TABLE OF CONTENTS
PREFACE...3
CHAPTER I. SUMMARY ABOUT THE PROJECT...3
1.1. Description about the project, proposing agency, project implementation agency and project operation agency...3
1.1.1. Description about the project...3
1.1.2. Project-relevant agenices...8
1.2. Project implementation schedule...9
1.2.2. Investment preparation progress...9
1.2.3. Progress of investment implementation...9
1.3. Project implementation site...9
1.4. Investment for the project...10
1.4.1. Total investment...10
1.4.2. Capital for the project...10
CHAPTER II. BACKGROUND AND BASIS OF THE PROJECT...11
2.1. Project Background...11
2.2. Basis for identification of the project necessary...11
2.2.1. Macro environment and development policies of the country...11
2.2.2. Project conditions and background...14
2.2.3. Market...16
Basic for the project preparation...19
2.3. Project objectives...21
2.3.1. Genenral objectives of the project...21
2.3.2. Specific objectives of the project...21
2.4. Adaptability and orientation of the drainage & sewage planning for urban areas and industrial zones in Vietnam...22
2.4.1. Orientation for the drainage & sewage development in urban areas and industrial zones in Vietnam...22
2.4.2. The master plan of urban drainage & sewage system of HCMC made by JICA. ... 22
2.4.3 Conformability with the flood control of HCMC...24
2.4.5. Conformability with the master construction planning of District 2 to 2020...29
2.5. The relation with other related projects...30
2.6. Necessity for investment...31
CHAPTER III. PROJECT DISCRIPTION: DESIGN, RESORUCES AND RESULTS...32
3.1. Project scale...32
3.1.1. Project grade and designed frequency...32
3.1.2. Proposed project scale...32
3.2. 3.2. Natural condition and socio-economic conditions of the project area...36
3.2.1. Geological condition...36
3.2.2. Features of Topography...36
3.2.3. Geological conditions...37
3.2.4. Climate condition...37
3.2.5. Features of hydrologic...39
3.2.6. Social economic condition of the project area...41
3.2.7. Technical infrastructure...43
3.2.8. Drainage status...43
3.2.9. Flood condition status in District 2...45
3.2.10. Sewage status...46
3.3. Technology selection...48
3.3.1. Technical solutions to urban drainage & sewage...48
3.3.2. Analysis on selection of the drainage & sewage system in the project area...49
3.3.3. Identification of drainage system scale...50
3.3.4. Identification of sewage system scale...66
3.3.4. Priority order for investment in the sewage system...74
3.3.5 Household connection...78
3.4. Plan for site clearance and resettlement...81
3.4.1. The scope of site clearance and impacts of resettlement...81
3.4.2. Policeis & rights...81
3.4.3. Public consultation and claim settlement mechanism...82
3.4.4. Cost estimate and budget for compensation...82
3.5.1. Standards and criteria...82
3.5.2. Environemtanl protection measures...84
3.5.3 Organsiation...85
CHAPTER IV. TOTAL INVESTMENT COST, CAPTIAL SOURCE ALLOCATION AND FINANCIAL PLAN...87
4.1. Total investment cost...87
4.1.1. Basis for total investment cost...87
4.1.2. Total investment cost...88
4.2. Capital sources...89
4.2.1. Capital sources...89
4.2.2. Plan for capital source allocation...90
4.2.3. Distribution of investment period...90
4.3. Financial mechanism...91
4.3.1. Financial mechanism of World Bank for Vietnam...91
4.3.2. Financial mechanism of Vietnam for the project Owner...91
4.3.2.Financial conditions...91
4.4. Calculation of sewage charge...92
4.4.1. Basis for calculation...92
4.5.3. Determination of sewage charge...93
CHAPTER V. MANAGEMENT OF PERFORMANCE AND OPERATION OF THE PROJECT... 97
5.1. Main data on the agency performing the project...97
5.2. Project implementation management...97
5.2.1. Organization of project implementation management...97
5.2.2. Role of organizations, functional agencies organizsing the project implementation...98
5.3. Project implementation schedule...100
5.4. Tender control...101
5.4.1. Tender procedures and principles...101
5.4.2. Division of bidding packages...101
CHAPTER VI. PROJECT EVALUATION...105
6.1.1. Financial evaulation...105
6.1.2. Repayment ability of the project:...111
6.1.3. Sensitivity analysis of financial forecasts...111
6.2. Evaluation on the social impacts...113
6.2.1. Drainage & sewage and environmental sanitary...113
6.2.2.Living condtion of residents and economic development:...113
6.2.3.Effect of the project on povery reduction...114
6.3. Evaluation on the project feasibility...114
6.3.1. Technical feasibility:...114 6.3.2. Environmetnal feasibility:...114 6.3.3. Financial feasibility:...114 6.4. Rish evaluation...115 6.4.1. Commercial risks...115 6.4.2. Socio-Economic Risk...116 6.4.3. Institutional risks...118 6.4.4. Technical risks...118
6.4.5. Risks regarding customers...120
CONCLUSION AND PROPOSAL...121
1. Conclusion...121
LIST OF FIGURES
Figure 1.General planning of District 2 to 2020...9
Figure 2. General layout of District 2...12
Figure 3. Sơ đồ phân chia lưu vực thoát nước thải Thành phố theo quy hoạch JICA...22
Figure 4: Mapping planning about flood control in HCMC...24
Figure 5. Annual rainfall map of Sai Gon-Dong Nai river basin...37
Figure 6. Bản đồ hiện trạng nền và ngập úng...45
Figure 7. Map of Thao Dien Basin – Basin 1...54
Figure 8. Map of Tran Nao Basin – Basin 2...54
Figure 9. Map of Thu Thiem Urban area Basin – Basin 3...55
Figure 10. Map of An Phu New Urban Area Basin – Basin 4 4...56
Figure 11. Bản đồ lưu vực 5...57
Figure 12. Bản đồ lưu vực 6...58
Figure 13. Map of basins no. 7 and 8...59
Figure 14. Map of prioritize areas...77
LIST OF TABLES
Table 1. Details of items in the rainwater collection system...4
Bảng 2. Thống kê các Items công trình System thu gom nước thải sinh hoạt...6
Table 3. The area divided based on the elevation at the downstream of Sai Gon – Dong Nai ... 16
Table 4. Water supply demand and of the city to 2025...17
Table 5. Wastewater discharge basins in HCMC to 2025...27
Table 6. Statistic table of items in the rainwater collection system...31
Bảng 7. Thống kê các Items công trình System thu gom nước thải sinh hoạt...33
Table 8. Maximum rainfall in Ho Chi Minh City...37
Table 9. Water level at Phu An station – Sai Gon river by frequencies...39
Table 10. Population of wards in District 2 in 2011...42
Table 11. Scale of bridges on the left side of Sai Gon River in accordance with irrigation planning 1547...50
Table 12. The expected scale of channels in accordane with the Planning 1547...51
Table 13. Analysis on the investment in items of draiange system...61
Table 14. Scale of works under the proposed draiange system...63
Table 15. Norm for water supply in accordance with the proposal of the city...65
Table 18. Estimated population scale in District 2 to 2020...66
Bảng 19. Bảng tính lưu lượng nước thải quận 2 trong 1 ngày...67
Table 20. The scale of the sewage system in District 2...71
Table 21. Evaluation of the priorty cretiera for the drainage system...74
Table 22. Evaluation of the priorty cretiera for the sewage system with grade 3...74
Table 23. Evaluation of the priorty cretiera for the sewage system with grade 2...75
Table … Estimates about connection fees with the sewage system regarding households. 79 Bảng 24. Tiến độ các báo cáo môi trường...84
Bảng 25. Thống kê vai trò và chức năng về môi trường của các Unit tham gia...84
Table: .... Summary of work construction cost estimate...87
Table: .... Allocation of capital to be used...89
Table of capital allocation...89
Table … : Structure of capital using in each year...90
3.5 Preferences...100 Risk identification and recovery measures in term of technology...118
PREFACE
Hochiminh Cit is the biggest city as well as a key economic, cultural, scientific, technical & political center in the country with 19 urban districts and 5 sub-districts with total natural area of around 2095,01 km2 with the total current population of around 7.5 million persons and 2.5 million
visitors and temporary resident with the average density of 4773 persons/km2. HCMC always has
had a very important role in the Vietnam economy. Thanks to the favorable natural condition, HCMC is the key traffic junction of Vietnam and South East Asia, including roads, railways, waterways and air.
In recent years, HCMC has faced problems of a big metropolitan area with too rapid growth of population. In the urban area, the roads have become too narrow with high frequency of traffic jam, public transport system is inefficient and environment is being pollution due to traffic vehicles, construction site and industrial zones, etc. In addition the most serious matter of the city at the moment is the flood condition and collection of domestic waste. In the recent years, flood condition has often occurred, especially in the high tidal day. The flood condition is caused by different reasons, such as high tide in combination with the increase of coastal water and heavy and sudden rains, infrastructure, especially rainwater collection system, wastewater treatment & solid waste management, which are not priotized for investment and have not meet the urban development, affecting life, health and environment of residents as well as socio-economic development of the city significantly.
Regarding HCMC in general and District 2 in particular, the investment in construction of a system for sewage, wastewater collection and treatment is very necessary. However the construction of infrastructure projects with a large amount of capital is extremely difficult . For years, the ODA fund for infrastructure investment has been invested throughout Vietnam including the ODA of World Bank which is dispersed in different localities in the country. With the approval of the Government and Ministries, a drainage and sewage project in the period of 2002-2012 (Project - Phase 1) in Hochiminh is invested by ODA of World Bank. Up to now, the works of the Project in this period has proved the efficiency and improved the environmental condition significantly, contribution to the great benefit for the local residents.
The feasible study is prepared in order to propose design for sewage and drainage system in order to increase the service coverage of the project for the area in the Phase II, which have not been archived in the Project - Phase I. The project is the consecutive step to improve the overall environmental in Hochiminh City through the construction of drainage & sewage system of the area in Phase II.
This report is the basis for defining the invested volume, total investment fund and effectiveness analysis of the project in terms of finance, socio-economy. In addition, the report also represent about matters related to environmental impact, resettlement, institutional issues, management and operation, etc.
CHAPTER I. SUMMARY ABOUT THE PROJECT
1.1. Description about the project, proposing agency, project implementation agency and project operation agency.
1.1.1. Description about the project a. Project objectives
In 1999, World Bank (WB) and the Government of Vietnam agreed to develop the support program for the water sector in Vietnam. The HCMC Environmental Sanitation Project is one of the items under the support program.
In 2001, the HCMC Environmental Sanitation Project was constructed under the agreement and support of the Government of Vietnam and WB. The project was prepared with the purpose of rehabilitation and construction of drainage & sewage system for some regions in the urban areas of Hochiminh City. Up to now, the works under the project has proved the efficiency and improved the environmental condition significantly in Hochiminh City, contribution to the great benefit for the local residents.
In order to promote the stated-above benefits as well as solve the existing problems in the area which area not invested satisfactorily, HCMC People’s Committee has a policy to continue to implement the Project - Phase 2. The project – Phase 2 was implemented with the total funds of the World Bank (WB) and city budgets of $ 480 million. The project will be approved by the MPC, and then submitted to the WB. If accepted by WB, the project shall be commenced and completed for operation in 2019.
The general objective of the project:
- Improve the environmental condition in HCMC through construction of drainage & sewage systems.
- Increase the durability of the urban infrastructure and service in HCMC. - Reduce environmental pollution for the urban area.
- Minimize the epidemics caused by the stagnant and untreated water. The rainwater and wastewater in most residential areas of the city will be discharged properly to eliminate negative impacts on the people's health and activities of the city caused by water discharge.
- Improve awareness about the creation and preservation of a salubrious environment. Strengthen capacity of management – operational regarding drainage & sewage system of Ho Chi Minh City Urban Drainage Company Ltd.
- Create a favorable condition to attract more investors and people to live in new urban areas as well as attract investors in terms of production and business to invest in industrial zones & tourism areas.
Specific objectives of the project: Construct the drainage & sewage system in District 2, Hochiminh City in order to meet socio-economic development planning of the city in the period of 2013 ÷ 2020, including:
- Construct rainwater and wastewater collection systems in District 2, HCMC to reduce the flood condition in heavy rains.
- Install gates at the outlets of the drainage system in order to reduce the flood condition in case of high tide and increase capacity of rainwater reserve in the pipeline system. - Construct domestic wastewater system at the secondary and third grade from
- pipeline of the city and transfer to the wastewater treatment plant in order to reduce water pollution source and improve health of the community as well as contribute to the living condition of the people.
- Support to construct domestic wastewater system and septic tank for households having low income in District 2 to connect with the wastewater collection network with grade 3.
b. Main components of the project
The main components of the project are as follows:
- The systems for rainwater collection, discharge system and flood control in case of raining condition and high tide including:
Table 1. Details of items in the rainwater collection system
No. Area System Items Unit Quantity
I T h ao D ie n C on str u ct io n Pipeline - Pipeline 1500 m 3.570 - Pipeline 1200 m 3.770 - Pipeline 1000 m 540 Outlet - Outlet 1500 pcs 2 - Outlet 1200 pcs 9 - Outlet 1000 pcs 2 Manhole
- Manhole with pipeline 1500 pcs 85
- Manhole with pipeline 1200 pcs 88
- Manhole with pipeline 1000 pcs 14
- Rainwater collection chamber pcs 187
O u tle t Outlet - Outlet 1000 pcs 5 - Outlet 800 pcs 10 - Outlet 600 pcs 13 - Outlet 400 pcs 8 II S ot h o f T h ao D ie n C on str u ct io n Pipeline - Pipeline 1500 m 1.493 - Pipeline 1200 m 2.406 - Pipeline 1000 m 886 - Pipeline 800 m 1.119 Outlet - Outlet 1500 pcs 4 - Outlet 1000 pcs 1 - Outlet 800 pcs 1
No. Area System Items Unit Quantity Manhole
- Manhole with pipeline 1500 pcs 38
- Manhole with pipeline 1200 pcs 58
- Manhole with pipeline 1000 pcs 24
- Manhole with pipeline 800 pcs 28
- Rainwater collection chamber pcs 148
Outlet
Outlet
- Outlet 800 pcs 6
- Outlet 600 pcs 8
- Outlet 400 pcs 2
- Outlet of open dykes B = 500 pcs 2
III B in h T ru n g D on g B in h T ru n g T ay - C at la i C on str u ct io n Pipeline m - Box culvert 2000x2000 m 701 - Pipeline 2000 m 1.610 - Pipeline 1500 m 2.612 - Pipeline 1200 m 431 - Pipeline 1000 m 4.768 - Pipeline 800 m 5.141 - Pipeline 600 m 858 - Pipeline 500 m 484 Outlet
- Outlet of box culvert pcs 1
- Outlet 2000 pcs 2
- Outlet 1500 pcs 1
- Outlet 1200 pcs 1
- Outlet 1000 pcs 1
Manhole
- Manhole with culvert box Bxh (2000x2000)
pcs 15
- Manhole with pipeline 2000 pcs 36
- Manhole with pipeline 1500 pcs 58
- Manhole with pipeline 1200 pcs 12
- Manhole with pipeline 1000 pcs 107
- Manhole with pipeline 800 pcs 118
- Manhole with pipeline 600 pcs 21
- Manhole with pipeline 500 pcs 13
- Rainwater collection chamber pcs 380
O
u
tle
t
Outlet
- Outlet of box culvert 2000x2000 pcs 1
No. Area System Items Unit Quantity - Outlet 1500 pcs 1 - Outlet 1200 pcs 2 - Outlet 1000 pcs 5 - Outlet 800 pcs 7 - Outlet 600 pcs 3 - Outlet 400 pcs 2
- Collection system of domestic wastewater with Grade 2, Grade 3. Table 2. Items of domestic wastewater collection systems
No. Area Network Items Unit Quantity
I Thao Dien
Grade 2
Pipeline
- Pipeline 500 m 7.663
- Pipeline 400 m 2.836
- Pipeline crossing channels m 207
Cross section with the existing facilities point 18 Manhole - Manhole 500 pcs 143 - Manhole 400 pcs 56 Grade 3 Pipeline - Pipeline 300 m 29.882
Cross section with the existing facilities point 176 Manhole - Manhole 300 pcs 872 II Nam Thao Dien Grade 2 Pipeline - Pipeline 1000 m 2.199 - Pipeline 800 m 1.241
- Pipeline crossing over channels m 62
Cross section with the existing facilities point 6 Manhole - Manhole 1000 pcs 44 - Manhole 800 pcs 26 Grade 3 Pipeline - Pipeline 300 m 12.413
Cross section with the existing facilities
point 23
Manhole
- Manhole 300 pcs 436
III Binh Trung Dong - Binh
Grade 2 Pipeline
No. Area Network Items Unit Quantity Trung Tay
-Cat lai - Pipeline 1000
m 1.340
- Pipeline 600 m 3.190
- Pipeline 500 m 1.946
- Pipeline crossing channels m 80
Cross section with the existing facilities point 30 Manhole - Manhole 1200 pcs 34 - Manhole 1000 pcs 26 - Manhole 600 pcs 66 - Manhole 500 pcs 42 Grade 3 Pipeline - Pipeline 300 m 41.165
Cross section with the existing facilities
point 102
Manhole
- Manhole 300 pcs 1.196
IV Other areas Grade 2
Pipeline - Pipeline 1500 m 1.679 - Pipeline 1200 m 3.528 - Pipeline 800 m 607 - Pipeline 600 m 1.201 - Pipeline 500 m 5.985 - Pipeline 400 m 3.740
- Pipeline crossing over channels m 840 Manhole - Manhole 1500 pcs 41 - Manhole 1200 pcs 84 - Manhole 800 pcs 16 - Manhole 600 pcs 30 - Manhole 500 pcs 142 - Manhole 400 pcs 89
V Transition pumping station station
1.1.2. Project-relevant agencies
Project-proposing agency: People’s Committee of Hochiminh City. Project Investor: Department of Transport.
Representative of the Investor: HCMC PMU of Environmental Sanitation Project. Project operation agency: HCMC Steering Center of the Urban Flood Control Program
1.2. Project implementation schedule
no content time
1 Making an investment project construction 06/2013 06/2013
2 Appraisal from the Vietnam government agencies (government departments), edit the project
08/2013
3 submit to World Bank for evaluation 10/2013
4 Union appraisal of WB travel survey in Ho Chi Minh City 11/2013
5 complete project 12/2013
6 Project Acceptance of WB 01/2014
7 tender dossier, browser to WB 03/2014
8 Bid evaluation and approval of tender results, negotiating contracts
05/2014
9 Commencement of construction 09/2014
10 Training, operating manuals, commissioning and handover of projects
01/2017
1.3. Project implementation site.
Figure 1.General planning of District 2 to 2020. 1.4. Investment for the project
1.4.1. Total investment.
Total investment is 2.724.557.618.114 vnd, including
Construction costs 1.737.551.000.000 VNĐ
Equipment costs 8.242.172.730 VNĐ
Compensation costs 4.469.445.384 VNĐ
Project management costs 12.760.000.000 VNĐ
Consultant costs for investment &
construction 58.699.000.000 VNĐ
Other costs 13.062.000.000 VNĐ
Contingency costs 889.774.000.000 VNĐ
1.4.2. Capital for the project.
The counter-part fund from the city budget is 280.710.789.031 VNĐ for Compensation, Project management, Consultant costs for investment & construction ,reserve volumes arising. The ODA fund from WB is 2.443.846.829.083 for Construction, inflation reserve.
CHAPTER II. BACKGROUND AND BASIS OF THE PROJECT 2.1. Project Background.
Hochiminh City is the biggest city as well as a key economic, cultural, scientific, technical & political center in the country. In recent years, HCMC has faced problems of a big metropolitan area with too rapid growth of population, especially the flood control and synchronous and sustainable construction of infrastructure, which is one of the six groundbreaking programs in the resolution of the IXth Congress Party in the term of 2010 ÷ 2015, "The flood program control shall
focus on the flood control in the city center (around 100 km2); flood control and prevention of in
new points in other 5 areas (around 580 km2).
In order to solve the flood condition in the city, the city has focused on implementation of the measures as follows:
- The master drainage & sewage planning of the city up to 2020 which is financed by JICA for implementation (Hereinafter referred to JICA planning) and approved by the Prime Minister in Decision no. 752/QĐ-TTg dated 19/6/2001).
- The irrigation planning for flood control for HCMC prepared by the Ministry of Agriculture and Rural Development and approved by the Prime Minister in Decision no. 1547/QĐ-TTg dated 28/10/2008.
Besides, based on the approved drainage plan the city has called for and used ODA funds in recent years for the 4 prioritized drainage & sewage projects for the flood control and environmental improvement in the city center, including:
+ The Ho Chi Minh City Environmental Sanitation (Nhieu Loc-Thi Nghe Basin) Project + Water Environment Improvement Project for Tau Hu – Ben Nghe – Doi Channel – Te Channel basin
+ The HCMC Environmental Sanitation Project (Hang Bang Sub-project) + The Tan Hoa - Lo Gom Channel Sanitation and Urban Upgrading Project
In addition, the phase 1 of the Project of Water drainage and environment improvement alongside Tham Luong -Ben Cat - Rach Nuoc Len (including 3 partial projects) has been carried out in accordance with the approval of the city and the phase 2 of the project is now being implemented and called for investment.
The HCMC Environmental Sanitary Project – Phase 2 in District 2 has been implemented with loans from OAD of WB and budget funds of HCMC with the total investment of 480 million USD. The Ho Chi Minh City Environmental Sanitation (Nhieu Loc-Thi Nghe Basin) Project Management Unit under HCMC Steering Center of the Urban Flood Control Program – the investor shall submit documents to HCMC PC for approval and then submit WB. The construction of the project is expected to be commenced and ready for operation in 2019.
2.2. Basis for identification of the project necessary
2.2.1. Macro environment and development policies of the country.
District 2 is one of the districts located in the North East of Hochiminh City and adjacent: To Thu Duc District on the north.
To Sai Gon River on the South separating the district with District 7, to Nha Be River separating with Nhon Trach District, Dong Nai Province.
To Sai Gon River on the East separating with Binh Thanh District, District 1 and District 4 in order from the North to the South.
To District 9 on the East.
There are 11 districts and 51 residential quarters – hamlets, 562 residential groups, in which Thanh My Loi Ward is the largest area of 1325.44 ha, accounting for 26.41% and Thu Thiem Ward is the smallest area of 150.42 ha, accounting for 3.0%.
The genera, objectives of the socio-economic development of the district in the period of 2011 ÷ 2015 are to achieve the rapid and sustainable economic growth and enhance the development potentials for the country. The city is striving to achieve the following objectives: GDP growth rate is 7 ÷ 8% / year on the average of 5 years, the reduction of poverty rate is 2 ÷ 3%/ year as well as the institution of the market economy shall be complete and environment of business and investment shall be equal, transparent, stable in order to release difficulties and promote investment and development of production and business.
Promote the advantages and strength of sectors and regions, especially focusing on the development and production of highly added-value products. Develop agriculture based on promoting the comparative advantages of regions and localities. Encourage the development of different economic sectors in parallel with continuing innovation and improvement of economic efficiency of state-own sectors in order to play as the decisive role in the market economy with socialist orientation. At the same time, all favorable conditions shall be facilitated to develop the private sector and enterprises with foreign investment.
The main objectives in the period is to increase the average GDP growth rate of 7% ÷ 8%, the export growth rate on average of 12%, the estimated national budget of around 22 ÷ 23% and the investment rate for development of about 40 ÷ 41% of GDP. The five experienced lessons to cope with the global finance crisis were drafted.
The economic plan in the 2011 ÷ 2015 was prepared in accordance with socio-economic and environment condition. Up to the year of 2015, the number of trained workers will account for 55% of the total population, the poverty rate will reduce 2%/year, and the unemployed rate will reduced to 4%. Regarding the development of urban infrastructure and residential area, the objectives is to modernize and develop the infrastructure system in urban area, to improve water supply system and to supply water sufficiently for the city and industrial zones.
C AÛNG P HU Ù HÖ ÕU 2 1a 22 1a 1 K 13 S UO ÁI T IE ÂN K H U D U LÒCH
V AÊ N HO ÙA D AÂ N TO ÄC C O Â N G V I E Â N LÒCH SÖÛ T T T M & ÑT MÔÙI L O N G BÌNH G A ME TRO S A Â N GOLF T HU Û ÑÖ ÙC S A Â N GOLF Ñ AÏ I HO ÏC K IE ÁN T RU ÙC L O N G BÌNH T T T M & ÑT MÔÙI V Ö Ô Ø N DÖØA T T Ñ A Ø O TAÏO Ñ H C H U Y E Â N NGAØNH T R U N G T A Â M T H ÖÔNG MAÏI T AÂN SÔ N N HAÁT S AÂN BAY A N HAÏ K HU CN
K HU COÂNG NGH EÄ CAO
K HU C OÂNG N GH IE ÄP TAÂN PHUÙ TRUNG
543 HA
913HA
K CN LEÂ MIN H XUAÂ800HA N
K CN TAÂN TH ÔÙI HIEÄ29HA P
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K HU D AÂN CÖ V AØ LAØNG NGHEÀ
456HA K CN V ÓN H LOÄC 110HA K CN TAÂN BÌNH K CN TAÂN TA .O 381HA K CN POU CHEN 56HA K CN PH ON G PHUÙ154HA K CN LIN H TR UNG 122HA
K CN B AÉC TH UÛ200HA ÑÖÙC
22HA K CN P HUÙ HÖÕU 147HA K CN P HU Ù MYÕ 147HA K HU CN AN PHUÙ K HU C N NH Ò XUAÂN 105 HA K HU C N TA ÂN THÔ ÙI N HÌ 120 HA
K CN TAÂN TH ÔÙI NH AÁT
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C AÀU PH UÙ MYÕ
C AÀU BÌ NH K HA ÙNH G A SA ØI G OØN
C AÀU PH UÙ LONG
T A M BÌNH
C AÀU PH ÖÔ ÙC K HAÙNH B ÌNH CH AÙNH
G A TA ÂN K IEÂN
C AÛNG D AÀU NH AØ BEØ MIE ÀN T AÂY
K YÙ T HU ÛB EÁN XE OÂN
C AÛNG C AÙT LAÙI
C AÀU NH ÔN T RA ÏC H II C AÀU NH ÔN T RA ÏC H I G A TH UÛ T HI EÂM C AÀ U TH UÛ T HI EÂ M III C AÀU THUÛ T HIEÂM I B EÁN XE B EÁN XE C HÔ Ï LÔÙN B EÁN XE MIE ÀN ÑOÂNG B EÁN XE X UY EÂN AÙ A N SÖÔNG B EÁN XE G A VÓNH L OÄC H ÖN G HOØA ÑEÂPO Â ME Â TROÂ L ÔÏI I C AÀU BÌNH L ÔÏ I I I, III C AÀU BÌNH T RIEÄU I, II C AÀU BÌ NH G A BÌ NH T RI EÄU Q UÔ ÙI C AÀU BÌNH G A BIEÂN HOØA G A BÌ NH T HA ÉNG P HU Ù LO NG MÔÙC AÀUI C AÀU B ÌN H PH ÖÔÙC AÀUC I, II ÑEÂPOÂ
B EÁN PH AÂN (T HÔØI AN) G A TA ÂN T HÔ ÙI H IEÄP
C AÛNG D AÀU PE TE CHIM G A BÌ NH
B EÁN XE
K HU Ñ OÂ THÒ MÔÙI NA M SA ØI GOØN
C AÀU SA ØI GOØN
B E Á N T A Ø U KHAÙCH N H A Ø ROÀNG
C AÀU SA ØI G OØN II
K YÙ HIEÄU :
RANH QUAÄN HUYEÄN
ÑAÁT GIAO THOÂNG HIEÄN HÖÕU
RANH TÆNH, THAØNH PHOÁ
ÑAÁT CAÙC KHU ÑAÀU M OÁI HAÏ TAÀNG KYÕ THUAÄT
ÑAÁT COÂNG NGHIEÄP
ÑAÁT DU L ÒCH NGHÆ DÖÔÕNG
ÑAÁT GIAÙO DUÏC
ÑAÁT NOÂNG NGHIEÄP
ÑAÁT ÔÛ , ÑÔN VÒ ÔÛ , KHU ÔÛ HIEÄN HÖÕU
ÑAÁT CAÂY XANH COÂNG VIEÂN
ÑAÁT LAØNG NGHEÀ
ÑAÁT TRUNG TAÂM COÂNG COÄNG HIEÄN HÖÕU
ÑAÁT TRUNG TAÂM COÂNG COÄNG PHAÙT TRIEÅN MÔÙI
ÑAÁT ÔÛ , ÑÔN VÒ ÔÛ , KHU ÔÛ PHAÙT TRIEÅN MÔÙI
ÑAÁT RÖØNG - BAÛO TOÀN
ÑAÁT GIAO THOÂNG DÖÏ KIEÁN PHAÙT TRIEÅN
SOÂNG RAÏCH
KHU ÑOÂ THÒ MÔÙI
ÑAÁT CAÂY XANH CAÛNH QUAN
RANH ÑIEÀU CHÆNH QUY HOAÏCH
KHU ÑAÁT QUY HOAÏCH
SÔ ÑOÀ
VÒ TRÍ & MOÁ
I LIEÂ
N HEÄ
VUØ
NG
ÑIEÀ
U CHÆ
NH QUY HOAÏCH CHUNG XAÂ
Y DÖÏNG QUAÄ
N 2 ÑEÁ
N NAÊ
M 2020
QUAÄN 4 QUAÄN 1 QUAÄN 5 QUAÄN TAÂN BÌNH QUAÄN 10 THAØNH PHOÁ HOÀ CHÍ MINH TRUNG TAÂM T AÂN THUAÄN CHEÁ XUAÁK HU T THUÛ ÑÖÙC QUAÄN 9 QUAÄN BÌNH THAÏNH QUAÄN M ÔÙI NAM SAØI GOØN KHU ÑOÂ THÒ 4 QUAÄN
VÒ TRÍ KHU ÑAÁT QUY HOAÏCH
QUAÄN 2
K HU CN CAÙT LAÙI K HU TD TT RA ÏCH C HIEÁC
K HU ÑOÂ TH Ò M ÔÙI TH UÛ THIEÂM
TÆ L EÄ: 1 / 50.000
0 1000 2000 5000
SÔ ÑOÀ VÒ TRÍ & MOÁI LIEÂN HEÄ VUØNG Figure 2. General layout of District 2
2.2.2. Project conditions and background. a. Sector
Drainage & sewage and environmental sanitary are still a very pressing matter in the socio-economic development in Vietnam causing a lot challenges for the Government and water sector. The wastewater collection for treatment is not satisfied owning to the reasons that the discharge system is used for both wastewater and rainwater. Regarding the institutional and financial terms, Ho Chi Minh City Urban Environment Co., Ltd and Ho Chi Minh City Urban Drainage Company Ltd are not as strong as Saigon Water Supply Company. This is one of the big challenges about the capacity in settling the problems of the urban sanitary. The establishment of loss-profit mechanism in service provision, which is based on the revenue, is very necessary and private sectors can be employed to do some assigned work.
Based on the actual conditions, the investment and development of water supply and drainage & sewage systems, especially the wastewater collection and treatment in accordance with the regulations before discharging to the common sewer are still the requirements of the society. In the condition, an orientation for development of water supply and drainage & sewage for urban areas and industrial zones is very essential.
In 1999, the Decision No 35/1999/QD-TTg dated March 5, 1999 on National Orientation on drainage development in urban areas by 2020 was signed by the Prime Minister. Regarding the urban drainage & sewage, the Government was very concerned and decided that 20 urban areas were invested with ODA funds and budget to rehabilitate and construct new drainage & sewage and sanitary systems. In addition, policies and mechanisms for drainage & sewage are being renovated, and many drainage companies are also reorganized and are no longer subject to the subsidiary mechanism and switched from stated-own companies to the limited companies with different business lines. Drainage & Sewage facilities are the public works and enterprises operating in the sector shall follow the ordering mechanism with the relevant authorities in order to be more active at work, especially in terms of finance.
The Law on Environment no. 52/2005/QH11 of the Socialist Republic of Vietnam passed by the Nation Assembly and effective from 01st July 2006, as a replacement for the Law on Environment in 1993 is very important. Then, the Government issued Decree no. 88/2007/ND-CP dated 28 January 05 , 2007 of the Government on urban and industrial park water drainage. The Decree no. 04/2007NĐ-CP dated 08/1/2007 of the Government on Amending and supplementing a number of articles of the Government's Decree No. 67/2003/NĐ-CP was issued on 13th June 2093 by the Government on environmental protection charges for waste water.
Furthermore, on 20th November 2009 the Prime Minister has Decision no. 1930/QĐ-TTg approving orientations for development of water drainage in Vietnamese urban centers and industrial parks up to 2050
According to the orientation for development of water drainage in Vietnamese urban centers and industrial parks up to 2025 and vision to 2050, the drainage & sewage is the public service, which is encouraged by the Government for local and foreign organizations and individuals from different economic sectors to participate in investment, construction and operation of drainage & sewage system in accordance with the legal regulations of Vietnam on investment, construction and operation of drainage & sewage systems. The drainage & sewage system should be constructed synchronously in order to ensure the complete process from collection, transfer and treatment for each area; the common drainage system shall be provided for the urban areas with sewers and separate drainage system shall be provided for industrial zones, high tech zones, processing zones, and new urban areas, small urban areas, which have not been provided with the drainage system;
the scattered industrial factories and service facilities having toxic wastewater must have local wastewater before discharge to the common drainage system; the key works must be invested according to the investment phases with suitable technology; the involvement of private sectors for the construction and operation of drainage system shall be implemented; the polluters must pay for the treatment and discharge fee in order to maintain and operate the system as well as return for the investment costs.
Regarding the drainage system, the rainwater discharge and flood reduction in the rainy season in the urban areas of grade II are priotized issues for settlement in 2015; the service coverage of the drainage system shall be increase from 50-60% to 70-80%. By 2025, the food shall be eliminated fully in the urban area. Regarding the sewage system, the urban areas from grade IV shall be provided with central domestic wastewater treatment system. The ratio of collected and treated domestic wastewater shall be 70-80% and meet the regulations after treatment. The central or dispersed treatment plants in the residential areas shall operate continuously and the wastewater after treatment shall meet the regulations.
According to the vision to 2050, the urban areas from grade IV shall be constructed with a completed drainage & sewage system, including rainfall discharge, wastewater collection and treatment. The wastewater from small urban area (grade 5) and craft villages shall be collected and treated at the central or dispersed wastewater treatment system. The flood must be solved thoroughly and all wastewater must be treatment before discharging to the environment. The proposed solution is to complete the legal system about drainage & sewage. The central cities must prepare and approve the master plan of drainage & sewage systems, define the flow charts of the systems, discharge basins and receiving bodies, define the investors and investment phases. ODA funds shall be priotized for the investment and development of urban drainage & sewage system, especially the large urban areas and urban area affected by the natural disasters. In addition, the investment from local and foreign individuals and organizations shall be moiled for the investment and construction of drainage & sewage system, especially for the wastewater treatment with different types.
b. Regions (localities) Strategic policies of HCMC.
The policy objectives and orientations of the city for socio-economic development are represented very clearly with the policies for environmental improvement and social infrastructure improvement in order to meet the economic development.
To promote industrialization, modernization, mobilize and exploit domestic resources, attract and use effectively the external resources, improve the rate and quality of growth in each sector, business, region or locality in order that the society and economy develop sustainably and strongly.
To improve investment in the socio-economic infrastructure, improve quality, effectiveness and capacity of economic integration, to create the improvement in science & technology, education & training, employment opportunities, poverty reduction as well as living standard and strengthen politic stability and national defense & security.
Improve public awareness about environmental protection, etc. Orientations for HCMC development plan
Based on revision of the master planning of HCMC to 2025 approved in Decision no. 24/QĐ-TTg dated 06/01/2010 by the Prime Minister on the master construction planning of HCMC to 2025, the city shall continue to play an important role in the region as the regional, national and world-wide key economic zone. The construction and sustainable development shall be
implemented according to the economic development in combination with preservation of historical heritage, culture and environmental protection.
According to the master planning of HCMC to 2020, regarding the surface water discharging system, it is necessary to arrange channel & sewer systems sufficiently to discharge water in the catchment with the controlled hydrological conditions and arrange the regulating lakes at the highland area. The wetlands should be kept as much as possible at the low land areas to retain water. It is necessary to focus on the criteria of green trees and grass in accordance with the regulations and reduce the surface flow, etc. Regarding the sewage system, JICA planning which is approved by the Prime Minister under Decision no. 752/QĐ-TTg dated 19/6/2001 shall be implemented gradually. The new urban areas in District shall be studied and constructed with a collecting system and connection with the city interceptors.
c. Development planning.
According to the master drainage & sewage planning of HCMC to 2020 approved by the Prime Minister under Decision no. 752/QĐ-TTg dated 19/06/2001;
District 2 is a new urban area along the eastern catchment of Sai Gon. At the short term, common sewer shall be constructed. During the urban development, land shall be reserved for construction of separate drainage & sewage system if possible.
According to the Project for Revision of HCMC Master planned, approved by the Prime Minister under Decision no. 24/QĐ-TTg dated 6-01-2010:
- Regarding the existing city center, the common sewer will be used continuously (for wastewater & rainwater). The dirty wastewater shall be separated from the common sewer by a combined sewer overflow (CSO) and transferred to an interceptor for treatment at the wastewater treatment plan of each catchment. The rainwater shall be discharged directly to channels.
Regarding the newly constructed area, it is necessary to construct a separate wastewater collection system and then wastewater shall be transferred to the local wastewater treatment plant or central wastewater treatment plant of the city.
The wastewater treatment must meet the requirement as set forth in the Master plan as follows: BOD5 ≤ 50 mg/L in the period to 2020 and BOD5 ≤ 20 mg/L at period from 2020. Other parameters about the wastewater quality after treatment must follow the Regulation (TCVN 7222-2002) and the temporary treatment station must follow the Standard QCVN 14:2008/ BTNMT.
In District 2, there is a central wastewater treatment plan below Phu My Bridge, adjacent to Dong Nai River with area of 40 ha and treatment capacity of 480,000m3/day in the Phase 1 and 830.000 m3/day in the Phase 2 with the main transmission line from Binh Thanh District through Sai Gon River and along Ca Tre Lon Channel, Sai Gon River through Road no. 9 to the central wastewater treatment plant.
2.2.3. Market
1. Regarding the demand for flood control and drainage.
HCMC is one of the cities affected significant by the climate change. Over the years, there are changes in rain condition in HCMC as the rainy season comes later and lasts longer with greater intensity. According to statistical data of Southern meteorological station, there was only a heavy rain with the precipitation of 100 mm in 3 hours from 1950 ÷ 2006 in the city. However, there have been from three to four raining times annually with the precipitation higher than 100 mm in 3 hours from 2006 up to now.
Besides, changes in tidal level in Sai Gon in the recent years are very warning. According to the hydrological monitoring of the Southern meteorological station, the water level at the highest tide at Phu Van hydrographic station has been increasing in the recent years. According to the monitoring data, the highest tide in Phu An Station on Sai Gon River is 1.55 m, higher than the historical highest tide of 1.54 in 49 years ago. The highest tide was 1.56, 1.57 and 1.58 in 2009, 2010 and 2011, respectively. Now the highest tide is 1.61 in September 2012.
HCMC is located at the downstream of Dong Nai River and Van Co River, which is the transition part from the hilly region of South East area. The terrain elevation varies from +30 m e (northern region of Cu Chi, Thu Duc) to +0.5 m elevation (the South of District 7, Nha Be District, Can Gio District, Ho Chi Minh City). The slope is lower from the North East North to the South West West.
It is possible to divide the study area into 4 terrains:
- The hilly area is located mainly on the north of Cu Chi, North of Thu Duc, Hoc Mon, Tan Binh, Go Vap. The topography of this area is complex, uneven. The ground elevation varies from 2 m ÷ 33m. The highest locations are Long Binh Hill and Long Thanh My Hill (30m). Areas in Hoc Mon, Binh Chanh, Tan Binh, Go Vap is gradually inclining and less even with the elevation from 3.0 ÷ 7.0 m.
- The wetland area is located on the West and South West of the city in the surrounding area of Thay Cai – An Ha – Rach Tra Channel. The natural height is rather low 0.3 ÷ 0.4m. The area is also the cross section of different water flows.
- The lowland area is located on the south and southeast of Cu Chi, on the East of Hoc Mon, on the South of Thu Duc, Nha Be, on the South of Binh Chanh, District 8 in Ho Chi Minh City and Can Giuoc & Can Duoc in Long An Province. The terrain is relatively low and flat, divided by interlacing network of rivers. The ground elevation varies from 0.3 ÷ 1.0 m, and the average is 0.5 ÷ 0.8 m. Therefore, the area is governed by semi-diurnal regime of rivers and very convenient for using the watercourse for irritation for improvement of land and environment condition.
- Coastal area is the southernmost land and adjacent to the sea. The terrain is flat and the average ground elevation is 0.7 ÷ 0.8 m. However, the thick sand dunes along the beach has a relative elevation from 1.5 to 2.5 m. The region is divided by interlacing channel, forming many large and small islands. The impact of the tide here is very strong. The table below shows the distribution of the land area in the study based on the elevation.
Table 3. The area divided based on the elevation at the downstream of Sai Gon – Dong Nai
No. Elevation
Right side of Sai Gon River
Left side of Sai Gon
– Nha Be River Total
Area (ha) Ratio (%) Area (ha) Ratio (%) Area (ha) Ratio (%)
1 ≥ 17.5 285 0.13 1,843 2.23 2,128 0.71 2 ≥ 15.0 2,636 1.21 2,143 2.59 4,779 1.59 3 ≥ 12.5 6,184 2.84 2,469 2.98 8,653 2.88 4 ≥ 10.0 13,026 5.98 2,849 3.44 15,857 5.28 5 ≥ 8.0 22,414 10.28 3,304 3.99 25,718 8.55 6 ≥ 5.0 31,863 14.62 3,893 4.71 35,756 11.89 7 ≥ 2.0 60,957 27.97 4,839 5.85 65,796 21.88
No. Elevation
Right side of Sai Gon River
Left side of Sai Gon
– Nha Be River Total
Area (ha) Ratio (%) Area (ha) Ratio (%) Area (ha) Ratio (%)
8 < 2.0 157,015 72.03 77,889 94.15 234,904 78.12
9 Total 217,952 100 82,728 100 300,700 100
Risk of flood owning to sea level rise.
The terrain in HCMC is low with the elevation less than 2.0 m accounting for 72.03%. The highest water level on the Saigon River at Phu An station is now measured at Phu An hydrological station on the Saigon river in 2008 is 1.55 m which is higher than record tide peak of 1.54 m existed 49 years earlier, in 2009 tide peak reached 1.56 m; in 2010 and 2011 tide peak reached 1.57 m and 1.58 m respectively; the current highest tide peak is 1.61 appeared in September 2012
During hydrographic measure for projects under the planning projects for flood control for Ho Chi Minh City, it is showed that there is a small difference in nature between the water level measured at the hydrographic station and one measured in accordance with the national elevation system VN2000. This difference is about 23 cm (according to the Official Letter no. 497/DDBDVN-CNTD of Mapping & measuring Department of Vietnam, there is a settlement of elevation marks of grade I in HCMC). Thus, the actual high tide (compared to terrain height) is 1.84 m. Thus if the sea level rises from 23 ÷ 27 cm (B2 scenario) to the middle of Century 21th, the entire area with terrain height less than 2.0 m accounting for 72.03% of the total area in City Ho Chi Minh City will be submerged in water
From the above analysis, it is seen that HCMC is one of the metropolitan area having risks of being flooded due to heavy rains and high tide, especially in the climate change condition and seawater level rise. The construction of anti-flood and irrigation shall be necessary to meet the socio-economic development of the city.
2. Demand for wastewater collection.
The natural area of District 2 in HCMC is 5017.96 ha, inclusive of 11 wards with 51 residential areas – hamlets and 562 residential groups with the total population of 133,015 persons in 2012. According to planning, the pollution of the District 2 will be 650,000 persons in 2020.
According to Decision no. 24/QĐ/TTg dated 06/01/2010 by the Prime Minister on the HCMC master construction planning to 2025, wastewater criteria is in accordance with equivalent water supply standards for each type; the penetrated amount into the sewers shall be 10% of the daily flow on average. The total flow of wastewater is 3.15 – 3.2 million m3/day
Table 4. Water supply demand and of the city to 2025.
No
. Water demand
Water supply norm ( L/person/day)
Existing city center Existing city center Existing city center
2010 2015 2025 2010 2015 2025 2010 2015 2025
1 Domestic use 180 200 200 180 200 200 180 180 200
2 Public works 36 40 40 18 30 30 20 20 25
3 Visitors 35 35 35 25 25 30 20 25 30
4 Craft villages &
No
. Water demand
Water supply norm ( L/person/day)
Existing city center Existing city center Existing city center
2010 2015 2025 2010 2015 2025 2010 2015 2025
Total 269 290 290 238 270 275 236 243 273
Thus, District 2 is located in the new urban areas with the demand for water supply of 200 l /person/day, the demand for domestic wastewater is 180 liters / person / day (10% due to non-revenue water). Therefore, the total amount of domestic wastewater in District 2 is 23,944.5 m3/day
now and 117,000 m3/day in 2025. If the wastewater is not collected and treated but discharged
directly to the environment to drainage systems, it shall be a risk for environmental pollution in surrounding areas, especially the water environment, affecting the health of residents.
Basic for the project preparation.
Legal regulations of the Government.
Law on Construction no. 16/2003/QH passed by the National Assembly of the Socialist Republic of Vietnam on 26/11/2003;
Decree no. 15/2013/NĐ-CP dated 6/02/2013 by the Government on construction quality management;
Decree no. 85/2009/NĐ-CP dated 15/10/2009 by the Government guiding the Bidding Law and the selection of construction contractors under the Construction Law.
Decree no. 112/2009/NĐ-CP dated 14/12/2009 by the Government on management of work construction investment expenses
Decree no. 67/2003/NĐ-CP dated 13/6/2003 by the Government on environmental protection charges for waste water and Decree no. 04/2007/NĐ-CP dated 8/1/2007 amending and supplementing a number of articles of the Government's Decree 67/2003/ND-CP.
Decision no. 1930/QĐ-TTg dated 20/11/2009 by the Prime Minster approving orientations for development of water drainage in Vietnamese urban centers and industrial parks up to 2050
Decision no. 752/QĐ/TTg dated 19/6/2001 by the Prime Minster on the approval of the HCMC master plan of the drainage & sewage system to 2020;
Decision no. 1547/QĐ/TTg dated 28/10/2008 by the Prime Minster on the approval of irrigation planning for flood control in HCMC;
Decision no. 24/QĐ/TTg dated 06/01/2010 by the Prime Minster on the Master construction planning of HCMC to 2025;
Circular no. 04/2010/TT-BXD dated 26/05/2010 by the Ministry of Construction guiding formulation and management of costs of investment in work construction;
Official Letter no. 957/BXD-VP dated 29/09/2009 by the Ministry of Construction announcing about the norms of project management costs and consultancy costs for investment and construction.
Vietnam Building Code, Volume 1 and volume 3, promulgated in the Decision no. /BXD-CSXD dated 14/12/1996 by the Ministry of Construction.
Official Letter no. 7654/TC-TCDN dated 22/06/2005 by the Ministry of Finance sent to the Ministry of Planning and Investment (Department of Economic Affairs) about comments on the project for drainage & sewage network expansion in Ho Chi Minh City and registration for loans from the World Bank;
Official Letter no. 7600/BKH-KTĐN by the Ministry of Planning & Investment dated 02/ 11/2005 on the usage of WB loans for the project for drainage & sewage network expansion in Ho Chi Minh City ;
Official Letter no. 6795/BTC-TCĐN dated 12/06/2013 by the Ministry of Finance about the comments (second) on the adjustment of drainage & sewage in HCMC with the loan of WB;
Official Letter no. 5136/BKH-KTDN on 15/07/2013 by the Ministry of Planning and Investment about comments on the adjustment in terms of project scale and investment of the Project for drainage & sewage network expansion in Ho Chi Minh City and connection with households in District 2, HCMC financed by WB ;
Decision no. 33/2007/QD-UBND dated 05/09/2007 by People’s Committee of HCMC on authorization for management of project investment and construction;
Legal documents of People’s Committee of HCMC:
Decision no. 33/2007/QĐ-UBND dated 05/09/2007 by People’s Committee on the authorization for management of construction project;
Statistical Yearbook of Ho Chi Minh City in 2012; Standards & Regulations:
Standard TCXDVN 33:2006 - Water Supply - Distribution System and Facilities;
Standard TCXDVN 7957:2008 – Drainage and sewerage - External Networks and Facilities;
Regulation QCVN 14/2008/BTNMT: National technical regulation on domestic wastewater;
Regulation QCVN 24/2009/BTNMT: National Technical Regulation on Industrial Wastewater;
TCVN 7222/2002: General environmental requirements for central domestic wastewater treatment plants;
Other data and information:
Project for Modification of Master Construction Plan of HCMC to 2025;
Documents and Resolutions of IXth Party Congress of District 2 in the term of 2010 - 2015 provided by the People's Committee of District 2 in 2010;
The socio-economic development plan of the District 2 in 2010 by the Institute of Economics of Ho Chi Minh City (now Ho Chi Minh City Institute for Development Studies);
The land use planning of District 2 to 2010 and orientations towards 2020 and the 5-year land use plan (2006-2010);
The sector planning approved by the Prime Minister, such as power supply, water supply, drainage & sewage and transportation;
The sector planning approved by People’s Committee of HCMC such as culture & information, sports, education and training, green parks, supermarkets, commercial centers, and health care, etc.
HCMC Environmental management strategy in 2010 by the Department of Natural Resources and Environment;
The Socio-economic report of District 2 over the years and the socio-economic development plan in 2010;
The detailed master plans (zoning) with the scale of 1/2000 and construction project 1/500 in District 2 which has been studies, adjusted and approved;
Statistical Yearbooks of the Department of Statistics and Ho Chi Minh City and Statistical Office of District 2 in recent years;
The documentation and data status by the People's Committee and the sectors & departments of District 2 provided additional research during the project;
The existing Documents and data prepared and revised by People’s Committee and departments of District 2 during the project study.
Maps:
The zoning maps of general adjustment of Master Plan 2025 by the City Planning Institute in collaboration with the City Building Consultants Nikken Sekkei (Japan) implementation.
The master planning maps of District 2, approved in accordance with Decision no. 6707/QĐ-UBND dated 29/12/2012 by the People’s Committee of Hochiminh City.
The existing terrain maps made with digital technology by Cadastral and Construction Surveying Company (Ministry of Natural Resources and Environment) made in June 2004 with the VN2000 national coordinate system and provided by HCMC Department of Natural Resources and Environment)
The Urban detailed planning map (zoning) with the scale of 1/2000, which was approved and provided by Department of Planning & Architecture & Urban Management Division, up to May 2013.
The Projects for development and infrastructure construction (especially transport) which have been implemented in District 2.
2.3. Project objectives
2.3.1. General objectives of the project
- Improving environmental condition in HCMC through the construction of drainage & sewage works, sanitary and wastewater treatment works.
- Increase the durability of urban infrastructure and services in HCMC. - Reduce environmental pollution for urban area.
- Increase the durability of the urban infrastructure and service in HCMC. - Reduce environmental pollution for the urban area.
- Minimize the epidemics caused by the stagnant and untreated water. The rainwater and wastewater in most residential areas of the city will be discharged properly to eliminate negative impacts on the people's health and activities of the city caused by water discharge.
- Improve awareness about the creation and preservation of a salubrious environment. Strengthen capacity of management – operational regarding drainage & sewage system of Ho Chi Minh City Urban Drainage Company Ltd.
- Create a favorable condition to attract more investors and people to live in new urban areas as well as attract investors in terms of production and business to invest in industrial zones & tourism areas.
2.3.2. Specific objectives of the project
Construct the drainage & sewage system in District 2, Hochiminh City in order to meet socio-economic development planning of the city in the period of 2013 ÷ 2020, including:
- Construct rainwater and wastewater collection systems in District 2, HCMC to reduce the flood condition in heavy rains.
- Install gates at the outlets of the drainage system in order to reduce the flood condition in case of high tide and increase capacity of rainwater reserve in the pipeline system. - Construct domestic wastewater system at the secondary and third grade from
households and public works to connect with the common wastewater collection pipeline of the city and transfer to the wastewater treatment plant in order to reduce water pollution source and improve health of the community as well as contribute to the living condition of the people.
- Support to construct domestic wastewater system and septic tank for households having low income in District 2 to connect with the wastewater collection network with grade 3.
2.4. Adaptability and orientation of the drainage & sewage planning for urban areas and industrial zones in Vietnam.
2.4.1. Orientation for the drainage & sewage development in urban areas and industrial zones in Vietnam.
In the year of 1998, the national program for the fresh water, sanitary of Vietnam was carried out, and it has a very clear and effective results. The number of residents accessing to fresh water and sanitary condition have been improved significantly.
Decision no. 1930/QĐ-TTg dated 20/11/2009 by the Prime Minster approving orientations for development of water drainage in Vietnamese urban centers and industrial parks up to 2025 and vision to 2050 with the following contents:
- The drainage & sewage is the public service, which is encouraged by the Government for local and foreign organizations and individuals from different economic sectors to participate in investment.
- The drainage & sewage system should be constructed synchronously in order to ensure the complete process from collection, transfer and treatment for each basin; the construction of the drainage & sewage systems is the prioritized for the big urban areas (especially the grade I and II), or the tourism centers or urban areas having significant effects on environment.
- The scattered industrial factories and service facilities having toxic wastewater must have local wastewater before discharge to the common drainage system.
- The key works must be invested according to the investment phases with suitable technology and capacity, the newly constructed and rehabilitated sewers must meet the capacity of the rainwater and wastewater discharge in accordance with the estimated drainage & sewage planning in the long term.
- The wastewater treatment technology is selected in accordance with the natural condition, scale, urban features and economic condition. It is advised and encouraged to apply the technology and equipment, which are studied and produced domestically.
- Local and foreign private resources for the construction and operation of drainage & sewage system shall be mobilized
2.4.2. The master plan of urban drainage & sewage system of HCMC made by JICA.
In 1999, Japan International Cooperation Agency (JICA) in the close cooperation with the relevant agencies to study and prepare a master plan for urban drainage & sewerage, including
flood control and drainage & sewage of Ho Chi Minh city. The master plan has been approved by the Prime Minister in the Decision dated 19.06.2001 752/QD-TTg, hereinafter referred to the JICA planning.
The objectives are set forth in the study:
- Develop master plan towards 2020 for improvement of urban drainage and sewage systems in Ho Chi Minh City and identification of priority projects.
- Conduct a feasible study, which is a priority in the master plan.
- Perform technology transfer for personnel of the Government during the study.
The master plan is prepared for the development in 20 years in order to meet the population increase and socio-economic condition as estimated in 2020. A package of integrated measures for the urban drainage & sewage system, in which the drainage & sewage system and existing facilities are utilized in order to minimize the investment costs, is proposed.
Figure 3. Zoning area of wastewater discharge basin in accordance with JICA Planning The Study is done in HCMC Central area with the total area 140 km2 of the current urban
areas and 510 km2 of the surround areas. According the study, the construction of Dau Tieng works,
Tri An works, Thac Mo Works and reservoirs at Sai Gon and Dong Nai river basin shall enhance the safety for the downstream of the two rivers in 20 years until the flood re-occurs. Therefore, a continuous dyke along the two rivers to control flood is not necessary, except for the reclamation to protect a limited urban area.
Regarding the drainage & sewage in urban areas, the studied area is divided into 6 drainage areas (North, North East, South East, Central, West, South) based on the condition of terrains, land
usage, urbanization, urban drainage system and flood, etc. The measures proposed in the master plan are:
- Channel improvement
- Reduce the speed of natural basin establishment - Drainage Pump System
- Water retention ponds
- Drainage Pipe / Channel Development
The channels in the study area with the river basins smaller than 30 km2 were proposed to improve to respond to the flood during last 5 years and ones with the catchment more than 30 km2
shall be improved to respond to the flood in 10 years. The three areas which are applied with the measures to reduce the speed of natural basin establishment (North area and one area in West area) shall be used as the low-lying paddy fields to adjust the flood flow and reduce the magnitude of channel improvements. In isolated lying areas on boundary with of the metropolitan area C, three water-pumping systems have been proposed. For new developments in higher areas like Hoc Mon in the north and Thu Duc and northeast areas (District 2 and District 9), the study also proposed a compulsory regulation on construction of water retention ponds in the developed area. The master plan also includes rehabilitation of the existing combined sewers within the city and usage of a separate drainage system in the newly developed areas.
In order to develop the drainage & sewage system, the study area is divided into 9 sub-areas in the master plan. The drainage & sewage system has been developed for 189.78 km2 (30% of the
study area) serving 5.77 million of people (78%) in 2020. In the remaining area, the treatment system shall be arranged for every private house or construction works, including a septic tank and anaerobic filter.
The JICA planning has been considered a key project in terms of water environmental sanitary (phase 1: Nhieu Loc – Thi Nghe basin), Doi Channel – Te Channel, Hang Bang Channel, Tan Hoa – Lo Gom, Tham Luong – Ben Cat.
The scope of the environmental sanitary project – phase 2 includes interceptors and a wastewater treatment plant for Nhieu Loc – Thi Nghe Basin in combination with District 2, and sewers in order to control flood and reduce pollution for 02 basins as provided in the JICA planning.
2.4.3 Conformability with the flood control of HCMC
According to the Decision no. 1547/QD/TTg dated 28/10/2008 by the Prime Minister approving the HCMC flood control master plan, the natural area in HCMC is 209,500 ha and adjacent areas, including 3 water control regions, including:
- Region I: Includes the entire area on the right bank of Sai Gon – Nha Be River, including the existing central area, in which there are many pressing problems about irrigation and environment in the urban areas, South area of the city and a part of Long An Province (the left bank of Van Co River and Vam Co Dong River), mainly the agricultural land and fallow land – as the key area of the planning.
- Region II includes the entire area of cross section of Dong Nai – Sai Gon River, which is the developing area. The drainage could be more favorable as it is possible to arrange anti-flood and irrigation works.
- Region III include the entire area on the left bank of Nha Be – Soai Rap river - the open biosphere where the water control facilities are possible to be built with large scales in the future,
depending on the situation of rising sea levels and changes in urban development in the south of the city.
Figure 4: Mapping planning about flood control in HCMC
The district 2 is in the region II of the HCMC flood control planning – a new urban area in which there are three sub-areas:
- Upland area (Giong Ong To Hill): no grading.
- Urban areas: mainly stretching along the south of Rach Chiec Channel, including Thao Dien, An Phu, An Khanh, Thu Thiem New Urban Area, Thanh My Loi area and Cat Lai port area: building elevation higher than 2.50 m.
- Located in the dyke area is the remaining area on the South with the building elevation higher than 2.00 m
2.4.4. Conformability with the master construction planning of HCMC
Summary about the Decision no. 24/QĐ-TTg dated 06/01/2010 by the Prime Minister on the master construction planning of HCMC to 2025
The scope of the planning: The entire area is 2,095 km2, including 19 districts and 5 sub-districts.
The feature of the planning: It is a special metropolitan area – a key major center of economy, cultural, education & training, science and technology, having an important political role. The planning objectives: the city shall be developed sustainably in combination between economic development and conservation of historical and cultural heritage and environmental protection, national security and defense.
Regarding population scale: It is estimated that there will be 10 million residents in the city in the future, in which (70 ÷ 74) percentage of the residents are living in the urban areas.
Regarding the infrastructure development: The planning is about the synchronous infrastructure development such as roads, drainage & sewage system, electrical system, information, clean water supply, etc.
Regarding the drainage planning
- Rehabilitate the drainage system in the existing central area, which is the common sewers for rainwater and wastewater and build the separate drainage & sewage system for the new areas.
- Regarding the existing urban area including 3 new districts, i.e. District 7, District 12 District and Binh Tan District and 4 sub-districts, i.e. Cu Chi, Hoc Mon, Binh Chanh and Nha Be district on the right bank of Sai Gon – Nha Be river, the drainage system shall be completed and the sewage system shall be separated with the common sewers, dredging and expanding channels in combination with other measures (temporary construction, increase of road surface level, installation of one-way gates, tidal pumping stations, etc.) shall be used to eliminate flooding situation.
- Regarding 3 new districts, i.e. District 2, District 9 and Thu Duc District on the right bank of Sai Gon – Nha Be River, the drainage & sewage system shall be separated with the channel and sewers which are sufficient to discharge water in the catchment with the controlled hydrological conditions and arrange the regulating lakes at the highland area. The wetlands should be kept as much as possible at the low land areas to retain water. It is necessary to focus on the criteria of green trees, grass in accordance with the regulations, and reduce the surface flow, etc.
- Regarding Can Gio District on the left of Nha Be – Soai Rap River: the entire channel system shall be kept and green tree area shall be developed more in order to increase the regulating capacity. It is not necessary to construct big discharging works (only arranging the sewers for small residential areas)
- Ensure corridor for the protection boundary of rivers and channels in accordance with the regulations on the waterway management.
Regarding wastewater management.
- The wastewater criteria are in accordance with equivalent water supply standards for each type; the penetrated amount into the sewers shall be 10% of the daily flow on average. The total flow of wastewater is 3.15 – 3.2 million m3/day, in which the industrial wastewater shall be 0.32 – 035 million m3/day.
- The existing common sewers for the city center in combination with combined sewer overflow (CSO) and interceptors to separate and collect wastewater) are used and the separate drainage & sewage system shall be used for the new urban area; the area located in the basin is the inner city and new urban areas with highly density of population (≥ 200 persons/ha). The remaining areas with low population density (<200 people / ha) will be developed with wastewater collection
