ELECTRICI TY OF VIETNAM

POWER COMPANY No-3

E533Vol. 24

SYSTEM EFFICIENCY IMPROVEMENT,I' QUITIZATION AND RENEWABLE PROJECT

I, NVIRONMENT IMPACT ASSESSMENT

FOR

RE I lABILIATION OF AN DIEM HYDROPOWER PLANT

Pre pared hy:

I'ON'ER ENGINEERING CONSULING CONMPANY No 1

Mar-ch, 2002

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SOCIALIST REPUBLIC OF VIET NAM

P ECC I ELECTRICITY OF VIET NAMPOWER ENGINEERING CONSULTING COMPANY I

Project: 43.01 Vol. 24

REHABILITATION AND UPGRADE PROJECTANDIEM HYDROPOWER PLANT

QUANG NAM PROVINCE

FEASIBILITY STUDY

ENVIRONMENTAL IMPACT ASSESSMENT REPORT

Senior Engineer :6 Van E)uc

Project Manager VD Sy Thu

Head of Hydropower Division 2 Nguyen Van Ton

Hanoi, - 3 -2002

GENERAL DIRECTOR

POWER ENGINE CONSULTING COMPANY1

LEQBA NH

LE BA NHUNG

TABLE OF CONTENT1. INTRODUCTION ...................................................... 2

1. 1. General Intro(luction on the Background of Power Development in the Project Area andRelevant Environmental Issues 2

1.2. Relevant Organization Structure 21.3. Purpose of the Report 21.4. Methodology 2

2. PROJECT DESCRIPTION ....................................................... . 32. 1. Project Properties 32.2. Map of Project Location 52.3. Resettlement 5

3. LEGAL BASIS, POLICIES AND ADMINSTRATIVE MANAGEMENT .......................... 63.1. Requirement from Lnvestor to environmental issues 63.2. Feasibility Study Report 6

3.3. Agreement on Project Site 63.4. Environmental Management System 63.5. Laws on Environment 7

4. DATA .... 84.1. Relevant Documents and Legal Basis about the Studied Area. 84.2. Operation Efficiency of the Plant 84.3. Purposes of the Rehabilitation and Upgrade Project of Andiem HPP 84.4. Present Situation of the Project Site 94.5. Present situation of the Andiem Hydropower Plant 14

5. ENVIRONMENTAL ISSUES . . . 175.1. vatters mentioned (lunng rehabilitating design period 175.2. Environmental Issues During the Implementing of the Rehabilitation and Upgrading

Process 215.3. Environmental Inpact caused by Resettlement 22

5.4. Environment in General 236. MITIGATION MEASURES FOR NEGATIVE ENVIRONMENTAL IMPACT FROM THE

PROJECT ................................................................................................................. 246.1. Natural Environrment. 246.2. Social Economic Environment. 256.3. Energy supplying plan 25

7. EVALUATION OF ALTERNATIVES ............. .. .................. 268. PCB MANAGEMENT ................................... 269. ENVIRONMENTAL MANAGEMENT PLAN ............... .................. 27

9.1 Mitigation Measures ior Negative Impacts 279.2 Environmental monitoring 289.3 Action Plan and Cost Estimation 28

10. RESETTLEMENT. 3511. PUBLIC CONSULTATION AND DISCLOSURE .3512. CONCLUSION .36ANNEXES . .37

1. INTRODUCTION

1.1. General Introduction on the Background of PowerDevelopment in the Project Area and RelevantEnvironmental Issues

Dai Loc has a total capacity of 5.4MW (the district where Andiem HPP islocated). The grid has 61.3km of 35kV transmission line and 173.95km ofI5kV transmission line. Ai Nghia substation has 6400kVA of capacity, DaiLanh has 1600kVA of capacity. There are 149 substations with 21,000kVA of capacity in the whole district.

1.2. Relevant Organization Structure

The management and operation of the Andiem Hydropowyer Plant isbelonged to a team of 36 people working in the plant: Executive Board andoperating staff consists of 22 people and they work in 3 shifts and 4groups; 8 other people are working in maintenance group and the rest (6people) are doing administration work. The Andiem HPP is directlygoverned by Electricity of Quang Nam, belonged to Power Company 3,Electricity of Vietnam.

1.3. Purpose of the ReportAndiem Hydropower Project is an under-operation plant. It is located inDai Loc District, Quang Nam Province. Based on the study on presentenvironmental conditions, this repor-t shall assess the environmental impactcaused by the plant, propose mitigation measures for negativeenvironmental impacts after ten years of operation as well as whenimplementing the rehabilitation of Andiem hydropower plant to improvethe plant's capacity.

1.4. Methodology

Andiem Hydropower Plant has a small reservoir (non-fully operation),which mainly use the flow from Vang River for power generation, so itcauses little negrative impact to the environmilenit. Therefore, we use thedirect observation method and interview to assess the environmentalimpact of Andiem plant from the first operation up to now (2001) andwhenl we carry out the rehabilitation to improve the power capacity of theplant.

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2. PROJECT DESCRIPTION

2.1. Project Properties

Andiem Hydropower Plant was designed by Power Investigation andDesign Company I (today is Power Engineering Consulting Company 1).Contractor of the Project was Power Company 3. The project wasimplemented in 1986 and came into operation in 1991.

- Reservoir:

Vang river, where Andiem Hydropower Plant is located on, is one oftributaries of Vui Gia river.

- Salient Feature

± Catchment Area = 205km2

+ Length of Nl/ain River = 30km

+ Average Width of the Catchment = 6.38km

± Storage at FSL - 140,000m3

+ Full Supply Level (FSL) = 134m

+ Minimum Operating Level = 130m

+ Regulated Discharge - 7.20m3/s

+ Installed Capacity = 5,400kW

+ Time of Regulating = 05 hours 23 minutes- Penstocks:

+ Diameter y= 1,500mm

± Length L = 160m

+ Thickness 5 = 14mm

+ Material: 11373 under Czech standards CSN 411373 and PN 425310

+ Inclination of the upper part: c = 300, Inclination of the lower part: ae400

+ Maximum Flow Qmax = 7.2 m3Is

+ Maximum Atmosphere Pmax = 1.3 MPa+ Testing Maximum Atmosphere Pthmax = 1 .65 MNPa

- Water Divide Chamber

+ Transition Radius R 3,500

+ lnlet Diameter (= 1,500mm

+ Outlet Diameter (c= 800mm (3 outlet pipes),6 llmm

+ NMaximum Inlet Flow Qmax = 7.2 m'/s

+ Maximum Outlet Flow through each Pmax = 2.4 m3 /spipe

3

+ M/laximum Atmosphere Pmax = 1.3 MPa

+ Testing Maximum Atmosphere Pthmax = 1.65 MPa

- Diversion Canal:

Reinforced concrete diversion canal has a triangular section with a widthof 2.2m, a height of 2.3 m and an inclination of 0.0015. It is designed todivert a flow of 7.2 m 3 /s. The diversion canal works in the type of non-regulation.

- Spillway

To create a reservoir with enough storage for regulation as required, thespillway should be built of rocks with reinforced concrete when there isflood on Vang river flowing through spillway with highest water level of139.8m, Qmax = 1605m3 /s.

+ Crest elevation = 134m+ Crest length = 44m+Max. height = 4.5m

- Generator+ M(anufacturer : SKODA, Czech, 1989.+ Type H 540530/6+ Capacity : S = 2350kVA, P = 1880kW.+ Rated Voltage 6300V+ Rated current : 215A+ Nominal speed : 1000rpm, f = 50Hz± Type of connection Y+ Year of manufacturing: 1987.+ Type of excitation, rectified by thyristor, cooling by fan+ Noni-load excitation 26V - 85A

+ Nominal excitation 85V - 188A- Turbine+ Type of turbine F20-650 horizontal Francis+ Rotation direction : to the right (from the generator axis)+ lMlanufacturer : BLANKO, Czech, 1987.+ Height of head : H,,, = 94.6m

+ Height of net head : Hz, = 93.95mn

+ Height of inin. head: Hj1 ,, = 93.6m+ N4lin. height of sucking: Hsmin = 4.5m

+ Flow through one unit : Qmax = 2.4m3 /s+ Runner diameter : D = 650mm+ Turbine axis: diameter= 650m; length = 1.5im

± Number of blades :18.- Mlain Transformer

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+ Original Country and year of manufacturing: Czech, 1987+ Rated capacity : S = 2500kVA.+ Voltage : 36,750V± Frequency : f= 50Hz± Rated current at high voltage: Ih = 39.3A+ Rated current at low voltage: 11 39.3A+ Short circuit voltage : Uk% = 6.19± Weight : 8580kg+ Oil weight :1860kg

+ Connection (type) : Y/A - II+ Oil cooling system and heat sink- Auxiliary Transformer+ Original Country : Czech+ Year of Mtanufacturing :1987+ Rated Capacity : 400kVA+ Rated high voltage : 6000V+ Rated low voltage : 400V/23 IV+ Rated current at high voltage: Ih 38.5A+ Rated current at low voltage: l = 577A+ Short circuit voltage : Uk% = 5.85+ Weight : 870kg

+ Connection Group : AJY - 12+ Dry Transformer.- Breakers 371, 331,332,333 (35kV Step-up substation)+ Limnited Oil Breaker+ Manufacturer : ZSE of Czech+ Type : GM-V744+ Rated Voltage : 35kV+ Rated current : 1250A1 Breaking current : 20kV+ Controlling voltage :I 10 DC

N Net Voltage at the connector: 35kV.

2.2. Map of Project Location

Mlap of project location is shown in Figure 1. 1 of the annex part.

2.3. Resettlement

The Plant has been operating for 10 years. During construction as well asrehabilitation and upgrade, the project does not affect any households andoccupy any agriculture land areas, so there is no need to make theresettlement plan.

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3. LEGAL BASIS, POLICIES AND ADMINSTRATIVEMANAGEMENT

3.1. Requirement from Investor to environmental issuesAccording to the Investor requirement, an Environmental lmpactAssessment (EIA) and a Resettlement Action Plan (RAP) should beincluded in the Project document.

3.2. Feasibility Study ReportFeasibility Study Report was prepared by Power Engineering ConsultingCompany 1 in July 2001.

3.3. Agreement on Project SiteThis is a rehabilitation and upgrade project, all kinds of work will becarried out inside the existing area of the plant, so it is not necessary tohave this kind of agreement, but a proposal for the rehabilitation andupgrade of the Andiem HPP is needed (in the annex part).

3.4. Environmental Management SystemThe environmental management system in Vietnam is divided into two levels:

- Ministry of Science, Technology and Environment (vISTE) iscommonly responsible for the managing of environmental protection atState level in the whole country, organizing and instructing allenvironmental protection activities and reviewing reports onenvironmental impact assessment of large projects.

- Provincial Department of Science, Technology and Environment isresponsible to the provincial people's committee to carry out themanaging of environmental protection at State level in the localities.This kind of project is managed by provincial level.

- Electricity of Vietnam (EVN) is the project investor responsible forthe whole project including resettlement programs. EVN will supervisethe establishiment of specialized bodies in charge of the preparation andimplementation of the project and will have to approve all decisionstaken by the Powver Company, the Project Management Board (PM\IB).

- Power Company (PC3): Apart from responsibility to manage theproducing and operating of the An Diem Hydropower Plant, PC3 isalso in charge of Project Management Board to coordinate all activitiesof the Project, including resettlement planning and implementation. Inaddition, PC3 is responsible for explaining the scope of the project toPeople's Committees at various levels; providing the budget for the

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rehabilitation and upgrade project; and reporting on the progress ofproject implementation to EVN and World Bank.

- Electricity of Quang Nam is responsible for guiding, monitoring andsupervising the Environmental Impact Assessment (EIA) planning andimplementation of the project; reviewing document on land acquisitionand submritting to the Provincial People's Committee of Quang Nam togrant land within the province area; and monitoring, maintaining andrepairing the plant periodically. Electricity of Quang Nam isresponsible to PC 3.

- An Diem Hydropower Plant is responsible for protecting, takling overand operating the Plant after the completion of the project; supervisingand monitoring to find out timely all the incidents or changes of theplant to inform Electricity of Quang Nam.

3.5. Laws on Environment- Law on Environmental Protection approved on December 2 7th 1993 by

the National Assembly of Socialist Republic of Vietnam and signed forissuance on June 10th 1994 by The State President of Vietnam.

- The Government Degree No.175/CP dated October 18th 1994 onGuideline for implementing the Law on Environmental Protection.

- Law on Land of Socialist Republic of Vietnam approved on July 14th 1993.

- Law on Mlineral Resources of Socialist Republic of Vietnamapproved on March 20th 1996.

- Decision No. 1806 QD-MTg dated December 31st 1995 by TheMinister of Science, Technology and Environrment on organizing andimplementing the environmental impact assessment.

- Decision No.229 QD/TDC dated March 25th 1997 by The Ministerof Science, Technology and Environment on the issuance of theenvironmental standard.

- Circular No.490/1998 TT-BKHCNMT dated April 9th 1998 by TheMinister of Science, Technology and Environment on the Guidelinefor reviewing repolts on environmental impact assessment ofinvested projects.

- Directions of EVN in documenit No. 1940 EVN/KI-l-HTQT datedApril 19th 2001.

- World Bank 's safeguards policies, namely+ Environmental Assessment (OP 4.01, BP 4.01, GP 4.01)+ Pest Mlanageme6t (OP 4.09).+ Safety of dams (OP 4.037)

+ Bank Procedures BP 17.50, Public disclosure of Environmental andSocial operation documents.

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4. DATA

4.1. Relevant Documents and Legal Basis about the StudiedArea.

- Technical Design files

- Environmental Impact Assessment Report in the General Introduction ofVu Gia - Thu Bon river dated June 2000 by Power Engineering ConsultingCompany 1.

- Report on the present environment in 1999 of Quang Nam Province.

- Reports on the orientation to develop socio-economy, developmentprojects, data of present condition about the economy and socio-culture of the studied area.

- Reports on the orientation to develop socio-economy, annualstatistics book of Dai Loc District, Quang Nam Province.

4.2. Operation Efficiency of the Plant

The main function of Andiem Hydropower Plant (HPP) is to generateelectric power for the locality. Now, it has been connected to the nationalgrid. Annual energy productions of the last three years are as follows:22,290,96OkWh; 22,735,92OkWh; and 25,246,48OkWh in 1998; 1999 and2000 respectively.

4.3. Purposes of the Rehabilitation and Upgrade Project ofAndiem HPP

To implement instructions of Electricity of Vietnam in document No. 1940EVN/KH-HTQT, Power Engineering Consulting Company I (PECC I) hasprepared the Feasibility Study Report for the Rehabilitation and UpgradeProject of Andiem HPP.

- Name of the Company in charge/Contractor: Power Company N0.3(PC3) belonged to Electricity of Vietnam.

- Name of the Designing Company for the Project: Power EngineeringConsulting Company I (PECCI) belonged to Electricity of Vietnam.

- Purposes of the Project: To improve electric power capacitysupplying to the whole power system, to treat environmental andpending technical matters so that enable the Plant to reach to designcapacity and further promote the efficiency of the current hydro-energy.

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4.4. Present Situation of the Project Site

The whole headwork system of Andiem Hydropower Plant (includingreservoir, main dam, canal site, penstock, power house, switchyard, controlbuilding, etc.) is located in Dai Lanh Comrune, Dai Loc District, QuangNam Province.

The water resource supplied for Andiem Hydropower Plant is from VangRiver with a catchment area to the dam site of 205 km2.

4.4.1. Present Situation of the Natural Environment

4.4.1.1. Location, Topography and Minerals

- Location.

Andiem Hydropower Plant on Vang River is located in Dai LanhCommune, Dai Loc District, Quang Nam Province. The catchment area tothe dam site of 205 km2 covering most of the natural area of Vang River.

Location Map, see figure 1. 1 in the annex part.

- Topography.

The studied catchment has a leave-shaped with widespread upstream andnarrow middle area. The topography here is mountainous and hilly,inclining from West to East with the catchment elevation of 450m. Streamsin the catchment wind along the mountainous area. The inclination ofstreams is rather big.

- Reservoir area, reservoir banks and diversion canal

The reservoir is small and there is sedimentation occurring here. There isno erosion and sliding on the reservoir banks and concrete diversion canal,but there are leakages along the canal. However, the canal is still normallyworking. A part of spillway right bank is eroded and slid. All the itemshere are working in normal condition.

- Pensiocks, Powerhouse ancd Switchyard

Penstocks are stable and anchor bolts are not eroded. Powerhouse andSwitchyard are in the same situation.

- Minerals.

The studied catchment has mineral sandy gold concentrating in Dal Dong.

Fensfat Rock: The mine area is about 9.56km2 , spreading from Daiillep to Dai Lanh. The quality of rock is good enough for making

china and Colomit glaze bricks.

Suoi Giua coal mine having a volume of 2 million tons is in Andiem.

There is no mineral mine for industrial purpose in the project site.

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4.4.1.2. Meteorology and Hydrology

Vang River catchment is a part of Con River. After studying documentsabout meteorology and hydrology observed in the upper part and theadjacent of the catchment, we have some conmments as follows:

Climate

- Temperatuire: The climate in the project area is a combination of themonsoon-tropical in the south of Vietnam and west of Truong Sonmountains' climate. Vang catchment has a moderate temperaturesystem. The temperatures between winters and summers are notmuch different. Hot months in a year are from June to August, andthe hottest is June with average temperature at 29°C, while thecoldest are December and January. The area have much light withannual average temperature at 25.7°C, highest temperature at 40.6°C,while lowest temperature at 11°C.

- Air hutmiclity: The average annual humidity is 82.3%, this numbervaries from 75% to 85% during the year. The highest is 100% inDecember and January, while the lowest is 18% in July and August.

- Rain: This is the rainy area and the density of rain increases heavierand heavier from the downstream toward upstream. Average annualrainfall in the mountainous area varies from 2,800mm to 3,000mm.In the south of the catchment closed to the site area, it is about2,500mm. Rainy seasons are often from September to January nextyear, rainfall in rainy season is about 70 - 80% of the whole year.

- Tind. Wind direction in the area changes in seasons, usually it is inNorth, North - West and North - East directions. Maximum velocityof wind in the area is 4m1 rns.

- Evaporalion: Since the area humidity is high, the evaporation in thecatchment is not much. There is hot and dry westerly wind comingfrom Laos in dry seasons. In this season, the max monthlyevaporation measured in Picher is about 105 + 130mm (from May toAugust). In rainy seasons, when the humidity increases, theevaporation goes down clearly from 60 . 90rnrn/month. The totalannual evaporation is 1022mmn.

- f :vtrerne clintalefjccICIS:

In the studied area, dry season lasts 7 months with hot andsunny weather causing extremely drought condition.

Much rain and rain with great intensity in rainy seasons causesfloods with frequencies more than 10% harming people's livingand working.

There are about 25.9 days/year in rainstorm weather.

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Hydrolooy and Water Resource

- Hydrology:

*River and stream network.

There are many streams running into Vang River in the studiedcatchment, seven on the left bank with a length of 34.71 km and tenon the right bank with a length of 28.67 km. Length of the main nrveris 29.7 km. The network density in the catchrment is 0.454 km/km2.

. Hydrology.

Flood season begins in October and ends in December, Dry seasonbegins in January and ends in September. Transition stage from dryseason to flood season is in September and from flood season to dryseason is in January. Equivalent to design frequency of 0.5%; 1%;and 5% are 1756 m3/s; 1605 m3/s; and 1247 m3/s respectively.Salient features of the flows at the project site are Qo = 12.3m3/s, Cv- 0.4, and Cs = 1.0.

* Mud and sand.

+ Suspended mud and sand drifting to Andiem reservoir is 26,620m 3/year, displaced mud and sand is 3,445 m 3 /year. Total annual mudand sand to Andiem reservoir is 30,065m3 .

+ As usual calculation, suspended mud and sand drifting to Andiemreservoir is 2,662 m 3 /year and displaced mud and sand is 1,722.5m 3 /year.Total annual mud and sand in Andiem reservoir is 4,384.5 m3 .

- Water resources.

Andiem HPP on Vang River has a catchment area of 205km2 , averageannual flow of 12.3m3/s.

4.4.2. Socio-economic Present Condition of The Studied Area.

4.4.2. 1. Economic Present Condition.The studied area is fully located in Dai Loc District, The natural area of thedistrict is 585.54 kn 2, with 15 communes nuid a town. The district'spopulation is 152,692 people (Dec.2000). Area, population and populationdensity of the district are shownv in Table 1. Reservoir, Canals, Power Houseand Swvitchyard, etc, of Andiem Plant are located in Dai Lanhl Commnune. Thearea of Dai Lanh is 125,9 km2 with its population of 16,973 people (in 3,722households), average population density is 135 people/krm2.

Land area up to the year 2000 is shown in Table l. The whole district'sland area is 58,554.7ha, of which the area of Dai Lanh is 12,590ha.

Cultivating land area of the district in 2000 includes 13,302. Iha of land forfood crops, of which 10,477.6 ha for rice crops, 2,291.5 ha for maize crops,4 10 ha for sweet potatoes and 123 ha for cassava.

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Land area for vegetable cultivating is 1525.1 ha; for short term industrialtrees is 1456.2 ha and for perennial fruit trees is 2128.5 ha.

Food production of the district in the year 2000 was 52,920 tons, of whichrice production was 45,500.9 tons and crops was 7,419.2 tons. Generalfood production from 1996 to 2000 did not change much. The productionin 2000 was the lowest and the one in 1999 was the highest (60,616.9tons). Average food per capita of the whole district in 2000 was 348.74kg/person. The number of Dai Lanh commune was 352.38 kg/person.

Land area for short term industrial trees has been expanded slowly incomparison to the one of previous years. The production value is still low.In 2000, the land area for sugar-cane was 77 ha with the production of2,156 tons; for tobacco was 510 ha with 943 tons; and for ground-nut is800.2 ha with 1,600.4 tons.

In the year 2000, Dai Loc had 3,954 buffaloes, 18,319 bulls and ox, 43,091pigs and a flock of poultry of 316,539; of which Dai Lanh commune had502 buffaloes, 1,536 bulls and ox, 3,940 pigs, and a flock of poultry of27,013. In short, the breeding industry of Dai Loc has not been developedand planned with a large scope.

Aquatic cultivating production. of Dai Loc in 2000 was 16.4 tons in 4.2 ha.By exploiting the natural production, the district had 14.4 tons of fishesand 7.8 tons of other aquatic creatures. Dai Lanh commune, in particular,had an aquatic cultivating area of 0.4 ha with a production of 2 tons, and2.7 tons from natural resources.

In 2000,. households in Dai Loc planted 256.9 timber trees, 7.5 ha ofcinnamon, 210.6 ha of other forestry trees. Number of trees afforested by stateunits was 321.8 ha of timber trees; 22.2 ha of peach trees and 6 ha of otherindustrial trees. There were 1,220,000 trees planted scattering as a whole.

Up to the year 2000, there have been 7 enterprises in mine ore and mineralprocessing sector; 32 enterprises in construction material processing sector;90 enterprises in electric - mnechanic sector; and 500 enterprises in food andagricultural product processing sector. The total value of the industrial andhandicraft production was 74,528 million VND in 2000.

In general, the industrial and handicraft sector of Dai Loc District have notbeen developed with simple and small products, therefore it has littlecompetitiveness.

Living standards of the local resident are still low, with capita averageincoine of 180,000 ÷ 200,000 VND/month.

- Transportation: There are 39 km of national highway, the vast remainroads are managed by Quang Nam province and Dai Loc district;most of the roads are natural earth-fill roads, asphalt roads.

- Access road to Andiem plant is normally used in dry seasons. Inflood seasons, it usually gets stuck in the bridge crossing Kon River.

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Table 1

District/ Population Pop. Land area (ha) Total

commune (people) Den. Of(people/ Agri. Forest. Primitive Specific Land for

kM2) land Land land land housing Natural

land

District 152,692 261 8,826.8 23,687 22,855 2,270.9 914.55 58,544.7

Dai Son 2940 31 80.2 6017 3,271.8 11.77 19.24 9400

Dai Lanh 16973 135 924.86 7124 4,281.2 154.96 105 12590

Dai Hong 10,551 206 505.64 2,450 2,059.6 45.67 60.11 5,121

Dai Dong 11,367 274 550.08 963 2,452.3 102.86 79.8 4,148

Dai Quang 11,326 309 600.24 1,096 1,757.8 112.17 100.77 3,666.94

Dai Phong 7,376 868 339.46 62 361.73 42.11 44.78 850.08

Dai Minh 8,199 1,058 473.51 0.85 177.42 73.61 49.62 775.01

Dai Cuong 8,963 974 544,67 3.48 225.16 89.47 57.22 920

Dai Thang 7,868 918 465.32 6.31 272.75 74.62 37.99 856.99

Dai Thanh 5,065 89 345.66 2493 2439 381.7 22.62 5,681.99

Dai Chanh 5,819 114 700.18 1634 2,144.7 616.18 24.95 5,119.98

Dal Tan 6,074 457 534.31 134 520 104.55 37.14 1,330

Dai Nghia 11,857 358 645.02 938 1,577.7 81.49 67.78 3,310.01

Dai Hiep 7823 303 806.49 765 848.61 131.55 33.36 2,585.01

Dai Hoa 13,744 1,008 742.67 034 392.73 123.92 103.34 1363

Ai Nghla 16,783 2,006 568.57 72.97 124.32 70.83 836.69Town

4.4.2.2. Population, Society and Culture in the Project Area.- There are 2 main groups of people living in the district: the first is

Kinh who are majority and the later is minority Ktu and some otherminority peoples, according to social studies.

- To the end of the year 2000, the district.has a population of 152,692people, of which there are 72,873 men and 79,819 women. Dai Lanhcommune has 16,973 people. Natural population increasing rate is1.25%, average density is 261 people/kin2 .

- District's education: There are 4974 children in 164 classes at pre-school level; 21,007 pupils in 622 classes at primary school level;14,266 pupils in 3 13 classes at lower secondary school level; and6,425 pupils in 131 classes at upper secondary school level. Thenumber of teachers is 183.

- In the whole district of Dai Loc, there are standard health services inall comrmunes; one health care center and two polyclinics at districtlevel. Dai Loc also has 57 doctors; 01 pharrnacist; 01 master; 03bachelors; 167 physicians, technician and nurses; 22 midwives andother staff.

- The district has a well-serviced primary health care. Average man -times go to hospital for health-care examining per annual are 250,000people. Number of inpatients is more than 10,000 people. Widespreadvaccination services reaches to 98%. Diseases like goitre; malaria,and petechial fever are more and more reduced.

- In the past five years, the district's culture and sport departmentimproved actively. Up to now, there are 51% of the households in DaiLoc having television set and 80% of them having radios to listen to.

4.5. Present situation of the Andiem Hydropower Plant

4.5.1. Present situation of equipmentPresent situation of equipment is shown in Table 2

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Table 2

N0) Present Situation

I Equipment

I Hydraulic Turbines: Runners have been eroded; turbine shafts, guide vanes and turbinebearings (for all 3 units) have been abraded. All these items are operating with littleeffectiveness, they need to be repaired or replaced.

2 iMechanical hydraulic governors (for all 3 units) are single loop controlled with lowsensitivity.__ ___ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _

3 Turbine inlet butterfly valves (for all 3 units) have been unevenly eroded, water-stopneeds to be replaced.

4 Penstock inlet valve needs to be repaired.

5 Lubricant oil system has been degraded and pressure oil pump needs to be replaced

6 Compressed air equipment are operatingr in unstable state; the drainage pump systemof the plant has been equipped with new higher capacity pumps but it still can notautomatically operate because the safety auto-float equipment has been broken down.Ventilation and Air Conditioner in the control building has been broken down, too.

7 All units and penstocks need to be repainted

S Two lifters need to be replaced

9 Valve gates and trash racks need to be repaired and repainted.

10 Static excitation (Thyristor), including excitation transformer, AVR and de-excitationequipment (for all 3 units) are now operating with unreliability and bad ability toadjust voltage , so it need to be replaced

11 It is necessary to replace the brushing rim of grenerator __

12 It is necessary to replace the protection, measuring, control, and alarm system

synchronizing system of 3 uniits because the old protection relays have low sensitivity

13) It is necessary to replace the protection, measuring, control, and alarm system

synchronizing, system of 35kV transmission line

1 4 It is necessary to replace AC and DC auxiliary system, excluding auxiliarytransformers

1 5 It is_necessary to repair_the main transformer_No. T3

1 6 It is_necessary_to replace 35kV ZnO arrester sets and all types of cables _ -

II Construction

I It is necessary to dredge sediment in the reservoir

2 It is necessary to repair and aniti-seepage for diversion canal, pressure tank andpowerhouse

3 It is necessary to upgrade the access road from spillway to powerhouse and up topressure tanik.

Note. other parts are working with no effectiveness so they are not mentioned here.

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4.5.2. Contents of the rehabilitation and upgrade projectContents of the rehabilitation and upgrade project are shown in table 3

Table 3

N0 Work item

I Equiipment _ _ _ _ _ _ _ _

I Hydraulic Turbines: Repair runners, turbine shafts; replace guide vanes and turbinebearings (for all 3 units)

2 Replace governors (for all 3 units)

3 Repair turbinec inlet butterfly valves (for all 3 units) __

4 Repair hydraulic control equipment

5 Repair lubricant oil system and replacing pressure oil pump

6 Repair compressed air equipment and safety auto-float equipment

7 Repaint all Units and penstocks

8 Replace two lifters

9 Repair and repaint valve gates and trash racks

10 Replace static excitation (Thyristor), including excitation transformer, AVR andde-excitation equipment (for all 3 units)

11Brushino R-im of Generator

12 Replace the Protection, Measuring, Control, and Alarm System

Synchronizing System of 3 Units __

13 Replace the Protection, Measuring, Control, and Alarm System

Synchronizing System of 35kV transmission line

14 Replace AC and DC Auxiliary System, excluding Auxiliary Transfor-mers

- 5~Repair Main Transformier N'. T3

1 6Replace 35kV Arrester Sets,_Type_ZnO

11 Construction

I Dredge sedimient in the reser-voir

2 Repair and anti-seepage for diversion canal, pressure tank and poWerhOuISe

3 Upgrade the access road from spillway to powerhouse and uip to pressure tank.

16

5. ENVIRONMENTAL ISSUES

Andiem HPP is a small hydropower plant, derivation type with a smallreservoir. The reservoir has a surface area of 37, 307 m2. No households areinundated because of the reservoir. It is necessary to limit the environmentaland social impact to the inundated land area. However, the construction,operation and maintenance of the project have caused certain negative impacts.

5.1. Matters mentioned during rehabilitating design period

5.1.1. Environmental impact to land use

The rehabilitation and upgrade of Andiem Hydropower Project isabsolutely carried out inside the under operating plant area, so it has noaffect to the local land use.

5.1.2. Physically Environmental Impact (hydrosphere, atmosphere).

Andiem hydropower plant is a small project, so it has inconsiderable andlimitable impact to physical environment, such as hydrosphere,atmosphere, etc. During its construction, operation and maintenance,however, the project may cause certain impacts. It can be divided into threeaffected areas to assess: The first one is from the dam to the upper stream;the second one consists of the intake and intake canal to the powerhouse;and the last area is the outlet.

5.1.2.1. Upper Stream Impact (the 1 st area).- Hydrology:

+ In flood seasons: the flow is as usual because a part of the floodflow has been used for electric generation (7.2 m 3

/s). The rest flowspilled over the dam to the downstream. After being used forgenerating, the flow will be discharged back to Vang River.

+ In dry seasons: The flow discharge is inadequate for electric powergenerating, water is stored in the reservoir for making maximumcapacity at peak load, therefore the flow condition in the downstreamof Vang River is changed. However, this part of the rivcr is slhort andlocal resident do not use water for their living, the changes inhydrological regime of the downstream has no considerable affects..

+ Sedimentation in reservoir.

Because of the 4m dam, the inclination of this part of Vang river hasreduced. The flow speed decreases enabling sediment to accumulatein the upstream of the dam.

It is reported that in the past years, the uncontrolled exploiting of gold onVang river has caused the deposit sediment in the reservoir and in the

17

downstream of the power house. Design regulating time is 5 hours anid23 rminutes. Because of the sedimentation, now it is decreased to about 4hours. In addition, the gold finders usually used Siamua substance fortheir work. That was the cause of water pollution and death of fishes,especially new born fishes. According to the survey in the early June2000 by Power Engineering Consulting Company N°. 1, with crestelevation of 134m, the surface area is 37,307m2 and the reservoir storageis I IO,000m 3 .The sedimentation in the reservoir has raised to 46,000n 3,the height of the sedimentation at dam cross sections is from 1.5 . 2.0 m.

Apart from the changes of sedimentation in the upstream of dam andflow regime in dry season, there are trees, rubbishes obstructingwater to flow into the intake also creates losses for the powerhouse inflood seasons. Measures should be applied to enable the plant tooperate well and continuously in flood seasons.

5.1.2.2. Impacts in the Area from Intake to Powerhouse (the 2 nd area).The hydrological regime in this area has been affected by theoperation of the plant in flood seasons. However, this stretch of riveris short and the short interval does not affect much to localpopulation and economy as analyzed above.

Hydraulic regime in the canal and water conveying capacity of thecanal are in good condition. With an inclination of 1.5 0/ triangularshape and average width of 2.2m, the canal can convey a water flowof 7.92m3/s. The canal is built of reinforced concrete, so there is noerosion and sedimentation inside it. In 1999, there were some parts ofthe canal destroyed and now they have been repaired. But there isstill leaking at some connection.

Environment inside the plant.

+ The plant has been operating for 10 years. Control equipment,governors, turbines, and generators have been degraded and seriouslydamaged. During operation, this equipment has been maintained andrepaired asynchronously causing big noises in the powerhouse.

+ Since the Plant is located 1uncderground and sheltered from the wind, itstemperature is about 22'C in winter and from 330C to 40'C in sulimmler.It is necessary to have measures to solve the noise and reducetemperature ins.ide the powerhouse, especially in the central building.

+ During the rehabilitation and upgrade stage, there will be waste andrefuse discharged from the Plant (oil, grease, for example). Thoughthe volume of the waste is not much, it is still necessary to havemeasures to treat and to collect waste and refuse; construct a wastecollecting tank then waste will be regenerated, burned or buried inproper places, for example. It is required to minimize the dischargingof such waste and refuse into the downstream.

18

5.1.2.3. Impacts in the Outlet Canal Area (the 3 rd area).

+ The hydrological regime in the downstream of outlet canal has beenchanged; the flow has been widened toward the left bank. During itsoperation, the flow in flood seasons scrolled rocks and soils from theupstrearm down, causing sedimentation in the powerhouse area. In 1997,20,000m3 of rocks and soils were dredged from the downstream canal. Itwas sedimentation again when' there was a low frequency flood(approximately design flood) in 1999.

+ Fish and fishery: The downstream of An Diem HPP is a short sectionof the Vang river joining to Con nrver with an annual flow at the estuary of12m3/s. From here the flow goes along I lkm downstream to join with Cairiver. The annual flow of Cai river at the confluence is 214m3/s. Theconstruction and operation of the plant will not affect the flow. On the otherhand, aquatic resource in this section is not abundant. Therefore,implementing the rehabilitation and upgrade project will not affect fish andfishery in the locality, either.

+ Water use: The construction and operation of the plant. In addition,there is no work using this water resource for irrigating. Hence, there is nonegative impacts on the water use, either.

5.1.2.4. Quality of River Water.

According to the report on current environmental assessment of QuangNam water river, the quality of water at the T-junction of Vu Gia - ThuBon shows the PH value of within 7.2 to 6.57 (inside the acceptable limit),suspended solid substance varies from 18.7 to 21.1 mg/I, this numberseems to be higher than it is allowed, but not remarkable. Organicsubstances have COD and BOD5 content from 3 to 5 mg/l are inside theallowable limit. Heavy metals, inspected criteria such as lead, zinc, andmercury do not appear or appear with low content. Microorganism,represented by coliform with much higher content in compared with theacceptable limit. It is only in accordance with the acceptable limit wVhen itis not rainy. In general, the quality of river water is good in term oforganism; it is only partially polluted during rainy days. Other chemicaldata is insicle acceptable limit.

5.1.3. Biology Natural Resources and Eco-systems.

- Aqcuatic biology:

Since the plant is operating in an uncompleted daily regulation (small reservoirwith a volume of 110000 m3), current situation of aquatic biology has not beenchanged much. Only the dam affects fish rmigrating. There have not been anydocuments about the aquatic resources in Vang river. During investigating, it isreported that aquatic resources are not abundant. Local inhabitants only go

19

fishing for food when they have free time. Fishing equipment here arefishhook, fishing-net, anid weir, etc. Fish production is low. In rainy seasons, theproduction is higher than it is in dry seasons. Namne of fishes here are freshwater fish, such as carp, small fish fiy, etc.

The local inhabitant has started to breed fish. There are some pondsbreeding fishes like carp, chub, African carp, etc.

- Eco-system.

As analyzed above, In the site area, the on land living things are poor in speciesand quantity, on the other hand, the plant has small scope with little inundatedareas, so that it has little impact to the on land species in the site area.

5.1.4. Impact to the Under-used Natural Resources.

- Water resource.

Andiem hydropower plant is using natural water resources from Vangriver. After diverted through powerhouse, the whole flow water runscompletely out to the downstream. The operation of Andiem HPP is inaccordance with the water demand of the irrigational system in Dai Lanh inparticular and in Dai Loc in general. It means the downstream area shouldbe always in the samre discharge condition in dry seasons as before.

In fact, field study in Vang stream showed that there is no inundation orsedimentation of agricultural lands.

- Lannd using.

Other on-going used facilities such as transportation, agriculture, andindustry, etc, have not been affected by the project. However, a certain areaof land (about 6 ha) has been used for headwork, control building, safeguarding area, and local access roads. All of the land area is hilly land withbushes of trees along two banks of Vang river. The project site area, whichis now controlled by PC3, has no inhabitant. Therefore, the requisition oflands here does not have negative impact to the local land-use planning.

Flow interruption: An Diem HPP is an under operating Plant. In case therehabilitation and Upgrade project is implemented, only the intakes shouldbe closed, so that the flow will spill over spillway down along the originalriver, and the flow will not be interrupted. There is no water transportationin the downstream.

- Mineral resources

The rehabilitation and upgrading of the HPP will not involveinundation not earthworks outside the existing plant area so that noimpacts on will be imposed mineral resources in the surroudingareas.

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5.1.5. Impact to People's Living Standard.

Andiem HPP does not inundate any residential houses and their cultivatinglands, and have no negative impact to human living, either. The plantoperation with annual energy production of 22 to 25 million kWh since1991 has created favorable condition for the district economicdevelopment. The stable and huge energy resource has significantimportance for the local electric power system in dry season. It not onlyimprove the quality of electric power, but also supply electric power toremote communes, which helps improve economic development and bringus positive social effects. The power supplied from Andiem HPP has beenconnected to the 35kV transmission line local network. Electric power hascontributed to improve local people's awareness through programsbroadcasting on radio and television. Therefore, people in remote arearecognize well about their responsibility for society.

5.2. Environmental Issues During the Implementing of theRehabilitation and Upgrading Process

5.2.1. Flow Obstruction

When implementing the rehabilitation and upgrade with equipment part andcivil work, the intake shall be closed so water will flow to the main streamdown to the downstream. Therefore it will have no impact to the flow.

5.2.2. Changes of Downstream Water Quality

During the rehabilitation, the reservoir will be dredged with a volume of30,000m3, leaking parfs of the canal will be repaired within one month. Itmay have impact to the downstream environment but unremarkablebecause the implernenting is short and the river part from downstream ofthe dam site to VLi Gia - Thu Bon river is not too long, therefore waterfrom the project will run into Vu Gia. In addition, water in this area is onlyused for irrigating purpose, so the temporary turbidity of water will notaffect the local environment.

5.2.3. Construction Material and Solid Waste Discharging

During the rehabilitation, upgrade and expansion stage, there will be wasteand refuse discharged from the Plant (oil, grease, for example). Though thevolume of the wvaste is not much, it is still necessary to have measures totreat and to collect waste and refuse; construct a waste collecting tank thenwaste will be regenerated, burned or buried in proper places, for instance.It is required to minimize the discharging of such waste and refuse into thedownstream. Besides, it will take a short time to repair and replace parts ofequipment and the plant, so that there will be inconsiderable impact to theenvironment in the locality and in the downstream.

21

Dredging waste materials are sands and could have been contaminateddue to the goal and fensfat rock mining in the upstream. Disposal optionsinclude general land-fill materials for new construction filling or linermaterials for an appropriate site, or as capping materials for a landfill. Theplace for disposal of the dredging materials will be discussed and agreedupon with the Dai Lanh commune or Dai Loc district authorities. Ifdredging materials will be used for land-fill matenials, analysis of potentialcontamination of the sediment should be carried out to ensure that the levelof contamination is within national environmental standards.

5.2.4. Noise

Since the volume of work is not much, mainly in the machinery hall (repairand replace equipment). Noise only exists inside the control building and itdoes not have large impact. In addition the site is far 5 km from residentialarea, so noise impact is inconsiderable.

5.2.5. Demolishing of Trees and Vegetation Covers

As mentioned above, the rehabilitation is mainly replacing equipmentwhile there is little work with civil part, so this activity is not included.

5.2.6. Impact from Worker's Camping

Number of workers for the rehabilitation is about 60 - 80 people (not toomany). On the other hand, number of workers of the under operating plantis small at that time so it is not necessary to make temporary camps forworkers, because all workers can stay in the apartment area of the plantand they can share the same Water Closet area with other workers workingin the plant.

5.2.7. Labour Safety

To have good labour safety, all construction counterparts should have goodlabour safety measures as well as safety working clothing and tools forworkers, and they should have regularly checking with each worker onlabour safety.

5.2.8. PCBs disposal and management

The existing equipment is manufactured in Czech republic in 1987-1989.The transformers do not contain PCBs and therefore no specificmanagement or disposal plan for PCBs will be required.

5.3. Environmental Impact caused by Resettlement

As mentioned above, there is no resettlement program for the rehabilitationand upgrade project.

22

5.4. Environment in GeneralAndiem hydropower plant only occupies a small area of hill and forestland, using the natural water resource form Vang stream. The operation ofthis plant does not affect the flow regime of Vang river and Con river. ThePlant has little environmental negative impact.

The benefit of the project is electric energy. It supplies the local electricsystem with 25 million kWh/annum (equivalent to 13,000 tons of oil). It isnecessary to maintain and upgrade the project to have maximum use of theavailable energy.

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6. MITIGATION MEASURES FOR NEGATIVEENVIRONMENTAL IMPACT FROM THE PROJECT

6.1. Natural Environment.

6.1.1. Mitigation Measures for Physical Environment.

Following measures should be taken to mitigate negative environmentalimpact as follows:

- Reduce the quantity of sand and mud in the river bed by prohibitexploiting of gold in the upstream. In addition, while implementingthe rehabilitation and upgrade project, it is necessary to maximizinTlylimit disposing construction waste into river, etc. together withprotect the upstream forest.

- Reduce the quantity of sand and mud in the reservoir by dredgingannually to maintain the capacity of regulation as designed.

- Dredging sand and mud from reservoir is carried out by usingdredgers and transported by van to the waste area, the dredging-pumpwith capacity is horse-power 300 and productivity 100 m3/h. It'swork only a month in the dry season.

- Quantity of work is specified (are shown in "Feasibility StudyReport"). The quantities of material to be transported is not much.Negative impacts from san and mud at the downstream areinconsiderable.

- It is essentially to upgrade the trash rack as well as the rackingmachine.

- Noise: It is necessary to replace controlling equipment, auxiliarygovernor, and upgrade turbines, generators, etc, to reduce noises.

- Temperature: It is necessary to install air-conditioner in the controlbuilding for staff to keep temperatures low enough in summers andwann enough In winters.

- Sedimentation in the downstream of the tailrace canal: Since it isimpossible to prevent soil and stones from the upstream runningdownstream w*hen there is big flood, it is necessary to dredge sanid, mud,andl sedimiientation fi-omn the downistream of the plant in accordance withthe desipn prepared by PECC I dated December 1999.

- It is necessary to reduce disposing of construction materials andwaste into Vang River to avoid water pollution during operation aswell as when the rehabilitation and upgrade work is implemented.

- Investment cost of mitigation measures for physical environment isincluded in investment cost of upgrading and rehabilitating the project.

24

- It is necessary to construct a suitable waste tank to collect waste andrefuse or grease. Thenr, such waste should be regenerated, burnt orburied in proper places. It is required to minimize the discharging ofsuch waste and refuse into the downstream.

6.1.2. Environmental Impact Mitigation to Eco-system.

6.1.2. 1. Aquatic Creatures, Fish and Flora.- It is necessary to reduce water pollution to a maximum level by

shortening the time of excavating and constructing under water (ifhaving) to protect aquatic creatures, fish and flora, especially whenthe rehabilitation and upgrading is implemented.

- Protect natural national park in the catchment and in the adjacent, toafforest and to reduce deforest.

- Protect the floristic cover area and recover the desert lands withvegetation. Priority is given to the forest resource of Dai Loc toreduce erosion and to settle the slope sides.

6.1.2.2. Fauna.

- Responsible offices should point out measures to protect value andrare animals from hunting and other illegal activities.

- It is necessary to control people to entering remote areas byimplementing pernanent or temporary measures (for example,control access road, security guarding, etc.).

6.2. Social Economic Environment.

When the project is implemented, no households or cultivating lands shallbe inundated of affected. Therefore, it is not necessary to prepare report onresettlement for the project.

6.3. Energy supplying plan

During the rehabilitation and upgrade, Andiem Hydropower Plant willhave to cut electricity fully or partly. There will be a shortage ofelectricity. It is necessary to have a detailed energy supplying plan togenerate electric power to the locality.

25

7. EVALUATION OF ALTERNATIVESThe purpose of the project is to rehabilitate and upgrade a stable electricitygenerating to connect to the national grid so that it can supply electric powerfor the locality.

Replacing alternatives can be as follows:

Replace with a local diesel generator.

Supplement with electric power generated from the national grid.

Construct some new small hydropower stations in the area.

Not to implement the rehabilitation and upgrade project.

Alternative to replace with a standing local diesel generator: This alternativecan be implemented quickly but it has some disadvantages: difficulty insupplying fuel, high costs, especially in flood seasons. In addition, the use ofdiesel generator will pollute the surrounding environrment.

Alternative to supplement with electric power generated from the national gridcan be implemented since we already have the electric power grid.

This altemative would not have major environmental impacts.-Some veryminor impacts could be as tree cutting and construction of tower pads leadingto an increased soil erosion. However, there is still no supplemented powersupply since the electricity generated to the national grid is limited to theincreasing load demand.

To construct some new small hydropower stations in the area will take longtime and may occupy land or resettle residents in the project area, etc. withhigh costs.

Alternative not to implement the rehabilitation and upgrade project: the plantmay still operate but with lower capacity in comparison ,with the design.Annually, it is necessary to carry out repairing the plant in large scope as wealready evaluated above.

Hence, It is feasible to carry out the rehabilitation and upgrade project in thisperiod. In addition, Implementing the project according to this alternative willnot affect the local environment.

8. PCB MANAGEMENT:

The existing equipment is manufactured in Czech republic in 1987-1989. Thetransformers do not contain PCBs and therefore no specific management ordisposal plan for PCBs will be required.

26

9. ENVIRONMENTAL MANAGEMENT PLAN

9.1 Mitigation Measures for Negative ImpactsConstruction work in the rehabilitation and upgrade includes soil and rockexcavation, concrete casting, rock built, brick paving, plastering, roofing,-installing and dissembling of equipment; and renewing road surfaces, etc,...

- Soil and rock excavation, plastering, rock built, brick paving, roofing willbe carried out by executing.

- Concrete casting is carried out by machine in combination with manualways.

- Installing and dissembling of electrical and hydro-mechanicalequipment is carried out by manual ways in combination with usingwinch and crane in the plant.

- Dredging sand from reservoir is carried out by using dredgers andtransported by van to the waste area. Quantity of work is specified (areshown in "Feasibility Study Report").

The construction site and local material exploitation area (for sand, stone andgravel) is in Dai Lanh commntme, Dai Loc district.

Concrete, steel, timber, etc, are supplied from Dai Loc town, 62km far fromthe site.According to "Feasibility Study Report ", we can see that quantity of materialto be transported is not much: about 142 tons of cement, 0.4 tons of steel(various types), and some of tons of other materials. Transporting distance is37km or 62 km depened of materials, so it is possible to transport the above-mentioned materials in weekends or in the time transportation density is little.Therefore, it will reduce traffic jam. Negative impacts from the transportationof material from Kon Tum to the construction site are inconsiderable.

Quantity of exploiting material (sand, stone, gravel) is not much: 855m3 ofstones and gravel; other 394 1m3 will be exploited in the site area, so there areno impacts to local environment and eco-system. The transportation ofmaterial is carried out in a small area where there are not many residents livingin, so it does not affects people's health.

Installation work in the project is: dissembling of needed replacing equipmentand installinig newv equipment.

Material and equipment are easy to dissemble so arranging and collecting suchmaterial and equipment is easy, too.

Collecting oil and grease when dissembling equipment, such as governor andtLrbine, so that it can limit the environmental pollution.

Electricity of Quang Nam is responsible to arrange work and support infinance for labour force of the plant while implementing the project. Labourforce of the plant is supposed to arrange as follows:

- Participating in the Project management board.- Participating in some other work of the project.

27

- ''Having suitable work in offices of the electricity of Quang Nam.- Stop working and having allowance (as agreed)Making a list of the affected households, planning suitable electricitysupplying plan to maintain quantity and quality of electricity supplying so asnot to affect households who are using electricity supplied by An Diem HPP.

Taking seriously the labour safety supervision, especially to workers who arecarrying out complicated work so as to reduce working accidents.

Special measures to ensure the dam stability will be applied, based on theavailable technical design data and additional checking of the technicalfeatures

9.2 Environmental monitoringThe Environmental monitoring and management should be carried outregularly. The project has a small reservoir and modest site area, affects to theenvironrment is not much, so it is not necessary to have specialized officials tosupervise and manage this kind of work. The environmental monitoring andmanagement of the mitigation measures can be carried out regularly by theexisting staff of the Plant to improve their experience and to have treatmenlttimely (Such staff should be trained in specialization).

Contents of the monitoring and supervising work during the rehabilitation andoperation are specified in Table 4 and 5

- Dam safety will be monitored

9.3 Action Plan and Cost Estimation

9.3.1 Rehabilitation and Upgrade Plan

Time for implementing the project is 01 year. Total Cost for the project detailsare shown in "Feasibility Study Report".

9.3.2 Environmental Management Plan

As stated above, an engineer who is responsible for operating will beemployed to supervise the environment management plan duringimplementing the project as well as in long term. Details are shown in Table 4and 5Total cost for the whole environmllenital mnanagetneit plan is N'IVND 163.9;details as follows:

1. Cost for training management and operation staff: VND 10,000,0002,000,000VND/person x 5 persons

2. Cost for supervision, checking and implementation for VND 39,000,000environment protection measures during constructionphase'

'Environment cost during construction consist of:- Salary of 2 officers in 12 months will be used to pay fbr supervisors who do extra work (apart from working in

their specialized aspects):

1,000,000 x 2 x 12 = VND 24,000,000 (MVND 24).

28

3. Annual Cost for supervision, checking andimplementation for environment protection measures 2 VND 100,000,0004,000,000 VND/year x 25 yearsSubtotal VND 149,000,000

4. Contingency: 10%(1+2+3) VND 14,900,000Total . VND 163,900,000Total (by USD, Ex. Rate USD 1 = 15,000 VND) USD 10,927

The Environment Impact Assessment Report on the Rehabilitation andUpgrade Project of An Diem Hydropower Project in Quang Nam Provinceshall be reviewed by the Department of Science, Technology and Environmentof Quang Nam Province. The Review report concluded that the project doesnot have any negative impacts on the natural environment and local socioeconomy, and the project is supported to be implemented.

- Cost for takiig iand having water samples analyzed: VND 5,000,000 (MVND 5)Costs such as costs for travel, stationary, equiprrcint: VND 10,000,000 (MVND 10).

2 Environment costs during operation:- Annual monitoring of environment lnd water measuring and analyuing over 25 years is: VND 50,000,000

(MVND 50).

- Cost Ibr ollicers of the plant to vvork as enviromnent supervisors to monitor environmental issues over 25

years is: VND 50,000,000 (MIVND 50)

29

A~ MITIGATING PLAN _ _________Table 4

Phase Issue Mitigating Measure Cost Institutional R~.sponsibility__________________ ____________________________________________________ Installation Operating Installation Operating

Included in Contractor forFlow obstruction Suitable construction plan, included in tender document of the cost for None construcfion and D .a.

construction and installation parts cntuoninstallaton part

Construction material, Suitable construction plan, fight construction supervision; suitable thlued cos fore Construction and Electricity ofwaste tanks for waste collecting.tecsfo construction intlaind Quang Nam

construcNonenElectricityoo

Noise No influence, far from residential areas None Noen.a. Eluangit Nam0 .-- - - -- - - - -.- ....-- - - - - - * * - * * -- - - - -- ~ - - - _ _ _ _

-4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Contractor for*~~Tree cutting, affected Eetiiyo

C~~~~) l~~~~ight monitoring; Supplying sufficient wood/timber for construction. None None construction and Eecrit'ovegetable cover intlain Quang Nam

U) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Contractor for Electricity ofr- Camps Suitably arranged with WC area as regulated. None None construction and0~~ - __---. -- - _ _ -rsaain Quang Nam

Labour Safety ~Instruction about labour safety, supplying sufficient labour safety tools NnNoe Construction and Electricity ofLabourSafetyand equipment ioeNoe cnstaluation ad Quang Nam

Resettlement No influence because there is no residential inundated area None None n.a. Eluancit NamContractorngfor

Deforestation There are only hills with grass and bushes in the project area. Tight NnNoe Construction and Electricity ofDeforestabonmanagement of tree cutting ioeNoe cnstallaton ad Quang Nam

30

Dam safety Safety measure to ensure the stability of the dam included in Electricity ofthe cost for None None Quang Namconstructlon

Flow obstruction Inconsiderable because the weir is low with a height of 4m. None None n. a. Electricity of

Waste (oil, grease) Check, collect and treat timely n1.a) Electricity offrom Constructlon None None Quang Namm a te ria l........ ...... ... ........... ...................... .... ...Noise No influence, far from residental area None None nQuangctict Nom

Tree cutting, affected None na.Electricity of0 vegetable cover None None Quang_Nam

NnNoeNone Electricity ofZ4 CapsNoe_on Quan Namn

0 Labour Safety lnstructlon about labour safety, supply sufficient labour safety tools NoneNoneElectricity ofLabour Safety ~and equipment NnNoeQuany Nam

Resettlement No influence because there is no resettlement plan None None Qa.Elctict Nom

Tight management of tree demolishing and uncontrolled deforestaton None Included in n. a. Electricity o fin the upstream area costs for the Kon Tum &

Deforestafion Provincial People'sForestry Committee at

various levels

31

B. MONITORING PLANTable 5

When is the Cost Institutional Responsibility

What Where IS t e parameter to Why is theparameter Where is the How is the parameter to be monitored! be monitored - parameter

Phase Iltobe parameter to reaueny m itobe Installmonitord be moioe?type of monitoring equipment ? freuenytfatlb

of (operated)? 0 0

.________ _______________________________________ continuous? .____________ ___con_nuus

Water Downstream Taking sample, analyze 12 chemical Completon of To see if None VND n.a. Electricity ofquality of factors the Project water 5,000,000 Quang Nam

Powerhouse quality & DOSTEaffects the

Waste, Oil Machinery Check to see if there is any leakage of During To see if None None Contractor for Electricity

and grease Hall, oil and grease. If yes, does the oil and Construction there is Constructon of Quang

z Transformer grease flow to the collectng tank or not? environment and Narn &

ti Housing Is other kind of waste collected to a al polluton Installaton DOS'TEa: proper place or not? due to

- - -- -. __ ~~~~~~~~~~~~ ~~~~waste. _ _U ) ._ . __.. ._-.----------------._........... .. ........ __ .....eo Noise Power House By listening. Normal Regularly If it is more None None Contractorfor Electi-icity

than usual Constructon Of Quanglevel, hire and Nani &equipment Installaton DOSTE

.. ...... _._ .. .._. .. to measure.

Dust Project Site By observing During If there is None None Contractor for ElectricityConstrucUon too much Construction of Quang

dust, eject and Nan &L I .water Installaton DOSTE

32

0!i Dam stability During Toprvsensureriit o

w Dam Checking of technical features the safety of None None Supervision Electc z ~~~~~~~~~~~~~~~~construction constructor un a

Parameter of During To see and VND Electricity ofEnvironment Project site Environmental Supervising cnDucin see None 20 0 n.a. Quang Nam

Parameter of General survices for analyze water and During To see and VND VNDEnvironment Project site other factors constructon inspect 5,000,000 5,000,000 na .

Water quality Downstream Taking sample, analyze 12 chemical December, To see if None VND n.a. Electricityof factors in 25 years annually water 50,000,000 of QuaangPowerhouse quality N am&

affects the DOSTEdownstream ____ _.. _~~~~~~~~~~~~~~.. ._._ ..... ... .. . ... ... ..... .. .. .-.... .. ....... ... . ......... ............. .. ..... ...._ .._ _ ... .................. ............. . ... ..... .... . __ ........ .. ...... ...... _... .__.... ..

Waste, Oil Machinery Check to see if there is any leakage of Every 6 To see if None None n.a. Electi-icityand grease Hall, oil and grease. If yes, does the oil and month, during there is of Quang

Transformer grease flow to the collecting tank or not? operation environment NaDS&O Housing Is other kind of waste collected to a al pollubonco proper place or not? due to0 ........ ....... _ _. .... . ......... _ _ .. .__ _ ... _waste. _

Noise Power House By listening. Normal Regularly If it is more None None n.a. Electr-icitythan usual Qam&level, hire NDam&equipment DOSTE

.___ ____ _____ to m easure. -_.Dust Project Site None None None None None n.a. Electiricity

of QuanigNamn &

3 3__ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ D O S T E

Water flow Downstream Water level and water flow Dry and rainy Change in None None n.a. Electricityseasons the Of Quang

hydrological Nam &DARDO regime andD

the impactsO on

downstreamfishery andagriculture

Project Site Cost for officers of the plant to work as Every 6 Inspect and VND n.a. ElectriciLy IEnvironmental environment supervisors to monitor months to test ifs None 50,000,000 of Quanigsupervising environmental issues in 25 years necessary Nam &

34

10. RESETTLEMENT

An Diem HPP has been operating since 1991. The Resettlement Plan hadbeen completed before the plant came into operation. Resettled householdsare having stable life with local community. The rehabilitation and upgradeproject will be carried out completely inside the existing plant. Other areassuch as material area, workers' camping for the construction work, andwaste area, etc, are all inside the existing plant, too. There are no more landarea or residential area to be occupied for the project, so it does not affectlocal residents. Therefore, there is no resettlement plan in this project.

11. PUBLIC CONSULTATION AND DISCLOSURE

During implementation the rehabilitation and upgrade project, all theworkers working in the plant have to stop or change their work, and theirlife maybe more or less affected. When the project is completed, theirliving and working condition will be improved. Such workers have beeninformed about the project by Electricity of Quang Nam (theirmanagement board).The implementation of the project was informed to and asked for opinionfrom engineers and workers in Dai Loc Department and local authorities(people's committees of Dai Lanh commune and Dai Loc district) in June2001. Records of these meetings are proviced in annex. Information aboutthe project and the summary of the environrmental assessment was sent toCultural Center of Dai Lanh commune to be broadcasted for the publicinformation and comments. Local NGOs such as the Women Union, theFarrner Union and the Fatherland Front were invited to provide comrments.This public consultation process took place in end of February 2002.Records of the public consultation meetings proviced in annex 5.

Copies of the EA summary and the Environmental Management Plan(EMIP) have been displayed at a public place such as DOSTE and the DaiLanh commune people's committee from February 8, 2002 for four monthsfor public comments.

So far the project has been agreed in principle and highly supported by theabove-mentioned people and offices.

In general, no major environmental issues have been raised and themitigation and mnonitoring plans for the project have been agreed inprinciple and l;ighly supported by the above-mentioned people and offices

Electricity of Quang Narn has got an agreement on the arrangement ofsuitable work for workers of An Diem 1tPP during the implementation ofthe project so as not to have negative impacts to living condition of theworkers as well as their families.

35

12. CONCLUSIONCarrying out the rehabilitation and upgrade of the An Diem HPP in this periodis necessary. Dai Lanh commune is far from the large national electricity grid.Supplying electricity for this area is only come from Ai Nghia 35 kVtransmission line, so the probability of stop supplying electricity is high. Tomaintain the local electricity source is very essential and has a specialsignificant for the development of the economic and social of the Quang Namin particular.

Negative impacts from the project are inconsiderable. Other small ones can besolved easily with little costs. There is no resettlement area in the project isalso an advantage for the implementing of the project. It is suggested to carryout the project as soon as possible.

36

ANNEXES

1. Document No.785 DL31DQNa-4 dated May 3rd 2000 by Electricity of Quang Namon the preparation of Feasibility Study Report on An Diem and Kon DaoHydropower Plants with loan from the World Bank 2002 - 2003 sent to PowerCompany 3.

2. Minutes of Meeting a bout the meeting between representatives from PowerEngineering Consulting Company 1, Power Company 3 and An Diem HPP in AnDiem HPP dated May 15h 2001 on Site Investigation for the rehabilitation andupgrade project of An Diem HPP.

3. Document No.1750 EVN/DL3-8 dated May 23rd 2001 by Power Company 3 on thepreparation of Feasibility Study Report on An Diem and Kon Dao HydropowerPlants with loan from the World Bank 2002 - 2003 sent to Power EngineeringConsulting Company.

4. Letter No1946 EVNIDL3 dated June 5th 2001 by Power Company 3 on theagreement on investigation outline for the rehabilitation and upgrade of Kon Daoand An Diem HPP sent to Electricity of Vietnam, an appendix is enclosed).

5. Minutes of public construction meetings with PAPs, local NGOs.

37

Annex I

Electricity of Viet Nam SOCIALIST REPUBLIC OF VIETNAMElectricity of Quang Nam Independence - Freedom - Happiness

No:.78X DL3/DQNa-4TAM KY MAY 3TH, I2001

Suhjuct: prepacrationi of Feasibility Sttudy Report on Atn Diem HPP withl loanifrom tde Wor ld Banik 2002 - 2003

To: Power Company No3 (PC3)

To official document No 1405 EVN/E)L3-8 dated April 25th, 2001 on the preparationof Feasibility Study Report on An Diem and Kon Dao Hydropower Plants with loanborrowed from the World Bank, 2002 - 2003.Electricity of Quang Nam would like to report to PC3 following contents:

8. Year of construction :1986

9. Year of commissioning: 1991

10. Generator

+ Manufacturer : SKODA, Czech, 1989.+ Type : H 540530/6+ Capacity : S = 2350kVA, P = 1880kW.+ Rated Voltage :6300V± Rated current : 215A+ Nominal speed 1000rpm, f= 50Hz+ Type of connection : Y+ Year of manufacturing: 1987.+ Type of excitation, rectified by thyristor, cooling by fan+ Non-load excitation : 26V - 85A+ Nominal excitation : 85V - ISSA

11. Turbine

+ Type of turbine: F20-650 horizontal Francis+ Rotation direction : to the right (from the generator axis)+ Mlanufacturer : BLANKO, Czech, 1987.+ Height of head : Hma,c 94.6m+ Height of net head : H,t = 93.95m+ Height of min. head : Hnin = 93.6m

Min. height of sucking: Hsmin = 4.5m+ Flow through one unit : Qmax = 2.4m3/s

38

+- Runner diameter D = 650mm+ Turbine axis: diameter = 650m; length = 1i5m+ Number of blades : 18.

12. Main Transformer

+ Original Country and year of manufacturing: Czech, 1987+ Rated capacity S = 2500kVA.

+ Voltage 36,750V+ Frequency : f= 50Hz+ Rated current at high voltage: Ih = 39.3A+ Rated current at low voltage : 11 = 39.3A

+ Short circuit voltage : Uk% = 6.19+ Weight : 8580kg+ Oil weight :1860kg

± Connection (type) Y/A - 11+ Oil cooling system and heat sink

13. Auxiliary Transformer

+ Original Country : Czech+ Year of Manufacturing 1987+ Rated Capacity : 400kVA+ Rated high voltage : 6000V± Rated low voltage : 400V/23 IV+ Rated current at high voltage: Ih = 38.5A+ Rated current at low voltage :1I = 577A+ Short circuit voltage : Uk% = 5.85+ Weight : 870kg

+ Connection Group : A/Y - 12+ Dry Transformer.

14. Breakers 371, 331,332,333 (35kV Step-up substation)

+ Limited Oil Breaker+ Manufacturer : ZSE of Czech+ Type : GM-V744+ Rated Voltage : 35kV+ Rated current : 1250A+ Breaking current : 2OkVA+ Controlling voltage :110 DC

15. Net Voltage at the connector: 35kV

+ Original Country and year of manufacturing: Czech, 1987+ Rated capacity : S = 2500kVA.

+ Voltage : 36,750V+ Frequency : f= 50Hz+ Rated current at high voltage: Ih= 39.3 A

39

+ Rated current at low voltage :11 = 39.3A

+ Short circuit voltage Uk% = 6.19

+ Weight :8580kg

+Oil weight :1860kg

+ Connection (type) : Y/A - II+ Oil cooling system and heat sink

16. Project Properties

- Reservoir:

Vang river, where Andiem Hydropower Plant is located on, is one oftributaries of Vu Gia river.

- Salient Feature:

+ Catchment Area 205km2

+ Length of Ivlain River 30km

+ Average Width of the Catchment 6.38km

4 Storage at FSL = 140,000m3

+ Full Supply Level (FSL) 134m

+ Minimum Operating Level . 130m

+ Regulated Discharge 7.20m3/s

+ Installed Capacity = 5,400kW

+ Time of Regulating = 05 hours 23 minutes

- Penstocks:

+ Diameter (p = 1,500mm

+ Length L = 160m

+ Thickness 6= 14mm

+ Material: 11373 under Czech standards CSN 411373 and PN 425310

+ Inclination of the upper part: cx = 30°, Inclination of the lower part: a = 400

1- Maximum Flow Qmax= 7.2 m3/s

+ Maximum Atmosphere Pmax = 1.3 M:Pa

+ Testing NM aximum Atmosphere Pthmax = 1.65 MPa

- Water Divide Chamber

+ Transition Raclius R = 3,500

+ Inlet Diameter (P= 1,500mm

+ Outlet Diameter (P = 800mm (3 outlet pipes), 6=11 mm

+ Maximum Inlet Flow Qmax = 7.2 m3 /s

+ Maximum Outlet Flow through each pipe Pmax 2.4 m3 /s

+ Maximum Atmosphere Pmax = 1.3 MPa

+ Testing Maximum Atmosphere Pthmax = 1.65 MPa

40

- Diversion Canal:

Reinforced concrete diversion canal has a triangular section with a widthof 2.2m, a height of 2.3 m and an inclination of 0.0015. It is designed todivert a flow of 7.2 m3/s. The diversion canal works in the type of non-regulation.

- Spillway

To create a reservoir with enough storage for regulation as required, thespillway should be built of rocks with reinforced concrete when there isflood on Vang fiver flowing through spillway with highest water level of139.8m, Qmax = 1605m3 /s.

+ Crest elevation = 134m

+ Crest length = 44m

+Max. height = 4.5m

17. Annual energy productions of the last three years are as follows:

22,290,96OkWh; 22,735,92OkWh; and 25,246,48OkWh in 1998; 1999 anl2000 respectively.

1 8. Break-down

- Excitation system is always broken down- Oil controlling pumps and oil lubricant pumps are also often broken

down- Road system along upper water channel is often damaged by flood.- Automatic controlling system for Units does not operate.

12. Recommendation of Electricity of Quang Nam

- Repairing of the excitation system so that it can operate in a stablecondition.

- Replacing of all kinds of oil pumps.- Rehabilitating of automatic system of units- Increasing/irnproving thle volume of reservoir.

Signed and sealedBy Mr. Vu Van Nghiem

Vice Director of Electricity of Quang Nam

41

Annex 2

Socialist Republic of Vietnam

INDEPENDENCE - FREEDOM - HAPPINESS

An Diem, 1 5 A Mcay, 2001

Minute of meeting(Subject: Study to support the Rehabilitation and Upgrade Project for An Diem Hydropower Plant.)

Today, at 7.00 am. in An Diem Hydropower project, We are:

Representatives of Power Engineering Consulting Company No.1 (PECC1):

Mr. Tran Xuan Tuy, Electrical Senior Engineer, Deputy Manager of Hydropower Design Division2, Head of PECC1 delegation.

Mr. Pham Trong Nghinh, Environmental and Hydrological Engineer.Mr. Vo Sy Thu, Hydro-engineering Engineer, Project Manager.

Mr. Do Van Duc, Environmental and Hydrological Engineer.

Mr. Le Ngoc Ha, Electrical Engineer.

* Representatives of Power Company No.3 (PC3)Mr. Nguyen Nho Chau, Expert.

* Representatives of An Diem Hydropower PlantMr. Tra Quang Huu, Director.

All together discus.s and find out the fact at site about the operating conditions ofequipment, architectural works, hydro-engineering works of An Diem sincethe first commission up to now so as to prepare the rehabilitation andupgrade project.

After listening to Mr. Huu, Director of An Diem Hydropower plant reporting onthe whole situation of the Plant and after studying the project site, we all agreewith following matters:

Hydro-engineering System and Auxiliary Works:

1. Diversion channel: Along the channel, there are places with water seepage through joints;concrete is worn out with reinforcement exposed. Seepage also occurs in stone walls ofsurge tank.

2. There has not been any rubbish-lift in front of the trash rack of surge tank.3. There are 7 lifts for gates and trash racks from the surge tank to reservoir, which are

usually broken down during operation.

4. The daily regulated reservoir is filled with sediment so the water volume for regulationaccording to design is not sufficient

5. There are seepages in the main machinery hall and the place where electrical equipmentis installed.

6. Surface of access road from the powerhouse to surge tank is damaged, so the drainage system is.

42

7. The passage to living quarter of the plant which crossing Con river: The abutment in thenorth bank is eroded because the flow has changed its directon to the north.

8. It is necessary to rehabilitate the plant's architectural.9. There has not been a water supplying system for workers inside the powerhouse.

18.1. Mechanical Equipment1. The turbine pillow has been replaced but it has not met the requirement on manufacturing.2. Thrust bearing of turbine and generator are all worn out.3. The brush is evenly worn out, has been repaired but not met the operabng requirement.4. The eroded runners have not been replaced, making loud noise when operabng. The

guide vanes are also worn out creating gaps so that efficiency is reduced.5. Valve system of the main penstocks and of the three penstocks to turbines are worn out,

creating gaps. The valve director is operabing with lack of reliability.6.- During operabon, the governors are not stable.7. Auxiliary equipment such as oil pump, air compressed pump, oil pendulum pump, air

compressed tank, butter fly valve lifting system, etc,.. .are often broken down while thereare not enough spare parts for replacement.

18.2. Electrical Equipment1. AVR and block rectifier are operating in unstable forced regime, creating incident2. Electrical equipment such as protection relays, interpose relays, signal relays have been

damaged. There are no synchronous equipment for replacement3. Measurement equipment (thermal meters, electrical meters) has big errors that cannot be

replaced because there is no new equipment being sold in the market.4. The transformer T3 with 0.6kV DC resistant is different from the operating standards and

the problem has not been solved.5. In rainy seasons, electricity supplied for the plant is always cut off, causing shortage of

electricity for flood protecting works (water pump, protection lighting, emergency cases, etc...).

1 8.3. Communication

Because of its length (1,500m), the telephone line always faces with incidents.Priority electrical and mechanical equipment:

(they should be paid close attention)1. It is necessary to have a contingency generator in case electricity supplied from the grid is cut off.2. A stable communicaton system.3. Priority equipment for replacement: Oil pump, air compressed pump, air compressed tank,

governor, AVR, protecton relays, interpose relays, signal relays.4. Make new design for rubbish lift in the surge tank to reduce interrupting time for rubbish

lifting and to increase operabng effectiveness.

PECCI PC3 An Diem HPP

Signed by Signed by Signed byMr. Tran Xuan Tuy Mr.Nguyen Nho Chau Mr. Tra Quang Huu

43

Annex 3

Electricity of Viet nam Power Socialist Republic of VietnamCompany 3

*------- *** -------- Independence - Freedom - Happiness

No. 1750 EVN/ DL3 -8 - - ----------------Da Nang, 23rdMa-V. 2001

Subject: Preparation of Feasibility Study Report (FS) on An Diem and Kon Dao Hydropower Plants with loan borrowedfrom the World Bank (WB), 2002 - 2003.

To: Power Engineering Consulting Company No1 (PECC1)

Based on the contents of the meeting dated 21s' may, 2001 in head office of Power Company 3(PC3) between PC3 and PECCl about the preparation of Feasibility Sutdy Report (FS) on theRehtlillitation and Upgrade projects for An Diem Hydropower Plant in Quang Nam provinceand Kon Dao Hydropower Plant in Kon Tum province with invested capital for the two projectborrowed from the World Bank (WB) in financial year 2002 - 2003, PC 3 has followingcomments:

1. General Requirement:

Based on the current situation of the two above hydropower plants, PECC1 is kindly. required to study rehabilitating and upgrading alternatives to meet following

requirements:

- Make sure that the plants will operate continuously in a stable and safe conditionso that they can develop with maximum capacity.

- Improve working condition of the operators in the plants.

We would like you to have comments, comparison so that we can number the priorityorder for work items that are necessary to be rehabilitaed and upgrade in eachilternatives. The selected alternative will be the optimum one in term of technical and

oconomic efficiency.

2. Proposals for Studying and Evaluating

a. An Diem HPP

- A-system of eletro-conductivity and repairing of valves should be equipped in theheadwork area.

- Rehabilitabng and repairing of bearing pillows for turbines and generators.

- Rehabilitating and repairing of governors.

- Improving of working condition in the control building (temperature, noise).

44

- Treating of leakage and seepage places in hydro-engineering works and in themachinery hail.

- Treating of sedimentation in the reservoir and absolutely solving such matteroccuring in the downstream of the plant.

- Rehabilitating and.replacing of the secondary equipment of the electrical system inthe plant (synchronuouly).

- Rehabilitating and upgrading of the internal access road inside the plant.

b. Kon Dao Hydropower Plant

- Upgrading of electrical system in the plant.

- Improving of turbine and generator efficiencies.

- Repairing of turbine bearings.

- Overcoming the interuption of the generators for rubbish collecting.

- Evaluating of the expansion plan for the plant in hydro-energy, layout and civilworks.

Note: The above proposals are for refference only. The alternatives mnentioned inFS will be absolutely depended on the studies and evaluation of your Company,

3. Time of Preparing the FS

First of all, PECCI is kindly required to:

Prepare and submit the detailed plan for investigation work as soon as possible.

Because of the urgent requirement given by EVN, PECC1 should complete andhand over the FS and EIA of the two above projects to PC3 prior July 151', 2001.

VWe are looking for your attention and co-operation.

Signed and sealed

By

Mr. Thai Van Thang

Vice Director of Power Company 3.

45

Annex 4

Electricity of Viet Nam Socialist Republic of VietnamPower Company N'.3 Independence - Freedom - Happiness

No: 1946 DVN/DL3-8

DANANG, JUNE5T5', 200/

Sul)ject: Agreenmenit for Investigationt on the Rehabilitation anid UpgraleProject for An Diemt, Kont Dao HPP.

To: Power Engineering Consulting Company Nol (PECC1)

Power Company N°.3 (PC3) has been received the draft of the investigationand design plan for preparing of the Feasibility Study Report (FS) on An Diemand Kon Dao Hydropower Plants carried out by PECC1.

We agree with PECC1 about the above work items as defined in the draftplan. However, PECC1 is kindly required to pay attention to some more itemsmentioned in the enclosed annex as well as to complete and submit the FSand EIA to PC3 prior July 15th, 2001 in accordance with the requirements ofEVN

Signed and sealed.By

Director of Power Company N03

46

ANNEX 4 (CONTINUED)

(Enclosed with document No1946 EVNIDL3 - 8 dated June 5th, 2001)

1. Kon Dao Hydropower Plant

- PECC1 is kindly required to clarify the necessity of expanding one more chamberfor control cubicles and panels.

- Replacing of butterfly valves in front of Generator 1 and 2.

2. An Diem Hydropower Plant

- It is necessary to check and strengthen the turbine bearings.- It is necessary to calculate alternatives for road surface from spillway to surge

tank.

3. General Works

- You are required to number work items in priority order.- It is necessary to calculate economic and technical benefits when replacing the

governor.- Prepare suitable and legal bills for establishing cost estimation.- Based on the actual condition to have a suitable quantity of works.

47

ANNEX 5

SOCIALIST REPUBLIC OF VIETNAMIndependence - Freedom - Happiness

Dai Lanh, 15 .anuary 2002.

MINUTES(COMMUNITY CONSULTANCY ON IMPACTS OF

AN DIEMvl HYDROPOWER PLANT)

The meeting opened at 8:00. p.m on 15 January 2002.

Place: People's Committee of Dai Lanh Commune, Dai Lanh district, Quang Nam province.Subject: Consulting local people on the An Diem Hydropower Plant.

A. Attendants:

Representative of People's Committee of An Diem Commune

1. Representative of Power Engineering Consulting Company N°. 1

Mr. Vu Si Thu - Project Manager.2. Representative of An Diem Hydropower plant

Mr. Tra Quang Huu - Director of An Diem Hydropower plant

3. Representative of Peasants' Organization in the CommuneMr. Do Phu Coi - Chairman of Peasants' Organization

4. Representative of Veterans' Organization in the CommuneMr. Nguyen Van Dao - Chairman of Veterans' Organization

5. Representative of Woman's Organization in the CommuneMrs. Nguyen Thi Kim - Chairiman of Woman's Organization

6. Representative of the Older Organization in the Commune

Mr. Tra Quang Thang - Member of the Olcder Organization

B. CONTENT AND COMMENT

Mr. Vu Si Thu - Representative of Power- Engineer-ino Consullinig Company N". I andMr. Tr.a Quang tluu - Director of An Diem Hlydropower plant

presented the contents, purposes of the pr-oject and its impacts on householdls and theenvir-onment sun ouniding.

- Attendants examined related document, made clear comments on impacts of theproject, gave applied solution to minimize impacts on households and theenvironment.

- Attendants gave their opinion as the following:

1. The representative of People's Committee of Dai Lanh Commune

48

- We agree with the direction of People's Committee of the province for thefollowing reasons: it is necessary to meet local people's poweer demand.There is no impact on the environimenit and there is no resettlement.

2. The representative of Peasants' Organization of Dai Lanh Commune

- We agree with the rehabilitation and upgrade project of An Diem HPP.

3. The representative of Woman's Organization- We agree with the project.

4. The representative of Veterans' Organization

- We agree with rehabilitating and upgrading of the An Diem HPP.5. The representative of the Older Organization

- We agree with the project.

6. Other attendants- We all agree with the report of environmental impact assessment in the project.

Attendants:

1. Mr.Luong Tan Thanh (Signed)

2. Mr. Vu Si Thu (Signed)

3. Mr. Tra Quang Huu (Signed)

4. Mr. Do Phu Coi (Signed)

5. Mr. Nguyen Van Dao (Signed)

6. Mr. Tra Quang Thang (Signed)

7. Mrs. Nguyen Thi Kim (Signed)

49

SALIENT FEATURES OF AN DIEM HPP DAM

1. Year of design :1991.

2. Design Company: Power Engineering Consulting Company 1

3. Company in charge of filing/reservation: Power Engineering Consulting Company 1

4. Type of Dam: Dam with un-gated spillway.

5. Structure and material of the dam: Rock built with lined reinforced concrete.

6. Crest length L = 44m.

7. Maximum height : Hmax = 4.5m.

8. Maximum width : Bmax = 12.8m.

9. Spilling discharge : Qmax = 1605m31s.

10. Net head/spill head : H = 5.8m..

11. Dam Stability : The dam is calculated in such a way that it enable the stabilityof itself in all operation regimes/modes designed according to Vietnamese Standard.

50

107 30 t 0l 0108 )30

Bnh|Dan\ / W \ \ / ( 1;-\ o 10 20 30hn

\ S~~m D o30 Bach Ma / C

-L J / ( < t~~~~~~~~~~~nSa c ( ){ roneg Nhat / C 2 ^u

/ 4 Sc nP?pc0 (2 2( ?oa So

So~ ~ ~~~~~~o

'16° s I /~~) Quyst g, (-/\ . 6

dam sitd 1 AiN9hia / VinhsDiation

. - CtShmentbocebouoi Khach / Giao Tduy yau

Meteorologcalh My ag Binh

Q Rain station Water lenNong Son Q

Fi 1.1 Lction of- -An Dimprjcte

So ' i\ (< , /C1 2 9>?~~~~~~~~~~Tien PhuocI 59

1703t TM ° ' 101 CO

LEGEND_ ; ~~~Dam site Hydrological station

- . . . . . . . . Catchment bolundary -Province bounldary

(5) Meteeteorologicaltstatio

Water level stadon0 Rain station

Fig 1.1 Location of An Diem project area

Spillway of An Diem HPP

Downstream of Powerhouse of An Diem HPP

CONG ITY DIN LU'C 3 C6NG HOA XA HOI CHII NGHIA VItT NAMDIEN LUfC QUANG NAM Doc lap - Ti do - Hanh phuc

So: 4-. . DL3/DQNa-4. Tam Kv ngay3 thihng•Mmndm 2001."Vtv: LDp BCNCKT dia tn TD An Didn;

Kon Doo vin v WB2002-2003.

2444A/ ) IKinnh gdi: (Nozig Ty Dien Luc 3

Thtic hiTn c6ng v3n so 1405 EVN/DL3-8 ngay 25 thang 04 nam 2001 v/v l.pBCNCKT du an TD An Diem, Kon Dao von vay WB 2002-2003. Dien lLfc Quang Narnibio cao cac noi dung theo cong van nhU sau:

I - Nam xay dufng :Bat dau xay dyng tif nam 1986.2 -Nm dtfavio v an hinh: Bat dau van hhnh nam 1991.3 - Mi) phat dien:

- Noi san xuat: lIang SKODA Tiep Khac.- Ki'u H 540530/6.

- C6ng suat S = 2350 KVA, P = 1880 KW.- Dicn ap dinh miic: 6300 V.- D6ng dien Stato dinh mfc: 215 A.- T6c d6 dinh m&c n dm = 1.000 v/p, f= 50 Hz.- Kieu dau day Stato Y.- MNm san xuat: 1987.* I1c thon" kich tlu:- Kieu kich tai tinh, chinh lLIu bang thyristor, lAm mat bang qu'at.- Kich tkf khong tai: 26V - 85 A.- Kich t dinh mLfc: 85 V- 188A.

4 - Turbine:- Kicu turbine: Francis truc ngang. F20 - 650- Chieu quay : phai ( nhin ti phia truc may phat).- Hang sin xuat: BLAN-KO Tiep K hac.- Chieu cao cot nu6c 1-1 = 94,6 m

- Chieu cao cot nudc tinh toan Hu. = 93,95 m- Chieu cao c6t ntf6c nho nhat Hmi = 93,6 m .- Chieu cao ha t6i thieu Hs j = 4,S m.- Lru h1IIng ni.dc cu'a 01 miy Q ' = 2,4 m 3 /s.

- Dtdang kinh banh xe c6ng tac D = 650 mm.

- Truc turbine c6 dUfng kinh + = 150 mm, chidu dai L = 1,5 m.

- S6 cinh htdng: 18 cinh.

5 - May bien ap chinh:-NUdc san xuat: Tiap khAc .-Nam sin xt: 1987-C6ng suAt dinh miic: S = 2500 KVA.

-Capdienap 36.750V + 5%/6.300V-Tans6: f= 50 Hz.- Dong dicn dinh midc phiia cao I dnC = 39,3 A- D6ng dinh mdc phia ha :1I dm = 229,1 A

-Dien ip ngan mach Uk% = 6,19.- Trong lUcing: 8580 kg- Trong lIfong dau 1860 kg.- To dau day: Y/, -1 1- Lam mrt bang dau va canh t6a nhiet .

6 - lAiy bicn ip ti! dung:- Nudc sin xuat: Tiep khac .- Nam san xuat: 1987- C6ng suat dinh mdc: Sdm = 400 KVA.- Udm cao = 6.000V 5%.- Udm ha = 400V231 V.- D6ng dien phia cao: I cao = 38,5 A.- D6ng didn phia ha: I ha 577 A.- Dien ap ngan mach: Uk% 5,85.- Trong 1drong 870Kg- Io dau day: NY -12- Loai bicn ap kho.

6 - Mav cat 371, 331, 332, 333 (35KV tram bien ap nang):- N'liy cat it dau.- Ifithg san-Axuat: ZSE cua Tiep Khacc.- Lieu: GMI-V744.- Dien ap dinh mdc: Udm 35KV.- Dong dien dinh mdc: Idi = 1250A.- D6ng dien cat: I 20 KA.- Dien ap dieu khien: 110 DC.

7 - Dien ip f6I dau ngi: 35 KV8 - Mo ta sor lfqc ve ket ciu cda nhi miy:

a) 1 f:uf- H8 dieu tiet nhA miy thAy dien An Die"m dUtc xly duSng tren s6ng Vang la mot

trong nhieu nhanh cu'a song Vu Gia. Luu vifc cu'a hS c6 danh hinh li cay x6e, rong vephia-thifong nguon va co hep 6 gitla. Dia hinh Iru vtfc hau hit la phAn doi ndi, nghiengtheo hudng tCr Tay sang D6ng. D6 cao trung binh Ia 450 m. S6ng suoi trong khu vLicquanh co uon khuc theo dia hinh, do d6c song twang doi ldn .

+ Cac thong sA chinh:-Dien tich lu'u vuc = 205 km.- Chicu dai s6ng chinh = *0 km-D6 r6ng binh quan Lru vulc = 6,38km- D)ung tich cu'a ho = 156.000 mi- Mfc nmdc khai thic (nLldc dang binh thu6ng) = 134 m- Mic nUtdc chet = 130 m- LUu 1uong diMu tiet = 7,2 m3/s- C6ng suat dieu tiet = 5.400 kw- Th6i gian dieu ti.;t = 05 gia 23 phut.

b) D:(uigAgiipii/.- Dutong kinh: 1 =.500 mm.- Chieu dai dUang 6ng: L = 160 m.- 6 dav cua dL.ong 6 ng: 3 = 14mm.- Vt liu loai: 11373 Theo TC Tiap Khc CSN 411373 va PN 425310- DO nghieng doan tren c = 30 , doan diidi x 40° .- LL£U ILfong ldn nhat: Qv= 7, 2 m 3 /s.

- Ap suat 16n nhat P,J,, 1,3 MPa.- Ap suit th' Idn nhat: Phzzax = 1,65 MPa.+ Gian chiia nfoc:- Bin kinh chuy-en tiep: R= 3500.- DOtne kinh vao: 4 = 1 500mm.- DLong kinh ra: 4= 800 mm (03 6ng ra) . = l0mm-LiJu lWlong lon nhat vao: Qmax = 2,4 n x 03L LLI LIhing ldn nhat ra tctng ong Fmax_ 2,4 m -/s.

- Ap suat lon nhat: Pmax = 1,3 MPa.- Ap suat thi ldn nhat: P,h,,,m. = 1,65 MPa

c) Kenh dA&vWcz.- Kenh dan ntcic b.ng be6ng cot th6p c6 mat cat chsl nhat ro.ng 2,20 m, cao

2,3m, d6 doc day i - 0,0015 . DUdc thiektke vdi ltu lIcdng phat dien Q =7,2m3/s.

- Lfu luong tinh toan bIn nhat Qx= 7,92 rn3/s. Kenh da`n Iam viec theo hinh

thdc Ich6ng ttt diAu tiht d) E4P.di2ngirh&ng4nso^ng:Nham tao hS chUa c6 du dung tich de dieu tiet nUdc theo yeu cau dap tran bdn dtLoc

xay dting bang di boc bMt6ng cot thep.-D6 cao dinh dap =134 m- Chieu dAi dinh da.p =44 m- Chieu cao ldn nhat =4,5 mKhi n.f6c song Vang c6 lu dong th6i vci nUldc trAn qua dap, nUtdc 1u tran qua ditih

cong, phan noi tiep vdi ba ben phai. Mdic li cao nhaL: V139,8m, Q = 1.605 m'/s9 - Sin lufong trong ba nam gan da) nhat:

- Nam 2000: 25.246.480 KW.- Nam 1999: 22.735.920 KW.- Nam 1998: 22.290.960 KW.(So gi6 to' miy mang cOng suat cuIc dai 65 % tong so gid van hanh)

10 - Nhd'ng stf c5 thu'tng gap:I) Thtidng bi hong kich tu.2) Cic bcrm dau dieu khien, bdm dau b6i trcin thLUang bi h6ng truc dan dong va cic

bac chAn.3) He thong dufng doc kenh dan nifdc thutfng lutu thufdng bi h6ng khi c6 fi 1lut xay

ra.4) He thong tiI dong dieu khien t6 miy kh6ng hoat d6ng.

11 - Nhing kien nghi cua Di?n ILfc Quang Nam:1) S;ta chaa, khac phuc ha th6ng kich i sao cho he th6ng lam viec dn dinh.2) Thay cac brom nhdt b6i tron, bWm nhdt di^eu khien va gia c6ng cic khop noi cho

ph6 hop ( lau nay chi gia c6ng phuc hoi tam th6i).3) KhMc phuc he thong tn dong cua to may.4) Nang cao dung tich ho diEu tiet de tan dung lIfIng ntifdc thtia.

Dien Itc Quang Nam xin k[nh b6o.--

VGIAM DO

- Nhutren. 2* I ' B"Ban Giam doc. iAJflUANGltAS % 7

-Luu P1, P4. \.IYPI LUG ,

4<"p8M''CeiZ*-2 ,,I;pf

CQNG HOA XA HOI CHU NGHIA VItT NAMThc l4p - TV do - Hanh phtic

An didm, ng6y IS thang 5 ndm 2001

BItN BAN(VYA: Tim hi/u £hrgc liphuc vy c6ng tac cJi tao ndng cdp nha mdy Ih'y din An diSm)

H6m nay vao luc 7h 00 tai nha may thuy ditn An Ditm chung t6i g6m c6:Dai di?n C6ng ty ttfv6n xiy dung divn 1:

1/ Ong: TrAn XuAn Tuy2/ Ong :'Pham Trong Nghinh3/ Ong: V6 Sy Thu4/ Ong: D8 Vwn DOcS/ Ong: U NgQc Hia* DOi di?n C6ng ty dipn ltc 3:1/ Ong: Nguy6n Nho ChAu* DOi diln Nha may thuy divn An diem:1/ Ong: Tra Quang HWu

Cing nhau ti&n hinh thio IUin vi tim hilu thuc ti tai hien tntang vi t;nh trang lim vieccua cac thi4t bi, cong trinh kien truc, c6ng trinh thuy c6ng thuoc nhi may thuy dien An Diem tdfkhi dtia vio van hinh den nay de c6 cd sd lap phudng in ca5i tao, nang cap.

Qua bao cao tiah hinh chung toan nli may do D/c Hiu giam doc trinh bay vi sau khixem xet hien trWdng ching t6i th6ng nhat cac van dA sau:I/ H? th6ng thuy c6ng vi c6ng trinh phly trq:I. Tuyin k1nh dln: Mot s6 v; tri nmc thalm khe noi kenh, bF tong bi bao m6n nhin thAy cot

thep. TiIang da xAy bl ap Iilc bi thAin.2. Tai lu6i ric bi ip Itc chfa c6 ht th6ng vdt ric.3. Ho thong nAng ha (banh vit, t"uc vit) cinh phay, hidi rac t bi ap Ithc dSn hA ditu tiet 07 cai

thu6ng xiy ra hit h6ng trong v±n hanh.4. HA dieu tiAt ngay dem bi boi lang n8n kh6ng dam bao dung Iutfng nu6c ditu titt theo thiet ke

ban dAu.5. Cong trinh ndi dat gian miy chinh va thikt bi dien bj thAm ntildc m6t s6 vi tri.6. DLfdng ti khu nha lam viec den b6 ap lhc bj h6ng be mAt, hd th6ng thoat nudc khong dam

bao.7. Cau trin qua song Con tren duang vao khu tap thi nhi may, m6 cAu phia bAc bi xoi h6 do

d6ng chay cu'a s6ng con thay d"Oi (hudng vA phia bSc).8. Cong trinh kiAn tric khu nhi may cAn cai tao de dan bao my ky thuat.9. Chtta c6 he th6ng cung cap nudc cho cong nhin lam vitc tai nhi may.I., Cic thitt bi cd khi :1. Goi tu6c bin twd,c day bi hong (nut) di thay th6, nhttng chila dat ytu cAu vt chi tao.

2. Cd truc tuoc bin, may phat bj bao m6n.3. Cd gop bi bao m6n kh6ng deu, di xt 1 tibn trnc tiep nhung chUa dat yeu cAu van hanh.4. Banh xe c6ng tac bi xam thiic bao m6n chtta thay the, ti6ng on ldn so vdi khi moi dUa vao

va.n ha.nh. Canh htdng bj bao m6n dong kh6ng kin, hiOu suAt may giAm.5. HO th6ng van ditang 6 ng chinh va van diadng 6ng vio 03 may bi bao m6n van va than van,

d6ng kh6ng kin. Ht th6ng d6ng m6 van lin viec thi6u tin cay.6. HO th6ng diMu t 6c thtf&ng khong cn dinh trong van hAnh nhAt lia khi vAn hanh lhdi doc lap.7. ThiR bi phu tr : Bom dau b6i wn, dieu khicn, borm dAu con lic, bdm khf nen, binh tich

n1n& hO th6ng nAng ha van dTa hay hif hSng kh6ng c6 phu tung thibt bi du ph6ng thay theIII. Thict bj dienI. Ha th6ng ttl dong dicu chinh dicn ap may phat (AVR, b6 block chinh WUu) lam vicc 6 chc dcj

ctiOng bdc kh6ng on dinh, thu6ing xuyen xay ra sif co, kh6ng c6 kha nang vAn hanh doc lap2. Cac thiet bj dien (ro le bao vc, ro le trung gian, rci le tin hiWu) hien di hi. h6ng, nhUng kh6ng

c6 thiet bj d6ng b" thay the.3. Cic thiet bj do ltfdng (dong ho dien, nhidt) sai s6 do ldn chtfa thay th6, nhAt lia dong ho nhidt

kh6ng c6 tr"n thi tul6ng.4. May biEn ap T3 diEn tr6 I chieu phia 06KV lch qua tieu chuan v&n hanh chtia x 1j diioc.S. Nha may thtL6ng bi mit dien lu6i trong mua mtia lu, kh6ng du dieu kien trong cac tac ph6ng

ch6ng lu ( bom nifdc ro, anh sing bao ve, xd 1l slf c6...).IV. Thitt bi th6ng tin:- Ditn thoBi thit.ng bj si co do dufng dAy keo xa (1500m).V. Cic lhang muc ve thie bi cod, diun tfu tien: (khi cai tao nAng cAp cAn lLtu y m6t so hang muictr9ng tAm)1. C6 may ditn dif ph6ng dg x 1y sif c6 bAo lut khi kh6ng co nguOn ditn lItdi.2. H~ th6ng thong tin dam bao.3. Thift bi utu tien cAn thay the: Bdm dAu, bdm khi nen, binh tich nfing, di8u t6c, AVR, rd le

trung gian, rd le bio v6, rc le tin hitu. Khi thay the thie bj cin phai c6 thiet bj dtt ph6ng.(utt tidn phAn kich tir va diu toc de nlii may c6 kha nAng v5n hanh dn dinh trong mgi dieu kiindl dam bAo cung cap dien cho khu vlic theo y8u cAu).4. Thik kA mdi he th6ng v3t rac tai be ip lc de giam th6i gian dcing may dl vdt rac, tAng hieu

qua vn hinh.C6NG TY TV XD DI:N I C6NG TY DI:N LVC 3 NM TD AN DIlM

T ;? Xu A a

T6NG CONG TY CONG HOA XA HOf CHU NGHIA Vlf-T NAMNIDIgN LIt VItT NAM DOc lap - Tlr do - Hanh phu6c------------------------ ------------------ -PSH

CONG TY DIEN LI1C 3S6 1750 EVN/DI 3-8 D,i NWhg. ngtiv 23 fhim.S .iom m , S

Vi. LDip BCNCKT di.6n TU) An Di6n,Kon DJco v6h vay WB2002-2003

Kinh gai: C6ng ty Ttr va'n xay dtrng dicn 1

Triin lti li uir (ciic l6e ) op i v' 2 1/5.1'2)(2 0 i (>a l g v Jt f niin lixt , ;id ci. (Yn-6'- IN, tr v.n xi.y dtrng di(nl I \'C vic( lAp IWao cAo) ngi6l k triti 0. iOi l I

I)II1eC 1h6i C-A: lt(o C;ic Irrlln 1hu1U dicn nih6 lliLiy dicn An D)i6iu- 1 ub Qu,i. . .II.'Thu5 di6n Kon Dao- Tinh Kon Turn sur dlng vOn vay cua NgAn h'ang thd '.. w .thonig t4i kihoa 2002-2003, COng ty Didn lurc 3 c6 y ki6n nhu sau;

1. Ydu ciu chung:

Tr6n ca s& tinh (rang hi6n tai c'ua 2 nha may th'uy di8n, d, nghi Qll; C6nP tvnghifin ctru cac phuong an phuc h6i, cai tao bao dam drcmc cAc y8u ciu sau:

- Bio dim cAc nh i mAy van hanh lien tuc, 6n dinh, an toAn va phal hi's'i!rai c u"idit nang lLrc ngu6n thuy natng cua cAc nh3t my.

- CAi thidn di6u kitn lAm vidc cua cOng nhan van hanh nha may.

Dd nghi Quy Cong ty c6 danh giA, so sAnh dd sap x6p thu tir tu tien cho ca.chang muc can cii tao, phuc h6i trong cac phuarng 6n. PhlrcTng an drrc kra chon si i.phucirng in t6i uu v6 k9 thuat vdt hitu qu^. k inh t6.

2. M6t so de ragii de nghitn curu, dainh gia

(1. 7',I- diet An WDidn:- Trang bi ha th6ng truyen dQng dien va sira chua cac van thu6c khu VLrc dau

m6i.- Cii tao, sha chia cac g6i da truc t6 mAy.- C;ii tao, sira chaa cac b6 dicu 16c.- Cai ilihlil di6u kiln lam viec tai ph6ng dieu khii-n van hanh (nhiet d. Imng ei ,.- Xir 1y cAc ch6 ro, lh,Xm cua cOrng trinh thug cong va gian may.- Xu 1) hicn tuIrng b6i lano iai h6 dieu Ii6t va khac phuc triet d1 hiih lhruat n.i

La. ha lru nh3 mAy.- Ctai lao, ihay Ih6 d6ng b6 phan nhi thr ciaa he th6ng dien nh'.i m.iy.- Cii lao, nang c.p hc th6ng durang.ii b6 cua nh?A miy

1). fhu! diten Kon Wm:o.- N.ng cfrp h6 th6ng dien iai nha mAy (phini nhAt th(r va nli thCr)- N.'iig cao hieu suwit cia cAc r6 mAy- Cii lao cic 6 d niuc ita bin (dang dang bac bang g6li- Khac phuc vicc phai dmng mAy dd v6t rAc.- Dlnh giA khi nAng ma rOng nhA mAy v6 c6c mAt thuy nAng, mAt batng h1(i in.

c6ng tAc xay durngv.v...

LuiaL: NhOng de nghi neu tren chi c6 tinh chAt tham khao. (Ac phucmg Ain scdu'c d6 cAp trong BCNCKT hoAn toAn ruy thuoc vAo viec nghifn culru dAnh giA c.aa Qu(Cong ty.

3. Thbi gian lp BCNCKT:

Tru6c mAt dM nghi C6ng ty ttr vY xAy dlng dien 1:- S6n lap va teinh d6 cuang chi ti6t c6ng tAc khao sAt.- Do ydu c'iu cap bAch c6ia T6ng C6ng ty, d6 nghi Quy C6ng ty hoaIn h,'milil .,

n6p h6 sor BCNCKT va bao cAo dSnh giA tAc d6ng m6i tng6ng 2 du An hrt clio (Y Coiip iDien lurc 3 tru6c ngay 15/7/2001.

RSt mong nhan ducLc su quan tam hcip tAc cda Quv C6ng ty4

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So6--JQLY._LTB/UB Dai lJnhl/, ngav 06 t/lClg 02 tidm 2002

THONG BAOv/v cai tao, phuc hidi thu} die,n An die'm

UBND XA DAI LANH traii tron- t]iCMng Mao:VIien nay nganh dien dano cO ch.i trlrrYng cai tao. phuc hai, nAng

c.Yp nhL rn<av th4US die.n An dirnz rhllirn oLlta,n cao san ILtong v%i ch7irhtfrng ciicn -inng phuc vu cho su phal triefn kinh te xa hoi ciua tinh nh.'

Tneo de nghi cua Dien 1luc tiih QuAThg namn, UBND xa Dai lanh xinthMng bao den toan the nhan dan trono xi ve. chuI trrncrng nay.

NIThung ho gia dinh nao c6 vuwOn makc \ve anh hut&ng cCua dui an densin xuat hoac c6 kien nghi gl, xin mni d-en UJBND xa de giai quyet.Thai han giai quy6t tir ngay ra thli6g bao ncty den h6t ngay 15/02/2002.

Rat mong nhan dan trong xa huu thuc hien.

Nosi nhan: TM.UBND XA DAI ANH,< es TICH 1

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