Initial Environmental Examination January 2014 NEP: Second Small Towns Water Supply and Sanitation Sector Project-Dhankuta Town Project Prepared by Department of Water Supply and Sewerage, Ministry of Urban Development for the Asian Development Bank.
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Second Small Towns Water Supply and Sanitation Sector Project
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Initial Environmental Examination
January 2014
NEP: Second Small Towns Water Supply and
Sanitation Sector Project-Dhankuta Town Project
Prepared by Department of Water Supply and Sewerage, Ministry of Urban Development for the Asian Development Bank.
CURRENCY EQUIVALENTS (as of 31 January 2014)
Currency unit – nepali rupees (NPR)
NPR1.00 = $0.0099 $1.00 = NPR100.501
ABBREVIATIONS
ADB – Asian Development Bank amsl – above mean sea level CMA – Community Medical Auxiliary DI – ductile iron Dia. – diameter DSC – Design and Supervision Consultant DWSS – Department of Water supply and Sewerage EIA – Environmental Impact Assessment EMP – Environmental Management Plan EPA – Environment Protection Act EPR – Environment Protection Rule GI – galvanized iron GoN – Government of Nepal HDPE – high density polyethylene pipe HHs – households IEE – Initial Environmental Examination lpcd – liter per capita per day lps – liters per second MOUD – Ministry of Urban Development NDWQS – National Drinking Water Quality Standard NEA – Nepal Electricity Authority NGO – Non Government Organization Nrs. – Nepali Rupees O&M – operation & maintenance OD – outer diameter PMC – Project Management Consultant PMO – Project Management Office TDF – Town Development Fund VAT – Value Added Tax VDC – Village Development Committee WHO – World Health Organization WSSDO – Water Supply and Sanitation Division Office WUSC – Water User’s and Sanitation Committee
NOTES
(i) The fiscal year (FY) of the Government of Nepal and its agencies ends on 15 July. “FY” before a calendar year denotes the year in which the fiscal year ends, e.g., FY2011 ends on 15 July 2011.
(ii) In this report, "$" refers to US dollars unless otherwise stated. This initial environmental examination is a document of the borrower. The views expressed herein do not necessarily represent those of ADB's Board of Directors, Management, or staff, and may be preliminary in nature. Your attention is directed to the “terms of use” section of this website. In preparing any country program or strategy, financing any project, or by making any designation of or reference to a particular territory or geographic area in this document, the Asian Development Bank does not intend to make any judgments as to the legal or other status of any territory or area.
Government of Nepal
Ministry of Urban Development
Department of Water Supply and Sewerage
Second Small Towns Water Supply and Sanitation Sector Project
A. INTRODUCTION . .......................................................................................................................................... 5
1. NAME AND ADDRESS OF THE INDIVIDUAL INSTITUTION PREPARING THE REPORT . .......................................... 5
a. Name of the Proposal .................................................................................................................................. 5
b. Name and Address of the Proponent . ......................................................................................................... 5
2. BASIS AND EXTENT OF IEE STUDY ................................................................................................................... 5
a. ADB’s Safeguard Policy Statement, 2009 . .................................................................................................. 6
b. National Laws, Policies, Acts, Regulations, Standards and Guidelines . ................................................... 7
c. Objectives and Scope of the Environmental Study . ................................................................................... 10
d. Relevancy of the Project . .......................................................................................................................... 11
e. Approach and Methodology . ..................................................................................................................... 13
B. DESCRIPTION OF THE PROJECT . ......................................................................................................... 15
1. EXISTING WATER SUPPLY, SANITATION AND DRAINAGE INFRASTRUCTURE ................................................. 15
a. Water Supply ............................................................................................................................................. 15
b. Existing Sanitation Situation . ................................................................................................................... 20
2. TYPE, CATEGORY AND NEED OF THE SUBPROJECT . ....................................................................................... 20
3. SIZE AND MAGNITUDE OF OPERATION . .......................................................................................................... 21
4. PROPOSED SCHEDULE OF IMPLEMENTATION . ................................................................................................. 21
5. DESCRIPTION OF THE SUBPROJECTS . .............................................................................................................. 22
a. Project Components . ................................................................................................................................. 24
b. Project Requirements . ............................................................................................................................... 33
C. DESCRIPTION OF THE ENVIRONMENT . ............................................................................................ 37
a. Forest ........................................................................................................................................................ 40
b. Flora .......................................................................................................................................................... 40
c. Fauna ......................................................................................................................................................... 40
3. SOCIAL AND CULTURAL RESOURCES . ............................................................................................................ 41
a. Population and Communities .................................................................................................................... 41
b. Ethnic Composition . .................................................................................................................................. 41
c. Health Facilities and Sanitation . .............................................................................................................. 42
d. Educational Facilities . .............................................................................................................................. 42
e. Physical and Cultural Heritage . ............................................................................................................... 42
f. Employment ................................................................................................................................................ 42
g. Distribution of Monthly Income Levels . .................................................................................................... 43
4. ECONOMIC DEVELOPMENT AND PROSPECTS FOR GROWTH . .......................................................................... 43
a. Land Use ................................................................................................................................................... 43
b. Infrastructural Facilities............................................................................................................................ 44
c. Economic Development .............................................................................................................................. 44
D. ANTICIPATED ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES . ........................ 45
1. BENEFICIAL IMPACTS AND AUGMENTATION MEASURES . .............................................................................. 45
a. Construction Phase . .................................................................................................................................. 45
b. Operation and Maintenance Phase . .......................................................................................................... 45
2. ADVERSE IMPACTS AND MITIGATION MEASURES . ......................................................................................... 46
a. Pre-construction Phase . ............................................................................................................................ 46
b. Construction Phase . .................................................................................................................................. 46
c. Operation & Maintenance Phase .............................................................................................................. 50
d. Resettlement, relocation and compensation issue . .................................................................................... 50
3. IMPLEMENTATION OF MITIGATION MEASURES . ............................................................................................ 55
Initial Environment Examination (IEE) of Dhankuta Water Supply and Sanitation Sector Project
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a. Project Design . .......................................................................................................................................... 55
b. Project Contract . ....................................................................................................................................... 55
c. Bill of Quantities . ...................................................................................................................................... 55
E. ANALYSIS OF ALTERNATIVES WITH AND WITHOUT PROJECT . ............................................... 56
1. ALTERNATIVE IN DESIGN ................................................................................................................................ 56
2. ALTERNATIVE IN PROJECT SITE/LOCATION . ................................................................................................... 56
3. ALTERNATIVE IN TECHNOLOGY, IMPLEMENTATION PROCEDURE AND RAW MATERIALS . ............................. 56
4. NO PROJECT OPTION ....................................................................................................................................... 57
F.INFORMATION DISCLOSURE, CONSULTATION AND PARTICIPATION . ................................... 58
1. PUBLIC CONSULTATION .................................................................................................................................. 58
2. INFORMATION DISCLOSURE ............................................................................................................................ 58
G. GRIEVANCE REDRESS MECHANISM . .................................................................................................. 59
H. ENVIRONMENT MANAGEMENT PLAN . ............................................................................................... 61
1. ENVIRONMENT MANAGEMENT PLAN AND OBJECTIVE . .................................................................................. 61
2. MONITORING AND MITIGATION . ..................................................................................................................... 61
03. Government of Nepal has prepared a fifteen years development plan to implement the water supply
and sanitation programmes in emerging towns or small towns in order to improve the health and the
quality of life of the people living in the project towns by constructing and extending water supply
system, drainage and sanitation facilities and providing health and hygiene education programmes.
The project follow the community managed demand responsive approach where the community will
be involved from planning phase to construction, implementation and operation and maintenance
phases. The project, ‘Small Towns Water Supply and Sanitation Sector Project, STWSSSP’ is the
outcome of that effort. Asian Development Bank (ADB) has been providing the financial assistance
to implement the project in both the phases (first and second). Department of Water Supply and
Sewerage (DWSS) is the implementing agency whereas Ministry of Urban Development (MoUD) is
the executive agency of the project.
04. Both the Nepali law and ADB policy require that the environmental implications of individual
developments are taken into account in the planning and decision making process and that action is
taken to reduce the impacts to acceptable levels. This is carried out through environmental assessment
process, which has become an integral part of lending operations and project development and
implementation worldwide.
05. The purpose of this Initial Environmental Examination (IEE) is to examine the proposed
infrastructure components and ensure that they will not damage the environment. The IEE will also
provide guidance for their planning, construction and operations of the Project. In the assessment,
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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potential environmental impacts are identified; their significance assessed; and strategies devised to
avoid negative impacts or reduce them to an acceptable level.
06. These strategies (called “mitigation measures”) are then carried forward into the Environmental
Management Plan (EMP). The EMP assigns responsibilities; indicates timescales; and measures
performance for each mitigation measure – to make sure that they are implemented and not ignored.
An environmental monitoring plan is also added to help provide progress on project implementation.
This nominates protocols and responsibilities for checking the operation of the project, to a range of
relevant and agreed performance indicators.
a. ADB’s Safeguard Policy Statement, 2009
07. ADB’s Safeguard Policy Statement 2009 is to consider environmental issues in all aspects of the
Bank’s operations. ADB requires environmental assessment of all project loans, program loans, sector
loans, sector development program loans, financial intermediation loans and private sector investment
operations.
08. The nature of the assessment required for a project depends on the significance of its environmental
impacts, which are related to the type and location of the project, the sensitivity, scale, nature and
magnitude of its potential impacts, and the availability of cost-effective mitigation measures. Projects
are screened for their expected environmental impacts and are assigned to one of the following
categories:
Category A: A proposed project is classified as category A if it is likely to have significant adverse
environment impacts that are irreversible, diverse, or unprecedented. These impacts may affect an
area larger than the sites or facilities subject to physical works. An environmental impact
assessment (EIA) is required.
Category B: A proposed project is classified as category B if its potential adverse environmental impacts
are less adverse than those of category A projects. These impacts are site-specific, few if any of
them are irreversible, and in most cases mitigation measures can be designed more readily than for
category A projects. An initial environmental examination is required.
Category C: A proposed project is classified as category C if it is likely to have minimal or no adverse
environmental impacts. No environmental assessment is required although environmental
implications need to be reviewed.
Category FI: A proposed project is classified as category FI if it involves investment of ADB funds to or
through FI (Financial Intermediaries).
09. The Bank has classified this sub project as of Category B and following normal procedures for
project loans and accordingly an IEE has been conducted.
10. The subprojects comprise of water supply and sanitation improvement works. An initial Rapid
Environmental Assessment (REA) (Annex 2) was undertaken and the Project classified by ADB as
Category B and following normal procedures for project loans, an IEE was conducted.
11. The Asian Development Bank (ADB) affirms that environmental and social sustainability is a
cornerstone of economic growth and poverty reduction in Asia and the Pacific region. Therefore,
ADB’s Strategy 2020 emphasizes assisting developing member countries (DMCs) as they pursue
environmentally sustainable and inclusive economic growth. In addition, ADB is committed to
ensuring the social and environmental sustainability of the projects it supports. The goal of the
Safeguard Policy Statement (SPS) 2009 is to promote the sustainability of project outcomes by
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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protecting the environment and people from potential adverse impacts of projects. ADB addresses the
following objectives in its safeguard policy:
• To avoid adverse impacts of projects on the environment and affected people, where possible; • To minimize, mitigate, and/or compensate for adverse project impacts on the environment and
affected people when avoidance is impossible; and • To help borrowers/clients to strengthen their safeguard systems and develop the capacity to
manage environmental and social risks.
12. ADB’s SPS sets out the policy objectives, scope and triggers, and principles for three key safeguard
26. These acts facilitate the improved management of water and sanitation services. They establish the
legal basis for private sector management of schemes and independent fee setting and regulation
applicable to all urban schemes.
• Solid Waste Management and Resource Mobilization Act, 1987 & Solid Waste (Management and
Resource Mobilization Rules), 1990
27. As solid waste has direct impact on water supply system, discharge of solid waste in either public or
private places have been prohibited under this Act. The rules entrusts Solid Waste Management and
Resource Mobilization Centre, established under the Act, to provide necessary service to individual or
institution in managing solid waste. As such any water resource projects may obtain such service and
maintain the water resource clean.
• Town Development Act, 1988
28. The Act has provisions about the formation of town development committee in any town area to
implement town planning and in carrying out the developmental and reconstruction work of that
town.
• Land Acquisition Act, (2034 BS) 1977 & Land Acquisition Rules, 1969
29. These are two main legal instruments that specify procedural matters of land acquisition and
compensation. Under these, the Government is allowed to acquire any private land paying reasonable
compensation to the affected party for any public purposes or for operation of any development
project initiated by government institutions and the water resources laying and originating within such
acquired area is spontaneously acquired under this process.
• Water Tax Act, 1966
30. Under the Act, the water user who use water through a tap distributed by the government is obliged to
pay water tax as fixed by prevalent laws and charges are levied if the tax is not paid within the time as
fixed by the law.
iii. Standards and guidelines
• National Drinking Water Quality Standards (NDWQS) and Directives, 2005
31. Provides details of the water quality standards to be applied to all water supply schemes. These set
out the water quality parameters, which the water suppliers should adhere to. The directives also
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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ensures that the water sampling, testing and analysis procedures used to certify that the drinking
water supplied or to be supplied conforms to the NDWQS and also sets the monitoring and
surveillance procedures to certify that the quality of supplied water conforms to the standards.
• Water Resource Strategy, 2002
32. Provides a systematic framework for water resource development and identifies action plans to avoid
and resolve conflicts and achieve water related development objectives. It has identified the need to
integrate and coordinate all the uses of natural resources within the catchment basis and has laid
emphasis on the development and management of water resources in a holistic, systematic manner,
relying on integrated water resources management.
• National EIA Guidelines, 2050 BS (1993 AD)
33. In the process of implementing National Conservation Strategy (NCS) in 1990, the government of
Nepal in collaboration with The World Conservation Union - IUCN developed a locally suitable
environmental assessment guideline. Although National EIA guidelines are procedural guidelines, it
substantially encouraged the proponent to prepare an EIA report of the prescribed development
projects and programmes and serves as the primary source of integrating environmental aspects in
major development projects. The National EIA Guidelines contains objectives, methods of screening
projects requiring the level of environmental assessment (IEE or EIA), scoping, impact identification
and prediction, report review, monitoring and evaluation and impact auditing ensuring public
participation during the preparation of the IEE/ EIA report.
c. Objectives and Scope of the Environmental Study
34. IEE is a tool for incorporating environmental concerns at the project level and is carried out as a part
of the detailed study. The objectives are:
• provide information about the general environmental settings of the project area as baseline data • provide information on potential impacts of the project and the characteristic of the impacts,
magnitude, distribution, affected groups and duration • provide information on potential mitigation measures to minimise the impact including
mitigation costs • assess the best alternative project with most benefits and least costs in terms of financial, social
and environmental aspects • provide basic information for formulating management and monitoring plans
35. The present IEE has been conducted for the water supply and sanitation subproject proposed for
Dhakuta Town Project of Dhankuta Municipality, Dhankuta District. It discusses the environmental
impacts and mitigation measures relating to the location, design, construction and operation and
management of the scheme.
36. The scope of the study is to study and prepare IEE report as per the format indicated by EPR 2053 BS
(1997AD) together with the instructions provided by the project management office. The task during
the preparation of this report included description of the project with reference to the physical,
biological and social environment, and identification of potential impacts, mitigation measures and
monitoring plan and related topics. However, the study does not limit itself only here, but has strived
to completeness and objectiveness. As the proposed sub-project is classified as environment Category
B project as per the ADB's Safeguard Policy Statement (SPS) 2009, an Initial Environmental
Examination (IEE) has to be carried out.
37. However, after the enforcement of GoN's Environmental Protection Acts 1996 and Environmental
Protection Regulation (EPR) 1997 (including amendments 1999), all projects under consideration are
required to fulfil either IEE or EIA applications. The screening criterion for the application of IEE or
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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EIA is clearly mentioned in the schedule 1 and schedule 2 of EPR. The points of the schedules
determine whether the project should undergo IEE or EIA.
38. The structural components of Sub- Project including the sources (surface sources e.g. Tankhuwa
stream, Nibuwa Stream, Charchhare, Aitabare etc ) and reservoirs will be located at the land
procured by the WUSC. Transmission mains and distribution network of the proposed project passes
along the forest area and existing road tracks. As a whole, the project does not fall in any restricted
areas, places of cultural, historical and archaeologically important/monuments, conservation areas,
wildlife, National Parks, and other places where the law of the land prohibits any construction
activities. Also the scale of human settlement or human lives affected because of project activities is
quite insignificant.
39. In this way, all the criteria lie within the range of schedule 1 of EPR. As per the ADB's
Environmental Assessment Requirements and Environmental Guidelines for selected infrastructure
Development Projects and GoN's Environmental Protection Regulation, 1997, Initial Environmental
Examination (IEE) is sufficient for the proposed project.
40. The current studies have been conducted as per the TOR approved by MoUD on dated 2070/2/19 BS
(June 2, 2013 AD). The environmental issues identified by the TOR have been looked into in detail
by this study and EMP and has been designed to address these issues.
41. The impacts of providing infrastructure in the areas have been assessed and the Initial Environmental
Examination (IEE) Reports and Environmental Monitoring Plans produced. Studies were conducted
according to ADBs Safeguard Policy Statement 2009 and GoNs Environmental Protection Rules
(1997) and amendments.
d. Relevancy of the Project
42. As per the TOR, it is stated that the project needs to be studied from the environmental point of view
as per EPA 1997 and EPR 1997 (Amendments 1999 and 2007). The proposed water supply and
sanitation project is an extension and rehabilitation of the existing district water supply and sanitation
system which is meant primarily for the market area but has also been supplying a part of the
proposed service area. It is expected that on implementation of the project the users of the area will be
able to avail adequate amount of safe drinking water. The project needs to go through IEE process as
stipulated in EPR 1997(Amendments 1999 and 2007). The proposed project shall be using surface
water. The treatment capacity of the proposed units are 24.46 lps ie, less than 25 lps. The Project
does not involve construction of any tunnels; relocation of people or households, there is no need to
settle any households above the gravity source, and construction of river training works (more than 1
km) is not required. The project shall benefit more than ten thousand persons in the area with higher
and better water services.
43. As the proposed project falls within the definitions provided in the EPR 1997(Amendments 1999 and
2007) Annex 1 (G) for drinking water projects; only an IEE is required. The regulation stated in
Annex 1 (H) shall only be applicable, if the proposal does not fall under categories (A) through (H) of
Annex 3.
44. Table 1 compares the status of the project point by point against the conditions defined by
Environment Protection Act 1997 and Environment Protection Regulation 1997 (and its amendments
2007) for which a drinking water would require IEE or EIA.
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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Table 1: Criteria for Requirement of IEE and/or EIA for Drinking Water Supply Projects as per Annex 1
and Schedule 1-G and Annex 3 Schedule 1-H of EPR, 1997 Amendment 2007 Compared with the
Situation of the Project
S.N Condition described in
the Act and Regulations
IEE Required as
per the Regulation
Annex 1 G
EIA Required as
per the Regulation
Annex 3 H
Conditions in this Project
1 River Control (training) Up to 1 kilometer Over 1 kilometer NA
2 Channeling Water from
one Watershed to Another
Applicable Applicable NA
3
Rain Water Collection
and Use of Spewing
Wetland
Up to 200 hectares More than 200
hectares
NA
4
Supply of Water in Dry
Season from Surface
Water Source with a safe
yield of
Up to 1 cusec and
utilizing up to 50 %
of the available
quantity
More than 1 cusec
and utilizing the
total available
quantity
(1 cusec = 28.34 lps)
Total required supply is
24.86 lps from different
surface sources
5 Ground Water Recharge Up to 50 % of total
aquifer
More than 50 % of
aquifer
NA
6 Water Treatment 10- 25 litre per sec Within limit (25 lps)
7 Construction of Tunnel
for Channeling Drinking
Water
Not more than one
kilometer
more than one
kilometer
Tunnel construction not
required ( NA)
8 Water Resource
Development which
Displaces People
(Permanent Residents)
25 to 100 people Over 100 people Not done
9 Settlement of People
Upstream of Water
Source
Settlement of up to
500 people
Settlement of
above 500 people
Not done
10 Supply of water to a
population of
2,000 to 20,000 Over 20,000 Within 20,000
(Present Population 15,139)
11 Connection of New
Source to Supply Water
to existing water supply
system for a population of
10, 000 - 100, 000 More than
100, 000
Population within the given
envelope
[Present Population 15,139
Design year (2030)
population 22,475]
12 Extraction of water from
point and non-point
sources or underground
water sources (over
mining of biologically or
Chemically polluted
point and non point
sources)
NA Applicable No non-point and point
sources of pollution in the
vicinity of the water source
13 Operation of water supply
project included in a
multipurpose project
utilizing a source of 25
liter per sec water.
(Construction of Multiple
Purpose Reservoir
Required)
Not operated Operated This is not a multipurpose
project and is solely for
water supply
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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e. Approach and Methodology
45. The present Initial Environmental Examination report has been prepared based on the Terms of
Reference (TOR) approved by the Ministry of Urban Development, Government of Nepal dated on
2070/2/19 BS (June 2, 2013 AD).The study has followed the provisions outlined in the
Environmental Protection Act, 1996 and Environmental Protection Regulation, 1997 and Safeguard
Policy Statement, 2009 of the Asian Development Bank (ADB). The major activities undertaken
during the preparation of IEE are outlined below.
i. Desk Study
46. Existing secondary data relevant to the proposed project was collected from various published and
unpublished sources from different governmental and non-governmental organizations. All the related
maps, aerial photographs, newspaper articles were gathered and studied. The engineering report of the
project and other relevant documents were thoroughly reviewed. Policies, legislations and guidelines
relevant to the project were also referred.
47. The desk study also involved the preparation of questionnaire (see annex) for detailed field study to
collect the primary data within the Zone of Influence (ZOI). In order to specify the area that would be
covered by the assessment, the geographical boundary of the influence area was delineated on the
topographical map. Depending upon the nature and extent of the expected impact area, the Zone of
Influence (ZOI) was categorized into Direct Impact Zone (DIZ) and Indirect Impact Zone (IIZ).
• Direct Impact Zone (DIZ)
48. The project directly affected by the project activities are demarcated as Direct Impact Zone. DIZ can
also be said to be the project area. The area bounded by Hile Bazaar in the North , Dadagaon in the
West , Nibuwa / Tankhuwa streams in the East and areas connecting Tallo Atmara and Nasal Chowk
in the West were delineated as Direct Impact Zone. Koshi Highway passes through the DIZ.
• Indirect Impact Zone (IIZ)
49. The area around the DIZ that could be indirectly affected due to project construction and
implementation activities such as mobility of people, equipment, vehicles, noise, dust, vibration are
demarcated as the Indirect Impact Zone.
ii. Field Work
50. Water sampling was carried out in dry and wet seasons of 2012/2013. Random sampling method was
used so that overall study area was covered. Grab sampling method was used for collection of
samples. A total of forty samples were collected representing Dhankuta Municipality Water Supply
including ward 2 to 7. A detailed field investigation was carried out during February, 2013 to collect
baseline information on the physical, socio-economic and cultural environment of the project area.
The local communities were consulted to understand the social and physical nature of the area. A
walkover survey was carried out to identify the environmental structures and to gather relevant
baseline information on physical, biological and socio- economic spheres. A questionnaire survey
covering 10% of the households were conducted to examine the socio-economic condition of the
service area. In addition to it a questionnaire survey was carried out to examine public awareness
about drinking water quality of Dhankuta municipality. Data related to number of patients suffering
from water borne diseases from 2068 B.S. to 2070 B.S. was collected from Dhankuta Hospital.
• Physical Assessment
51. Existing physical attributes of the project area were studied through topographical map and site
observation, complemented by secondary source of information from reports and interviews.
Information on the location, topography, land use, geology, and soil hydrology were collected during
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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field work through reports obtained from different institutions eg, Dhankuta Municipality,
Department of Survey etc
• Biological Assessment
52. The ecological attributes of the area was gathered during the field survey. Information on vegetation
pattern, wildlife, parks and reserves, sensitive habitats were collected. Identification of wild flora and
fauna, rare and endangered species were done during field observation and by questionnaire survey.
The scientific names of the flora and fauna were later recorded referring to the secondary sources of
data books.
• Socio-economic Assessment
53. Socio-economic and cultural environment of the project such as population, community structure,
distribution of income and sources of livelihood, and expected water users obtained through various
secondary and primary sources of data. These included literature review, questionnaire survey, focus
group discussion, and the suggestions and comments obtained from all relevant stakeholders though
public notice and consultation process.
iii. Data processing
54. The information obtained from the desk study and field works were processed in a standard format to
maintain consistency. The data were tabulated and maps were interpreted. The mitigation and
monitoring measures were then proposed based on the impacts identified during the study.
iv. Consultation and Information Dissemination
55. Public consultation and information dissemination process has been necessary to inform the local
people and concerned agencies about the project and to obtain their concern, issues and suggestions.
The methods adopted for conducting public consultation included holding meetings with district
officials, concerned departments, institutions and NGOs. Focus Group Discussions (FGDs) and
meetings were also held with the stakeholders within the Zone of Influence (ZOI).
56. Similarly the information about the project was disseminated through publication in national
newspaper giving details about the project and by inviting any comments and concerns. A copy of
the publication was also displayed in the Municipality office, health institutions and other public area
in the project. The final IEE report, after incorporating the comments from concerned department and
ADB, will be made available in their respective websites and will be made available to anyone
interested upon request.
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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B. DESCRIPTION OF THE PROJECT
1. Existing Water Supply, Sanitation and Drainage Infrastructure
a. Water Supply
57. A system of 7 public stand posts of water supply was built during the Rana regime (before 1930) The
intake of this system known as Sawa khola has the discharge of 0.5 lps located at foothills of Hile
bazaar. Later in 1980, DWSS upgraded the system with 115 taps by collecting water from the sources
Trisule, Mudhe, Thulo khola, Sarki khola and Raniban. The intakes: Sarki khola and Thulo khola
intakes are now under the control of Hile water supply system committee. This was further improved
in 1994 with the grant aid from British Gurkha Welfare Fund collecting the additional sources of
Aitbare, Chharchhare, Devi Khola and Thodne. The total extraction was 9 lps. This gravity flow
system contains a treatment plant with plain sedimentation, roughing filter and reservoir tank
constructed at Schooldada whereas slow sand filter, chlorination unit, WUSC office building are near
to the army barrack at Sallaghari. The existing Dhankuta Water Supply system was constructed with
the cooperation from UK/India /S.Korea/DWSS/WUSC/Users in different periods of time.
58. WUSC took over the scheme in 1997 when the number of taps was 700. Later the Indian Embassy
donated HDPE pipe and materials for the construction of another treatment plant at Salleri. The
treatment plant has the capacity to treat 9 lps.
59. Two treatment plants with the capacity of 18 lps and 9 lps capacity located at Schooldada
(constructed under British Gurkha Welfare Scheme) and Salleri ( Constructed under Indian Embassy
Welfare Scheme) are functioning well.
60. Salient features of existing water supply is presented below:
i) Flow : Gravity flow system
ii) Intake : 17 nos
iii) Transmission length : 41 Km
iv) Air valve : 12 nos
v) Valve chamber : 7 nos
vi) BPT/IC : 8 nos
vii) Plain sedimentation : 2 nos/2 x9 lps
viii) Roughing filter /capacity : 2 nos/2x9 lps
ix) Slow sand filter
At Schooldanda 18 lps
Salleri 9 lps
x) Chlorination unit : 2 nos
xi) Distribution Reservoir/capacity : 34 nos/(300)m3
xii) Community reservoir : 7 nos
xiii) Community Taps : 48 nos.
xiv) Private tap connections : 1650 nos
xv) Governments tap connections : 100 nos
xvi) Distribution hours : 1-1.5 hours a day
xvii) Altitude of water sources : 1650 m to 1400m
xviii) Reservoirs altitude : 1390 m ( Schooldanda) and 1250 m ( Salleri)
61. Almost 34 reservoirs / distribution tanks are functioning in the town. Most of them are of masonry
structure of smaller capacity ranging from 3 m3 - 8 m
3. These are leaking and are in deteriorating
conditions. Major reservoir tanks are:
• Schooldada : 50 m3 (RCC) ( in good operating condition)
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
Duwadi, Rasaili, Mishra, Subedi, Thechmi, and Bakhati. The questionnaire was organized so as to get
information on respondent representing different wards, family structure, water source, water
requirement, water supplied interval, water supplied time, adequacy of supplied water, consumers
response on need of water, methods used to ensure safe drinking water, consumers response on odour,
water availability, response on water scarce months, water tariff, willingness to pay and consumers
satisfaction. There were sixty respondents representing from ward two to seven of Dhankuta
Municipality. The analyses of different questions surveyed are given below:
Figure 1.1: Respondents Representing Different Wards in Project Area
64. Households with private water tap connection covered 93% (figure 1.2). Others acquire water from
community taps. When there is shortage of water supplied by piped system, people fulfil their water
requirement from Kuwa and also there are few tankers which supply water at certain cost.
Community tap are for those who cannot afford private tap. It is provided to certain group of people
who use and also pay water tariff accordingly. Those who use community taps and Kuwa, walk for a
minimum of 30 minutes to fetch water.
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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Figure 1.2: Different Water Sources Used in Project Area
`
65. Daily water requirement for 75% of respondents is less than 135 L per capita while about 25%
respondents consume more than 135 L per capita to perform all household tasks including their farm
(figure 1.3).
Figure 1.3: Daily Water Requirements in Project Area
66. About 38% of the respondents believed that the water is supplied daily, whereas for about 27% water
is supplied more than once in a day, and for 35% it is supplied only once in two days. This
distribution of water is according to water availability. There seems to be irregularity in water supply
(figure 1.4).
Figure 1.4: Water Supplied Interval in Project Area
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67. Water supplied timings to public taps and community taps is about an hour (figure 1.5). In some
places water is supplied for less than an hour. About 42% each respondents receive water for less or
equal to an hour, whereas about 16% only receive water for more than an hour.
Figure 1.5: Water Supplied Timings in Project Area
68. About 76% of respondent said water provided is not enough to perform their day to day activities.
Only 24% believed that the water supplied is adequate (figure 1.6).
Figure 1.6: Adequacy of Supplied Water in Project Area
69. When people were asked about water availability, 76% of them said water was available all the year
round (figure 1.7). Though water was received all the year round; in rainy times, it is believed that the
water is not fit for drinking owing to high turbidity.
Figure 1.7: Availability of Water in Project Area
70. There is shortage of water mostly in the months of Falgun, Chaitra, Baisakh and Jestha (February, March,
April, and May) (figure 1.8).
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Figure 1.8: Water Scarce Months in Project Area
71. The minimum tariff for using municipal water is Rs. 250 per month. All respondent (100%) pay tariff for
using the service. About 63% of respondent pay less than Rs. 300 per month. There are users who pay
more than Rs. 500 per month. The households are found willing to pay on an average Rs.207 per month if
the households get enough water as per their needs and better services.
Figure 1.9: Consumers’ Paying Water Tariff in Project Area
72. In response to the question about satisfaction with the service provided by municipality, 58 %
expressed their dissatisfaction (figure 1.10). They want municipal water supply to provide adequate
water with improved quality. Also some of them want the pipeline distribution to be improved.
Figure 1.10: Satisfaction Level of Respondents to the Service Provided by the Municipality
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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b. Existing Sanitary Situations
73. Almost 93% of the households of the service area possess latrines. The main reasons for having
latrines are awareness of the people towards the importance of sanitation and personal hygiene.
Regarding the types of household latrine, 53% of the households have water seal typed, followed by
23 % of ventilated type 17% pit latrine type and 7% of households do not have toilets.
74. Two public toilets one in buspark area and the other in Bihibare Hat (market place) are serving
people. It was learned that about 300 people use the toilets every day. Operation and maintenance is
carried out from the money raised from the users.
75. A sanitary land fill site located in Atmara ward # 3 of Municipality has an area of 47 Ropani (24,000
m2) and is expected to cater for 30 years. It was constructed in 2010AD with the cooperation of GoN-
LGCDP (Local Governance Community Development Programme), users group and municipality.
One tractor is utilized to collect waste from the market. Presently 13 staffs are providing day to day
service for managing the solid waste. It is learnt that the waste mainly consists of plastic materials eg,
bottles, wrappers, etc. These are segregated and sold to scrap dealers.
Figure 1.11: Existing Sanitary Situations a) Percentage Households with Latrine Types (left),
b) Percentage of Households with Solid Wastes Management Types (right)
76. Regarding the knowledge on appropriate site for solid waste (garbage) disposal or management, about
61% reported that they are using pits near the houses. Similarly, about 35% use can / bin managed by
the Municipality for waste disposal.
77. There were 1250 cases of community people suffering from water borne diseases last year. No cases
of mortality were recorded for children below 5 years of age. Dhankuta District Hospital is in the
project area.
78. About 14 km storm water drainage constructed of stone masonry can be observed along highway and
in the market area. Rest of the service area does not have surface drainage facilities.
2. Type, Category and Need of the Subproject
79. This proposed project falls in category B of ADB environmental categorization. There is a mixed use
of gravity and surface water based pumping system, treatment plants, reservoirs at ground level and
pipe network system to provide house connection to the majority of the household and institutions.
80. The service area is a part of Dhankuta Municipality (ward# 2-7) and lies along the Koshi Highway. It
is the district and regional headquarter of the Eastern Development Region of the Country.
81. The existing water supply system has been providing drinking water to the community for years. It is
observed that the system has outreached its design capacity; only 52% households are covered, and
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are not able to cover more areas. In some of the wards water is distributed on alternate days for 1
hour.
3. Size and Magnitude of Operation
82. The project is situated in Dhankuta Municipality in Dhankuta district of Koshi zone. The project area
is situated along the Koshi Highway. The town project area is located at 260 58’29.27” latitude and
870 20’36.51” longitude, having altitude ranging from 1169m to 1560m above mean sea level and
covers ward no 2 to 7 of Dhankuta Municipality.
83. The scheme is designed for the design year population of 22,475 in 4,644 households (in the year
2030). Three major existing surface sources which are providing 8 lps of water to the system will
also be continued in this project. Considering the scarcity of water in the dry season 8 lps of water
from Tankhuwa will be collected down at the bank of Nibuwa Stream. After jointly treating the water
from both sources ( Nibuwa and Tankhuwa) 16 lps of the water will be pumped from Nibuwa Stream
to Schooldanda (665 m height) to cater the demand for the design year 2030.
84. Part of the proposed project is under operation. Similarly in some places structures like stream
intakes, slow sand filter, roughening filters, and reservoirs are in operation. These existing structures
are to be utilized. Because of land topography and the settlement patterns, existing water supply
structures, the Project area has been sub divided into four different subsystems, so that each part is
served by its own water supply system. As per the system layout the separate service area coverages
are:
i) Nigale Subsystem covering part of ward 2: This subsystem will mainly covers Nigale,
Kagate, Mathillo Sifting, Tallo Sifting etc. Three numbers of 20 m3 RCC reservoir are in good
operating condition. One additional 20 m3 RCC reservoir is proposed. Treatment plant
including roughening filter, sedimentation unit and slow sand filter are provided to serve
treated water to the people of these areas.
ii) School danda subsystem: This subsystem will serve part of ward no 3 and 4. One 50 m3 and
two 20 m3 RCC ground reservoirs are operating in good condition. This subsystem will serve
Mathillo Kachide, Tallo Kachide, Mathillo Atmara, Tallo Atmara, of ward number 3 and other
parts of ward # 4 eg Wagle Utasahi, Amaltar, Adhikari tole, Mohan Biscuit etc.
iii) Salleri subsystem: This subsystem will cover the main bazaar area i.e, part of ward numbers 5
and 6. A Slow Sand Filter (SSF) having capacity of 15 lps is already in good operating
condition. A 300 m3 RCC ground based reservoir has been proposed to serve this subsystem.
iv) Chuliban (Dadagaon) subsystem: This subsystem aims to serve part of ward 7. A 125 m3
RCC ground based reservoir has been proposed at Dadagaon.
85. The length of transmission pipe has been estimated as 51 km (including 41 km existing, proposed 2.2
km for pumping scheme, 7.85 km for Tankhuwa to Nibuwa). Similarly the length of distribution pipe
network is proposed to be 57.85 km. The cost of the Project is estimated at NRs 268,714,040 (water
supply component only) and NRs 13,434,431 for sanitation component.
4. Proposed Schedule of Implementation
86. The work will be contracted to a contractor, the standard procedure for selection and tendering will be
followed as per the norms of the Fiscal Act and Regulations. These will comprise of • tendering and approval of contract, • presentation of security performance, • field mobilization of workers, technicians and professional of the contractor,
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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• procurement and transportation of materials, • installation of structural works, mechanical works, pipe works and finishing works.
5. Description of the Subprojects
87. The Dhankuta Town Water Supply and Sanitation Sector Project has been conceptualized as a piped
water supply system based on existing gravity systems and pumping of water from surface sources for
additional water to cater the demand with ground reservoirs for distribution. The system has been
formulated for a reliable continuous 24 hours drinking water supply in adequate quantity and quality
to the consumers of the service area at the desired service level. The schematic system layout of the
project components is given in Figure 1.12 for easy conceptualization.
Figure 1.12: Schematic Layout of Project Components
Tamor river
Sludge
Drying Bed
Nibuwa stream
Tankhuwa Stream
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Table 2: Salient Features of Dhankuta Town Project
S.No. Items Description
1 Name of the Project Second Small Town Water Supply & Sanitation Sector Project,
Dhankuta Town Project
2 Type Gravity & Pumping Scheme
3 Location Area
Region Eastern Development Region
District Dhankuta
VDC/Municipality Municipality
Ward 2 to 7
4 Source Characteristics
Source Name Nibuwa & Tankhuwa (proposed for Pumping Scheme) (stream
intakes)
Other spring sources for gravity system : Aitebare, Tindobhane,
Lungdang (in operation)
Source type & location All surface sources
Ward # 1 for Gravity and
Ward # 5 for Nibuwa and Tankhuwa VDC for Tankhuwa Stream
Tapped yield (lps) Gravity :8.46 lps
Pumping from Nibuwa : 16 lps
Pumping Head 665 m
Pumping hours: 19 hrs @ 16 lps
Pumping station 3 #, 50 m3 reservoir for initial stage and 20m3 reservoir in other
two stations
Pump type Submersible type 32 HP each with
2 # 32 HP in operation in each pumping station
Storage Tank Existing 20 m3 ground reservoir in Tallo Shifting
Existing 20 m3 ground reservoir in Mathillo Shifting
Existing 20 m3 ground reservoir in Syaule
Proposed 20 m3 ground reservoir in Syaule
Existing 50 m3 ground reservoir in School danda
Existing 20 m3 ground reservoir in School danda
Existing 20 m3 ground reservoir in Schooldanda
Proposed 300 m3 ground reservoir in Salleri
Proposed 125 m3 ground reservoir in Chuliban
TOTAL 595 m3 of reservoir
Intake Stream Intake 1.5m ht : 2# for Nibuwa and Tankhuwa streams
Other existing operating intakes will be used
Household Connection (Nos.) 3130 for base year 2015
Total Length of pipe (Km) Transmission :
Existing: 41 km
Pumping mains GI(150 mm dia) = 2.2 Km
Tankhuwa to Nibuwa (HDPE 6kg class) : 7.85 km
Distribution : 57.85 Km
Electrical Generator-3, Transformer-3, 11 Kv Transmission 2.1 Km
Treatment Unit Existing Conventional Treatment Plant with Sedimentation, SSF
and Chlorination
Grit chambers, Sedimentation, Roughening filters are proposed
using existing SSF at Schooldanda for pumping scheme.
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S.No. Items Description
5 Social Status
Present Population (2012) 15,139
Base Year Population (2015) 16,169
Design Year Population (2030) 22,475
Adopted Growth Rate % 2.22 (Average)
Household Numbers (2012) 3130
Average Family Sizes 4.84
6 Total Water Demand
Base year 2015 (m3/day) Total 1,270.73
Design year 2030 (m3/day) Total 1,766.31
7 Total Cost of the Project (NRs.) 282,148,471.72 with 15% contingencies & 13%VAT
Water Supply Sector NRs 268,714,040.59
Sanitation Sector NRs 13,434,431.13
Sanitation Components
a) equipment for Solid waste
management
NRs 1,635,000.00
b) Sludge Drying bed & Sludge
suction Tanker mounted on
trailer
NRs 2,901,542.00
c) Bio engineering works including
plantation, wicker works etc
NRs 6,202,990.00
d) Protection works ( Gabion
Work)
NRs 1,149,345.00
8
Cost Sharing Arrangement for
water supply component (NRs)
268,714,040.59
a) GoN / ADB @ 50% NRs 134.357 million
b) WUSC Contribution
c) Users contribution @ 5% to 15
%
NRs 13.44 to 40.31 million
d) Loan through TDF @ 35% to
45%
NRs 94.05 to 120.92
9
Cost Sharing Arrangement for
Sanitation component (NRs)
NRs 13,434,431.13
a) ADB/ GON NRs 11.42 million
b) Local body /users etc NRs 2.014 million
10 Environment
ADB Category Category B
IEE finding No adverse effect, IEE required
a. Project Components
i. Water Supply System
Source Location:
88. The designated sources to serve the service area are existing surface sources namely Tindhobhane
source, Aitabare-Lungdang as gravity sources and combination of Nibuwa and Tankhuwa stream as
pumping scheme.
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89. Location of existing major three sources are situated in ward no 1, almost 13 km north of Dhankuta
Bazaar. Nibuwa stream is located on the eastern boarder of the municipality. About 8 lps of water
from Tankhuwa stream which lies 8 km distant will be collected near Nibuwa and collectively
pumped for distribution purpose. A pumping transmission main requiring 2.2 km in length and 665m
of head is to be developed from Nibuwa stream.
Source Yield:
90. Nigale and Schooldanda subsystem will be catered by Chuliban and Aitabare sources respectively.
These existing gravity sources are yielding 1.17, 2.07 and 5.22 lps respectively for years in the dry
season. Considering the scarcity of water in the dry season 8 lps of water from Tankhuwa will be
collected down at the bank of Nibuwa. After jointly treating water from both sources 16.0 lps will be
pumped. Following table describes the safe yield of sources.
Table 3: Safe Yield of Sources S.No Source Type Safe
Yield
(lps)
Remarks
1 Chuliban Gravity 1.17 In operation
2 Aitabare Gravity 2.07 In operation
3 Tindobhane Gravity 5.22 In operation
4 Nibuwa
+Tankhuwa
Pumping 16.0
proposed
TOTAL 24.46
91. For the monsoon season the entire systems will be run from gravity sources. From Aitabare source,
WUSC has already laid pipes to carry additional 4lps of discharge in monsoon season and is in
operation. By laying additional transmission pipe to carry about 11 lps of water from Tindhobhane
source, pumping duration could be reduced even after the rainy season.
92. Discharge of the Tankhuwa stream was measured as 52 lps in the month of December 2012. Similarly
that of Nibuwa river at the proposed intake site was measured to be in order of 60 lps ( in April 2012
discharge was measured to be 42 lps). Both of these are ground water fed streams and are perennial.
Dhankuta WUSC is allowed to use pipe size not exceeding 125 mm to transmit water from Tankhuwa
stream. WUSC can thus indisputably utilize both the sources. Hence, availability of water for
pumping will be sufficient.
Intake:
93. The total water demand in the project area comes out to be 1766 Cu m/day for 2030. From existing
gravity sources 691 Cu m/day (8.46 lps) will be collected from existing operating sources. Additional
water of 16 lps will be collected from Nibuwa and Tankhuwa streams. Stream intakes of 1.5m height
from bed level are proposed for Tankhuwa and Nibuwa streams. These concave shaped gravity dam
type intakes are proposed to be constructed with rockfill (dry stone masonry) in the core and covered
with RCC. Two layers of 1m high check dams will be provided upstream for arresting unwanted
materials. Further protection will be carried out by providing 1m high dry stone masonry using
gabions. Similarly existing intakes are proposed to be cleaned and damaged portions repaired.
Transmission mains:
94. The existing gravity sources are located about 13 km from the bazaar. For three sources about 41 km
of transmission mains are in operation. Though these are GI ( Chuliban source) and HDPE (other two
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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sources), are functioning well. Other transmission main required is from Tankhuwa to Nibuwa from
where water is proposed to be collected down to Nibuwa. HDPE pipes of 125 mm size of class 6
kg/cm2
is proposed. For Nibuwa river to Schooldanda where 665 pumping head is needed, GI pipes
of size 150 mm is proposed as the site has steep slopes and is rocky. Most of the pipe line shall be
above ground and suitable support pillars shall be provided.
Treatment Facilities:
95. Water quality assessments of the presently used and proposed sources were carried out. Though
most of the physical parameters are found within the NDWQS, 2062 bacteriological parameters are
found not within the NDWQS. The Total and Faecal Coliforms in proposed sources are found high
and are not within the standards set by NDWQS, 2062. The water quality has worsened in the rainy
season due to increase in runoff of the sources with associated increase in suspended solids, turbidity
and dissolved minerals. Hence, water from these sources cannot be considered safe and requires
treatment before supplying to the public.
96. The water treatment system consisting of grit chambers, sedimentation tank, roughing filter, slow
sand filter and disinfection is proposed in both the Tankhuwa-Nibuwa Stream subsystem and other
gravity flow water supply subsystems to make the water safe for drinking purpose as per the
requirements of the NDWQS.
Grit Chamber:
97. Grit chamber of 10 lps capacity each is proposed near the intake site of the Tankhuwa Stream and
Nibuwa Stream in Tankhuwa-Nibuwa Stream subsystem to remove the grits and suspended particles
and reduce loads in the subsequent treatment components. The horizontal flow rectangular grit
chamber made of stone masonry with 10 minutes detention time is proposed. The surface overflow
rate of the grit chamber is 6000 l/m2/hr. The grit chamber is expected to remove all the particles of
equal or greater than 0.05 mm with specific gravity of 2.65 at 10oC. Grit chambers are also
proposed for other sources to arrest the subsequent particles.
Sedimentation Tank:
98. The effluent of the grit chamber will still contain small suspended particles especially during the
rainy season. Sedimentation tanks are proposed in the Tankhuwa-Nibuwa Stream subsystem and
other gravity flow subsystems to remove grits and suspended particles. Sedimentation tank will
remove the suspended solids including precipitated minerals. The horizontal flow rectangular
sedimentation tank made of R.C.C. with 3 hours detention time is proposed. Two sedimentation
tanks each with capacity of 8lps are proposed in the Tankhuwa-Nibuwa Stream subsystem so that at
least one of them is working while another one is under maintenance. This will provide continuous
water treatment thus increasing the service level. However, only one sedimentation tank is proposed
in the gravity flow subsystems of 2 lps capacity due to limited capacity. The proposed sedimentation
tank is expected to remove 70% of the suspended solids.
Roughing Filter:
99. The water from the outlet of the sedimentation tank is conveyed to the inlet of the roughing filters.
The roughening filter removes the suspended solids including the precipitated minerals thus by
reducing the turbidity in the water. The R.C.C. horizontal flow type rectangular roughening filter
with 3 compartments packed with gravel has been proposed. The filtration rates of 3.0 and 1.5
m3/m
2/hr have been adopted for Tankhuwa-Nibuwa Stream subsystem and other small gravity flow
subsystems, respectively. Four units of roughening filters each with capacity of 4lps are proposed for
Tankhuwa-Nibuwa Stream subsystem while two units with 1lps capacity of roughing filters are
proposed for and other gravity flow subsystems requiring discharge of 2 lps. The water from the
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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roughing filter is conveyed to the slow sand filter for further removal of turbidity and
microorganisms. The roughing filter removes suspended solids present in the water and prevents
frequent clogging and cleaning of the slow sand filter.
Slow Sand Filter:
100. Slow sand filter (SSF) made of R.C.C. is proposed to remove fine suspended solids there by
reducing the turbidity of water. The slow sand filter is to be packed with sand and gravel. An under -
drainage system is installed below the gravel support to collect the filtered water. The filtration rate
of 0.20 m3/m
2/hr has been adopted. The existing slow sand filter situated in Schooldanda will be
utilized for Tankhuwa-Nibuwa Stream subsystem and two units for small gravity flow subsystems.
The slow sand filter is expected to bring down the turbidity of water as per NDWQS. Large number
of coliforms is expected to be removed in the slow sand filter.
Disinfection:
101. Although SSF removes coliforms to a certain extent, the effluent of the SSF might still contain
coliforms which might be harmful to human health. These coliforms are killed by the disinfections
process and make the water safe. Disinfection is proposed by the addition of bleaching powder in the
reservoir. Bleaching powder is to be dosed from a dosing tank. The chlorine dose of 1 mg/l is
proposed.
Pumping Stations:
102. A stream intake shall be constructed and the water after grit removal and roughening filtration shall
be collected in a 50 m3 capacity tank which shall be pumped to a service reservoir situated above
665 m. Three pumping stations are proposed. The following figure 1.13 illustrates the position of
pumping stations and collection tanks.
Figure 1.13: Nibuwa Stream Pumping Scheme
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Collection Tanks:
103. A water collection tank of suitable capacity is necessary when the discharge rate of the water source
is less than the pumping rate. During maintenance of the intake and treatment units it may be
necessary to interrupt water supply from the source and a water tank may become necessary. This
also helps to maintain necessary head for the pump water tank. For the first stage of pumping
relatively larger size of collection tank for retaining water for 50 minutes, a 50 m3 capacity water
collection tank is proposed. For other stations a 20 m3 collection tank is proposed.
Ground Level Reservoir / Overhead Tank:
104. As governed by topography multiple distribution systems have been adopted. The total storage
requirement for the project area at the end of the design period i.e. 2030 is calculated as 595 m3.
There are already few ground water tanks and will be used for the proposed project. Existing and
additional reservoirs required to cater the demand of year 2030 is given in the table 4 below:
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
105. The 11KV line is available at a distance of 2 km from water intake point, ie Nibuwa river source.
This electric power line shall be provided in each pumping station which shall be converted with
appropriate capacity distribution transformer to TPN 415V/220 V and shall be used to operate pump
and pump station lighting.
106. A Generator facility system is also included in each pumping station as standby.
Number of Pump Sets in each Station:
107. It is suggested to install two pump sets each with ½ capacity (½ of 16 lps) pumping rate, operating
two pumps in parallel for the following reasons:
a) It reduces initial starting current for motor which reduces overloading of transformer in each
start.
b) In normal operation it reduces the effect of water hammering in the pumping main.
c) It requires less diameter accessories, thereby reducing the cost for replacement.
d) When one pump set is out of order 50% of the production capacity remains and there will be
no interruption of water supply. It gives more time for repair. Thus two pumps with ½ capacity
of pumping rate in each station ( total 2*3=6) pumps are proposed.
108. Following power ratings are calculated for pumping stations :
Table 5: Power rating of pumps
Pumping
Stations No
Number of
pumps
Power rating for each
pump (KW)
1 2 30
2 2 30
3 2 34
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Distribution Network:
109. The distribution system comprises of a pipe network consisting of mainly loops and tree branches in
some cases as governed by topography and settlement pattern. The network predominantly contains
HDPE pipes. Altogether 57 km of distribution pipe network is proposed.
House Connections:
110. The system has been designed, predominantly as house to house connections for the design year
2030. However, initially during the construction phase, only 3130 house connections will be provided
to fulfil the need for the base year population.
Fire Hydrants:
111. Altogether 4 numbers of fire hydrants have been proposed to meet the demand of fire extinguishers.
Other System Appurtenances:
112. These will primarily comprise of valve chambers or connector boxes to house inflow control valves
for controlling flow in the pipeline etc. Altogether 71valve chambers and connection chambers are
proposed in the system. Some extra connection chambers have been initially provided so that road
crossings could be avoided during the operational phase.
Pump House:
113. Permanent pump houses have not been provided. As submerged types of pumps are to be used they
shall be kept in the open. Electrical panels however will be housed inside the generator house.
Generator/Operator House:
114. A permanent generator house will be constructed at each pumping station. A permanent space to
accommodate the pump operator will be provided in this generator house.
ii. Environmental Sanitation
115. Components of environmental sanitation are described below.
a. Source Protection works:
116. The town project utilizes various surface sources and thus protection works are required for the
sustainability of the project. The Northern side of the Dhankuta Bazaar (downhill of the Hile market)
has good and dense forests which possesses numerous surface sources. These sources are
groundwater fed streams. These surface sources have been used for drinking water and agricultural
purposes for years. Numerous events of erosion can be encountered in the vicinity of sources as
deforestation is slowly taking place. The following methods are proposed for the source protection
works and these are to be implemented in coordination with the concerned Forest Users Group.
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Wicker Work Fencing:
117. Wicker Work Fencing is very popular in regenerating vegetation. Sproutable branches are put around
the stakes like a fence and the ends of sproutable twigs are put into the soil. The common tree like
(Simali tree) which is adequate in forests of Dhankuta is very suitable for this purpose.
Planting shrubs (Amriso):
118. Amriso (Thysanolaea maxima) is abundantly found in Dhankuta. Leaves are used as fodders for farm
animals and other parts are used to make brooms and are very popular in the country. Planting of this
shrub is also proposed both at upstream and downstream of the sources.
Gabions:
119. Gabions are structures made of stones which are normally set up by manual labour and covered with a
wire mesh to keep them together. Construction of gabions is simple; with proper supervision,
unskilled labours can set up these structures. They are cheap and can be constructed within a short
time stone material which is available in many places at the construction site. The gabion works have
been proposed as check dams and slope stabilizer.
Revegetation:
120. Revegetation work should be carried out with pioneer species (in order to ensure the fastest possible
growth) to stabilize slopes subject to landslides, or as a preventative erosion control measure. When
considering plants for use as slope stabilizers it should be borne in mind that they have strong, deep
roots to bind as much soil as possible. Wherever possible it would be desirable to select species for
afforestation on bare slopes which could be used as fodder or fuelwood trees, since there is a
desperate need for such trees in many developing countries. Ethnic trees like Uttis (Alnus nepalensis),
Simali and other suitable plants are proposed. These works are proposed upstream and around the
sources.
b. Solid Waste Management:
121. Waste management is one of the key issues that have to be addressed to keep the environment clean.
The solid waste rubbish and garbage produced by the community has to be properly disposed off. It
has been observed that most of the inhabitants of the project area (especially Low income - cluster)
are not aware of the problem of solid waste including health and hygiene. The project therefore
proposes to conduct a number of trainings and awareness generating programs. These programs will
help to reduce, reuse and recycle the wastes from the households.
122. As major portion of Dhankuta has a rural setting and people are found to dispose their waste by
making pits in their garden, on site sanitation is suitable in these area. Training programs focusing on
reduce, reuse and recycle of waste will be conducted. Segregation of waste (bio-degradable and non
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
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degradable), composting of degradable waste will be carried out. Similarly kitchen and bathroom
waste water could be managed by developing simple soak pits in the kitchen garden. This is being
practised in the project area, which will make it easier for further dissemination of the practice.
123. A sanitary land fill site is located in Atmara ward no 3 of Dhankuta Municipality and has an area of
47 Ropani (24,000 m2) and is expected to cater 30 years. It was constructed in 2010 AD with the
cooperation of GoN-LGCDP, users group and municipality. Presently 13 staffs are providing day to
day service of managing solid waste.
124. Some houses in the market area are found to collect their waste in bins also. This is a good practice.
For the collection of solid waste from the market area the municipality has engaged a tractor to pick
up the waste. While discussing with the officials of municipality they have requested for a tractor
with trailer for prompt service. Similarly few hand carts (wheel barrows) and collection bins (115 ltrs
capacity) are proposed. Besides training programs shall be conducted regarding solid waste
management to the concerned municipality officials, WUSC members and other members of Tole
Lane Organisations.
c. Wastewater management:
125. As described above most part of the Dhankuta has a rural type of setting. People are found to manage
wastewater by collecting in pits and using for irrigation purpose in kitchen gardens. Even in the
bazaar area wastewater managed in their backyard. In the years to come, however management of
waste water in the bazaar area may be required. But still for some years to come a simple sludge
drying bed will be sufficient. Stone masonry structure with sand and gravel packing (600 mm only) is
proposed. Double layer of plastic sheets of 500 micron thick and 150mm thick clay lining are
proposed to prevent leaking to the earth. Dried sludge can be sold to the farmers as organic fertilizer.
A suction tank (trailer mounted) is also proposed for cleaning septic tanks of individual households.
The cost of sludge drying bed and trailer mounted suction tank is estimated to be Rs 3.0 million.
126. Three steps cascade each with 200 x 200 mm vertical and horizontal constructed with stone masonry
is proposed. Thus aerated effluent produced from sludge drying bed, will gravitates to stone masonry
lined circular soakpits. The outer side of the soak pit will be lined with impervious material (clay and
plastic lining) so as to infiltrate from the bottom of the pit. The soakpit will be packed with brickbats,
limestone, coal and sand in layers. The top of the soakpit will be covered with stone chips/ aggregate.
Twin soakpits with diameter 1.5m and depth 2m have been proposed.
d. Support Activities:
127. As described earlier, the project is community based and involves communities from the inception to
project implementation. As such there is a need of variety of trainings to water users committee
members. Besides, awareness -generating programs have been identified. The project thus intends to
conduct following training and awareness generating programs through a NGO in the project area.
• Health Awareness Campaign • School Health Education Program • Training of Community Motivators • Training of WUSC Members • Solid Waste Management Training • Animal Waste Management Training
128. The above program also includes training to WUSC on matters of finance (fixing of water tariff,
collection of water revenue, accounting etc.) and purely technical aspects (water quality testing,
Initial Environmental Examination (IEE) of Dhankuta Town Water Supply and Sanitation Sector Project
70
I. CONCLUSIONS AND RECOMMENDATIONS
278. The planned water supply and sanitation project for Dhankuta Municipality will have only minor
adverse impacts on the environment which can be easily and with lost costs mitigated through
appropriate mitigation measures and regular monitoring during the design, construction and
operation phases.
279. A significant improvement is expected in personal, household and community level hygiene
practices, and environmental sanitation thereby increasing the quality of life and community
health.
280. No adverse or harmful impacts of any significance are likely and a full scale EIA is not required.
Annex-1: Terms of Reference
SSTWSSSP (Dhankuta Town) TOR for IEE
Table of Contents
1. Organization preparing the Terms of Reference .NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 1
2. Description of the Project .NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 1
2.1. General .NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 1
2.2. Component of the Town Project .NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 2
2.2.1. Water Source .NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 2
2.2.2. Capital Cost of Water Supply Facilities . NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 5
2.2.4. Capital Cost for Sanitation Improvement . NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 6
2.3. Salient Features of the proposed Project . NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 6
2.4. Physical Environment of the Project Area . NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 9
i. Geophysical Profile .NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 9
ii. Ecological Profile .NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 9
iii. Human and Economic Development . NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 11
iv. Land Use Planning .NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 11
2.5. Existing Water Supply Situation .NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 11
2.6. Resettlement, Relocation and Compensation Issue . NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 12
2.7. Relevancy of the project proposal .NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 12
2.7.1. Threshold Limits for Conducting IEE . NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 12
3. Approach and Methodology to be adopted while preparing the report . NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 13
3.1. Public Consultation Program and Public Notice . NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 13
3.2. Data Analysis and Report Preparation .NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 14
4. Policies, laws, rules and manuals to be taken into account while preparingthe report . NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 14
5. Time Schedule for IEE Study .NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 15
6. Anticipated Impact of the Project .NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 15
The Environmental Protection Regulation 1997 (amended in 2007) mentions that a Terms of Reference (TOR) for an Initial Environmental Examination (IEE) is required.
This Terms of Reference (TOR) has been prepared in order to carry out an IEE for Dhankuta Town Water Supply and Sanitation Project in Dhankuta district. The proposed proponent is the Project Management Office (PMO), Second Small Town Water Supply and Sanitation Sector Project (SSTWSSSP) of Department of Sanitation &Sewerage (DWSS), Ministry of Urban Development (MoUD), and Government of Nepal (GoN) is responsible for the preparation of IEE report. Name and address of the proponent is given below:
Name of the Proponent:
Project Management Office Second Small Town Water Supply and Sanitation Sector Project Department of Water Supply and Sewerage Ministry of Urban Development Government of Nepal
The Second Small Town Water Supply and Sanitation Sector Project (SSTWSSSP) has been
designed with the principles of community management, making it demand responsive and adopting a
participatory approach. The project is being implemented under ADB financing in about 20 small
towns where inadequate water supply and sanitation have already affected the health and quality of
life of the people.
The Water Users and Sanitation Committee (WUSC) plays a major role in the implementation of the project. WUSC contributes 50% of project cost of which 5-15% will be in the form of upfront cash and 35-45 % will be in the form of a loan from the Town Development Fund (TDF). 50% of the project cost will be contributed by Nepal Government.
The proposed Dhankuta Town Supply Project is located at the Dhankuta Municipality in Dhankuta district of Koshi zone. The location is 260 58’29.27” North latitude and 870 20’36.51” East longitude having altitude 1169m to 1560m above mean sea level and covers ward no 2 to 7 of Dhankuta Municipality.
Dhankuta Municipality was established in 1979 AD and is situated in Koshi zone of Eastern Development Region of Nepal. It is serving as a regional and district administrative head quarter. The town lies along the Dharan – Dhankuta highway (Koshi highway). The highway, constructed almost
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three decades ago, has enhanced accessibility with terai and other parts of the country. The road is connected to Bhojpur, Tehrathum and Sankhuwasbha district. It is a historical district having the religious and cultural places.
2.2. Component of the Town Project
Dhankuta Town Project under Second Small Town Water Supply and Sanitation Sector Project
(SSTWSSSP) has been promoted to provide safe and reliable water supply with reasonable cost to
the consumer of the town area. The designated service area for the project is the part of ward
numbers 2-7 of municipality. The total area covered by the project is 265.13 hectare.
In some places structures like stream intakes, slow sand filter, roughening filters and reservoirs are in operation. These existing structures are to be utilized. Because of land topography, settlement patterns and existing water supply structures, the project area has been sub divided into four different subsystems, so that each part is served by its own water supply system. These are stated below:
i.) Nigale Subsystem covering part of ward 2 ii.) Schooldanda subsystem covering parts of wards 3 and 4 iii.) Salleri subsystem covering part of wards 5and 6 iv.) Chuliban (Dadagaon) subsystem parts of ward 7
2.2.1. Water Source
a) Source Location, type and required yield
The designated sources to serve the service area are existing surface sources namely Tindhobhane
source, Aitabare and Lungdang as gravity sources and combination of Nibuwa and Tankhuwa stream
has pumping scheme.
Location of existing major three sources are situated in ward no 1, almost 13 Km north of Dhankuta
Bazaar. Nibuwa stream is located at eastern boarder of the municipality. 10 lps of water from
Tankhuwa stream, which lies at 6.8 km distant from Nibuwa, will be collected. A Pumping
Transmission main requiring 2.2 km in length and 665 of head is to be developed from Nibuwa stream.
Table 2.1: Expected yields of proposed sources
S. No. Source Type Expected Discharge (lps)
Remarks
1 Chuliban Gravity 1.17 In Operation 2 Aitabare Gravity 2.07 In Operation 3 Tindhobhane Gravity 5.22 In Operation 4 Nibuwa + Tankhuwa Pumping 16.0 Proposed
Total 24.46
Nigale and School danda subsystem will be catered by Chuliban and Aitabare sources respectively.
These existing gravity sources are yielding 1.17 and 2.07 respectively.For monsoon season the entire
system will run from these gravity sources. A pipe to carry additional discharge from Aitabare WUSC
has already been laid to discharge 4 lps in monsoon season and is in operation.Considering the
scarcity of water in dry season 10 lps of water from Tankhuwa, down at the bank of Nibuwa will be
collected. The total of 16 lps will be pumped jointly from Tankhuwa and Nibuwa. Both of these are
water fed streams and are perennial.
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b) Reservoirs , storage tank
The total storage requirement for the system at the end of design period i.e. 2030 is calculated as 595 m3 for Dhankuta. There are already few ground water tanks and will be used for the proposed project. Existing and additional reservoir required to cater the demand in 2030 is given in the table below:
Table 2.2: Required Reservoirs
S.No. Subsystem Reservoir
Sizes (m3 )
Type
Existing/Proposed Area to be
distributed
1 Nigale 20 Ground
Reservoir
Existing Tallo sifting
20 do Existing Mathillo sifting
20 do Existing Syaule
20 do Proposed Syaule
2 School
Danda
Subsystem
50 Do Existing Amaltar, Adhikari
Basti etc.
20 Do Existing Tallo Atmara
20 do Existing Mathillo Atmara
3 Salleri
SubSystem
300 do proposed Main bazaar etc.
4 Chuliban
SubSystem
125 do proposed Dadagaon, Madan
chowk etc.
TOTAL 595
c) Transmission mains
The existing gravity sources are in a distance of about 13 km from the bazaar. For these sources
about 41 km of transmission mains are in operation. Though these are GI (Chuliban Source) and
HDPE (other two sources) are functioning well. Other required is from Tankhuwa to Nibuwa from
where water collected down to Nibuwa. HDPE pipes of 125 mm size of class 6 Kg/cm2 is proposed.
From Nibuwa River to Schooldanda where 665 pumping head is needed, GI pipes of size 150 mm is
proposed as the site bears steep slope and rocky zone. Most of the pipe line shall be above the
ground and suitable support pillars shall be provided.
d) Treatment facilities
There already exists conventional filter plant (Slow Sand Filter - SSF). Considering the workmanship,
and technical knowledge conventional treatment have been designed accordingly and consist of
sedimentation tank, slow sand filter and disinfecting unit. The existing SSF is located at School danda
with the capacity of 18 lps has been used. Similarly other two treatment units with the capacity of 2 lps
are also required. The following table summarizes the capacity required
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Table 2.3: Treatment units: capacity and numbers required
S.No Sub system Source type Treatment type Numbers
1 Nigale Gravity SSF 2 lps required
2 School danda Gravity SSF 2 lps required
3 Salleri Gravity SSF 15 lps
existing
4 Pumping 16 lps ( Roughing
filter, proposed
To be constructed
Existing SSF at school
dada will be utilized
e) Electrical Facilities/Pumps
The 11 KV line is available at a distance of 2 km from water intake point, ie. Nibuwa river source.
There is no problem and constrain to get power from main line. As discussed above 11KV high tension
electric power line shall be provided in each pumping station which shall be converted with appropriate
capacity distribution transformer to TPN 415 V/220 V and shall be used to operate station lighting.
Generator Facility system is also included in each pumping station.
f) Distribution main
The distribution system consists of pipe network, which are lopped in most of the cases, and branched for some. The network has been analyzed using EPANET – 2 computer program that performs extended period simulation of hydraulic and water quality behavior within pressurized pipe networks. It is one of the recent and quite popular water supply program software. The algorithm was originally developed by the Water Supply and Water Resources Division, Cincinnati, USA. The program contains commands for graphically laying out an existing or proposed pipe distribution network and performing a hydraulic analysis on that network. EPANET – 2 allows users to layout a water supply system from an Auto Cad drawing. The input elements include pipe, node, reservoir, valve and pumps. The system has been analyzed by the Hazen- Williams equation. The pipe network has been designed for ultimate scenario ie considering domestic demand as 65 lpcd. The reports include pressure, flow rate, flow velocity and hydraulic grade.
The entire system has been designed using High Density Polythene (HDP) pipes. The minimum pipe
size used is 50mm. Altogether 57 km of distribution pipe network is proposed.
g) House Connections
The system has been designed, predominantly as house to house connections. Presently 1650 households are having piped water. Initially during construction phase, only 3130 house connections are provided to satisfy the need for the base year population.
h) Appurtenances
These will primarily comprise of valve chambers or connection chambers to house in flow control valves for controlling flow in the pipeline and to the community / shared taps etc. Altogether 130 pipe valves covers and 37 valve chambers are designed in the system. Similarly, 35 numbers of connection chambers have been provided in places of dense population. The individual house connections will be tapped from these connection chambers provided at appropriate places, so that there is least number
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of road cuttings during operation phase. The location of these chambers will be determined during the construction in consultation with WUSC. Refer Drawing for a typical house connection chamber.
i) Pump House
Permanent pump houses are not provided as submersible pumps are proposed. Electrical panels are however are housed inside generator house.
j) Generator/operator House
Three permanent generator/operator house for pumping scheme shall be constructed which will house in control panels, switch boards, water level sensor devices including room for operator. These are required for smooth operation and monitoring the system. Similarly a permanent generator room to accommodate the generator has been provided. In case of failure of power supply the generator shall be used to supply power to the pumps. Refer Drawing for details.
k) Store and Laboratory Building
A chemical store and laboratory building to house in requisite stores and small testing laboratory has been included in the project. Existing office building will be used for these facilities.
2.2.2. Capital Cost of Water Supply Facilities
The total project cost for water supply component of the proposed water supply project has been
estimated to be Rs. 268.714 million. Physical contingency @ 5%, price contingency @10% and VAT
@ 13% are all included.
2.2.3. Sanitation Improvement
a) Solid Waste Management
Waste management is one of the key issues that have to be addressed to keep the environment clean.
It has been observed that most of the inhabitants of the project area are not aware of the problem of
solid wastes including health and hygiene. The project therefore proposes to conduct a number of
training and awareness generating programs.
People are found to dispose their waste by making pit in their garden,on site sanitation program is
suitable for these area. Training program focusing on Reduce, Reuse and Recycle of waste will be
conducted. Similarly kitchen and bathroom waste water could be managed by developing simple soak
pit in the kitchen garden.
A sanitary land fill site is located in Atmara ward no 3 of Dhankuta Municipality has an area of 47Ropani (24,000 m2) of land and is expected to cater 30 years. It was constructed in 2010 AD with the cooperation of GoN-LGCDP, users group and municipality.
For the collection of solid waste from market area municipality has engaged a tractor to pick up the
waste. Similarly, few hand carts (wheel barrows) and collection bins (115 ltrs capacity) are proposed.
b) Waste water Management
People are found to manage waste water by collecting in the pit and using in irrigation purpose for
kitchen garden. Within years to come, however in the bazaar area management of waste water may
be required. But still for some years to come a simple sludge drying bed will be better. Stone masonry
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structure with gravel packing is proposed. Gravel packing will enhance to percolate moisture and dry
sludge quicker. Dried sludge can be sold to the farmers as organic fertilizer.
While drying sludge leachate is produced and thus a lined circular soak pit has been proposed to
manage the same. The outer side of the soak pit will be lined with impervious material (clay + plastic
lining) so as to infiltrate the water from the bottom of pit. Soak pit will be packed with brickbats,
limestone, coal and sand in layers. Top of the soak pit will be covered with stone chips/ aggregate
2.2.4. Capital Cost for Sanitation Improvement
The total cost on the sanitation component has been estimated to be Rs. 13.434 million including VAT.
2.3. Salient Features of the proposed Project
S.NO. Items Description
1 Name of the Project Second Small Town Water Supply & Sanitation
Sector Project, Dhankuta Town Project
2 Type Gravity &PumpingScheme
3 Study Level Detailed Engineering Design Report
4 Location Area
Region Eastern Development Region
Zone Koshi
District Dhankuta
VDC/Municipality Municipality
Ward 2 to 7
5 Available Facilities
Road Koshi Highway
Airport Biratnagar, Morang
Water Supply System
Existing
Piped system & stream, springs
Electricity Available
Communication Available
Health Services Available
Banking Facilities Available
Biratnager- Dhankuta Distance 85 Km
6 Source Characteristics
Source Name Nibuwa & Tankhuwa (proposed for Pumping
Scheme) (stream intakes)
Other spring sources for gravity system : Aitebare,
Tindobhane, Lungdang (in operation)
Source Type Surface sources
Source Location Ward # 1 for Gravity and
Ward # 5 for Nibuwa and Tankhuwa VDC for
Tankhuwa Stream
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S.NO. Items Description
Tapped yield (lps) Gravity :8.46 lps
Pumping from Nibuwa : 16 lps
Pumping Head 665 m
Pumping Head 665 m
Pumping hours: 19 hrs @ 16 lps
Pumping station 3 nos 50 m3 reservoir for initial stage and 20m3
reservoir in other two stations
Pump type Submersible type 32 HP each with
2 # 32 HP in operation in each pumping station
Total Number of pumps Total 6 # of pumps (32 Hp) for transmission mains
Storage Tank Existing 20 m3 ground reservoir in Tallo Shifting
Existing 20 m3 ground reservoir in Mathillo Shifting
Treatment Unit Existing Conventional Treatment Plant with
Sedimentation, SSF and Chlorination
Grit-chambers, Sedimentation, Roughening filters
are proposed using existing SSF at Schooldanda
for pumping scheme.
8 Social Status
Present Population (2012) 15,139
Base Year Population (2015) 16,169
Design Year Population
(2030)
22,475
Adopted Growth Rate % 2.22 (Average)
Household Numbers (2012) 3130
Average Family Sizes 4.84
9 Total Water Demand
Base year 2015 (m3/day) Total 1,270.73
Design year 2030 (m3/day) Total 1,766.31
10 Total Cost of the Project (NRs.) 282,148,471.72 with 15% contingencies & 13%VAT
Water Supply Sector NRs 268,714,040.59
Sanitation Sector NRs 13,434,431.13
Sanitation Components
a) equipment for Solid waste
management
NRs 1,635,000.00
b) Sludge Drying bed & Sludge
Suction Tanker mounted on
trailer
NRs 2,901,542.00
c) Bio engineering works including
plantation, wicker works etc
NRs 6,202,990.00
d) Gabion protection works NRs 1,149,345.00
11
Cost Sharing Arrangement for
water supply component (NRs)
268,714,040.59
a) GoN / ADB @ 50% NRs 134.357 million
b) WUSC Contribution
c) Users contribution @ 5% to 15 % NRs 13.44 to 40.31 million
d) Loan through TDF @ 35% to 45% NRs 94.05 to 120.92
12
Cost Sharing Arrangement for
Sanitation component (NRs)
NRs 13,434,431.13
a) ADB/ GON NRs 11.42 million
b) Local body /users etc.
NRs 2.014 million
13 Tariff ( at TDF 45 % financing) Rs. / Cum
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S.NO. Items Description
0-10 Cum / month 52.00
11- 20 Cum / month 78.00
>20 cum / month 91.00
14 Economic / Financial
FIRR 2.95 %
EIRR 95.84 %
AIEC 74.82
AIFC 60.61
15 Environment
ADB Category Category B
IEE finding No adverse effect, IEE required
16 Project Status
Started January 2012.
2.4. Physical Environment of the Project Area
i. Geophysical Profile
Topography, Geology and Climate:
Dhankuta Municipality is located at 26o 58’ 29.27” latitude and 870 20’36.51” longitude having altitude 1169 m to 2037m above mean sea level. Geologically, Dhankuta is in the Mahabharata range which has gneiss, granite gneiss, quartzite schist etc. as a rock type. Quartzite occasionally with limestone is also found. Structurally, the area is folded, faulted, and fractured
Being located in the middle in the mountain the climate is essentially warm temperate, sub-tropical. The temperature is mild both in summer and winter. The temperature varies from 20C in January and 340C in June. Average annual precipitation is expected to be 900mm. In the monsoon period at the months of June –August 75% of the rainfall occurs.
Surface and Ground Water:
The proposed project area is situated in between three rivers these are known as Tamor River, Nibuwa and Patle River. These are perennial and Tamor is the main river which flows from west boundary of Dhankuta municipality. Besides numerous perennial streams viz, Devikhola, Sisne Khola, Charchare, Raniban, Juke, Aitabareetc. are being used for the distribution of water.
ii. Ecological Profile
Flora, Fauna and Protected Areas:
Deforestation has decreased the flora of the project area but since the concept of community forests has been introduced, there has been an improvement in the forest cover. A forest area is on the south, west and north east portion of the Project area, and predominantly consists of Pine wood, Chilaune, Uttis, Karma and Shag. Wild animals like Monkeys, leopard, panther, and deer along with other animals are sometimes found in these forests. Common birds as house sparrow, peacock, crow, and jungle fowl are some of the bird species seen in the area.
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Geo Hydrology
There are many small surface perennial sources in the area. The water is oozing out from springs. It indicates the presence of weak zone in the area. This weak zone may be in the form of faults, joints or fractured rocks as reported in the survey report of Department of Mines and Geology (DMG).
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iii. Human and Economic Development
Population, Communities and Occupation:
The population of the project area is 15575 with the total number of households as 2567.The ethnic composition consists of Janajati and Brahmins/Chhetries. The dalit caste (Kami, Damai and Sarki) also shows their effective presence in the project area. The principle occupation of the people is agriculture. 44% of the people are engaged in agriculture followed by 31% business and 19% in service sector.
Health and Sanitation:
Almost all the households of the project area have latrines. There is linear storm water drainage exists in market area but rest of the service area does not have drainage system. The general communicable diseases are common. General health conditions of the females are observed bad compared to the males.
Economic Characteristics:
No specific area has been designated for industries. There are a few small scale industries as biscuit factory, rice mills, hotels and lodges. Agriculture is the main characteristics, the main product being cardamom, ginger and Amriso. Cash crops like green vegetables are also widely produced. Horticulture and livestock rising including poultry is practiced but not in a commercial scale.
Infrastructural Facilities:
Project area is a part of Dhankuta municipality. It lies in the Koshi Highway connecting to Biratnagar, Sankhuwasbha, and Bhojpur.The project area has 13 km metaled road and 26 km of earthen road and 4 km of trail road. Most of the institutions and some private owners have telephone connections. It has electricity facilities and is connected to the 132 kV substation. There are 12 academic institutions in the service area. There are 22 government, semi government, and NGO and non-government offices.
iv. Land Use Planning
A land use planning specially for the Government offices can be observed. Up to a certain extent zoning and bylaws are found to be implemented by office of municipality.
2.5. Existing Water Supply Situation
A system of 7 public stand posts of water supply was built during the Rana regime (before 1930),
whose intake source Sawa Khola is located at the foot of Hile Bazaar, 10 km far from Dhankuta
Bazaar and is still functioning. Later in 1980, the system was upgraded to 115 taps by DWSS, colleting
water from various other sources. This was further improved in 1994 by the grant aid of British
Government. The existing Dhankuta Water Supply system was constructed with the cooperation from
UK/India/S. Korea/DWSS/WUSC/Users in different period of time.
Almost 34 numbers of reservoir/distribution tanks are functioning in the town. But, most of them have
smaller capacity of 3 m3 – 8 m3, leaking and are in deteriorating conditions. Thus, the present Water
Supply and Sanitation situation for most of the project area is not satisfactory. Presently WUSC is
serving with 1650 private and 48 community taps and there is serious shortfall of water supply. Many
households does not have piped water supply as WUSC has stopped providing new connections since
2004.
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The most of the water quality parameters of the proposed sources are within the standard set by
NDWQS, 2062 but some are not within the standard. Thus raw water is not suitable for drinking
purpose and requires treatment. The water quality is expected to worsen in the rainy season due to
increase in runoff of the sources with increased in suspended solids, turbidity and dissolved minerals.
2.6. Resettlement, Relocation and Compensation Issue
There shall be not any relocation and resettlement of the local people. Thus, no compensation issues
need to be considered.
2.7. Relevancy of the project proposal
Any development project have some environmental implication, whether beneficial or adverse. Therefore, it is pertinent to identify the complications/changes apparent in the environmental condition along with the favorable or adverse impacts resulting from the activities associated with the project over the physical, biological, socio-economic and cultural environment of the project area. Similarly the assessment of the magnitude of the impacts is also equally important. The assessment techniques and methods to be adopted may however vary depending upon the nature of the project.
In recent years, environmentally sustainable development has become one of the major challenges faced by different development institutions. Accordingly, the Ministry of Environment, Science and Technology, GoN has introduced a variety of instruments into the country’s development activities. IEE is one of the tools for the environmentally sustainable development.
Taking in view of the statutory requirement of GoN, adhered to for the environmental assessment of any development projects under EPA-2053 & EPR-2054, an IEE study is necessary and thus TOR is prepared. The Schedule – 1 of EPR states to conduct IEE Study:
2.7.1. Threshold Limits for Conducting IEE
For Drinking Water Supply Project ,according to Environmental Protection Guidelines, 2054 BS, First Revised (2055 BS) Schedule -1 (Clause G. Drinking Water), IEE is required for following condition :
Particulars Status for proposed Dhankuta Town Project
1) Collection of rain- water in not more than 200 hectares, and use of water sources (springs and wetlands) located within the same area.
Not applicable
2) Surface water sources with not more than 1 cubic ft. safe yield and supply of not more than 50 percent of the water during the dry season.
Not applicable
3) Processing of water at the rate of 10 to 25 liters per second.
Within limit
4) Recharging up to 50 percent of the Not applicable
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total aquifer for the development of underground water source.
5) Construction of not more than one
kilometer long tunnels for carrying water
Not applicable
6) Displacement of not more than 100 persons for operating a water supply scheme.
Not applicable
7) Settlement of not more than 500 persons on the upper reaches of water sources
Not applicable
8) Supply of drinking water to population ranging between 2000 and 20000
Within limits
9) Supply of drinking water to a population ranging between 10,000 and 100,000 upon connecting new sources.
Within Limits
10) Installation of more than 20 kilometers long electricity transmission lines for pumping or processing water and consumption of more than one MW of electricity.
Not applicable
11) River training and diversion activities over an area of more than one kilometer.
Not applicable
For Drinking Water Supply Project: IEE is required for the water supply scheme having population between 10,000 – 100,000. Population of the project falls in the strata. Further this is an extension of existing system. Service areas have been added and new sources are to be tapped. Further no people will displaced with the construction / operation of the project. Thus the IEE study has to be carried out.
3. Approach and Methodology to be adopted while preparing the report
3.1. Public Consultation Program and Public Notice
Public consultation program in the project area will be organized to inform the broader communities and to collect the feedbacks and suggestions regarding the issues. This program mainly focus on the awareness about the project plans and programs, building of mutual consensus about the implementation of the project, identification of the key issues to be considered during IEE study and project design.
The proponent will affix a notice in the office of Dhankuta Municipality and other ward offices, Office of the DDC, schools, hospitals, health post requesting the concerned authorities and individuals to offer their written opinion and suggestions within fifteen days with regard to the possible impact of the
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implementation of the proposal on the environment. The notice will also be published in the national daily newspaper. Deeds of the fixing of notice from the concerned offices will be collected and included within the report.
3.2. Data Analysis and Report Preparation
The data collected shall be analyzed to identify both the negative and positive impacts of the project on the existing environment. During this stage, the socio-economic profile prepared by the NGO shall also be considered for further verification before finalization and identifying and predicting the possible impacts both the adverse and beneficial. The consultant will submit the IEE Draft report within 45 days after approval of TOR. The draft IEE report will be presented to WUSC, local body representative etc. The consultant will incorporate the comments and suggestion made by PMO and WUSC. The consultant will submit the final IEE report within 7 days after receiving comments from PMO.
The proponent shall submit fifteen copies of the proposal to the concerned Ministry (MoUD) in accordance with Rule 10 of the EPR, 1997 for the approval of the proposal.
4. Policies, laws, rules and manuals to be taken into account while preparingthe report
The IEE should also be conducted in compliance with the following Policies, laws, Acts, Regulations, Standards and Guidelines:
Policies:
i) Rural Water Supply and Sanitation National Policy, Strategy and Action Plan 2060 B.S. (2004 AD)
ii) Water Supply and Sanitation National Policy and Strategy 2060 B.S. (2004 AD) iii) Urban Water Supply and Sanitation Policy 2066 B.S. (2009 AD) iv) ADB's " Safeguard Policy Statement (SPS) " 2066 BS ( 2009 AD)
Acts and Regulation:
i) National Park and Wild Life Conservation Act 2030 BS (1974 AD) ii) Land Acquisition Act 2034BS (1978 AD) iii) Soil and watershed Area Conservation Act 2039 BS ( 1983 AD) iv) Labour Act 2048 BS ( 1992 AD) v) Water Resources Act, 2049 BS (1992 AD) vi) Forest Act 2049 BS (1992 AD) vii) Forest Regulations 2050 BS ( 1993 AD) viii) Environmental Protection Act, 2053 BS (1996 AD) ix) Environmental Protection Regulation, 2054 BS (with Amendment) x) Local Self Governance Act 2055 BS (1999 AD) xi) Aquatic Animals Protection Act 1961 and First Amendment 2055 BS (1999 AD) xii) Local Self Governance Regulations 2056 BS (2000 AD) xiii) Child Labour prohibition and Regulation Act 2056 BS ( 2001 AD) xiv) Water Supply and Sanitation Regulation 2062 BS (2005 AD)
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Standards and Guidelines
• National EIA Guidelines 2050 B.S. (1993 AD) • National Drinking Water Quality Standards 2062 B.S. (2005 AD) • Water Resources Strategy , 2055 B.S. (2002 AD)
5. Time Schedule for IEE Study
Time schedule envisaged for the IEE study is as follows
Duration: Within Two months of the approval of TOR.
Proposed Schedule of work for IEE Report Preparation
Budget: Estimated budget for this IEE study is Rs. 2,00,000.
5.1. Resource Persons
Following inter-disciplinary human resources will be engaged with the co-ordination of team leader. The team mainly consists of:
i. Environmental safeguard specialist ii. Water Supply Engineer iii. Sociologist/Social Safeguard Specialist iv. Hydrologist/Geo-hydrologist v. Botanist
6. Anticipated Impact of the Project
A distinction shall be made between the potentially significant positive and adverse impacts and immediate and long term impacts. Impacts that are unavoidable or irreversible shall be identified.
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Where ever possible, the significant impacts shall be quantified in terms of environment costs and benefits.
The impacts shall be identified mainly for the activities pre-construction and post construction (O&M) phase on the existing physical, biological and socio-economic resources.
As a part of the study, enhancement of the positive impacts shall also be carried out. The potential impacts that shall be assessed are grouped into three major impacts as follows:
6.1. Physical Impacts
Land: The possible changes in the land use pattern of the area shall be studied giving focus to landslide, erosion, and environmental aesthetics degradation.
Water: The possibility of negative impacts on surface water, ground water, wastewater problems and obstruction to natural drainage shall be studied carefully. Apart from this, the study shall also focus on the source dispute and water use conflicts if exist.
Air & Noise: The deterioration in the ambient air quality and noise & vibration disturbance during the construction and operation phases shall be studied to recommend the mitigation measures.
Soils & Geology: The degradation in the soils and geological status of the project area due to the project and its associated activities shall be studied. The consequences of the erosion and landslides due to the project shall also be studied.
Hydrology: The modification that will be brought by the implementation of the project in the river hydrology will be studied along with the consequences (adverse or positive) resulted from the project. In addition, the riparian flow as well as minimum discharge of the river /water source after abstraction of the design flow will be studied in accordance with the requirements of the environmental flow envisaged by the acts and regulations.
Others: Other parameters, if any, such as: quarry site impact, spoil disposal impact, waste materials disposal impact etc., identified during the study shall be incorporated in the report. In addition to this, cumulative impacts shall also be considered during the identification of the impacts of the project on the natural settings of the environment.
6.2. Biological Impacts
Flora (Forest & Terrestrial Vegetation): Change in forest cover/forest clearance, extinction of rare and endangered species of floral species, timber exploitation, firewood extraction etc. due to the project shall be studied to assess the losses to the vegetation and to suggest suitable mitigation measures.
Wildlife and Terrestrial Fauna: Change in the terrestrial wildlife, avi-fauna and aquatic life including fish, extinction of rare and endangered species, loss of habitat, sensitive habitat, migratory routes, construction disturbances, hunting and poaching by workforce, destruction of spawning and rearing of ground of fish, impact on fishermen etc. due to the project shall be suitably incorporated in the IEE report.
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Others: Other parameters, if any, such as permanent disturbances to the vegetation coverage, local wildlife etc. identified during the study shall be incorporated in the report along with their cumulative effects on the environment.
6.3. Socio-Economic and Cultural Impacts
The socio-economic and cultural impacts can be wide ranging in their nature. So the study shall incorporate the factors like; occupational health and safety impact, Health and sanitation impact, land acquisition and compensation impact, Impact on women and vulnerable, impact on local economy, migration problem, resettlement & rehabilitation problems, change in land use pattern, change in nearby land values, slum creation hazard, impact on education, encroachment of cultural sites, law and order problem, generation of employment, impacts due to influx of workers and resulting cultural differences hazards.
While preparing the report any issues / impacts found relevant will be included in the report, besides
the issues /impacts mentioned in this TOR
7. Analyses of Alternatives to the Proposed Project
The alternative analysis of the project shall be conducted during the study to minimize the possible negative environmental impacts. Alternative measures to the proposed project to meet the same project objectives will have to be described in following aspects:
• Project Location (setting) • Design • Technology choice • Construction techniques • Operation and Maintenance.
Alternatives in terms of potential environmental impacts, capital and operating costs and institutional training and monitoring requirements should be described. Costs and benefits of each alternative should be quantified (wherever possible); incorporating the estimated costs of any associated mitigation measures.
8. Mitigation Measures
Suitable, cost effective and environmentally friendly mitigation measures shall be recommended during the preparation of IEE report for all the perceived impacts to minimize the environmental impacts of project implementation. In general the following area shall be covered while preparing mitigation measures:
i. Project design and preparation Phase
ii. Project construction phase
iii. Project operation and maintenance phase
In general the following impacts are expected, which will be addressed in IEE report in detail.
1. Environmental problems relating to project sitting/ project location phase:
- Encroachment to private/ public property - Disturbance of cultural resources, historic sites, vegetation, wetland, surface
draining, and wildlife - Land use or location conflicts - Conflicts in water allocation
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- Conflicts due to inadequate compensation if private land is use.
2. Environmental problems relating to project planning and design phase:
- Degradation of areas through repeated access and increased use - Securing physical access to site - Demolition and disposal of existing structures - Degradation of surface waters by soil erosion from distributed areas - Discharge of drilling slurries and produced waters - Waste equipment servicing and sanitary and domestic wastes - Taking of test borings within proposed rights of way - Clear cutting and disposal of vegetation - On-site transport of materials and storage of materials and supplies - Controlling over-extraction of groundwater and runoff damages - Adequacy of primary water treatment plants installation - Quality of water pipes laid down in distribution system - Securing safe water and planning of adequate excess drainage discharge
system.
3. Environmental problems relating to project construction phase:
- Runoff and sedimentation from grading for track roads and alteration of hydrological patterns due to maintenance roads
- Loss of land use and population relocation disturbances due to placement of pipes, construction materials and substations
- Secondary development of shops, temporary sheds and trails during construction generating waste in surrounding area.
4. Environmental problems relating to project operation phase:
- Increased demands on services and facilities in local communities - Social and cultural conflicts concern with water distribution, excess water
discharge and maintenance - Use of local surface water or groundwater - Contamination of groundwater and detection of water borne diseases - Detection of chemical contamination such as Arsenic, Iron, Nitrate etc. in water
causing additional costs incurred in the removal of hazardous chemicals.
Concerned agencies like SSTWSSSP, DWSS, WSSDO and local agencies, local administration office shall be consulted during the implementation of mitigation measures.
9. Matters to be monitored while implementing the Project
9.1. Environmental Management Plan
The project proponent has to develop an Environmental Management Plan (EMP) to systematically manage all the perceived environmental impacts of the project. It shall be therefore based on the mitigation measures for the project induced impacts. An Environmental Management Plan (EMP) has a dual purpose. It is designed to monitor the contractor's work during project implementation. It helps to check contractual compliance with specified mitigation measures. It also helps in making periodic checks on the actual environmental impacts of the Project over the years following completion of the works, and compares these with those impacts anticipated at the time of Project appraisal. The EMP therefore provides the necessary feedback required for correcting potentially serious Project deficiencies, and for planning of other projects.
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The EMP shall include the responsibilities of different stakeholders based on preliminary plans and schedules. This program shall include measures required during the project design, construction and operational phases and shall include recommendations on allocation of components of the EMP to the various parties involved. Feasible and cost-effective measures to prevent/mitigate/reduce significant negative impacts should be recommended in an Environmental Management Plan. The impacts and costs associated with implementing the measures will have to be detailed. The EMP will include proposed work programs, budget estimates, schedules, staffing and training requirements, and other support services to implement the mitigating measures.
9.2. Environmental Monitoring Plan
The project will develop Environmental Monitoring Program for the pre-construction, construction and post construction activities of the project. The program will evaluate:
(i) the extent and severity of the adverse environmental impacts as compared to what was predicted, (ii) how effective the mitigating measures were and compliance with the regulations and (iii) overall effectiveness of the EMP.
The environmental monitoring of the project includes field supervision and reporting of project activities prior to and during the project construction and operation in order to ensure that the works are being carried out in accordance to the approved design and that the environmental mitigation measures are fully implemented in accordance with the EMP.
The DSC will prepare progress reports on EMP implementation and submits to relevant agencies on regular basis. The WSSDO Dhankuta willsupervise the environmental monitoring activities undertaken by DSC.
Monitoring of the mitigation measures during the construction and operation phase will be mainly considered the impacts of followings:
a) Construction Phase:Soil erosion, sedimentation and slope stabilization; spoil-tip protection and management; stock taking of species of urban vegetation during vegetation clearance along pipeline alignments and re-plantation; change in hydrology and morphology of streams and rivers; water, air and noise (vibration) pollution; solid waste; land intake and compensation; reinstatement of damaged structures and services; crime and community stress; health, safety and sanitation of the work force and camps; archaeological and cultural sites and chance finds; and traffic management.
b) Operation Phase:Discharge of water during plant maintenance, leakage, backwash, treatment operations; silt disposal; quality of drinking water supplies; pipe flushing.
Monitoring mechanism: The monitoring mechanism during construction will be of regular type whereas baseline monitoring, compliance monitoring and process monitoring shall have to be done during the operation and maintenance phase. The monitoring team shall visit the project site and monitor the effectiveness of the implementation of mitigation measures.
9.3. Information Disclosure, public Consultation and Participation
Public consultation is the process of exchanging information with those persons and organizations with alegitimate interest in a project and/or who are likely to be affected by the project (stakeholders). It is a two-way process that informs and involves the community in developing a project, and informs the proponent about issues and concerns, which can then be addressed in project design. Information disclosure involves
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stakeholders in monitoring the developmentand implementation of a project and fosters openness in decision-making by presenting documents and other project materials for public scrutiny.
The consultation and disclosureinvolves consultation with stakeholders at an early stage of project preparation, and throughout project implementation. As a minimum, stakeholders will be consulted regarding the scope of the environmental study before work has commenced in earnest, and should then be informed about the likely impacts of the project and proposed mitigation once the draft IEE report is under preparation. The report should record the views of stakeholders and indicate how these have been taken into account in project development.
Information is disclosed through public consultation and more formally by making documents and other materials available in a form and at a location in which they can be easily accessed by stakeholders. This normally involves making draft reports available (in the local language) at public locations in the community and providing a mechanism for the receipt of comments and making documents available more widely.
Public consultation and involvement should be given highest priority in the implementation of mitigation measures. Public consultation should take place and on the basis of decision of the consultation meeting, implementation of mitigation measures should be prioritized and should be carried out with the involvement of the local people.
Monitoring is one of the components of EMP. The results of monitoring should also be disclosed in the form of demonstration, charts, figures, graphs, and samples, etc. to the local people, school students and other interested stakeholders. In the process of compliance monitoring of the project construction, local people and construction workers should be consulted.
9.4. Grievance Redress Mechanism
The WSSDO Dhankuta will be responsible to address the issues and problems raised by the local communities regarding the loss of assets, water and sanitation etc. during the implementation of the project. The WSSDO shall ask the Environment Specialist of the DSC to assist in the handling of grievances and the community level stakeholders should be encouraged to help in the handling of grievances at the project sites.
The affected person / community will submit grievances / complaints to the Water Supply and Sanitation Division Office (WSSDO). The WSSDO will try to solve the grievance at the project level. If thegrievance cannot be solved at the project level, WSSDO will forward it to Director General (DG)'s Office at Kathmandu through SSTWSSP.
10. IEE Report Contents/Format
IEE report shall be prepared as per this TOR and shall be submitted to MoUD through SSTWSSSP. The basic format of the report will be in accordance with the EPR, 1997 and National EIA Guidelines, 1993. Land use map of location sites, letters obtained from the stakeholders in response to public notification, and the newspaper cut piece of public notification and no objection letter from district office will be included in the IEE report. Similarly, wherever applicable maps, photographs, tables and matrix shall be presented. The format for the IEE report should include, but not limited the following:
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A. INTRODUCTION 1. Purpose of the report
2. Basis and extent of the IEE study a. ADB policy
b. National Act and Rules
c. Policies and Legal framework of KUKL
d. Objectives and Scope of the Environmental Study
e. Approach and Methodology
B. DESCRIPTION OF THE PROJECT 1. Existing Water Supply, Sanitation and Drainage Infrastructure
a. Water Supply
b. Sanitation
c. Drainage
2. Type, category and need of the subprojects
3. Size or magnitude of operation
4. Proposed schedule for implementation
5. Description of the subprojects
Table: Components of Subprojects
Infrastructure Function Description Location
C. DESCRIPTION OF THE ENVIRONMENT 1. Physical resources
a. Topography
b. Geology and Soils, Seismology
c. Climate and Air quality
d. Water resources
e. Surface water and quality
f. Groundwater and quality
2. Ecological Resources
a. National Parks and Protected areas
b. Forests (including rare or endangered species)
c. Flora
d. Fauna
e. Fisheries/Aquatic biology
3. Social and Cultural Resources
a. Population and communities
i. Health facilities
ii. Educational facilities
b. Socio-economic conditions (community structure, family structure, social well-being)
c. Physical or cultural heritage
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d. Employment
e. Slums and squatter settlements
4. Economic Development and Prospects for Growth
a. Land Use
b. Infrastructure
i. Transportation
ii. Drinking Water Supply
iii. Surface Drainage, Sanitation and Sewerage
iv. Electricity
v. Communications
c. Economic Characteristics
i. Industries
ii. Agricultural development
iii. Mineral Development
iv. Tourism Development
v. Developmental Organizations
vi. Major Environmental Problems
d. Health and Sanitation
D. ANTICIPATED ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES 1. Pre-construction Phase
a. Environmental Impacts due to project design
2. Construction Phase
a. Environmental impacts due to project construction
i. Physical environment
ii. Biological Environment
iii. Socio-economic and Cultural Environment
Compensation and rehabilitation per the resettlement Plan (RP)
Reinstatement of damaged community services and infrastructure
Influx of outside workforce, money and unwanted activities
Health and Safety
i. Occupational Health and Safety (OHS)
ii. Community health and safety
Dislocation of archaeological artifacts
Traffic management
3. Operational Phase
Residual Impacts
Potential Environmental Enhancement Measures
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Trans-boundary and Cumulative Impacts
E. ANALYSIS OF ALTERNATIVES WITH AND WITHOUT PROJECT SITUATIONS
F. INFORMATION DIDCLOSURE, CONSULTATION AND PARTICIPATION
G. GRIEVANCE REDRESS MECHANISM
H. ENVIRONMENTAL MANAGEMENT PLAN (EMP) 1. Environmental Management Plan and Objectives
2. Monitoring and Mitigation Plan
3. Implementation Arrangements
a. Environmental Procedure and Institutions
b. Reporting Procedures
c. Procurement plan and environmental monitoring and mitigation cost estimates
d. Project Implementation Schedule
I. CONCLUSION AND RECOMMENDATION
While preparing the report any issue / impacts found relevant will be included in the report, besides the issues /impacts mentioned in this TOR
The proponent shall submit fifteen copies of the final IEE Report of this project to the concerned Ministry (MoUD) in accordance with Rule 10 of the EPR, 2054 (1997)
Annex-2:
Rapid Environmental Assessment
SSTWSSSP- Dhankuta Town Project
REA- 1
Water supply
RAPID ENVIRONMENTAL ASSESSMENT (REA) CHECKLISTS
SSTWSSSP- Dhankuta Town Project
REA- 2
Water supply
RAPID ENVIRONMENTAL ASSESSMENT (REA) CHECKLIST
Instructions: (i) The project team completes this checklist to support the environmental classification of a project. It is
to be attached to the environmental categorization form and submitted to the Environment and Safeguards Division (RSES) for endorsement by the Director, RSES and for approval by the Chief Compliance Officer.
(ii) This checklist focuses on environmental issues and concerns. To ensure that social dimensions are adequately considered, refer also to ADB's (a) checklists on involuntary resettlement and Indigenous Peoples; (b) poverty reduction handbook; (c) staff guide to consultation and participation; and (d) gender checklists.
(iii) Answer the questions assuming the “without mitigation” case. The purpose is to identify potential
impacts. Use the “remarks” section to discuss any anticipated mitigation measures.
Country/Project Title: Sector Division:
Screening Questions Yes No Remarks
A. Project Siting Is the project area…
Densely populated? No Population density is about 15.50 per hectare.
Heavy with development activities?
No No such development activity except road improvement programme.
Adjacent to or within any environmentally sensitive areas?
• Cultural heritage site
No No remarkable sites
• Protected Area
No No protected area
• Wetland
No No Wetlands.
• Mangrove
No Found in the forest but not within project area
• Estuarine
Not Applicable
• Buffer zone of protected area
No No buffers zone of protected area
• Special area for protecting biodiversity
No No such area.
• Bay
No
Small Town Water Supply & Sanitation Sector Project
Water Supply
SSTWSSSP- Dhankuta Town Project
REA- 3
Water supply
Screening Questions Yes No Remarks
B. Potential Environmental Impacts Will the Project cause…
pollution of raw water supply from upstream wastewater discharge from communities, industries, agriculture, and soil erosion runoff?
No Scattered settlement is about 3Km upstream of proposed Nibuwa stream , No settlement upstream of Tankhuwa stream The distributed water is to comply with the National Drinking Water Quality Standards.
impairment of historical/cultural monuments/areas and loss/damage to these sites?
No Not expected
hazard of land subsidence caused by excessive ground water pumping?
No No ground water pumping scheme
social conflicts arising from displacement of communities ?
No No displacement required
conflicts in abstraction of raw water for water supply with other beneficial water uses for surface and ground waters?
No This is a rehabilitation and extension project of the existing one.
unsatisfactory raw water supply (e.g. excessive pathogens or mineral constituents)?
No The raw water quality in the area meets the National Drinking Water Quality Standards. Only disinfection will be required before distribution.
delivery of unsafe water to distribution system?
No Water will be disinfected to meet the National Drinking Water Quality Standards.
inadequate protection of intake works or wells, leading to pollution of water supply?
No Fencing and other protection works of water intakes to prevent pollution of water supply, and will be accessible only to authorized persons. The water will also be regularly monitored to ensure only treated water is distributed.
over pumping of ground water, leading to salinization and ground subsidence?
NA The project is based on surface source
excessive algal growth in storage reservoir?
No Storage reservoirs are only for treated water. The water will be chlorinated and the reservoirs covered to prevent algal growth
increase in production of sewage beyond capabilities of community facilities?
No Regular septage pumping is planned and will be dried in the sludge drying bed to be constructed by this project.
inadequate disposal of sludge from water treatment plants?
No Disposal of sludge to be done at designated sites as per the EMP.
SSTWSSSP- Dhankuta Town Project
REA- 4
Water supply
Screening Questions Yes No Remarks
inadequate buffer zone around pumping and treatment plants to alleviate noise and other possible nuisances and protect facilities?
No Noise impacts to be monitored. Furthermore, intake and treatment plants will be located in an isolated area away from the settlement.
impairments associated with transmission lines and access roads?
Yes Expected during pipe-laying but impacts will be temporary and short in duration. Traffic density is very low. A section-wise approach will also limit impairments to traffic and businesses during construction.
health hazards arising from inadequate design of facilities for receiving, storing, and handling of chlorine and other hazardous chemicals.
No Main dealing chemical is clorine. Rubber Gloves, boots , mask are provided and training will be provided for proper handling and storage of chlorine.
health and safety hazards to workers from handling and management of chlorine used for disinfection, other contaminants, and biological and physical hazards during project construction and operation?
No Personal protective equipment will be provided to workers. Regular training will also be conducted to ensure that workers are aware of the health hazards of chemicals.
dislocation or involuntary resettlement of people?
No Treatment units, reservoir complex belongs to WUSC, no involuntary resettlement is required.
disproportionate impacts on the poor, women and children, Indigenous Peoples or other vulnerable groups?
No The subproject will not affect indigenous peoples or other vulnerable groups. It will be beneficial to women and children as water will be available in their home and fetching water will no more be a problem. The contractor will be encouraged to engage from the local labor force.
noise and dust from construction activities?
Yes Expected but impacts will be temporary and short in duration. Water sprinkler will be used for mitigation of dust.
increased road traffic due to interference of construction activities?
yes Expected but impacts will be temporary and short in duration, as present traffic density is very low
continuing soil erosion/silt runoff from construction operations?
No Quick backfilling will prevent the soil erosion
delivery of unsafe water due to poor O&M treatment processes (especially mud accumulations in filters) and inadequate chlorination due to lack of adequate monitoring of chlorine residuals in distribution systems?
No Any distributed water to comply with the National Drinking Water Quality Standards and addressed in the EMP.
delivery of water to distribution system, which is corrosive due to inadequate attention to feeding of corrective chemicals?
No The O&M manuals to be developed and will be addressed in O & M manual.
SSTWSSSP- Dhankuta Town Project
REA- 5
Water supply
Screening Questions Yes No Remarks
accidental leakage of chlorine gas?
No Chlorine gas will not be used instead calcium hypochlorite will be used in the chlorination process.
excessive abstraction of water affecting downstream water users?
No .Agreement has been done not to extract 8 lps of water from Tankhuwa river. ( Though discharge is about 40lps)
competing uses of water?
No Nibuwa river will be used solely for water supply , for Tankhuwa: agreement has been done to use 8lps of water. Other existing operating sources will be continued for operation.
increased sewage flow due to increased water supply
No Population density is low. Increased sewage will be easily managed within the individual house by making pit.
increased volume of sullage (wastewater from cooking and washing) and sludge from wastewater treatment plant
No Bazaar has good drainage system with adequate slope. Regular maintenance of the drains will mitigate the increased volume. In other parts settlement is still rural setting and can be easily managed within backyard of house.
large population influx during project construction and operation that causes increased burden on social infrastructure and services (such as water supply and sanitation systems)?
No Priority in employment will be given to local residents. Construction contractors will be required to provide a worker’s camp, with basic facilities.
social conflicts if workers from other regions or countries are hired?
No Local people will be given priority for employment
risks to community health and safety due to the transport, storage, and use and/or disposal of materials such as explosives, fuel and other chemicals during operation and construction?
No Construction will not involve use of explosives and chemicals. Excavation ,trenching will be done manually.
community safety risks due to both accidental and natural hazards, especially where the structural elements or components of the project are accessible to members of the affected community or where their failure could result in injury to the community throughout project construction, operation and decommissioning?
No Construction areas will be clearly demarcated and access controlled. Only workers and project staff will be allowed to visit operational sites.
SSTWSSSP- Dhankuta Town Project
REA- 6
Water supply
* Hazards are potentially damaging physical events.
Climate Change and Disaster Risk Questions The following questions are not for environmental categorization. They are included in this checklist to help identify potential climate and disaster risks.
Yes No Remarks
• Is the Project area subject to hazards such as earthquakes, floods, landslides, tropical cyclone winds, storm surges, tsunami or volcanic eruptions and climate changes (see Appendix I)?
Not applicable
Could changes in temperature, precipitation, or extreme events patterns over the Project lifespan affect technical or financial sustainability (e.g., changes in rainfall patterns disrupt reliability of water supply; sea level rise creates salinity intrusion into proposed water supply source)?
Not applicable
Are there any demographic or socio-economic aspects of the Project area that are already vulnerable (e.g.,high incidence of marginalized populations, rural-urban migrants, illegal settlements, ethnic minorities, women or children)?
No Not applicable
Could the Project potentially increase the climate or disaster vulnerability of the surrounding area (e.g., by using water from a vulnerable source that is relied upon by many user groups, or encouraging settlement in earthquake zones)?
No Not applicable
Annex-3:
Public Notice
.
Annex-4:
Deed of Inquiry
Annex-5:
Water Quality Test Report
ANNEXES
Sample Questionnaire
ू ाथक् सव ण
खानपानी आपिूत ्र गुणःतर धनकुटा नगरपािलका (वडा २-७), नपाल
नाम:
िल ग: पु ष म हला
ठगाना: वडा: ट ल:
प रवारक प: सान संयु
प रवार सदःय सं या :
पु ष :
म हला :
कटाकट :
तपाईक घरमा कुन – कुन ॐ तक पानी ूय ग गनुहु् छ?
सावज्िनक धारा सामुदाियक धारा िनजी धारा कुवा आकासपानी सकंलन
अ य
तपाईल ूय ग गनु ्हुन सावज्िनक धारा / सामुदाियक धारा कितक टाढा छ ? (मीटर)
� . प रवारमा पानी याउन काम कसल गनु ्हु छ ?
पु ष
म हला कटाकट
� . घरमा दिनक पानीक खपत कित हु छ ? (िलटर ) (गागी)
� . घरमा कित समयक फरकमा पानी आउन गद्छ ?
दनक एकपटक भ दा बाद
दईु दनक एकपटक
ह ाक एकपटक
अ य
� . पानी आउन समयमा दनक कित घ टा आउछ ?
� . घरमा आउन पानी पया् छ क छन ?
छ छन
� . तपाई कितक अविधमा पानी आउन अप ा रा ु हु छ ?
दनक एकपटक भ दा बद
दनक एकपटक
� . पानी पउन य य बनाउन कुन - कुन उपायह अपनाउनु हु छ ?
उमालर फ टर औषिध ूय ग पानीक भाडा छ पर
घाममा राखर पानीक ॐ त सफा गरर कह ग रदन अ य
� . तपाईल ूय ग गनु ्भएक पानीमा कुन ग ध पाउन ुभएक छ ?