Environmental Monitoring Report Project Number: 36352-013 April 2015 VIE: Song Bung 4 Hydropower Project Prepared by Song Bung 4 Hydropower Project Management Board (SB4HPMB) for the Vietnam Electricity and the Asian Development Bank. This environmental monitoring report is a document of the borrower. The views expressed herein do not necessarily represent those of ADB's Board of Directors, Management, or staff, and may be preliminary in nature. In preparing any country program or strategy, financing any project, or by making any designation of or reference to a particular territory or geographic area in this document, the Asian Development Bank does not intend to make any judgments as to the legal or other status of any territory or area. SONG BUNG 4 HYDROPOWER PROJECT Monitoring and Assessment of Environmental Quality FINAL REPORT – CONSTRUCTION PHASE Prepared by SOCIALCONSULT April 2015 Monitoring and Assessment of Environmental Quality FINAL REPORT – CONSTRUCTION PHASE Song Bung 4 Hydropower Project Prepared by SOCIALCONSULT Hanoi, April 2015 SONG BUNG 4 HYDROPOWER PROJECT Environmental Monitoring Report ABBREVIATIONS ADB Asian Development Bank BOD Biochemical Oxygen Demand COD Chemical Oxygen Demand DARD Division of Agriculture and Rural Development DONRE Division of Natural Resources and Environment EMC Environmental Monitoring Consultant EMP Environmental Management Plan EVN Electricity of Vietnam HPP Hydropower Project MONRE Ministry of Natural Resources and Environment NRMB Nature Reserve Management Board QCVN National Technical Regulation of Vietnam RCC Roller-compacted concrete SB4 Song Bung 4 SB4 HPMB Song Bung 4 Hydropower Management Board TSP Total Suspended Particles TSS Total Suspended Solids FINAL REPORT ii SONG BUNG 4 HYDROPOWER PROJECT Environmental Monitoring Report TABLES OF CONTENTS EXECUTIVE SUMMARY ................................................................................................. 10 I. INTRODUCTION ......................................................................................................... 12 1.1. Introduction ................................................................................................................. 12 1.2. Objectives of the final report ...................................................................................... 12 II. PROJECT BACKGROUND AND CONSTRUCTION PROGRESS .......................... 13 2.1. Project background ..................................................................................................... 13 2.2. Summary of the project progress from the pre-construction phase to the end construction phase............................................................................................................... 16 2.2.1. Construction progress of project components .................................................... 16 2.2.2. Progress of compensation, assistance and resettlement ..................................... 21 III. SUMMARY OF ENVIRONMENTAL MONITORING IMPLEMENTATION PROCESS ............................................................................................................................ 24 3.1. Environmental monitoring visits in the pre-construction phase and the construction phase ................................................................................................................................... 24 3.2. Legal and technical bases for implementation of environmental monitoring and management of the Project ................................................................................................. 24 3.2.1. Legal bases .......................................................................................................... 24 3.2.2. Technical documents ........................................................................................... 26 3.3. Monitoring objectives and activities ........................................................................... 26 3.3.1. Objectives ............................................................................................................ 26 3.3.2. Monitoring activities ........................................................................................... 26 3.4. Methodology ............................................................................................................... 27 3.4.1. Field survey and observation .............................................................................. 30 3.4.2. Measurement, sampling and comparison with National Technical Regulations 30 3.4.3. Consultations with relevant agencies and stakeholders ..................................... 30 IV. RESULTS OF MONITORING OF ENVIRONMENTAL QUALITY IN THE PROJECT AREA ................................................................................................................. 32 4.1. Results of monitoring and assessment of air and water .............................................. 32 4.1.1. Monitoring and assessment of air quality ........................................................... 32 4.1.2. Monitoring and assessment of surface water quality .......................................... 50 4.1.3. Monitoring and assessment of underground water ............................................. 64 4.1.4. Monitoring and assessment of domestic water quality ....................................... 73 4.1.5. Monitoring and assessment of domestic wastewater quality .............................. 81 4.2. The results of preliminary monitoring and assessment of ecological environment and biodiversity ......................................................................................................................... 89 4.2.1. Positions and parameters for ecological environment monitoring ..................... 89 FINAL REPORT iii SONG BUNG 4 HYDROPOWER PROJECT Environmental Monitoring Report 4.2.2. Wildlife ................................................................................................................ 90 4.2.3. Aquatic life .......................................................................................................... 95 4.2.4. Change in vegetation ........................................................................................... 97 4.2.5. Replacement afforestation ................................................................................. 101 4.3. Health of local people and workers in the project area ............................................. 102 4.3.1. Health of local people in the project area ......................................................... 102 4.3.2. Health of project workers in the construction phase ........................................ 102 V. AGENCIES INVOLVED IN THE PROJECT ENVIRONMENTAL MANAGEMENT 104 5.1. Agencies involved in the project environmental management ................................. 104 5.2. The cooperation of relevant agencies in the environmental management of the Project 106 VI. RESULTS OF THE MONITORING OF CONTRACTORS’ COMPLIANCE WITH IMPLEMENTATION OF ENVIRONMENTAL PROTECTION MEASURES .............. 108 6.1. Implementation of mitigation measures for impacts on air quality .......................... 108 6.1.1. Mitigation measures envisaged in the EMP and contractors’ compliance ...... 108 6.1.2. Assessment of effectiveness of implementation of mitigation measures for impacts on air quality and improvement of compliance of contractors ...................... 113 6.2. Implementation of mitigation measures for impacts on water quality ..................... 114 6.2.1. Mitigation measures specified in the EMP and compliance of contractors ..... 114 6.2.2. Assessment of effectiveness of implementation of mitigation measures for impacts on water quality and improvement of compliance of contractors .................. 118 6.3. Implementation of solid waste management and treatment measures ...................... 119 6.3.1. Mitigation measures specified in the EMP and compliance of contractors ..... 119 6.3.2. Assessment of effectiveness of implementation of solid waste management and treatment measures and improvement of compliance of contractors ......................... 124 6.4. Implementation of hazardous waste management and treatment measures ............. 125 6.4.1. Mitigation measures specified in the EMP and compliance of contractors ..... 125 6.4.2. Assessment of effectiveness of implementation of hazardous waste management and treatment measures and improvement of compliance of contractors ................. 130 6.5. Implementation of mitigation measures for erosion and landslides ......................... 130 6.5.1. Mitigation measures specified in the EMP and compliance of contractors ..... 130 6.5.2. Assessment of effectiveness of implementation of mitigation measures for erosion and landslides and improvement of compliance of contractors ................................. 133 6.6. Implementation of mitigation measures for fire and explosion hazards ................... 133 6.6.1. Mitigation measures specified in the EMP and compliance of contractors ..... 133 FINAL REPORT iv SONG BUNG 4 HYDROPOWER PROJECT Environmental Monitoring Report 6.6.2. Assessment of effectiveness of implementation of mitigation measures for fire and explosion hazards and improvement of compliance of contractors ..................... 137 6.7. Implementation of measures for the health and occupational safety of workers ...... 137 6.7.1. Measures specified in the EMP and compliance of contractors ....................... 137 6.7.2. Assessment of effectiveness of implementation of measures