NATIONAL POWER TRANMISSION CORPORATION. Northern Power Projects Management Board ENVIRONMENTAL IMPACT ASSESSMENT

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1 Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized NATIONAL POWER TRANMISSION CORPORATION Northern Power Projects Management Board ENVIRONMENTAL IMPACT ASSESSMENT (Final) SUBPROJECT: HOA BINH - TAY HA NOI 220KV TRANMISSION LINE PREPARED BY: INSTITUTE OF ENERGY Ha Noi, March 2014

2 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE TABLE OF CONTENTS ABBREVIATIONS... 4 LIST OF TABLES... 5 LIST OF FIGURES... 6 SUMMARY REPORT OF ENVIRONMENTAL IMPACT ASSESSMENT PROJECT INFORMATION MAIN CONTENTS OF PROJECT IMPACTS AND METHODS TO MINIMINZE THE ENVIRONMENTAL IMPACTS OF THE PROJECT PROGRAM OF ENVIRONMENTAL MANAGEMENT, OBSERVATION AND MONITORING INTRODUCTION ORIGIN OF PROJECT LEGAL FRAME AND TECHNICAL BASIS TO IMPLEMENT ASSESSMENT OF ENVIRONMENTAL IMPACT Legal frame Environmental standards and regulations Safety policies of World Bank Technical document and data generated and collected by the project owner APPLIED METHODS DURING EIA PERIOD EIA IMPLEMENTATION CHAPTER 1: SUMMARY OF PROJECT DESCRIPTION Project name Project owner Geographical position of project The main content of the project The objective of the project The scale of the project Construction items Description of the construction methods of the works of the project Key Technology Solutions Construction methods Demands for raw materials Machinery and equipment for the project Vehicles, machinery and construction equipment in the table can be replaced by vehicles, and other machinery with equivalent technical features Organization of the project Implementation progress and human CHAPTER 2: THE NATURAL, ENVIRONMENTAL AND SOCIO-ECONOMIC CONDITION THE NATURAL AND ENVIRONMENTAL CONDITION Meteorological Conditions Hydrological conditions The geological phenomena of physics, electrical resistivity The status of the physical components of the environment The environmental incidents SOCIO EMCONOMY CONDITIONS Preliminary socio economy conditions of planed area Socio-economic conditions of households in row INSTITUTE OF ENERGY (IE) 2

3 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE CHAPTER 3: ASSESSMENT OF ENVIRONMENTAL IMPACTS ASSESSMENT OF IMPACTS IN PREPARATION AND CONSTRUCTION PHASE Sources of impacts relating to wastes in preparation phase Sources of impacts relating to wastes in construction phase Sources of impact without relation to wastes in the preparation and construction phase Impacts of the risks and incidents in the preparation and construction phase ASSESSMENT OF IMPACTS IN THE OPERATION PHASE Sources of impacts relating to the operation phase Sources of impacts without relation to the wastes in operation phase Impacts of risks and incidents in the operation phase TARGET AND SCOPE AFFECTED BY PROJECT Impacts on the natural environment Impacts on public health The interactions among the projects COMMENTS ON CONTENTS AND RELIABILITY OF ASSESSMENT CHAPTER 4: METHODS TO PREVENT, MINIMIZE NEGATIVE IMPACTS AND HANDLE THE ENVIRONMENTAL PROBLEMS METHODS TO PREVENT, MINIMIZE NEGATIVE IMPACTS Minimize the impacts in the preparation phase Minimize the impacts in the construction phase Minimizing impacts in the operation phase PREVENTIVE METHODS AND RESPONSEs TO RISK, INCIDENTS Preventive methods and responses in preparation and construction phase Method of prevention and responses in the operation phase CHAPTER 5: PROGRAM OF ENVIRONMENTAL MANAGEMENT AND SUPERVISION PROGRAM OF ENVIRONMENTAL MANAGEMENT PROGRAM OF ENVIRONMENTAL SUPERVISION CHAPTER 6: PUBLIC CONSULTANCY OVERVIEW OPINIONS OF CPCS OPINIONS OF COMMUNITY FEEDBACK FROM THE PUBLIC CONSULTANCY CONCLUSION, RECOMMENDATION AND COMMITMENT CONCLUSION, RECOMMENDATION COMMITMENT Commitments to minimize the environmental impacts Commitment to comply with Laws, Standards and Regulations of Vietnam INSTITUTE OF ENERGY (IE) 3

4 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE CPC TEP ECOP EIA EMF EMP EVN GOV HH HV LV MOIT MONRE MV NGO NPT OHL PAH PCBs PMU PPC ROW IE WB ABBREVIATIONS Commune People s Committee Transmission Efficient Project Environmental Code of Practice Environmental Impact Assessment Electromagnetic Field Environmental Management Plan Electricity of Vietnam Government of Vietnam Household High voltage Low Voltage Ministry of Industry and Trade Ministry of Natural Resources and Environment Medium Voltage Northern Grid Company National Power Transmission Corporation Overhead Line Project Affected Household Polychlorinated Biphenyls Network Project Management Unit (under the NPC) Provincial People s Committee Right of Way Institute of Energy World Bank INSTITUTE OF ENERGY (IE) 4

5 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE LIST OF TABLES Table 0.1: Position coordinate of project... 8 Table 0.2: Total investment cost Table 0.3: List of members who make environmental impact assessment report Table 1.1: Position coordinate of project Table 1.2: The Proposed line from G17 to G Table 1.3: Summary of features of the transmission line Table 1.4: Statistics of the tranmission line Table 1.5: Number of column needed to be assemplied Table 1.6: Number of foundations needed to be constructed Table 1.7: Volumn of main construction Table 1.8: The technical features of the conductor ACSR 330/ Table 1.9: Supplies of materials and equipment Table 1.10: Summarized table of major vehicles and equipment Table 1.11: Construction progress of each item are shown in the following table Table 1.12: Total investment Table 2.1: The natural and environmental condition Table 2.2: Characteristics of topography, local geology project going through Table 2.3: Main criteria of soil layers Table 2.4: Soil physical and mechanical anchor columns in the section crossing the Black River Table 2.5: Average temperature of January in the year Table 2.6: Average annual humidity Table 2.7: Total sunshine hours of the month and year are shown in Table 2.5 after Table 2.8: The monthly average wind speed and five Table 2.9: Average monthly evaporation Table 2.10 Average monthly rainfall in year Number of days with thunderstorm lightning in the area average in the following table: Table 2.11 Number of days in the year Lightning Bảng List of rivers and streams affected by project Table 2.13 The results of the resistivity measurements of soil Table Types of trees along the projects Table 2.23: Socio economy conditions in local area of Hoa Binh province Table 2.24: The socio-economic conditions of local areas in Hanoi city Table 2.25: List of households in the row Table 3.1: Coefficient of air pollution for trucks Table 3.3:Amount of fuel consumption for construction machinery and equipment Table 3.4:Coefficient of pollutant emissions Table 3.6: Pollution coefficient of air pollutants from burning DO Table 3.7: Estimated amount of pollution from burning DO Table 3.8: the concentration of air pollutantsdue to burn DO for generators Table 3.9:Noise level caused by construction machinery Table 3.10: Amount of sewage Table 3.11: Concentration of pollutants in sewage without treatment Table 3.12: Amount of wastes Table List of the affected power line and communication line Table 3.14: Allowable number of working hours INSTITUTE OF ENERGY (IE) 5

6 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE Table 5.1: Plan of environmental management Table 5.2:Program of supervising the wastes and environment Table 5.3: Cost estimation of neighborhood environment LIST OF FIGURES Figure 1.1: The proposed line going through Da River Figure 1.2: The proposed line for the part across Da river Figure 1.3: The line from G17 to G Figure 1.4: The proposed line from G21 to G Figure 1.5: The line passing through Xuan Mai area Figure 1.6: The proposed line in Quoc Oai, Hanoi Figure 2.2: Location map G26 Endpoint Figure 3.2:Diagram of sources of impacts relating to wastes Figure 3.2:Diagram of sources of impacts without relation to wastes INSTITUTE OF ENERGY (IE) 6

7 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE SUMMARY REPORT OF ENVIRONMENTAL IMPACT ASSESSMENT According to Power Development Plan of Hanoi during the period of and outlook to 2020, which is approved in Decision No.4351/QD-BCT dated 29/8/2011 of the Ministry of Industry and Trade, the 220kV Hoa Binh - Tay Hanoi transmission line is expected to operate in This project has responsibility to supply sufficient electricity to meet the demands of the Western area of Hanoi. This area includes Son Tay town and 6 districts at the North of Highway 6: Ba Vi, Phuc Tho, Dan Phuong, Hoai Duc, Thach That and Quoc Oai. These are important load areas with strong socio-economic development. Moreover, this project contributes to improve the stability of power supply for power transmission system of Hanoi and surrounding areas, which ensures to stably operate national power system. 1. PROJECT INFORMATION a. Information of project owner: Project name: 220kV Hoa Binh Tay Ha Noi transmission line - Project owner: The Northern Vietnam Power Projects Management Board PMB - Director: Mr. Phan Luong Thien - Address: 1111D Hong Ha street, Hoan Kiem District, Hanoi - Telephone: (04) Fax: (04) b. Bases of assessment report of environmental impacts Institute of Energy Ministry of Industry and Trade - Address: 06 Ton That Tung Street, Dong Da District, Hanoi. - Telephone: (04) Fax: (04) bbt@ievn.com.vn; website: - Representative: Mr. Hoang Tien Dung; Position: Director of Institute of Energy 2. MAIN CONTENTS OF PROJECT a. Geographical position of project Hoa Binh Tay Ha Noi transmission line has main characteristics as follows. - Start point: 220kV bus bar in Hoa Binh Hydropower Plant of 220kV switchyard; - End point: 220kV busbar at 220kV Tay Ha Noi substation, Quoc Oai district, Hanoi; - The proposed length of the line: 50,6 km; - Location: going through Hoa Binh, Ky Son and Luong Son district (Hoa Binh province), Quoc Oai district (Hanoi City); - Long span: getting over Da River; - Crossing the highway: 1 time (Highway No. 21) - Main terrain conditions: + Section across Hoa Binh: Main terrain is low hills and mountains; + Section across Hanoi: Main terrain is low hills and mountains; - The number of affected houses: 65. Transmission line selection is based on the main criteria as follows. - The shortest length of the line; - The most favorable geographical condition; - The most favorable terrain condition; - Limit the number of turning angles to reduce investment cost of project; - Easy to construct and monitor, etc. Other criteria: - Comply with National Power Development Master Plan; - Comply with Power Development Plan of Hoa Binh and Hanoi; INSTITUTE OF ENERGY (IE) 7

8 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE - Not much affect to residential area and planning area; - Avoid military area, historical cultural monument, national forest, etc. - No effect on the environment, landscape and other factors Position coordinates of project are shown in Table 0.1 Table 0.1: Position coordinates of project No. Turning Height of Coordinates angle column N E 1 DD G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G INSTITUTE OF ENERGY (IE) 8

9 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE b. Scale, quantity of construction and construction measures Scale of Hoa Binh Tay Ha Noi transmission line project Project of Hoa Binh Tay Ha Noi (old Hoai Duc) transmission line is constructed with scale and technical specifications as follows: - Voltage: 220kV - Number of circuits: 02 circuits, 04 circuits. - Length of the line: 50.6km - Location: going through Hoa Binh, Ky Son and Luong Son District (Hoa Binh province); Quoc Oai district (Hanoi). - Conductor: ACSR-2x330/43 and AACSR- 2 x 380/50 for Da River span. - Earthling wire: 2 earthling wires, including the usual earthling wires PHLOX 116 and the one with fiber cable OPGW 120, 24 fibers. Especially, one more earthling wire (PHLOX 116) is used in the 3km headline from Hoa Binh switchyard - Insulators: Insulator with suitable load, ceramic, glass or composite. Quantity of insulators is based on creep page distance of 25mm, 20mm/kV. Specifications are equivalent with U70B, U120B, U160B, 210B, U300B (according to IEC standards). - Column: galvanized steel with the tower-shaped column of 4 circuits and 2 free circuits. The column height for Da river span is 72m. - Foundation: The pier and reinforced concrete foundations are used. Mat foundation is used for span. - Grounding: Radial and galvanized-steel. - Reduce vibration for conductor and earthling wire. Expansion of Hoa Binh Hydropower Plant: conducted by Hoa Binh Hydropower Plant Company according to Document No.877/EVN-KH dated 22/3/2012 of EVN. This work is not in the scope of project. Quantity of construction: - The number of steel suspension columns: 78; - The number of steel tension columns: 48; - The number of steel dead-end columns: 2; - The number of crossing columns: 1 tower; - The number of 4T foundations: 124; - The number of mat foundations: 5; - Quantity of digging soil for foundation: 58377,49 m 3 ; - Quantity of backfilling soil for foundation: 56988,48 m 3 ; - Reinforced foundation: 557,45 tons; - Quantity of concrete: 6684 m 3 ; - Quantity of steel columns: 2382 tons; - Quantity of conductor, earthling wire, fiber cable: 883 tons; - The number of tension and suspension strings: 1218; - The number of sets of earthling wires: 381 sets. Construction measures: Foundation construction: - Manual excavation; - Identify the center of foundation location; - Mold, shuttering are produced in the factory and assembled on site; - Steel and reinforced concrete are made on site; - Concrete is mixed on-site by machine and be casted in place; - Install the grounding, backfill foundation hole and return the plane; - Construct the embankment foundation. INSTITUTE OF ENERGY (IE) 9

10 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE Column construction: Columns are transported to the certain location and erected by the method in which there are both manual erection and installation for all steel columns on the line. This process should be complied with the following requirements: - Bolts are tightened and checked by a wrench with a tightening force as prescribed; - Molds, boards, and formworks are produced in the factory and assembled on site; - Steel and reinforced concrete are fabricated on site; - Concrete is mixed and molded on site. Installation of insulators, accessories: - Insulator strings are installed manually at the top. It is necessary to prepare construction equipment such as block, pulley, capstan and cable. - Insulators and accessories should be cleaned before installation. The construction unit will check the broken, cracked insulators and pins before installation. Pulling and stretching for deflection: - Due to topographical conditions in which there are a lot of houses, hills, creeks and a few of relatively flat areas, stretching is mainly carried out manually in combination with machines to keep the lines at a certain height and control speed of pulling the line. - When pulling the line, we should avoid dragging the lines on the ground or hard structures that can cause them to be worn out or scratched. Pulley is used to lay and pull lines through the position of columns. For the installation of fiber cables, it is not allowed to connect lines among the columns. Fiber cable core will be connected by informatics workers. - In the sections crossing over traffic roads, power lines, information lines, and houses, the scaffolds should be firmly erected during stretching period. c. Progress According to Decision No.854/QD-TTg of the Prime Minister on approving trade and development investment plan for 5 years ( ) of the Electricity of Vietnam, Hoa Binh Tay Ha Noi transmission line is expected to operate in d. Investment cost Total investment cost: 526,746,443,000 VND. Table 0.2: Total investment cost No. Expenses Symbol Amount 1 Construction G XL 351,772,961,000 2 Equipment G TB 163,942,000 3 Land clearance G GPMB 17,434,521,000 4 Management G QLDA 5,051,122,000 5 Consultant G TV 17,218,997,000 6 Others G K 42,507,583,000 7 Contingency G DP 92,597,767,000 Total 526,746,443,000 Source: Description of project e. Construction organization Project management method is implemented by the Project Management Units as follows: - Investor: National Power Transmission Corporation (NPT); - Project managers: The Northern Vietnam Power Projects Management Board represents NPT to directly manage the project; INSTITUTE OF ENERGY (IE) 10

11 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE - Construction: Comply with the current regulations on construction investment management; - Operation management: Power Transmission Company No IMPACTS AND METHODS TO MINIMINZE THE ENVIRONMENTAL IMPACTS OF THE PROJECT a. Preparation Phase - Impacts on air: Dust arises from grading and transportation of materials and wastes and construction activities. The affected area is only at construction site, transportation route and surrounding area. - Impacts on water: When it rains, the erosion may pollute the surface water because the original surface layer has been excavated with a layer of biomass and organic soil, and filled with artificial ones to meet construction requirements. This increases the number of solid substances in the eroded surfaces to penetrate into the river, affecting water quality of the project area. - Impacts by solid wastes: The main sources are the excavated, transported topsoil and domestic solid wastes of workers at construction site. If solid wastes are not properly collected and treated in compliance with regulations, it will have negative impacts on human health, environment, and local water contamination as well as the landscape. - Impact of noise and vibration: Noise and vibration arise from land clearance activity and transport of wastes. These impacts are temporary and level of effect is small or medium, but it still causes inconvenience to local people. - Impacts of land acquisition: As calculated, none of the 65 affected households is resettled; however, there are some households losing a part of cultivated land for foundation construction. - Impacts on ecosystem: The survey results showed that the project area is mostly agricultural ecology where there is no rare fauna and flora. Thus, the main impact in this phase is washing away the impurities on the ground into the river and channel, which contaminate the surface water and affect indirectly to the environment of species. Methods of minimizing impacts on environment: - Methods of minimizing impacts on air: to cover construction site by using a system of plastic steel wall (2-4m in height); to utilize excavated soil for backfilling; to cover the trucks carrying material and arrange street sprinklers along the transport route 2 times/day during the dry period. - During the process of the land clearance, the households will lose a part of cultivated land, trees, crops, buildings, which may disturb the life and income of the households. To minimize the adverse impacts of the land clearance, the investor shall comply with the regulations on compensation for the households in the safety area of the 220 kv grids. - Domestic sewage: The amount of sewage is small. Workers will rent houses of local people for accommodation. The sewage will be treated in the septic tank before discharging into the environment. In addition, workers on site are strictly managed to minimize the direct discharge of solid wastes and sewage into the soil, rivers and groundwater. - Solid waste from excavating the topsoil will be disposed by specialized vehicles to dumping sites. - To minimize noise arising from the operation of vehicles and machines in construction site, the effective method is arranging reasonable construction time. Most construction sites are located on the hills and far away from the residential areas, the impact of noise and vibration will be, therefore, greatly reduced. However, method of minimizing impacts of noise will be taken during construction period. - Noise from the operation of the vehicles is minimized by technical solutions, periodic maintenance and high quality equipment. - The maximum working time for workers is based on provisions of Vietnamese standards on the working environment. The equipment concentration at the site will be INSTITUTE OF ENERGY (IE) 11

12 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE regulated to minimize the noise resonance. Old vehicles are not allowed to be used due to cause high level of noise. Vehicles which cause high noise (such as generators, chainsaws, etc.) are located in sheltered areas. The construction areas shall be sheltered to reduce the impacts of noise on surrounding residential areas. b. Construction phase - Impacts on air: The smoke arising during the construction, operation of machines, construction equipment and means of transportation is containing dusts, SO x, NO x, CO, CO 2, VOC It causes environmental pollution in the project area. However, this occurs only locally in the construction period, causing no serious impact on the environment. - Impacts on water: During construction time, there are teams working at different project locations. Each team will have about workers. The amount of generated sewage is approximately (m 3 /team), including residue, suspended solids, organic matter, nutrients and pathogenic microorganisms. Moreover, the amount of sewage from the construction process is about m 3 /day. There is also rainy-water containing suspended solids, chemicals, wasted oil and other pollutants on the surface of construction site. - Impacts from solid wastes: Solid wastes on site including wastes from construction activities and domestic wastes are estimated to be 20kg/day. There are oil residue and other hazardous wastes such as batteries, accumulators, chemical substances, containers of chemicals, oil rags, heavy metals, etc. in the construction process. The amount of hazardous waste is not large but there are many potential risks to the environment during storage and treatment. - Impacts of the noise and vibration: Noise generates during construction process mainly due to construction equipment, concrete mixing systems, pile-driving equipment, operation of generators, etc. - Impact of the concentration of workers: During construction phase, concentration of workers (about 300 people) from different regions. So, there are many different traditions and customs. Moreover, the length of the transmission line is 50.6km, crossing over many localities. This creates some negative impacts such as changing cultural characteristics, spreading diseases, conflicting of interest of job and income, etc. On the contrary, concentration of workers will develop economy of region, increase cultural exchanges and promote service industries. - Impact from increasing traffic flow: Increasing traffic flow could cause traffic accidents, road subsidence and traffic jams. Method of minimizing impacts: - Method of minimizing impacts on air: covering construction site; dividing the site into different small locations and finishing the work one by one to minimize dust; chemical, fuel oil, paint storage areas will be shielded; the containers have lids, warning plates; storage area should be safe and ventilated to reduce impact due to odor and fire. - Domestic sewage: As described above, workers will rent houses of local people for accommodation. Wastewater will be treated in the septic tank before discharging into the environment. - Rainwater: There are drains around the bottom of foundation pits to irrigate water into 2 0.5m 3 holes (the main component is ground water and rain water), which will then be deposited to sort out mud sediments. After that, water from the two holes will be pumped into the surrounding rivers and canals. - Method of minimizing impacts of solid wastes and hazardous wastes: Wastes are removed from the site and treated in accordance with the Circular No.12/2011/TT-BTNMT dated 14/04/2011 of the Ministry of Natural Resources and Environment on hazardous waste management. The investors will sign a contract with functional units (eg: URENCO) to collect and dispose hazardous wastes generated during construction period. INSTITUTE OF ENERGY (IE) 12

13 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE - Method of minimizing impacts on the concentration of workers: First, priority is given to using local manpower. Second, the contractor shall regularly advice and raise awareness of workers. Additionally, the contractor will cooperate with local authorities to manage construction workers to prevent security disorder and conflict with surrounding residents. - Measures to reduce accidents and traffic jams: Regulate that the speed of vehicles crossing to residential areas is not exceeded 20km/h; the warning lights and traffic signs are equipped in the routes of project. - Contractors and workers are required to strictly implement the regulations on labor safety and fire prevention. c. Operating phase - Impact on air: During operating phase, there are not any activities affecting to air quality. - Impact on water: During operating phase, there are not any activities affecting to water quality. - Impacts from solid wastes and hazardous wastes: Wastes from operation, periodic maintenance activities of project include the broken stoneware, unnecessary electric wire and cutting branches. The amount of waste depends on the number of repairing and maintaining times. - Impacts of electromagnetic fields: Electromagnetic fields can cause heating effects on human body, such as changing the frequency of pulse, heart rate and capillaries reaction, the dysfunction of the central nervous system, arrhythmias, glaucoma... Methods of minimizing the impacts: - Methods of minimizing the impacts on air: During operating phase, there is no emission; therefore, these methods are not necessarily taken. - Methods of minimizing the impacts on water: During operation phase, there is no generated sewage. Therefore, these methods are not necessarily taken. - Methods of minimizing the impacts on solid wastes: The solid wastes as branches can be utilized for firewood; the replaced wires or broken stoneware are collected and concentrated at specified places. - Methods of minimizing the impacts of electromagnetic fields: Design of transmission line complies with the safety standards on electricity and public health as well as the effects of the corridor. Protective equipment is equipped for the workers who work in the high electromagnetic field. It is necessary to monitor periodically electromagnetic field along the transmission line and set up the safety corridors of grid. 4. PROGRAM OF ENVIRONMENTAL MANAGEMENT, OBSERVATION AND MONITORING - Training and improving the ability of environmental management for staffs and operation workers. - Develop the system of environmental reporting for the corresponding levels in the operating phase. - Monitor and observe the specific indicators of the pollution of water, air, soil, and electromagnetic fields. - Check and take methods to minimize negative impacts on the environment and recover the environment after construction. - Identify the risks of environmental degradation and take timely preventive measures. - Inspect the performance of the works and pollution treatment facilities. - Apply technical solutions in designing to control the intensity of electromagnetic fields in a corridor area (under 5kV/m). INSTITUTE OF ENERGY (IE) 13

14 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE INTRODUCTION 1. ORIGIN OF PROJECT The West of Hanoi has been rapidly developing and there are many important power sub loads. There are lacks of 220kV power supply in this area because the power is partly supplied by 220kV substations of Ha Dong, Chem, Xuan Mai that are inherently overloaded. Therefore, Hoa Binh Tay Ha Noi 220kV transmission line mainly aims at supplying power for Western areas of Hanoi. Moreover, this project will contribute to supply stable electricity for Hanoi and other regions, as well as to reduce the load for 220kV transmission lines from Hoa Binh to Ha Dong and Xuan Mai. The project of Hoa Binh Tay Ha Noi 220kV transmission line aims at supplying power from Hoa Binh 220kW transformer station to the national grid, meeting the requirement on industrial, economic social development of Hoa Binh province and the Western areas of Hanoi in the period of The project of Hoa Binh Tay Ha Noi 220kV transmission line is under Master Plan of National Power Development in the period of , vision to 2030 (Master Plan VII) approved by the Prime Minister in the Decision No.1208/QD-TTg dated 21/7/2011. Complying with Law on Environmental Protection dated 29/11/2005 of National Assembly of the Socialist Republic of Vietnam, Decree No.29/2011/ND-CP of the Government provides strategic environmental assessment, environmental impact assessment and environmental protection commitment, Circular No.26/2011/TT-BTNMT dated 18/7/2011 of Ministry of Natural Resources and Environment and sub-law documents of the Government and Ministry of Natural Resources and Environment. Moreover, according to instructions of Circular 26/2011/TT- BTNMT dated 18/7/2011 of Ministry of Natural Resources and Environment, the Northern Vietnam Power Projects Management Board cooperates with the Institute of Energy Ministry of Industry and Trade to make a report on environmental impact assessment (EIA) for the project of Hoa Binh Tay Ha Noi 220kV transmission line. This report is made to assess the environmental impacts, to propose methods of minimizing the negative impacts, to prevent and respond to environmental incidents, to develop environmental monitoring and assessment program based on the sustainable development principles during construction and operation phase of the project. 2. LEGAL FRAME AND TECHNICAL BASIS TO IMPLEMENT ASSESSMENT OF ENVIRONMENTAL IMPACT 2.1. Legal frame 1. Law on Environmental Protection 2005 of National Assembly of the Socialist Republic of Vietnam dated 29/11/2005, under Decision No. 52/2005/QH11; 2. Construction Law is approved on 26/11/2003 at the 4 th session of National Assembly XI, to be promulgated on 10/12/2003; 3. Law on Electricity is promulgated on 03/12/2004 by the National Assembly of the Socialist Republic of Vietnam according to Decision No. 28/2004/QH11; 4. Law on People s Health Protection Law No. 21-LCT/HDNN8 is approved by the 8th National Assembly of the Socialist Republic of Vietnam on 30/6/1989; 5. Law on Investment in 2005 is approved by the 11 th National Assembly of the Socialist Republic of Vietnam at the 8 th session on 29/11/2005; 6. Law on land Law No. 13/2003/QH11 is approved by the 11 th National Assembly of the Socialist Republic of Vietnam at the 4 th session on 26/11/2003, to be effective from 10/12/2003; 7. Labor Law Law No. 10/2012/QH13 is approved by 13 th National Assembly of the Socialist Republic of Vietnam at the 3 rd session on 18/06/2012, to be effective from 01/05/2013; INSTITUTE OF ENERGY (IE) 14

15 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE 8. Biodiversity Law Law No.20/2008/QH12 is approved by the 12 th National Assembly of the Socialist Republic of Vietnam at the 4 th session on 13/11/2008,, to be effective from 28/11/2008; 9. Law on Forest Protection and Development Law No.58/LCT/HĐNN8 is approved by 8 th National Assembly of the Socialist Republic of Vietnam at the 9 th session on 12/8/1991, to be effective from 19/08/1991; 10. Law on environmental protection tax Law No.57/2010/QH12 is approved by National Assembly of the Socialist Republic of Vietnam on 15/11/2010; 11. Law on Fire Prevention and Fire Fighting Law No.27/2001/QH10 is approved by National Assembly of the Socialist Republic of Vietnam on 29/06/2001; 12. Law on Investment No. 59/2005/QH11 is promulgated by National Assembly of the Socialist Republic of Vietnam on 29/11/2005; 13. Decree No.59/2007/ND-CP dated 09/04/2007 of the Government on solid waste management; 14. Decree No.117/2009/ND-CP dated 31/12/2009 of the Government on the handling of law violations in the domain of environmental protection; 15. Decree No.106/ND-CP dated 17/8/2005 of the Government on amending and supplementing a number of articles of the Law on Electricity regarding the safe protection of high-voltage power grid works; 16. Decree No.81/2009/ND-CP dated 12/10/2009 of the Government on amending and supplementing a number of articles of the Government's Decree No.106/2005/ND-CP of August 17, 2005, detailing and guiding the implementation of a number of articles of the Electricity Law. regarding the safe protection of high-voltage power grid works; 17. Decree No.169/2003/ND-CP dated 24/12/2003 of the Government on electricity safety; 18. Decree No.29/2011/ND-CP dated 18/4/2011 of the Government on providing strategic environmental assessment, environmental impact assessment and environmental protection commitment; 19. Decree No.12/2009/ND-CP dated 10/02/2009 of the Government on management of investment projects on the construction of works; 20. Decree No. 69/2009/ND-CP dated 13/08/2009 of the Government on additionally providing for land use planning, land prices, land recovery, compensation, support and resettlement; 21. Circular No.26/2011/TT-BTNMT dated 18/7/2011 of the Ministry of Natural Resources and Environment on detailing a number of articles of the Government's Decree no. 29/2011/ND-CP of April 18th 2011, on strategic environmental assessment, environmental impact assessment and environmental protection commitment; 22. Circular No.12/2011/TT-BTNMT dated 14/04/2011 of the Ministry of Natural Resources and Environment on stipulating hazardous waste management; 23. Circular No.22/2010/TT-BXD dated 03/12/2010 of the Ministry of Construction on labor safety in work construction; 24. Circular No.28/2011/TT-BTNMT, Circular No.29/2011/TT-BTNMT and Circular No. 33/2011/TT-BTNMT dated 01/8/2011 of the Ministry of Natural Resources and Environment on providing for the technical process of environmental inspection for air and noise, continent surface water and soil; 25. Circular No.16/2009/TT-BTNTM dated 07/10/2009 of the Ministry of Natural Resources and Environment on defining national technical regulations on environment; 26. Circular No.39/2010/TT-BTNTM dated 16/12/2010 of the Ministry of Natural Resources and Environment on defining national technical regulations on environment; 27. Circular No.03/2010/TT-BCT dated 22/01/2010 of Industry and Trade of Ministry of some regulations on the protection and safety of high voltage power grid works; INSTITUTE OF ENERGY (IE) 15

16 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE 28. Decision No.1208/QD-TTg dated 21/7/2011 of the Prime Minister approving National Power Development Master Plan in the period of outlooks to Decision No.16/2008/QD-BTNMT dated 31/12/2008 of the Ministry of Natural Resources and Environment on promulgating of national technical regulation on environment; 30. Decision No.4351/QD-BCT dated 29/8/2011 of Ministry of Industry and Trade on approving Power Development Plan in Hanoi City for outlook to 2020 ; 31. Document No.1920/TTg-CN dated 01/12/2005 of the Prime Minister on designing basically of power grid projects Environmental standards and regulations Regulations on air and noise quality: - QCVN 05:2009/BTNMT: National technical regulations on ambient air quality (for CO, SO 2, NO 2, total dust). - QCVN 26:2010/BTNMT: National technical regulations on noise. - QCVN 27:2010/BTNMT: National technical regulations on vibration. Regulations on water quality: - QCVN 08:2008/BTNMT National technical regulations on surface water quality. - QCVN 14:2008/BTNMT National technical regulations on wastewater. - QCVN 02:2009/BYT National technical regulations on domestic water quality. Regulations on soil quality: - QCVN 43:2012/BTNMT: National Technical Regulations on Sediment Quality. - QCVN 03:2008/BTNMT: National technical regulations on the pesticide residues in the soils. Standards and regulations on other environmental quality: - TCVN 4086:1995 group H: Electrical safety in construction - QCVN 01:2008/BCT: National technical regulation on Electric safety. - QCVN 07:2009/BTNMT: National Technical Regulation on Hazardous Waste. - Status on managing and protecting the environment in Vietnam Electricity (QC-09-01), issued with Decision No.546/QD-EVN dated 06/09/2011 of Council Members of Vietnam Electricity. - Decision No.3733/2002/QD-BYT dated 10/10/2002 of the Ministry of Health promulgating 21 labor hygiene standards, 05 principles and 07 labor hygiene measurements (Standard No.14,15,16,17 Magnetic standard and electric field strength) Safety policies of World Bank Assessment report of environmental impacts in Hoa Binh - Tay Ha Noi 220kV transmission line is complied with safety policies of World Bank such as: Environmental assessment (OP 4.01), Indigenous People (OP/BP 4.10), and Involuntary Resettlement (OP/BP 4.12). Moreover, EIA of this project must be complied with the requirements of World Bank s Safety policies about stakeholders consultation and information publication. Implementation of Involuntary Resettlement Policy will be mentioned in another report. The screening has also resulted in categorizing the subproject as a Category B project. In addition, the Bank s requirements on public consultation and information disclosure will need to be followed. An environmental and social screening of the subproject was undertaken in line with the OP 4.01 and it showed that the World Bank s policies on Environmental Assessment (OP/BP 4.01), Indigenous People (OP/BP 4.10), and Involuntary Resettlement (OP/BP 4.12) will be triggered for the subproject. The screening has also resulted in categorizing the subproject as a Category B project. In addition, the Bank s requirements on public consultation and information disclosure will need to be followed. Environmental Assessment (OP/BP 4.01): INSTITUTE OF ENERGY (IE) 16

17 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE Environmental Assessment (EA) is an umbrella policy for the Bank s safeguard policies. The overarching objective is to ensure that Bank-financed projects are environmentally sound and sustainable, and that decision-making is improved through appropriate analysis of actions and of their likely environmental impacts. The EA process is intended to identify, avoid and mitigate potential impacts of Bank operations. EA takes into account the natural environment (air, water, and land); human health and safety; social aspects (involuntary resettlement, indigenous peoples, and physical cultural resources); and transboundary and global environmental aspects. EA considers natural and social aspects in an integrated way. This subproject triggers OP 4.01 because it involves the construction and operation of a high-voltage substation and connecting overhead transmission lines, requiring the identification, mitigation and monitoring of potential adverse environmental and social impacts. As required by OP 4.01 and the government EA regulation, the subproject has prepared an EIA and an EMP that meet the Government s and the World Bank s safeguards requirements. By the TEP appraisal, the subproject draft EIA and EMP have been disclosed locally at the subproject areas and the Bank s InfoShop in Washington DC on January 24, 2014 as required by OP 4.01 and the Bank s policy on access to information. The final subproject EIA and EMP were disclosed locally at the subproject sites, at the Bank s InfoShop, and the Vietnam Development Information Center on April 18, Involuntary Resettlement (OP/BP 4.12) The Involuntary Resettlement policy seeks to prevent severe long-term hardship, impoverishment, and environmental damage to the affected peoples during involuntary resettlement. OP 4.12 applies whether or not affected persons must move to another location. The Bank describes all these processes and outcomes as involuntary resettlement, or simply resettlement, even when people are not forced to move. Resettlement is involuntary when the government has the right to expropriate land or other assets and when affected people do not have the option to retain the livelihood situation that they have. This policy is triggered because the subproject it would have impacts involving the temporary and permanent involuntary taking of land and the loss of structures and assets associated with the land for the construction of the substation and the associated connecting line. By appraisal, the subproject has prepared and disclosed a draft RP locally at the subproject areas and the Bank s InfoShop in Washington DC on January 24, 2014 as required by OP 4.01 and the Bank s policy on access to information. The RP includes the measures to ensure that displaced people are: (i) informed about the options regarding resettlement; (ii) consulted and offered alternative resettlement choices; and (iii) provided with effective compensation and livelihood restoration. The final subproject RP was disclosed locally at the subproject sites, at the Bank s InfoShop, and the Vietnam Development Information Center on April 18, Indigenous People (OP/BP 4.10) 1 : This Indigenous Peoples policy is designed to ensure that the development process fully respects the dignity, human rights, economies and cultures of Indigenous Peoples. The policy requires projects to identify impacts on indigenous peoples and develop a plan to address the impacts, both positive and adverse. Projects should be designed with benefits that reflect the cultural preferences of indigenous peoples. The borrower should carry out free, prior, and informed consultation and obtain broad community support for the project. 1 Full treatment of OP/BP 4.10 can be consulted at epk: ~pipk: ~thesitepk:584435,00.html INSTITUTE OF ENERGY (IE) 17

18 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE The subproject is located in geographical areas where ethnic minority communities of the Muong people are present. Therefore, this policy is triggered. As required by OP 4.10, an EMPF has been prepared that sets out guidelines to: (a) ensure that the EM people receive social and economic benefits that are culturally appropriate; (b) avoid potentially adverse effects on the ethnic minority communities; and (c) when such adverse impacts cannot be avoided, minimize, mitigate, or compensate for such effects. An EMDP has also been prepared for this subproject. The EMDP includes a summary of the consultations, the scope of impacts and mitigation measures, activities for the enhancement of project implementing agencies and estimated costs for the Plan. All the EMPF and EMDP have been disclosed locally at the subproject areas and the Bank s InfoShop in Washington DC on January 24, 2014 as required by the Bank s policy on access to information. World Bank Group Environmental, Health, and Safety Guidelines World Bank-financed projects should also take into account the World Bank Group Environmental, Health, and Safety Guidelines 2 (known as the "EHS Guidelines"). The EHS Guidelines are technical reference documents with general and industry-specific examples of Good International Industry Practice. The EHS Guidelines contain the performance levels and measures that are normally acceptable to the World Bank Group and are generally considered to be achievable in new facilities at reasonable costs by existing technology. The environmental assessment process may recommend alternative (higher or lower) levels or measures, which, if acceptable to the World Bank, become project- or site-specific requirements. This subproject should conform the Environmental, Health, and Safety Guidelines for Electric Power Transmission and Distribution and the General EHS Guidelines Technical document and data generated and collected by the project owner 1. Report of project description, drawings, total investment cost and economic financial analysis and calculation appendix of the project Hoa Binh Tay Ha Noi 220kV transmission line are made by Institute of Energy in April Environmental inspection result is made by Key Laboratory for High Voltage - Institute of Energy in October Environmental inspection result of platform is made by Department of Chemistry Physics Laboratory, Operation Service and Environmental Analysis at Institute of Chemical Biological Technology and Operation Document in November Document No.6195/CV-EVN-KH dated 21/11/2007 of Vietnam Electricity on tasking Institute of Energy to construct Hoa Binh Tay Ha Noi (old Hoai Duc) 220kV transmission line. 5. Document No.785/UBND-CN dated 19/5/2008 of the People s Committee of Hoa Binh province on negotiating to the alignment of Hoa Binh Tay Ha Noi 220kV transmission line. 6. Document No.132/CDS-QLĐS dated 24/01/2008 of Vietnam Waterway Department on safety clearance of transmission line getting over Da River. 7. Document No.1257/BQP-TM dated 18/3/2008 of Ministry of National Defense on negotiating to the alignment of Hoa Binh Tay Ha Noi 220kV transmission line (old Hoai Duc). 8. Document No.107/VNL-TT1 dated 24/9/2009 of Institute of Energy for the approval of position of 220kV, 110kV substation. 2 The EHS Guidelines can be consulted at INSTITUTE OF ENERGY (IE) 18

19 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE 9. Document No.1305/QHKT-HTKT dated 03/06/2009 of Hanoi Department of Planning and Architecture on the position of Hoai Duc 220kV substation and connecting 220,110kV transmission lines. 10. Document No.656/VNL-TT1 dated 03/07/2009 of Institute of Energy on the position of 220kV substation. 11. Document No.513/UBND-C dated 09/07/2009 on the position of 220kV substation in Dong Quang commune, Quoc Oai district. 12. Minutes of working with People s Committee of Quoc Oai district dated 07/04/2010 on Tay Ha Noi 50/220kV substation and transmission lines which connect with the substation. 13. Document No.1410/QHKT-HTKT dated 11/5/2010 of Hanoi Planning Architecture Department on location of Tay Ha Noi 500/220kV substation and the alignment of 220kV, 110kV transmission line connecting to the substation. 14. Document No.4208/UBND-CT dated 10/6/2010 of People s Committee of Hanoi City on arranging the layout of transmission line and Tay Ha Noi substation. 15. Document No.389/UBND-KT dated 18/5/2011 of People s Committee of Quoc Oai district on agreeing the alignment of Hoa Binh Quoc Oai 220kV transmission line. 16. Record of field inspection used to establish investment project Hoa Binh Tay Ha Noi (old Hoai Duc) 220kV transmission line among National Power Transmission Corporation, the North Power Project Management Unit and Institute of Energy on 8/7/ Document No.3032/QHKT-P7 dated 01/9/2011 of Hanoi Planning Architecture to People s Committee of Hanoi City on agreeing the alignment of 220kV, 110kV transmission line connecting to Tay Ha Noi (Quoc Oai, old Hoai Duc) 220kV substation. 18. Document No.216/BTM-T1 dated 06/01/2011 of BTL Communication on agreeing to prevent effect of high voltage transmission line to the military communication system. 19. Document No.1418/H47-P1 dated 18/10/2011 of Department of Communication - General Department of Logistics and Engineering Ministry of Public Security on preventing the effect of high voltage transmission line to communication system. 20. Document No.239/ CAHN-PH41B dated 01/03/2012 of Hanoi Police on agreeing to prevent effect of high voltage transmission line to Hanoi Police s communication system. 21. Document No.1756/BGTVT-KCHT dated 14/3/2012 of Ministry of Transport on agreeing the direction of Hoa Binh Tay Ha Noi 220kV transmission line that crossing over Highway Document No.1646/AMB-P5 dated 23/08/2012 of The Northern Vietnam Power Projects Management Board on informing the content of project, environmental protection methods of Investment Project of Hoa Binh Tay Ha Noi 220kV transmission line of communes, wards that have transmission line crossing over. 23. Reply document No.51/UBND VP dated 02/10/2012 of People s Committee of Ky Son town; 24. Reply document No.27/UBND VP dated 01/10/2012 of People s Committee of Dan Hoa commune; 25. Reply document No.--/UBND VP dated 01/10/2012 of People s Committee of Huu Nghi precinct; 26. Reply document No.42/UBND dated 02/10/2012 of People s Committee of Dan Ha commune; 27. Reply document No.41/CV-UBND dated 04/09/2012 of People s Committee of Hoa Son commune; INSTITUTE OF ENERGY (IE) 19

20 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE 28. Reply document No.36/UBND dated 03/10/2012 of People s Committee of Dong Yen commune; 29. Reply document No.1024/UBND dated 03/10/2012 of People s Committee of Can Huu commune; 30. Reply document No.52/UBND-VP dated 03/10/2012 of People s Committee of Lam Son commune; 31. Reply document No.--/UBND VP dated 01/10/2012 of People s Committee of Tan Thinh precinct; 32. Reply document No.--/UBND VP dated 01/10/2012 of People s Committee of Hoa Binh commune; 33. Reply document No.50/UBND VP dated 02/10/2012 of People s Committee of Yen Mong commune; 34. Reply document No.47/UBND VP dated 01/10/2012 of People s Committee of Mong Hoa commune; 35. Reply document No.67/CV-UBND dated 12/10/2012 of People s Committee of Luong Son town. 3. APPLIED METHODS DURING EIA PERIOD Methods applied during EIA period of the Hoa Binh Tay Ha Noi 220kV transmission line Project includes: Rapid and similar assessment: Rapid and similar assessment method is used to calculate the pollution load of sewage and air in the project area. This method which is proposed by the World Health Organization (WHO) is approved to use in many countries. In Vietnam, this method is introduced and applied in many EIA studies. This method is relatively accurate on calculating of pollution load in the limited conditions of measuring and analyzing equipments. In this report, the pollution load coefficients obtained from the guideline document of EIA. Network diagram: This method is based on determining the mutual relationship between the sources of impacts and the affected environmental factors. This relationship is presented by the principles of causes and effects. This method can determine the direct impacts (the primary one) and indirect impacts chain (the secondary one). This method is shown through a network diagram in different types. Public consultation - Sociological investigation: This method is used to investigate, update the information about the socio-economic development in 14 regions. Moreover, the method also aims at investigating and assessing impacts of the proposed Hoa Binh Tay Ha Noi 220kV transmission line and existing transmission line on the life of local people in the project area. It is necessary to directly discuss and interview the local officers and residents on the socioeconomic development, as well as introduce the benefits and the potential negative impacts of the project; then, collect the feedbacks on the project and the expectation of local people (if any). Comparing to environmental standards and regulations: This method is used to assess the environmental impacts of the project on the basis of comparison with the limits specified in the current Vietnamese environmental standards and regulations. Conjecture: This method is based on documents of previous projects and the activities of the project, the phenomenon and the similar incidents. It is also used to review preliminarily on the impacts on the natural environment and socio-economic siutation, etc 4. EIA IMPLEMENTATION EIA report is prepared by The Northern Power Projects Management Unit and consulted by the Institute of Energy. The main steps are: - Establishing working group and assigning tasks of making EIA report; - Researching and surveying the current status of project area: environmental conditions, local natural and economic - social conditions; INSTITUTE OF ENERGY (IE) 20

21 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE - Public consultation; - Developing thematic reports; - Preparing general reports; - Organizing workshops on consultation of experts, revising the reports; - Submitting to the competent authorities for the evaluation and approval of the reports. Brief information of consultancy unit Institute of Energy Ministry of Industry and Trade Address: No. 06, Ton That Tung Street, Dong Da district, Hanoi. Telephone: (04) Fax: (04) bbt@ievn.com.vn; website: Representative: Mr. Hoang Tien Dung; Position: Director of Institute of Energy List of members who make the assessment report of environmental impacts of project is shown in Table 0.3 as below: Table 0.3: List of members who make environmental impact assessment report NO. FULL NAME DEGREE OFFICE SPECIALITY A. Project owner: The Northern Vietnam Power Projects Management Board 1 Mr. Phan Luong Thien Engineer 2 Mr. Nguyen Huu Chanh Engineer 1 Mr. Vu Chi Cong Engineer 2 Mr. Doan Ngoc Duong Master 3 Ms. Nguyen Thi Thu Huyen Project owner, Director of PMB Project owner, expert of PMB B. Consultancy unit: Institute of Energy Engineer 4 Ms. Le Hoang Anh Engineer 5 Mr. Trinh Hoang Long Master 6 Mr. Pham Hung Master Center of Energy Consulting and Technology transfer - Institute of Energy Director of Consulting Center of Thermoelectricity, Nuclear Power and Environment Manager of Environment Department, Consulting Center of Thermoelectricity, Nuclear Power and Environment Institute of Energy Environment Department, Consulting Center of Thermoelectricity, Nuclear Power and Environment Institute of Energy Environment Department, Consulting Center of Thermoelectricity, Nuclear Power and Environment Institute of Energy Key Laboratory for High Voltage, Institute of Energy Electricity Electricity Environment Thermoelectricity Environment Hydrography Environment Environment Electricity INSTITUTE OF ENERGY (IE) 21

22 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE 7 Mr. Tran Viet Son Master Key Laboratory for High Voltage, Institute of Energy Electricity Moreover, the report has been also made by environmental experts in many fields such as waste water, solid waste, emission, ecological and environment economy, etc. During implementation process, we have received the cooperation and assistance of following agencies: 1. Ministry of Transport. 2. Ministry of National Defense. 3. Vietnam Electricity Group 4. Vietnam Inland Waterways Administration. 5. Communication Agency - General Department of Logistics & Technology Ministry of Public Security. 6. Staff Department - Communications Command. 7. Institute of Energy Ministry of Industry and Trade. 8. National Power Transmission Corporation. 9. Power Engineering Consulting Joint Stock Company Power Engineering Consulting Joint Stock Company People s Committee of Hoa Binh province. 12. People s Committee of Hanoi City. 13. Hanoi Department of Planning and Architecture. 14. Hanoi Police. 15. People s Committee of Chuong My district Hanoi City. 16. People s Committee of Quoc Oai district Hanoi City. 17. People s Committee, Fatherland Front Committee of the Tan Thinh precinct Hoa Binh tower Hoa Binh province. 18. People s Committee, Fatherland Front Committee of the Tan Hoa precinct Hoa Binh tower Hoa Binh province. 19. People s Committee, Fatherland Front Committee of the Huu Nghi precinct Hoa Binh tower Hoa Binh province. 20. People s Committee, Fatherland Front Committee of Yen Mong town Hoa Binh tower Hoa Binh province. 21. People s Committee, Fatherland Front Committee of Hòa Sơn Luong Son district Hoa Binh province. 22. People s Committee, Fatherland Front Committee of Lam Son town Luong Son district Hoa Binh province. INSTITUTE OF ENERGY (IE) 22

23 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE 23. People s Committee, Fatherland Front Committee of Luong Son town Luong Son district Hoa Binh province. 24. People s Committee, Fatherland Front Committee of Dan Hoa town Ky Son district Hoa Binh province. 25. People s Committee, Fatherland Front Committee of Dan Ha town Ky Son district Hoa Binh province. 26. People s Committee, Fatherland Front Committee of Mong Hoa town Ky Son district Hoa Binh province. 27. People s Committee, Fatherland Front Committee of Ky Son town Ky Son district Hoa Binh province. 28. People s Committee, Fatherland Front Committee of Dong Yen commune Quoc Oai district Hanoi City. 29. People s Committee, Fatherland Front Committee of Can Huu commune Quoc Oai district Hanoi City. 30. People s Committee, Fatherland Front Committee of Dong Quang commune Quoc Oai district Hanoi City. 31. Local people of the above areas. INSTITUTE OF ENERGY (IE) 23

24 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE CHAPTER 1: SUMMARY OF PROJECT DESCRIPTION 1.1 Project name Investment project is Hoa Binh Tay Ha Noi 220kV transmission line 1.2 Project owner Project owner: The Northern Vietnam Power Projects Management Board PMB Director: Mr. Phan Luong Thien Address: 1111D, Hong Ha Street, Hoan Kiem district, Hanoi Telephone: Fax: Geographical position of project Hoa Binh Tay Ha Noi 220kV transmission line crosses over 2 provinces: Hoa Binh and Hanoi. The details are given as follows: - Hoa Binh province: Hoa Binh tower, Ky Son district, Luong Son district. - Hanoi: Quoc Oai district. Position coordinates of project are shown in Table 1.1 Table 1.1: Position coordinate of project No. Turning Height of Coordinate angle tower N E 1 DD G G G G G G G G G G G G G G G G G G G G G G G G G G G INSTITUTE OF ENERGY (IE) 24

25 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE No. Turning angle Height of tower N Coordinate 29 G G G G G G G G G G G G G Source: Description of project Hoa Binh Tay Ha Noi transmission line has main characteristics as follows: - Start point: 220kV busbar at Hoa Binh Hydropower Plant 220kV switchyard; - End point: 220kV busbar at Tay Ha Noi 220kV substation, Quoc Oai district, Hanoi city; - The proposed length of the line: 50,6 km; - Location: going through Hoa Binh tower, Ky Son and Luong Son district (Hoa Binh province), Quoc Oai district (Hanoi City); - Long span: getting over Da River; - Crossing to highway: 1 time (Highway No.21) - Main terrain condition: + Section going through Hoa Binh province: Main terrain is low hills and mountains; + Section going through Hanoi City: Main terrain is low hills and mountains; - The number of the affected houses: 65. a. For section across Hoa Binh province: 39,8km in length a.1. Transmission line from Hoa Binh 220kV switchyard to G13 (length of 9,2 km) Solution for transmission line from Hoa Binh 220kV switchyard to G13: between two 220kV transmission lines: Hoa Binh Viet Tri 220kV transmission line (1 circuit) and Hoa Binh Xuan Mai Chem 220kV transmission line (2 circuits). Advantages The transmission line is between two existing 220kV transmission lines. So, there is no effect to the development plan of local areas; moreover, it also saves power corridor. This is a favorable terrain condition for the construction, installation, operation, maintenance and incidents repair. Disadvantages Improve and move three 220kV feeders of Viet Tri and Nho Quan substation and communication feeder of Hoa Binh 220kV switchyard. E INSTITUTE OF ENERGY (IE) 25

26 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE Advantages The route which is located between two existing 220kV voltage lines has absolutely no effect to the planned development of the area and saves power line corridor. The terrain is favorable for the construction, installment, operation, maintenance and repair in case of incidents. Disadvantages It is necessary to renovate and move three 220kV voltage routes in Viet Tri, Nho Quan and disconnect the communication with 220kV Hoa Binh INSTITUTE OF ENERGY (IE) 26

27 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE substation. Figure 1.1: The proposed line going through Da River a.2. The section from G9A to G9B intersects with 220kV Hoa Binh Viet Tri tranmission line INSTITUTE OF ENERGY (IE) 27

28 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE The tranmission line G9A G9B (as shown in the Figure: the Distance between 220kV Hoa Binh Viet Tri line and 220kV Hoa Binh Xuan Mai Chem line is 27m long, which is not enough for the 220kV Hoa Binh Tay Hanoi tranmission line to get in between. As a result, the choice of planting two 4-circuit pylons along with the 220kV Hoa Binh Viet Tri is highly preferred. The 220kV line from Hoa Binh hydropower plant to Ha Dong, Xuan Mai and Chem are the main power source for Hanoi area and always in the full loaded condition. Therefore, the solutions of electricity cutoff for the 220kV Hoa Binh Xuan Mai Chem will critically affect the electricity supply ability for Hanoi area. On the other hand, 220kV Viet Tri substation in the period is electrically supplied not only from Hoa Binh hydropower plant but also from other sources such as 550kV Son La hydropower plant and 500kV Hiep Hoa substation. For that reason, the electricity cutoff for for the execution of connecting tranmission lines of 220kV Hoa Binh Viet Tri wil have little effect to the operation of 220kV Viet Tri substation. a.3. The lines crossing Da river Proposed line: The line from G12 G13 G14. (Figure 1.2) Figure 1.2: The proposed line for the part across Da river Comment: The Proposal No.1 is a plan which only cuts through one residential house. The proposed route is near the road, which is favourable for the construction and future operation. The Proposal No.2, as a preliminary survey, is a plan which cuts through a large number of residental houses along the road and Da River. In addition, the route G14-G17 is located on the moutainous area which may be inconvenient for the construction and future operation. -> The Proposal No.1 is selected. a.4. The line from G17 to G21 The proposed line goes straight from G17 to the middle of G20 G21 which aims to reduce the length and the number of steering angle of the line, serving as an alternatives to the chosen proposed line. INSTITUTE OF ENERGY (IE) 28

29 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE Figure 1.3: The line from G17 to G21 Table 1.2: The Proposed line from G17 to G21 No Criteria Chosen proposal 1 Length 4.41km 2 Number of steering angle 3 3 No of house crossed 1 4 Other construction 0 5 Plants Acacia + Eucalyptus (Gum Tree) Conclusion The chosen proposed line crosses over ferwer residential houses (17 houses), which is more convinient for the compensation and site clearance. a.5. The line from G21 to G30 INSTITUTE OF ENERGY (IE) 29

30 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE Figure 1.4: The proposed line from G21 to G30 INSTITUTE OF ENERGY (IE) 30

31 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE a.6. The line passing across Xuan Mai area Figure 1.5: The line passing through Xuan Mai area The line from G12 to G30 basically runs in parallel with the two available 220kV Hoa Binh Ha Dong and Hoa Binh Xuan Mai Chem. In particular, the line passing through Xuan Mai (7 km long from G30 to G35) will be wholy adjusted to avoid the military areas, which are located under the 220kV Hoa Binh Xuan Mai Chem line. Consequently, according to the chosen proposal, the line goes up at G30to the hilly terrain to avoid the military areas, pagodas and residential areas to the maximum, then passes the 220kV Xuan Mai line to G35. From G35, the line continues run in parralel with the existing 220kV Hoa Binh Xuan Mai- Chem. b. The section passing through Hanoi The line is 10.8km long from G36 to 220kV Tay Hanoi substation. Hanoi Construction Planning Institute studied and created a direction introduction for this section line and the Hanoi People s Committee accepted in Document no. 8128/UBND-CT dated 29 September The Propsed line is shown in the Figure 1.6 below: INSTITUTE OF ENERGY (IE) 31

32 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE Figure 1.6: The proposed line in Quoc Oai, Hanoi See appendix for the general map showing the current state of the overall project area INSTITUTE OF ENERGY (IE) 32

33 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE 1.4. The main content of the project The objective of the project The construction of 220kV Hoa Binh Tay Hanoi tranmission line aims at: The 220kV Hoa Binh Tay Ha Noi is constructed the serve as the main electricity supply for the electric distribution grids to the west of Hanoi. The construction of 220kV Hoa Binh Tay Ha Noi will improve the the voltage quality, reduce the power loss in the electric distribution grids in the area. In addition, the construction also contributes to the enhancement of the ability to provide stable electricity tranmission system in Hanoi and in the regions as well as the reduction in the electric load for other 220kV tranmission lines from Hoa Binh to Ha Dong, Xuan Mai. The construction of 220kV Hoa Binh Tay Ha Noi will operate in sync with 220kV Tay Ha Noi substation by the year The scale of the project The construction of 220kV Hoa Binh Tay Ha Noi tranmission line is executed with the scale and technical features as follows: Công trình Đường dây 220kV Hòa Bình Tây Hà Nội được xây dựng với quy mô và đặc điểm kỹ thuật như sau: Voltage: 220kV Number of circuits: 2 cuicuits, 4 circuits. Total length: 50.6 km The location of the line: the 220kV line passes through 14 communes in the area of Hoa Binh city, Ky Son district, Luong Son district, Hoa Binh district, Quoc Oai district and Hanoi city. Electric conductors: Aluminum Conductors Steel Reinforced ACSR wire 2 x 330/43. The electric conductor for the section passing through Da river is Aluminum Alloy Conductor Steel Reinforced AACSR 2 x 380/50 Lightning resistance cable: 2 types of lightning resistance cable including normal PHLOX 116 and optical lightning resistance combined with fiber cable OPGW 120, 24 fiber cables. In particular, the starting line of 3km long from SPP Hoa Binh will add another resistance cable PHLOX 116. Insulation: use insulation types match with suitable electric capacity, insulated by ceramic, glass or composite, the number of insulated points is determined on the basis of contaminated areas with the length of leakage line of 25mm, 20mm/kV. The technical features are similar to other type of insulation such as U70B, U120B, U160B, U210B, U300B, according IEC standard. Pylon: Freestanding, galvanized steel pylon in pyramid shape with 4 circuits and 2 circuits. The section passing through Da river uses 72m long pylon. Foundation: Steel Reinforced Concrete cyclinder foundation, buoyant foundation casted in place, the section passing through Da river use buoyant foundation. Grounding: Ray type, galvanized steel. Stabilization for wires and lightning resistance cable The extensions for 220kV Hoa Binh Hydropower Plant route: proceeded by Hoa Binh Hydropower Company assigned by EVN as in Document number 877/EVN-KH dated 22 March Construction items Main construction items a. Tranmission lines: INSTITUTE OF ENERGY (IE) 33

34 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE The 220kV Hoa Binh Tay Ha Noi tranmission line has the total length of 50.6 km. The beginning of the line is Pooctich 220kV of 220kV Hoa Binh substation and the endpoint is Pooctich 220kV Tay Ha Noi substation. The tranmission line is described in details as follows: Table 1.3: Summary of features of the transmission line Source: Project notes No Sections Lengths Features 1 From 220kV Hoa Binh substation to ĐĐ 45m 2 From ĐĐ -:- G m 3 From G1 -:- G m 4 From G2 -:- G m 5 From G3 -:-G m 6 From G4 -:-G m 7 From G5 -:- G m 8 From G6 -:- G m 9 From G7 -:- G m 10 From G8 -:- G9A 598.9m The first section of tranmission line connects to an existing pylon of 220kV Hoa Binh Viet Tri. At the T = The line cuts across the texture road, cuts tranmission line 6kV to the acacia hill. G1 is located on the acacia hill in the area of Huu Nghi ward and P = The line cuts across the tranmission line 0.4kV twice, the concrete road and orchards twice, and cuts through 06 residential houses in Huu Nghi ward. G2 is located on the hill and has the right P = The line cuts across the concrete inter-village roads, 2 residential houses in Tan Thanh ward and goes up to the complex-tree hill. And has the right steering P = The line cuts through a high steep cliffs, through the bamboo hill to the complex-tree hill. G4 is located in the complex-tree hill and has the right steering P = The line goes up to the complex-tree hill and acacia hill. G5 is located on the acacia hill and has the P = The line cuts through concrete road and soil road. The line cuts through 22kV, 35kV tranmission line, cuts through 110kV twice and springs once. The line also cuts through 3 residential houses and 2 other ones located in the line corridor, through a kindergarten and goes uphill. G6 is located on the hill and has a left steering angle of T = The line cuts across high mountains. G7 is located - T = The line cuts through texture road to Tu Ly, cuts concrete roads and goes uphill to the complex-tree hill and cuts through residential houses thrice. G8 is = The line cuts through the complex-tree hill across a deep gulch to near the Pylon 13 of 220kV Hoa Binh Viet Tri tranmission line (G9A). At this place plant a 4-circuit pylon along with 220kV Hoa Binh INSTITUTE OF ENERGY (IE) 34 T

35 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE No Sections Lengths Features Viet Tri tranmission line. G9A has a right steering P = From G9A -:- G9B 138.8m 12 From G9B -:- G m 13 From G10 -:- G m 14 From G11 -:- G m 15 From G12 -:- G m 16 From G13 -:- G m 17 From G14 -:- G m 18 From G15 -:- G m 19 From G16 -:- G m 20 From G17 -:- G m 21 From G18 -:- G m The line cuts through a gulch near pylon 14 of 220kV Hoa Binh Viet Tri tranmission line (G9B), at which planted a 4-circuit pylon sharing 220kV Hoa Binh Viet Tri tranmission line. G9B has a left T = The line cuts through the gulch and goes up to the complex-tree hill. G10 is located on the hill and has T = The line runs on the complex-tree hill and acacia hill, cuts concrete road, cuts the 0.4kV tranmission line to the acacia hill. G11 is located on the hill and P = The line runs on the acicia hill. G12 is located on P = The line running on the acacia hill cuts through deep gulch and goes up to a small acacia hill. G13 is located on the hill and has a right steering angle of P = The line cuts the texture road to Yen Mong, cuts 0.4kV line once and the communication line once, cuts 6kV line once, cuts through Da River, cuts 35kV line once and goes down to the field nearby the river. G14 is located on the field and has a left steering angle of T = The line runs on the field, then cuts through the texture road and goes up to the hill of acacia and bamboo. The line cuts the communication line twice, cuts a trench once. G15 is located on the bamboo hillsi = The line goes along the acacia hillside, cuts through a freshwater lake and a tent once. G16 is located on = The line continues running along the acacia hillside. The terrain varies significantly, with a number of steep sloop. G17 is located on the acacia hillside and P = The line cuts through a small hill s peak, crosses the valley and goes up the the acacia hill. G18 is located on the peak of the hill and has a left steering angle T = The line cuts through a small hillside, passes through the area of Ba Hamlet of Mong Hoa commune. Then the line cuts across the peak of INSTITUTE OF ENERGY (IE) 35 P T

36 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE No Sections Lengths Features acacia hill and goes down to G19 which is located on the hillside near the texture road. G19 has a right P = From G19 -:- G m The line cuts through the area which is under construction of the highway project Hoa Lac Ha Binh, cuts through the texture road, electric line systems 0.4 and 25kV. After passing the rice field, the line goes up to the high hill to G20. G20 is located on the cassava hillside and has a left steering angle of T = From G20 -:- G m The line runs on on the complex-tree hillside with steep terrain and relatively strong variance in terrain types. G21 is located on the hillside and has a left T = From G21 -:- G m The line cuts through valleys and acacia hillside. G22 is located on the peak of a complex-tree hill and has a right steering angle of P = From G22 -:- G m The line started from the complex-tree hill runs through the concrete road into the Thang Thien Waterfall ecotourism, cuts through a deep gulch and goes up to the complex-tree hill. G23 is located on the hill and has a right steering angle of P = From G23 -:- G m The line mainly runs on the complex-tree hills and acacia hills of Dan Hoa and Lam Son communes. G24 is located on the complex-tree hill and has a left steering angle of T = From G24 -:- G m The line runs from a complex-tree hill up to high rocky hill. G25 is located on the hill and has a right steering angle of P = From G25 -:- G m The line runs from the high rocky hill to short rocky hill. G26 is located on the hill and has a left steering angle of T = From G26 -:- G m The line started from the rocky hill cuts through deep gulch and soil road twice. G27 is located on a complex-tree hill and has a right steering angle of P = From G27 -:- G m The line mainly runs on the complex-tree hill with many lemon grass plants, acacia tree and banana plants. G28 is located on the lemon grass hill and has a left steering angle of T = From G28 -:- G m The line mainly runs through the complex-tree hill with many lemon grass plants and acacia trees. The line cuts through 3 residential houses on the line corridor. G29 is located on the lemon grass hill and has a left steering angle of T = From G29 -:- G m The line runs on the hill with many lemon grass plants and acacia trees, cuts though texture road and INSTITUTE OF ENERGY (IE) 36

37 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE No Sections Lengths Features minitary barracks. G30 is located on the acacia hill and has a left steering angle of T = From G30 -:- G m The line runs from the acacia hill, cuts the intervillage concrete road 5 times, cuts rocky road, cuts the 0.4kV line thrice and the 35/0.4kV substation once, cuts through ponds and lakes 5 times and 5 residential houses. G31 is located on the rocky acacia hill and has a right steering angle of P = From G31 -:- G m The line mainly runs on the acacia hill and the complex-tree hill, cuts through inter-village concrete road once, cuts soil road twice, cuts rocky road once, cuts 0.4kV tranmission line once and 35kV tranmission line once, and cuts 3 residential houses on the corridor. G32 is located on the acacia hill and has a right steering angle of P = From G32 -:- G m The line mainly runs on the acacia hill, complextree hill and tea hill, cuts through soil road once, 110kV tranmission line once, 220kV line once and there is 1 residential house on the line corridor. G33 is located on the complex-tree hill and has a right steering angle of P = From G33 -:- G m The line mainly runs on the acacia hill, complextree hill, tea hill and fruit tree hill, cuts rocky road once, 0.4kV line once, and 11 residential houses which are located on the line corridor are cut by the line. G34 is located on the tree nursery and has a left steering angle of T = From G34 -:- G m The line mainly runs on the acacia hill, complextree hill, tea hill and fruit tree hill and runs on the tree nursery of Vietnam Forestry University, cuts through the concrete road once, cuts soil road once, cuts 10kV line once and 6 residential houses which lies in the line corridor are cut by the line. G35 is located on the tree hill of Vietnam Forestry University. G35 has the left steering angle of T = From G35 -:- G m The line runs in the tree nursery of Vietnam Forestry University, cuts through concrete road twice, cuts rocky road once, cuts texture road once in the Forestry University s park, cuts the Ho Chi Minh road once, cuts the 220kV line once at the 220kV Xuan Mai substation, cuts the 35kV line once and the 0.4kV four times. The line cuts through 4 residential houses which lies in the line corridor and passes through the one-crop fish pond and rice field area once, cuts ponds twice. G36 is located in the rice field and has a left steering angle INSTITUTE OF ENERGY (IE) 37

38 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE No Sections Lengths Features of T = From G36 -:- G m The line runs along the rice fields and cuts 2 small ponds, cuts through concrete road and trench once. G37 is located on the rice field and has a right steering angle of P = From G37 -:- G m The line runs through the one-crop field area and fish pond in the middle of Dong Thuong and Dong Ha hamlet of Dong Yen Quoc Oai commune. The line cuts through the tent near the fish-pond of Ms. Thu, cuts the 10kV line twice and 0.4kV line twice, cuts through the communication line. The line passes through Con river and the fish pond area to reach G38. G38 is located on the field and has a left steering angle of T = From G38 -:- G m The line cuts through a high dike which is of the channel system of the fields in Can Huu commune. The line cuts through 10kV line and communication line once. G39 is located on the rice field near the trench and has a right steering angle of P = From G39 -:- G m The line continues to runs on the rice fields of Can Huu commune and Dong Quang commune, cuts through the fish pond system and Poultry farm. The line cuts through the 35kV line twice, cuts 10kV line once and the communication line once. G40 is located on the rice field and has a right steering angle of P = G40 -:- NC 345.6m The line runs on the rice field and crosses the high trench to reach the point NC of 220kV Tay Ha Noi substation. Reconnected 220kV Hoa Binh Viet Tri transmission line 44 From Pooctich to ĐĐ 45.0m Line started from 220kV Hoa Binh substation to NC pylon outside of the substation s fence. The line at NC has the steering angle of P = From ĐĐ to pylon 2 of 220kV Hoa Binh Viet Tri line 235.3m The line cuts through the texture road once, cuts 6kV line once, cuts fruit tree farm and goes up to the acacia hill. The line at pylon 2 has the right steering angle of P = The section which 220kV Hoa Binh Viet Tri line shares 4 circuits with 220kV Hoa Binh Tay Ha Noi tranmission line 46 From pylon kV Hoa Binh Viet Tri 603.4m The line started from the complex-tree hill cuts through the deep gulch near pylon 13 of 220kV Hoa Binh Viet Tri tranmission line (G9A) at which INSTITUTE OF ENERGY (IE) 38

39 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE No Sections Lengths Features tranmission line planted a 4-circuit pylon sharing with 220kV Hoa G9A Binh Tay Ha Noi tranmission line. The line at 47 From G9A G9B 138.8m 48 From G9B Pylon 15 of 220kV Hoa Binh Viet Tri tranmission line m G9A has a right steering angle of P = The line cuts through a deep gulch near pylon 14 of 220kV Hoa Binh Viet Tri tranmission line (G9B) at which planted a 4-circuit pylon sharing with 220kV Hoa Binh Hoai Duc tranmission line. The line at G9B has a left steering angle of T = The line cuts through the gulch and goes up the complex-tree hill and reaches pylon 15 of 220kV Hoa Binh Viet Tri tranmission line. At this point the line returns the old line going to Viet Tri. Table 1.4: Statistics of the tranmission line No. Statistic criteria Figures 1 Number of Angle (G) 41 angles 2 Number of crosses with other tranmission and 47 times communication lines 3 Number of crosses with trenches and springs 58 times 4 Number of crosses with small roads 54 times 5 Number of crosses with national roads (National road No. 01 times 21) 6 Number of affected residential houses 65 houses INSTITUTE OF ENERGY (IE) 39

40 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE b. Construction quantities Table 1.5: Number of column needed to be assemplied No Column type Unit Quantity 1 Steel column D222-35A Column 21 2 Steel column D222-35B Column 12 3 Steel column D222-35C Column 10 4 Steel column D222-38A Column 3 5 Steel column D222-38B Column 2 6 Steel column D222-38C Column 3 7 Steel column A Column 7 8 Steel column D222-43B Column 2 9 Steel column D222-46A Column 7 10 Steel column D222-46C Column 1 11 Steel column D222-50B Column Steel anchor post N222-37A Post Steel anchor post N222-37B Post 9 14 Steel anchor post N222-37C Post 2 15 Steel anchor post N222-47A Post 5 16 Steel anchor post N222-47B Post 3 17 Steel anchor post N222-47C Post 1 18 Steel anchor post N222-52A Post 1 19 Steel anchor post N222-62A Post 2 20 Steel anchor post N222-62C Post 1 21 Steel anchor post N Post 2 22 Steel friction pile H Pile 2 23 Column V Column 1 Total 129 Table 1.6: Number of foundations needed to be constructed. No Foundation type Number Excavated Concrete Volume (m 3 ) Volume (m 3 ) 1 Foundation 4T column 35A Foundation 4T Column 38A Foundation 4T Column 35B Foundation 4T Column 43A Foundation 4T Column 46A Foundation 4T Column 35C Foundation 4T Column 38C Foundation 4T Column 43B INSTITUTE OF ENERGY (IE) 40

41 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE No Foundation type Number Excavated Concrete Volume (m 3 ) Volume (m 3 ) 9 Foundation 4T Column 46C Foundation 4T Column 50B Foundation 4T Column 50B Foundation 4T Anchor post 37A Foundation 4T Anchor post 47A Foundation 4T Anchor post 47B Foundation 4T Anchor post Foundation 4T Anchor post 62A Foundation 4T Anchor post 37B Foundation 4T Anchor post 37C Foundation 4T Anchor post 47C Foundation 4T Anchor post 62C Foundation 4T Anchor post H Buoyant Foundation MB5.7-12x Buoyant Foundation MB x Buoyant Foundation MB8.2-20x Buoyant Foundation MB10-18x Total Table 1.7: Volumn of main construction No Construction work Unit Volumn 1 Foundation excavation m 3 of soil Foundation leveling m 3 of soil Steel pile processing T Concrete M100 m Concrete M200 m Foundation bolts T Grounding T Steel column T Electric conductor ACSR 330/43 T Electric conductor AACSR-380/50 T Lightning resistant cable PHLOX 116 T Optical fiber Cable OPGW 120 T Conductor wire anchor chain Chain Conductor wire support chain Chain Lightning resistant cable anchor set Set Lightning resistant cable support set Set 161 INSTITUTE OF ENERGY (IE) 41

42 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE Secondary construction works Temporary camps In fact, the investor will require the construction unit to rent available local housing to ensure the construction schedule, reduce unnecessary expenses, and comply with the environmental protection requirements. Warehouses: The construction time is 12 months long, so to ensure the quality of the construction materials used for construction, three main types of warehouses will be designed. The warehouses are located in the construction management unit and then will be coordinated to each specific construction site. + Tight Warehouse: Used to contain cement and other electricity materials. The warehouse is made of thatch and bamboo surrounded with covers, the ground is leveled up to avoid moisture; used during time of construction + Open warehouse: Used to contain formwork and reinforced steel which have been processed and have minor repairs. The warehouse is made of bamboo and is sheltered but has no walls. + Warehouse: Used to store steels, wires, porcelain materials. The warehouse is also used to store, process formworks and repair and process reinforcement steel. Warehouse area is calculated according to the standard TCXD 50/72 UBXDCB Electricity and water supply for construction The water source for construction mainly relies on rivers, streams and other water sources of the people living along the line. For the area that is far from water source or the water is contaminated, the water will be manually transported to each location column (the detailed volume will be confirmed at the specific sites). Drinking water taken from the water sources of local people will help reducing the impact on the environment. Electricity supply for construction and other activities is from the diesel generator or existing local electricity distribution grid. Temporary construction road The transportation of materials, equipment, construction materials to the foundation location is primarily based on the existing roads and trails of local people. At the same time, it is also necessary to simultaneously reinforce and construct temporary construction road. Transporting Long distance transport and transit by road and river to the materials yard; Short distance transport by hand combined with enhanced vehicles, boats and barges. The manual transport distance is at the average of 370m long. Construction materials for the column and anchor post are transported by barges. Some materials such as steel columns, wires of all types, insulation, fittings, etc. will be transferred from the warehouse of the construction management unit to the construction site (before manually transport to the specific sites). The materials from the warehouses of the construction sites located along the proposed line will be transported to the assembly point by trucks on the existing roads, mainly on the provincial highways with an average distance of 6 km. For materials bought from the local such as cements, sands, stones, woods etc. depending on the price specified in the construction announcement of each districts and provinces that the transmission line runs through, the shipping fees to the construction sites might be charges (89/BVGCP fees) The method of transportation of construction materials and equipment from the temporary construction sites, warehouses to the destined construction sites by local roads. The transportation is conducted with allowed transportation volume and reasonable time in order to reduce the impact on the people living nearby. In some cases that the internal road cannot be used, the INSTITUTE OF ENERGY (IE) 42

43 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE construction unit will construct temporary roads to transport and after then returning the area to its original condition for the local. Optic cable on the line To support the information connection between the distributors 220kV Hoa Binh substations 220kV and 220kV Tay Ha Noi substation, the solution is to use optical cables combined with lightning resistant conductor (OPGW - Optical Ground Wire). Optical fibers are used in single mode which satisfies all the standard requirements of ITU-T/G652. All optic fiber cables must be perfectly smooth and meet the requirements for optical, mechanical and other requirements concerning environmental protection. Optical fibers are protected by a protective coating made of composite (CPC). The coating consists of 02 layers of protection which protect against ultraviolet rays, and each of these layers has different elasticity index. The inner layer is usually softer than the outer layer. This structure helps protect optical fibers from vibration and attenuator at the inflection point Information system Provide optical cable information on the 220kV line, ensuring compliance with the telecommunications information construction. Clearance and resettlement The line corridor Referring to Article 4 of Decree 106/2005/NĐ-CP and the design, the corridor for safe protection of the 220kV electricity transmission lines has a width of 22m (The length from the center of the line to each side is 11m). The total area of the safety corridor along the lines: 50,667m x 22m = 1,114,938m2. Lands, crops, trees The land used for the construction of the transmission line includes two types: Land area taken to build the columns. The area affected under the provisions of the safety corridors of high-voltage lines. The area affected in the average corridor is 167,595m2. Land area taken permanently for the construction of foundation, column: 22,873.1 m2 Land area taken for the plantation of columns which are located in the mentioned affected area. Houses The houses which lie in the corridor will be treated in accordance with Decree 81/2009/ND-CP dated 12/10/2009 on the amending and supplementing of a number of articles in Decree No.106/2005/ND-CP dated 17/08/2005 issued by the Government on detailed regulations and guidelines for implementation of some articles of the Electricity Law on the safety protection of high-voltage grids. According to the survey report, the number of houses in the line corridor is 65 houses, which has the main structure as follows: tiled roof or metal sheet roof, paneled wall or built wall, tile and panel floor. Allow the existence of houses and buildings which satisfies the following conditions: The roofs and walls are made of non-combustible materials; The metallic structure of the houses, building has been grounded in comply with the requirements for technical grounding; Do not obstruct the access for testing, maintaining, and replacing parts of the high-voltage grids; The vertical distance from any part of the house and the nearest electrical wires when the wire is in the maximum loosing state for 220kV level is no less than 6m. INSTITUTE OF ENERGY (IE) 43

44 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE The electric field intensity is less than or equal to 5kV/m at any point outside the houses which is 1m above the ground and less than or equal to 1 kv/m at any point inside the houses which are 1m above the ground. Houses and buildings which lie in the line corridor but do not meet the aforementioned requirements will be required to be relocated. The relocation will be compensated in accordance to the law Description of the construction methods of the works of the project Key Technology Solutions a. Selection of voltage, circuit number Pursuant to Decision No. 1208/QD-TTg dated 21/7/2011 of the Prime Minister on the approval of the development plan of Vietnam Electricity in the period with a perspective to 2030 and Decision No.4351/QD - BCT dated 29/08/2011 of the Ministry of Industry and Trade on the approval of the Hanoi power development Plan with a perspective to The voltage level of this construction is 220 kv level. To help reduce the load of the existing 220kV line which was overloaded from Hoa Binh to Ha Dong, Xuan Mai and Chem as well as to ensure the supply of power in a safe and reliable manner for Hanoi, the 220kV Hoa Binh Tay Ha Noi transmission line is the double-circuit line which supplies electricity for the Tay Hanoi station by 2-circuit line. b. Selection of electrical conductors The wire used for Hoa Binh Tay Ha Noi transmission line is the 2 phase distribution steel-core aluminum wire x ACSR 330/43. The mechanical parameters of conductor ACSR 330/43 are given in Table 1.9 Table 1.8: The technical features of the conductor ACSR 330/43 No Features Unit Value 1 Total cross section -Cross section of aluminum part - Cross section of steel part mm Outer diameter mm Volume kg/km Elastricity module dan/mm Thermal expansion coefficient 10-6 / o C Resistance of the wire at 20 o C /km Allowable tensile stress dan/mm Volume of grease kg/km 57 9 Wire length m > 2000 Source: Project notes The electric conductors is calculated according to allowable stress methods. Allowable stress in conductor at the critical regime is always taken at less than 45% of the tensile stress. Allowable stress in the average temperature regime is taken at 25 % the tensile stresses in accordance with current norms as follows : - Lowest temperature mode : 1 = 11.1daN/mm 2 ; - Largest external load mode ( Qmax ) : b = 11.1daN/mm 2 ; - - Average annual temperature mode : tb = 6.9 dan/mm 2. c. Selection of lightning resistant cables: INSTITUTE OF ENERGY (IE) 44

45 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE The 220kV Hoa Binh Tay Ha Noi uses 2 types of lightning resistant cables: 1 normal cable, 1 cable with optical fiber OPGW core to combine and serve the communications of information. The lightning resistant cable the the cable incorporated with optical fiber are selected on the basis of ensuring mechanical strength and thermal stability while ensuring there is an 1-phase short circuit. To ensure economics and techniques in selecting the section of the lightning resistant cable, the project uses lightning resistant cable (two 116 Phlox wires, one OPGW 120 wire) for the first 03km section of Hoa Binh Hydropower Plant and lightning resistant cable (one 116 Phlox wire and one OPGW 120 wire) for the remaining sections Construction methods a. Methods of structural columns The 220kV Hoa Binh West Hanoi transmission line uses diagram of 2 circuited and 4 circuited columns; with 2 pyramid-shaped lightning resistant cables made of steel and assembled with bolts. This is the type of steel column that is shaped in height and size. The diagrams of columns are tested in the insulation gap in different working modes of the line: - Ensure the phased distance between pylons following lines voltages, sagging wires and length of insulation strings. - Ensure the distance between the insulators on poles carrying power and grounding part in all working modes. - Ensure the distance between the circuits under different voltage levels. - Ensure safe conditions for maintaining people to climb up the pylons under voltage. - Ensure that lightning protection angles for all the insulating wires smaller than the regulations. - Ensure the safety corridor of small lines, and used land area for poles foundation is small. * The procedure of building pylons Steel pylons are transported into position and are mounted by using cranes combining with hand-assembling. For locations with convenient space construction crane can be used; while chained pulley will be used in complex and narrow terrain. Before setting pylons, the following items need to be inspected: - Consider checking foundation, measuring the size and position of the foundation bolts at the feet of the pylons for deviations from original designs; checking threads of the bolts, and if the bolts are easily screwed in and out. - Review quality control in column assembly, welding quality and the level the bolts are tightened; make sure to break the bolts threads to prevent unmounts,... straighten the pylons if bended. The technical options used in building pylons concern the bearing capacity of the pylons; and the structural details of construction, according to the construction force, to ensure safety during construction, and to make sure the pylons are not damaged or deformed. The pylons set on concrete foundations are fixed firmly with bolts on pylons feet, nuts and bolts are properly tightened, and the threads are destroyed to prevent unmounts. During the construction procedure, the following requirements need to be ensured: - The bolts are tightened and tested with forced wrench according to regulations. - The bolts on feet section of the pylons are dead-threaded to prevent theft When the installations are completed, inspecting horizontal and vertical tilt as prescribed. b. Method of foundation structure: Based on the geological conditions of the project s area, select the primarily based foundation solutions; including a number of locations where the foundations neck needs to be INSTITUTE OF ENERGY (IE) 45

46 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE heightened, to ensure the avoidance of basement flooding at the feet of the pylons; and use stone revetment to protect the pylons feet. * The protective solution for pylons foundation For some positions which are located on steep slopes, 0.00 core is taken from the average elevation of the natural ground and the two lower foundation positions. Additionally, protecting the riprap embankment foundation on low topography, and drainage ditches built on the high terrain to manage flow direction of the water away from the foundation area. Positions which are located in wetlands are treated by enhancing cylindrical foundation, as well as adding stone revetment embankment around pylons feet. * Foundation works: - Excavation by hand; - Molds, shuttering, reinforcement phases are produced in factory, assembled at the scene; - Steel and reinforced concrete work at site; - Concrete is mixed on-site and in-situ machine. Earthworks and embankment comply with current regulations. The open slopes depend on level of the ground and the depth of the foundation, as construction cost estimates for the construction and installation of specialized power transmission lines under Decision No.6061/QD-BCT dated 14/11/2008 by Ministry of Industry and Trade. c. Concrete work Comply with construction norms and ISO - acceptance After checking the preparation of aggregation : cement, water, sand, rocks, mixing area, construction equipment, measuring instruments and rain-proof vehicles... Finally, testing techniques such as formwork, gabari, foundation bolts, horizontal and vertical dimensions, elevation... if it shall be deemed as sufficient, concrete works can be rolled out. Concrete is mixed by hand, dampened by machine. All concrete structures are stationed concrete, therefore full compliance processes and norms about stationed concrete making should be followed. Concrete mixtures are calculated and tested according to ISO standards. The number of samples used to determine the compressive strength of concrete will follow the standard of heavy - compressive strength test method ISO Notes in concrete construction: - Follow proper maintenance procedures of ISO norms for concrete works. - Mixing and maintenance water should be able to be used for eating and drinking. - Each structural concrete will be taken as test sample. The processing of reinforcing core steel, gabarit foundation and all kinds of foundation phases will be conducted in workshops on the field by welding, bending and cutting machines... pouring, dampening, maintaining will be done by hand at working position. d. Installation of equipments Before conducting the installation, equipments and accessories need to be carefully checked in: quantity, type, size, quality of storage, transportation, as well as technical specifications. In the process of checking if there are problems, report immediately to Owner (Committee A) and unit design for consulting settlement. All components, transportation equipments to the field need to be stored in dry condition, and ensure interlevation. Assembly by motors combined with hand crafts. Installation should follow the design, and should ensure the safety of people and equipments. e. The installation of ceramic tiles and accessories: Insulator chains are mounted manually on air. Preparation of construction equipments such as pulleys, winches, cables. INSTITUTE OF ENERGY (IE) 46

47 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE Ceramics and accessories are thoroughly cleaned prior to installation. Construction unit test the accessories to check if ceramics are broken or cracked; also check the latch before pulling up bi installation. f. Fitting insulation string, strung scattered Insulator chains are mounted manually on air. The works to get deflection and cable tension spread in each anchor space are carried out by hand combined with motorized methods on allowed areas. In complex terrains, line stretching is conducted manually. The cross- sections over the highways, inter-village roads, inter-district, electric power lines, communication lines and segments crossing the river will be mentioned and location-specifically planned in the design and construction process; push through design and inform the relevant authorities in time, so that the construction process is not interrupted. For cross- sections with roads, power lines, communication, housing; firmly scaffolding to assist the line in the process of pulling wire rope. When stretching the line, make sure guyed pylons deflection reached does not alter the shape of the pylons. Also it is needed to symmetrically stretch the cords of each phase before proceed to the next phase. For pulling and stretching the lines across the river intervals, in the course of construction and stringing cords, unit of construction should pay utmost attention to ensure the implementation of pulling and stretching the cords, in accordance with procedures and rules, to ensure absolute safety for people and passing vehicles. Additionally, the construction company should contact the unit manager of the facility to conduct a monitoring plan or plan provisionally for cases of accidents happen. Unit of construction should plan construction methods of stringing across the river and should obtain the acceptance and close observation of construction observers when carrying out this process of pulling and stretching the lines. The river crossing stage while performing zipper should be conducted in the dry season. To pull the wire across the river, it is needed to contact the unit manager to unify construction methods, measures realm, construction progress and inform widely to all vessels prior to deployment. Allocate sufficient manpower and construction equipment to free traffic the most quickly. Construction units will coordinate with functional agencies in waterway and road management to implement the alerting process. g. Solutions for large span The 220kV line Hoa Binh - Hanoi West traverses the capital and Ky Son district of Hoa Binh. The Da River is the boundary between the city and Ky Son district of Hoa Binh. Thus, the 220kV lines - West Hanoi will pass the Da River. The plan for the river crossing sections were studied and selected from Mong Yen commune, Hoa Binh city and Ky Son town. g.1. The main technological solutions: * Choose the conductors and the height of pylons The plans were selected for the comparison include: Option 1: aluminum wire steel core ACSR 330/43; Option 2: aluminum alloy steel core wire AACSR 380/50. Lightning resistant cables used in span are of wires PHLOX 116 and OPGW Project selected aluminum alloy conductor steel core AACRS-280/50 for the span crossing the Da river. * Insulation and accessories : Insulation for the spans uses glass or ceramic insulators. The number of insulators in a chain care calculated by the length of the wire, which is calculated as 20mm/kV. The height of the pylons is 72m, which will be increased with 2 insulators per chain. * The safeguards Anti- vibration: put anti-vibration weights on conducting wires and lightning rods in the first two pylons. In large span, put two weights for stabilization. Lightning Protection and Grounding: The spans are equipped with 2 lightning rods placed in no more than 20-degree angle to protect against direct lightning strikes on the line. Lightning INSTITUTE OF ENERGY (IE) 47

48 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE rods are connected directly to the grounding system of the pylon. Earthing system will be strengthened to ensure the grounding resistance is 2 times less than the normal requirements. Warning signals on waterways: River Road are signaled according to current industry standards of the Ministry of Transport. g.2. The main building solutions The excessiveand braking pylons used for crossing span on the river, will use pyramidshaped pylons, galvanized zinc coated steel, and assembled with electrically welded bolts; the entire pylon is hot zinc coated. Particularly, for large span, many kinds of high strength steel will be increasingly used. For instance, type SS55 ( or equivalent) which have stability of 4000daN/cm2 to stress relief the pylons, and to save weight and to make it convenient in processing and manufacturing, subsequent erection. Based on these parameters on geological conditions, hydrology and location of works presented above, for large spans that requires great strength to ensure the safety of solution options for broading pylons foundation in large spans, such as: H222 and V (position 26, 27) and simultaneously heighten the foundation s cylinders and stone embankment of the pylons foundation. Position 25 of H pylon is placed on top of the hill to choose based foundation solutions. Foundation is casted by concrete marked B15, B7.5 concrete foundation primer, reinforcing group AI, AIII Demands for raw materials Supply of materials and equipment for line includes 2 kinds, inside and outside the country as follows: - Sands, stones, etc. : are taken from local sources and dealers Cements: are taken from local dealers Foundation reinforcement, earthing: bought from local dealers, self-produced in the workshop. Steel column, foundation bolts: are taken from Committee A s warehouse or local handcraft workshops. Wire, porcelain, accessories: Imported material, are taken from Committee A s warehouse. Table 1.9: Supplies of materials and equipment No. Name Source Receiver Transportation Volume(by Notes 1 Types reinforced steel foundation Local Field Trucks ton) (f 10 tons) 2 Galvanized steel Hanoi Electrical conductors, lightning rods Insulator chains, accessories of all kinds Domestic Production Domestic Production Hanoi ,76 Imported Hanoi ,72-6 PC 40 Cement Local Field Trucks - 7 Golden sand Local Field Trucks - Domestic Production Local materials 8 Stones INSTITUTE OF ENERGY (IE) 48

49 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE Source: Project Notes Machinery and equipment for the project To carry out the work on the field, force of vehicles and machines plays a very important role. The machinery for construction services includes new and old machines but machines are accredited following technical standards. Expected volume vehicles, machinery, construction equipment as follows: Table 1.10: Summarized table of major vehicles and equipment No. Name of construction vehicles Unit Quantity Status 1 Steel core transporter Unit % 2 Transport cars/trucks % 3 Ben trucks % 4 Fuel and Water tanked tucks % 5 Cranes % 6 Worker buses % 7 Cars Unit % 8 Ambulance % 9 Crawler tractors % 10 Bulldozers % 11 Concrete mixers % 12 Vibrators % 13 Broad dampers % 14 Electric welders % 15 Steel bending and cutting machines Unit 2 100% 16 Welding transformers % 17 Diesel generators % 18 Water pumps Unit 6 100% 19 Hydraulic Pressers % 20 Telephones % 21 Rollers % 22 Excavators, diggers % Total 67 Source: Project Notes Vehicles, machinery and construction equipment in the table can be replaced by vehicles, and other machinery with equivalent technical features Organization of the project - Project Management method is carried out through the attached project management. The agencies involved in the project as follows: - Investors Corporation National Power Transmission (NPT); - Project Management: Project Management Unit of the Northern Power NPT directly on behalf of the project manager; - Construction: Follow Investment Management Chartered existing building; - Receiving Operation Management: Power Transmission Corporation Process management and operation of electricity transmission systems 1. Power Transmission Corporation 1 is responsible for the operation of the electricity transmission system safety, and economic efficiency. 2. Power Transmission Corporation 1 is responsible for operational planning transmission system for years, months, weeks and days to the operation modes and hours to include: Plan and coordinate maintenance and repair of electrical equipment, electrical grid; INSTITUTE OF ENERGY (IE) 49

50 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE Security Assessment system includes electrical load forecasting, planning fuel supply from thermal power plants, hydrological forecasts from the hydroelectric plant, calculate the reserve power systems, plans to raise the source, mobilize and support services sack loads to ensure the power system security; Notify slowdown security system. 3. Power Transmission Corporation 1 planning, command mode operation and dispatching electricity to power plant operators and power grid managers within. 4. During operation of the power system, Power Transmission Corporation 1 will adhere to the following guidelines to maintain the safety and reliability of the electrical system: a) In operating warning mode, Power Transmission Corporation 1 will be announced on the official Web site of the electricity market status and warning information needs of this operation mode, while providing measures necessary to bring the system back to normal operating mode; b) In emergency operation mode, Power Transmission Corporation 1 will conduct the necessary measures to bring the power system back to normal operating mode the earliest; c) The load layoffs and cut off the electricity can be conducted only when there is a threat to human life and safety equipment, as more incidents occur simultaneously, while electrical transmission system operation operating in emergency mode or when extreme risk of declining electricity security of supply; d) The system automatically loads must be dismissed layout, installation to ensure proper electrical system does not disintegrate when the incident occurred; e) Develop methods to separate system into parts or to create loops when the incident spread can still balance the capacity of each region to maintain separate operating a power system components and prevent widespread incidents in the electrical system. In this case, the grid area have tried to conduct a quick recovery and safe; f) Calculate and ensure sufficient capacity for black boot to recovery after system crash disintegration Process maintenance and repair of power transmission systems 1. Power Transmission Corporation 1 is responsible for scheduling maintenance of electric transmission system includes a maintenance plan to fix the transmission grid and power sources connected to the transmission grid in service planning operate the transmission system in accordance with regulations. 2. Plan maintenance and repair electrical transmission system was established on the basis of operating schedules and registration maintenance plan to fix the grid must be calculated for the entire balance of the national power system according to the following principles: a) Ensure safe operation, stable, reliable and economic system; b) The balance of power source and the load and have enough reserve capacity, energy and ancillary services necessary for the operation mode of the national electricity system. 3. Power Transmission Corporation 1 planned maintenance and repair electrical transmission system and guidelines for power transmission unit. 4. Power Transmission Corporation 1 will evaluate the impact of planned maintenance and repair electrical grid 5. Planning grid maintenance and repair include: c) Schedule maintenance and repair of twelve (12) months; a) Maintenance repair the month, week or day; b) Planned maintenance and repair electric grid in two (02) years subsequent to assess the medium-term security systems. 6. Maintenance repairs twelve (12) months following must be established separately from maintenance and repair history month, week, day and must be notified to the relevant units of the INSTITUTE OF ENERGY (IE) 50

51 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE operating modes month, week, day. Plan maintenance and repair two (02) years following the orientation plan for assessing the medium-term security systems. 7. Time schedule maintenance and repair works must comply with regulations on the time mode of operation. 8. Maintenance repair include the following: d) Name of equipment maintenance and repair needs; e) Requirements and content maintenance and repair; f) Estimated time of start and completion of maintenance and repair work; g) other related equipment; 9. Vietnam Electricity Group is responsible for the formulation of planning grid maintenance and repair works Electricity Regulatory Bureau issued Implementation progress and human As stated above, the project is expected to 220kV Hoa Binh - Hanoi West construction within 12 months, with a total length of 50.6 km including 129 positions piles, need work unit construction company specialized in construction line are organized into independent roadworks. Organization of the project : The investor responsible for the procurement organization works. Construction and installation forces including teams specialized construction lines (each team constructed a stage, each team averages about people) The staff of 01 professional construction teams line includes: - Direct production: people - Indirect manufacturing: 5 people - Steering committee on the field: 1-2 Construction progress of each item are shown in Table 1.12 as follows: INSTITUTE OF ENERGY (IE) 51

52 ENVIRONMENTAL IMPACT ASSESSMENT HOA BINH TAY HA NOI 220kV TRANMISSION LINE Table 1.11: Construction progress of each item are shown in the following table No. Content of works VOLUME CONSTRUCTION TIME 2 nd month 4 th month 6 th month 9 th month 10 th month 12 th month 1. Preparation work 1.1 Compensation work Overall 1.2 Clearing the line corridor (ha) 2 Foundation work 2.1 Leveling foundation (m 3 ) 2.2 Excavating pit (m 3 ) 2.3 Leveling excavating pit (m 3 ) 3 Concrete foundation work 3.1 Reinforcing steel (ton) 3.2 Concreting work (m 3 ) 4 Assembling and building pylons Overall 5 Stretching and wiring work Overall 6 Completion work Overall 7 Deployment and handover Overall INSTITUTE OF ENERGY (IE) 52

53 Total investment Total investment: VND Table 1.12: Total investment No. Sections cost Label Amount 1 Construction costs G XL Equipment Costs G TB Land acquisition costs G GPMB The cost of project management G QLDA The cost of construction investment consultancy G TV Other expenses G K Provisional expense G DP Total Source: Project Notes INSTITUE OF ENERGY 53

54 CHAPTER 2: THE NATURAL, ENVIRONMENTAL AND SOCIO-ECONOMIC CONDITION 2.1. THE NATURAL AND ENVIRONMENTAL CONDITION Geography and geology conditions Geographical conditions: The project 220kV Hoa Binh Tay Ha Noi tranmission line passes through Hoa Binh and Hanoi city and is affected by the natural conditions of northern Vietnam. The terrain of the project is mostly mountainous and delta area with the typically tropical climate with four distinct seasons (spring, summer, autumn and winter). Table 2.1: The natural and environmental condition Hanoi Geographical location: In the Hanoi area, the project line passes through Dong Yen Commune and Dong Doi Huu Quang - Quoc Oai district. Hoa Binh province Geographical location: In the Hoa Binh area, the project line runs through Tan Thinh Ward, Tan Hoa, Huu Nghi Ward, Mong Yen - Hoa Binh commune, Hoa Son commune, Lam Son commune, Luong Son town - Luong Son district, Dan Hoa commune, Dan Ha commune, Mong Hoa commune, Ky Son town - Ky Son district. Climate: The project runs on the total distance of 50.6 km which, however, lies entirely in the northern region of Vietnam with the characteristics of a tropical climate with hot and rainy summers, cold winters with little rain. Located in the tropical area, the area receives high amount of solar radiation and high temperatures. Terrain: In the area of Hanoi, the project mainly passes through plain terrain (mainly cultivated rice field) Terrain: In Hoa Binh provincial areas, the project mostly goes through hilly and mountainous terrain, which is dissected complexly, has high steep slopes with the tendency of northwest - southeast and has only a few plain terrains. Rivers: In the area of Hanoi city, the project cuts Con river and fishing pond at G37 - G38 in the sections, cuts through the trench once at the section G36 - G37, cuts through the canals system on the field of Can Huu commune at section G38 - G39, cuts through the fishing pond system at the section G39 - G40, and cuts through high trench at the section G40 NC. Rivers : In the Hoa Binh province area, the project cuts Da river once at the section G13 - G14, with a length of about 1.4 km, G13 starts from the hill in the Yen Mong commune and reaches G14 on the field of Ky Son hamlet, cuts through some small streams at the section G5 - G6 (cut Dung spring at the area of Huu Nghi ward), at section G8 - G9 (cuts small streams in the area of Tan Hoa ward), at section G12 - G13 (cuts through Thia stream of Mong Yen province), at section G13 - G14 (cuts through the water canals of Dan Ha commune ). In addition, the project also cuts through a freshwater lake at the section G15-G16, crossing ponds and lakes 5 times at the section G30-G31, deeply cuts through 1-crop fishing pond and rice field, crosses through ponds twice Terrain condition 220kV Hoa Binh Tay Ha Noi transmission line has the total length of 50.6 km including 41 angular positions (G). The starting point is the distribution field of 220kV Hoa Binh Hydropower Plant (in Hoa Binh province) and the endpoint is the 220kV Tay Ha Noi substation (in Quoc Oai - Ha Noi). Among them: - The area of Hoa Binh province: 39.8 km long, including 36G, cuts through the territory of Hoa Binh City, Ky Son district, Luong Son district; INSTITUE OF ENERGY 54

55 Number of G and length Terrain Geology - The area of Hanoi: 10.8 km long, including 5G cutting through Quoc Oai district. Table 2.2: Characteristics of topography, local geology project going through. Hòa Bình Hà Nội From the beginning to about G36, total length of 39.8 km. - Starting from the distribution field of 220kV Hoa Binh Hydropower Plant (Hoa Binh province), goes through the downstream of Da River. Through the territory of Hoa Binh, a length of about 10.0 km. The section crossing through Da river (G13 - G14) to Ky Son district has the length of about 13.4 km; Luong Son district approximately 16.4 km in length; - The terrain is mostly low hill and mountain terrain, in the type of weathered terrain combined with erosion corrosion. Botanical fields are mostly forested hills, rice field valleys; - Geology placed on the foundation of the original soil slopes weathered remnants from the rock formations including formations intrusion, eruption (Paleozoic, Mezozoi - PZ3, MZ1), terrigenous sediments (Triassic: T2-3); - Overall assessment level: Terrain topography grade 4: 27.0 km; terrain level 5: 12.8 km; - Level rocky soil level 3-4. From G36 to endpoint, total length of 10.8 km From G36 the line runs on the the territory of Quoc Oai district, crosses Dong Yen, Can Huu, Thach Han, Dong Quang communes. The terrain of the line is mostly plain field for rice and crops plantation, combined with few low hills. - The geology of the construction located on the original weathered soil erosion, corrosion buildup and accumulation of river marine Quaternary age (edq4; alq4); - Evaluate the general level of terrain: Level 4: 8.0 km; Level 3: 2.81 km; - Level rocky soil level 3. Source: Project notes Geological condition Pursuant to the document concerning the survey results, the geological background for construction from the top to the ground includes the following categories. 1. Cover ground (1): Distributed fairly evenly over the surface terrain. The composition is clay in the shade of yellow, yellow -brown, the condition of soil is soft foam on the hills, and elastic in the rice valleys mixed with tree roots and organic remnants. Layer thickness of m. This is the solid layer which will be peeled away pit. 2. Clay layer (1a): Original Quaternary sediments - alq4. Very limited distribution area (the end of the line). Composition contains yellow, yellow gray clay in from soft to hard plastic. Average thickness of m. 3. Clay layer (2a): Original buildup weathered worn - AQ4. The area is mainly distributed in section G36, Da river crossing section. The composition of clay is in the shade of yellow, red yellow, variegated color, from hard plastic to soft plastic. Average thickness of 1.5 m. 4. Clay layer (2b): Original weathered worn - aq4. INSTITUE OF ENERGY 55

56 The area is mainly distributed in the section G36-DC, Da river crossing section, usually under 2a layer. The composition of clay is in the shade of yellow, red yellow, variegated color, from hard plastic to mixed fine laterite. Average thickness is not decided. 5. Clay layer (3a): Original weathered basalt, limestone edq4. The distribution is mainly on the surface terrain of the line. The composition of clay is in the shade of yellow, variegated red yellow, and around 5 % mixture. The status is semi-hard to hard plastic. Thickness varies from 1.5 to 5.0 m. 6. Fine particle clay layer (3b): Tropical weathered basalt intense - adq4... Mainly lies beneath 3a layer, with some places revealed on the surface of the terrain: poocfirit basalt is intensely weathered in the shape of coccolith, in the state ò semi-hard clay, tightly structured. Thickness is not decided. 7. Fine particle clay layer (3c): Intensely weathered zone of limestone edq4. Mainly lies beneath 3a, some places revealed beneath the surface: basalt, limestone, weathered intense beam shape, lumps and clay products semisolid state, tightly structured. Thickness is not decided. The basic physical and mechanical conditions of the class are as follows: INSTITUE OF ENERGY 56

57 Criteria Table 2.3: Main criteria of soil layers Clay Clay Clay Clay layer layer layer layer (2a) (2b) (3a) (3b) Clay layer (1a) Clay layer mixed with particles (3c) Natural humidity W % Natural density W g/cm 3 Dry density k g/cm 3 Density g/cm 3 Plasticity Index Ip % Consistency B Porosity n % Porosity ratio Compression ratio subsidence Unit a cm 2 /dan Cohesive force C dan/ cm 2 Friction angle Degree Strength (m=b=h=1) Deformation module (m=b=h=1) R E Source: project notes. 8. Layer (4+ 4a): The original rock formations. Poocfirit basalt, gray limestone, gray, weathered fractured rock hard, hard state average. Some of the weathered parts have lumps and chips, tightly structured. dan/ cm 2 dan/ cm 2 INSTITUE OF ENERGY 57

58 Geological conditions around beyond the Da River The section crossing Da River is one of the specially designed locations, so the investor has carried out geological surveys in the anchor column 2, from which 05 soil layers from top to bottom as follows: + Cover layer: 0.3 to 2.3m thickness of soil which is soft and has the grass roots and organic remnants will be stripped away during the construction. + Clay layer (2a): Original weathered worn accumulation table - AQ4. + Clay layer (2b): Original weathered worn accumulation table - AQ4. + Clay layer (3a): Original weathered basalt, limestone - edq4. + Layered clay mixed with particles (3b): For intense weathered of basalt - edq4. Da River is expected to span approximately 820m. Survey results of anchor column 2, shows as follows: Table 2.4: Soil physical and mechanical anchor columns in the section crossing the Black River Criteria Clay layer (2a) Clay layer (2b) Clay layer (3a) Clay layer mixed with particles (3b) Natural humidity W % Natural density W g/cm 3 Dry density k g/cm 3 Density g/cm 3 Plasticity Index Ip % Consistency B Porosity n % Porosity ratio Compression ratio subsidence INSTITUE OF ENERGY 58 Unit a cm 2 /dan Cohensive force C dan/ cm 2 Friction angle Degree Strength (m=b=h=1) R dan/ cm 2 Deformation module E (m=b=h=1) dan/ cm 2 Source: Project notes Meteorological Conditions The air temperature Temperature: In the project area, from May to October, hot and humid climate, the average temperature was 27.7 C. From November to April the following year, the cold climate with an average temperature of 19.9 C. Absolute highest temperature measured at the meteorological station in Ha Dong is 40oC, appeared on 5/VII/2010. Absolute lowest temperature measured was 5.9 C during the day 26/I/2005. The value of average temperature from 2002 to 2011 is shown in the following table:

59 Table 2.5: Average temperature of January in the year. ( o C) Year I II III IV V VI VII VIII IX X XI XII Aver age Avera ge Source: Ha Dong Station - Hydro meteorological Data Center - National Center for Hydrometeorology, Air humidity The average humidity of the project area from 2002 to 2011 is 84%. The value of the monthly average humidity and moisture average from 2002 to 2011 are shown in the following table: INSTITUE OF ENERGY 59

60 Table 2.6: Average annual humidity. Year I II III IV V VI VII VIII IX X XI XII Avr Avr Source: Ha Dong Station - Hydro meteorological Data Center - National Center for Hydrometeorology, Radiation Total sunshine hours measured average in 10 years ( ) hours/year. Power mode is closely related to the regime of radiation and cloud status. From January to April XII overcast cloudy sky with the sun shining so at least a year, only 63.6 hours/month. In February, the V, it should warm sunshine hours increased to 144 hours/month... Total sunshine hours of the month and year are shown in Table 2.5 as follow: (%) INSTITUE OF ENERGY 60

61 Table 2.7: Total sunshine hours of the month and year. (Hour) Year I II III IV V VI VII VIII IX X XI XII Avr Avr Source: Ha Dong Station - Hydro meteorological Data Center - National Center for Hydrometeorology, Wind speed and wind direction Wind is one of the basic meteorological factors most affecting the spread of pollutants in the air and disturbs pollutants in water In the project, winter prevailing wind direction is northwest and north, summer prevailing wind direction is South East North West and North. The factors affecting the wind direction is the pressure and topographical characteristics of the area. Average wind speed according to the average direction for many years (from ) are presented in the following table. Table 2.8: The monthly average wind speed and five (m/s) Year/Character I II III IV V VI VII VIII IX X XI XII Average 2002 V(average) Vmax Direction W SSE SE SE W SW SSE NW NE SE NE NE SSE Day VII 2003 V(average) Vmax Direction NE SE NE SE SSE SSE W W SE SE SSE NE W Day V(average) Vmax Direction NE NE SE ENE SW NW SSE NW NE NE NE NE SW Day V(average) Vmax INSTITUE OF ENERGY 61

62 Year/Character I II III IV V VI VII VIII IX X XI XII Average Direction SE SE NE NE SW NW N NW N S NNE NE N Day VII 2006 V(average) Vmax Direction NE SE NE NE N SW SW NE N NW N NNE SW Day VI 2007 V(average) Vmax Direction SE ESE SE NE N SW NE NNE N NE NW SE N Day IX 2008 V(average) Vmax Direction SE NE SE SE NW SE N SW SE ESE NE N NE Day XI 2009 V(average) Vmax Direction N SE NE SE SE SW SE N N NW N SE SW Day VI 2010 V(average) Vmax Direction NNE ESE NNE NNE SW SW S ESE SE NNE NE NE NNE Day III 2011 V(average) Vmax Direction NE SE NNE SE SE NW NNE NW NW NW NW NE NW Day VI Source: Ha Dong Station - Hydrometeorological Data Center - National Center for Hydrometeorology, Evaporation Average annual evaporation project area is 999mm. Month of evaporation is greatest in July reached mm. Evaporation is low as 61.7 mm in August II. Distribution of monthly evaporation PICHER of meteorological stations shown in the following table.. Table 2.9: Average monthly evaporation (mm) Year I II III IV V VI VII VIII IX X XI XII Average INSTITUE OF ENERGY 62

63 TB Source: Ha Dong Station - Hydro meteorological Data Center - National Center for Hydrometeorology, Rain The rainy season usually occurs during the period from May to October. Wettest months are usually July or August is associated with the rainy season in the northern delta. Monthly rainfall is minimal or months are February XII. Annual average rainfall is mm. Maximum daily rainfall is 214mm period (appears on 13/VII/2009). Mean monthly rainfall and average years are shown in table 2.8 below: INSTITUE OF ENERGY 63

64 Table 2.10 Average monthly rainfall in year. (mm) Month I II III IV V VI VII VIII IX X XI XII Year TB Source: Hà Đông station National data center National data center, Abnormal weather Rainstorm: During the heating season (from August to October), there are a certain number of tropical depressions and typhoons forming in the sea off the eastern Philippines go landings on the northern delta move westward cause rain big, strong winds. Northeast Monsoon: The northeast monsoon is the high pressure gas formed from the Asian continent blowing through the South (China) in the north east of North Vietnam from January to May V. IX Between the cold winter, some faster winds and winds stronger than the first and last round of the season. Each northeast monsoon overflow affects local weather from 3 to nearly ten days, with the characteristic air temperature is lowered dramatically, it was "tropical" of that warming. Having the northeast monsoon season overflow in late winter or air meets warm moist tropical weather disturbances, born storm, tornado, hail, devastating the local as they swept through. Hoarfrost: Usually in November December and January the following year, at the end of the northeast monsoon, operating sunny, cloudless night, calm winds, caused strong ground radiation. The air temperature can be lowered to near 0 C rapidly. Water vapor in the air condenses armor ground salt crystals form, causing the weather remains cold called hoarfrost. Hoarfrost can shut down the metabolic processes of plants, frozen tissue so the real tropical mollusks die, damage to the respiratory system of humans and animals. Nom: In winter, alternating among cold snap has unusually hot days or occurs in the spring, air humidity up to 90%, causing moisture condensation phenomena wet floor, mold making supplies use, and food, insect development... called monsoon weather Lightning Number of days with thunderstorm lightning in the area average in the following table: Table 2.11 Number of days in the year Lightning. (Days) Month I II III IV V VI VII VIII IX X XI XII Year INSTITUE OF ENERGY 64

65 Hòa Bình 0,3 0,8 2,9 8,8 14,7 14,3 15,5 13,8 8,0 3,1 0,4 0,1 82,5 station Hà Nội 0,2 0,7 2,0 6,4 9,3 10,4 10,8 9,8 6,2 2,3 0,4 0,1 58,6 station Source: NTR 02:2009 / BXD. The above table shows that most Lightning from May to August to coincide with the rainy period Hydrological conditions Surface water crossing Route 2 Da River is large, survival, affecting traffic on the Black River is primarily where large density transportation. Also online also cut through a few small streams, ponds and lakes. The water level fluctuates seasonally from 0.5 to 1.5 m. The flood season water level quickly pulled in a short time. The level of spring water does not affect the work. Water levels on the river Da multi-slow transformation. Downstream water levels fluctuate and are influenced by the low tide. Average monthly flow over the common river much smaller than average year - AMY: January 10/2013 on the Black River to flow Hoa Binh reservoir is less than 43% compared with AMY; characteristic values of water level, flow monthly salary of 10/2013 (H cm; Q m3/s): River Station Highest Lowest Average TBNN Da River Hoa Binh reservoir (reservoir flow m3 / s) Compared with TBNN % Groundwater: the section on the hillside, mountain low: The water level on the entire route is often very deep below the surface, does not affect the column foundations. Paragraph goes on plain: the average groundwater level of about 4 to 4.5 m. The analytical results of the water samples showed no corrosive concrete. Below is a detailed table showing the rivers and streams that cut across projects: Bảng List of rivers and streams affected by project TT Piket's cutpoint Crossed the corner Name rivers The width of the river (stream) in the direction of cut (m) Pond 83, Stream 23, Đà River 641, Branch of Đà river 22, canal 4, lake+stream 110, stream 71, stream 10, Pond 50, Ao 32,2 INSTITUE OF ENERGY 65

66 TT Piket's cutpoint Crossed the corner Name rivers The width of the river (stream) in the direction of cut (m) Pond 151, Pond 80, Lake 236, Fish pond (one season field) 898, Swamp 79, Pond 30, Pond 69, Pond 70, Canal Pond Pond Pond 154, Pond 109, Pond 74, Pond 87, Pond 72, Con river 48, Fish pond 336, Canal Canal Canal Canal 53, Pond 71, Canal Canal Canal Canal Canal Pond 82, Pond 37, Canal Canal Pond 38, Pond 24, Pond 39, Pond Pond 27, Pond 49, Canal 17 INSTITUE OF ENERGY 66

67 TT Piket's cutpoint Crossed the corner Name rivers The width of the river (stream) in the direction of cut (m) Canal Canal Canal Canal Canal Canal Canal Pond Canal 15 Source: Statistics Report The geological phenomena of physics, electrical resistivity Through the police investigation along the route, terrain landforms on-line column position is less likely to arise slide. Conducting soil resistivity measured by electrical probe method at 20 specific sites. Measurement results averaged for the following classes: Table 2.13 The results of the resistivity measurements of soil STT Class name Height (m) Resistivity ( m) 1 Clay layer (1a+2a+2b) 1,0 4, Clay layer (3a) 1,0 4, Soil particle (3b+3c) 1,0 4, Weathered rock (4) 1,0 4, Earthquakes: according to the seismic zoning map of the territory of Vietnam Institute of Geophysics TTKHTN, Technology and Environment, established in The area of the earthquakes Msmax = 6.1 to 6.5, h = km, I max = 8.0 (according to MSK - 64)) The status of the physical components of the environment Current status of surface water, air, soil To assess the current state of the natural environment in the project area, the sample gas, water consulting unit is Energy Institute has combined with Chemistry Laboratory - Operations Management and Environmental Analysis at the Institute of Chemical Engineering - Student and Professional Documents measurement conducted sampling and analysis. Location map soil sampling, surface water and air along the lines (Location map overall soil sampling, surface water and air are attached in annex) Here are some epitomizes the sampling location platform: INSTITUE OF ENERGY 67

68 Figure 2.1: Location map of sampling platform G1 - G26 Figure 2.2: Location map G26 Endpoint INSTITUE OF ENERGY 68

69 TT 1. Air Environment The monitoring and analysis equipment 21 toxic gases automatic targets measuring: Oldham MX21 Plus (France) Air sampling equipment: BUCK - VSS 5 (U.S.) Noise measuring device: Extech Intrusment (Germany) System instrumentation microclimate: DAVIS Instruments (USA) Dust concentration measuring device: TDA (U.S.) Equipment spectrophotometer, UV - VIS: Jasco V (Japan) Methods of monitoring Field with specialized testing equipment Absorbing solution, GC analysis in the laboratory Preservation: For air samples after sampling is complete, proceed to have blood in the scene and transferred to the laboratory air quality and noise analysis to proceed. Log samples were collected and strict performance during Observation has the problem not yet on the work sampling. Monitoring parameters: The microclimate parameters: temperature, humidity, pressure, wind speed, wind direction The physical and chemical: CO, SO2, NOx, total dust, noise. Position Monitoring: Perform measuring and sampling the atmosphere at 10 locations. Table 2.14: Location of environmental monitoring of air Coordinates Symbol Location N E 1 K Air samples in the front yard Hoa Binh hydropower 2 K K K K K Air samples in true mountain region, held 25 wards of Friendship, Peace City Air samples at his doorstep Thiem, neighbors Bun, Mong Yen, Hoa Binh city. Sample air his doorstep Dinh Van Khue, river neighbor, Dan Ha commune, Ky Son district, Hoa Binh city. Air samples at Back Beach neighborhood, Mong Hoa, Ky Son district, Hoa Binh province. Air samples in the neighborhood of Go Bui, Dan Hoa Commune, Ky Son district, Hoa Binh INSTITUE OF ENERGY 69

70 province. 7 K K K K Front air samples Forestry University at Highway 21 Air samples at Gold Camp, Dong Ha village, Dong Yen Commune, Quoc Oai district, Hanoi. Air samples at Ben Lime, Lower Village Doi, Doi Huu Commune, Quoc Oai district, Hanoi. Air samples in the dike Yen Noi, Thach Radicals, Quoc Oai district, Hanoi. TT The analytical results of air environment: To assess the current state of air quality environmental project area and surrounding areas based on the actual terrain, the wind direction during the day to conduct monitoring surveys. The results of analysis of environmental air areas as follows: Table 2:15. The analytical results of air environment Parameters Unit Result QCVN 05:2009/ BTNMT QCVN 26:2010/ BTNMT K1 K2 K3 K4 K5 1 Temperature o C Humidity % Wind Speed m/s 1,94 2,03 1,99 2,01 1, Wind Direction - TB TB TB TB TB Pressure mbar 1011,3 1001,9 1005,3 1010,7 1011, Total dust g/m Noise dba CO g/m SO 2 g/m NO x g/m TT Parameters Unit Results QCVN 05:2009/ BTNMT QCVN 26:2010/ BTNMT K6 K7 K8 K9 K10 1 Temperature o C Humidity % Wind Speed m/s 2,03 2,01 2,03 2,02 2, Wind Direction - TB TB TB TB TB Pressure mbar 1011,0 1011,3 1011,5 1011,4 1011, Total dust g/m Noise dba CO g/m SO 2 g/m INSTITUE OF ENERGY 70

71 10 NO x g/m Source: Chemistry Laboratory - Operations Management and Environmental Analysis Institute of Chemical Engineering - Student and professional documents. NTR 05:2009 / MONRE: National technical regulation on ambient air quality (for CO, SO2, NO2, total dust) NTR 26:2010 / MONRE: National Technical Regulation on noise. Comment: For air samples after sampling is complete, proceed to have blood in the scene and transferred to the laboratory air quality and noise analysis to proceed. Log samples were collected and strict performance during Observation has the problem not yet on the work sampling. Through the survey, measurement, sampling and laboratory analysis indicates the current status of air environment of the project area 220 kv line west of Hanoi in Hoa Binh-reaching environmental regulations Vietnam regulations: NTR 05:2009 / MONRE in ambient air, NTR 26: 2010/BTNMT: National Technical Regulation of noise. 2. Surface Water Environment The instrumentation and analysis Measuring water quality: Water Quality-Check TOA (Japan) + BOD5 analysis Equipment: BOD HACH instrument (USA) Equipment E.coli analysis: Total coliform Lab HACH (U.S.) Spectrophotometer equipment / UV-Vis Jasco V-530 (Japan) Methods of analysis Measure quickly at the scene; Weight, titration, colorimetric. Preservation: All water samples obtained after instant store in barrel (a temperature of about 4 C) during transportation to the laboratory (Lab). In the laboratory, sample containers were stored in a refrigerator until analysis. Indicator analysis: ph, COD, BOD5, total suspended solids (TSS), DO, ammonium, chloride, fluoride, phosphate, nitrite, nitrate, arsenic, E. coli, Coliform Location observation: Conduct surface water sampling at 10 locations along the line. Notation and coordinates of the sample location as the following table: Table 2:16: Location of surface water sampling No Symbols Coordinates N 1 NM E Locations Black River surface water samples at the position after flood overflow 2 NM NM Samples of surface water in streams Yeah, hold 25 wards of Hoa Binh The stream water samples at Thia, Mong Yen, Hoa Binh city INSTITUE OF ENERGY 71

72 4 NM NM NM The stream water samples at Thia, Mong Yen, Hoa Binh. Samples of surface water in streams flowing through the area charge, hold 17, Tan Hoa, Hoa Binh. Samples of surface water drainage channel at the bottom of the breech bridge, river neighbor, Dan Ha Commune, Ky Son district, Hoa Binh. Samples of surface water canals in Dong Bai, Hoa Son commune, Luong Son, Hoa Binh. 7 NM Surface water samples at Ascension foot waterfall, Bui Go neighbor, Dan Hoa Commune, Ky Son district, Hoa Binh. 8 NM NM NM Samples of surface water in lakes dots, Gold Camp, village of Dong Ha, Dong Yen Commune, Quoc Oai, Ha Noi Samples of surface water in irrigation canals in Ben Lime, Basing House, Quoc Oai, Ha Noi Samples of surface water in lakes Yen Noi, Quang Dong Commune, Quoc Oai district, Hanoi. The results of surface water monitoring sample points as in the following table: Table 2:17: The results of analysis of surface water quality Result No Parameters Unit NM1 NM2 NM3 NM4 NM5 QCVN 08:2008/ BTNMT, Degree B1 1 ph - 7,0 6,9 7,1 7,1 6,8 5,5 9 2 BOD 5 (20 0 C) mg/l Solid (TSS) mg/l COD mg/l DO mg/l 5,3 5,1 3,5 4,5 4,4 4 6 Amoni (NH + 4 ) (calculated by N) mg/l 0,13 0,41 0,22 0,45 0,32 0,5 7 Chloral (Cl - ) mg/l Floride(F - ) mg/l 0,8 0,7 0,6 1,2 1,01 1,5 9 Phosphate (PO 3-4 ) (calculated by P) mg/l 5,3 5,2 6,7 3,6 4,5 10 Nitrit (NO ) MPN/ 0,01 0,01 0,02 0,003 0,002 0,04 (calculated by N) 100ml 11 Nitrate (NO - 3 )( mg/l 2,2 2,3 4,1 3,2 4,0 10 INSTITUE OF ENERGY 72

73 calculated by N) 12 Asen (As) mg/l 0,001 0,002 0,001 0,003 0,004 0,05 13 E.Coli MPN/ 100ml Coliform MPN/ 100ml 3,2x10 3 5,1x10 3 5,3x10 3 6,6x10 3 6,1x No Parameters Unit Results NM6 NM7 NM8 NM9 NM10 QCVN 08:2008/ BTNMT, Level B1 1 ph - 7,2 6,7 7,2 6,8 6,9 5,5 9 2 BOD 5 (20 0 C) mg/l Suspended solids (TSS) mg/l COD mg/l DO mg/l 5,1 4,1 4,2 4,3 4,5 4 6 Amoni (NH + 4 ) (calculated by mg/l 0,34 0,42 0,24 0,41 0,32 0,5 N) 7 Chloral (Cl - ) mg/l Floride(F - ) mg/l 0,8 0,9 1,03 1,3 1,04 1,5 9 Phosphate (PO 3-4 ) (calculated by P) mg/l 4,5 5,2 5,6 2,5 4, Nitrit (NO - 2 ) MPN/ (calculated by 100ml N) 0,01 0,011 0,021 0,005 0,002 0,04 Nitrate (NO - 3 )( 11 calculated by mg/l 2,1 2,3 4,6 6,2 4,1 10 N) 12 Asen (As) mg/l 0,01 0,01 0,01 0,007 0,009 0,05 13 E.Coli MPN/ 100ml Coliform MPN/ 100ml 5,5x10 3 6,7x10 3 5,9x10 3 7,1x10 3 7,6x Source: Chemistry Laboratory - Operations Management and Environmental Analysis Institute of Chemical Engineering - Student and professional documents. NTR 08:2008 / MONRE, Level B1: National technical regulation on surface water quality. B1: for the purpose of irrigation or irrigation purposes other uses require the same quality of water or waterway purposes and other purposes with low water quality requirements. The result is true for samples analyzed at the time of sampling. Comment: Environmental status of the surface water project area is relatively good, most of the samples analyzed were achieved NTR 08:2008 / MONRE - National technical regulation on surface water INSTITUE OF ENERGY 73

74 quality. However, as measurements and analysis of surface water samples have not reached the target in bold NTR 08:2008 / MONRE, Level B1: + NM3: BOD5 (200C) exceeds 0.13 times TSS: Exceeding 0.02 times COD: Exceeding 0.03 times + NM5: BOD5 (200C) exceeds 0.6 times COD: Exceeding 0.43 times + NM7: BOD5 (200C) exceeds 0.6 times COD: Exceeding 0.33 times + NM10: TSS: Exceeding 0.02 times Coliform: Exceed 0,013 times. 3. Land Environment Monitoring Indicators: Humidity, SiO2, Al2O3, Fe2O3, Cao, MgO, 2, 4-D, As, Cd, Cu, Pb, Zn. Position Monitoring: Time sampled: 11/05/2012: D1, D2; 11/06/2012: D3 Table 2:18: Soil Sampling Location Coordinates TT Symbol Location N E 1 Đ Acres in the mountain region Yeah, hold 25 wards of Friendship, Hoa Binh. 2 Đ Đ Acres at Back Beach neighborhood, Mong Hoa, Ky Son district, Hoa Binh. Yen acres De Noi, Quang Dong Commune, Quoc Oai district, Hanoi. Soil analysis results are shown in the following table: Table 2.19: Soil analysis results NO Parameter Unit Result Đ1 Đ2 Đ3 1 Humidity % 11,2 9 9,5-2 SiO 2 % 60,4 63,4 64,6-3 Al 2 O 3 % 13,7 15,5 14,3-4 Fe 2 O 3 % 7,9 7,4 7,6-5 CaO % 1,4 1,6 1,5-6 MgO % 1,2 1,5 1,4-7 2,4-D ppm/g land 0,0026 0,0029 0, Asen (As) mg/kg dry soil 0,4 1,1 1,02 12 QCVN03:2008/BTNMT (Agriculture Land) 9 Cadimi (Cd) mg/kg dry soil 0,01 0,01 0, Copper (Cu) mg/kg dry soil 2,3 4,1 7, Lead (Pb) mg/kg dry soil 3,4 5, Zinc (Zn) mg/kg dry soil Source: Chemistry Laboratory - Operations Management and Environmental Analysis Institute of Chemical Engineering - Student and professional documents. INSTITUE OF ENERGY 74

75 Note: NTR 03:2008 / MONRE: National Technical Regulation on permissible limits of heavy metals in soil. The result is true for samples analyzed at the time of sampling Comment: Through the analysis of soil samples in the project service area, shows that the environmental criteria of land are under NTR 03:2008 / MONRE (agricultural land). Metal content: As, Cd, Zn, Cu, Pb, Hg in soil, indicating the accumulation of heavy metals in agricultural land. The analytical results of the heavy metal content of the entire study sample are much smaller standard NTR 03:2008 / MONRE. This proves that the soil in the study area is not contaminated heavy metals and relatively safe for the development of production, the cultivation of food crops and crops. Current status of soil environmental project area is relatively good, heavy metal concentrations in soil were achieved QCVN 03: 2008/BTNMT - National Technical Regulations on permissible limits of heavy metals in soil Electromagnetic field In order to assess the electric field in the project area, key Laboratory of High Pressure - The Energy Institute has conducted monitor at 40 locations along the 220kV Hoa Binh The West of Ha Noi and got the results as follows: - Temperature while measurement: 28 0 C - Relative Humidity: 75% - Measuring equipment: electromagnetic field meter HI Measurement date: 10/17/2012 Table 2:20: Table results of measured electric field strength and the magnetic field strength along the project. No. Location Electric field intensity (V/m) Magnetic field strength (ma/m) 1 Tan Thinh ward, Hoa Binh 44,9 200 In front of column G1 2 Tan Thinh ward, Hoa Binh 48,8 203 In front of column G1 3 No. 2 lane 112 Tieu Khu Muoi Road, Between column G Hoa Binh G2 4 No. 24 alley 92 lane 112 Tieu Khu Between column G Muoi Road, Hoa Binh G2 5 No. 24 alley 92 lane 112 Tieu Khu Between column G Muoi Road, Hoa Binh G2 6 Dong village, Hoa Binh Thanh Between 02 columns commune, Hoa Binh G4 G5 7 Preschool Hoa Binh, Hoa Binh Between 02 columns commune, Hoa Binh G4 G5 8 Bun hamlet, Yen Mong commune, Hoa Between 02 columns 1,05 26,1 Binh G13 G14 9 Bun hamlet, Yen Mong commune, Hoa Between 02 columns 1,11 25,8 Binh G13 G14 10 Bun hamlet, Yen Mong commune, Hoa Between 02 columns 1,08 26 Binh G13 G14 Note INSTITUE OF ENERGY 75

76 No Location Dong Ben village, Mong Hoa hamlet, Ky Son district, Hoa Binh Dan Phuong village, Mong Hoa hamlet, Ky Son district, Hoa Binh Dong Xoai village, Mong Hoa hamlet, Ky Son district, Hoa Binh Dong Xoai village, Mong Hoa hamlet, Ky Son district, Hoa Binh Dong Xoai village, Mong Hoa hamlet, Ky Son district, Hoa Binh Go Bui hamlet, Dan Hoa commune, Ky Son, Hoa Binh Go Bui hamlet, Dan Hoa commune, Ky Son, Hoa Binh Go Bui hamlet, Dan Hoa commune, Ky Son, Hoa Binh Dong Doi hamlet, Hoa Son commune, Luong Son, Hoa Binh Dong Doi hamlet, Hoa Son commune, Luong Son, Hoa Binh Nay stream, Suối Nây, Hoa Son commune, Luong Son, Hoa Binh Dong Tram, Hoa Son commune, Luong Son, Hoa Binh Group 6, Tan Son hamlet, Hoa Son commune, Luong Son, Hoa Binh Group 6, Tan Son hamlet, Hoa Son commune, Luong Son, Hoa Binh Hoa Son commune, Luong Son, Hoa Binh Hoa Son commune, Luong Son, Hoa Binh Dong Yen commune, Quoc Oai district, Ha Noi Dong Yen commune, Quoc Oai district, Ha Noi Dong Yen commune, Quoc Oai district, Ha Noi Electric field intensity (V/m) Magnetic field strength (ma/m) 1,2 25,1 1,2 25, , , ,4 1,83 21,2 1,78 21,7 1,80 21,1 4, , , , ,5 22, ,15 10,8 1,.11 10,5 1,02 10,7 Note Between 02 columns G16 G17 Between 02 columns G17 G18 Between 02 columns G19 G20 Between 02 columns G19 G20 Between 02 columns G19 G20 Between 02 columns G22 G23 Between 02 columns G22 G23 Between 02 columns G22 G23 Ms. Thanh s house courtyard, around columns G30 G31 Commune internal road, around columns G30 G31 around columns G31 G32 around columns G31 G32 around columns G33 G34 around columns G34 G35 Before the gate No. 53, around columns G35- G36 On the highway 21, around columns G35- G36 around columns G37- G38 around columns G37- G38 around columns G37- G38 INSTITUE OF ENERGY 76

77 No Location Ben Voi, Dong Yen commune, Quoc Oai district, Ha Noi Ben Voi, Dong Yen commune, Quoc Oai district, Ha Noi Can Xa Thuong, Can Huu commune, Quoc Oai district, Ha Noi Can Xa Thuong, Can Huu commune, Quoc Oai district, Ha Noi Dong Quang commune, Quoc Oai district, Ha Noi Dong Quang commune, Quoc Oai district, Ha Noi Dong Quang commune, Quoc Oai district, Ha Noi Duong Coc hamlet, Dong Quang commune, Quoc Oai district, Ha Noi Duong Coc hamlet, Dong Quang commune, Quoc Oai district, Ha Noi Duong Coc hamlet, Dong Quang commune, Quoc Oai district, Ha Noi Duong Coc hamlet, Dong Quang commune, Quoc Oai district, Ha Noi Electric field intensity (V/m) Magnetic field strength (ma/m) 1,07 10,2 1,09 10,4 1,17 10,7 1,12 10,8 1,09 10,7 1,09 10,8 1,10 10,5 1,11 10,7 1,12 10,2 1,05 10,4 1,05 10,7 Note around columns G37- G38 around columns G37- G38 around columns G38- G39 around columns G38- G39 around columns G39- G40 around columns G39- G40 around columns G39- G40 around columns G39- G40 around columns G39- G40 around columns G39- G40 around columns G39- G40 Notes: - The values in the table are results calculated average values of 03 samples/01 point. The measurement locations are shown in the table in hand with Peace 220kV line - west of Hanoi. - The result is true for samples at the time of observation. Source: Key Laboratory of High Pressure - Energy Institute. Comment: According to the results, the measured electric field strength measured at 40 points along the project (at the time of measurement points) are guaranteed much lower than the allowed limit is 5kV/m by Decree 106/2005/ND-CP. During operation, power is transmitted on 220kV line will cause electromagnetic fields affect the health of workers and residents operate in a corridor if no mitigation measures this impact The status of ecosystems and biological resources The status of the ecosystem Based on the results of field studies and analysis of 2006 Ikonos satellite images, along the lines are divided into three ecosystems (HST): Ecosystem residential areas, watershed ecosystems, agricultural ecosystems Industry: 1. Residential Ecosystem Biome in cord obviously artificial biomes, including major crops, livestock provide essential needs for the local population. Plant: perennial fruit crops, ornamental, shade, building INSTITUE OF ENERGY 77

78 materials... Trees as spices, medicinal plants. Animals: Mice categories, house mice, rats, mice, cattle, pigs, goats, horses, poultry, cattle, wild boar, jungle rat... Birds: red- whiskered bulbul, yellow star, shots robin... Reptiles: gecko, lizard long tail Watershed ecosystem Water valley: ponds, lakes, marshes, rice fields. Plants: Plants tolerate waterlogged whispering, they plant Castor, pregnant again, Say... phytoplankton species in the fields of diatom, green algae, eyes shine, dirt, grass, crops for... Zooplankton: Group crustacean copepods, crustacean antennae industry, rotifers and other groups such as Swimming inclined... Benthos: Group of bivalve molluscs, gastropod molluscs, crustacean shellfish, aquatic insects, fish... Birds: White Stork, White -breasted hoe, fish pool. The water flowing waterways: rivers, streams, canals and ditches, many coastal caves. Appearance: Water Snakes, Frogs Amphibian as copper, appendage, pots, cups lumpy... Food chain cord is not long, usually 4-5 chains. Most organisms live streams focus on coastal and bottom floor because there are more places to hide, many organic sludge residue, avoid strong currents. Biome here changes seasonally wet season and dry season. 3. Agricultural ecosystem Agricultural ecosystem is classified as artificial, both terrestrial component part both in the water, is responsible for the production of agricultural products and livestock farming ( in the fishery). Plants include: agricultural crops such as rice, corn, potatoes, cassava, beans of all kinds, vegetables, shrubs, trees workshops; shrub has yellow florals, including cherry, gold bracelet, black alum, buy flakes, Virgin... Harmful insects, pests such as grasshoppers, BPH, bugs, the account of, beetle leaves, equipage, leaf, stem, fly... Beneficial insects: belostomatids, Honeybees, Bees pleasure, forest Honeybees, like food Locusts, grasshoppers, crickets, pupae, bee... Birds eat seeds, insects and small animals: Sao gold mine, the Se... Reptiles: Lizards, Snakes water, drain snake. Luong residents: frogs, appendage... Animals: poor, virtually no large and medium-sized species, mainly rodents as a hamster. The average chain food has 3-4 chains. Corn, rice is the main object of providing the ecosystem and is the basis for many food consumption level 1 creatures, mostly insects, rats and poultry. Level 2 organisms consumed mainly birds Diverse biological components group According to the survey report ecological project area was conducted by the University of Natural Science, Vietnam National University, Hanoi (03/2013), the composition of the group of organisms in a corridor is defined as follows : 1. The composition of phytoplankton Identified 55 species of planktonic algae of 4 sectors: algae, diatoms, green algae and algae eye. Up to 20 species of green algae. 10 diatom species. Water valley is mainly in the area. Watershed lakes, natural ponds, creeks, rice fields mainly phytoplankton algae, fish pond waterbodies phytoplankton algae eye is primarily (more than 49). Table 2:21: phytoplankton composition project area Water type Total (tb/i) Algae (tb/i) Green Algae (tb/i) Silic alage (tb/i) Eye alage (tb/i) Natural pond , , Fish pond , ,7 2198, ,5 Trench , , ,0 - Field , , ,6 586, ,8 2. Aquatic vascular plants INSTITUE OF ENERGY 78

79 In the last survey period, higher aquatic plants are not abundant. Common water hyacinth, spinach, honeycomb, mouse ears, the duckweed. Group net less developed. 3. The composition of vascular plants live on land According to the survey results, statistics and collected 236 plant species belonging to 202 genera and 70 them. Ferns Sector 3 species of 3 genera and 3 families; industry Magnolia 233 species belonging to 199 genera and 67 families. Private sector angiosperms focused mainly in layer two cotyledons (Magnolia). 4. Composition terrestrial animal groups Amphibians - Reptiles Summarizing the findings of previous authors, through actual field observations, interviews people, the local authorities, we have identified projects exist along the 17 species belonging to 9 families, 2 sets of two classes of reptiles and amphibians. Habitat Village: Highest (24 species) as most lizards and frogs... Habitat field: 19 species of snakes as cradling, worm snakes, frogs, lizards short legged, long-tailed skinks... Animal Crab trees, large land Mice, Rats little land, little hamster and rat species The composition of zooplankton Identified 40 species of zooplankton: rotifers, Chan oars, Facial industry and larvae, insects, larvae, fry... Overall zooplankton density ranged from over 1,000 to over 600,000 piece/m3. Density structure between the different groups of zooplankton in each type of water body. 6. Benthic Through surveys in the watershed, initially identified 28 species of benthic crustacean groups, boys snail larvae, insects, little silk worms. The same species of crayfish found in rivers, lakes, crab found in rice, crab found in the springs and streams. 7.Fish According to statistical data and survey people, has identified 20 species of fish, such as carp, float, sesame, tilapia... Including natural (river waters) and fish (hydro lake, pond). 8.Insects System insect species belonging to and 10 of them, Insect pests of food plants: 32 species belonging to 13 families, 6 sets. Insect pests of fruit trees, 15 species belonging to 10 families, 5 orders. Insect pests of food plants: 16 species belonging to 8 families, 5 orders. Insect pests of crops: 27 species The situation of the botanical group along the line Based on the results of field surveys, the tranmission line runs mainly on Acacia hill, planted tree hills, complex-tree hills, rice fields... Below is a detailed statistics of the botanical types within the safety corridors of the electricity grid project: Table Types of trees along the projects No Section Length 1 NC -G Rice (m 2 ) Crop (m 2 ) Fruit trees (m 2 ) 1,760 longan Planted forests (m 2 ) 1,100 acacia 2 G1 - G ,300 4,400 acacia 3 G2-G ,800 acacia Natural forest (m 2 ) INSTITUE OF ENERGY 79

80 4 G3 - G G4 - G ,000 bamboo, 2,200 acacia 5,500 bamboo, 5,500 acacia 6 G5 - G ,000 acacia 7 G6 - G ,600 acacia 8 G7 - G ,000 acacia 9 G8 - G ,000 acacia 10 G9 - G ,900 acacia 11 G10 - G ,700 acacia 12 G11 - G ,340 acacia 13 G12 - G , G13 - G ,800 5,500 acacia, 5,500 bamboo 4,400 bamboo, 6,600 acacia 15 G14 - G ,511 2,046 acacia 16 G15-G ,000 acacia 17 G16-G ,200 acacia 18 G17-G ,200 13,200 acacia 19 G18-G ,200 30,800 acacia 20 G19-G ,300 8,800 acacia 21 G20-G ,000 acacia 3,806 bamboo 22 G21-G ,800 acacia 2, G22-G ,800 acacia 24 G23-G , G24-G ,200 1,100 banana 35,200 acacia, 4,400 bamboo 5,500 acacia 26 G25-G ,000 acacia 27 G26-G G27-G G28-G ,000 lemon grass 22,000 lemon grass 33,000 lemon grass 6,600 chuối 8,800 banana 11,000 acacia 22,000 acacia 22,000 acacia, 4,400 bamboo INSTITUE OF ENERGY 80

81 30 G29-G ,400 6,600 acacia 31 G30-G ,600 22,000 11,000 acacia 32 G31-G ,800 11,000 15,400 longan 11,000 acacia 33 G32-G ,400 acacia 34 G33-G G34-G ,800 longan 8,800 longan 6,600 acacia 4,400 acacia 36 G35-G ,000 4,400 acacia 37 G36-G , G37 - G ,780 17, G38 -G ,560 4, G39 - G , G40 - NC ,040 1,320 bananas Source: Survey report along the line The environmental incidents Environmental incidents are accidents or risks occurring during human activities or abnormal changes of nature and causes severe environmental degradation. Environmental incidents can occur due to a number of reasons: Storms, floods, droughts, cracked earth, earthquakes, landslides, volcanic eruptions, acid rain, sleet, climate changes and other natural disasters; Fire, forest fire, technical problems causing harmful to the environment of the manufacturing facilities, business, or economic, scientific research, technical, cultural, social, security and defense; However, Vietnam is located on a stable geological base in which earthquakes rarely happen. If any, the earthquakes are usually at only 3-4 magnitude, and the foundation columns and columns are calculated and designed to withstand earthquakes up to level 6. The fire control and prevention of the locals which the projects go through are well controlled. The forest is newly planted so landslide phenomena rarely occur. INSTITUE OF ENERGY 81

82 2.2. SOCIO EMCONOMY CONDITIONS Preliminary socio economy conditions of planed area The plan of 220kV tranmission line from Hoa Binh the West of Hanoi crosses over two provinces Hoa Binh and Hanoi, so that the socio economy development of the planed area has the characteristics of Hoa Binh and Hanoi: 1. Socio economy conditions of Hoa Binh province Hoa Binh is a moutainous province in the northwest of our country, bordering Hanoi capital, the natural area is 4,662.53km 2, and the population is: 803,300 people (in 2004). It consists of 10 districts and 1 city (Cao Phong, Da Bac, Kim Boi, Ky Son, Lac Son, Lac Thuy, Luong Son, Mai Chau, Tan Lac, Yen Thuy and Hoa Binh city), and has many residents of ethnic groups live together. Hoa Binh province is one of the four provinces of Vietnam in which the Vietnamese (Kinh people) are not the majority, and it also has considered to be the capital of the Muong people, because most of Muong people live here. According to the national census in 1999, there are about 30 ethnic groups in the province area, the largest ethinic is Muong people making up 63.3%; Vietnamese (Kinh people) is 27.73%; Thai people is 3.9%; Dao people is 1.7%, Tay people is 2.7%; Mong people is 0.52% and other ethnic groups are 1.18%. 2. Socio economy conditions of Hanoi city Hanoi is the capital city and the head of Vietnam about the natural area and the second largest urban area after Ho Chi Minh city, it also ranks the second of population in account of 6,561,900 people (in 2010). Located in the rich Red river delta, it soon became the center of polity and religion right from the beginning of Vietnam. After the expansion of administrative boundaries in August 2008, Hanoi area is 3,345.0 km 2 including 10 districts, 1 town and 18 rural districts. Hanoi is also a center of culture and education with the theaters, museums, traditional villages, national media and major universities. With the current development demands, the plan of 220kV tranmission line is necesssary and contributes to the socio ecomony development of Hanoi Socio economy conditions in local area of Hoa Binh province The plan of 220kV tranmission line from Hoa Binh the West of Hanoi crossing Hoa Binh province with the length of 39.8km, through Hoa Binh city, Luong Son district and Ky Son district, shown in the following table: Table 2.23: Socio economy conditions in local area of Hoa Binh Socio development No. Local Economy development Hoa Binh city 1 Tan Thinh commune Agriculture: The total area of fruit and vegetable farming is 23 hectares. The total livestock and poultry: 71 cows, 672 pigs, 2879 poultry, a 4-hectare fish farming area. Forestry: Cared and protected area is 75 hectares. Industry and Handicraft Education and training: Improving the quality of teaching staffs, quality of teaching and learning in schools. Health: Good implementing the national health programs. Population: 9552 people. Population growth rate: The INSTITUE OF ENERGY 82

83 No. Local Economy development Industry: there are 56 small production facilities and over 1,000 employees with stable income. Trade Services: there are 120 households in markets, 03 supermarkets and 451 production facilities. Socio development rate of natural population growth is 0.32%. Social policy: There are 25 poor households, making up 0.85%. 2 3 Tan Hoa commune Huu Nghi commune Agriculture: Agriculture development to communes the good production, mainly to serve the local people. Rice farming area is 28 hectares; corn farming area is 10 hectares. Care and protect the livestock and poultry of the commune. Industry and Handicraft Industry: Handicraft manufacture is the main with 118 production facilities and 304 employees. Agriculture: Agricultural production and livestock and poultry farming. Forestry: Promote to care and protect forests, fire prevention. Industry Handicraft Industry: The output value reached 45.5% in the first 6 months of the year, reached 45.5% compared to the plan. Trade - Services: 486 facilities and individual households with 3,500 employees. Total sales of service activities in the first 6 months of 2012 has estimated of over 96 billion VND, increasing 28% compared with the same period in 2011, has reached 49.2% compared to the plan. Education and training: There are 4 schools in the area including 02 kindergartens, 01 primary school, and 01 secondary school. All schools have full classrooms, facilities, furniture and teaching equipment. Health: Good implementation of primary health care for people in the area. Population: 6345 people. Education and training: Compulsory education in primary school the right age and secondary school compulsory education, compulsory education. Health: Good implementation of primary health care for people in the area. Population - family planning: The birth rate is remained at 0.7%. Population: 9315 people. INSTITUE OF ENERGY 83

84 No. Local Economy development Socio development 4 Yen Mong commune Agriculture: The total area of rice farming is hectares, corn farming is 45 hectares; Total output of cereal crops has reached 785 tons, peanut output is 4 hectares and bean output is 2 hectares. Livestock: 436 buffaloes, 137 cows, 3,285 pigs; 7,966 poultry; 92 goats. Forestry: Exploit and replant 41 hectares of acacia. Industry Handicraft Industry: The output value in 9 months has reached 13 billion, reached 77% of the plan, increasing 12.5% compared with the same period in Trade - Services: Maintain the operation of My market and the facilities of trade services in the area: 95 facilities having revenue of 12.5 billion VND, comparing with the year plan has reached 65%. Comparing with the same period in 2011 has increased 15%. Education - Training: Complete the program of compulsory education in the area Health: Implement the health care for people. Population: 3698 people. Luong Son district 5 Hoa Son commune Agriculture: Rice: 62.6 hectares; crops: 80.3 hectares; Veterinary Livestock: 318 buffaloes, 104 cows; 8,085 pigs, 284,600 poultry and aquatics... Forestry: Plant 18.2 hectares. Industry - Handicraft Industry: Small production facilities are the main Education - Training: The facilities of the 4 schools are spacious and clean. Health: Focus on the health care for people. Population: There are 6,119 people/1467 households in the commune. The total number of poor households is 32 households, nearly poor households is Lam commune Son Agriculture: rice: 6.2 hectares, crop: 90 hectares, lemongrass: 170 hectares. Banana: 120 hectares. Tea: there are 50 ha, output is 7 tons/hectares. Livestock: A number of livestock and poultry: 84 buffaloes, 308 cows, 980 pigs, Education - Training: The facilities of schools meet the basic requirements of teaching and learning. Health: The primary health care for people has implemented with industry INSTITUE OF ENERGY 84

85 No. Local Economy development Socio development 7 Lương Commune Sơn 18,600 poultry, 24 deers, 68 goats, 165 hedgehogs, 1630 beehives. Forestry: The plan of transferring 20 hectares new planted has unfulfilled yet Industry - Handicraft Industry: The commune has a total of 132 households of trade services Agriculture: Rice: 87.3 hectares; crops: 72 hectares; corns: 40 hectares; vegetables: 15 hectares; beans: 5 hectares. Veterinary Livestock: 369 buffaloes, 289 cows, 2,299 pigs, 250 goats; 250 dogs, 11,252 poultry; 1,350 beehives. Forestry: Forest area is 20 hectares Industry - Handicraft Industry: There are 800 households and individual business. The handicraft value in 9 months is estimated 210 billion VND, reached 108% comparing with the year plan and 95% comparing with the same period. Trade - Services: The value in 9 months: 521 billion VND, reached 130% of the year plan and 130% comparing with the same period. regulations. Population: The commune has a total of 4,234 people /1,072 households. Education - Training: The facilities of schools meet the basic requirements of teaching and learning. Health: The health care for people is always interested. Poverty reduction program: In the first 9 months of 2012, the commune has more than 100 poor households = 2.66%. 81 nearly poor households are 2.17%. Population: 13,060 people. Ky Son district 8 9 Dan commune Dan commune Hoa Ha Agriculture: Cultivated area: hectares, reaching 84% of the plan. Forestry: planting new forests after harvesting is 15 hectares, reached 75% of the plan. Industry - Handicraft Industry: The facilities producing items such as block brick, wood furniture, wine basket, brooms, soldering iron door - aluminum chassis, clothing productions are the main... Agriculture: The total area of spring winter crops: 348 ha. Livestock: 332 buffalos, 281 cows, Education - Training: The facilities of schools meet the basic requirements of teaching and learning. Health Family population and children: Maintaining the duty as prescribed, ensuring health care for people. Population: 2,270 people. Education - Training: The facilities of schools meet the basic requirements of teaching INSTITUE OF ENERGY 85

86 No. Local Economy development 152 goats, 1,450 pigs, 11,200 poultry, 20 tons fish farming. Forestry: Caring old forest is 675 hectares, new planting is 65 hectares, and mining is 46 hectares. Industry - Handicraft Industry: The handicraft industries such as broom, cement brick, toothpick split, forestry processing, furniture production. Socio development and learning. Health: The health care for people is always interested. Population: 4,957 people. In the first 6 months has no 3rd child birth case, the rate of natural population growth is 0.7%. 10 Mong commune Hoa Agriculture: The total cultivated area: 345 hectares. Total cereal output is 579 tons. Livestock develops stable. Forestry: Replanting the total area of 40 hectares. Industry Handicraft Industry: 3 facilities attracting the large numbers of local employees, the regular employees are 260 people with stable income. Education - Training: The facilities of schools meet the basic requirements of teaching and learning. Health: Continue to implement the national program on health care, ensure better health care for people. Population: 5,015 people. The rate of natural population growth: 0.8%. The rate of malnutrition: 14.5%. Poverty reduction: In the recent the commune has 35 poor households. 11 Ky Son town Agriculture: Mainly farming of rice, corn and vegetables, livestock for a stable development. Industry - Handicraft Industry: the traditional handicraft are still being developed, a number of workshops create jobs with stable incomes for workers. Trade - Services: small business households not focused yet Population: 2,439 people Education: Compulsory education in pre-schools, towards to primary and secondary schools. Health: Good implementation of social health care and disease prevention health care for local people. Culture - information sport activities: Well organize culture and sport activities. (Summerized from local socio economy reports) INSTITUE OF ENERGY 86

87 Socio-economic conditions of local areas in Hanoi city: The project goes through territories of Hanoi with the length of 10.8 kilometers. The socio-economic conditions of local areas where the project goes through is depicted in the table below: Table 2.24: The socio-economic conditions of local areas in Hanoi city. Economic development Social conditions Ordinal Local areas conditions Dong Yen Commune Quoc Oai District Can Huu Commune Quoc Oai District Dong Quang Commune Quoc Oai District Agriculture: The working area is 995 ha, which rises by 1.1% in comparison with the same period of the previous year. Industry: Traditional craft villages, such as tailoring, rattan weaving, broom making for exporting, attract more than 200 workers. Total income from industrial production- handicraft and service in 9 recent months has reached 4 billion and 500 million Viet Nam Dong, which decreases 23.6% in the same period of the previous year. Agriculture: Winter crops area is 28.6 ha, spring crops area is ha; total produce is tons. Veterinary: Plans of bird flu prevention and livestock and poultry immunization have achieved targets. Industry, handicraft and service: Knitting, broom making, rattan weaving have been retained and developed stably. Agriculture: Total working area in 2011 is ha. Total value of planting in 2011 is 55,287 million VND, which accounts for 45.28% agricultural value. Livestock and fisheries: Total value of livestock and fisheries is approximately 66.8 billion VND, which is equal to 30.39% of total agricultural value. Industry: Construction, carpentry, handicrafts of rattan, mechanics, transportation and Education and training: Schools infrastructure basically meets requirements for teaching and studying. Healthcare: In 9 previous months, healthcare centers have conducted check-ups and treatments for 4,682 visits; and open immunization for 100% of children in the area Population: 10,298 inhabitants. Education and training: Schools infrastructure continues growing stably to meet requirements Healthcare: Ensuring to provide people with healthcare, sanitation, hygiene, as well as prevention from disease such as influenza A. Population: 9210 inhabitants. Education and training: 01 secondary school, 01 primary school and 03 kindergartens with total number of 162 teachers. The number of nationally qualified teachers at primary schools, secondary schools, and high schools are 100%, 100%, and 98.3% respectively. Healthcare: Dong Quang Commune has 01 healthcare center, which is m 2 and INSTITUE OF ENERGY 87

88 Ordinal Local areas Economic development conditions Social conditions commerce services equipped with 03 patient Commerce- Service: Total value is 7016 million VND, which is rooms and 10 patient beds. The healthcare center is run by 10 equivalent to 3.28% in the people (01 doctor, 07 nurses, economic structure. 01 midwife, and 01 pharmacist). Population: inhabitants. (Collected from the Socio-economic reports of local areas) Socio-economic conditions of households in row Crossing 2 provinces: Hoa Binh and Hanoi city, the project has been stretched over 50 kilometers; therefore, the economic situations of households in the project area vary significantly, depending on the economic and social situations. During a fieldwork, an interview about 220kV electricity line was conducted with local people. Most of them are Kinh and Muong, usually with 4-5 people in each household, even with 6-7 people each. Only some households run family business or work for other companies, however, the majority of households in the project area do low-paid jobs such as agriculture or forest, with an average outcome of 2-5 million Vietnam Dong/household/month. Especially in Hoa Binh province area, transportation difficulties put effects on economic development. Also from the report, most of household agree with the project. Most of the affected households live in Hoa Binh province; only 03 families and 03 other constructions in Hanoi city are in effects. The majority of families work in agriculture with lowincomes. Each family usually has 4-5 people, predominantly are Muong and Kinh people. Details of households affected by the project are shown in the following table: Household Table 2.25: List of households in the row Area Height (m 2 Wall Roof ) (m) Tan Thinh Ward Hoa Binh City Hoa Binh Province Mr. Quan 40 Brick Tile 6 Mr. Son 40 Brick Tile 6 Mrs. Loi 50 Brick Tile 6 Mr. Thu 54 Brick Tile 6 Mrs. Man 50 Brick Tile 6 Mrs. Kieu 45 Brick Tile 6 Mrs. Thieu 48 Brick Tile 6 Mrs. Hoi 50 Brick Tile 6 Huu Nghi Ward- Hoa Binh City- Hoa Binh Province Mr. Thuan 60 Brick Tile 6 INSTITUE OF ENERGY 88

89 Household Area (m 2 ) Wall Roof Height (m) Mr. Nghanh 50 Brick Tile 6 Hoa Binh Ward- Hoa Binh City- Hoa Binh Province Mr. Dung 40 Brick Tile 6 T.M.N 40 Brick Tile 6 Mrs. Phong 48 Brick Tile 6 Mrs. Dan 36 Brick Tile 5.5 Mrs. Phuong 32 Brick Concrete 5.5 Tan Hoa Ward Hoa Binh City Hoa Binh Province Mr. Mo 40 Brick Tile 6 Mr. Lang 50 Brick Concrete 5.5 Mr. Thanh 48 Brick Concrete 5.5 Mr. Kinh 40 Brick Concrete 5.5 Mr. Thanh 36 Brick Tile 6 Mr. Ninh 48 Brick Tile 6 Yen Mong Ward Hoa Binh City Mr. Thiem 52 Brick Tile 6 Dan Ha Commune Ky Son District Hoa Binh Province Mr. Thanh 12 Wood Leaves 3.5 Mong Hoa Commune- Ky Son District Hoa Binh Province Mr. Bao 40 Brick Concrete 4.5 Mr. Quan 40 Brick Tile 5.5 Hung Son Commune Luong Son District Hoa Binh Province Mr. Hung 40 Brick Tile 6 Mr. Doan 60 Brick Tile 6 Mr. Cuong 50 Brick Tile 6 Hoa Son Commune Luong Son District Hoa Binh Province Mr. Khuynh 50 Brick Tile 6 Mr. Sau 45 Brick Tile 6 Mrs. Hoa 50 Brick Tile 6 Three appurtenances 50 Brick Tile 6 Mr. Don 48 Brick Concrete 11 INSTITUE OF ENERGY 89

90 Household Area (m 2 ) Wall Roof Mr. Thuong 50 Brick Tile 6 Mr. Sy 50 Brick Tile 6 Height (m) Mr. Sy 56 Brick Concrete 11 Mr. Tue 50 Brick Tile 6 Mr. Tue 48 Brick Tile 6 Mr. Thanh (Appurtenance) 50 Brick Tile 6 Mr. Luyen 50 Brick Tile 6 Abandoned house 36 Brick Tile 6 Mrs. Ban 100 Brick Tile 6 Mrs. Moi 48 Brick Concrete 7 Mr. Hop 50 Brick Tile 6 Mrs. Nga 50 Brick Tile 6 Mrs. Y 50 Brick Tile 6 House + Appurtenance Mrs. Y 120 Brick Concrete 12 House + Appurtenance Mrs. Bai 40 Brick Tile 6 Mr. Hung 60 Brick Concrete 7 House + Appurtenance Mr. Hung 150 Wood Leaves 8 Stilt house Mr. Hanh 45 Brick Concrete 5.5 House + Appurtenance Mr. Luan 120 Wood Leaves 8 Stilt house Mr. Quang 50 Brick Tile 6 House + Appurtenance Mr. Hung 50 Brick Tile 6 Mr. Thang 50 Brick Tile 6 House + Appurtenance Mr. Tung 50 Brick Tile 6 House + Appurtenance Mr. My 45 Brick Concrete 5.5 House + Appurtenance Mr. Hao 60 Brick Concrete 11 House + Appurtenance Mr. Hung 50 Brick Tile 6 House + Appurtenance Dong Yen Commune- Quoc Oai District Ha Noi Abandoned house 32 Brick Tile 6 Mr. Trung 60 Brick Concrete 15 Mr. Chien 15 Brick Tile 3 Ms. Thu 15 Brick Tile 4.5 Fish watching INSTITUE OF ENERGY 90

91 Household Area (m 2 ) Wall Roof Height (m) Chicken coop 45 Brick pro 3.5 Farm extension 45 Brick Tile 4.5 Source: Vertical statistical INSTITUE OF ENERGY 91

92 CHAPTER 3: ASSESSMENT OF ENVIRONMENTAL IMPACTS Sources of impacts relating to wastes in preparation phase Preparation phase Construction phase Operation phase Survey of alignment selection, cleareance Clear mines and explosives Gather the machinery and materials Sources of air pollution Sources of water pollution Sources of solid waste pollution Souces of soil pollution Planning Pollut ed by emissi on Pollute d by dust, sand Noise, vibran cy Sewage from daily life Sewage from constru ction Overfl own rainwater Solid waste from daily life Solid waste from construc tion CTNH Life, economy, society Health of labor and residents; ecological system; plants and animals Erosion Scene Figure 3.2:Diagram of sources of impacts relating to wastes INSTITUE OF ENERGY 92

93 Sources of impacts without relation of wastes in preparation Preparation phase Operation phase Construction phase Temporary land for construction Land withdra wal for project Clearance of safety corridor Electromagnetic intense Stretch line Build the piles Construction of foundation and piles Transport materials and equipment Gather the workers Lost the agricultural land Traffic, infrastructure and technology Cut trees along the safety corridor Weaken the ecology, animals and plants Health of workers and residents Erosion Public order, scene Economy status of households lost the agricultural land Conditions of the local economy, society Figure3.2:Diagram of sources of impacts without relation to wastes INSTITUE OF ENERGY 93

94 3.1. ASSESSMENT OF IMPACTS IN PREPARATION AND CONSTRUCTION PHASE Sources of impacts relating to wastes in preparation phase Clear the mines and explosives before construction In this phase, the project owner will coordinate with Ministry of Military Command in the province and other agencies to clear the mines and explosives remaining after war. Gather the machinery, materials at project area Before construction, the owner will transport and gather the machinery and materials at the project area. The transportation of construction materials (bricks, sand, rocks, cement, iron, steel ) will cause the pollutants (NO 2, SO 2, CO, VOC, THC) from fuel combustion. In addition, the sand, stones, may scatter during transportation if there is no control of vehicles. These activities will obstruct the traffic and have negative impacts on the scene of project area Sources of impacts relating to wastes in construction phase Sources of air pollution Polluted by emission Emissions of the construction phase include: emissions from vehicles, from equipment, from backup generators. Emissions from vehicles: Emissions from vehicles have a great effect on the air of the project area. The vehicles with large payload vehicles and the other equipment will release a significant number of pollutants into the environment, such as SO 2, NO x, CO, THC và Pb. According to WHO s statistics, 1 ton of fuel used for large trucks(3,5-16 tons) is containing 64kg of SO 2, 55kg of NO x, 28kg of CO, 12kg of VOC. 1 ton of diesel used for machinery (less than 3,5 tons) is containing 64kg of SO 2, 300kg of CO, 30kg of VOC, 1,35kg of lead (Table 3.1). This amount of emissions will cause the serious air pollution. Table 3.1: Coefficient of air pollution for trucks SO Means of transport Unit (u) 2 NO x CO VOC Pb kg/u kg/u kg/u kg/u kg/u 1000 km 4,29S 11,8 60 2,6 - Automotive using diesel Ton(s) 20S km 4,5S 4, ,31 Automotive using gasoline Ton(s) 20S Source: WHO, Note: S is the content of sulfuric oil (S = 0,25%). The automotive using diesel has the average speed of 30 km/h, the payload of 3,5-16 tons, the average length of feeder of 6 km, and maximum of 8 hours/day. If these vehicles operate individually, the maximum load of emissions are predicted as follow: Table 3.2: Estimated load of air pollution No. Pollutants Pollution load (kg/day) 1 SO 2 0, NO x 16,992 3 CO 86,4 4 VOC 3,744 Emissions from the machinery: Burning the fossil fuels will release the harmful emissions: CO, SO 2, NO 2, THC..., which inluences directly on the workers and the neighborhood. Table 3.3:Amount of fuel consumption for construction machinery and equipment. INSTITUE OF ENERGY 94

95 No. Type of equipment Power (HP) Number DO consumption per day (liter/day) 1 Roller Excavator Crane Concrete mixer Generator Total Notes: 1HP= 0,7456KW Average fuel consumption: 0,83 liter/1hp/day; 1,11 liter/1kw day Emission factors (EFI) of the crane and excavator have the power under 450KW based on the fuel consumption. Table 3.4: Coefficient of pollutant emissions. Unit: kg/liter No. Type of equipment CO NO x PM 10 SO 2 VOCs 1 Excavator 1, , , , , Crane 1, , , , , Source: Guidance data of WHO and the US Environmental protection agency about the assessment of pollutant emissions from engines. Table 3.5: Estimated amount of emission from equipment, machinery for construction. No. Type of equipment Amount of emission (kg/day) CO NOx PM 10 SO 2 VOCs 1 Excavator Crane Total The calculation reveals that the amount of emission is not large; on the other hand, the transport activities take place during the construction period, which has a little impact. Emission from the backup generators: The backup generators for construction use the DO as the fuel. Combustion of fuel will generate dust and gases, such as CO, SO 2, NO x.according to the specifications of generator, the amount of DO for running 1 generator of 150 kva is 70kg/h. The coefficient of pollution from generators using DO will be presented in Table 3.6: Table 3.6: Pollution coefficient of air pollutants from burning DO No. Pollutants Pollution coefficient (kg/ton of oil) 1 Dust 0,28 2 SO 2 20S 3 NO 2 2,84 4 CO 0,71 Source: WHO, S is the content of sulfur in DO According to Petrolimex, S = 0,25% Based on the pollution coefficient and oil consumption capacity of generators, you can estimate the number of pollutants. The calculation results are presented in Table 3.7. Table 3.7: Estimated amount of pollution from burning DO No. Pollutants Amount of pollution (g/h) INSTITUE OF ENERGY 95

96 No. Pollutants Amount of pollution (g/h) 1 Dust 19,60 2 SO 2 350,00 3 NO 2 198,80 4 CO 49,70 When burning the fuel to run the generator, assuming the residual coefficient is 30% of official rate and the temperature of emission is 120 o C, the actual volume of emission generated by burning 1 kg of oil is given by the formula: With: a: % Sulfur content in DO (0,25%) b: % Nitrogen content in DO (0,2%) c: % Hydro content in DO (22,85%) d: % Carbon content in DO (76,7%) T: Temperature of emission (343 o K) Vt: Volume of emission at T (with the residual coefficient of 30%) When replacing the figures of DO contents into the formula, we got the result: Vt = 27,18 m 3. Flow of emission of a generator is 2.011,32 m 3 /h. Therefore, the concentration of pollutants from 3 generators will be presented in Table 3.8. Table 3.8: The concentration of air pollutantsdue to burn DO for generators Concentration of QCVN 19:2009/BTNMT, No. Pollutants emission (mg/m 3 ) Column B, K p = 1; KV = 1 1 Dust 30, SO 2 551, NO 2 313, CO 78, Notes: QCVN 19:2009/BTNMT, column B, Kp = 1,0; KV = 1,0: Technical national standards on the industrial emissions of dust and other inorganic substances, column B is applied for new base, Kp = 1,0 corresponding to the flow of emission less than m 3 /h, KV= 0,8 corresponding to the center of city and urban of type II. Compared with QCVN 19:2009/BTNMT, column B, the concentration of pollution from generators is lower than the standard except SO 2. However, the backup generators are used for emergency. Polluted by dust and sand Sand and dust are the source of air pollution during construction. The mainly affected object is the workers at site and the neighborhood of project area. Dust arises mainly during the period of excavation, filling holes, leveling and transport of construction materials. Total amount of earthworks in the entire line of Hoa Binh Western Ha Noi is: Volume of excavated soil in a hole: 452,54 m 3. Total excavated soil in a hole: ,49 m 3. Volume of filled soil in a hole: 441,77 m 3. Total filled soil in a hole: ,48 m 3. Thus, total residual volume of soil for filling a hole is 1389,01 m 3 (equivalent with 3.680,8755 ton). If the average weight of soil is 2,65 tons/m 3, total soil for filling and excavation in the entire project is ,944 tons. INSTITUE OF ENERGY 96

97 If the coefficient of dust pollution is 0,0075 kg/ton (3) of soil, total dust is 2265,29 kg in the entire project. Total foundation along the line is 129, so that the total dust caused for 1 foundation is kg. The construction time for a foundation is about 15 days in average and the distance among these foundations is 320 m, then total amount of dust generated in foundation construction is 0.58 kg/day. Thus, the amount of dust generated from digging and excavating can be accepted. Noise and vibrancy During construction period, noise is caused mainly by the construction machinery, vehicles on site and the collision of machinery and metal... The noise spread in the construction area is defined as follows: (4) L i = L p - L d - L c (db A ) With: L i Noise level at the position which is d (m) far from the calculation point. L p Noise level at the source of noise (far from 1,5m). L d Noise level reduced by the distance d, at the frequency i. L d = 20 lg [( r 2 /r 1 ) 1+a ] (db A ) r 1 Distance to the source of noise, corresponding to Lp (m) r 2 Distance of calculation of noise reduction, corresponding to Li (m). a Coefficient including the impacts of abosorbing noise of ground (a = 0). L c Noise reduction through the obstacles. In the project area L c = 0. With the above formula, you can calculate the noise level of construction machinery with the distance of 15m, 200m và 500m. The calculation results are presented in Table 3.9. Table 3.9: Noise level caused by construction machinery. Unit: dba Construction machinery Noise level 15m from source of noise Noise level 200m from source of noise 1 Grader Drill Compactor No. Noise level 500m from source of noise Concrete pile machine ,5T 5 Concrete mixer The calculation results show that the noise caused from construction machinery has impacts on the residential area with the distance of more than 200m, but it ensures the limit in QCVN 26:2010/BTNMT. Therefore, the impacts of noise is not significant, the period of impacts are little (only when pumping water or mixing concrete). Most foundations are far from the residential area, has an insignificant impact; the workers are mostly affected. o Sources of sewage pollution Sewage from daily life Sewage is generated from eating, bathing, washing of workers at site. The number of construction workers is 300 people, divided into groups, each of which has people. However, as we mentioned above, the workers will hire the local houses, so the amount of sewage will be treated by the septic tank of households before being discharged into the environment. The amount of water supply is calculated as follow: Q = q.n/1000 (1) Pollution coefficient set by WHO (2) Researching documents of Mr Nguyễn Đình Tuấn and colleagues INSTITUE OF ENERGY 97

98 With: q: Standard amount of water supply is 150L/person. Day (TCXDVN 33:2006) n: Number of workers using water at site. Q = (21-27 people)/group * 150L/person.day /1000 = (3,15 4,05 m 3 )/day/group. The sewage accounts for 80% of the amount of water supply (5), which is equivalent with 120 (liters/person/day). Thus, the amount of sewage at site is 2,52 3,24 m 3 /day/group. Total amount for groups (300 people) is 36 m 3 /day. The number and concentration of pollutants without treatment will be presented in Table 3.10and 3.11: Table 3.10: Amount of sewage Number of Water supply Sewage people 150 (l/person/day) 120 (l/person/day) Foundation position ,15 4,05 (m 3 /day) 2,52 3,24 (m 3 /day) Entire line (m 3 /day) 36 (m 3 /day) Table 3.21: Concentration of pollutants in sewage without treatment Concentration QCVN No. Pollutants Unit 14:2008/BTNMT, Low Medium High level B 1 SS mg/l BOD 5 mg/l N total mg/l P total mg/l Oil mg/l Coliform MPN/100mL Source: Lâm Minh Triết, Nguyễn Thanh Hùng, Nguyễn Phước Dân, The amount of sewage of each group is little (2,52 3,24 m 3 /day). Thanks to stay at the local house, the sewage is treated by septic tanks, which makes the concentration of pollutants lower. Therefore, the sewage of workers has little impacts on environment. Incurred in the construction phase The pollution can be derived from the maintenance works, concrete mixer or equipment and machinery washing. The main composition of pollutants in sewage is inorganic materials such as soil, sand, cement, oil. The number of pollutants depends on many factors such as the scope of project, the time of construction, weather conditions, worker awareness, and method of construction technology, quality of building materials. If the amount of waste and leakage of oil is entering into the natural flow, there will be a great impact on the aquatic ecosystem because oil may cut the path of the air exchange - reduces DO in water and oil enters the body of organisms in the aquatic ecosystems. Thus the amount of oil will be a source of pollution of water quality and underground water in the area. However, this impact is not significant due to the fact that the construction process along the line mainly incorporates both machines and manual; thus, the waste and leakage of oil will be not large. For the water pumping from the pit during construction phase: If this work is not done well, it will affect the production and daily life of local people, which analyzes more detail in thepart of erosion. Therefore, the impact of sewage on the environment is considered as a moderate impact. In the process of digging and wire tension, the soil can be eroded into the flow near the construction area, increasing the turbidity of the water. However, the construction period in a (5) Technique of sewage treatment MA Lâm Vĩnh Sơn. INSTITUE OF ENERGY 98

99 foundation position (approximately 15 days) and the time of wire tension between 02 columns (about 04 days) is short, so this impact is negligible. Overflown water after rain This kind of water is one of the sources of water pollution because they are accompanied by contaminants such as oil, wastes, dirt, food scraps into the drainage system of the project area. Rain water is usually considered as clean water; thus, its pollution is often insignificant. The contractor will take measures to manage the amount of waste generated to limit the potential for contamination of rain water. o Sources of solid waste pollution Solid waste from construction To minimize the amount of solid wastes from construction, the investor will deploy the gathering of raw materials and classify the solid wastes. The recyclable materials (iron, steel, container materials, fuel...) will be collected and transport to the local treatment of solid waste to use the remaining of construction wastes for leveling. Therefore, the impact on the environment is negligible. Solid waste from daily life There are some wastes from daily life activities of workers at site. However, because they rent to sit the local house, the amount of waste will be collected together with household trash. The solid waste factor is 0.4 kg of garbage/person.day (6).The number of workers on the site is people, so the amount of household waste is discharged from 8.4 to 10.8 kg/day. Composition of waste from this source is usually easily decomposed, accounted for 70% and the rest is paper, plastic, packaging, glass,... Although there is a little amount of pollution, it has high potential to pollute the air, water and underground water when it flows through the waste storage area because of easy decomposition. Therefore, the investors need to have a plan of collection to dispose the wastes as regulations. Table 3.12: Amount of wastes Wastes Number of people 0,4 (kg/person/day) Each construction area ,4 10,8 (kg/day) Entire line (kg/day) Hazardous wastes It includes: oil leakage from the operation and maintenance of construction machinery, the oil containers and oily rags in the repair process. The estimated volume is 10 kg for each position of construction; therefore, there are approximately 1,290 kilograms of hazardous wastes in entire line. This waste may cause environmental pollution due to high toxic substances in each source, so there should be a plan for collection and treatment (eg: URENCO). Sources of soil pollution o Solid wastes from daily life There is a little amount of waste generated by the construction group. They includes mainly food scraps, packaging, cans, the amount of solid wastes is calculated in Table As mentioned, the wastes from daily life will be collected together with household wastes. If the household waste is collected at the prescribed place or buried as regulated, there is no impact on the environment. The impact of this waste on the environment is considered negligible. o Removal of solid wastes in construction phase (6) Theo tiêu chuẩn của Bộ Xây dựng và một số đô thị trên thế giới. INSTITUE OF ENERGY 99

100 During the construction period, the solid wastes of construction generated in 01 position include: cement bags, excess materials, wooden crates, rags... The volume is not large, so there is little impact on the environment. o Soil excess after construction Soil excess is usually used for the foundation, road compaction. The amount of soil excess after filling the foundation is calculated to be 10,77 m 3 /position (equivalent with 28,5 tons/foundation position). Thus, this soil excess will be moved to the disposal of each local area Sources of impact without relation to wastes in the preparation and construction phase Impacts of land acquisition In the preparation phase, the survey of alignment selection, clearance and housing relocation will have effects on the life, as well as economic and social environment of the local area. In the project area, there are no cultural and historical buildings as well as the graves of local residents. The line passes through 4 districts of 02 provinces (Hoa Binh and Ha Noi). It is mainly across the land of rice and subsidiary crops. Many alignments are breaking the steering angle to avoid the densely populated areas. However, it is inevitable to pass through some households along the line. According to Dispatch No.785/UBND-CN of People s Committee of Hoa Binh, dated May 19 th 2008, the People's Committee approved the basic position and alignment of the 220kV line in Hoa Binh province, established and amended by the IE. According to Dispatch of reply (attached in the Appendix)from 14 communes in the project area, they have agreed with the position and alignment of the 220kV line of Hòa Bình Western Hà Nội. The projectors have adjusted the alignment to avoid the local planning of land use. The alignment is selected to minimize the impacts on housing, land acquisition, assets and infrastructures. The project will have impacts on 65 households (equivalent with 129 positions of foundation) during the period of design and preparation. The affected range is the permanently occupied land for foundation construction, which may change the land use from agricultural land to industrial land. Beside that, there is the temporarily occupied land during the construction phase. However, the land will be restored after construction. Plants and trees on the corridor will be cut before construction and never be restored. When the construction starts, the plants and trees will be damaged and the agricultural land is affected. In addition, the temporarily occupied land may have impacts on the corridor.these houses will be repaired to meet the technical conditions, such as: the roofs and walls made of non-flammable materials, the metal structure connected to the ground; not obstruct the entry to check and maintenance There is no household to resettle. The impacts on land, plants, crops and housing are not large. Thus, the main impacts are on the agricultural land, changing the land uses. However, there are no serious impacts on the environment and socio-economic. The clearance of corridor and compensation is complied with the Decree 106/2005/NĐ- CP of the Government, dated July 10 th 1999 on the safety corridor of high-voltage grid; and Decree 81/2009/NĐ-CP to give the solutions for the line and residents, and the policies on compensation, land clearance of TEP and WB. The compensation is expected to start in October Total estimated cost will be updated to ensure the principle of compensation at the replacement cost. The affected households and buildings in the safety corridor are listed in Table 2.25: List of households in the safety corridor. INSTITUE OF ENERGY 100

101 In the 220kV line of Hoa Binh-Western Ha Noi project, there are 111,5 hhectares of land located in the safety corridor of 220kV high-voltage grid. The survey shows that most of these areas are agricultural land. The line includes 129 positions of piles, equivalent of 129 positions of foundation. Therefore, the entire land for 129 positions of foundation will be permanently occupied, which has great impacts on the households who own the cultivated land because of the loss of means of production. It may decrease their income and the amount of food supply. However, the survey on resettlement compensation reveals that the percentage of the permanently occupied land in total cultivated land is very small (<10%); thus, the affected households will have adequate compensation and no significant impact on the income and daily life. There is an impact of the temporary land occupancy on the cultivation of resident; however, this area is quite small and temporarily occupied during construction period (about 3-6 months), which is slightly influenced on a crop season. This occupied area will be returned after the completion of foundation construction. Impacts on the ecology and forestland This project causes the vegetation deterioration in the safety corridor to ensure the safety of tranmission line and open the temporary road for construction. The clearance in the corridor will directly affect the rice, orchard and the acacia/eucalyptus hills. The transport of equipment and supplies causes damages to the plants in case of crops. There are many trees to cut down because the line passes through the orchards, gardens and the acacia, eucalyptus hill. The affected forest is mostly poor and planted forest (acacia, eucalyptus and fruit trees, bamboo ); thus, there is no rare animal to be preserved. The line is not going to cut across the nature reservation, which has no direct impact on the plant system. However, a new line appears in the air may has a certain impact on the initial orientation of the animals belonging to the class of birds, now this impact has not been well studied. The corridor has no impact on the forest, nature reserve or specialized forest where there are rare species. It only affects a certain forestland managed by the residential people. There are details as follow: Area of permanently affected forestland No. Local Area (m 2 ) I Hòa Bình Province 16885,1 1 Hòa BìnhCity 5046 Tân Thịnh District 488 Hữu Nghị District 1245,2 Hòa Bình Commune 353,6 Tân Hòa District 1503,6 Yên Mông Commune 1455,6 2 Kỳ Sơn Prefecture 4615,8 Kỳ Sơn Town 0 Dân Hạ Commune 1718 Mông Hóa Commune 1101 Dân Hòa 1796,8 3 Lương Sơn Prefecture 7223,3 Lâm Sơn Commune 2481 Lương Sơn Town 695,8 INSTITUE OF ENERGY 101

102 No. Local Area (m 2 ) Hòa Sơn Commune 4046,5 II Hà Nội 1374,4 1 Quốc Oai District 1374,4 Đồng Yên Commune 638,4 Cấn Hữu Commune 540 Thạch Hãn Commune 196 Đồng Quang Commune 299,3 Total 18259,5 Area of temporarily affected forestland No. Local Area (m 2 ) I Hòa Bình Province ,5 1 Hòa BìnhCity ,4 Tân Thịnh District Hữu Nghị District 38240,6 Hòa Bình Commune 15578,4 Tân Hòa District 55559,4 Yên Mông Commune Kỳ Sơn Prefecture ,4 Kỳ Sơn Town 2257 Dân Hạ Commune Mông Hóa Commune 54490,8 Dân Hòa ,6 3 Lương Sơn Prefecture ,7 Lâm Sơn Commune ,4 Lương Sơn Town 54460,2 Hòa Sơn Commune ,1 II Hà Nội Quốc Oai District 2244 Đồng Yên Commune 2244 Cấn Hữu Commune 0 Thạch Hãn Commune 0 Đồng Quang Commune 0 Total ,5 Board of Management of Northern electricity project is responsible for the compensation for the affected households by cutting trees. The compensation expenses are made by the unit price approved by People s Committee of Hoa Binh and Ha Noi. INSTITUE OF ENERGY 102

103 Impacts on water navigation and road traffic The transport of equipment and excavation may have impacts on the local traffic in a short time. The transportation of construction materials is generally favourable because of the road traffic development. The transport conditions are favourable. The provinvial road system is relatively good. Therefore, the material transportation will not overburden the road traffic in the local areas. The transmission lines mainly pass through the communal roads. They cut the roads 54 times as follow: + 10 times of cutting the asphalt roads: at ĐĐ-G1 (in Hữu Nghị District), at G7-G8 (at the asphalt road to Tu Lý), at G13-G14 (at the asphalt road toyên Mông Commune), at G14-G15 (across the asphalt road to the hill), at G18-G19 (1 time), at G19-G20 (1 time), at G29-G30 (across the asphalt road to the military barrack), at G35-G36 (across the asphalt road in the campus of Forestry University and cut Ho Chi Minh one time), at the connection of the 220kV line of Hòa Bình Việt Trì (1 time) times of cutting the concrete roads: at G1-G2 (2 times), at G2-G3 (in the communal road), at G5-G6 (1 time), at G7-G8 (across the concrete road to the mixture hill), at G10-G11 (1 time), at G22-G23 (across the concrete road to the eco-tourism of Thăng Thiên), at G30-G31(5 times of cutting the communal concrete road), at G31-G32 (1 time of cutting the concrete road), at G34-G35 (1 time), at G35-G36 (2 times of cutting the concrete road in the campus of Forestry University), at G36-G37 (1 time). + 8 times of cutting the dirt road: at G5-G6 (1 time), at G26-G27 (2 times), at G30-G31 (1 time), at G31-G32 (2 times), at G32-G33 (1 time), at G34-G35 (1 time). +5 times of cutting the rocky road: at G30-G31 (2 times), at G31-G32 (1 time), at G33- G34 (1 time), at G35-G36 (1 time) times of cutting other roads. At G35-G36, which cuts the Highway 21 (Ho Chi Minh Road),the traffic density is moderate; thus, this is the most significantly affected traffic along the line. The scaffolding will be built to minimize the impacts on the traffic. Impacts on the water navigation: The project have 1 time of cutting across the Da river at G13 G14, with the length of 1,4km from(on the hill of Yên Mông Commune) to G14 (in the field of Kỳ Sơn). This is the area with the most significant impacts on the water navigation in the entire project. In addition, the line also cuts Con River at G37-G38, cuts some streams: at G5-G6 (cut across the streams in Hữu Nghị District), at G8-G9 (cut across the stream in Tân Hòa District), at G12 G13 (cut across Thia stream in Yên Mông Commune), at G13-G14 (cut across the canal in Dân Hạ commune), and at other canals. It takes 3 days to stretch the transmission line through Da River. The investor will inform to the local authorities, the agencies of water transport management on the river and the local people before a few days. The prepartion will be performed in the previous week. The transportation of construction materials may increase the number of vehicles and subside the ground in the project area. This process may cause the negative impacts or accidents without arrangement and management. The road will be degraded due to these transports. The investors and contractors must follow the transportation plan to avoid the damages to the road system; have some method of reducing impacts presented in Chapter 4. Impacts on the natural protection area, bio-diversity and historical buildings The transmission line is designed to be far from the residential area, the natural protection area and historical and cultural buildings, which are not affected by the project.according to the information of the natural proctection areas and the recommendation of WB in Vietnam, Hoa Binh and Ha Noi include 06 protected areas: Ba Vì National Park, Island lake of Da River, Ngoc Son Reservation, Hang Kia - Pà Kò Reservation, Phú Cảnh Reservation, and Thượng Tiến INSTITUE OF ENERGY 103

104 Reservation. The shortest distance between the project and these areas is more than 20km; therefore, there is no impact on these reservations. Figure 3.1. List of protection areas and recommendations of Hoa Binh province INSTITUE OF ENERGY 104

105 Figure 3.2. Project location, the reservations and recommendations Notes: No. Symbol Name of reservations The shortest distance 1 A Hang Kia - Pà Kò Nature Reserve 60km 2 B Ba Vì National Park 20km 3 D Island Lake - Đà River Reservation 20km 4 N Ngọc Sơn Reservation 60km 5 P Phú Cảnh Reservation 40km 6 T Thượng Tiến Reservation 35km Impacts on the rivers, streams and ditches near the construction area That the construction of concrete foundation is located near the rivers, streams and ditches, may cause the erosion and have negative impacts on the natural drainage in the area. However, the position of foundation is usually far away from rivers and streams. If the foundation position must be located near rivers and streams, there is embankment of streams and rivers by wooden stakes to prevent from the erosion and water congestion. Erosion Most of these piles are concentrated in mountainous areas; thus, the construction process can increase the erosion due to cutting trees and opening the temporary roads. However, the current vegetation cover in the project area is relatively good. Moreover, excavation, backfill and ground leveling are prioritized to implement in the dry season. Therefore, the impacts of erosion are considered small with short duration and small area affected by the project. Risks of fire, shocks There is no toxic during the project period. There is no risk of fire or shocks thanks to clear the mines before constrution. Economic social problems A large number of workers at site and the clearance for construction activities will affect the people in project area: disturbing the normal life, the local security order, affecting the landscape and causing the local pollution in the project area. Therefore, the investor should not INSTITUE OF ENERGY 105