the Site Log. 484. After reviewing documents, SEO or SE will advise PMU and contractor on non-compliance with contractual requirements and legal regulation on environmental protection and pollution control for their implementation of the next actions. If SEO or SE concludes that status on the

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province permit/ application of the permit and any prepared environmental protection and pollution control works may not comply with construction methods or may result in violation of requirements on environmental protection and pollution control, they will advise the contractor and PMU accordingly. 7.4.5. Reporting system 485. In addition to the progress report, the Contractor will also provide a report on environmental, social, health and safety indicators listed in Annex B of the SPDs. In addition to the Annex B report, the Contractor shall also promptly notify PMU of any incidents in the following categories. Full details of such incidents will be provided to PMU within agreed time frame. - Confirm or likely to violate any international law or agreement; - Fatality or serious injuries; - Significant adverse effects or damage to private property (e.g. car accident, damage caused by flying stones, working outside the territory) - Major pollution of living water or damage to or destruction of rare or endangered habitats (including protected areas) or species; - Any allegations of sexual harassment or sexual misconduct, child abuse, pollution or other violations involving children. Table 74. Requirements of reporting system No. Preparation of report Submit to Frequency of reporting Report weekly or monthly the implementation of ESMP on the environment, society, health and 1 Contractor CSC safety; Report immediately arisen environmental incidents or serious accidents; Monthly monitoring report on the ESMP Construction supervision implementation as required by PMU; 2 PPMU consultant (CSC) Report immediately arisen environmental incidents or serious accidents. When the community has any complaints about Community supervision 3 PPMU the implementation of safeguard policy on board environment and society under the subproject. Once Every six months according to monitoring Consultant in charge of frequency; environmental PPMU 4 Report immediately when there are incidents monitoring causing serious pollution. Once Every six months as stipulated by the Government. 5 PPMU DONRE Report in case of incident or additional requirements Once Every six months. Report immediately in case of incidents or 6 PPMU CPMU accidents causing serious pollution. Report as required on contents amended or necessary to clarify. 7.5. Grievance redress mechanism (GRM) 486. Complaints related to subproject issues will be addressed through negotiations to reach a Environmental and Social Impact Assessment (ESIA) 209

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province consensus. A complaint will go through three stages before it can be sent to the court. The executing agency will pay all administrative and legal fees related to the acceptance of the complaint. This cost is included in the subproject budget. The procedures for handling complaints shall be as follows: 7.5.1. Procedures for GRM 1st level, CPC/Ward PC 487. An affected household can send his/her complaint to any member of the ward/commune People's Committee, through the village head or directly to the commune/ward People's Committee, in writing or verbal. The above member (s) of the People's Committee or village head will inform the commune/ward People's Committee of the complaint. The commune/ward People's Committee will directly work with the affected household above and will decide to settle the complaint after five days from the date of receiving the complaint (it can take 15 days in mountainous or remote areas). The Secretariat of the People's Committee of the commune/ward is responsible for compiling and recording all complaints they are dealing with. 488. After the People's Committee of the ward/commune issues its decision, the relevant household can appeal within 30 days. In case the second decision is issued but the household above is still not satisfied with the decision, the household can appeal to the People's Committee of the city/district/town (City’s PC). 2nd level, DPC, Town PC and City’s PC 489. After receiving a complaint from a household, DPC will have 15 days (or 30 days in the case of remote areas) to resolve the case. The District People's Committee is responsible keeping records of all complaints that it handles. When the DPC makes a decision, the household can appeal within 30 days. In case the second decision has been issued and the household is still unhappy with the decision, they can appeal to the Provincial People's Committee. 3rd level, PPC 490. Upon receiving the complaint from the household, the PPC will have 30 days (or 45 days for remote areas) to resolve the case. The PPC is responsible for submitting and keeping documents for all submitted complaints 491. After the PPC issues the decision, the household can appeal within 45 days. In case the second decision is issued and the household is still unhappy with the decision, they can appeal to the court within 45 days. After that, PPC will have to send compensation to the account. 4th level, Provincial Court 492. In the event that a complainant sends his or her case to the provincial court and court rules are helpful for the complainant, the provincial government will have to increase the compensation level. In the case of a court judgment in favour of the PPC, the complainant will be returned the amount paid to the court. 493. Decision on redressing compliant will be sent to the complainant and the stakeholders and publicly posted in relevant PCs. The compliant will receive judgment three days after having complaint redressing result from ward/commune/town and seven days at district or provincial levels. 494. In order to minimize the number of complaints at the provincial level, the PMU will coordinate with District Compensation Committee to participate and advise on redressing the complaint and respond to the complainant. The role and capacity of PMU is to provide compensation, support and resettlement to affected households and displaced persons. 495. Human Resources: Staff in charge of environment and resettlement selected by the PMU will design and maintain a database of subproject-related complaints from affected households, including information such as: the nature of the complaint, the source and date of receipt of the Environmental and Social Impact Assessment (ESIA) 210

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province complaint, the name and address of the complainant, the action plan and the current status. 496. For verbal complaint, Receiving and Reconciling Board will record the complaint in a complaint form in the first meeting with affected person. 7.5.2. Contractor and CSC 497. During the construction process, the GRM will be also managed by contractors under the supervision of CSC. Contractors will inform affected communities and communes about the availability of GRM to handle complaints and concerns about the subproject. This will be done through community consultation and information disclosure process whereby contractors will contact affected communities and related agencies on a regular basis. Meetings will be held at least quarterly and monthly information brochures will be announced. The announcements will be made on local media to disseminate about coming activities. 498. Every complaint and corresponding action implemented by the contractor will be recorded in safeguard monitoring report of the subproject. Complaints and requirements on compensation will be submitted as follows: - By verbal: directly to CSC and/or safeguard officials or representative of contractor in the site office; - By writing: handing over or sending complaint letter to the designated address; - By phone, fax, and email: send to CSC, employee or safeguard representative of the contractor. 499. When receiving a complaint, CSC, staffs or safeguard representative of the contractor will register the complaint in the complaint file and maintain diary of the events related to the complaint until the complaint is resolved. Immediately upon receipt, four copies of the complaint will be prepared. The original copy will be kept on file, one copy will be used by the contractor's safeguard staff, one copy will be sent to the CSC and the fourth copy will be sent to the PMU within 24 hours from the time of receiving complaint letter. 500. Recorded information on the complaint includes: - Date and hour of complaint; - Name and address of the complainant; - Brief of complaint; - Actions taken to resolve the complaint, including person contacting and finding at each step in the complaint handling process; - Date and time when the complainant is allowed to contact to resolve; - Final decision on the complaint letter; - Date, time and method that the complainant is informed; - Signature of the complainant when his/her complaint is resolved. 501. Minor complaint will be processed within one week. Within two weeks (and every week thereafter), a written response will be sent to the complainant (by hand, post, fax, e-mail) indicating procedures which are conducted until now. 502. The main objective is to solve the problem as quickly as possible by the simplest means, involving as few people as possible, and at the lowest level as possible. Only if a problem cannot be resolved at the simplest level and/or within 15 days, other functional agencies will be involved. Such situations may arise, for example, when the amount paid cannot be resolved for the damage, or the cause of the damage is determined. 7.5.3. Grievance mechanism of the World Bank

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 503. When community and individual believe that they are adversely affected by a project funded by World Bank (WB), they can send their complaint to the grievance redressing mechanism at subproject level or services of redressing grievance of WB (GRS). GRS ensures that recorded complaint will be quickly considered to resolve issues related to the subproject. Subproject affected community and individual can send their complaint to external monitoring board of WB to determine if bad effect is happened or not. In order to know information on how to send complaint to the grievance redressing service of WB, please refer to: www.worldbank.org/grs. In order to know information on the way to send complaint letter to Inspection Board of WB, please refer to: www.inspectionpanel.org . 7.6. ESMP implementation plan 7.6.1. Contractor's ESMP Implementation Plan 504. Upon contract signing, based on the ESMP of approved subproject and construction method, the construction plan has been approved by monitoring consultant and the PMU, the Contractor shall prepare Contractor’s ESMP (C -ESMP) for the package and submit to monitoring consultant for review and approval. - After the C-ESMP has been approved by monitoring consultant, the contractor shall take measures to mitigate environmental and social impacts on site. - The C-ESMP will be published at worker camps and site offices to disseminate information on mitigation measures to workers. - Make public information board at the entrance of construction site with available addresses, representatives, phone numbers of the concerned parties for monitoring by local community and contact when needed. - Assign staff in charge of environment and safety, training and providing protective equipment, periodical health checks for workers; - Survey and check on-site environmental status, report to monitoring consultant if there are any significant differences compared to base environment. - Sign contracts with authorized units to treat domestic wastes, hazardous waste, and supply clean water. - Manage workers and construction equipment and provide new certificates/permits in case of expiration. - Implement ESMP and update, and submit to construction supervision consultant for approval if any changes before applying. - Coordinate with PMB and construction supervision consultant to redress complaints of local people on environmental and safety issue of the package in a timely manner. - Monthly report on ESMP implementation of the package. 7.6.2. Commencement of subproject and personnel 505. The contractor's staff in charge of environment protection must be an environmental engineer or one with related expertise and must have certificates of occupational safety and environmental sanitary and work full-time on site. 506. Provide monthly trainings on occupational safety, environmental sanitary and fire presentation & fighting and conduct regular health check for workers. 7.7. Training plan, and capacity building 7.7.1. Training on safeguard policy 507. The PPMU has appointed an officer to be responsible for implementing the environmental

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province safeguard policies of the subproject. This environmental officer has participated in safeguard training courses organized by the World Bank and the CPMU at the early stages of the project implementation. However, training and capacity development annually carried out through technical assistance activities of World Bank safeguard policy officer focuses on new safeguard policy requirements. Due to the new requirements of environment, society, health and safety included in bidding document in accordance with the standard, the required training on environment, society, health and safety will be provided by safeguard officer of WB to the environmental and social officials of PMU, construction supervision consultant, social and environmental officer of the contractor immediately when they are mobilized and the PPMU will be responsible for the organization of this training in cooperation with safeguard officer of WB. 508. Such training courses will be held at the early stages of the subproject implementation process to ensure that the ESMP is properly integrated into the bidding document (and subsequently the contract). Technical assistance should be provided by experienced and skillful staff of construction supervision consultants, and implemented in accordance with the terms of reference including specific references to the development of the requirements of the investor for the standard tender. 7.7.2. Occupational Safety and Health Training 509. Provisions will be made to provide occupational safety and health training for all new employees to ensure they are informed of the basic regulations in the site on personal protection and prevention of colleagues from injuries. 510. Training will include basic hazard perception, specific hazards, safe work practices, and emergency procedures for fire, evacuation and natural disasters in appropriate manner. Any used particular hazard or color code will be considered in a thoughtful way as a part of the orientation training. 7.7.3. Orientation of visitors 511. If visitors are allowed access to areas with hazardous conditions or substances, orientation and control program for visitors will be established to ensure that visitors do not go into dangerous areas without being accompanied. 7.7.4. Training for contractors and new workers 512. The PPMU will ensure that workers and contractors, before starting new work, will receive adequate training and information so that they can understand the hazards of work and protect themselves from the hazards. Training will include: 513. Understand about materials, equipment and tools - Understand about the hazards in operation and how to control them - Potential risks to health - Warnings to prevent exposure - Sanitary requirements - Wear and use clothing and protective equipment - Appropriate response to extreme operating conditions, accidents and incidents. 7.7.5. Training on basic occupational safety and health 514. A basic training program and intensive courses will be implemented as needed to ensure that workers are oriented towards the specific hazards of separated work tasks. Training will generally be provided to managers, supervisors, workers, and occasional visitors to risk and hazardous areas. 515. Workers in charge of first aid and rescue will receive special training not to intentionally exacerbate the exposure and health hazards to themselves and their colleagues. Training will

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province include the risk of transmitting the disease through blood through contact with tissue and body fluids. 516. Through appropriate contractual terms and monitoring, the PPMU will ensure that service providers as well as contractual labors and subcontractors are adequately trained before commencement of work. 517. The PPMU will be responsible for coordinating with construction supervision consultant and officer in charge of environment of contractor to organize training courses above. 7.8. Plan of monitoring compliance and monitoring of environmental quality 7.8.1. Supervision of compliance 518. Environmental compliance monitoring is carried out to assess the compliance with operational standards and proposed national environmental norm and standards. The main purpose of the Environmental Compliance Monitoring is to ensure that all proposed mitigation measures are complied with by contractors during the construction, to early identify arising environmental issues and to timely propose additional mitigation measures. - The PPMU and CSC will monitor the compliance with standards. PPMU and CSC will be responsible for monitoring the compliance of contractor with agreed mitigation measures. The results are summarized in a monthly report. - Local authorities in 7 communes within areas of 8 reservoirs will be responsible for monitoring in accordance with the Government regulations, the Law on Environmental Protection 2014 and Decree No.80/2005/ND-CP - Regulations on community investment supervision. - In addition, Officer of contractor in charge of environment will be responsible for day- to-day monitoring of labor safety and environmental sanitation and reporting to the CSC. - A detailed monitoring plan will be prepared during the detailed design phase. Cost for the monitoring program will be included in the cost of implementation of the ESMP. 7.8.2. Monitor the quality of the surrounding environment (a) Periodic monitoring 519. Environmental monitoring programs such as quality of air, soil and water will provide information which can be used to assess effectiveness of pollution management strategies. One legal qualified unit is hired by PPMU for environmental monitoring (the Unit will be signed a contract prior to construction). A systematic planning process is recommended to ensure that the collected data is appropriate for its intended purpose (and to avoid unnecessary data collection). This process, sometimes referred to as the process of data quality objectives, determinates purpose of data collection, decides basing on data and consequences of making wrong decisions; time and geographical boundaries and necessary data quality to make a right decision. Environmental monitoring program will consider the following factors: - Monitoring parameters: Selected monitoring parameters should reflect pollutants involved in subproject progress. - Base calculation: Prior to construction of subproject, quality monitoring of ambient and surrounding area of subproject should be conducted to assess level of contamination of main pollutants to distinguish between surrounding environmental conditions and impacts related to subproject. - Type and frequency of monitoring: Data on ambient air generated through monitoring program must represent pollutants discharged by subproject over time. Time and frequency of monitoring can also be arranged from continuously to rarely, monthly,

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province quarterly or yearly. - Monitoring locations: Quality monitoring of surrounding environment may include external supervision or at the boundary of sub-project by investor, DONRE, or by cooperation between two parties. The placement of monitoring stations should base on the results of scientific methods and mathematical models to project potential effects on receptors from emission sources taking into account aspects such as location of the community who is prone to impacts. - Sampling and analysis methods: Monitoring programs should apply national or international methods for sample collection and analysis, such as those published by the International Organization for Standardization (ISO). Sampling must be conducted by or under supervision of trained personnel. Analysis will be conducted by authorized or certified entities for this purpose. Quality control/QA/QC plans must apply sampling and analysis and must be proved by documentation to ensure data quality is consistent with intended use of the data (e.g., Limit of detection is lower than the level of concern). Monitoring reports should include QA/QC documentation. 520. Noise monitoring can be conducted for the purpose of setting level of ambient noise in the areas of proposed project, or checking noise level during operation phase. The noise monitoring program should be prepared and implemented by trained experts. Typical monitoring period should be sufficient for statistical analysis and may last 48 hours with the use of noise monitoring equipment which can record data continuously during the period, or in hours, or more frequently if appropriate (or include different intervals for several days, including weekdays and weekends). Negative indexes are recorded depending on the type of interference being tracked, determined by the noise specialist. The equipment should be placed about 1.5m from ground and not closer than 3m to any reflective surfaces (e.g. walls). In general, the noise limit is expressed by level of ambient noise or level of background noise in case there is no source of noise that is being investigated. 7.8.3. Frequency and monitoring parameters 521. The parameters, location and frequency of monitoring of environmental quality are summarized in the table below: Table 75. Summary of the content of quality monitoring of environmental components during the construction phase Environmental Frequency Monitoring Monitoring monitoring of Standard reference position parameters component monitoring Construction phase

Quality of air and 2 locations Once every SO2, NO2, CO, TSP, QCVN 05:2013/BTNMT noise at each six months PM10, PM2.5 and QCVN 26:2010/BTNMT construction micro elements of site climate (temperature, humidity, wind speed, wind direction), vibration and noise Quality of surface 2 locations Once every pH, DO, COD, QCVN 08- , water at each six months BOD5, TSS, NH4 MT:2015/BTNMT - - construction NO3 , NO2 , As, Pb, site Fe, Hg, Cd and Coliform

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Environmental Frequency Monitoring Monitoring monitoring of Standard reference position parameters component monitoring + Quality of 2 locations Once every pH, NH4 , Total QCVN 09-MT underground at each six months dissolved solids :2015/BTNMT - - water construction (TDS), NO3 , NO2 , site Pb, Fe, As, Hg, Cd, Coliform, E.coli Quality of soil 1 location at Once every Cd, Cu, Pb, Zn, As QCVN 03-MT environment each six months :2015/BTNMT construction site Operation phase

Quality of surface 2 locations Once every pH, DO, COD, BOD5, QCVN 08-MT + - - water for each 6 months in TSS, NH4 ,NO3 , NO2 , :2015/BTNMT construction the first As, Pb, Fe, Hg, Cd and work (1 in year of Coliform the reservoir operation bed; 1 in the reservoir downstream) Note: - QCVN 05: 2013/BTNMT - National Technical Standard on ambient air quality - QCVN 26: 2010/BTNMT: National Technical Standard on noise - QCVN 08-MT: 2015/BTNMT: National standard for surface water quality - QCVN 09-MT: 2015/BTNMT: National Technical Standard on Underground Water Quality - QCVN 03-MT: 2015/BTNMT: Limits of heavy metals in soil (b) Incident monitoring 522. Purpose of this monitoring is to assess the level of soil and water pollution caused by sudden discharge of waste such as the discharge of wastewater and oil into nearby water and soil and to timely make decision on pollution control and reduce environmental risk. 523. An incident monitoring plan will be developed by construction supervision consultant in the first stage of the subproject implementation and submitted to the PMU for approval. This plan will identify potential risks to environment due to discharge of wastes such as waste water and waste oil into nearby water sources. The plan also identifies resources to monitor this issue such as personnel, equipment, location and monitoring parameters, analytical methods, dedicated laboratories, and cost estimates. 7.8.4. Dam safety monitoring 524. After water is stored and the dam is started, the dam owner is responsible for dam safety monitoring. This task is implemented by a qualified independent expert who is not involved in the survey, design, construction or operation of the dam. After regular operation, regular checking of the dam, including pre-flood and post-flood safety inspections, are carried out in accordance with the Government Decree (No. 72/2007/ND-CP) on Dam Safety Management.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

7.9. Estimation of the cost of ESMP implementation 525. The cost of implementing the ESMP will include: i) the cost of implementation of mitigation measures on the site which primarily comes from contractor activities; ii) compliance monitoring cost, which will be included in the contract with the construction supervision consultant, cost for operation and management of the PMU; iii) costs for monitoring environmental quality; and iv) cost for training and capacity building. The total cost of implementing the ESMP is estimated in the following table. Table 76. Summary of the ESMP implementation cost

No. Work Items Total cost (VND) 1 Hiring independent monitoring consultants 196,350,000 2 Monitoring quality of environmental components 1,369,774,600 3 Training, building capacity 131,000,000 4 Works of environmental treatments 256,000,000 Total 1,953,124,600 526. This cost (not include VAT) is calculated as the price unit at current time and as the consultant’s experience. Due to the project able to last for several years, price change is inevitable. The project will need to prepare a suitable amount of contingency cost. 527. Community involvement in the ESIA implementation is voluntary due to the benefit of the community itself and the households. Therefore, the people involved in the monitoring of the ESMP will not be paid salary. However, in order to encourage community participation, the cost of materials and tools should be allocated to monitor activities and support some selected members that the community chooses to participate in the monitoring process. According to decision No. 80/2005/QD-TTg dated 18/4/2005 by Prime Minister on community investment monitoring regulation and Joint Circular guiding on the implementation of Decision No. 80/2005/QD-TTg, "costs for investment monitoring activity of the community in communes/ the ward is represented in the value of the cost estimates of the budget of the Fatherland Front at communal level and district level and are taken from the budget of commune and district levels; financial support for organizing training courses, guidance, preliminary report and finally the investment supervision of community at provincial and district level are balanced in the value of estimate cost of Fatherland Front at provincial/district level which is taken from provincial budget". 528. Table below shows the capital flow for environmental quality monitoring and capacity building during the subproject implementation process in Lam Dong province. Table 77. Fund source for monitoring of ESMP

Cost Capital source Contents (a) Implementation of mitigation measures A part of the construction contract World Bank during construction process (b) Implementation monitoring for A part of the cost of Construction World Bank safeguard policy during construction Supervision Consultant (CSC)

Cost for hiring environmental (d) Monitoring of environmental quality World Bank monitoring

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province

Table 78. Summary of mitigation measures Agency Agency being being Environmental and Cost for Phase Mitigation measures Location Applied standards responsible for responsible social issues mitigation implementation for monitoring Pre-construction phase Pollution of - After drilling for geological The entire QCVN 09-MT: Including in FS consultant PPMU underground water investigation, the unit of affected 2015 the cost for FS due to geological design survey will fill and seal area of the preparation investigation drilling the boreholes to mitigate the subproject impact of pollutants washed into the underground water, impacting its quality. Clearing of plant on - Only clear on defined area. Subproject Compensation Head of affected PPMU and temporarily and - Utilize plant waste to be fuel area and site household People's permanently or material clearance cost Committees acquired land - Collect unused plant waste and of districts transport to local landfill and - Restore the vegetation as soon communes as possible to maintain the landscape, microclimate condition, and habitat of local animals. Land acquisition: - Compensation, assistance and The whole Land Law No. VND People's PPMU and The implementation resettlement for people having affected 45/2013/QH13, 1,296,749,841 Committees of local of work items of the land, housing, income, subproject relevant decrees districts and communities subproject will property affected. area and circulars communes require permanent Compensation and site acquisition of 23683 clearance will be complied m2, including 7683 with the updated resettlement m2 of permanently plan of the subproject acquired land and

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Agency Agency being being Environmental and Cost for Phase Mitigation measures Location Applied standards responsible for responsible social issues mitigation implementation for monitoring 16,000 m2 of temporarily acquired land, 100% of irrigation land under management of the People's Committee. Affect 36 households. Risks from UXO Ensure safe distance and warnings The whole QCVN 01: Cost for Unit under PPMU for people during the affected 2012/BQP clearance of management of implementation in accordance subproject QCVN 02: UXO Military Zone II with QCVN01: 2012/BQP- area 2008/BCT National technical regulations on Circular clearance of boms, mines and 146/2007/TT-BQP explosive objects and QCVN 02: 2008/BCT- National regulations on safety in transporting, preserving, using and destroying industrial explosive materials Construction stage The general - Environmental Code of All affected Laws, decrees, Included in Contractor PPMUs, environmental and Practices (ECOP) subproject circulars and construction construction social negative - Measures to mitigate areas current national costs supervision impacts related to specific impacts including technical consultant, construction constructio regulations independent activities and n sites, A Guideline to the monitoring specific impacts transport Environment, consultant of routes, Health and Safety the Central borrow pits of the World Bank Project

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Agency Agency being being Environmental and Cost for Phase Mitigation measures Location Applied standards responsible for responsible social issues mitigation implementation for monitoring Management Unit, Provincial Department of Natural Resources and Environment, local communities, Operation stage Risk of drowning - Equip warning signs and Reservoir Official Letter No. Operating cost Dam owner Department installing dangerous warning area 5675/BGDDT- of the reservoir of system on dams and reservoirs. GDTC dated 30 Agricultural - Disseminate risk of drowning November 2017 and Rural to the community along the Development reservoir. Repair and - Inform people about the Reservoir Decree Operating cost Dam owner Department maintenance can annual repair and maintenance area and 114/2018/ND-CP of the reservoir of lead to lower plan downstream Agricultural downstream water - Perform periodic maintenance area and Rural level and repair in the short period Development and at the time of the lowest water demand - Implement measures to maintain water supply during the repair process to ensure that there is no disruption in water supply

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Agency Agency being being Environmental and Cost for Phase Mitigation measures Location Applied standards responsible for responsible social issues mitigation implementation for monitoring Regulating of - Prepare an emergency Reservoir Decree Operating cost Dam owner Department reservoir, flood response plan as part of the area and 114/2018/ND-CP of the reservoir of discharge in case of dam safety report downstream Agricultural big flood affecting - The management and area and Rural downstream operation unit should promptly Development communities and accurately announce the flood discharge plan so that the community can take initiative in grasping and responding to the plan. - By the time of insecurity such as the rainy season, people should be regularly monitored to ensure proper water regulation. - - Construct a safety corridor for flood discharging on the basis of forecasting impact level; Specific solutions are detailed in the Dam Safety Report and Emergency Response Plan. Disaster risk causes - The unit that manages the Reservoir Decree Operating cost Dam owner Department insecurity operation of the reservoirs area and 114/2018/ND-CP of the reservoir of regularly checks the safety of downstream Agricultural reservoir area and Rural - Properly perform operation Development procedures to ensure the safety of the reservoir

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Agency Agency being being Environmental and Cost for Phase Mitigation measures Location Applied standards responsible for responsible social issues mitigation implementation for monitoring - The management unit of the reservoir works closely with the Commune People's Committee and the local people to promptly report on dam-related risks to timely propose remedial action. - People and local authorities take initiative in community- based disaster preparedness planning - Develop scenarios for predicting the extent of r effects, options for migration, solutions for life and property of community in emergency situations. Detailed contents are included in the Dam Safety Report and Subproject Emergency Response Plan. Implementation of - Assist Plant Proteciton The Law on Plant The programs Department of Department integrated pest Stations in Lam Dong reservoir Protection and are Agricultural and of prevention plan province in enhancing the area and the Quarantine implemented Rural Agricultural management of pest and downstream 41/2013/QH13 by Plantation Development, and Rural pesticides; area Circular No. and Plant Sub-department Development - Enhance environmental 21/2015/TT- Protection of plantation , PCs of protection, safety of food BNNPTNT; Sub- and plant districts and hygiene; Decision No. Departments protection, the city - Raise awareness of this issue 2027/QD-BNN- and the agricultural

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province CHAPTER VIII: PUBLIC CONSULTATION AND INFORMATION DISCLOSURE

529. Requirement on environmental protection of Vietnam (Circular No. 27/2015/TT-BTNMT ) on environmental impact assessment and contents and requirement of the policy of World Bank (OP 4.10) on environmental impact assessment that: Project affected localities and NGO in the localities need to be consulted during the process of implementing environmental impact assessment report. Community consultation and information disclosure are conducted in two forms: i) organizing meetings and direct discussion with relevant management units, local authorities of wards/commune and communities in the project area; ii) send official letters and project documents for official consultation on environmental impacts and environmental protection measures of the project to commune people's committees of communes and wards in the project area. In addition, interviews with AHs in the subproject area are also conducted to further assess impacts and find out about community feedback on the subproject. 8.1. Public consultation 8.1.1. Content and form of consultation 530. Community consultation is conducted in accordance with the guidelines of Circular No. 27/2015/TT-BTNMT dated 29 May 2015 of the Ministry of Natural Resources and Environment and the World Bank. The purpose of the consultation is to inform the community and the stakeholders about the subproject, learn about the current environment condition, the degree of sensitivity of the environmental impacts of the project and collect the relevant information to ensure that all adverse impacts of the subproject activities on the community will be fully considered and assessed and proposed mitigation measures are feasible, consistent with conditions in locality. 531. Form of consultation: The PMU has organized a total of six community consultation meetings in the project communes/towns. The actual time of the community consultation meetings is as follows: - 8h00 on 24 June 2019: Community consultation meeting in Phuc Tho commune; - 14h00 on 24 June 2019: Community consultation meeting in Lien Ha commune; - 8h00 on 25 June 2019: Community consultation meeting in Tu Tra commune; - 8h00 on 26 June 2019: Community consultation meeting in Dinh Lac commune; - 14h00 on 26 June 2019: Community consultation meeting in Dinh Trang Hoa commune; - 14h00 on 27 June 2019: Community consultation meeting in Gia Vien commune; - 8h00 on 27 June 2019: Community consultation meeting in Loc Thang town; 532. Participants in the community consultation meetings are the representatives of local units and organizations such as representatives of the People's Committees, residential group, veterans' association, women's union, youth union, elderly association, etc. and representatives of affected households. 533. Besides organizing the meeting, PPMU Lam Dong sent an official dispatch No. 136/CV- DTXDCT dated 27/02/2019 by Project Management Unit of Construction and Investment on Agricultural Works and Rural Development in Lam Dong province with attachment of document summarizing the main investment items, environmental issues, environmental protection solutions of the subproject to the People's Committee and the Fatherland Front Committee of 6 communes for consultation during the preparation of the ESIA report. The comments of the participants in the meeting will be expressed in written replies of the Communal People's Committees. 8.1.2. Result of public consultation 534. After listening to the introduction about the scale of the project, technical options of each work item, impacts caused by the project on environment and proposal of mitigation measures on the

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province impacts, participants have given many questions as well as contribution to the project as mentioned in the table below.

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Table 79. Summary of the consultation results and feedback from the project owner Comments in localities No. Commune/town About negative About mitigation measures Recommendations for the project owner impacts of the project for negative impacts 1 PC of Phuc Tho Agree with Agree with mitigation - The contractor needs to adequately implement Commune Environmental Impact measures for negative impacts measures of environmental protection during Official responding Assessment Report of the project on the construction; letter No. 08/UBND (EIA) of the project environment as mentioned in - During construction, the contractor needs to collaborate dated 28/02/2019 EIA. with the local to have a suitable plan of water discharge. 2 PC of Lien Ha Agree with EIA of the Agree with mitigation - The contractor needs to adequately implement commune project measures as mentioned in EIA measures of environmental protection during Official responding of the project construction; letter No. 22/TTr- - During construction, the contractor needs to collaborate UBND dated with local authorities to ensure security. 18/03/2019 3 PC of Tu Tra Agree with EIA of the Agree with mitigation - The project owner needs to check, supervise, direct the commune project measures as mentioned in EIA construction contractor to adequately implement Official responding of the project mitigation measures for impacts on the environment.; letter No. 18/UBND - The project owner needs to accelerate the construction dated 14/03/2019 progress at the time when the people complete harvesting crops to avoid effects on production activities of the people. ; - The project owner needs to accurately and fully follow contents committed in the EIA consulting document during construction. 4 PC of Dinh Lac Agree with EIA of the Agree with mitigation - The construction unit needs to adequately follow commune project measures as mentioned in EIA contents committed in EIA; ; Official responding of the project - The project owner needs to collaborate with local letter No. 14/UBND authorities during construction. dated 18/03/2019

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Comments in localities No. Commune/town About negative About mitigation measures Recommendations for the project owner impacts of the project for negative impacts 5 PC of Gia Vien Agree with EIA of the Agree with mitigation - The contractor needs to adequately implement commune project measures as mentioned in EIA mitigation measures for impacts on the environment; Official responding of the project - The spillway top should be lifted up to a height of 0.5-1 letter No. 11/UBND m to ensure sufficient water for irrigation. dated 19/02/2019 535. In addition, the recommendations of the people are summarized below: Table 80. Summary of results of consultation on environment and society of AHs Full name of No. people with Position Comments Responses of the investor comments Phuc Tho I commune 1 Hoang Van Vice- The local has only Phuc Tho Farm reservoir yet in - PMU totally agree with Mr. Hai and compensation/ Hai chairman of investment. Demand of water in this reservoir is high. support as stipulated for HHs who plant trees along communal Water level in this reservoir is at the safe level now but the dam; PC the dam structure is unsafe, needs to be repaired. When - Construction flow directing will be implemented discharging water to reinforce the downstream slopes, during construction, ensure water source for it needs to have a suitable solution to still ensure water irrigation. for irrigation. Some HHs plant trees inside the reservoir guardrail, if tree removal is required, it should be considered to have a support for the HHs. 2 Le Thi Lai Household The HH is eager to have the management road - Agree with the HH and will bring this idea to the concreted to travel more conveniently. The HH plan of ensuring traffic safety during construction requires the contractor to restrict or do not arrange of the contractor. material transport at end/start school-time to ensure traffic safety.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Full name of No. people with Position Comments Responses of the investor comments 3 Pham Van Household The HH is happy with the upgrade of the dam. The - Community consultation will be implemented Tien dam is currently degraded, if not being repaired, the during the project implementation. dam will be broken and the HH will not have irrigation water. The HH agrees with mitigation measures mentioned. It should be concreted the dam surface with a width of 5m and it needs a detailed construction plan. 4 Nuong Van Culture- Holding at the current water level is reasonable. - The project only repairs the dam, not change the Rong society volume of the reservoir. official 5 Nguyen Khac Cadastral The dam status is the earth dam, unsafe, leaked dam - Construction flow directing will be implemented Tuan official body. In 2016, communal PC requested PC of Lam Ha during construction, ensure water source for district to repair but not yet invested. It should be irrigation. noticed that the design needs to suit with characteristics of the reservoir, the dam foot needs to treat carefully. During construction, the contractor needs to collaborate with the locality to have an appropriate plan of water discharge. 6 General - All HHs agree with the repair of the reservoir. - PMU totally appreciates and agrees with all comments - The contractor needs to adequately implement comments of communes/town about issues relevant measures of environmental protection during to environmental issues and measures of construction. environmental protection stated in this report.

II Lien Ha commune 1 Bui Van Bai Household It needs to figure out that if the repair causes a raise of - The project only repairs the dam, not change the reservoir water level, if yes, it will damage the volume of the reservoir. production area of the people and compensation is - Construction flow directing will be implemented required. It needs to have detailed construction during construction, ensure water source for methods to ensure sufficient water for irrigation. irrigation. Environmental and Social Impact Assessment (ESIA) 228

Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Full name of No. people with Position Comments Responses of the investor comments 2 Nguyen Van Household Although the construction process affect on irrigation - The project will shortly implement as the progress. Duc water source in short-term, due to the long-term benefits of the project the HH definitely agree with the project and ask all HHs within the area to support for the project so that the project can be early implemented. 3 Nguyen Anh Household The HH requests the project to consider for investing in - The project only repairs and upgrades the dam Tuan an additional water conveying channel behind the dam safety. for irrigation of the people living below the dam. 4 Nguyen Thi Su Household The HH has a house near the dam area, the house was - Compensation/support will comply with legal previously transferred by a hand-written document, regulations. now in the procedure of offering the certificate of land- use right. If the house is acquired, the HH requires satisfactory compensation. 5 Phan Dai Vice- The dam is leaked now, investment in repair is - Community consultation and cooperation with Thang chairman of necessary to ensure safety of the reservoir. The communal PC will be implemented during the communal contractor needs to collaborate with local authorities project implementation. PC during construction. Draining water to reinforce the dam downstream slope needs to be implemented step- by-step. 6 General - Participants agree with the investment project and - PMU totally appreciates and agrees with all comments expect the project to be shortly implemented; comments of communes/town about issues relevant - The contractor needs to comply with measures of to environmental issues and measures of environmental protection during construction. environmental protection stated in this report.

III Tu Tra commune 1 Ja Hang Household The HH requires keeping the water level during - Construction flow directing will be implemented

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Full name of No. people with Position Comments Responses of the investor comments construction of R’lom reservoir at a level to ensure during construction, ensure water source for water source for irrigation. irrigation. 2 Ja Kan Household It needs to inform the people about water discharge - Community consultation and cooperation with schedule. The HH agrees with mitigation measures communal PC will be implemented during the mentioned in the meeting, especially the project implementation. implementation of watering when having dust. If the - The contractor will compensate for any damage to transportation process damages the road, the contractor the traffic road during construction; has to repair to the previous status. In this area, there - Before construction, the contractor will hold a are two cultivation seasons: Summer-Autumn season meeting to ask for comments of stakeholders. (May to October) and Winter-Spring season (December to April), the most appropriate construction time is after harvest completion or in Autumn when there are raining, the people no longer depend on irrigation water from the reservoir. 3 Phan Thi Thu Secretary of This person totally agrees with the project - Compensation/support will comply with legal Cau Sat implementation. In downstream of Cay Xoai reservoir - regulations. village semi-flooding area - there is a HH who rents land for Party cell production. On the left of Suoi Dia reservoir, K’Hieu household has a house built inside the reservoir guardrail (K’Hieu household does not have land). Thus, when doing site clearance for construction, a proper support should be given to these HHs. 4 Dinh Van Vice- The locality highly value and welcome the investment - Construction flow directing will be implemented Hoang chairman of in repairing reservoirs in the communal area and during construction, ensure water source for communal suppose to repair the remaining reservoirs within the irrigation. PC commune. The locality pledged to cooperate with the investor in the project implementation. The locality proposes villages to support the contractor in renting houses for workers. The project needs to fully review the list of AHs and provide satisfactory

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Full name of No. people with Position Comments Responses of the investor comments compensation/support for HHs, especially EM HHs. Construction time should be planned carefully not to affect on normal production activities of HHs. The contractor needs to take mitigation measures for environmental impacts. IV Dinh Lac commune 1 Nguyen Thi Household The HH has a house and a pond within the scope of the - Compensation/support will comply with legal Lai reservoir in upstream (semi-flooding area), if being regulations. cleared, the HH will be in difficulty. The HH request a support plan to stabilize life. 2 Trieu Thi Household The HH has 2 houses and a pond within the scope of - Compensation/support will comply with legal Phong reservoir in upstream (semi-flooding area). At the end regulations. of 2018, the HH will harvest fishes and return the reservoir surface site. Regarding 2 houses, the HH requests the government to provide a support to relocate at another place. 3 Bui Van Dien Household The HH encroached 5 acres of land within the reservoir - Compensation/support will comply with legal to build a fish pond, requests the Government to offer a regulations. support for digging work. 4 Vu Van Duc Household The HH agrees with measures of environmental - Compensation/support will comply with legal protection during construction. However, it needs to regulations. have a satisfactory support plan for the HHs who encroach the reservoir bed to dig a fish pond. 5 Nguyen Chairman In the past three years, the reservoir has been degraded, - Compensation/support will comply with legal Truong Giang of sedimentation occurred in upstream, downstream is regulations. communal limited in supply/drainage of water, resulting in - The project will shortly implement as the progress. PC flooding crop area of the people or water shortage in

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Full name of No. people with Position Comments Responses of the investor comments the dry season. The locality is happy with the investment in repair of Thanh Bach reservoir. At the beginning of 2018, the locality announced to the people about the plan of reservoir repair to have a plan of site handover for the project. For affected crops/structures, it is required for the project to consider a satisfactory support for the people. The locality expects to shortly implement the project. V Dinh Trang Hoa commune 1 Phung Van Household The HH agrees with the investment in reservoir repair, - Agree with the HH and will bring this idea to the Nhan it should be noticed not to raise the water level to avoid plan of ensuring traffic safety during construction impacts on production area of the people. The of the contractor. construction unit needs to take mitigation measures for environmental impacts, especially arrangement of workers working at the dam body. Because this road is also the traffic road of HHs, a bypass should be built during construction. 2 Nguyen Tuan Household The HH agrees with the project implementation. If - Agree with the HH and will bring this idea to the affecting coffee trees of the HH, the project needs to plan of ensuring traffic safety during construction consider a satisfactory support/compensation. The of the contractor. contractor needs to ensure environmental sanitary during construction. In downstream side, the dam body is also the traffic road, here also has a bridge over the spillway. Therefore, when constructing, warning poles should be installed to ensure safety. 3 Do Trong Duc Cadastral The localities totally agree with the project investment. - Relevant stakeholders will supervise the official The locality requires the contractor to strictly ensure implementation of mitigation measures of the environmental sanitary during construction. contractor.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Full name of No. people with Position Comments Responses of the investor comments 4 General - Agree with the investment policy in repairing the - PMU totally appreciates and agrees with all comments reservoir, enhancing safety when operating the comments of communes/town about issues relevant reservoir. ; to environmental issues and measures of - The contractor needs to strictly comply with environmental protection stated in this report. mitigation measures for environmental impacts during construction. VI Loc Thang commune 1 Hoang Thi Thu Chairman - It needs to have measures of environmental protection - Community consultation and cooperation with Ha of town PC in the basic design; communal PC will be implemented during the - The contractor needs to collaborate with the locality project implementation. during construction; - Relevant stakeholders will monitor the - The locality requires to strictly taking measures of implementation of mitigation measures of the environmental protection during construction. contractor. 2 Nguyen Van Vice- During the reservoir operation time, there have not - The project only repairs, does not change the Thin chairman of been any unsafe issues. This person requires ensuring reservoir volume. town PC the design elevation when repairing and complying with current regulations of environmental protection. 3 Nguyen Thi President of The construction needs to ensure the progress and the - Relevant stakeholders will monitor the Tuyet Mai the town implementation of measures of environmental implementation of mitigation measures of the Father land protection. contractor. Front Committee 4 Luong Cong Cadastral The management road of the reservoir, in downstream Compensation/support will comply with legal Vu official of the dam: it needs to survey the current status, the regulations. situation of land ownership and cooperate with natural resources agencies to clarify these above issues.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Full name of No. people with Position Comments Responses of the investor comments VII Gia Vien commune 1 Nguyen Thi Household The HH owns the land before building the dam, if the - Compensation/support will comply with legal Tien dam repair requires land acquisition of the HH, regulations. compensation has to be provided. 2 Dieu K’It Household Repair of the dam downstream can affect land of the - Compensation/support will comply with legal HH, so it needs to have satisfactory compensation. regulations. 3 Nguyen Van Household The HH totally agrees with the reservoir repair. - Agree with the HH and will bring this idea to the Que Currently, Van Minh village has 150 HHs working in plan of ensuring traffic safety during construction agricultural sector, using irrigation water of the of the contractor. reservoir. This reservoir was done by the government and the people, thus it needs to offer satisfactory compensation in case of land acquisition if the people have the land-use right. The existing road through Van Minh village and Brun village with a width of 3.5m, load of 8 tons. The contractor should use vehicles with appropriate loads not to damage the road. 4 Dieu K’Xieu Household The existing road through the village with a length of 3 - The contractor will comply with the load km, a load of 8 tins, if using the vehicles with requirement for the road; excessive load, the road can be damaged. The HH - The contractor will compensate for any damage to requests the contractor to choose another route to the traffic road during construction. transport materials. 5 Dieu K’Long Household It needs to have a detailed construction plan to ensure - Construction flow directing will be implemented irrigation water supply for the HH. during construction, ensure water source for irrigation. 6 Tran Tuan Vice- - Propose to lift up the spillway top to a height of 0.5-1 - The project only repairs the dam, does not change Diep chairman of m to ensure sufficient water for irrigation; the reservoir volume.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province Full name of No. people with Position Comments Responses of the investor comments communal - The reinforcement of the dam scope needs to use - The project implementation will be strictly PC suitable materials, meet standards to avoid leakage; monitored by stakeholders. - Propose to integrate a program in Brun village for socio-economic development (restoration of smithies, brewing traditional wine, etc.) in the process of project implementation.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province 8.2. Information disclosure 536. The subproject implementation is in compliance with the World Bank policy on access to information and regulations of the Government of Vietnam. During preparation of documents of EIA, ESIA, SA, and EMDP, PPMU has disseminated the information of the subproject, environmental and social impacts and mitigation measures to the local authorities and people via leaflets and consultation meetings. 537. Subproject’s ESIA in Vietnamese language will be disclosed on the website of the Ministry of Agriculture and Rural Development, CPO, Lam Dong People’s Committee, and subproject sites accessible to locally-affected people and local NGOs, and the English version shall be disclosed on the Bank’s external website prior to subproject appraisal.

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CONCLUSIONS AND RECOMMENDATIONS ❖ Conclusion - The subproject is classified as a Category B in accordance with the environmental safeguard policy of the WB. The subproject is not located within or adjacent to any environmentally sensitive areas and does not violate the "non-conforming criteria" of WB; - The report has identified and adequately assessed the potential positive and negative impacts in all three phases of preparation, construction and operation. Mitigation measures, in consultation with authorities and affected people, including vulnerable persons, have been identified; - The subproject implementation may cause potential negative impacts during pre- construction, construction and operation phases. However, the potential negative impacts are considered moderate and proposed mitigation measures are considered financially and technically feasible in the context of the subproject. - The ESMP is prepared to manage and monitor the subproject’s impacts. The monitoring consultant regularly checks and sends monthly reports to the PPMU. Based on that, PPMU will prepare and submit the monitoring reports to CPMU. ❖ Recommendations Based on the findings of environmental impact assessment and the social environmental management plan outlined in this document, it is recommended that: - The mitigation measures mentioned in ESMP will be established as an integral part of the Request for proposal. The contractor will separate the workload and set the total cost for the implementation of the mitigation measures. The cost is considered as implementation cost of environmental safeguard policy and will be paid when the mitigation measures are committed to undertake by the contractor effectively. - PPMU recommends the competent authority and the World Bank to review the environmental and social impact assessment report of the subproject to be as the basis for implementing the next steps and to ensure the implementation progress of the subproject. ❖ Commitments of the subproject owner - With identified environmental objectives of the project and mitigation measures for negative impacts potentially happening in the project implementation period, the investor commits to strictly implementing regulations of environmental protection; adequately applying measures of mitigating pollution, tackling incidents affecting the environment and community; introduce measures of monitoring, supervising environmental quality as given in the environmental and social impact assessment report. • Compliance with standards, technical regulations - During the operation phase of the project, the project owner commits to comply with standards and technical regulations of Vietnam, including: Air ✓ TCVN 6438:2001: Road vehicles - Maximum permitted emission limits of exhaust gas Noise and vibration

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province ✓ QCVN 26:2010/BTNMT: National technical regulation on noise ✓ QCVN 27:2010/BTNMT: National technical regulation on vibration ✓ TCVN 5948:1999: Acoustics - Noise emitted by accelerating road vehicles - Permitted maximum noise level Solid waste ✓ Decree No. 38/2015/ND-CP dated 24 April 2015 of the Government on management of waste and discarded materials ✓ Circular No. 08/2017/TT-BXD dated 16 May 2017 of Ministry of Construction on construction solid waste management ✓ Circular No. 36/2015/TT-BTNMT dated 30 June 2015 of Ministry of Natural Resources and Environment on management of hazardous wastes Water ✓ QCVN 14:2008/BTNMT: National technical regulation on domestic wastewater ✓ TCVN 5502:2003: Domestic supply water - Quality requirements Soil ✓ QCVN 03-MT2015/BTNMT: National technical regulation on the allowable limits of heavy metals in the soils - Bear full responsibility before the law for violating international conventions, standards/ regulations of Vietnam and for incidents causing environmental pollution. • Commitment of implementing measures of environmental protection - Commit to implementing measures to minimize the impacts in the report. In the pre-construction phase: commit to ✓ Disseminate information of the project to all affected parties; ✓ The construction design is appropriate, the construction location is selected to avoid the residence area, markets, historical sites and religious cultural works; ✓ Undertake UXO investigation for the entire construction site to make sure that the construction site is safe before site handover to contractors; ✓ Collaborate with the locality, the people to propose reasonable measures of financial support for AHs by the construction activities of the project; ✓ Guarantee budget for activities of environmental protection; ✓ Announce 02 phone numbers of the investor and PMU to the local authorities to collaborate in handling arising issues during construction; ✓ Disclose and provide information of the project to PCs of communes, wards where the project is implemented and collaborate with communal PCs to disclose information as stipulated in Clause 3, Article 143, Law of Environmental Protection, 2014 so that the people is able to know, check and monitor.

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Subproject: Dam Rehabilitation and Safety Improvement (WB8) in Lam Dong province In the construction phase: commit to ✓ Be responsible for compensation for damages and tackle environmental pollution in cases of incidents, environmental risks occurred due to the project. ; ✓ Perform collection and treatment of hazardous waste generated from the project as the guidance in Circular No. 36/2015/TT-BTNMT; ✓ Clear the site and restore the environment as legal regulations on environmental protection at the end of the construction phase; ✓ Dispose waste at the right place with permission of competent agencies; ✓ Develop, remain and check mitigation measures for impacts to support in emergency via contacting to service suppliers, relevant local authorities and local community; ✓ Collaborate with local authorities in environmental protection and health care for the people; ✓ Repair the traffic road in case of being damaged; ✓ Implement measures of fire presentation & fighting as regulations. • Commitment of implementing the program of environmental management and monitoring - During the process of preparation, construction and operation, the subproject owner commits to effectively implementing the program of environmental management and monitoring in the report. The subproject owner also commits to monitoring incidents and risks possibly occurred for the people in the subproject area and periodically prepare and submit reports to DONRE of Lam Dong province as stipulated.

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REFERENCES 1. Report on Current Status of Urban Waste Water - Vietnam Institute of Science and Technology - Hanoi University of Science and Technology, 2006; 2. Summary reports on the implementation of socio-economic, national defense and security targets, Women 's Report, Ethnic Minorities' reports of the subproject communes; 3. Air environment, Pham Ngoc Dang, Science and Technology Publishing House, 1997; 4. DIN 4150-1: Vibrations in buildings - Part 1: Prediction of Vibration Parameters, DIN, 2001- 06; 5. Environmental Assessment Sourcebook, Volume II, Sectorial Guidelines, Environment, World Bank, Washington D.C 8/1991 6. Noise from Construction Equipment and Operations, Building Equipment, and Home Appliances, US EPA, 1971; 7. WHO - Assessment of sources of air, water, and land pollution, a guide to rapid source inventory techniques and their use in formulating environmental control strategies. Part 1: Rapid Inventory Techniques in Environmental Pollution. Geneva, Switzerland, 1993. 8. Website of DONRE in Lam Dong province http://stnmt.lamdong.gov.vn/ .

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