Project Background
1.1 Executive Summary of Project Background
Nha Trang, located in Khanh Hoa province, is a vibrant coastal city situated 1,280 km from Hanoi to the north and 448 km from Ho Chi Minh City to the south As a key political, economic, scientific, technological, and tourist hub, Nha Trang plays a significant role in both the province and the Central - Western Highlands region.
Figure 0-1 Location of NhaTrang city
From 2006 to 2014, Coastal Cities Environmental Sanitation Project (CCESP) financed by World Bank (WB) and the counterpart fund of the Government was implemented in the three
Nha Trang City, located in Khanh Hoa province, is part of a development initiative alongside Dong Hoi in Quang Binh province and Quy Nhon in Binh Dinh province The Nha Trang City Subproject, with a total investment of USD 93.6 million, encompasses six key components: drainage, flood control, and wastewater collection; a wastewater treatment plant; solid waste management; resettlement and site clearance; a revolving fund and school sanitation program; and capacity strengthening for project implementation The specific locations of the constructed works are illustrated in Figure 0-2.
The CCESP project in Nha Trang, implemented in the central and southern areas due to budget constraints and high inflation from 2007 to 2009, has significantly reduced flooding and enhanced environmental sanitation By channeling wastewater to the Southern Wastewater Treatment Plant, which has a capacity of 40,000 m³/day and consistently meets national effluent quality standards, the project has effectively decreased pollution at discharge points Overall, it has successfully met its development objectives, leading to improved living conditions for residents and promoting sustainable urban sanitation in the city.
Despite the positive advancements at the Southern WWTP, its efficiency is hindered by the incomplete tertiary sewer network in the central and southern regions The removal of certain project components in the northern area from the original CCESP loan agreement has led to significant flooding issues Consequently, untreated wastewater in the northern area has resulted in severe pollution, particularly at the outlets along Pham Van Dong street and the Cai river Rapid urban development in the northern region, coupled with the swift construction of social infrastructure like schools and hospitals, has exacerbated water pollution To ensure sustainable development, it is crucial to invest in the drainage system, enhance wastewater collection and treatment in the northern area, and complete the embankments and roads along the Cai river, as well as the tertiary sewer network in the central and southern regions.
The Government of Vietnam has proposed the Coastal Cities Sustainable Environment Project (CCSEP) to the World Bank, aimed at enhancing environmental investment efficiency and strengthening institutional reform programs in environmental sanitation across four coastal cities: Nha Trang, Dong Hoi, Quy Nhon, and Phan Rang - Thap Cham.
Lessons learnt as well as good practices on CCESP will be incorporated in the chapters of this ESIA
1.2 Competent Agency Approving the FS Report
Competent agency approving the FS Report: Khanh Hoa Provincial People’s Committee
1.3.1 Related Detailed Planning a Detailed planning on a scale of 1:500 of Nam Vinh Hai residential area
The planning for the southwestern area of Vinh Hai ward in Nha Trang city allocates approximately 43.49% of land for housing, 19% for public infrastructure, 13.22% for green spaces and regulating lakes, and 24.29% for transportation.
Figure 0-3 Detailed planning in scale of 1:500 of South Vinh Hai residential area
The balancing lake's location, area, and functions align with the project's planning Additionally, detailed planning at a scale of 1:2000 has been established for the Vinh Tho and Vinh Phuoc Wards in Nha Trang City, Khanh Hoa Province.
This planning is for the residential areas of Vinh Tho-Vinh Phuoc wards over an area of about
The designated leveling elevation for the 212 ha area exceeds 3.5 m, ensuring compatibility with surrounding residential structures Construction zones are strategically interspersed within residential areas, with the leveling elevation tailored to harmonize with the heights of adjacent buildings.
The subproject would include construction of Chu Dong Tu Street inline with this planning
Figure 0-4 Detailed construction planning for Vinh Tho-Vinh Phuoc Wards 1.3.2 Related Projects a Coastal Cities Environmental Sanitation Project (CCESP)-Nha Trang city Sub- project
The Nha Trang subproject builds upon the CCESP funded by the World Bank, which operated from 2006 to 2014 This initiative aims to effectively address flooding issues in the southern region and tackle water pollution in the northern part of the city, promoting sustainable development around the 1.05-hectare lake.
Chu Dong Tu roa4 of the CCESP in Nha Trang, the following lessons on environmental management and supervision are drawn up for the new proposed subproject:
The Construction Supervision Consultant (CSC) plays a crucial role in overseeing the implementation of the Environmental and Social Management Plan (ESMP) Throughout the project, the CSC consistently monitored the contractors' adherence to the site environmental management plan, ensuring effective management and mitigation of negative environmental impacts As a result, contractors largely adopted comprehensive measures to address environmental concerns during the project execution.
The PMU closely coordinated with local authorities and people in the project area The
The Project Management Unit (PMU) actively engaged with the local community to keep them informed about the project's scope, progress, and timeline To facilitate communication, the PMU established multiple channels, including direct feedback at their office, a dedicated hotline, and an official website, allowing residents to report environmental concerns effectively.
The Community Environmental Monitoring Plan (CEMP) was effectively executed throughout the project, ensuring timely communication of environmental and social impacts to the People's Committees of wards and communes, as well as local residents This collaboration facilitated prompt incident management and supported the Project Management Unit (PMU) and contractors in site clearance and worker management.
Effective communication and clear information regarding the subproject details and construction timeline are crucial for engaging local authorities Conducting public meetings prior to implementation fosters positive support from both local officials and the community, ultimately enhancing the effectiveness of the Construction Environmental Management Plan (CEMP).
Close coordination between PMU and the Independent Environmental and Social Monitoring Consultant was regularly maintained during implementation of the ESMP
The PMU, in collaboration with the Nha Trang Women’s Union, has integrated activities related to the Healthy City Partnership Program, focusing on communication efforts to enhance awareness of environmental sanitation These initiatives aim to inform the local community about the benefits of the project, particularly regarding wastewater connection.
The Project Management Unit (PMU) consistently collaborated with consultants to assess the environmental and social compliance of contractors Contractors who effectively implemented mitigation measures for environmental, traffic, and labor safety, such as those in Packages NT1.7, NT2.1, NT3.2A, and NT3.4, received commendations Conversely, contractors with subpar performance, specifically in Packages NT1.5A and NT1.5B, were promptly reminded of their responsibilities.
Thanks to constant attention of the related parties, risks and incidents arising during project implementation were minimized; and once happened, they were all noted and timely and satisfactorily addressed:
Legal and Technical Basis for ESIA Preparation
Administrative framework on Environmental Assessment
The Law on Environmental Protection (No.55/2014/QH13), enacted on June 23, 2014, alongside Decree No 18/2015/ND-CP, establishes a comprehensive legal framework for environmental management in Vietnam This legislation outlines statutory provisions for environmental protection activities, including the measures and resources necessary for safeguarding the environment It delineates the rights, powers, duties, and obligations of various stakeholders, including regulatory bodies, public agencies, organizations, households, and individuals involved in environmental protection The Law is applicable throughout the Socialist Republic of Vietnam, covering the mainland, islands, territorial waters, and airspace, and focuses on strategic environmental assessment, environmental impact assessment, and commitments to environmental protection.
The law mandates the consultation, inspection, and approval of environmental protection planning, as outlined in Article 11 of Chapter II It also specifies the entities required to undergo strategic environmental assessments, detailed in Appendices I and II of Decree No 18/2015/ND-CP, issued by the Government on February 14, 2015.
Article 13 of Decree No 18/2015/ND-CP outlines the requirements for Environmental and Social Impact Assessment (ESIA) agencies Project owners or advisory organizations conducting ESIA must ensure that they have qualified staff, including individuals with at least Bachelor's degrees and specialized training in ESIA consultancy Additionally, they must possess appropriate laboratories and inspection equipment for environmental sample analysis; if such facilities are lacking, a contract with a capable inspection unit is necessary The Ministry of Natural Resources and Environment oversees the training and certification of ESIA consultants.
The project is not associated with wetlands, protected natural areas, or the emission of persistent organic pollutants, and it does not pertain to the international trade of endangered wildlife and plant species As a result, there are no applicable international environmental agreements that Vietnam is a party to in this context.
Environmental Protection Law No 55/2014/QH13 ratified by the National Assembly of the Socialist Republic of Vietnam on June 23, 2014
Land Law No 45/2013/QH13 dated 29 November 2013
Investment Law No 67/2014/QH13 ratified by the National Assembly of the Socialist Republic of Vietnam on November 26, 2014
Construction Law No 50/2014/ QH13 ratified by the National Assembly of the Socialist Republic of Vietnam on June 18, 2014
Law on Water Resources No 17/2012/QH13 ratified by the National Assembly of the Socialist Republic of Vietnam on June 21, 2012
Law on Standards and Technical Regulations No 68/2006/QH11 ratified by the National Assembly of the Socialist Republic of Vietnam on June 29, 2006
Decree No 18/2015/ND-CP dated April 1, 2015 of the Government promulgating environmental protection planning, strategic environmental assessment, environmental impact assessment and environmental protection plan
Decree No 19/2015/ND-CP dated 14 May 02, 2015 of the Government detailing the implementation of some articles of the Law on Environmental Protection
Decree No 201/2013/ND-CP dated November 27, 2013 of the Government detailing the implementation of some articles of the Law on Water Resources
Decree No 127/2007/ND-CP dated August 1, 2007 of the Government stipulating the implementation of some articles of the Law on Standards and Technical Regulations
Decree No 80/2014/ND-CP dated August 6, 2014 of the Government stipulating drainage and waste water treatment
Decree No 03/2015/ND-CP dated 06 May 2015 of the Government on the environmental damage assessment
Decree No 59/2015/ND-CP dated June 18, 2015 of the Government on construction project management
Decree No 38/2015/ND-CP dated April 24, 2015 of the Government on the management of waste and scrap
Decree No 179/2013/ND-CP dated December 30, 2013 of the Government on sanctioning of administrative violations in the field of environmental protection
Decree No 43/2014/ND-CP dated May 15, 2014 of the Government detailing the implementation of some articles of the Law on Land
Decree No 44/2014/ND-CP dated May 15, 2014 of the Government regulating land prices
Decree No 45/2014/ND-CP dated 05/15/2014 of the Government providing the collection of land use levy
Decree No 46/2014/ND-CP dated 05/15/2014 of the Government providing the collection of land and water surface lease
Decree No 47/2014/ND-CP dated 05/15/2014 of the Government regulating compensation, support and resettlement upon land acquisition by the State
Decree No 84/2013/ND-CP of the Government on management of housing development and resettlement
Decree No 16/2016/ND-CP dated 03/16/2016 of the Government on the management and use of official development assistance (ODA) and preferential loans from donors;
Circular No 27/2015/TT-BTNMT dated May 29, 2015 of the Ministry of Natural Resources and Environment on strategic environmental assessment, environmental impact assessment and environmental protection plan
Circular No 36/2015/TT-BTNMT dated June 30, 2015 of the Ministry of Natural Resources and Environment on hazardous waste management
Circular No 36/2014/TT-BTNMT dated 06/30/2014 of MONREonland pricing method; compilation of and adjustment to land price lists; determination of specific land prices and consultancy on land pricing
Circular No 37/2014/TT-BTNMT 06/30/2014 MONRE detailing regulations on compensation, support, and resettlement upon land expropriation by the State
Decision No 63/2015/QD-TTg of the Prime Minister dated 10/12/2015 on policy on assistance in vocational training and job search for workers whose land is acquired
Decision No 1956/2009/QD-TTg of the Prime Minister dated 17/11/2009 approving the project on "Vocational training for rural workers by 2020"
QCVN 05:2013/BTNMT: National Technical Regulation on Ambient Air Quality
QCVN 50:2013/BTNMT: National Technical Regulation on Hazardous Thresholds for Sludge from Water TreatmentProcess
QCVN 06:2009/BTNMT: Ambient air quality Maximum allowable concentration of hazardous substances in ambient air
QCVN 26:2010/BTNMT: Acoustics – Noise in public areas and residential areas – Permissible noise levels
QCVN 08-MT:2015/BTNMT - National technical regulation on surface water quality
QCVN 09-MT:2015/BTNMT - National technical regulation on ground water quality
QCVN 03-MT:2015/BTNMT - National technical regulation on the allowable limits of heavy metals in the soils
QCVN19:2009/BTNMT – National Technical Regulations on industrial emissions for dust and inorganic substances
QCVN 20:2009/BTNMT – National Technical Regulation on Industrial Emission of Organic Substances
QCVN 07:2009/BTNMT- National Technical Regulation on Hazardous Waste Threshold
QCVN 14:2008/BTNMT- National technical regulation on domestic wastewater
The Viet Nam Building Code QCXDVN 01: 2008/BXD, developed by the Vietnam Institute for Urban and Rural Planning, received approval from the Science and Technology Department It was officially issued by the Ministry of Construction under Decision No 04/2008/QD-BXD on April 3, 2008.
Letter No 5664/UBND-XDNĐ dated 27 August 2015 of Khanh Hoa Provincial People’s Committee on agreement on the construction locations of work items under CCSEP
Notice No 426 /TB- UBND of Khanh Hoa Provincial People's Committee dated October 3,
In 2013, the Provincial People’s Committee concluded a meeting regarding the adjustment of the northern wastewater treatment plant (WWTP) construction site in Nha Trang City, focusing on the compensation, support, and resettlement plans for the Duong De residential area project.
On July 15, 2015, the Khanh Hoa Provincial People’s Committee issued Letter No 4190/UBND-XDNĐ, which outlines the adjustments to the land use planning for the DH2 lot within the 1:2000 scale detailed planning of the southwestern area of Hon Nghe, located in Vinh Ngoc commune, Nha Trang city.
On September 15, 2014, the Khanh Hoa Provincial People's Committee issued Notice No 507/TB-UBND, outlining conclusions regarding the resolution of issues related to the Nha Trang City Environmental Sanitation Improvement Project.
On June 11, 2012, Decision No 2793/QD-UBND was issued, approving the Environmental Impact Assessment report for the "Technical Infrastructure Construction for Hon Ro 2 Resettlement Area" project located in Phuoc Dong commune, Nha Trang city, Khanh Hoa province.
On March 25, 2016, Decision No 746/QD-UBND was issued, approving the Environmental Impact Assessment report for the "Technical Infrastructure Construction for Ngoc Hiep Resettlement Area" project, located in Ngoc Hiep Ward, Nha Trang City, Khanh Hoa Province.
2.2 World Bank’s Social and Environmental Safeguard Policies
The environmental and social screening for the subproject has been conducted in accordance with the Bank’s safeguards policies, revealing that the World Bank's policies on Environmental Assessment (OP/BP 4.01), Natural Habitats (OP/BP 4.04), Physical Cultural Resources (OP/BP 4.11), and Involuntary Resettlement (OP/BP 4.12) are applicable Compliance with public consultation and information disclosure requirements outlined in the relevant safeguard policies and the Bank’s Policy on Access to Information is essential The implementation of OP/BP 4.12 is detailed in the Resettlement Policy Framework (RPF) of the CCSEP project and the Resettlement Action Plan (RAP) for this subproject The environmental and social impact assessment (ESIA) has classified the subproject as Category A due to its potential for significant adverse environmental and social impacts.
World Bank Group Environmental, Health, and Safety Guidelines 4
World Bank-financed projects must adhere to the World Bank Group Environmental, Health, and Safety Guidelines (EHS Guidelines), which serve as essential technical reference documents These guidelines provide both general and industry-specific examples of Good International Industry Practice, ensuring that projects align with best practices in environmental and health safety.
The EHS Guidelines contain the performance levels and measures that are normally acceptable to the World Bank Group and are generally considered to be achievable in new
1 Full treatment of OP/BP 4.01 can be found at the Bank website: http://web.worldbank.org/WBSITE/EXTERNAL/PROJECTS/EXTPOLICIES/EXTSAFEPOL/0,,contentMD K:20543912~menuPK:1286357~pagePK:64168445~piPK:64168309~theSitePK:584435,00.html
2 Full description of OP/BP 4.04 is available at http://web.worldbank.org/WBSITE/EXTERNAL/PROJECTS/EXTPOLICIES/EXTSAFEPOL/0,,contentMD K:20543920~menuPK:1286576~pagePK:64168445~piPK:64168309~theSitePK:584435,00.html
The World Bank's OP/BP 4.12 provides detailed guidelines available on their website, emphasizing the importance of environmental assessments in project planning These assessments may suggest varying levels of measures, which, upon approval, become specific requirements for the project It is essential for the subproject to align with the general Environmental, Health, and Safety (EHS) Guidelines, as well as the industry-specific EHS Guidelines pertaining to Water and Sanitation.
2.3 Documents and Data Prepared by the Employer
The Employer's documentation encompasses essential materials such as the Project Feasibility Study, Basic Design Documents, Resettlement Action Plan, Social Assessment, and Environmental Impact Assessment for work items sanctioned under the CCESP that are pending implementation, as well as those to be executed within this subproject.
EIA Implementation Arrangement
The environmental and social impact assessment is being conducted by Vietnam Water, Sanitation and Environment Joint Stock Company, in close collaboration with the Khanh Hoa Development Project Management Unit.
Legal representative: Mr Le Van Tuan - General Director
Contact address: No 5, Duong Thanh, Cua Dong Ward, Hoan Kiem District, Hanoi
Key experts participating in preparation of the ESIA are listed below (table 0-1):
Table 0-1 Key Experts for ESIA Report Implementation Arrangement
NO Name of experts Qualification Tasks
1 Dao Thanh Thai Master of sociology Team leader/ Senior environmental or/and social specialist
2 Le Hung Anh Ph.D Environmental Specialist
3 Do Huu Thu Ph.D of Biology Ecology Specialist
4 Tran Hoai Le Environmental engineer
5 Nguyen Nhu Tung Bachelor of chemistry Chemical/Analysis Specialist
6 Nguyen Le Tam Bachelor of sociology Resettlement Specialist 1
7 Quang Thu Nguyet Master of sustainable development
8 Pham Duc Nghiem Bachelor of sociology Social / Community Specialist 2
Environmental and Social Assessment Methods
The Environmental and Social Impact Assessment (ESIA) was conducted alongside the subproject feasibility study to identify, evaluate, and propose strategies for preventing, mitigating, and controlling potential negative environmental and social impacts during implementation Sustainable development and environmentally-friendly solutions were prioritized throughout the preparation and execution of the subproject This ESIA adheres to the World Bank's safeguard policies as well as relevant national laws and regulations, utilizing a rapid assessment method for efficiency.
The Rapid Assessment Method was issued by the World Health Organization (WHO) in
1993 Basis of this method is nature of materials, technologies and rules of natural processes as well as experiences in rating pollution load
In Vietnam, the application of the Environmental and Social Impact Assessment (ESIA) method has proven effective in accurately calculating pollution loads, even with limited measurement tools This report utilizes pollution load coefficients based on the ESIA guidelines from the World Bank's Environmental Assessment Sourcebook and the Handbook of Emission for both non-industrial and industrial sources from the Netherlands Additionally, the impact matrix method is employed to further enhance the assessment process.
The impact matrix illustrates the correlation between the effects of each subproject activity and various environmental issues This framework will guide the detailed analysis of the associated impacts Additionally, a comparison method will be employed to evaluate the findings effectively.
The comparison method evaluates environmental quality, effluent quality, and pollution load by measuring them against established environmental norms and standards, as well as regulations from the Ministry of Health and relevant research studies Additionally, it incorporates an impact identification method to further assess environmental effects.
The method involves several key steps: first, describe the environmental system; next, identify the subproject components that impact the environment; and finally, outline the complete range of related waste streams and environmental issues for thorough evaluation.
Since the establishment of National Environmental Protection Agencies (NEPA) in various countries, a systematic approach to environmental analysis and evaluation has emerged, yielding positive outcomes This approach encompasses two primary categories: a description listing table that identifies environmental components requiring research, along with relevant measurement, prediction, and evaluation data, and a simple checklist that outlines the environmental components to be studied and those likely to be affected Additionally, the method of public consultation and information disclosure plays a crucial role in this process.
Public consultation plays a crucial role in identifying opportunities and risks, enhancing subproject design and implementation, and fostering ownership and sustainability Required by the World Bank’s environmental and social safeguard policies, this meaningful two-way process allows beneficiaries to offer valuable insights on subprojects that impact their lives and environment It encourages dialogue among governments, communities, NGOs, and implementing agencies to address all facets of the proposed subproject Feedback gathered from these consultations will be integrated into the Environmental and Social Impact Assessment (ESIA) and overall project design.
The subproject impacts a diverse group of stakeholders, including individuals who have been resettled, nearby communities, and intended beneficiaries Key interest groups, which may vary by project, encompass local NGOs, mass organizations such as women's unions, and various levels of government—local, state, and central Additionally, other donor and development agencies play a crucial role in addressing the needs of all affected parties.
Disclosure of subproject information, including safeguards and instruments, ensures public access to essential environmental and social details This transparency is required by the World Bank’s policies on Environmental Assessment, Involuntary Resettlement, and Indigenous Peoples.
Infoshop, like all consultations, it is an ongoing process during the subproject preparation and supervision process
Other Methods a) Method of information and data inheritance, summary and analysis
This method involves identifying and evaluating the natural and socio-economic conditions of the subproject area by gathering data from diverse sources, including statistical yearbooks, regional socio-economic profiles, and baseline environmental studies Additionally, leveraging existing studies and reports is crucial to maximize available findings and identify any limitations.
Field surveys are essential for Environmental and Social Impact Assessments (ESIA) as they help determine the current conditions of the subproject area and its surroundings This includes selecting sampling locations and evaluating various factors such as the natural environment, hydrography, weather conditions, land use, and biodiversity, including vegetation, fauna, and flora The findings from these surveys are crucial for assessing the natural conditions of the subproject area.
The consultant team, equipped with expertise in environmental science and extensive experience in Environmental and Social Impact Assessment (ESIA), will collaboratively review and validate the findings of the ESIA This process includes the implementation of rigorous sampling and laboratory analysis methods to ensure accurate results.
Sampling and analyzing environmental components such as soil, water, and air are crucial for assessing the baseline quality of the environment in the subproject area Additionally, conducting social surveys and assessments is essential for understanding the community's perspective and impact.
A socio-economic survey was conducted over three weeks, from February 18 to February 29, involving 843 households across 18 wards and communes in Nha Trang City The survey targeted households listed in the study area and those affected by specific investment items Data collected through questionnaires were analyzed using SPSS software (Statistical Package for Social Sciences).
In-depth interviews were conducted with 54 key informants, including leaders from the Province, City, and Ward People’s Committees, as well as officers from provincial departments focused on economy, construction planning, and land use planning Additionally, representatives from the City Infrastructure Department and leaders of village and street groups at the ward and commune levels were interviewed, alongside households in the project area, which encompassed both affected and beneficiary households.
SUBPROJECT DESCRIPTION
General Description of Subproject
Project Title: Coastal Cities Sustainable Environment Project (CCSEP) – NhaTrang City subproject
Employer: Khanh Hoa Development Project Management Unit
The Employer’s Representative: Mr Chau Ngo Anh Nhan – Position: Director of Project Management Unit
Contact address: No 06A Yersin, Nha Trang City, Khanh Hoa Province
Tel: (058) 3562224 Fax: (058) 3562203 Email: davsmtnt@vnn.vn
The subproject aims to promote sustainable environmental investments while enhancing the institutional reform program focused on the city's environmental sanitation.
The subproject aims to enhance the operational capacity of the Southern Wastewater Treatment Plant (WWTP) by investing in the completion of the tertiary sewer network and odor prevention manholes in central and southern areas It seeks to address flooding and pollution issues in the northern region through the construction of combined and separate wastewater collection sewers, pumping stations, and the Northern WWTP Additionally, the project will improve environmental sanitation and flood drainage along the Cai River while upgrading city transport infrastructure to align with development plans To ensure effective implementation and sustainability, consultancy services for contract management, construction supervision, environmental monitoring, and social safeguards will be provided in accordance with government and World Bank regulations Technical assistance will also support management agencies and institutional reforms to achieve the project’s objectives.
1.1.2 Geographical Location of the Subproject
The subproject will be executed in various regions of the city, encompassing the northern wards of Vinh Hoa, Vinh Hai, Vinh Phuoc, Vinh Tho, and the suburban commune of Vinh Ngoc It will also cover the central areas, specifically Ngoc Hiep and Van Thang wards, as well as 11 southern wards, which include Loc Tho, Phuoc Long, Phuoc Hoa, Xuong Huan, Van Thanh, Phuoc Tien, Phuoc Tan, Phuong Sai, Phuong Son, Vinh Nguyen, and Tan Lap.
Main Content of the Subproject
The subproject consists of 04components: Component 1 - Sanitation Infrastructure; Component
2 - Environmental Infrastructure; Component 3 - Resettlement and Site Clearance; and Component
4 - Technical Assistance and Institutional Reform
Table 1-1.Summary of component investments
Work Item Main specifications Construction location
Pipe uPVC, diameters of D150-D200- D300mm
Loc Tho, Phuoc Long, Phuoc Hoa, Xuong Huan, Van Thanh, Phuoc Tien, Phuoc Tan, Phuong Sai - Van Thang, Phuong Son, Vinh Nguyen, Tan Lap
Box culverts in diameter of 1x1 to 3x3x2,5 (m)
Wards of Vinh Phuoc, Vinh Tho, Vinh Hai
Construction of wastewater pumping station (WWPS) and
Combined sewer overflow (CSO) systems
Area of 04 WWPSs (PS1 - PS4): 45 m 2 Area of pump station 5 (PS5):
Wards of Vinh Hoa, Vinh Tho, Vinh Phuoc
Construction of drainage pumping station
Total land area: 1.29 ha Vinh Ngoc Commune Construction of sewers Sewers, in dia D90-D800
Total length: 11,005m Construction of WWTP Capacity of 15,000 m 3 /day Effluent satisfactory to QCVN 40:2011/BTNMT Column A
Construction of the regulating lake
Area of 1.05 ha, depth of 4.5 m with sidewalk of 1.5m wide, lighting and green trees
Construction of school sanitation blocks
School sanitation blocks for 04 schools with separated male and female restrooms
Nguyen Khuyen, Ngo Van So, Dien Bien Phu, Ton That Tung streets
Construction of embankment at the northern bank of Cai river
Length: 423m, accompanied with vegetation as landscape
Construction of road and embankment at the southern bank of Cai river bank
Embankment: 2,026m long Road: 2,064m long, 28m wide
Ngoc Hiep, Van Thang wards
Length: 321m 14m wide Sewer, dia D1500mmin length of 251m, box culvert 2x1.5 (m) in length of 78m, accompanied lighting system, greenery
Length: 1,828m, 17-8.5m wide ,accompanied drainage, sewerage, lighting system, greenery
Component 3: Resettlement and Site Clearance
(no work items to be constructed under this
The subproject will not build a separated resettlement site, but will resettle the affected households in the available resettlement sites of the city, which are Ngoc Hiep, Hon Ro
2, and Dat Lanh resettlement sites
Component 4: Technical Assistance and Institutional Reform
We offer comprehensive consulting services that provide technical assistance to employers and management agencies Our support includes independent consulting, seminars, experience sharing, and regular review workshops to ensure effective implementation and the development of managerial procedures.
Support for institutional reform in specific sectors is essential to enhance operational efficiency and ensure the sustainability of projects Additionally, fostering experience sharing among localities regarding the management of ODA projects focused on drainage and environmental sanitation can lead to improved practices and outcomes.
Effective subproject management by the Employer involves overseeing implementation activities while adhering to government regulations and community-based media programs This approach aims to disclose important information and enhance public awareness regarding environmental protection among residents in the subproject area.
Figure 1-2 Locations of investment items
The work items of Component 1 are described in details below:
(1) Installation of tertiary sewers D150, D200 and D300mm (uPVC) in the north, central, and south of the city:
A total of 94.6 kilometers of tertiary sewers, with diameters ranging from 150mm to 300mm, along with 5,370 manholes, will be installed across 12 wards in the central and southern regions of the city, including LocTho, Phuoc Long, and Vinh Nguyen The project entails the installation of 20.6km of D300 sewers, 24km of D200 sewers, and 50km of D150 sewers, as well as 400x400x400 mm manholes in densely populated areas Additionally, wastewater connection boxes will be placed along the roads, providing one box per house or two houses depending on site conditions Household, restaurant, and hotel owners will be responsible for connecting their properties to these connection boxes.
A recent survey by VIWASE indicates that the wastewater collection system in the central and southern regions of the city will be expanded to include 8,000 households, 110 hotels, and 7 restaurants Additionally, in the northern area, 8,212 households, 42 hotels, and 32 restaurants are set to be connected to this essential infrastructure.
Figure 1-3 Diagram of house connection to tertiary sewer network
(2) Combined sewerage system in northern area:
To enhance the combined sewerage system in the northern part of the city, the subproject will involve the installation of 6,786 meters of sewers with diameters ranging from 600mm to 1,000mm, alongside box culverts measuring between 1x1 meters and 3x3x2.5 meters.
2 Sewer on Road from Thap Ba street to
Nguyen Dinh Chieu street(on both sides)
3 Sewer in area of Bau Market – Vinh Tho
4 Culvert in Son Thuy Cluster 1.5x1.5 1.3-1.55 m 148
Construction of box culvert along with railway, to be laid underneath Road
6 Sewer on Dien Bien Phu street D1000 1.1-1.89 m 900
Construction of box culvert connecting
M1 Channel to balancing lake in the west of Vinh Hai Ward
8 Box culvert from balancing lake to railway bridge 2x(2,5x2,5) 4-4.12 m 72
Construction of box culvert connecting
Nguyen Khuyen Outlet to 1.05ha balancing lake
Six combined sewer overflows would be constructed with the dimensions and locations shown in the following Table 1-3:
Table 1-3 Location and dimension of the combined sewer overflows
TT Pumping station Location Dimension
1 Wastewater combined sewer overflows 1 (CSO1)
At the end of box culvert of M1
2 Wastewater combined sewer overflows2 (CSO2)
Outlet at the end of Nguyen
3 Wastewater combined sewer overflows3 (CSO3)
Existing channel next to Son Thuy
4 Wastewater combined sewer overflows4 (CSO4)
The beginning end of Pham Van Dong street, opposite Ton Than Tung street
5 Wastewater combined sewer overflows5 (CSO5) Near Tran Phu Bridge 5.25*2.7*2.57
TT Pumping station Location Dimension
6 Wastewater combined sewer overflows6 (CSO6)
Road along the embankment of Cai River, opposite to Tran Kim Hung street
The subproject would build 4 intermediate wastewater pumping stations and 1 main wastewater pumping station with submersible pumps in reinforced concrete pumping chambers
Table 1-4 Location and capacity of wastewater pumping stations (WWPS)
Sidewalk of Pham Van Dong street toward Mai Xuan Thuong street is about 4m away from the existing box culvert (M2 Channel)
2 PS2 Vacant land at the foot of Xom Bong Bridge
(to the East of the Bridge) 2,820 BxH=5x9
3 PS3 Planned sidewalk of intersection of Cai river embankment road and Chu Dong Tu street 873 BxH=5x9
PS4 Sidewalk of Than Nhan Trung street, 25m away from intersection of Pham Van Dong street
Land lot X7 (green planning area in accordance with detailed planning at scale of 1/2000 for Vinh Hai-Vinh Hoa ward residential area)
A total of 509 inlets will be upgraded to odor prevention manholes, each measuring 400x400x400 mm This improvement will be implemented along key main roads, including Dien Bien Phu Street, Dang Tat Street, Bac Son Street, Cu Chi Street, Pham Van Dong Street, and April 2 Street in the northern region.
The drainage pumping station will be situated downstream of the existing Cai River channel, within Land Lot D5 of the detailed planning at a scale of 1:2000 for southwestern Hon Nghe It will be bordered to the west and east by the planned Nha Trang I-resort road, which has an elevation of +3.50m, while vacant lands will lie to the north and south.
This pumping station would solve flooding for the northern area of the city, such as the streets of Dien Bien Phu, Nguyen Khuyen, April 2 street
By 2021, a drainage pumping station will be constructed with a capacity of 10 m³/s, featuring three pumps (two operational and one standby), each with a capacity of 5 m³/s and a height of 4 m The civil works will encompass a chamber, a pump house, and a discharge channel designed to handle a discharge capacity of 40 m³/s, aligning with future urban development plans The pumping station will occupy an area of 1.29 hectares.
Figure 1-4 Location of the drainage pumping station
1 Pham Van Dong street (Duong De residential area)
2 Road in Duong De residential area - gravity sewer D300 2.94-3.76 314.6
3 Pham Van Dong street– pressure pipe from PS4
(Duong De residential area) to gravity sewer D200 1-1.59 924
4 Dien Bien Phu street - gravity sewer D400 1.1-1.89 383
5 Duong Hien Quyen street - gravity sewer D400 1.2-2.78 863
6 Pham Van Dong street (Dien Bien Phu intersection to PS1) D400 1.2-2.2 431
7 Gravity sewer on Road No 4 D300 1.5-2.0 1,209
8 Pressure pipe from PS1 to combined sewer on Mai
Pressure pipe from PS3 to April 2 street (Doan Tran
Nghiep intersection), then running along April 2 D200 0.91-3.3 808
10 Pressure pipe from PS2 in Son Thuy Cluster to
11 Sewer on Pham Van Dong street from CSO4 to the river embankment road D300 2.46-4.04 380
12 Sewer on Pham Van Dong street from CSO5 to the river embankment road D300 2.57-3.03 129
13 Sewer on the river embankment road from Pham
Van Dong street to PS3 D300 3.35-4.15 517
14 Sewer from CSO2 to PS5 – Vinh Hai Ward D400 4.25-5.79 534
15 Sewer from CSO1 to PS5 – Vinh Hai Ward D800 4.34-6.26 76
16 Pressure pipe from PS5 to WWTP – Vinh Hai
17 Pressure pipe from April 2 street to Road no 4 D90 37
The Northern Wastewater Treatment Plant (WWTP), designed to serve the northern region of Nha Trang City, will be situated in Vinh Ngoc commune on a 3.03-hectare site This location, currently vacant and approximately 100-300 meters from low-density residential areas, aligns with the approved detailed planning of southern Hon Nghe at a scale of 1:2000 The WWTP will have a treatment capacity of 15,000 cubic meters per day, structured into two modules of 7,500 cubic meters each, utilizing advanced oxidation ditch technology The treated effluent will adhere to the National Technical Regulation on Industrial Wastewater, QCVN 40:2011/BTNMT column A, ensuring compliance with water quality standards necessary for supply, as detailed in Table 1-6.
Table 1-6.Main parameters of the effluent quality
No Parameter Unit Influent data Effluent data QCVN 40:2011/BTNMT column A
4 Total suspended solid (TSS) mg/l 160