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Environmental Impact Assessment (EIA) Study Seti Nadi Hydroelectric Project (25 MW)
Kaski
August, 2019
Submitted To:
G o v e r n m e n t o f N e p a l
Ministry of Forests and Environment (MoFE)
Through
Department of Electricity Development (DoED)
Ministry of Energy, Water Resources and Irrigation (MoEWRI)
Proponent:
Vision Lumbini Ltd.
Butwal-8, Gurudwara Path,
Rupandehi, Nepal
Tel: +977-071-544316
Email: [email protected]
Prepared by:
Environmental and Health Services International (P) Ltd. in
JV with Nepal Rural and Advancement Committee Pvt. Ltd,
GPO Box: 10443, Bijulibazar, Kathmandu, Nepal
Tel: +977- 1 – 4491538/ 977-9823104085, E-mail: [email protected]
mailto:[email protected];mailto:[email protected];
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC i
LIST OF ABBREVIATIONS
AMSL Above Mean Sea Level
BS Bikram Sambat
CAR Catchment Area Ration
CBO Community Based Organization
CBS Central Bureau of Statistics
CC Contractors
CF Community Forest
CFU Community Forest User
CFUGs Community Forest User Groups
CITES Convention on International Trade in Endangered Species of Wild Fauna and Flora
CSP Community Support Programme
CSP Corporate Social Performance
DCC District Coordination Committee
DHM Department of Hydrology and Meteorology
DIA Direct Impact Area
DMG Department of Mine and Geology
DNPWC Department of National Park and Wildlife Conservation
DoED Department of Electricity Development
EIA Environmental Impact Assessment
EMP Environmental Management Plan
EPA Environment Protection Act
EPR Environment Protection Rule
ES Environmental expert
ESS Environmental and Social Section
ESSD Environmental & Social Safeguard Division
EU Environmental Unit
FDC Flow Duration Curve
FGD Focus Group Discussion
FUG Forest User Group
GHG Green House Gas
GIS Geographical Information System
GLOF Glacier Lake Outburst Floods
GMPIU Grievance Management and Public Information Unit
GoN Government of Nepal
GRC Grievance Redress Committee
ha Hectare
IBMP Issue Based Management Plans
ICIMOD International Centre for Integrated Mountain Development
IIA Indirect Impact Area
IP Indigenous People
IUCN International Union for Conservation of Nature
KIS Key Informant Survey
km Kilometer
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC ii
Kv Kilo volt
LARGMS Land Acquisition, Resettlement and Grievance Management section
LARU Land Acquisition, and Resettlement Unit
LDOF Land Slide Dammed Outburst Flood
m Meter
MBT Main Boundary Thrust
MD Managing Director
MIP Medium Irrigation Project
mm Millimeter
MoEWRI Ministry of Energy, Water Resources and Irrigation
MoFE Ministry of Forests and Environment
MT Metric ton
MW Megawatt
NEA Nepal Electricity Authority
NGO Non-Governmental Organizations
NTNC National Trust for Nature Conservation
NTPFs Non-Timber Forest Products oC Degree Centigrade
OC Other Contractors
PAFs Project Affected Families
PD Project District
PHC Public Health Clinic
PHCCs Primary Health Care Centers
PMF Probable Maximum flood
PMP Probable Maximum Precipitation
PoE Panel of Experts
PRM Project’s Rural Municipality RM Rural Municipality
RRA Rapid Rural Appraisal
SD Scoping Document
SE Supervising Engineer
SNHEP Seti Nadi Hydroelectric Project
SPAF Severely Project Affected Families
SSMP Site Specific Management Plans
SU Social Unit
ToR Terms of Reference
VDC Village Development Committee
WECS Water and Energy Commission Secretariat
ZoI Zone of Influence
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC iii
TABLE OF CONTENT
CHAPTER 1. INTRODUCTION .................................................................................................................................... 1
1.1 PROJECT BACKGROUND .............................................................................................................................................. 1 1.2 PROPONENT AND THE INSTITUTION RESPONSIBLE FOR PREPARING THE REPORT..................................................................... 1
1.2.1 The Proponent ................................................................................................................................................. 1 1.2.2 Institution Responsible for Preparing the Document ....................................................................................... 1
1.3 RATIONALE FOR EIA STUDY ........................................................................................................................................ 2 1.4 OBJECTIVES OF THE EIA STUDY .................................................................................................................................... 2 1.5 SCOPE OF THE STUDY ................................................................................................................................................. 3 1.6 RELEVANCY OF THE STUDY .......................................................................................................................................... 3
2 CHAPTER II: PROJECT DESCRIPTION ...................................................................................................................... 4
2.1 ACCESSIBILITY .......................................................................................................................................................... 7 2.2 SALIENT FEATURES .................................................................................................................................................... 8
2.2.1 Descriptions of Key Project Structures ........................................................................................................... 17 2.2.1.1 Headworks Arrangement ...................................................................................................................................... 18 2.2.1.2 Under sluice .......................................................................................................................................................... 19 2.2.1.3 Intake .................................................................................................................................................................... 19 2.2.1.4 Gravel trap and gravel flushing structures ............................................................................................................ 19 2.2.1.5 Approach canal ...................................................................................................................................................... 19 2.2.1.6 Settling Basin ......................................................................................................................................................... 20 2.2.1.7 Water Conveyance System .................................................................................................................................... 20 2.2.1.8 Headrace Pipe ....................................................................................................................................................... 21 2.2.1.9 Surge Tank ............................................................................................................................................................. 21 2.2.1.10 Steel Penstock Pipe ............................................................................................................................................... 22 2.2.1.11 Powerhouse and Tailrace Canal ............................................................................................................................ 23 2.2.1.12 Power and Energy ................................................................................................................................................. 23
2.3 PROJECT REQUIREMENTS.......................................................................................................................................... 24 2.3.1 Main Access Road .......................................................................................................................................... 24 2.3.2 Internal Access Road ...................................................................................................................................... 24 2.3.3 Land Requirements ........................................................................................................................................ 27 2.3.4 Construction and Labor Camp ....................................................................................................................... 27 2.3.5 Spoil Disposal ................................................................................................................................................. 30 2.3.6 Quarries and Borrow Areas ........................................................................................................................... 31 2.3.7 Construction Method ..................................................................................................................................... 32 2.3.8 Batching Plant and Aggregate Crushing and Washing Plant [coordinates] .................................................. 33 2.3.9 Perishable Material Storage Sites .................................................................................................................. 33 2.3.10 Storage sites for Rocks, Aggregates and Sand .......................................................................................... 33 2.3.11 Construction Human Resource .................................................................................................................. 34 2.3.12 Construction Power ................................................................................................................................... 34 2.3.13 Construction Equipment ............................................................................................................................ 35 2.3.14 Project Estimated Costs ............................................................................................................................. 35 2.3.15 Construction Schedule ............................................................................................................................... 35 2.3.16 Construction Planning ............................................................................................................................... 36
3 CHAPTER III: STUDY METHODOLOGY .................................................................................................................. 38
3.1 EIA STUDY METHODOLOGY ...................................................................................................................................... 38 3.1.1 Project Impact Area Delineation .................................................................................................................... 38 3.1.2 Desk Study and Literature Review ................................................................................................................. 40 3.1.3 Field Study ..................................................................................................................................................... 40
3.1.3.1 Physical Environment ............................................................................................................................................ 40 3.1.3.2 Biological Environment ......................................................................................................................................... 40 3.1.3.3 Socio-economic Environment ............................................................................................................................... 42 3.1.3.4 Cultural Environment ............................................................................................................................................ 42
3.1.4 Baseline and Impact Analysis ........................................................................................................................ 42
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC iv
3.1.4.1 Physical Environment ............................................................................................................................................ 42 3.1.4.2 Biological Environment ......................................................................................................................................... 43 3.1.4.3 Socio-economic Environment ............................................................................................................................... 44 3.1.4.4 Cultural Environment ............................................................................................................................................ 45 3.1.4.5 Impact Assessment................................................................................................................................................ 45
3.1.5 Public Consultation/Public Hearing and Information Disclosure ................................................................... 46
4 CHAPTER IV: DESCRIPTION OF THE EXISTING ENVIRONMENT ............................................................................. 48
4.1 PHYSICAL ENVIRONMENT ......................................................................................................................................... 48 4.1.1 Physiography and Topography ...................................................................................................................... 48 4.1.2 Geology and Soil ............................................................................................................................................ 48 4.1.3 Seismicity ....................................................................................................................................................... 53 4.1.4 Climate ........................................................................................................................................................... 55 4.1.5 Drainage and Hydrology ................................................................................................................................ 58 4.1.6 Sedimentation and Erosion ............................................................................................................................ 65 4.1.7 Glacial Lakes and Glacial Lake Outburst Floods (GLOFs) ............................................................................... 66 4.1.8 Water Quality, Air Quality, and Noise Levels ................................................................................................. 66
4.2 BIOLOGICAL ENVIRONMENTS..................................................................................................................................... 68 4.2.1 Conservation Area ......................................................................................................................................... 68 4.2.2 Vegetation and Forest ................................................................................................................................... 70 4.2.3 Wildlife, Amphibian and Reptiles (herpetofauna) ......................................................................................... 79
4.3 SOCIO-ECONOMIC AND CULTURAL ENVIRONMENT ........................................................................................................ 83 4.3.1 Water Uses and Rights .................................................................................................................................. 95
5 CHAPTER V: ALTERNATIVE ANALYSIS .................................................................................................................. 97
5.1 ALTERNATIVE ENERGY PROJECTS ................................................................................................................................ 97 5.2 HYDROPOWER ENERGY ALTERNATIVES ...................................................................................................................... 100 5.3 PROJECT BEYOND CONSERVATION AREA ................................................................................................................... 101 5.4 STUDY OF ALTERNATIVES ........................................................................................................................................ 101
5.4.1 Alternatives Project Layouts ........................................................................................................................ 101 5.4.2 Access Road Alternatives ............................................................................................................................. 101 5.4.3 No Project Alternative ................................................................................................................................. 101 5.4.4 Project Structure .......................................................................................................................................... 102 5.4.5 No/Less Forest Alternative........................................................................................................................... 105
5.5 TIME AND SCHEDULE ............................................................................................................................................. 105
6 CHAPTER VI: ENVIRONMENTAL IMPACTS ......................................................................................................... 106
6.1 BENEFICIAL IMPACTS .............................................................................................................................................. 106 6.1.1 Construction Phase ....................................................................................................................................... 106
6.1.1.1 Income generation and employment opportunity ................................................................................................. 106 6.1.1.2 Skill Development ................................................................................................................................................ 106 6.1.1.3 Increase in local business ...................................................................................................................................... 107 6.1.1.4 Increase in land value ........................................................................................................................................... 107 6.1.1.5 Community Support Program ............................................................................................................................. 107 6.1.1.6 Provision of share to local people ....................................................................................................................... 109
6.1.2 Operation Phase ........................................................................................................................................... 109 6.1.2.1 Employment opportunity ..................................................................................................................................... 109 6.1.2.2 Generation of Royalty ............................................................................................................................................ 109 6.1.2.3 Enhancement of National expertise, skills and transfer of technology ...................................................................... 109 6.1.2.4 Enhancement of National supply............................................................................................................................ 110 6.1.2.5 Enhancement of Local area development ............................................................................................................... 110
6.2 ADVERSE IMPACTS ................................................................................................................................................ 113 6.2.1 Physical and Chemical Environment .............................................................................................................. 113
6.2.1.1 Construction phase ............................................................................................................................................... 113 6.2.2 Biological Environment ................................................................................................................................ 117
6.3 SCIO-ECONOMIC AND CULTURAL ENVIRONMENT ........................................................................................................... 120 6.3.1 Construction Phase ....................................................................................................................................... 120
6.3.1.1 Loss of private land ............................................................................................................................................... 120 6.3.1.2 Loss of Agricultural productivity and standing crops .......................................................................................... 121 6.3.1.3 Land loss of Project affected families (PAFs) ....................................................................................................... 121 6.3.1.4 Occupational health and safety ........................................................................................................................... 121 6.3.1.5 Pressure on Public utilities .................................................................................................................................. 121
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC v
6.3.1.6 Social conflict due to influx of work force ........................................................................................................... 121 6.3.1.7 Health and Sanitation .......................................................................................................................................... 121 6.3.1.8 Increment on Goods price ................................................................................................................................... 122 6.3.1.9 Increase in women’s and children’s workload .................................................................................................... 122 6.3.1.10 Gender Biasness .................................................................................................................................................. 122 6.3.1.11 Increase in anti-social activities ........................................................................................................................... 122 6.3.1.12 Impact on existing water use right ...................................................................................................................... 122
6.3.2 Operation Phase ........................................................................................................................................... 122 6.3.2.1 Withdrawal of economic activities ...................................................................................................................... 122 6.3.2.2 Impact due to sudden release of water in to downstream ................................................................................. 123 6.3.2.3 Impact on cremation site due to reduced water flow ......................................................................................... 123 6.3.2.4 Burden to the women ......................................................................................................................................... 123 6.3.2.5 Risks of Accident to the Local people .................................................................................................................. 123
7 CHAPTER VII: ENVIRONMENTAL MITIGATION AND ENHANCEMENT ................................................................. 129
8 CHAPTER VIII: ENVIRONMENTAL AND SOCIAL MANAGEMENT PLAN ................................................................ 163
8.1.1 Level 1 EMP.................................................................................................................................................. 175 8.1.1.1 Environmental/Social Mitigation Management Framework ............................................................................... 175 8.1.1.2 Environmental and Social Monitoring Management Framework ....................................................................... 176 8.1.1.3 Supervision Framework ....................................................................................................................................... 190 8.1.1.4 Environmental Audit Framework ........................................................................................................................ 192
8.1.2 Construction Phase ...................................................................................................................................... 192 8.1.3 Operation Phase .......................................................................................................................................... 192
8.1.3.1 Record Keeping and Reporting ............................................................................................................................ 193 8.1.4 Issue Based Management Plans (IBMP) ...................................................................................................... 194 8.1.5 Site Specific Management Plans (SSMP) ..................................................................................................... 197 8.1.6 Social Action Plan ........................................................................................................................................ 198
8.2 GRIEVANCE REDRESS ............................................................................................................................................. 198 8.3 CAPACITY BUILDING AND TRAINING .......................................................................................................................... 201
8.3.1 Project Management and ESSD ................................................................................................................... 201 8.3.2 Contractors (CC) and Other Contractors (OC) .............................................................................................. 202
8.4 ESMP MONITORING REVIEW ................................................................................................................................. 202 8.4.1 Review of the ESMP ..................................................................................................................................... 202 8.4.2 Control and Update of the EMP ................................................................................................................... 203
8.5 ADDITIONAL INFORMATION FOR ESMP..................................................................................................................... 203 8.5.1 Additional Baseline Monitoring ................................................................................................................... 204 8.5.2 Other Additional Studies .............................................................................................................................. 204 8.5.3 Official Field Verification of the Affected Land Plots and Affected Households .......................................... 204 8.5.4 Cumulative Impact Assessment ................................................................................................................... 204
8.6 ESMP IMPLEMENTATION PLAN SCHEDULE ................................................................................................................ 205
9 CHAPTER IX: ENVIRONMENTAL POLICIES, GUIDELINES AND LEGISLATIONS ...................................................... 209
10 CHAPTER X: PROJECT BENEFIT AND COSTS ........................................................................................................ 224
10.1 PROJECT COST ...................................................................................................................................................... 224 10.2 PROJECT BENEFIT .................................................................................................................................................. 224
10.2.1 Direct Revenue Generation ..................................................................................................................... 224 10.2.2 Local Government’s Benefit from the Hydropower Revenue Sharing ..................................................... 224 10.2.3 Other Local Area Benefits ........................................................................................................................ 224
10.3 PROJECT LOSSES ................................................................................................................................................... 225 10.4 ENVIRONMENTAL MITIGATION, MONITORING, AUDIT AND ENVIRONMENTAL ENHANCEMENT COSTS. ................................... 225
11 CHAPTER XI: CONCLUSION ................................................................................................................................ 227
12 REFERENCES ...................................................................................................................................................... 228
LIST OF FIGURES
Figure 2-1 Project Site with Machhapuchre Rural Municipality Area (Source: site visit 2019) ............ 4
Figure 2-2 The project area (source: field visit 2019 Department of Survey and MoFALD) ................. 5
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC vi
Figure 2-3 Access Road to the Project site (field survey 2019) ............................................................. 7
Figure 2-4 Google map of the accessibility (source: Google map 2019) ............................................... 7
Figure 2-5 Site for Head work near Bharabhari (source: field visit 2019) ........................................... 18
Figure 2-6 Site of Weir Area (field survey 2017) ................................................................................. 18
Figure 2-7 Settling Basin Area (source: site visit 2017) ....................................................................... 20
Figure 2-8 One of the site for Headrace Pipe near Sardi Khola (source: site visit 2019) .................... 21
Figure 2-9 Site for Primary Surge Tank (field survey 2019) ................................................................. 22
Figure 2-10 Site for the power house and tailrace (field survey) ........................................................ 23
Figure 2-11 Main road Bhurjung Khola (Site visit) ............................................................................... 24
Figure 2-12 Proposed Construction Camp area in Bhurjung Khola (source: site visit) ....................... 27
Figure 2-13 Project Support failities (source: Goggle Earth 2019) ...................................................... 30
Figure 2-14 Existing Quarry site in right bank of Seti Nadi near the power house (source: site visit
2019) .................................................................................................................................................... 31
Figure 3-1 DIA and IIA of the Project (source: Field visit 2017) ........................................................... 38
Figure 4-1 Physiography of Nepal (DIVA GIS and Department of Survey ) ......................................... 48
Figure 4-2 Geological Map of Nepal (Source: Department of Mines and Geology, Nepal) ................ 49
Figure 4-3 Geological Map (map not on scale) of the Project area showing major rock discontinuities
(after DMG) .......................................................................................................................................... 51
Figure 4-4 Seti nadi at Headworks area (source: site visit) ................................................................. 52
Figure 4-5 Epicenter Map of Nepal (source: National Seismological Center, Nepal).......................... 54
Figure 4-6 Sesmic Hazard Map of Nepal (source: National Seismological Center, Nepal).................. 54
Figure 4-7 Rainfall during the site visit ................................................................................................ 55
Figure 4-8 Distribution of Rainfall stations in the basin (Updated Feasibility Report 2019)............... 58
Figure 4-9 Seti Nadi near Tatopani (field survey 2019) ....................................................................... 59
Figure 4-10 Catchment Area of Seti Nadi at Headworks Location (source: Updated Feasibility Study
Report and Department of Survey) ..................................................................................................... 60
Figure 4-11 Flow Duration Curve plot for adopted design discharge (at Q44.85) at Intake of Seti Nadi
HPP (Source: Updated Feasibility Report 2019) .................................................................................. 63
Figure 4-12 Land Slide near Tatopani (site visit 2019) ........................................................................ 65
Figure 4-13 Protected Areas of Nepal (source: Department of Survey, DNPWC, MoFSC) ................. 68
Figure 4-14 Annapurna Conservation Area and Project Site, (source: Department of Survey, DNPWC,
MoFSC) ................................................................................................................................................. 69
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC vii
Figure 4-15 ACA office at Lewang (photo top left), team with ACA staff and Check point of the ACAP
in Bhujung Khola (field survey). ........................................................................................................... 70
Figure 4-16 Ecological zone of Nepal (Lillesø et al. 2005) ................................................................... 71
Figure 4-17 Vegetation and Settlement in the Sardi Khola ( field visit) .............................................. 75
Figure 4-18 Pine forest just before Tatopani (field survey) ................................................................. 77
Figure 4-19 Some of the selected plants ( field visit) .......................................................................... 77
Figure 4-20 Some vegetables (field survey) ........................................................................................ 78
Figure 4-21 Some fauna (field study) .................................................................................................. 82
Figure 4-22 Fishes from the Seti Nadi (field survey) ........................................................................... 83
Figure 4-23 Land use types in Machhapuchre Rural Municpality (source: site visit) .......................... 84
Figure 4-24 View of Macchapurcre Rural Municipality from Sarangkot, Pokhara (source: site visit) 84
Figure 4-25 Local Residants of Macchapuchre Rural Municipality (source: site visit) ........................ 85
Figure 4-26 Religious sites (source: site visit) ...................................................................................... 86
Figure 4-27 Schools in Sardi Khola and Machhapuchre VDCs field survey ......................................... 90
Figure 4-28 Farming and Agriculture (field survey 2019) .................................................................... 90
Figure 4-29 Irrigation canal passing from Sardi Khola to Puranchor (field survey 2019) .................... 91
Figure 4-30 Woman working at home to dry crop (field survey 2019) ............................................... 93
Figure 4-31 Man fishing at Sardi Khola (field survey 2019) ................................................................. 93
Figure 4-32 Man preparing DOKO with Nigalo (field survey) .............................................................. 94
Figure 4-33 Health Post near Bhurjung Nadi village (source: field visit 2017) .................................... 94
Figure 4-34 Tatopani near the project area (Tatopani) (source: field visit 2019) .............................. 95
Figure 4-35 Water uses as Irrigation Canal of Puranchour and Fishing at Sardi Khola (source: site
visit) ...................................................................................................................................................... 96
Figure 4-36 Salte making small factory at Bhurjung Nadi followed by Saw Mill (source: site visit) ... 96
Figure 5-1 Topo map of project (Updated feasibility report 2019) ................................................... 104
LIST OF TABLES
Table 1.1 Experts Involved in the EIA Study of Seti Nadi Hydroelectric Project ................................... 2
Table 2.1 Camps and Tentative areas .................................................................................................. 27
Table 2.2 Land Requirement ................................................................................................................ 28
Table 2.3 Site of Stock pile ................................................................................................................... 33
Table 3.1 Details of the project sites and surroundings ...................................................................... 39
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC viii
Table 4.1 Information of Precipitation Stations around Project Basin................................................ 56
Table 4.2 Average Precipitation by different methods ....................................................................... 57
Table 4.3 Gauging Stations Nearby the Project ................................................................................... 59
Table 4.4 Mean Monthly Discharge of Seti River at Ghachowk(Station No:427) .............................. 60
Table 4.5 Mean Monthly Discharge at Intake Site from different Methods ....................................... 61
Table 4.6 Adopted Mean Monthly Flow (m3/s) at Intake Site in BS ................................................... 62
Table 4.7 Time Exceedance of Flows at Intake site ............................................................................. 62
Table 4.8 Summary of flood (m3/s) analysis for intake ...................................................................... 64
Table 4.9 Summary of flood (m3/s) for powerhouse .......................................................................... 64
Table 4.10 Estimated Floods for River Diversion ................................................................................. 64
Table 4.11 Air Quality Monitoring ....................................................................................................... 67
Table 4.12 List of Trees in Different Project Components .................................................................. 71
Table 4.13 List of the Herbs common to Powerhouse and Headworks area ...................................... 76
Table 4.14 List of Shrubs common to the Powerhoise and Headworks area ..................................... 76
Table 4.15 Mammals in the Project Area ............................................................................................ 80
Table 4.16 Land Use Pattern in Kaski District ...................................................................................... 83
Table 4.17 Households, population and average household size. ..................................................... 86
Table 4.18 Population aged 5 years and above by literacy status and sex ......................................... 87
Table 4.19 Ethnic condition in the former VDCs ................................................................................. 88
Table 4.20 List of School ...................................................................................................................... 89
Table 4.21 Households by usual source of lighting ............................................................................. 92
Table 4.22 Households by source of drinking water ........................................................................... 92
Table 5.1 Advantages and Disadvantages of Different Technical Power Plant Alternatives in the
Context of Nepal .................................................................................................................................. 97
Table 5.2 Comparison of Alternative Surge Tank ............................................................................. 105
Table 6.1 Community Support Program ............................................................................................ 108
Table 6.2 Impact Matrix ..................................................................................................................... 111
Table 6.3 Forest Loss Due to the Implementation of Project............................................................ 117
Table 6.4 Forest Trees/Poles Due to the Implementation of Project ............................................... 117
Table 6.5 Impact matrix ..................................................................................................................... 124
Table 7.1 Environment Flow .............................................................................................................. 138
Table 7.2 Environmental Enhancement and Mitigation Measures Matrix ....................................... 144
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC ix
LIST OF FIGURES
ANNEXES
Annex 1 Pictorial Highlights
Annex 2 License, EIA Permission
Annex 3 Public Hearing
Annex 4 Water Quality Reports
Annex 5 Recommendations
Annex 6 Forest Loss and Vegetation
Annex 7 List of People for Land Acquisition
Approved ToR
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC x
sfo{sf/L ;f/f+z !=) cfof]hgfsf] k|:tfjs lehg n'lDjgL ln= o; ;]tL gbL hnljB't cfof]hgf -@% d]=jf=_sf] k|:tfjs xf] . k|:tfjssf] 7]ufgf lgDg adf]lhd /x]sf] 5 . lehg n'lDjgL ln= j'6jn, ?kGb]xL, g]kfn kmf]g g+M )&!–%%)^$) O{ d]n: [email protected] cfof]hgfsf] ;+lIfKt ljj/0f u08sL k|b]zsf] sf:sL lhNnf df5fk'R5«] ufpFkflnsf eO{ axg] ;]tL gbLdf df5fk'R5«] ufpFkflnsf j8f g+ @ sf] e/fe/Ldf ;fdfGo afFw (Weir) lgdf{0f u/L ;f]xL lhNnfsf] ;f]xL ufpFkflnsfdf ljB't u[x /xg] u/L ;]tL gbL hnljB't cfof]hgf k|:tfj ul/Psf] 5. of] cfof]hgf æ/g ckm b l/e/Æ k|s[ltsf] xf] h;sf] hl8t Ifdtf @% d]=jf /xg]5 eg] aflif{s pmhf{ !$%=^^ luufjf6 306f /xg]5 . of] cfof]hgfsf] cjl:ylt @*) !*’ $)” b]vL @*) @@’ !@” pQ/L cIff+; / *#) %&’ !%” b]vL *#) %*’ #)” k:jL{ b]zfGt/ ljr /x]sf] 5 . o; cfof]hgsf ;Dk"0f{ ;+/rgfx? gbLsf] afofF t6df /xg]5g\ . o; cfof]hgfsf] ;fdfGo afFw (Weir) sf:sL lhNnf df5fk'R5«] ufpFkflnsf j8f g+ @ eO{ axg] ;]tL gbLtk{m nueu #* ld6/ nfdf] / ;d'Gb| ;tx b]lv !@*! ld6/ prfO{df #* ld6/ nfdf] /xg]5 . ;]tL gbLsf] kfgL s/La ^@)& ld6/ nfdf] x]8/]; kfOk dfk{mt ;d'Gb| ;tx b]lv !)() ld6/ prfO{df df5fk'R5«] ufpFkflnsf j8f g+ @ df /xg] ljB't u[xdf nlug] 5 . ljB'tu[xaf6 lg:s]sf] kfgLnfO{ k'gM;]tL gbLdf ld;fOg] 5 . cfof]hgfsf d'Vo ;+/rgfx?df ;fdfGo afFw (Weir), jfn'jf lyu|ofpg] kf]v/L, kfgL k|jfx ug]{ x ]8/]; kfOk, k]g:6s kfOk, ljB't u[x / kfgL lgsf; ug]{ s'nf] /xg]5g . cfof]hgfsf] cGo ;xfos ;+/rgfdf kx'r dfu{ ,sd{rf/L cfjfz, 9'+uf, lu6\6L afn"jf ;ªsng ug]{ 7fpF, lgdf{0f ;fdfu|L e08f/0f ug]{ 7fpF, df6f] y'kfg]{ 7fpF, e08f/0f :yn /xg]5g\ . of] cfof]hgfsf] u|; x]8 !*&=% dL / g]6 x]8 !^%=#% dL /xg]5 . @=) gLlt tyf sfg'gL k|fjwfg jftfj/0f ;+/If0f lgodfjnL @)%$ sf] cg';"rL–@, sf] lgod cM -#_ adf]lhd s'g} k|:tfj /fli6«o lgs'~h, jGohGt' cf/If, ;Ld;f/ / ;+/If0f If]qdf sfof{Gjog ug'{ kg]{ ePdf jftfj/0fLo k|efj d"Nof+sg ug'{kg]{ x'G5 . k|:tfljt ;]tL gbL hnljB't cfof]hgf -@% d]=jf=_ cGgk'0f{ ;+/If0f If]qdf kb{5, ;f]xL cg'?k k|:tfljt cfof]hgfsf] jftfj/0fLo k|efj d"Nof+sg k|ltj]bg t}of/ ug{'kb{5 . g]kfn ;/sf/n] hf/L u/]sf] jftfj/0f ;+/If0f lgodfjnL @)%$ sf] k|fjwfg cg'?k cfof]hgf lgdf{0f ug' { cufj} jftfj/0fLo k|efj d"Nofs+g k|ltj]bg :jLs[t ug'{kb{5 . g]kfn ;/sf/n] hf/L u/]sf] jftfj/0fLo sfg'gsf cnfjf ljleGg If]q, cGt/-If]qLo sfg'g, dfkb08 tyf u'0f:t/x? klg cfof]hgf ljsf;df cfslif{t x'G5g\ ;fy} g]kfn ;/sf/n] x:tfIf/ u/]sf] cGt//fli6«o ;lGw tyf ;Demf}tfx? klg cfslif{t x'G5g\ . of] jftfj/0fLo k|efj d"Nofs+g k|ltj]bgn] dfly pNn]lvt gLlt, sfg'g, dfkb08 tyf u'0f:t/x?sf] k"0f{ ?kdf kfngf u/]sf] 5 . #=) cWoogsf] d'Vo pB]Zo o; jftfj/0fLo k|efj d"NofÍg k|ltj]bgsf] d'Vo p2]Zo o; cfof]hgfn] jftfj/0fdf kfg{ ;Sg] gsf/fTds / ;sf/fTds c;/x?sf] klxrfg u/L gsf/fTds c;/x?sf] Go'lgs/0f / ;sf/fTds c;/x?nfO{ k|f]T;fxg ug{sf] nflu cfjZos ;'emfj k|bfg ug'{ /xsf] 5 .
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC xi
$=) ljsNk ljZn]if0f k|:tfljt cfof]hgf lg0f{o lng' cufj} jftfj/0fLo tyf ;fdflhs ;'/Iffsf] b[li6sf]0faf6 ljleGg pknAw ljsNkx?sf] ljZn]if0f ul/Psf] lyof] . jftfj/0fLo cWoogsf] lznlznfdf cfof]hgf l:yltsf] ljsNk, l8hfO{g, k|fljlws kIf, lgdf{0f tl/sf, lgdf{0f ;do, lgdf{0f ;fdu|L, jftfj/0fLo Joj:yfkg, sd jgh+unsf] pkof]u, cfof]hgfjf6 kg{ ;Sg] vt/f tyf c;/x?sf] ;d]t j}slNks ljZn]if0f ul/Psf] lyof] . pknAw ljleGg pkfox?sf] ljZn]if0f u/L cfof]hgfsf] ;+/rgfx? agfOFbf jftfj/0fLo ;'/Iffsf] b[li6sf]0fdf sd;]sd yf/} h+un If]qsf] 5fF6sfF6 tyf e"Ifo / e":vngsf] sd hf]lvd ePsf] If]qnfO{ pRrtd ljsNksf] ?kdf /x]sf] kfO{of]. %=) jftfj/0fLo k|efj o; cfof]hgf If]q g]kfnsf] kxf8L If]qdf kb{5 . pQm cfof]hgfsf] afFw gbLdf / kfj/xfp; gbL lsgf/df /xg] 5 . o; If]qsf] glhs} /x]sf] kxf8 ljz]ift lkmnfO{6 tyf Sjfhf{O{6 h:tf vlghn] ag]sf] 5 . kfj/xfp; If]qdf Pn'lePn df6f] /x]sf] 5 anf}6] df6f]sf] ?kdf /x]sf] 5 . k|:tfljt cfof]hgf pkf]i0f xfjfkfgL kfO{g] If]qdf kb{5 . o; If]qdf cf};t clwstd tfkqmd dlxgfdf -##) ;]=_ / cf};t Go"gtd tfkqmd hgj/L dlxgfdf -#) ;]=_ /]s8{ ul/Psf] 5 . e' pkof]u sf] cfwf/df h+unL If]q, afemf] hldg, s[lif of]Uo hldg tyf jl:tx? kfO{Psf 5g\ . o; If]qdf pkf]i0f k|sf/sf] h+un kfO{G5 . jg:kltdf lrnfpg], lv/f]{, lgufnf], plQ;, ;Nnf /x]sf 5g . cfof]hgf :yn j/k/ kfO{g] jGohGt'x?df :tgwf/L, r/fx?, df5f 5g . cfof]hgfsf] lgdf{0f tyf ;+rfng cjlwnfO{ v/f] ?kdf ljBdfg jftfj/0fLo l:ylt tyf cfof]hgfsf] lj:t[t gd'gf cWoog u/L jftfj/0fLo tyf ;fdflhs k|efjx?sf] klxrfg tyf k"jf{g'dfg ul/g] 5. cfof]hgfsf] k|ToIf k|efljt If]qdf lgdf{0fsf s|ddf x'g] k|efjx?df e"–pkof]u kl/jt{g, e"Ifo tyf e"–l:y/tfsf] hf]lvd / lgdf{0f s|ddf x'g] WjgL k|b"if0f /x]sf 5g\. ;+rfng cjlwdf eg] ;'Vvf If]qdf x'g] gbLsf] jxfj kl/jt{g tyf gbLsf] :j?k kl/jt{g d'Vo rf;f]sf] ljifo /x]sf 5g\\. cfof]hgf lgdf{0f r/0fdf kg{ ;Sg] /f;folgs k|efjx?df yf]/}} ;dosf nflu xfjf tyf hn k|b"if0fx? x'g\ h'g Go"g b]lv dWood dxTjsf /x]sf 5g\ . cfof]hgf :yn gfh's tyf hf]lvdo'Qm h}ljs jftfj/0f eGbf aflx/ /x]sf] 5 . cfof]hgfsf ;+/rgfx?n] *=^@ x]S6/ h+unnfO{ c;/ kfg]{ b]lvG5 . cfof]hgf lgdf{0f ubf{ @#=@^ x]S6/ e"–pkof]u ePsf hldgsf] cfj:ostf kg]{ b]lvG5 ((=#! x]S6/ lglh / !#=(% cGgk'0f{ ;+/If0f If]qsf] hldg) . cfof]hgfsf] k|efljt If]qdf ljleGg jg:klt tyf jGohGtsf k|hfltx? /x]sf 5g\ . jg If]q Iflt, jGohGt' tyf ltgsf jf;:yfgdf x'g] k|efj /x]sf] b]lvG5. lgdf{0f cjlwdf afx\o sfdbf/x?sf] cfudgn] ubf{ u}/sfg'gL tj/af6 ?v s6fg, jGohGt'sf] l;sf/ cflb d'Vo jftfj/0fLo ;'/Iffsf] rf;f]sf] ljifo /x]sf] b]lvG5 . ;fdflhs ;'/Iffsf] b[li6sf]0faf6 cfof]hgfn] dflg;sf] cfly{s tyf ef}lts :yfgfGt/ x'g] b]lvb}g . cfof]hgf lgdf{0f cjlwdf d'Vo rf;f]sf] ljifo eg]sf] k]zfut :jf:Yy tyf ;'/Iffdf c;/, b}lgs pkef]Uo j:t'dfly rfk, ;dfhdf j9g ;Sg] c;dflhs ljs[lt, :jf:Yy tyf ;/;kmfO{df c;/ /x]sf 5g\.
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC xii
^=) jftfj/0fLo k|efj Go"lgs/0f tyf clea[l4s/0fsf pkfox? cg'dflgt jftfj/0fLo k|efjx?nfO[{ ;se/ TofUg]], sd ug]{ tyf Ifltk"tL{nfO{ d'cfAhf lbg] ta/df qmda4 tl/sfn] /flvg]] 5 . kl/of]hgf l8hfO{g ubf{ ;+efljt pkfox?nfO{ ;dfj]z ul/g] 5 . tL pkfox?df kl/of]hgfsf ;+/rgf tyf ;xfos ;+/rgf, kl/of]hgf kx'Fr ;8s lgdf{0f ubf{ ?v s6fg / ;+efljt e"–:vng hf]lvd If]qnfO{ ;se/ TofUg] /x]sf 5g\ . ;Dk"0f{ ;dfwfg ;+jf]wg ug{ g;lsg] k|efjx?nfO{ Go"gLs/0f ug{ Ifltk"lt{sf] Joj:yf ul/Psf] 5 . ef}lts tyf /f;folgs jftfj/0fsf] ;'/Iff ug{ tyf k|efj Go"gLs/0f ug{ tn pNn]lvt pkfox? cjnDag ul/g] 5 . 9'‹f, lu§L tyf afn'jf pTvgg \ ubf{ k|fs[lts e'jgf]6 sfod ul/g] 5 ;fy} qm;/ tyf a]lrª
KnfG6 k|d'v jl:taf6 6f9f /flvg] 5 .
kx'Fr ;8s lsgf/fdf 8«]gx? lgdf{0f ul/g] 5g . pTvgg If]q tyf kmf]xf]/ y'kfl/Psf] If]qnfO{ e"–:vng af6 ;+/If0f ug{ l;len sfo{ tyf h}jLs
k|ljlwsf] ljsf; ug]{ .
oftfoft tyf pks/0fx?sf] lgoldt /]vb]v ug]{ . w'nf] p8\g] 7fpFdf kfgL 5s{g]. lgdf{0fdf k|of]u x'g] /;fognfO{ plrt 7fFpdf Joj:yf ug]{ . lgdf{0f SofDkdf 7f]; tyf t/n kmf]xf]/nfO{ Joj:yfkg ug]{ . k]6«f]lnod kbfy{sf] r'xfj6nfO{ Joj:yfkg ug]{ . sfdbf/x?sf nflu k]zfut ;'/Iffsf pks/0fx? h:t} x]Nd]6, df:s, a'6 cflb k|bfg ul/g] 5 . lgdf{0f ;fdu|Lx? lglZrt 7fpFdf 9fs]/ /flvg] 5g\. kmf]xf]/d}nfsf] plrt Aoj:yfkg ul/g] 5 . h}ljs jftfj/0f ;'/Iffsf nflu k|efj sd ug{ lgDg pkfox?sf] cjnDag ul/g]5 . ?v s6fg k"j{ ;+s]t tyf ;+Vof olsg ug]{ . ! ?vsf] ;§fdf @% j6f lj?jf /f]k0f ul/g] 5 . To:tf] sfo{ ubf{ % jif{ ;Ddsf] a]gf{ nufpg],
Joj:yfkg ug]{ vr{ Joxf]l/g] 5 .
bfp/fsf] ;§f a}slNks phf{ h:t} dl§t]n, Uof; cflb k|of]u ug]{ . lgdf{0f sfdbf/x?nfO{ h+undf l5/L ?v sf6\g tyf jGohGt' l;sf/ ug{ /f]s nufpg] . /ftsf] ;dodf WjgL pT;h{g x'g] sfd aGb ug]{ . ;fdflhs jftfj/0f
k|efljt df5fk'R5«] ufpFkflnsfsf] ;fdflhs tyf cfly{s l:ylt clea[l4sf nflu lgDg pNn]lvt pkfox? cjnDag ul/g] 5 . :yfgLonfO{ /f]huf/sf] cj;/ . :yfgLo z}lIfs tyf :jf:Yo ;+:yfnfO{ ;xof]u . lhljsf]kfh{gsf nflu Ifdtf clea[l4 tflnd. dlxnf ljsf; sfo{s|d.
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC xiii
s[lif tyf afujfgL lj:tf/ sfo{qmd. clwu|x0f ugkg]{ hUuf tyf s[lif pkhsf] Ifltk'lt lbO{g] 5. sfdbf/x?sf nflu 5'§} vfg]kfgL tyf ;f}rfnosf] Aoj:yf ul/g] 5 . sfdbf/x?sf]nflu lglZrt lgod dfkb08 nfu' ul/g] 5 . ;Defljt b'3{6gfaf6 hf]lug k'j{ ;fjwflgsf pkfox? nfu' ul/g] 5g\ . &=) jftfj/0fLo Joj:yfkg of]hgf ;]tL gbL hnljB't cfof]hgfsf] jftfj/0fLo Joj:yfkg of]hgfn] cfof]hgfsf] jftfj/0fLo Joj:yfkgsf pkfox? tyf sfo{k4tLnfO{ kl/eflift ug{]5. cfof]hgfsf] jftfj/0fLo Joj:yfkg of]hgfn] kl/of]hgf ljsf; qmddf b]vfkg]{ ;fdflhs tyf jftfj/0fLo ;'/Iffsf d'4fx?nfO{ s;/L lgb{]lzt ug]{ eGg] s'/fnfO{ cfof]hgfsf] b[9tfnfO{ /flvg] 5. jftfj/0fLo Joj:yfkg of]hgfn] jftfj/0fLo Joj:yfkgsf] ;+u7lgs :j?k / ToxFf ;dfj]z x'g] ;/f]sf/jfnfx?sf] e"ldsf tyf bfloTjx?sf] plrt j0f{g ug{]5. jftfj/0fLo tyf ;fdflhs ;'/Iffsf pkfox?nfO{ ;do kl/lw leq cjnDagsf] ;'lglZrt ug{ plrt ;'kl/j]If0f, cg'udg tyf n]vffkl/Ifsf] nflu ;"rgf tyf clen]v k|0ffnLsf] ljsf; ul/g] 5. *=) cfof]hgf nfut tyf kmfO{bf k|:tfljt cfof]hgfaf6 /fHonfO{ k|ToIf ?kdf /fh:j :j?k ?= ! c/a, & s/f]8, ^@ nfv :j?k dxTjk"0f{ kmfO{bf k'Ug] b]lvG5 . ;fy ;fy} lgdf{0f tyf ;+rfng r/0fdf l;h{gf x'g] /f]huf/sf] cj;/ -bIf –*), cw{bIf – !)), cbIf –@@)_ tyf :yfgLo j:t'sf] laqmLaf6 k|ToIf ?kdf kmfO{bf k'Ug] b]lvG5 . cfof]hgfsf] lgdf{0f vr{ ?= $ c/a, ^& s/f]8, (# nfv cg'dflgt ul/Psf] 5 . cfof]hgfsf] k|lt d]=jf= vr{ ?= !*,&!,& #,$((_ cg'dflgt ul/Psf] 5 . cfof]hgfsf nflu jftfj/0fLo Go"gLs/0f, cg'udg tyf clea[l4s/0fsf] vr{ @$ s/f]8, ^! nfv 5'6\ofOPsf] 5 . cfof]hgfsf] lgdf{0f sfo{ #) dlxgfdf ;lsg] /x]sf] 5 .
(=) ;fd'bflos ;xof]u sfo{qmd cfof]hgfn] :yflgo ;d'bfosf] nflu ;fd'bflos ;xof]u sfo{qmd cGt{ut cof]hgfsf] s"n nfut dWo] )=&*Ü jh]6 vr{ ug]{5 . ;fd'bflos ;xof]u sfo{qmd cGt{ut cfof]hgfn] ljBdfg cj:yfdf /x]sf ;8sx?sf] :t/pGglt ug]{, k|efljt If]qsf ljBfnonfO{ ;xof]u ug]{ tyf h}ljs ljljwtf ;DalGw hgr]tgf d'ns tflnd k|bfg ug]{, lhljsf]kfh{gsf nflu Ifdtf clea[l4 tflnd, cfdf ;d'xsf] dlxnf ljsf; sfo{s|dnfO{ ;xof]u ug]{, s[lif tyf afujfgL lj:tf/ sfo{qmd, o'jf ;d'xsf] nflu Ifdtf clea[l4 tflnd h:tf sfo{qmdx? ;+rfng ul/g] 5 . !)=) lgisif{ ;]tL gbL hnljB't cfof]hgf 5f]6f] lgdf{0f cjlw tyf l;ldt ;~rfng cjlwsf c;/x?n] ubf{ jftfj/0fLo tyf ;fdflhs c;/x? klg l;ldt /x]sf 5g\ . cfof]hgfn] ubf{ :yfgLo ;d'bfo tyf /fli6«o :t/df k'Ug] kmfO{bfnfO{ dWogh/ ub}{ jftfj/0fLo cg'dtL lng cfj:os /x]sf] 5 . ;fy} cfof]hgfn] jftfj/0f k|efj d"NofÍsg k|ltj]bgdf pNn]v x'g] ;sf/fTds k|efjx?nfO{ a9f]Q/L ug]{ / gsf/fTds k|efjx?nfO{ Go"lgs/0f Pj+ lg/fs/0f ug]{ u/L jftfj/0f k|efj d"NofÍsg k|ltj]bg t}of/ u/L jftfj/0fLo k|efj d"Nof+sg k|ltj]bgdf pNN]fv eP jdf]lhd lgdf{0f tyf ;+rfng r/0fdf k|:tfljt sfo{x?sf] kfngf ug]{5 .
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC xiv
EXECUTIVE SUMMARY
1.0 Proponent of The Project
The proponent of the proposed project Seti Nadi Hydroelectric (SNHEP) is Vision Lumbini Ltd. The
address of the proponent is as under:
Vision Lumbini Ltd.
Butwal-8, Gurudwara Path
Rupandehi, Nepal
Phone: (977-071) 544316; 549494
Email: [email protected]
Brief Description of the Project
The project is located in Machhapuhre Rural Municipality ward 2 of Kaski District of Gandaki
Pradesh. The Weir is located at Machhapuchre Rural Municipality ward 2, Bharabhari while the
powerhouse is located in the same rural municipality. The project is a run-off river scheme which is
located at about middle stretch of Seti Nadi. Seti Nadi originates from Annapurna Himalayan Range.
The Seti Nadi is one of the major tributary of Sapta Gandaki River. The project is located at about 20
km NW of Lamachor (Pokhara). The Project area covers the longitudes from 83 0 57'15” E to 83 0 58’30” E and latitudes from 28 0 18’40” N to 28 0 22’12” N. Weir site is located at Near Bharabhari village (Machhapuchre Rural Municipality Ward 2) on the left bank and Misra Village
(Machhapuchre Rural Municipality Ward 2) on the right bank. About 6300 m long Pipeline
Alignment (HPA) was designed to pass through the left bank hill slope of the Seti Nadi. The Pipeline
alignment was passed through various terrains, streams and gullies (wet to dry). It will generate Dry
Season Energy: 45.48 GWh, Wet Season energy: 100.18 GWh and Total Energy: 145.66 GWh.
2.0 Legislative Framework
Seti Nadi Hydroelectric Project (SNHEP) lies in Annapurna Conservation Area, therefore, EIA
report need to be prepared for this project. The environmental screening criteria enshrined in the
Environment Protection Regulation 1997 of the Government of Nepal (GoN) mandates
Environmental Impact Assessment studies for the project development approval. Apart from GoN
umbrella environmental legislations, a number of GoN sectorial and cross-sectorial policies, legislations, guidelines and standards are attracted for the project development apart from the
commitments of the GoN pertaining to international conventions and treaties. This EIA report is
prepared in compliance to the above policies, legislations, guidelines, and standards.
3.0 Main Objectives of the Study
The main objective of this Environmental Impact Assessment study is to identify negative impacts as
well as beneficial impacts. It will also propose the measures to reduce the negative impacts and
suggest the measures to enhance the beneficial impacts.
4.0 Alternative Analysis
The proposed project is analyzed from environmental and social safeguard perspectives from among
the various alternatives available. Among various energy alternatives to supplement of energy
requirements, hydroelectricity based on the available water resources is evaluated as the best. For the
construction of the project structures and facilities, the option minimizing forest land clearance and
low risk of erosion and land instability is selected as the best option from the environmental
safeguard perspective. The areas for the construction of project structures has been selected based on
low risk situation of the sites.
5.0 Environmental Impacts
The key physical environmental impacts related to project in the Direct Impact Zone during the
construction period is the land use change and the risk of land erosion and land instability apart from
the short term construction noises. In the operation phase, change in the river hydrology and the
mailto:[email protected]
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC xv
river morphology in the dewatered stretch is of concern. The chemical environmental impact in the
construction phase relates to the construction activities such as short term air and water pollution of
low to moderate significance. The envisaged impacts, however, could be mitigated with the proven
mitigation measures.
The total land required during the construction of the project is 23.26 ha. About 8.62 ha of the forest
will be affected by the project. Out of total land, about 9.31 ha land belong to the private while 13.95
belong to Annapurna Conservation Area land. The affected area of the project consists of different
vegetation and wildlife species. Cutting down of trees during the construction period may lead to the
migration of wildlife species and destruction of their habitat. Influx of the construction workforce
and their activities (illegal felling of trees, poaching of wildlife etc) is of concern from the
environmental safeguard perspective during construction period.
From the social safeguard perspective, the project is not envisaged to exert economic or physical
displacement of people. During the construction of the project the major issues are concerned with
water resources, soil erosion, pressure on local resources, employment for the local, trainings,
Community health and security, Occupational health and security etc.
6.0 Environmental Mitigation and Enhancement Measures
To mitigate the envisaged impacts, measures to avoid, minimize and compensate the impacts have
been employed in the hierarchical order. The project design has included all the possible avoidance
measures; these measures include selection of sites for project structural locations and ancillary
facility placement and internal access road alignments which have avoided loss of forest land,
standing vegetation and erosion prone areas. For the unavoidable impacts minimization and
compensatory measures have been applied.
The measures to be followed for safety of physical and chemical environment and reducing the
effects are mentioned below:
Control on excavation Civil and bio-engineering protection of erosion prone excavated sites and spoil deposition
sites
Regular maintenance of equipments and vehicles Effluent treatment facilities for the discharges from , batching plant, aggregate washing plant
and camps
Restriction on the haphazard disposal of spent oils and lubricants Storage facilities for the hazardous chemicals and waste
The minimization measures for the biological environmental safeguards are as follows:
Limiting vegetation clearance through prior pegging and numbering Replacing firewood by alternative fuel (kerosene /LPG) in the camps Restriction on the movement of workforce in the wilderness, punitive actions against tree
felling and wildlife poaching by construction workers
Re-plantation of Trees lost
Measures such as awareness programs on community health and safety, occupational health and
safety; provisioning of personnel protective equipment to workers, control and vehicular speed,
roadside parking, entry to active construction sites etc are some of the measures to safeguard social
impacts. For the enhancement of the socio economic condition of the project affected villages, the
measures to be employed are mentioned below:
Employment Opportunity for the locals. Assistance to local educational and health facilities. Livelihood skill training
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC xvi
Women/Youth development programs Agricultural and horticulture extension programs Tourism promotion programs etc
7.0 Environmental Management Plan
Environmental Management Plan (EMP) prepared for the Seti Nadi Hydroelectric Project (SNHEP)
defines project environmental management measures and procedures. The EMP outlines the
organizational structure, and describes the main roles and responsibilities of the parties involved in
project environmental management to safeguard the natural and social environments during the
project development and operation. It set out the key guiding principles and procedures. To handle
the grievance of the local people and other stakeholders a robust grievance handling mechanism is
inbuilt with the EMP. To ensure that the environmental and social measures are implemented in time
bound fashion a protocol for supervision, monitoring and auditing has been established with an
inbuilt recording and reporting system.
8.0 Cost and Benefit of Project
The proposed project generates a significant economic benefit to the country through direct revenue
from energy royalty (about NRs. 1,762,000,000). Besides, during the construction and operation the
project it will have a number of direct benefits from the employment generated (skilled 80, semi-
skilled 100 and unskilled 220) and expenditures to local items. The construction cost of the project is
presently estimated to be around NPR. 4,679,337,475 and per MW cost is estimated to be NRs.
187,173,499. Environmental mitigation, monitoring and environmental enhancement cost is
246,110,000 has also been separated for the project. The construction work of the project will be
completed in 30 months.
9.0 Community Support Program
The community support program by the proponent has separated 0.78 % of total project cost for the
same. This will be spent for various programs as given in the report. This CSP will be used for rural
access road enhancement, support to school, biodiversity conservation trainings, skilled based
trainings, support to mothers group, agricultural support program, skill training for the youths as
given in the report.
`
10.0 Conclusion
Given the short duration of the project construction, its small footprint and easy accessibility along
with the relatively limited effects during the operational phase, there are in fact limited significant
environmental/social impacts associated with the project. The project will incorporate of mitigation
measures and environmental monitoring plan which has been proposed in this report during the
construction and operation phase.
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 1
CHAPTER 1. INTRODUCTION
1.1 Project Background
Seti Nadi Hydroelectric Project (SNHEP) is a run-off-river type project with installed capacity of
25000 KW that will generates 145.66 GWh energy annually. The project is located in Kaski District
Machhapuchhre Gaunpalika in the Gandaki State of Nepal. The proponent of this proposal has an
objective to develop the hydropower sector in Nepal in order to assist the government of Nepal in
meeting challenges of energy crisis and contribute to the socio-economic development of the
country. With the construction of this project, the local people will benefit due job and other
opportunities and local development. Similarly, at national level, this project will add to the total
energy and will be useful to minimize the power crisis.
Vision Lumbini Ltd. wish to develop Seti Nadi Hydroelectric Project (25 MW, Kaski). On 2074/01/08
to 2076/01/07 survey license was issued by DoED for 30 MW. While it was amended by DoED from
30 MW to 25 MW on 2075/10/20. Recently Vision Lumbini Ltd. has applied in DOED for survey
license time extension and one-year extension has been done. MoFE gave permission for EIA study
on 2075/05/03. This study for the project is based on the design components of the feasibility study
and covers all the project components and ancillary facilities required for the project. But, the
report doesn't cover the Transmission Line for the project.
1.2 Proponent and the Institution Responsible for Preparing the Report
1.2.1 The Proponent
The proponent of the proposed project Seti Nadi Hydroelectric (SNHEP) is Vision Lumbini Ltd. The
address of the proponent is as under:
Vision Lumbini Ltd.
Butwal-8, Gurudwara Path
Rupandehi, Nepal
Phone: (977-071) 544316; 549494
Email: [email protected]
1.2.2 Institution Responsible for Preparing the Document
This document has been prepared by Environmental and Health Services International Pvt. Ltd./JV
Nepal Rural and Advancement Committee P. Ltd. for and on behalf of the proponent as per the
legal requirements of GoN. The address of consultancy is as follows:
Environmental and Health Services International Pvt. Ltd.
Post Box No. 10443
Bijulibazar, Kathmandu, Nepal
Phone: (977-1-) 4491538, 977-9823104085
Email: [email protected]
A multidisciplinary team of experts with expertise and experience in the respective fields were
involved in the EIA study. The following experts were involved in study are shown in Table 1.1:
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 2
Table 1.1 Experts Involved in the EIA Study of Seti Nadi Hydroelectric Project
S.N. Expertise/ Capacity Expert Name Qualification
1 Team Leader
/Environmentalist Dr. Akhanda Raj Uprety
PhD in Environment Science
2 Biodiversity Expert Dr. Jyoti Prasad Gajurel M.Sc. in Botany and PhD in
Conservation Biology
3 Sr. Hydropower/Design
Engineer
Er. Buddha Krishna
Manandhar
BE in Civil Engineering,
Masters in Water Resources
4 Sociology and Resettlement
Expert Mr. Prakash Ghimire
MA in Sociology
5 Local Liaison / EHSI
Coordination Mr Lal Bahadur Dhami
MBA
6 Wildlife/Aquatic Expert Mr. Ravi Prasad Devkota M.Sc. in Zoology
7 Forester Mr. Sandesh Lamichanne B.Sc. in Forestry
Apart from the above mentioned key experts, other consultants of different background were
involved during the EIA study and report preparation.
1.3 Rationale for EIA Study
The GoN statuary legal requirements for the environmental studies are stipulated in the EPA’97 and EPR’97. The environmental screening criteria stipulated in the amended EPR such as i) Forest area coverage, ii) installed capacity, iii) project locations in historical/archeological sites, or protected
areas (national parks, wild life reserves, conservation areas, wet lands). Because of the following
project characteristics, project require EIA study:
Protected Area – Annapurna Conservation Area (attracts EPR Schedule 2, अ-३, pertaining to Rule 3 “Implementation of any Project in National Parks, Wetlands, Wildlife Reserve and Conservation Area”).
The forest area is 8.62 ha, which is greater than 5 ha, and need EIA to be done for the project.
For the projects screened for EIA study, the EPR provisions stipulates preparation of Environmental
Scoping Document (SD) and Terms of Reference (ToR) by the proponent and their approval from
the Ministry of Forests and Environment (MoFE) as an initial step for the Environmental Impact
Assessment (EIA) study. In compliance to the EPR provisions, the Scoping Document and Terms of
Reference (ToR) have been prepared and submitted to the MoFE for provision. The MoFE
subsequently approved the SD and ToR. This EIA report is prepared in compliance with the
provisions of EPA and EPR inclusive of the cross-sector legislative framework of Nepal and
International Treaties and Conventions where Nepal is a signatory.
1.4 Objectives of the EIA Study
The objective of the EIA study is to come up with the comprehensive environmental assessment of
the identified issues to ensure sustainable development by avoiding or minimizing environmental
impacts of the proposal development and operation in the proposal influence areas. The EIA study,
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 3
as per EPA (1997) has undertaken following activities to prepare a comprehensive EIA study report
to facilitate objective decision making by the concerned authorities:
Documentation of physical, chemical, biological and socio-economic and cultural baseline
environmental conditions of the proposal development areas from primary and secondary
sources;
Identification and adequate assessment of potential adverse and beneficial environmental
impacts due to proposal development and operation in different alternative scenarios of
proposal development and recommend different alternative development options on
environmental ground;
Elucidation of environmental issues stipulated in the ToR and predict impacts and their
significance in terms of nature, extent, duration, and magnitude for the selected development
option;
Proposed appropriate, practical, cost effective and site specific mitigation measures for the
identified environmental impacts to avoid or minimize or compensate adverse impacts and
capitalize maximum positive impacts for the selected alternative;
Prepared a comprehensive environmental management plan comprising of mitigation,
monitoring and auditing plans associated with proposal development and operation;
Presented the study findings to the concerned stakeholders of the proposal development area
in a public hearing meeting and taken their concerns and suggestions with regard to the
proposal development;
Prepared a comprehensive EIA report as per the format stipulated in the EPR incorporating all
the relevant concerns and suggestions of the concerned stakeholders to facilitate objective
decision making by the concerned decision makers of the Government of Nepal (GoN).
1.5 Scope of the Study
The scope of the work does not include the Transmission line. A separate EIA will be done for the
Transmission Line. The scope includes all project components, internal access road, trees to be fell
down along with their root, crusher plant, batching plant, aggregating plant, quarry sites.
1.6 Relevancy of the Study
Concert and concentrated efforts from all sectors on hydropower development can ensure access
to clean energy in the industrial and domestic sectors, reduce dependence on bio-fuels and provide
export revenues from surplus energy thus enhancing Nepal’s energy security and helping create favorable balance of payments. Realizing this challenge vis a vis opportunity, the proponent of this
proposal has an objective to develop the hydropower sector in Nepal in order to assist the
government of Nepal in meeting challenges of energy crisis and contribute to the socio-economic
development of the country. The project has been design and it has selected the alignment having
minimum impacts to the social and environmental aspects of adjoining areas during construction
and operation phase.
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 4
2 CHAPTER II: PROJECT DESCRIPTION
Seti Nadi Hydroelectric Project (SNHEP) is project located at Kaski District. The project is a run-off
river scheme, which is located at about middle stretch of Seti Nadi.
Seti Nadi originates from Annapurna Himalayan Range. The Seti Nadi is one of the major tributary
of Sapta Gandaki River. The project is located at about 20 km NW of Lamachor (Pokhara).
The Project area covers the longitudes from 83 0 57'15” E to 83 0 58’30” E and latitudes from 28 0 18’40” N to 28 0 22’12” N. The Project site is located on the Topo Sheet No. 2883-12 (GHANDRUK).
Figure 2-1 Project Site with Machhapuchre Rural Municipality Area (Source: site visit 2019)
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 5
Figure 2-2 The project area (source: field visit 2019 Department of Survey and MoFALD)
The Project layout is provided in the Figure 2.2.
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 6
Figure 2.2 Topo Map with Project Layout (Source: Updated Feasibility Report, 2019)
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 7
2.1 Accessibility
The project is accessible from Lamachaur-Ghachowk black top road and is about 20 km and
Ghachowk to Headworks is about 6 km. The project is accessible from Kathmandu by
Kathmandu-Pokhara Prithvi Highway, which is about 200 km in distance.
Figure 2-3 Access Road to the Project site (field survey 2019)
Figure 2-4 Google map of the accessibility (source: Google map 2019)
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 8
2.2 Salient Features
The Seti Nadi Hydroelectric project is a RoR project with 25 MW installed capacity located in
Kaski district under Annapurna Conservation Area. Salient features of the project are
presented in Table 2.1.
Table 2.1 Salient Feature of Seti Nadi Hydroelectric Project
S.No. Descriptions ToR EIA Remarks
1. General
Name of Project Seti Nadi Hydroelectric
Project
Seti Nadi
Hydroelectric Project
Name of the
River
Seti Nadi Seti Nadi
Type of the River Perennial Perennial
Project Layout Left Bank of Seti Nadi Left Bank of Seti Nadi
Type of Project Run of River (RoR) Run of River (RoR)
Province Gandaki (Province 4) Gandaki (Province 4)
District Kaski Kaski
Existing Road Lamachour-
Machhapuchhre
Regional road, Blacktop
& Earthen Road (20 Km
up to Weir)
Lamachour-
Machhapuchhre
Regional road,
Blacktop & Earthen
Road (20 Km up to
Weir)
Rural
Municipality
Machhapuchre Rural
Municipality, wards 1, 2
and 3 (Machhapuchre,
Sardi Khola, Ghachok);
Pokhara metropolitan
(former Puranchour)
ward 19.
Machhapuchre Rural
Municipality, wards 1,
2 and 3
(Machhapuchre, Sardi
Khola, Ghachok);
Pokhara metropolitan
(former Puranchour)
ward 19.
Geographical
Location
Project Boundary
Latitude :28° 18' 40" N
to 28° 22' 12" N
Longitude: 83° 57' 15" E
to 83° 58' 30" E
Project Boundary
Latitude :28° 18' 40"
N to 28° 22' 12" N
Longitude: 83° 57' 15"
E to 83° 58' 30" E
Location of
Proposed Weir
Site
Near Bharabhari village
(Machhapuchre Rural
Municipality Ward 2) on
the left bank and Mirsa
Near Bharabhari
village
(Machhapuchre Rural
Municipality Ward 2)
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 9
Village (Machhapuchre
Rural Municipality Ward
2) on the right bank at
about Elevation 1281
amsl and northeast of
Bhurjung River, Pokhara
metropolitan, ward no.
19 (former Puranchour
VDC).
on the left bank and
Mirsa Village
(Machhapuchre Rural
Municipality Ward 2)
on the right bank at
about Elevation 1281
amsl
Location of
Powerhouse
Near Pokhara
metropolitan, ward no.
19 (Puranchour) at
approximately 1090
amsl and located at
about 7 km
downstream of the
proposed intake. on the
left bank of the Seti
Nadi
Machhapuchre Rural
Municipality Ward 2,
Chinte Bagar at
approximately 1090
amsl and located at
about 7 km
downstream of the
proposed intake. on
the left bank of the
Seti Nadi
2. Internal Access
Road
About 1450 m need to
be constructed (
Earthen road with RoW
of 5 m, Total Length
1450m; For
Headworks: 350 m and
For Powerhouse:
1100m)
About 1500 m need
to be constructed (
Earthen road with
RoW of 6 m, Total
Length 1500; For
Headworks: 350 m
and For Powerhouse:
1150m)
3. Hydrology
Catchment Area
(At Intake) : 253.65 km2 : 253.65 km2
Catchment Area
(At Powerhouse) : 332.53 km2 : 332.53 km2
Design flow
discharge,
Q44.85
:18 m3/s :18 m3/s
Design Flood
Discharge at
Intake
: 745.05 m3/s (100Yr.
flood from Gumbel)
: 745.05 m3/s (100Yr.
flood from Gumbel)
Design Flood
Discharge at
Power house
: 820 m3/s (100 year
return period)
: 820 m3/s (100 year
return period)
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 10
4. Project
Structures
4.1 Headworks and
Intake Structure
Crest Elevation of
Weir
: 1281 masl : 1281 masl
Length of Weir : 38 m : 38 m
Type of Intake : Side Intake : Side Intake
Height of Weir : 5.0 m from river bed
with foundation depth
4.5m
: 5.0 m from river bed
with foundation
depth 4.5m
Bed Level of weir :1276 masl :1276 masl
Operating
Platform level
:1286.75 masl :1286.75 masl
4.2 Intake
Type : Side Intake with
Orifice
: Side Intake with
Orifice
Size : 3.5 m (W) x 2.5 m (H) : 3.5 m (W) x 2.5 m
(H)
Nos. : 3 (Three) : 3 (Three)
Invert Level :1278.00 masl :1278.00 masl
Sill Level :1280.50 masl :1280.50 masl
4.3 Trash Rack
Type : Coarse Trash Rack : Coarse Trash Rack
Rack
Dimension
: 16 mm thick bar @
100 mm c/c spacing
: 16 mm thick bar
@ 100 mm c/c
spacing
4.4 Under Sluice
No. of Bay :2 (Two) :2 (Two)
Design Discharge : 12% of flood discharge
(89.40 m³/sec)
: 12% of flood
discharge (89.40
m³/sec)
Size : 2.5 m x 2.5 m : 2.5 m x 2.5 m
Under Sluice Bed : 1276.00 masl : 1276.00 masl
4.5 Gravel Trap Accessible by Blacktop
and Earthen Road
Accessible by
Blacktop and Earthen
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 11
Road
No of Bay :2 :2
Size : 6.0 m (L) x 6.20 (B) x
3.40 m (H)
: 8.0 m (L) x 6.20 (B) x
6.35 m (H)
Bed load size to
be trapped
: Larger than 5 mm : Larger than 5 mm
Flushing system : Continuous during
monsoon
: Continuous during
monsoon
4.6 Approach Canal
Length of the
canal
: 626.67 m : 626.67 m
Size of canal : 3.0 m x 3.0 m : 3.0 m x 3.0 m
Number of Canal 1 1
Bed Slope 1 in 627 1 in 627
4.7 Spillway at
Gravel Trap
Type : Sharp Crested : Sharp Crested
Crest Elevation : 1281.30 masl : 1281.30 masl
Length : 8.75 m : 8.75 m
4.8 Settling Basin
Type : Intermittent Gravity
Flushing
: Intermittent Gravity
Flushing
No of Bays : 3 (Three) : 3 (Three)
Particle Size to
Settle
: ≥ 0.15 mm : ≥ 0.15 mm
Inlet Transition
Length
: 22.0 m : 22.0 m
Main Settling
Zone Length
: 60.0 m : 60.0 m
Width : 6.75 m each : 6.75 m each
Depth : 10.50 m – 12.0 m : 10.50 m – 12.0 m
Flushing system : Hydraulic Flushing : Hydraulic Flushing
Flushing Opening
Size
: 1.0 m x 1.8 m, RCC
Canal
: 1.0 m x 1.8 m, RCC
Canal
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 12
4.9 Head Pond
Size : 17.70 m x 22.60 m : 17.70 m x 22.60 m
Depth : 11.30 m : 11.30 m
Spillway Length : 20.85 m : 20.85 m
Spillway Crest
Level
: 1280.00 masl : 1280.00 masl
Bed Level : 1270.28 masl : 1270.28 masl
Normal Water
Level
: 1279.67 masl : 1279.67 masl
4.10 Primary Surge
Tank
Material
Specification
: IS 2062: 2011 E350 BR : IS 2062: 2011 E350
BR
Type : Surge Pipe with
Upsurge and down
surge chamber
: Surge Pipe with
Upsurge and down
surge chamber
Diameter : 4.0m dia Surge pipe
connected by 2.6 m dia
connection pipe
: 4.0m dia Surge pipe
connected by 2.6 m
dia connection pipe
Length : 272.52 m : 130.52 m Updated
design
Thickness : 14-16 mm : 14-16 mm
Upsurge chamber :4 m Dia.anf 60 m Long :4 m Dia.anf 60 m
Long
Down surge
Chamber
:4 m Dia.and 60 m Long :4 m Dia.and 60 m
Long
4.11 Connection Pipe
Material
Specification
: IS 2062: 2011 E350 BR : IS 2062: 2011 E350
BR
Diameter : 2.60 m : 2.60 m
Length : 735.27 m (From T-
Junction to surge
chamber)
: 676.77 m (From T-
Junction to Surge
pipe)
Updated
Design
Thickness : 12-22 mm : 12-22 mm
4.12 Secondary Surge
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 13
Tank
Material
Specificatioon
: IS 2062: 2011 E350 BR
Removed
Removed
due to
updated
design.
Type : Surge Pipe
Diameter : 1.0 m
Length : 162.60 m
Thickness : 8 mm
4.13 Headrace Pipe
Material : IS 2062: 2011 E350 BR : IS 2062: 2011 E350
BR
Length : 6113.15 m (Outlet of
Desender to T Juction)
: 6047.95 m (Outlet of
Desender to T Juction)
Changed due
to Updated
design
Internal Diameter : 2.60 m : 2.60 m
Shell Thickness : 10mm-25mm : 10mm-25mm
No. of Anchor
Blocks
: 85 : 86 (including T
junction)
Updated
design
4.14 Steel Penstock
Pipe
Material : IS 2062: 2011 E350 BR : IS 2062: 2011 E350
BR
Length : 228.82 m (Surge Tank
to Bifurcation)
: 354.75 m (T-
Junction to
Bifurcation)
Updated
design
Internal Diameter : 2.60 m : 2.60 m
Shell Thickness : 22 mm : 16-22 mm
No. of Anchor
Blocks
: 3 : 4 Updated
Design
4.15 Powerhouse
Type : Surface with 2 units of
turbine
: Surface with 2 units
of turbine
Size : 41.40 m x 18.40 m x
17.0 m
: 41.40 m x 18.40 m x
17.0 m
Turbine Type : Vertical Axis Francis : Vertical Axis Francis
Turbine Axis : EL. 1092.31 masl : EL. 1093.31 masl Updated
EIA Study of Seti Nadi Hydroelectric Project (25 MW)
Proponent: Vision Lumbini. Ltd. Consultant: EHS Pvt. Ltd. JV NRAC 14
Level design
No of Units : 2 : 2
Type of
Switchyard
: Outdoor : Outdoor
4.16 Tailrace canal
Shape : Rectangular : Rectangular
Size of Tailrace
canal
: 3.60 m x 2.50 m : 3.50 m x 2.50 m Updated
design
Length of tailrace
canal
: 127.0 m : 127.0 m
Tailrace outlet : Seti Nadi : Seti Nadi
Tail Water Level : EL. 1093.50 masl : EL. 1093.50 masl
4.17 Turbine
Type : Vertical Axis Francis : Vertical Axis Francis
Number 2 2
Rated Output
Capacity per unit