environmental management plandocuments.worldbank.org/curated/en/147521468130204101/...ppc province...

TAM LONG POWER JOINT STOCK COMPANY ………o0o…………

Renewable Energy Development Project World Bank Loan

ENVIRONMENTAL MANAGEMENT PLAN

HOA PHU HYDROPOWER SUBPROJECT

Dak Lak, October 2012

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E2041 V10

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Hoa Phu Hydropower Project

Environmental Management Plan (EMP)

ABBRIVIATIONS

EIA Environmental Impact Assessment

EMP Environmental Management Plan

EPC Environmental Protection Commitment

ECOP Environmental Codes of Practice

REDP Renewable Energy Development Project

CPC Commune People’s Committee

DPC District People’s Committee

PPC Province People’s Committee

WB World Bank

APs Affected persons

DSP Dam Safey …


Environmental Management Plan (EMP)

TABLE OF CONTENTS

Page Identification of safeguard policies applied to the subproject 11. Introduction 11 1.1. Main characteristics of the subproject 12 1.2. The subproject financier 12 1.3. The subproject objectives 12 1.4. Responsibility in preparation of Environmental Management Plan 132. The subproject description 13 2.1. Location of the subproject 13 2.2. Summary of the subproject 16 2.3. Some images of the subproject location 26 2.4. Summarized assessment of the compliance with the WB policies 303. The Subproject Environmental and social issues 32 3.1. Environmental issues 32 3.2. Social issues 424. Impact mitigation plan 465. Environmental monitoring plan 596. Capacity building plan of Envirenment Management 717. Environmental management cost 728. Community consultation 739. Conclusion 75References 76List of reference documents 76Appendix 1: The subproject master plan 78Appendix 2: Subproject Environmental Impact Assessment Approval 79Appendix 3: Community consultation minutes 83Appendix 4: Decisions of Dak Lak PC on alloting land to Tam Long power JSC

for the subproject construction89

Appendix 5: The subproject construction schedule 92


Environmental Management Plan (EMP) 1

IDENTIFICATION OF SAFEGUARD POLICIES APPLIED TO THE SUBPROJECT

TABLE A. LIST OF PRELIMINARY IDENTIFICATION OF THE LEGALITY OF THE SUBPROJECT

ISSUES RELEVANT? RESULTS Is the subproject located inside or near national park or nationally protected areas?

NO

Is the dam of the subproject, if available higher than 15m? NO

Does the subproject has reservoir capcity of 3 million m3 or more? YES - Checked and

confirmed by DSP

Does the subproject change the land use structure and need to relocate the displaced persons or not?

YES

- The subproject acquires farming land where no households are living so do not need to carry out relocation.

- Resettlement plan has been prepared and applied

Are there any ethnic minority people living or using land in the subproject area?

YES

Ethnic Minority Development plan has been prepared and applied

Does the subproject affect significant cultural properties? NO

Is the subproject located in or near the international water source? YES

This subproject is located on the Srepok river which. The Srepok River is a major tributary of the Mekong River. It runs from the Dak Lak Province in the Central Highlands of Vietnam through the Ratanakiri and Stung Treng Provinces in Cambodia to join the Mekong near Stung Treng town

Complete EIA/EPC or not? YES

EIA has been approved by Ministry of Natural Resources and Environment under



ISSUES RELEVANT? RESULTS Decision 1811/QD-BTNMT dated 17/09/2009. Because ADB also finances this subproject via a fund managed by Dragon Capital, EIA meets environmental requirements of Government of Vietnam and EIA has been prepared and approved by ADB on July, 2011.

Does the subproject get all approvals from the PPC? YES

- Official Letter No. 2200/UBND-CN dated 08/10/2007 of Dak Nong PPC; - Official Letter No. 193/UBND-CN dated 16/1/2008 of Dak Lak PPC; - Decision 1606/QD-BCT, dated 14/11/2007 of MOIT; - Decision 0138/QD-BCT dated 11/1/2010 of MOIT.

Has the community consultation with likely affected persons by the subproject been implemented?

YES

Minutes of EIA disclosure at the two host communes.

Has the EMP compiled? YES Does the subproject affect dowstream flow, ecosystem and inhabitants living at the downstream?

YES

Mentioned in EMP

Are the impacts in construction phase mitigated sufficiently? YES Mentioned in EMP

Does the subproject newly build access road? How is it managed? YES Mentioned in EMP

Does the subproject newly build transmission line? YES Mentioned in EMP



TABLE B. LIST OF DOCUMENTS NEED TO IDENTIFY OF THE SUBPROJECT

DOCUMENTS INCLUDED?

Feasibility research YES

Approved commitment to environmental standards YES

Environmental Management Plan YES

Resettlement Plan YES

Ethnic Minority Plan YES

Approvals from Natural resource and Environment Department of Dak Lak and Dak Nong provinces

YES

Dam safety checking of DSP YES

Other approvals (if any) YES



TABLE C. SCREENING OF WB’S SAFEGUARD POLICIES Environmental Assessment (OP/BP 4.01): potential environmental impacts of the subproject includes those relevant to land acquisition and construction activities; those relevant to conversing land to reservoir and changing flows in downstream environment; impacts at downstream on water quality and aquatic bio-diversity; those relevant to finding, collecting, transporting and storing biomass fuel; land using contradict biomass production or reservoir construction; and those in operation phase such as noise and waste management. These impacts can increase cumulative effects of the rapid development such as upstream and downstream hydropower and environmental flows. However, these impacts are unconsiderable.

ENVIRONMENTAL SAFEGUARD SCREENING

CRITERIA

APPLIED?, YES OR NO

(mark )

OP/BP 4.04: Natural Habitats Natural habitats are defined as land and water areas where the ecosystems' biological communities are formed largely by native plant and animal species, and human activity has not essentially modified the area's primary ecological functions. 1. Is the subproject located within any National Biological Conservation Areas, (NBCAs), National/Provincial/District Protected Areas (NPAS, PPAs, DPAs)? (If yes, subproject is excluded).

YES □ NO

2. Will the subproject result in significant degradation or conversion of habitats and/or forests in protected areas, proposed protected areas or areas that are considered of special ecological significance? If yes, what is the consequence?(If yes, subproject is excluded)

YES □ NO

3. Will the subproject aim to bring about changes to the management, protection, or utilization of natural forests or plantations, whether they are publicly, privately, or communally owned?(If yes, subproject is excluded)

YES □ NO

4. In the case of a biomass subproject, will the subproject undertake commercial harvesting of forests (e.g., for fuel for biomass plant)? (If yes, subproject is excluded)

YES □ NO

5. Is the subproject located within the buffer zone of any National Biological Conservation Areas, (NBCAs), National/Provincial/District Protected Areas (NPAS, PPAs, DPAs)? (if yes, subproject is eligible but requires permit)

YES □ NO

6. Will the subproject flood a forested area? (if yes, subproject is eligible but requires permit).

YES □ NO

Basing on the above identification to assess whether it need to apply the policy OP/BP 4.04. NO

If the answer to any of Questions 1-4 is YES, OP/BP 4.04 will apply and the subproject is NOT ELIGIBLE for refinancing



* Investigation results shows that the subproject does not acquire land in sensitive areas. The subproject location in the connection with surrounding subjects is shown in Figure 1 and 1B, Item 2: The subproject description Pest management (OP/BP 4.09): The subproject will not use herbicide, pesticide and other chemical products. Therefore, this policy is not applied.


CRITERIA

APPLIED?, YES OR NO

(mark )

OP/BP. 4.10: Indigenous People

Does the subproject affectethnic minorities? YES NO

The subproject has prepared the Ethnic Minority Development Plan to apply.


CRITERIA

APPLIED?, YES OR NO

(mark )

OP/BP 4.11: Physical Cultural Resources

Physical cultural resources include movable or immovable objects, sites, structures, groups of structures, natural features and landscapes that have archeological, paleontological, historical, architectural, religious, aesthetic or other cultural significance Will the project cause temporary or permanent relocation or any other type of impact on physical cultural resources known to be of local, regional or national significance based on national or Provincial lists, proposed national or Provincial lists and/or identified during public consultation with local affected groups?

YES □ NO

Are any physical cultural resources considered especially important or sensitive particularly to local groups (e.g. gravesites)?

YES □ NO

Are chance find procedures in place?? YES NO

If the answers to Question 1 and 2 is YES, OP/BP 4.11 Apply and the subproject is NOT ELIGIBLE for refinancing .

YES □ NO



* The subproject causes no impacts on people houses, so it’s not necessary to relocate.


CRITERIA

APPLIED?, YES OR NO (mark )

OP/BP. 4.12: Involuntary Resettlement 1. Is any land used by people/organizations likely to be acquired as a result of the subproject?

YES NO

2. Will any subproject activity involve restrictions of use on adjoining land?

YES □

NO

3. Is land ownership affected by the subproject? YES NO

Will there be a loss of land ownership of local people/organizations?

YES NO

Will there be a loss of housing? YES □

NO

Will there be a loss of assets (e.g. crops, trees, fixed assers)?

YES NO

Will incomes and livelihood of local people be affected? YES NO

Will there be a loss of infrastructure, services and resources?

YES □

NO

Will there be a loss of job or business? YES □

NO

Will any social or economic activities be affected by land use related changes??

YES NO

Will there be a loss of common land, grazing land, fishing area of local community?

YES □

NO

Will there be a loss of medical stations, cemeteries, pagodas, community centre or local traffic roads?

YES □

NO

Will local people’s access to drinking water source, water supply system, internal roads, power source and other energy sources be affected?

YES □

NO

Basing on the above screening criteria to assess whether it need to apply the Policy OP 4.12 and make Resettlement Plan. *

YES NO



ENVIRONMENTAL SAFEGUARD SCREENING CRITERIA

APPLIED?, YES OR NO

(mark )

* Remark: “Change find” procedures are included in EMP, specifically, steps and process are undertaken to implement in case of finding cultural/historical works during construction phase.

OP/BP. 4.37 Safety on Dams

1. Is the dam height is 15 meters or greater ? YES NO

2. Is dam storage 3 million cubic meter or more ?

YES NO

3. Is dam height between 10 and 15 meters but the dam presents special complexities (for example large flood-handling requirement, location in a zone of high seismicity, foundations that are complex and difficult to prepare, or retention of toxic materials)? ?

YES NO

4. Is the dam expected to become a large dam during the operation of the facility ?

YES NO

5. Basing on the above screening criteria to check whether the subproject is considered to be a large dam and a Dam Safety Assessment will be required?

YES NO




CRITERIA

APPLIED?, YES OR NO

(mark )

* This subproject is located on the Srepok river. The Srepok River is a major tributary of the Mekong River. It runs from the Dak Lak Province in the Central Highlands of Vietnam through the Ratanakiri and Stung Treng Provinces in Cambodia to join the Mekong near Stung Treng town. Therefore, this policy is triggered for the subproject. Compliance with general safeguard policy The subproject complies with the above general safeguard policy of the

WB?

YES

NO □ Based on the above evaluation it can be concluded that the subproject can be classified as B category for environmental purposes according to the Bank safeguard policies.

OP/BP 7.50 International Waterways

The objective of OP/BP 7.50 is to ensure that WB-financed projects affecting international waterways would not affect relations between the WB and its Borrowers and between states and also not affect the efficient utilization and protection of international waterways. It applies to projects that involve the use and/or potential pollution of international waterways. OP/BP 7.50 does not apply to run of the river hydro projects. Is the hydro project the first hydro project downstream from a boundary with another upstream country??

YES □

NO

Is the hydro project the last project in Vietnam before a boundary with another downstream country??

YES □

NO

Will the project utilize water from a river or river tributary that forms a border with a neighboring country??

YES □

NO

Will the project discharge water into a river or river tributary that forms a border with a neighboring country .

YES

NO □

In case of a biomass project, does the biomass project discharge water into a river or river tributary that flows to a neighboring downstream country?.

YES □

NO



TABLE D: CONSIDERED ENVIRONMENTAL ISSUES AND EMP REQUIREMENT

Considered environmental issues (remark: social issues are mentioned in other

part)

Environmental issues mentioned in EIA or

EPC? Yes or No (mark )

Considered issues are dealt with in EMP? Yes

or No (mark )

Monitoring or requested activities

YES NO YES NO Air quality affects local community?

Causing noise?

Causing dust?

Location in earthquake aftershock or geotechnical unstable area?

Impacts on protected areas? Impacts on migration or immigration of rare species in the risks of threatening or extinction?

Impacts on biodiversity?

Impacts on downstream?

Impacts on environmental flows?

Impacts on water quality of downstream?

Impacts on fish or aquatic species?

Impacts on outside areas of the subproject area (ex. making reservoir, mobilization yard)?

Impacts on landscape?

Impacts on cultural resources? Causing erosion and sedimentation during



Considered environmental issues (remark: social issues are mentioned in other

part)

Environmental issues mentioned in EIA or

EPC? Yes or No (mark )

Considered issues are dealt with in EMP? Yes

or No (mark )

Monitoring or requested activities

YES NO YES NO construction? Building new access roads?

Building workers’ camp? Carrying out required procedures when discovering importantachaeological or cultural works which have not been restored yet?

Preparing waste management plan (waste water, solid waste, exhaust, toxic waste)?

Preparing environmental rehabilitation plan? Preparing declaration plan and incident prevention plan in case of environmental problems or risks?

EMP and environmental protection measures defined as part of contract terms?

Carrying out EMP monitoring and supervision procedures?

Preparing EMP cost estimation and schedule? Any concerns regarding the subproject mentioned in EIA or EPC and the above issues need to be solved?



1. INTRODUCTION EMP of Hoa Phu Hydropower subproject has been prepared as a result of the

environmental safeguard policy assessment of the proposed subproject “Hoa Phu Hydropower Plant” at Dak Nong province submitted for investment from the Bank under REDP. The assessment was implemented to confirm that the subproject is in compliance with requirements on Environmental Impact Assessment of Vietnam as well as environmental safeguard policies of WB.

EMP of Hoa Phu hydropower subproject presents principles, process and measures used for controling and minimising impacts on the environment and society of all activities of construction and operation relevant to the subproject development. EMP also supplement to the Supplement Environmental and Social Impact Assessment (SESIA) of the subproject to ensure commitments of Tam Long Power J.S. Company minimising Environmental and Social impacts regarding to the subproject and will be carried out throughout the subproject phases.

EMP is also a document with the Resettlement, Livelihood and Ethnic Minority Development Program (RLDP) established to mitigate resettlement impacts and prevent or mitigate social impacts from the subproject. RLDP is a general program including Resettlement Plan (RP) and Ethnic Minority Development Plan (EMDP). This EMP includes : the subproject description, policy framework, applied environmental regulations and standards, potential negative impacts, proposed mitigation measures that will be carried out before and during construction and in operation periods. EMP also consists of Environmental Codes of Practice (ECOP) incorporated in the bidding documents and contracts and accompanied with environmental monitoring.

According to regulation of the Government of Vietnam, the subproject has to make EIA report. EIA of the subproject has been approved under Decision 1811/QD-BTNMT dated 17/09/2009 by the Ministry of Natural Resources and Environment.

As a commitment for attaining the highest environmental and social efficiency for hydropower projects, Hoa Phu hydropower subproject must ensure the following:

- Meet all Environmental and Social conditions relevent to the subproject approval;

- Develop, speed up and strengthen the common reponsibility in the subproject environmental and social activity;

- Enhance awareness and knowledge of environment for workers and contractors by training, identify role and responsibility in environmental and social management and attach the subproject efficiency to the general environmental efficiency;

- Encourage to enhance awareness of sensitive aspects of culture and society at local community and the importance of the subproject impact mitgation to local lifestyle and culture;

- Monitor the efficiency of environmental and social activities during the subproject implementation and conduct adaptable management methods for continuous improvement;

- Coordinate with local community and relevant stakeholdersof the subproject to ensure they can get benefits from the subproject implementation; and



- Commit itself to information disclosure and consultation with local related parties throughout the subproject phases. 1.1. Main characters of the subproject

Hoa Phu HPP has a dam site to be located in Srepok river with a basin area of 8,680 km2, 4 km far from highway No.14 towards the Northwest, with an installed capacity of 29MW. The subproject area has smooth and flat topography, road accesses to the project, and material sources for construction is plentiful. Hoa Phu HPP construction will contribute to eco-society development enhancement in Hoa Phu and Tam Thang communes in particular, Dak Lak and Dak Nong provinces in general. 1.2. The subproject financier

The subproject is proposed to be refinanced under REDP with loan from the WB. 1.3. The subproject objectives

The subproject aims at: Meeting the power demand of local people; Contributing a significant partto the provincial budgetthrough tax payment

when the subproject comes into operation; Strengthening the support on industrial and small scale industrial

development in the areas; Createing jobs, contributing to poverty alleviation and bringing benefits to

local labours, companies and general socio-economic development in the locality.

Hoa Phu subproject has installed capacity of 29 MW. It will annually provide the national grid with an output of 132.5 million kWh and contribute to reduce the power shortage for the demand of national economic development.

(Remark: According to project on National power development plan in phase of 2011-2020 viewing towards 2030 made by the Energy Institute on October 2010, forecast of electric load for economic development sectors was 108,880GWh in 2010 and will be 194,304GWh in 2015, corresponding to maximum capacity demand of 16,048MW in 2010 and 30,803MW in 2015. Average production growth rate in period of 2011 - 2015 is 14,0% (baseline scenario).

According to power supply construction plan, the expected supply capacity in period of 2011 - 2015 is 22.890MW, short in comparison with the demand of about 7,913MW, not including contingency. Therefore, Hoa Phu hydropower subproject construction with a capacity of 29 MW and an output of 132.5 million kWh will contribute to the reduction of the electric shortage for the economic development demand of the country).

In the context of the increasingly complex and acute climate change, the subproject construction does not only meets the electrical demand for the economic



development but also contributes to the reduction of the greenhouse gas emission of about 68,260 tons of CO2/year in comparison with using fossil fuel to generate electric. 1.4. Responsibility in EMP preparation

The subproject Developer is responsible for making and implementing EMP. An independent environmental consultant expert will support the Developer on making EMP according to the draft environmental safeguard policy framework under the REDP loaned by the WB. 2. THE SUBPROJECT DESCRIPTION

Hoa Phu hydropower subproject is planned to be built on the Srepok river

rangeing from about 12039’00” to 12039’10” degrees of north latitude, from 107054’30” to 107054’40” degrees of east longitude, about 20km far from Buon Ma Thuot city to the Southwest as the crow flies. Reservoir and work route are located in area of Hoa Phu commune, Buon Ma Thuot city, Dak Lak province and Tam Thang commune, Cu Jut district, Dak Nong province.

Geographic Coordinates of the Site : - X=1398680,806 - Y= 435906,257 (VN 2000) The construction site is located on the Srepok river, within the 11 km long

section from Buon Kuop HP plant to Dray H’Linh HP plant, on a basaltic cliff of 3 m height and 100m width. The subproject is 3 km far from Dray H’Linh hydropower plant towards the upstream and 8km far from Buon Kuop hydropower plant towards the downstream.

There are no temples, pagodas, historical-cultural sites and other sensitive areas need to be protected in the area of land acquisition for the subproject construction.

The subproject location in the connection with surrounding subjects is shown in Figure 1, 1A and 1B.. 2.1. Location of subproject



2.2. Summary of the subproject

Table 1: The key parameters of the subproject

No. Parameters Unit Value 1 2 3 4 I Characters of basin 1 Area of basin Km2 8680 2 Length of main river Km 190 3 Long-term average rainfall mm 1800 4 Long-term average discharge (Q0) m3/s 238 5 Total long-term average flow 106 m3 7493 6 Design discharge according to hydro-year Qp=10% m3/s 333 Qp=50% m3/s 229 Qp=85% m3/s 154 7 Flood peak discharge P=0,1% m3/s 11400 P=0,5% m3/s 8480 P=1% m3/s 7210 P=1.5% m3/s 6650 P=5% m3/s 4660 P=10% m3/s 3710

II Reservoir 1 Full supply level (FSL) m 302,00 2 Minimum operating water level (MOWL) m 301,30 3 Maximum water head corresponding to tested

flood P=0.5% m 306,83

4 Maximum water head corresponding to designed flood P=1.5% m 305,89

5 Total storage volume (Wtb)) 106 m3 5,01 6 Effective storage volume (Whi) 106 m3 1,00 7 Minimum operating storage volume (Wc) 106 m3 4,00 8 Reservoir surface area corresponding to FSL Km2 1,60

III Discharge through powerhouse 1 Firm discharge Q(90%) m3/s 87,82 2 Maximum discharge Qmax m3/s 438,3

IV Water head through powerhouse 1 Maximum water head (Hmax) m 10,3 2 Minimum water head (Hmin) m 6,0 3 Average water head (Htb) m 8,14 4 Rated water head (Htt) m 7,50



V Downstream water head 1 Max. downstream WH corresponding to

tested flood frequency p = 0.2% m 300,0

Max. downstream WH corresponding to designed flood frequency p = 1.5%

m 299,15

2 Downstream WH when turbine operates at Qmax, 2 generating units.

m 293,72

3 Min. downstream WH when being discharged at 0,25 Qmax of one unit

m 291,65

VI Capacity 1 Installed capacity (Nlm) MW 29 2 Firm capacity corresponding to P= 90% MW 5,98

VII Electricity 1 Yearly average output Eo 106kWh 132,5 2 Number of hours using installed capacity hour 4568

Table 2: Scale of the subproject items No. Items Unit Value 1 2 3 4

I Pressure route

1 Rolling weir

- Structure Homogenuous soil dam

- Crest elevation m 307,0

- Highest height m 12,0

- Length from crest m 384,5

- Crest width m 5,0

- Upstream slope 2

- Downstream slope 1,75

2 Spillway

- Tested discharge with P= 0,5% m3/s 8480

- Designed discharge with P= 1,5% m3/s 6550

- Top width of spillway m 442,2

2.1 Free spillway

- Structure Reinforced concrete





No. Items Unit Value - Number of spillway chamber chamber 1

- Length of spillway chamber m 384,0

- Width of navigation chamber m 382,5

- Spillway threashold elevation m 302,00


- Highest height (from the crest) m 11,5

2.2 Spillway with valve gate

- Structure Reinforced concrete



- Length of spillway m 58,2

- Number of spillway chamber chamber 6

- Navigable dimensions of spillway chamber (B x H) m 8 x 6

- Spillway threashold elevation m 296,0


- Highest height (from the crest) m 13,05

II Power route

1 Letting-in canal

- Letting-in channel starting point elevation m 297,5

- Width of letting-in canal m 60

- Length of letting-in canal m 160,45

- Letting-in canal slope 0.465%

2 Hydropower Plant and water intake

- Threashold elevation m 279,595

- Number of gate hole hole 2

- Navigable dimensions of repairing valve gate (BxH) m x m 10,65 x 11,51

- Navigable dimensions of trash rack (BxH) m x m 10,65 x 20,90

- Navigable dimensions of the plant upstream operation valve gate (BxH) m x m 9,90 x 9,90

- Turbine installing elevation m 285,35

- Floor elevation of substation room m 301,0



No. Items Unit Value - Installation room elevation m 301,0

- Crane installing elevation of substation room m 314,5

- Number of substation group group 2

- Plant dimensions (length x width x height) m 53,44x20x21,3

- Plant dimensions (length x width x depth) m 37,95x48,715x29,35

3 Discharge canal

- Hieght of the starting point of cannal bottom m 287,0

- With of canal bottom m 37,0

- Length of canal m 575

- Slope of canal bottom 0,0

4 Substation

- Voltage level kV 110

- Substation installing elevation m 301,00

- Substation dimensions (length x width) m x m 58m x 28m

The subproject components

Hoa Phu hydropower plant is a submerged water power plant with main items are as follows:

- Head works’ group: water reservior; flood spillway without sluice gate, sand and flood spillway with sluice valve, rolling weir (by earth). Head works’ group makes a water reservior with capacity of 1,000,000m3 for daily regulation.

- Energy works: Water canal leads to unloaded voltage plant, hydraulic tulb turbine; water discharge canal;

- Other works: transmission lines; switchyard; access roads; operation house... Position and scope of every item is as the Figure 2 in attached appendixes.

a. Rolling weir The left rolling weir is located on the left abutment and connected to a free

spillway that is 384.5m long, leveled by homogeneous soil. Compactness of dam and homogeneous soil dam is K ≥0.95, the highest level of

the soil dam is 11.3 m. Along the top of dam, it is 384.5m in length. The width of dam crest is 5.0 m. The altitude of dam crest is 307.05m. Dam crest is comprised of macadam stabilized aggregate with the thickness of 18cm, the width of 3.5m. Every side (two sides) is 0.75m width with macadam layer of 3cm. On the dam is placed signal rods with span of 5m in upper and lower areas.

Upper side of the dam m = 2.0 is reinforced by caulked stone layer with thickness of 0.25 m overlaid macadam layer of 0.15m and sand layer of 0.15m. The upper side section from rolling weir to cross section D34 with length of 48.46m is



reinforced by composition of mortared stonework of M100, thickness of 0.25m because of torrent to spillway.

Lower side of the dam m = 1,75 is reinforced by grass cultivation on fertile soil layer of 5cm, base of dam is placed drainage ditches. The section from spillway to cross section D34 is 48.46m in length, reinforced by mortared stonework of M100, thickness 0.25m overlaid macadam layer of 0.15m and sand layer of 0.15m within the altitude of 304.7m from cross section D32 to D34. Lower side of the dam from cross section D34 to D40 with length of 90.0m is reinforced by tile-stone, thickness of 0.25m overlaid macadam layer of 0.15m and sand layer of 0.15m within the altitude of 303.4m for the section from cross section D34 to D36 and 30.0m for the section from cross section D36 to D40.

The spillway is bordered to the rightside by the canal bank leveled by homogeneous soil with K ≥0.95. The highest level of the dam is 10.5m. Length of the canal bank from the top is 260m. Width of the dam’s top changes considerably from 7.5m to 38m. The altitude of dam’s top is 307.50m.

The upper side of the dam partly is side of the letting-in canal foundation and partly is levelling soil with the same value of m=2.0 and is partly reinforced by concrete, thickness of 0.15m overlaid macadam layer of 0.15m and sand layer of 0.15m.

The lower side of the dam m=1.75m is reinforced by grass cultivation. b. Flood spillway Whole flood spillway is placed on river-bed, such as: spillway without sluice gate

in center of river-bed, sand and water spillway with sluice gate in right bank between energy works and free spillway without sluice gate.

Free flood spillway is placed in center of the river-bed, connected to spillway with sluice valve on the right and soil dam on the left.

The width of free spillway is designed with the width of the river-bed of 384m and the spillway is placed in center of the river-bed.

Spillway surface is design according to Ôphixêrôv type with water pressure head of Hđh=2m, concrete for spillway surface is M200R28, curved surface of spillway is smoothed to meet the demand of F3 surface technical requirements suitable with constructing conditions.

In the end of curved surface of spillway, at the altitude of 297m there is a vertical step of ladder to stone base and free spillway here has the altitude of dam’s bottom of 295,5m. According to the calculation result on subsidiary dam and spillway with low water pressure head as well as with high tail water level, it is suggested to keep existing situation of bed-rock without concrete reinforcement.

Spillway with sluice valve combined with sand discharge: In order to ensure the capacity of discharge, Consultants have designed bottom

outlet spillway combined with sand and mud discharge. Spillway with sluice valve is placed on the left bank of the dam with total length of 58.2m with navigation clearance length of 48.0m.

c. Head flume



Flume system is about 180.0m in length, includes: the first section is head section with the length of 120m that the altitude of canal’s top is 297.5m, the slope of canal’s bottom is 0.25%, the width of canal’s bottom is 60m; the second section is next to the canal with the length of 50m, the canal’s bottom is slope with ratio of m=3, the canal’s bottom width changes from 60m to 28m.

Outside of flume system is reinforced by concrete slab, thickness of 0.15m. The section of inlet canal next to the plant is reinforced by concrete slab, thickness of 0.12m, the roof of canal in stone is gunited with thickness of 0.05m.

Ratio of canal’s roof in soil is 1:2, in decayed rock IB is 1:1 and in zone IIA is 1:0.5.

d. Water intake Water intake is built by steel reinforced concrete and placed close the

hydropower plant. Lower wall of water intake is also upper wall of the plant. Water intake at the right bank there are two water intake compartments for two hydraulic turbine alternators, the altitude is 279.595m, the top altitude is 307.50 m, the bottom altitude of canal lead to water intake is 277.595 m. At water intake, there are sluice valves, repaired valve and trash rack. Concrete of water irrigation compartment and walls is M250R28W8. Base of water intake is placed on reliable one of IIA rock.

Water pipe leading to every hydraulic turbine alternator is built by steel reinforced concrete M250R28, connected from water intake to the power generator, dimension of every compartment is B x H = 10.60 x 11.51m.

The plant is placed on the right bank with the structure of steel reinforced concrete, two hydraulic turbine alternators - Bulb, capacity of 29 MW.

The altitude of antiflood floor of the plant is 301.00m (with P=0.5%). The altitude of generators, bridge crane, assemble compartment, generator’s compartment and the bottom of turbine’s hall are in turn of 285.35m, 314.50m, 301.00m, 301.00m and 277.65m.

e. Water discharge canal (tail escape) Water discharge canal is 580.0m in length, includes many sections such as: the

section connected directly to the plant is adverse slope one with m=5 and 35.0m long; the next section has bottom elevation of 287.0m, slope factor of i=0%, canal bottom width of 37.0m and the length of 380m; the section connected from the canal to Sêrêpốc river is adverse slope section from bottom elevation of 287.0m to 288.0m, canal’s bottom widen from 37m to 76m, the length of widen section is about 150m. The roof of soil canal is reinforced by concrete slab, the stone roof is gunite concrete with thickness of 5cm. The roof closed to the plant with the altitude within 288m is reinforced by concrete. Capacity of canal meets the water capacity of 438.3m3/s when returning the natural river.

Ratio of canal’s roof in soil is 1:2, in decayed rock IB is 1:1 and in zone IIA is 1:0.5.

f. 110kV switchyard 110kV substation is located at 300.80 m in height in lower section of the plant.



Outdoor distribution substation is (58x28)m with surrounding drainage ditches, gates and fences.

Communication, control and power cable with voltage levels of 10.5kV, 0.6kV are placed in cable trenches from distribution sub-station to the plant. Table 3: Total construction volume in years

In accordance with the schedule, the progress of Hoa Phu project is as follows:

No. Items Unit Volume

Total Year 2011

Year 2012

Year 2013

1 Soil excavation 103m3 572.62 377.60 134.32 60.712 Stone excavation 103m3 129.16 95.21 17.84 16.113 Soil levelling 103m3 143.41 18.53 60.88 64.00



No. Items Unit Volume

Total Year 2011

Year 2012

Year 2013

4 Stone levelling 103m3 21.06 5.11 8.62 7.33

5 Anchoring drill Φ76 for reinforcing steel m 8.41 8.11 0.00 0.30

6 Macadam 103m3 2.41 0.58 0.82 1.007 Sand 103m3 2.39 0.58 0.82 0.998 Concrete 103m3 51.20 26.49 12.33 12.369 Reinforced steel tons 2,081.64 1,471.41 549.60 60.6310 Stone 103m3 0.36 0.13 0.14 0.10

11 Hydromechanics equipment tons 1,184.90 256.31 928.59 0.00

12 Hydraulic power equipment MW 29.00

* Auxiliary works: a) Roads serve for construction - operation: Access roads serve for construction and operation

- Road from the position of Km No.5 to the project’s site (serving for operation - VH1) is internal road serving for construction and operation. This road needs to upgrade and enlarge for meeting the demand of project’s transportation. The road is 2,280m long with the total width of 6.5m, road’s surface width of 5.5m and made of mixture macadam with thickness of 0.35m. In the operation period, the road surface wide 3.5m will be overlaid by macadam aggregate and penetrative asphalt with thickness of 12cm.

- Road from VH1 to the plant (road No.VH2) is new one with length of 435.4m, foundation’s width of 6.5m, road’s surface width of 5.5m and made by utilised mixture stone thickness of 0.35m. In the operation period, the road surface wide 3.5m will be overlaid by macadam aggregate and penetrative asphalt with thickness of 12cm.

- Road from the plant to spillway (road No.VH3) is also new one. It is 296m in length, foundation’s width of 6.5m, road’s surface width of 5.5m and made by utilised mixture stone thickness of 0.35m. In the operation period, the road surface wide 3.5m will be overlaid by macadam aggregate and penetrative asphalt with thickness of 12cm.

- Road from existing path-way that connects the left bank to the left of dam’s top (road No.VH4) is internal one serving for construction and operation. It is need to upgrade and enlarge to meet the demand of transportation of the project. The road is 2,310m in length, foundation’s width of 6.5m, road’s surface width of 5.5m and made by utilised mixture stone thickness of 0.35m

Temporary roads serve for construction Total length of internal roads serving for construction is 1690m with 4 ones such as: TC1, TC2, TC3 and TC4.



Main parameters of internal roads are as follows: Table 4: The key parameters of OM road with in subproject site

Names of

roads Descriptions Length

(m)

Width of road’s

surface/ road’s

foundation (m)

Structure of road’s surface

1. Roads serving for construction and operation 5,321.4

VH1 Access road to the construction site 2,280 3.5/5.5/6.5

- Level mixture stone B=5.5m, thickness of 35cm - macadam aggregate and penetrative asphalt of 5.5kg/m2; thickness of 12cm, B=3.5m

VH2 Access road to the plant 435.4 3.5/5.5/6.5 - as above-

VH3 Access road to the spillway 296 3.5/5.5/6.5 - as above -

VH4 Access road to the left bank of soil dam 2,310 3.5/5.5 Level by mixture

macadam

2. Roads serving for construction 1,690

TC1 Road serving construction in discharge canal area 710 5.5/6.5 Level by mixture

macadam

TC2 Road serving construction in the end of discharge canal area 370 5.5/6.5 - as above -

TC3 Road serving construction in surrounding vertical dyke area 200 5.5/6.5 - as above -

TC4 Road serving construction in the left bank 410 5.5/6.5 - as above -

b) Electric supply system for construction - Electricity for construction of Hoa Phu hydropower plant is supplied by Đrây

H’Linh 12MW+16MW hydropower plant. - On the 22kV line of “475E56-Cư Jút, Đăk Nông”, at position of 89, build 22kV branch line with length of 2.5km in order to supply power for construction of Hoa Phu hydropower plant. - 22/0,4kV power network serving for construction: Along to 2.5km of 22kV main line, there are two new 22/0,4kV sub-stations with total capacity of 800kVA, these sub-stations are branched from 22kV main line and supply power for construction site.



c) Water supply system for construction Water supply for construction Water for construction is pumped from SêrêPốk river, in which: Water for the right side of the plant is pumped from upper section to treatment station through pipes with diameter of D=100mm, length of 545m; after treated, water is leaded to consume. Water for the left side of the plant is pumped from lower section to treatment station through pipes with diameter of D=100mm, length of 433m; after treated, water is leaded to consume. Water for the left side of the soil dam is pumped from upper section to treatment station through pipes with diameter of D=100mm, length of 246m; after treated, water is leaded to consume. Water supply for live activities Water is pumped from borehole. After treated, water will follow irrigation system to construction camps (houses) through pipes with diameter of D=50mm. At every camp (house) for 40 persons will be set up a water tank with volume of 10 m3. d) Camps, storages and other serving works:

Scope of camps/ houses, storage and other auxiliary works serving for construction are as follows:

Table 5: Scope of camps/ houses, storage and other auxiliary works

No. Items Technical specifications Area (ha)

1 Concrete factory No.1 45 m3/h 0.4

2 Concrete factory No.2 45 m3/h 0.4

3 Concrete factory No.3 (transition from the factory No.2) 45 m3/h 0.4

4 Steel mill 6 tons/shift 0.1

5 Wood factory 25 tons 0.1

6 Laboratory 0.1

7 Maintenance station and storage-yard For 20 automobiles 0.2

8 Combined assembly area of hydromechanics equipment 600 tons/year 0.3

9 Combined assembly area of hydraulic power equipment 700 tons/year 0.3

10 Machinery and materials storage of hydraulic power equipment 0.1

11 Fuel depot 20 tons 0.05

12 Backup power resource 400kVA 0.01



No. Items Technical specifications Area (ha)

13 Sub-stations 960kVA 0.01

14 Prefabricated concrete storage-yard 0.10

15 Sand storage-yard 7,500m3 0.2

16 Macadam storage-yard 10,000m3 0.3

17 Stone storage-yard 15,000m3 0.3

18 Stone storage-yard for build left dyke 7,000m3 0.15

19 Earth storage-yard for build left dyke 18,000m3 0.3

20 Earth disposal area 550,000m3 4.0

21 Internal water pump and treatment station 300 m3/day and night 0.02

22 Water pump and treatment station for live activities

40 m3/day and night 0.02

23 Houses and office of Contractors’ staff 40 persons 0.2

23A Construction Contractors’ office 20 persons 0.1

23B Office of Contractors assembling hydromechanics equipment 10 persons 0.05

23C Office of Contractors assembling hydraulic power equipment 10 persons 0.05

24 Houses of Contractors’ workers 200 persons 0.90

24A Houses of construction Contractors 100 persons 0.6

24B Houses of Contractors assembling hydromechanics equipment 50 persons 0.15

24C Houses of Contractors assembling hydraulic power equipment 50 persons 0.15

25 Houses and offices of Management Unit, Consultants, Experts (in management and operation area)

30 persons 0.50

2.3. Some images of the subproject location Status of vegetation cover and ecosystem of land area revoked for the subproject construction in the headworks and reservoir areas: There is a considerable gap regarding the vegetation cover in the subproject area between the wet and dry seasons: - In the dry season: due to the strong impact on natural vegetation and low coverage, water holding capacity of soil is low with small rainfall (only accounting for 10 - 20% total annual rainfall, the highest average daily rainfall in 24 hours not over



10mm), deep underground water at 15-17m depth (while in the wet season it is at 5-7m depth – for the weathered cover developed on the penetration magma rock). Therefore, in the dry season, soil is waterless so it’s uncultivated. Shrubs and wild grass grow rapidly replacing the cover of agricultural trees. - In the wet season: beside natural vegetation (grass-plot, shrub), the flora is enriched by agricultural trees, especially annual trees such as corn, sugar-cane, bean and vegetables. Thus, there are no rare animals and plants. Wildlifes are mainly small one with a wide distribution scale such as Passeriformes, Sylviidae, Rattus Rattus, Rattus flavipectus, Bufo melanostictus, Hoplobatrachus rugulosus, Rana guentheri, Rana macrodactyla, Xenochrophis piscator and domestic animals such as chicken, pig, dog, … * Some photos of vegetation and ecosystem oinland area revoked for the subproject construction in the headworks and reservoir areas:



• Some images of temporary houses and structures at acquisition area for the

subproject



2.4. Summarized assessment of the compliance with the WB policies Table 6: General assessment of the compliance with the WB safeguard policies

No. Safeguard policies Applied or unapplied General compliance level

1 Policy OP/BP 4.01 on Environmental Assessment

Applied. EMP is made and implemented

Comply

2 Policy OP/BP 4.04 on Natural Habitats

Unapplied. As the subproject doesn’t affect any natural forest or natural conservation area as well as important habitat.

Not applicable

3 Policy OP/BP 4.09 on Pest Management

Unpplied since the subproject will not use hebicide, pesticide and other chemical products.

Comply

4 Policy OP/BP 4.10 on Ethnic Minority

Applied EMDP is made and undertaken to implement

Comply

5 Policy OP/BP 4.11 on Physical Cultural Resources

Unapplied. However, action plan in case of unexpectedly discover built valuable objects, the developer will apply.

Not applicable

6 Policy OP/BP 4.12 on Involutanry Resettlement

AppliedRP has been prepared and undertaken to implement by the developer.

Comply

7 Policy OP/BP 4.36 on Forestry

Unapplied since the planned subproject will be implemented along the existing roads and transmission lines and will not relevant to forests and their management, protection and use.

Comply

8 Policy OP/BP 4.37 on Safety of Dams

Applied. Dam has the reservoir storage of 3 million m3 or more.

Comply Bảng 1:



9 Policy OP/BP 7.50 on International Waterways

The subproject is on Srepok river. Srepok river is the main tributary of Mekong river. It flows from Dak Lak province at Highland of Vietnam through Ratanakiri and Stung Trung provinces of Cambodia and into Mekong river near Strung Treng town. The policy is therefore applied.

MOIT shall dispatch a

notification to all relevant

countries

GENERAL ASSESSMENT OF THE COMPLIANCE LEVEL WITH THE WB SAFEGUARD POLICIES

Basing on the above assessment, it can be concluded that the subproject can be classified into category B for purpose of environment according to safeguard policies of WB.

Comply



3. THE SUBPROJECT ENVIRONMENTAL AND SOCIAL ISSUES 3.1. Environmental issues Table 7. List of the subproject environmental issues No. Environmental

impacts Description

Preparation and construction phases 1 Land acquisition - The construction will acquire permamently a land area

of 748,890m2, including 726,124m2 agricultural land, 18,294m2 aqua cultural water surface, 22m2 traffic land and 4.450m2 sloping land (refer to Table 3.1 for detauls) - Total permanently acquired land area of 4.96ha for dumping waste soil and stone

2 Landslide, erosion and sedimentation of rivers, lakes

Risks of landslide and erosion at construction positions such as:

- Main dam construction area; - Dyke building area - Letting-in and discharge channel construction

area; - Plant building area; - Erosion from soil and stone gathering area;

Time likely causing impacts: - When excavating diversion channel; - When removing surface soil layer; - In wet season and heavy rains

- At the subproject area, in normal condition, landslide and erosion do not occur in heavy rains. - Vegetation cover in the subproject area is fairly well. Although there are not much big trees and no forests, there are many growed and wild plants cover the surface. - Landslide and erosion occur in a narrow scope and short-term when excavating diversion and discharge channels and removing the surface soil layer. - Wet season in Dak Lak and Dak Nong provinces mainly occurs from August to the first half of November and December. Due to the very high rainfall at the subproject area, on the time of rainy months, the Developer just carries out construction of the Plant items.- During construction of the subproject items, soil excavated from foundations of dam route, plant, discharge channel, OPY and soil and stones removed during constructing material exploitation … are just utilized partially (144.4,103m3, accounting for about 16% of total digged soil and stone amount), the rest (84%) are gathered at dumps. Volume of soil and stone moved to dumps from excavating foundations of the subproject



No. Environmental impacts

Description

main items is about 741.2,103m3. The whole volume is dumped at 2 sites: the rightside dump (737,103m3, position 20, figure 2) and the leftside dump (4.2,103m3, position 19, figure 2). Total land acquisition for the dumps is 4.96ha.

3 Impacts on water quality

- The sources of water pollution: Living waste water from workers’ camps Production waste water: equipment repairing area,

concrete mixing station; Waste water from cleaning sand and stone; Rain water sweeping away with eroded substances; Leaked petro and oil; Biomass flooded in reservoir

- Water is muddy and polluted by impacts of landslide and erosion at some constructing positions. - Rain water will sweep away with part of waste water, garbage and oil sludge … from living activities of workers, staffs and activities of construction, maintenance, and repairation. Workers’ camp is planned to build at the rightside of the dam where is very closed to surface water source (about 120 - 150 m). - Impacts on water environment and acquatic organisms, people’s health and other water users in the subproject and lowland areas: + When water is retained in the reservoir, organic substances (organism bodies), trees, small animals and insects living in and on land surface which are unable to leave the flooded areas will be disintergrated and cause water pollution at reservoir and lowland areas and affect aquatic organisms, people’s health and other water users. Impact level depends on the work of cleaning reservoir. - Land acquired for the subproject at both construction site and reservoir includes no forests but mainly farming land (wet rice, fruit trees, perennial industrial trees), a small area of scattered grass plot and shrub (unused land). And the rest is river land and special-use land. Therefore, before retaining water in the reservoir, the Developer should allows local people to harvest all agricultural products. So, flora remaining in reservoir is




Description

mainly grass plot and shrub. In order to protect water quality in reservoir and lowland of Srepok river in compliance with hydraunlic requirement and subproject good-looking, the Developer collects all and cleans the reservoir: collecting all valuable trees, their branches and leaves, gathering grass plot and shrubs under the canopy to be burnt or burried at the dump before water is retained in the reservoir. Remaining organic substances flooded in reservoir are tree root, litter, organic substances and animal living inside land, so they do not much impact the water quality of reservoir and lowland. - Habitants in the subproject area is not used to use river water for drinking or living. They get water from dug well for drinking. Therefore, the subproject activities can affectthe river water quality but do not affectthe drinking and living water source of local people.

4 Air pollution - Dust and exhaust emission are mainly caused by activities of soil and stone excavation and backfilling in areas of diversion channel, pressure tank + water intake and plant + OPY. Emission volume at land exploiting area is fairly large. However, constructing and exploiting activities occur uncontinuously, unfocused at the same time (especially for exploiting activities) so impacts are reduced. - Impact scope of material transportation is about 100m toward both sides of access roads. Impact scope of soil and stone excavation and backfilling, making construction stone and macadam is about 500m. Affected areas are construction areas of rolling weir, spillway, dyke, letting channels, pressure tank, … , As for blasting activity, range of influence is over 1.500 m (average excavation volume of500m3/day) but in a very short-time and will last 1 hour per day, 11:30 am to 12:00 am and from 5:30 pm to 6:00 pm. Therefore, impacts on air environment due to soil and stone excavation and




Description

backfilling, making construction stone and macadam, activities of material exploiting and material transporting are assessed to be at low level. - Dust and exhaust caused by construction activity of the subproject items do not only increase quantity of air polluting substances but also directly affectthe respiration and influence workers’ health.

5 Noise pollution - Sources of noise pollution: Construction equipment; Operation of concrete mixing stations; Blasting, boulder breaking, driller using

- EIA of noise pollution level at 50m far from noise source is 83 dBA; at 100m is about 77 dBA; at 150 m is about 73 dBA. Vietnamese standard allows from 70dBA (break time) to 75 dBA/ working time (according to calculation in commitment of the approved EIA standard). - Noise from blasting: Loud noise caused by blasting creates shakes from the place of mine explosion for foundation construction. Instantaneous intensity of noise caused by blasting can reach 80 - 95dB, even over 100dB. However, blasting time is short, usually from 11:30 am to 12:00 am and from 5:30 pm to 6:00 pm (during this period other activities stop working). Moreover, blasting scope at construction areas of dam route and plant is far from residential areas. So, impacts are considerably reduced. Construction areas of plant, water tunnel are outside of residential areas. Thus, noise impact is unconsiderable, in general. The application of mitigation measures can minimise these impacts.

6 Partial loss of vegetation

- Trees lost due to the subproject activities: Agricultural trees (rice, sugar-cane, cassava),

industrial trees (coffee, cashew, peper..), and fruit trees (banana, lemon, orange...) in the reservoir and plant area;

Natural shrub in the subproject area; - Reasons of flora loss:

Tree cutting, construction site making, camp building;

The reservoir will flood an area of 74.44ha/270.01ha. They are growing economic valuable trees (rice, crops, fruit trees, industrial trees and shrub, grass plot…);

- Cutting-trees are mainly shrubs and low valuable trees.




Description

No high ecological valuable trees are cut. - The subproject does not cause loss of natural forests, being either primeval or secondary forests.

7 Disorder of terrestrial fauna living

- Reason: Construction activities: working machines and

equipments, transporting materialsblasting, mining …

A large number of workers gathering in the area.

- There are not many wildlifes in the subproject area excluding some reptiles and rodents … - According to local people, no beasts appear and no hunting activities occur in the subproject area. - Thus, it can be said that the subproject causes no considerable impacts on terrestrial fauna.

8 Impacts on aquatic living

- Aquatic flora: according to survey results and collected documents, Srepok river, section from the Buon Kuop hydropower plant to the Srepok 4 hydropower plant, has some species of aquatic flora including Polygonum hydropiper L., Polygonum lapathifolium L., Potamogeton crispus L., Ceratophyllum demersum L., Vallisneria spiralis L.,… - Phytoplankton: Phytoplankton in Srepok river section from the Buon Kuop hydropower plant to the Srepok 4 hydropower plant consisits of 19 species of 4 phylums: Cyanobacteria (4 species), Bacillariophyceae (13 species), Chlorophyceae (1 species) and Euglenophyta (1 species). - Zoobenthos and aquatic insects: Zoobenthos: there are 14 species of Mollusca and Decapoa including: Decapoa Macrura, Decapoa Brachyura, Gastropoda, Bivalvia... - Fish fauna: Among species of fish, there are economic species such as Notopterus notopterus, cá ngựa nam Hampala macrolepidota, Osteochilus hasselti, Barbodes gonionotus, Cyprinus carpio, Mystus wyckioides, Bagarius yarelli, Bangana behri, Channa orienttalis, and Ompok bimaculatus,… In addition, there are also Rhinogobius giurinus, Monopterus albus, Mastacembelidae, Oxyeleotris marmorata, and Wallago leeri,…




Description

- When water becomes muddier due to the subproject construction activities, it affects living of aquatic flora and fauna; - However, construction schedule of dams, underground route and plant is not long and affected area is small and narrow, so the impacts are unconsiderable. - The river filling for the subproject construction (dam route) will set obstacles to the movement between upstream and downstream of aquatic organisms, especially fishes have custom of migration for reproduction and searching for food. - Hoa Phu hydropower subproject is located on hydropower ladder of Srepok river, between Buon Kuop hydropwer plant (operating) and Dray H’Linh hydropower plant (constructing) (section Buon Kuop – Dray H’Linh with 11km length). So, whether the Hoa Phu hydropower subproject is constructed, the movement of aquatic organisms and migrant fishes is stoped by hydropower plants of Drawy H’Linh, Srepok 3, Srepok 4 at the downstream and Buon Kuop at the upstream. Therefore, researching migrant fishes and proposing protection measures in this case is not significant in preservation.

9 Cause obstruction to traffic

- For road traffic: + When carrying out the subproject construction, some vehicles mobilized to transport machines, equipments and materials from other places to the construction site and internally transport materials at site increases vehicle density and quantity affecting on traffic activity of roads and can cause road-bed depression of roads to construction site and internal roads in the subproject area, concretely highway No.14, bridge No.14 and access roads. + At intersection positions with traffic roads (4 times): line stretching of connecting transmission line will cause obstruction to the traffic. - For waterway traffic: the connecting transmission line route crosses the Srepok river 1 time without circulation of waterway transports. Therefore, line stretching crossing the river causes no impacts on waterway traffic.

10 Effect on cultural and - There are no cultural and historical works in the




Description

historical works subproject area. So, no direct effect on them is caused. - Reservoir area is mainly natural river land, perennial crop land, fallowed land and agricultural land … without cultural and historical works.

11 Effect on natural reserves and national parks

- The subproject area is over 25km far from the Yok Don national park to the upstream and not located in buffer zone of the national park. So, the subproject causes no direct effect on the Yok Don national park.

12 Accidents related to mine explosion and construction

- The subproject will use explosive to break rock for foundation construction. Explosive transportation and construction of underground works using explosive will be potential risks on workers’ health and life. - Environmental incidents (landslide at foundation digging positions, at mining area, …): if contractors and workers do not comply with labour safety regulations and subproject safety methods, it will be economic damage and threatening to workers’ life.

OPERATION PHASE 13 Flow changed at about

2km of river section behind the dam

- Hoa Phu subproject is planned to be located between the Buon Kuop plant (upstream) and the Dray H’Linh plant (downstream), so operation regime of its reservoir is also suitable with that of the Buon Kuop at the upstream: unregulated regime completely depends on operation process of the Buon Kuop. With the daily water discharge to generate electricity, Hoa Phu subproject will have day and night regulation regime so the flow behindafter the Hoa Phu plant is more water in the generating time and less water in the reataining time without electric generating. However, right behind the discharge channel is the end of Dray H’Linh reservoir, the operation of Hoa Phu plant does not affect flow behind the lowland of Hoa Phu plant. - Impacts due to the subproject in letting-in channel shape (the plant is about 2 km far from the dam route): right behind the dam route is Ea Gan stream with an output of 5,4m3/s (approximate 5% of average output for many years) supplementing water output for river section behind the dam to discharge channel of the plant, so environmental flow at section of about 2km from the dam to the channel is still ensured.

14 Flow changed from the - There are some constructed and operated hydropower




Description

downstream behind the plant

subprojects on the whole Srepok river system of main flow including: Buon Kuop, Dray H’linh, Srepok 3 and Srepok 4. All of them are using water from the Srepok river and discharge back to the Srepok. No subprojects move the water to other river or basin. Therefore, in general, the Hoa Phu subproject with location between the Buon Kuop and Dray H’Linh plants causes no impacts on the flow of the Srepok due to no flow changes to other basins.

15 Water quality - According to existing documents, there are 4 constructed and operated subprojects on the main flow of Srepok river. Their reservoirs were cleared and cleaned before water accumulation in compliance with the approved EIA of the subprojects. With the method of reservoir cleaning mentioned in the EIA, water quality after water retention is ensured under existing Vietnamese standards on ensuring aquatic organism living and other using purposes. However, at the begining of water retention, there is a given increase in concentration of substances in water than pre-reservoir due to the remaining organic substances in the reservoir (including tree root, regenerative grass, creature body, small creatures living in and on land surface unable to leave the flooded area), humus and mineral salt substances in soil are disintergrated and breaking soil structure. - According to survey, measurement and analysis results, generally, water quality of the Srepok river section from the Buon Kuop to the Srepok 4 is relatively clean with most of parameters within limit, excluding the section passing Tam Thang industrial zone. The analysis results show that this section is polluted due to untreated waste water from the Tam Thang industrial zone. As a result, it causes the massive death of fish on the river section with a length of tens of kilometres (3 times in 2010 and 1 time in 2011 on May). According to interview, this situation usually occurs when the industrial zone discharge waste




Description

water with a large amount and the water level of the river is low when the ability in environmental self-cleaning is weak and the concentration of substances in waste water exceed the load capacity of the river water. - Area from the Hoa Phu subproject to the downstream no longer exist waste source from industrial production activities, so the concentration of substances is watered and gradually stable and reduce to allowed limit. The ability of self-cleaning of water is restored. * Hoa Phu subproject with a capacity of about 5.01 million m3 and an average flow rate of 229 m3/s will contribute to reducing the concentration of substances in water. However, in order to prevent from massive death of fish in recent time, prevent from pollution and ensure water quality and self-cleaning ability of the river section, we recommend local authorities and environmental management agency where the Tam Thang industrial zone located to request the induatrial zone management board to conduct environmental protection measures, collect and treat waste water and exhaust before discharge into the environment.

16 Air quality - The increase of water surface area and reservoir capacity possitively affects the local climate condition. Areas arround the subproject and central of Tam Thang and Hoa Phu communes will have a cooler climate and more beautiful landscape. - The cool weather is good for human health and good for maintaining bio-diversity in the area. - Besides, operation of the plant does not affect the air quality.

17 Impacts on flora - After the reservoir forming and water accumulation, the weather in the subproject area is cool with high humidity facilitating the development of the flora, trees and crops.

18 Impacts on fauna - After the reservoir forming and stability, animals trend to turn back to live near the reservoir area. However, the area of the dam and reservoir is near by farming land of people where occurs many activities and human appearance. So, the possibility of increasing animals coming back to live arround the reservoir rarely occurs.

19 Impacts on fish and aquatic organisms

- When the reservoir is formed, the flooded river section will change from river ecosystem to reservoir ecosystem. Some new aquatic organisms will appear.




Description

- Fishs eating phytoplanktons and organic humus will strongly develop.; - Initially, reservoir-bottom foundation is not stable so groups of molluscs such as clam, snail, mussel … not developed in the reseroir area. After several years, they will adapt to a new living conditions and will distribute along both sides of the reservoir. - The reservoir forming can be potential to develop aquaculture.

20 Cause erosion at lowlands of the Srepok river

- The subproject location has the end of reservoir right behind the discharge channel of the Buon Kuop plant, so the amount of water discharged from the Buon Kuop plant causes no impacts on riverside road at the lowlands of the Hoa Phu subproject. Right behind the Hoa Phu plant is the end of the Dray H’Linh reservoir so, basically, also causes no impacts on the riverside road.

Table 8: Area of acquired land

Commune Agricultural land (m2)

Aquacultural land (m2)

Sloping land

Traffic land Total (m2)

Tam Thang 223.403 3.299 4.450 22 231.174 Hoa Phu 502.721 14.995 - - 517.716

TOTAL 726.124 18.294 4.450 22 748.890

(Source: Survey results on March 2008 of Me Kong Construction Company)

Note: - Access roads of the subproject are upgraded based on existing public roads, not

to be newly built, so it causes no impacts on the land resourceresource of the communes.

- Land area affected by the connection transmission line is shown in the above table without calculation of the area under ROW coinsided with the existing Cu Jut-Dak Mil 110kV transmission line with 1.342 km length.



3.2. Social issues: Table 9. Social issues

Social issues DescriptionPREPARATION AND CONSTRUCTION PHASES 1 Direct effect on some

household’s living - The construction will acquire permanently a total land area of 748,890m2, including 726,124m2 agricultural land, 18,294m2 aquacultural land, 22m2 traffic land and 4,450m2 sloping land. No household has been acquired land more than 10% of the total land owned. - The construction will have impact on 45,896 trees & crops, 552 brushwoods and 1,457 clumps, 35,421m2 of short-rotation crops (see Appendix 2A and 2B) and other crops. - The construction will also affect 08 temporary houses, 01 eave, 01 cemented yard, 03 cattle sheds and hen-houses, 7,375 (m2) of fish pond and 01 water tank Total number of households having land acquired is 274. Specific in Tables 4.1, 4.2, and 4.3

2 Cause disorder to the normal living of the community due to the appearance of many external workers and conflict between the workers and local people

- It’s planned to have about 200 people including engineers and workers participate in the subproject construction at the peak of constructing period. - Differences in life style and income can be the reason of conflicts in the area. - Workers at site can bring some strange diseases and infect the people near the construction site. - Need of medical examination and treatment of workers pressurize local medical stations for equipments, medicines, physician staff and medical works,... - Impacts on the security on the area, management of local authorities, culture, customs and belief of the people under the subproject. - Crowded concentration of workers at site (mainly men), following people and free migrant people can lead to the illegal land trade, conflicts between labour groups, conflicts between contractors, conflicts between construction staff and local



Social issues Description people; arise social evils (drug, prostitution, gambling, ...); and make difficulties in security control. - Staff, workers, following people (family: wife, husband, chilren,...) and free migrant people come to the construction site make the inhabitant change in the subproject area, temporarily increase population density and number of people staying in the locality making difficulties for the population management and social management of the local authorities of subproject communes. - Workers at site come from different places with different culture, customs and belief. Therefore, there will be interference, exchange among cultures and it can even lose the existing local cultural characters, customs and belief. People in Tam Thang and Hoa Phu communes are mainly M’Nong, E De, Thai, ... with many of special customs and belief.

3 Increase of livelihood source and income for people in the subproject neighbouring areas.

- The concentration of a large number of workers at the subproject area will contribute to making income increase for people under the subproject such as supplying food for workers, transportation service, necessary products and other demands. - Contractors can hire local labours for some items of the subproject and pay salary to them.

OPERATION PHASE 4 Positive impacts on

local socio-economic development

- Strengthen electric for living and production and strengthen the stability of the whole system. Power of the plant (annual average output is 132.5 million kWh) does not only meets local consumption demand but also meets the increasing demand of the region and the country and strengthen the stability in electric supply of the whole system. The subproject completion and operation will importantly contibute to changing the look of communes and districts of Dak Lak and Dak Nong provinces in general and districts and communes in



Social issues Description subproject area in particular. Concretely: + Electricity for living is strengthened (lighting, running TV and radio) contributing to improving cultural and spirit life of the local people. + The investment of the subproject construction will positively change the economic structure of communes under the subproject and speed up the rural agricultural industrialization at the locality. - The subproject construction and operation also create some jobs for local labours. - Income from water tax also supplements to the province budget. - Maybe in the future, after the reservoir formation, the landscape will be more beautiful and become a leisure, cultural and sightseeing center for local people. - The subproject operation will form a landscape of lake by lake. This is a premise for tourism development. - The reservoir can permit to develop aquaculture in the future, create more jobs and increase income for labour.



Table .10: Total land area acquired

Commune Agricultural land (m2)

Aquacultural land (m2)

Sloping land

Traffic land Total (m2)

Tam Thang 223.403 3.299 4.450 22 231.174 Hoa Phu 502.721 14.995 - - 517.716

TOTAL 726.124 18.294 4.450 22 748.890

Table 11a: Affected trees and crops

Commune Advocad

o Pepper Cash

ew Coffee Banana Litchi Acacia

Tamarind

Tam Thang 125 29 381 13.018 2.738 1 1.146 22

Hoa Phu 30 117 2.463 6.455 84 4 1.036 62

TOTAL 155 146 2.544 19.473 2.822 5 2.182 84

Table 11b: Affected trees and crops

Commune Longan Guava Jack

fruit Bamboo (clump) Others

Short-rotation

crops (clump)

Short-rotation

crops (m2)

Tam Thang 187 75 23 223 10.450 807 54.514

Hoa Phu 3 255 59 191 37.913 1.701 119.140

TOTAL 190 330 82 414 48.363 2.508 173.654

The most affected trees and crops are those in harvest which shall be acquired permanently by the project. These will be compensated reasonably to the affected households.

Table 12: Affected houses and assets

Commune House, kitchen (m2)

Animal house (m2)

Well (each)

Pipeline (m)

Fish pond, water tank (m3)

Tam Thang 205 23 7 257 8.366 Hoa Phu 1.467 44 9 261 93.122

TOTAL 1.672 67 16 518 101.488



4. IMPACT MITIGATION PLAN

Tam Long Power J.S. Company will establish an Environmental and Resettlement Management Working Group (Environmental and Resettlement Working Group for short) to manage the works of environmental protection and resettlement of the subproject. The group will be consist of at least 3 staff.

The major duties on the environmental works include: i) supervise contractors on implementing environmental impact mitigation measures; (ii) implement biannually in the first 2 years the sample taking, water sample fixation and sending for analysis in Dak Lak province; (iii) monitor and propose methods to overcome the environmental unfavorable change (if any); and (iv) report on the environmental management to the district Department of Natural Resources and Environment, Provincial Department of Natural Resources and Environment and leaders of Tam Long Power J.S. Company and the WB.



Table 13. Environmental impact mitigation measures appicable for the Subproject

Contents Mitigation measures and impact control CONSTRUCTION PHASE – The implementation of environmental impact mitigation measures is a responsibility of the subproject Developer and Contractor

1. Selection of the subproject location The dam route location is selected basing on the following factors: Technical and hydrography conditions; Advoiding forested areas Should be at least 1 km away from the protective areas, national, provincial

or district parks Causing no impacts on the environment (the least acquisition of land, far

from residential areas, without causing loss of forest, preparation of convenient arrangement, etc.

Minimising impacts on social life of local people (the least acquisition of agricultural land, far from residential areas).

The subproject auxiliary works’ location is selected basing on the following principles:

Far from surface water sources, at least over 100 m; Far from residential land;

2. The subproject affected people • Carefully study the construction location, consult with local people for the best arrangement of construction site and the connection transmission line;

• Minimise land acquisition on area of land cultivating land; • Prepare suitable compensation; • Compensate in cash for structures and support cash on transportation for

households must remove their temporary structures, field watch-tower … In case



Contents Mitigation measures and impact control the people want to receive money, the subproject Developer will compensate in cash;

• Prepare compensation plan for household having land acquired, come to agreement with local authorities about compensation level and implement compensation for people;

• Further details are available in the Resettlement Plan and Ethic Minority Development Plan of the subproject.

3. Control of constructing and living solid waste during the construction phase

• The stone and soil left after leveling is used for making roads and other items such as dam, road, etc.

If they are not used up. • Due to many of sunken and uncultivated plots in the subproject area, remaining

stone ans soil will be arranged to dump at these places after an agreement with local authorities is made and gathered at the subproject dumps;

• Do not dump remaining stone and soil down to the river; • Arrange storage of construction solid waste and material (stone, sand …) far from

the surface water source at least over 100 m; • When the subproject garbage dump has not been built yet, living solid waste is

gathered in containers with caps and processed its stench to a given volume, then hire an existing garbage collecting service unit at the district and commune for burrying at a regulated place.

• The surface soil removed will be retained and covered to be utilized for soil embankment later.

4. Gather remaining trees out of the reservoir and construction site

• The remaining of trees after cutting will be gathered out of the subproject area to a place approved by the local authorities.

• Exactly set up landmark of the reservoir boundaries to identify clearly the amount



Contents Mitigation measures and impact control of plants need cutting; Absolutely do not cut trees outside of the reservoir boundaries;

• There are fruit trees, industrial trees, rice and crop cultivated by the people and shrubs and grass in the flooded reservoir area. Big and valuable trees will be cut and utilized by the people. Small ones and shrubs will be cut, gathered and dried for people using as firewood. Restrict burning at the reservoir area at the same time to prevent from air pollution;

• The developer will prepare burning plan to ensure no fire spreading to neighbouring areas (arrange burning places far from each other and far from areas outside of the reservoir …). Burning remaining biomass will be in compliance with the existing regulations on forest fire protection.

• In favourable condition and ensured safety (no construction activities, no transportation, no activities of mine explosion, water accumulation and not in the flood season, etc.), permit the local people enter to freely gather trees, products usable for their purposes. The developer will coordinate with local authorities during cleaning the reservoir. The developer will also check safety conditions before permitting people’s gathering all.

• Before carrying out reservoir cleaning, the developer will coordinate with fuctional agency and consultant to make a simple map on the flora covering to make a decision of areas need cleaning to ensure water quality of the reservoir when aacumulating water. Mark areas need cleaning.

5. Erosion and deposition • Build embankments and roads collecting sediments (in form of drain isolating stone and soil from neighbouring areas) to prevent from stone and soil run-off to stream. Focus on erosion and run-off control at construction areas of letting-in channel, discharge channel and plant.

• Ram to closely press the surface soil, pour rock with large volume arround the removed surface soil to prevent from erosion;



Contents Mitigation measures and impact control • The works of construction and soil and stone excavating and levelling will be

given priority to implement in dry season.

• Electric tower positions will be selected to avoid slide land (>30°). • In case slope plot is unavoidable, limit levelling at slope plots.

6. Manage traffic and transportation and operation of vehicles and constructing machines

• Request contractors to periodically check technical conditions of vehicles and machines. Only vehicles having enough technical certificates can participate in construction at site.

• Contractors will use access roads to transport materials to the subproject area after an agreement with the developer. Only vehicles with size and load suitable to access roads in the subproject area are permitted to be used to ensure not to damage roads and bridges.

• Contractors are responsible for repairing damages on roads and bridges due to the subproject material and equipment transportation.

• Contractors have to preprare methods of suitable traffic arrangement during the construction phase to avoid local traffic obstruction.

• Vehicles serving construction at site are not allowed to scatter mud and stone on roads. Trucks transporting materials must be covered by canvas. If scatter occurs, transportation contractors and truck owner are responsible for cleaning up.

• Set suitable signals at roads leading to the plant, construction site of the subproject items;

• Propagandize and enhance sense of complying with traffic safety regulations for drivers.

7. Manage petrol storage • Fuel tanks must be put on cemented impenetratable floor with collection ditches surrounded, be far away from water sources and inflammable and explosive sources.



Contents Mitigation measures and impact control • According to design, petrol storage is arranged far from flora, camps, material

storage and equipment and machine yard to limit effect when fire and explosion happen.

• Prepare timely fire fighting methods • Train and equip for rescue team. Medical tools and medicines for fisrt aid must be

available at site.

8. Manage harmful substances (fuel, oil, explosive, …)

• All materials in harmful group (acid, oil, organic solvent, …) will be stored on impervious land foundation (preferably lined with plastic) inside house with a good ventilation system and will be locked and fenced carefully when unused.

• Minimise keeping explosives at construction site. In case of necessary to keep explosive in a short time, the Company will keep in storage where is over 100m far from surface water source, far from residential area and camp and ask permission of Department of Industry and Trade for explosive use and store.

• Disclose to the workers about requirements of safety tools when working with harmful materials as well as provide safety parameters of materials. Disclose chemical safety list and paste safety regulations when working with dangerous chemicals.

9. Noise and vibration • Because the subproject is far from residential area, noise and vibration from machines and equipments mainly affect operators and workers working at site. In special case, if necessary to work at night , the subproject developer will report to local authorities;

• Only trucks transporting machines and equipments meeting technical standards can participate in the subproject construction;

In case noise intensity is more than 75 dBA, the developer will work with contractors to decrease the operation of machines to prevent from noise and vibration resonance to meet the permitted standards under Vietnamese Standards



Contents Mitigation measures and impact control (TCVN 5948:1998; TCVN 5949:1998; TCVN 6962:2001; TCVN 7210:2002, QCVN 27:2010/BTNMT) • Propagandize dirvers on the need of reducing noise in the local and only use

whistle if necessary; • Workers living in camps do not cause noise at night and rest time.

10. Dust • In the dry season, when it’s heavy rainy, the developer will water twice a day and more if necessary at following places: traffic-way near the dam route and traffic-way and access roads to the plant. The plant area without residents still must water to ensure site sanitary as well as workers’ health and people’s trees and crops along transportation roads.

• Trucks transporting materials must be covered by canvas to prevent from scatter and dust;

• Prepare surface consolidation method (gravel scatter, ramming) for temporary access roads during the subproject implementation. For the access roads without surface consolidation, usually clean surface dust and water (about over 1600m of access road at the plant area).

• New operation roads are consolidates with mixture stone utilized and formed by macadam. At the two sides of roads is parallel drains to collect water (about 4800 m of operation road serving the subproject construction and operation)

11. Living waste water • Living waste water from camps is collected and treated by self-destroying tanks at grade B under the QCVN 14 : 2008/BTNMT National Technical Standard on living waste water before discharged to the environment;

• Camp will be arranged a lavatory to ensure sanitary of environment and water source;

• Do not discharge untreated water to the environment



Contents Mitigation measures and impact control 12. Construction waste water • Collect oil amount arising from vehicle park, maintenance facility of vehicles and

machines. • Water leaking from foundation excavation area collected to collection pit is fairly

clean, so it is discharge to the environment or utilized for other construction works.

• Arrange water collecting drain, mud and sand sediment tank at areas of concrete casting, waste water with cement.. for sedimentation before discharge to the environment.

• During construction, quarterly measure following water quality standards: muddiness, COD, DO, BOD5 and oil to follow water quality change and propose overcoming measures if necessary. Environment group of Tam Long Power J.S. Company will carry out sample taking, sample fixation and analysis at a laboratory at fuctional units to analyse biochemical and physicochemical indicators. It’s planned to take 2 samples: one at the end of power route and one of waste water ay camp (for living waste water)

13. Cultural and archaeological heritages found during construction

During construction, if contractors unexpectedly disvocer any archaeological, historical and cultural heritages remaining underground, even finding graves, cemetery or monument works, they should: • Stop construction at detected place; • Take note, describe, take photo of the spot; • Protect the locale, do not allow anyone to damage or move away any objetcs;

appoint guard until management fuctional agencies (Department of Culture, Information and Tourism) take part in and manage. Commander at site is responsible for report to local management fuctional agency (within less than 24 hours);

• Local authorities and local Culture, Information and Tourism agency are responsible for protecting and preserving the locale before making decision on next works. If necessary, there will be initially preliminary assessment of the



Contents Mitigation measures and impact control archaeoli=ogists of the management agency. The importance of the found objetcs will be assessed based on relevant specialized criteria. They are can be aesthetic, historical, scientific, research, social or economic value criteria;

• Decision on how to deal with the dound objetcs and the locale is responsibility of local management agencies. They can develop plan to preserve, maintain and recover or acquire the objects for maintenance at a suitable place;

• Decisions of local authority agencies will be specific writing. The subproject construction can be continued only after the permission of local management agencies related to cultural heritage protetion.

14. Supply constructing materials (material gathering, concrete works, etc.)

• All construction materials will be supplied by contractors with legal certificates of practice and environment.

15. Safety during construction Contractor is responsible for protecting workers and neighbouring assets to prevent from accidents and incidents. The contractor is also responsible for complying with safety requirements regulated by the State and local authorities and carry out all required methods to prevent from problems. Specific works as follows: • Prepare training course of safety for workers before they participate in

construction works; • Provide them with individual safety tools (glasses, gloves, helmet, boot, mask,

etc.) and request them to use; • In each working shift appoint at least 1 person in charge of safety works; identify

main point area so that the safety staffs focus on monitoring and reminding workers to raise their awareness.

• Equip communication facilities to cope with emergency situations; • Request workers to read the list of technical parameters and safety operation

guidance when working with chemicals. • Ensure that working with materials containing asbestos and toxic chemical is

implemented by workers who are trained. • In case of heavy rain or emergency situation, stop all construction works.



Contents Mitigation measures and impact control • Prepare fire fighting equipments.

16. Manage sanitary, safety and prevent from desease infection at camp area

• Equip first aid kit for workers; • Establish a medical service group at construction site; • Prepare a car serving first aid in case of drive the wonded person to the district

hospital; • Follow sanitary rules at camp area; • Propagandize the workers on food hygiene and safety, using cooked food and

boiled water. Request the workers to use mosquito nets when sleeping. • Build toilets with septic tanks. • Usually gather garbage at the planned places far from rest and living areas of

staves and workers, then hire an environmental sanitation unit of Hoa Phu commune to collect to the required processing place.

• Dredge ditches, not let water stagnate to prevent from mosquito development. • Contractors are responsible for implementing program of detecting infection

deseases through sexual activity, especially HIV prevention program among workers.

• Contractors will present worker health protection in the bidding document; • Provide the media, healthy entertainments such as TV, volleybal, table-tenis…

Make a playground for workers 17. Labour regulations for workers • External workers must register temporary residence with local authorities;

• Foreigner workers must have work permit granted by Vietnamese functional authorities and must register temporary residence with local authorities;

• The subproject developer is responsible for issues related to worker management during their residence for the subproject construction;

Following activities are forbidded at site and neighbouring areas: • Tree cutting due to any reasons outside the subproject area; • Hunt, fish, trap or pick plant products in the area; • Violate, affect cultural and historical heritages; • Fire outside of camp area;



Contents Mitigation measures and impact control • Use gun (excluding those who are entitled to using safeguard gun); • Drink in working time; • Wash motobike, car or machine near stream or stream branch; • Implement vehicle and machine maintenance (oil change, filter) outside regulated

place; • Dump garbage at unallowed places; • Drive fast, overtake dangerously in the subproject traffic way system; • Work without labour safety tools (such as shoes, helmet); • Cause noise and unpleasant effects on neighbouring residential areas; • Not respect cultural characters and living customs of the inhabitants.

18. Rearrange all construction sites after the subproject implementation

• After each item completion, the developer and contractor will re-create the flora at its site in order to recreating landscape and preventing from erosion in the wet season;

• After the construction completion, the developer grows trees and greening (plant trees, grass) all of areas temporarily acquired for the subproject construction (stone and soil yard, worker camp…);

• After the construction completion, use the surface removed soil to recover the old site and grow trees for landscape re-creation;

• Associatively grow 3 kinds of trees: perennial trees, shrubs and grass. Give priority for growing indigenous trees at the replanting areas;

• Rearrange nice and clean site and landscape at the subproject area after the construction completion.

OPERATION PHASE (Responsibility of implementing environmental impact mitigation measures in the operation phase is of the developer – Tam Long Power J.S. Company)

19. Noise (from the hydropower plant) • Engines and operation devices should be designed to meet internaltional standards on noise ( about 80 dB tại at 1m away location).

• Equipment design and buying should propose required noise standards;



Contents Mitigation measures and impact control • Periodically supervise the noise outside of the plant fence; • Apply noise mitigation measures in the plant area.

20. Safety and regualtions for workers • Equip fire fighting equipments; • Prepare safety operation process; • Prepare first aid kit for on spot first aid; • Appoint staff doing safety works in working shifts; • Regulations for workers similar to those in the construction phase.

21. Flow change at the downstream area • Report the operation management unit of the Dray H’Linh hydropower and people at the downstream area on operation and water discharge regime of the plant.

• Comply with the approved operation process of the reservoir.

22. Water quality reduction • Clean reservoir before flood it to ensure the required water quality; • Build embankment, consolidate slice side at areas where have unstable geological

condition; • Build collection system of living and industrial waste water separately and treat to

meet the environmental standards before discharge into the environment; • Collect living garbage and transport to treating place meeting the standard (local

garbage dump); • Grow trees, re-create the former construction site surface to limit erosion and

protect water source. 23. Phytoplankton on the reservoir • In case of appearing many of phytoplankton making water muddy or making

nutrients in the reservoir increase, take this biomass out of the reservoir. Do not use herbicide and pesticide to kill the phytoplankton.

24. Reservoir sedimention • Grow trees at site after construction, recovery and re-create the surface to liit erosion and sedimentaion at the reservoir.

• Dredge the reservoir, discharge bottom mud if necessary at regulated place and



Contents Mitigation measures and impact control approved by local authorities.

25. Supervise, monitor and maintain the flora replanted in the subproject area

• Annually supervise, monitor and carry out required supports to maintain the flora replanted to recreate landscape and limit erosion.

26. Harmful substance management (fuel, oil, …)

• Similar to regulations at item 8



5. ENVIRONMENTAL MONITORING PLAN Table 14. Relevant parties in the environmental monitoring plan

No. Unit Main responsibilities Contents and report form

Frequency

1 Contractor - Apply mitigation measures proposed in EMP - Report to PMU on the applied mitigation measures.

- See Table 16 Monthly report to the subproject developer (Tam Long Power J.S. Company)

2 Local leaders and community

- Report on activities not meeting the environmental requirements

- When detecting issues that are unreasonable or not in compliance with the environmental requirements.

3 Staff of the Environmental, resettlement and technical group of Tam Long Power J.S. Company Long

- Observe and assess the environmental parameters in this EMP - Report to PMU

- See Table 17 Monthly report to the subproject developer (Tam Long Power J.S. Company)

4 Safeguard Independent Monitoring Consultant (SIMC)

- Observe and assess the environmental quality based on this EMP parameters. - Carry out community consultation meetings to get opinions and evaluation of local people on the subproject environmental management.

- See Table 17 Every 6 months, report to the subproject developer (Tam Long Power J.S. Company)



Table 15. Environmental monitoring plan

Contents Monitoring methods Monitoring positions

1. GIAI ĐOẠN XÂY DỰNG Select the subproject location (camp and auxiliary areas)

Observe following issues: - The subproject location – in area with human activities or without human activities;

- Camp and auxiliary areas

- Arrangement of: living water supply, waste water and solid waste;

- Waste water and garbage dumping sites

- Is the camp suitably arranged? - Camp area

Flora clearance and surface soil removing

Observefollowing issues: - The work of tree clearance implementation

- Tree gathering area after cutting;

- Are areas gathering soil removed from surface covered or applied with measure to prevent from erosion?

- Temporary storage of the surface soil; - Tree plating areas to recreate coverage and landscape

- Prepare landscape protection plan or conduct landscape recovery and protection measures or not?

- Work with the developer

Living and constructing solid waste management

Observe following issues: - Does the subproject produce residual stone and soil? - Do residual soil and stone affect water quality or cause obstruction on flow?

- Remaining soil and stone gathering dump

- Where do the contractor and developer store the surface soil? Is it covered and rammed to prevent from erosion?

- Surface soil storage




- Are the management and gathering of living garbage good? Do workers at the camp use local garbage collection service?

- Workers’ camp

Clearing the remaining trees out of the reservoir

Monitor by observation of following issues: - Check the diagram (map, simple sketch) designed by the developer about areas planned for tree clearance to clean up the reservoir; - Are cuttrees in the correct area?; - Collect and remove all economically valuable wood out of the reservoir or not? - Is the burning of remaining woods and leaves safely done?

- Work with the developer and supervise at the reservoir area

Erosion and deposition Observeand evaluate following issues: - Construction site - Are the construction works implemented in the dry season?

- Does the contractor arrange temporary measures to control erosion at places where can cause erosion? Does the contractor build drainage system??

- Areas with high risk of erosion

Management of traffic and operation of vehicle and machines serving the subproject

Supervise following issues: - documents certifying periodical services of vehicles and machines used for the construction; - Do the vehicles and machines used for the subproject cause traffic obstruction and damage on local roads? - Appoint staff for traffic instruction when the subproject activities affect traffic or not?

- Dam area - Plant area




Harmful substance management

Supervise and evaluate following issues: - Do harmful substance storages have unabsorbent floor? With or without roof ? Is locked and separated from neighbouring areas? - Check licences of Industry and Trade Departments of Dak Lak and Dak Nong provinces if the subproject store explosive; - Check the disclosure and providing documents of toxicity and safety operation guidance for harmful materials

- Work with the developer and check at stoarge

Noise Supervise and evaluate following issues: - Noise level at construction site (plant and dam areas) causes unpleasant effect on the nearest residential areas or not? - Interview people living in the nearest area and local authorities whether the subproject makes noise during rest time or in the evening. - Ask for the community opinions in case of working at night or not? - In case of complaint from people about noise, suggest the developer to measure the noise level and prepare appropriate methods to reduce

- The subproject area, the nearest residential areas, the subproject affected areas; - Interview people and local authorities

Dust Observe construction site and evaluate following issues: - Is watering to reduce dust fully done? - Are trucks transporting materials covered with canvas?

- Construction site - Trucks transporting the subproject materials on traffic ways




Water quality protection Observe and evaluate following issues: - How does the arrangement of living waste water collection and treatment at the camp? Prepare septic tank or not? - Directly discharge untreated living waste water into the environment or not? - Is the lavatory of the camp hygienic? - Is oil arising from operation and maintenance of vehicles and machines collected? - Build water collection and sedimentation drains before discharge into the environment at concrete station and waste water with cement areas or not? Waste water flows from construction site is collected or not? - Implementation and its results of periodical observation and measurement of water quality are conducted according to EMP and EPC or not?

- Camp area; - Stone grinding and concrete mixing areas; - Vehicle parking and maintenance area; - Work with the developer about water quality measurement documents

Safety Observe (combined with information collection on health and safety protection plan) following issues: - Does the health and safety protection plan meet the requirements? - Are workers provided with labour safety tools? Do they use them? - Are workers trained and disclosed safety informations? - Set dangerous signals and stick safety operation guidance for dangerous equipments and chemicals or not?

- Construction site, storage area - Interview contractors and work with the developer




Health care for workers - Are workers equipped with first aid kit? - Are drains arround the camp dredged and clean? Have mosquito-net when sleeping or not? - Workers are propagandized on enhancing awareness of using cooked food and boiled water and preventing from deseases infected through sexual activity or not? - Any cases of deseases happens? Do the workers approach the medical service at the local?

- Camp areas

Implementation of labour regulations for workers

- Assessment of the implementation of labour regulations for workers is shown in Item 18 of Table 5

Findings of cultural and historical heritages during construction

Observe, collect information and assess the following issues. If unexpectfully find valuable cultural and historical heritages, check whether it’s reported to management agency and it complies with the procedures.

- At areas where the excavation is being implemented - Interview contractors - Along the connection transmission line

- Any findings of valuable cultural and historical heritages during soil and stone excavation?

- Whether the process in case of unexpectfully finding cultural and historical heritages is available to be used for contractors.

- Location of cemeteries or structures valuable to local people

OPERATION PHASE

Noise Observe at site and interview surrounding people to assess the following issues: - Does the noise from the plant effect the people? Do they hear the noise?

- Ousite the fence of the plant




In case of finding the noise may exceed the allowed limit, use noise meter to check

- The nearest residential area

Safety and regulations for workers

Supervise and assess the following issues: - Equip fire fighting tools; - Check the implementation of regulations for the workers as mentioned in the Item 8 of Table 5.

- Plant area - Control house and workers’ accommodation

Reservoir water quality management

Supervise and assess the following issues: - Any erosion at the reservoir bank? If yes, any consolidation methods applied? - Is waste water collected and treated before discharging into the environment? - Is the reservoir water eutrophication? Does the developer take the phytoplankton (if many) out of the reservoir?

- Reservoir area; - Control house and workers’ accommodation

Harmful substance use and management

Supervise and assess the following issues: - Are harmful substances kept in safe condition? - Does the developer equip and provide information and safety operation process for harmful substance?

- Plant and storage areas



Table 16. Sample of on spot environmental management moniroting report (applied for the contractor) Project: Project location: Contractor: Report date: No. Impacts Implemented mitigation measures Remark Construction phase 1 Is the auxiliary works’ (camp, material

gathering dump, storage …) arrngement reasonable?

2 The work of surface soil removing? 3 Solid waste (remaining stone, soil)

management during construction

4 Living solid waste management at the camp 5 Transportation of remaining trees out of the

reservoir and construction site

6 Erosion and deposition 7 Management of traffic and vehicle and

constructing machine operation

8 Harmful substance management 9 Noise 10 Dust 11 Water quality protection 12 Safety works 13 Workers’ healthcare 14 Labour regulation implementation 15 Cultural heritages and achreology found

during the construction

Report maker: Position: Adress: Phone number:



Table 17. Sample of monitoring report on EMP implementation (Applied for the Environmental Observation Report of Technical Monitoring Consultant, Independent

Environmental Consultant - SMIC) Project: Project location: Kind of report: (Report of Independent Consultant or Technical Monitoring Consultant of the Company) Report date: No. Parameters Consultant’s assessments /

Community opinions Remark/Recommendations

1 Is the auxiliary works’ (camp, material gathering dump, storage …) arrngement reasonable?

2 The work of surface soil removing?

3 Solid waste (remaining stone, soil) management during construction

4 Living solid waste management at the camp

5 Transportation of remaining trees out of the reservoir and construction site

6 Erosion and deposition

7 Management of traffic and vehicle and constructing machine operation

8 Harmful substance management

9 Noise

10 Dust

11 Water quality protection

12 Safety works

13 Workers’ healthcare



No. Parameters Consultant’s assessments / Community opinions

Remark/Recommendations

14 Labour regulation implementation

15 Cultural heritages and achreology found during the construction

Operation phase

1 Dust

2 Safety and regulations for workers

3 Reservoir and river water quality management

4 Harmful substance use and management

Report maker: Position: Phone number:



Table 18. Requirements for the environmental report system

No. Issues The first reporting level The second reporting level

(One copy must be sent to the district department of environment)

Construction phase 1 Implementation of on

spot mitigation measures and environmental management

Executor: Contractor Report frequency: Monthly Report to: Tam Long Power J.S. Company

Executor: Tam Long Power J.S. Company Report frequency: Every 6 month Report to: WB, PMU

2 Environmental monitoring

Executor: • Staffs of the Environment and

Resettlement Group of the Company Report frequency: Monthly Report to: Tam Long Power J.S. Company

Executor: Tam Long Power J.S. Company Report frequency: Every 6 month Report to: WB.

Executor: • SIMC

Report frequency: Every 6 month Report to: Tam Long Power J.S. Company, WB

-

Executor: • Local authorities and people

Report frequency: When arising issues not meet the requirements of the subproject environmental management Report to: Tam Long Power J.S. Company

Operation phase



No. Issues The first reporting level The second reporting level

(One copy must be sent to the district department of environment)

1 Monitoring on environment and labour safety

Executor: • Staff of environmental management of

the plant • SMIC

Report frequency: annually in 20 year life-line of the subproject; Report to: Tam Long Power J.S. Company

Executor: Hoa Phu hydropwer subproject Report frequency: annually in 20 year life-line of the subproject; Report to: WB,



6. CAPACITY BUILDING PLAN OF ENVIRONMENTAL MANAGEMENT - In the subproject preparation phase:

o The Company has assigned staffs to participate in the training courses organized by the WB about the preparation of EMP report and public consultation.

- In the investment implementation phase: o The Company will assign staffs to participate in the training courses about

safeguard policy of the WB within the REDP framework. o Tam Long Power J.S. Company will establish an Environmental Management

Group of 2-3 part-time staffs. These staffs will participate in short-term training courses about the environment held by the local management agencies.

o Besides, the Company will buy books, magazines and documents for the staffs’ EMP information updating.

Table 19. Cost estimation of capacity building of environmental management No. Activities Cost (VND) CONSTRUCTION PHASE 1 - Assign staffs to participate in training courses

held by the WB 2 persons x 4,000,000 VND/person/time x 2 times

16,000,000

2 - Assign staffs to participate in training courses held by the local management agencies 2 persons x 1,000,000 VND/person/time x 4 times

8,000,000

3 - Buy books, newspapers, update information 6,000,000 SUM 30,000,000OPERATION PHASE 4 Investment cost for annual training during the

subproject operation (10,000,000 VND/year x 20 years)

200,000,000

TOTAL 230,000,000



7. ENVIRONMENTAL MANAGEMENT COST

Table 20. Cost estimation of EMP implementation (VND)

No. Items Construction Operation (with 20 year life-line)

1 Mitigation measures

This cost is included in contract with contractor

This cost is included in operation cost of the

plant

2 Moritoring cost (Implemented by member of the Environmental management group of the Company)

This cost is included in investment cost of the

subproject

This cost is included in operation cost of the

plant

3 Cost for hiring water quality monitoring in 2 initial construction years

4 times/year x 3,000,000 /time x 2 years = 24,000,000

VND

4 Cost for hiring SMIC*

Lump sum (2 times/year x 3 years x

20,000,000/time) = 120,000,000

Lump sum (1time/year x 20 years x 10.000.000 /time) =

200,000,000

Training cost 30,000,000 200,000,000

SUM 174,000,000 400,000,000 This cost is included in

operation cost of the plant

TOTAL FOR THE WHOLE SUBPROJECT

574,000,000 VND

* This cost is paid by Tam Long Power J.S. Company



8. COMMUNITY CONSULTATION

The following activities of community consultation and information disclosure have been implementing during the subproject preparation. Activity 1: Site survey. Activity 2: Meet and interview affected households, annouce the subproject construction plan, collect information associated with the compensation and the EIA. Activity 3: Carry out community consultation for getting opinions about the EMP, compensation and assistance in site clearance. - Community consultation meetings have been organized at Hoa Phu and Tam Thang Commune People’s Committees - Participants in the community consultation meetings include representatives of:

o Tam Thang and Hoa Phu Commune People’s Committees o Social organizations: Fatherland Front Committee, staffs of poverty alleviation,

Women’s Associatio, etc. o 274 households directly affected by the subproject

- Meeting holder: Tam Long Power J.S. Company - Program of the community consultation meetings is as follows:

o The Developer provided general information on the project, present the project’s EMP, Declaration on Attaining Environmental Standards; inform the community and affected households on the Compensation plan and Ethnic Plan.

o The developer asked for participant’s opinion on the completeness of the environmental impacts and the proposed mitigation solution;

o Participants contributed their opinions on EIA report and EMP; - Opinions of the meetings’ participants:

o The affected scale of the subproject is not large. Land acquisition of 274 households. None of them is affected on residential land and houses, so not have to relocate;

o Affected houeholds asked for cash compensation for the affected land and assets as per market price;

o Enviornmental impacts on fish, water source, vegetation cover, etc. were assessed as unremakrable;

o The developer should strictly implement the proposed mitigation solutions, with special focus on: dust; noise problems; soil and water pollution due to lubricants, oils from vehicles, wastes, gabbages from workers’ living activities...



Activity 4: Generalize collected opinions from the Activity 3, combine with and revise the EMP. Issues collected from the community consultation meetings have been added and updated to the EMP draft. Activity 5: Information disclosure and EMP approval - In order to meet the requests for information disclosure in the Policy OP 4.01, Tam Long Power J.S. Company – in the position of the subproject developer – will implement the following works:

• Provide the EMP report, compensation plan and summary document of the subproject investment report in Vietnamese at commune and district People’s Committee offices.

• Annouce on means of public communications about the disclosure of EMP, compensation plan, summary document of the subproject investment report

• Provide address and contact point so that the people can contribute their opinions for the EMP.

• The reports in English and Vietnamese will be sent to Infoshop of the WB at 63 Ly Thai To Str., Ha Noi City so that people and Non-Government Organizations (NGO) can approach, read and give opinions.

• The EMP report in English will be sent to the Infoshop of the WB for information disclosure.

Activity 6: Continue to get feedback and implement required revision of the EMP and compensation plan. - After the EMP and compensation plan disclosure at the above places, the developer will get feedback (if any), review and carry out required revisions to finish the reports.



9. CONCLUSION

Hoa Phu HPP has a dam site to be located in Srepok river with a basin area of 8,680 km2, 4 km far from highway No.14 towards the Northwest, with an installed capacity of 29MW. The subproject area has smooth and flat topography, road accesses to the project, and material sources for construction is plentiful. Hoa Phu HPP construction will contribute to eco-society development enhancement in Hoa Phu and Tam Thang communes in particular, Dak Lak and Dak Nong provinces in general.

The construction will acquire permanently a total land area of 748,890m2, including 726,124m2 agricultural land, 18,294m2 aquacultural land, 22m2 traffic land and 4,450m2 sloping land. No household has been acquired land more than 10% of the total land owned.

The affected scale of Hoa Phu Hydropower Project is not large. No household is affected on residential land and houses but only partially on farming land, so not have to relocate. No temple, graves and historical-cultural relics are affected. There are 43 households with structures affected by the construction including 1,736.28 m2

temporary houses, animal sheds, etc. , 101,478.33 m2 other structures, 498.8 m2 water pipe; 16 wells.

Main environmental impacts caused by the subproject includes: (i) farming land loss of the people; (ii) loss of flora; (iii) soil erosion; (iv) loss of the continuousness of the river due to the dam building; (v) declining of water at the section of 2 km from the behind of the dam to the discharge channel of the plant. Measures to mitigate environmental impacts, prevent and cope with the environmental problems have been developed and periodically monitor the impacts. Environmental and social negative impacts can be minimized to the acceptable level by fully implementing environmental and social management activities. Detail of these activities is presented in the EMP, RP and EP parts of the EIA report. Environmental benefits of the subproject includes: (i) to decrease power shortage for the economic development in the future, meet the demand of load at peak hour, increase the stability for the whole sysem; (ii) to be independent of the fuel price change; (iii) to emit less greenhouse gas; (iv) to contribute to the common development of the locality. Improving environmental protection and awareness enhancement is an important point in the subproject plan making to fully deal with the environmental impacts to the acceptable level.



REFERENCES LIST OF REFERENCE DOCUMENTS 1 The draft of the subproject RP – Tam Long Power J.S. Company

2 The subproject technical design - Tam Long Power J.S. Company

3 Source books of the WB;

4 EIA of the subproject

5 The subproject investment report - Tam Long Power J.S. Company

6 Environmental framework applied for the Vietnam REDP - WB 2008.

7 Statistical yearbook – Statistics Publisher;



LIST OF PEOPLE MET DURING THE EMP PREPARATION 1 Hoàng Phú Chairman of Cu Jut District People’s Committee

2 Nguyễn Minh Tuấn Chairman of Tam Thang Commune People’s Committee

3 Trần Vĩnh Cảnh Chairman of Buon Ma Thuot City People’s Committee

4 Y Doan Niê Chairman of Hoa Phu Commune People’s Committee

5 Nguyễn Văn Sơn Environmental Experts of the WB

6 Bùi Văn Hùng Chairman of Tam Long Power J.S. Company

7 Đỗ Thị Xuân Director of Tam Long Power J.S. Company

8 Bùi Ngọc Toàn Deputy Director, Manager of Planning and Technical Department of Tam Long Power J.S. Company

LIST OF MENBERS PREPARING ENVIRONEMNTAL MANAGEMENT PLAN

1 Trần Thanh Sơn Technical Energy and Environment PhD; Independent environmental consultants

2 Bùi Văn Hùng Chairman of the Board, Tam Long Power Joint Stock Company

3 Đỗ Thị Xuân Director of Tam Long Power Joint Stock Company

4 Bùi Ngọc Toàn Deputy Director of Tam Long Power Joint Stock Company

5 Hồ thống Environmental Bachelor of Tam Long Power Joint Stock Company



APPENDIX 1 SUBPROJECT MASTER PLAN


Kế hoạch quản lý môi trường (EMP) Trang 79

APPENDIX 2 SUBPROJECT ENVIRENMENTAL IMPACT ASSESSEMENT APPROVAL



APPENDIX 3

COMMUNITY CONSULTATION MINUTES



APPENDIX 4 DECISIONS OF DAK LAK PC ON ALLOTING LAND TO TAM LONG

POWER JSC FOR THE SUBPROJECT CONSTRUCTION



APPENDIX 5 THE SUBPROJECT CONSTRUCTION SCHEDULE

No. Items 2011 2012 2013 2014

4th Quarter

1st Quarter

2nd Quarter

3rd Quarter

4th Quarter

1st Quarter

2nd Quarter

3rd Quarter

4th Quarter

1st Quarter

2nd Quarter

3rd Quarter

1 Commencement 28/09

2 Bidding

3 Preparation

4 Foundation excavation of the energy route

5 Construction of the energy route

6 Construction of free spillway and spillway with valve gate

7 Construction of rolling weir, upper dyke, lower dyke

8 Contruction of electric distribution substation

9 Connection of transmission line to the Cu Jut 110kV substation

10 Items serving the construction



No. Items 2011 2012 2013 2014

4th Quarter

1st Quarter

2nd Quarter

3rd Quarter

4th Quarter

1st Quarter

2nd Quarter

3rd Quarter

4th Quarter

1st Quarter

2nd Quarter

3rd Quarter

11 Electric generating at transformer group 1

12 Electric generating at transformer group 2

13 The subproject inauguration

environmental management plandocuments.worldbank.org/curated/en/147521468130204101/...ppc province...

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