ENVIRONMENTAL ASSESSMENT AND ENVIRONMENTAL … · 2016. 7. 10. · Phuoc 3 industrial park .....42...

Environment Protection Committment –Water Supply System in My Phuoc Urban and IndustryEmployer: Binh Duong Water Supply Sewerage Environment Co., Ltd

BINH DUONG PROVINCIAL PEOPLE’S COMMITTEEBINH DUONG WATER SUPPLY, DRAINAGE AND ENVIRONMENT ONE

NEMBER LIMITED COMPANY-----------------------

ENVIRONMENTAL ASSESSMENT ANDENVIRONMENTAL MANAGEMENT PLAN

FOR

VIETNAM URBAN WATER SUPPLY ANDWASTEWATER PROJECT

MY PHUOC URBAN AND INDUSRIAL WATER SUPPLYSUB-PROJECT BINH DUONG PROVINCE

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CONTENT

Page

LIST OF TABLE ................................................................................................ 4LIST OF PICTURE ........................................................................................... 5SUMMARY OF CONTENTS OF ENVIRONMENT IMPACTASSESMENT REPORT .................................................................................... 81. INTRODUCING SUBPROJECT AREA AND ABOUT THESUBPROJCET ................................................................................................. 101.1 INTRODUCING SUBPROJECT AREA .................................................... 101.2 INTRODUCTION THE SUBPROJECT .................................................... 102. POLICY AND LEGAL FRAMWORK OF EIA........................................ 122.1 Regulations, legal basis of Vietnam and technical background that theproject must comply with ................................................................................... 122.2 Requirements of World Bank ...................................................................... 143. DESCRIPTION OF PROJECT .................................................................. 163.1 Project name ................................................................................................. 163.2 Project Employer........................................................................................... 163.3 Position for components of the project ........................................................ 16

3.3.1 Position of raw water pumping station and raw water transmission main.......................................................................................................................... 173.3.2 Position of water treatment plant ........................................................... 183.3.3 Position for transmission main from Tan Hiep W.T.P to booster stationand Booster station........................................................................................... 18

4. SELECTING IMPLEMENTING METHOD FOR THE SUBPROJECT............................................................................................................................. 194.1 Selecting water source................................................................................... 194. 2 Selecting construction site for components of the subproject and technologyfor the treatment plant ......................................................................................... 19

4.2.1 Intake work – raw water pumping station and raw water mains ........... 194.2.2 WATER TREATMENT PLANT ......................................................... 234.2.3 Transmission and distribution network .................................................. 294.2.4 Booster station ........................................................................................ 30

4.3 Construction investment items of water supply system in My Phuoc urban area............................................................................................................................. 30(1) Raw water pumping station .......................................................................... 30(2) Raw water transmission mains ..................................................................... 30(3) Water treatment plant ................................................................................... 30

(4) Transmission distribution pipelines .......................................................... 32(5) Booster station............................................................................................ 32

5. FOUNDATION ENVIRONMENT OF THE SUBPROJECT ................. 33


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5.1 NATURAL, ECONOMIC AND SOCIAL CONDITIONS OF THESUBPROJECT ................................................................................................... 33

5.1.1 NATURAL CONDITIONS.................................................................... 33a.Location......................................................................................................... 33b. Climate......................................................................................................... 345.1.2 ECONOMIC AND SOCIAL STATUS IN THE SUBPROJECT AREA.......................................................................................................................... 35

(1) Demographic features in wards, communes ................................................ 35(2) Economic and environment sanitary in communes/wards ........................... 35

a. Jobs and income source ............................................................................... 35b. Living standard ............................................................................................ 37c.Water use situation ....................................................................................... 37d. Health situation and health care of people .................................................. 39

(3) Cultural assets in project area ....................................................................... 415.2 ENVIRONMENT QUALITY SITUATION IN PROJECT......................... 42

5.2.1 Air quality situation ................................................................................ 425.2.2 Surface water situation in project area .................................................. 425.2.3 Sludge quality from treatment plant ....................................................... 47

6. ENVIRONMENTAL IMPACTS AND RELEVANT MEASURES OFITS MITIGATION............................................................................................ 486.1 Useful Impacts of the project ........................................................................ 51

6.2 Environmental impacts and mitigation measures during construction ofwater treatment stations....................................................................................... 51

6.2.1 Impacts and mitigation measures due to land requisitioning ................ 516.2.2 Impacts and Mitigation Measures due to plant demolishment............... 516.2.3 Impacts and mitigation measures due to flooding and subsidence ....... 516.2.4 Impacts of land from construction process and spread of dust andmitigation measures ........................................................................................ 526.2.5 Impacts due to noise during site preparation and construction andmitigation measures ........................................................................................ 536.2.6 Site Drainage........................................................................................... 546.2.7 Impacts on environment of surface water, ground water, land andmitigation measures ......................................................................................... 55

6.3 Environmental impacts and mitigation measures during construction of rawwater pumping stations, booster pump stations, water transmission main ........ 556.3.1 Impact and mitigation measures due to land requisition ......................... 55

6.3.2. Disturbance to local residents and businesses activities ....................... 566.3.3 Impacts and mitigation measures due to construction process .............. 57

6.4. Impacts and mitigation measures during operation of the treatment plant . 676.5 Impacts and minimise measures for operating transmission and distribution

system ................................................................................................................ 746.6 Urgent measures of the subproject ............................................................... 75


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7. KẾ HOẠCH QUẢN LÝ MÔI TRƯỜNG .................................................. 777.1 Environment management program under the project ................................. 777.2 Requirement on reporting and monitoring ................................................... 907.3 Supervision program .................................................................................... 90

(1) Supervise contractor .................................................................................. 90(2) ) Supervise environment quality ................................................................ 90(3) Cost estimate for environment monitoring program ................................. 93(4) Training program on environment ............................................................ 98(5) Totaling environment protection costs .................................................... 100

7.4. Organize environment supervision and reporting...................................... 1017.4.1 Organize environment supervision....................................................... 1017.4.2. Reporting ............................................................................................ 105

8. COMMUNITY CONSULTATION........................................................... 1078.1 COMMUNITY CONSULTATION AND PUBLIC INFORMATION ..... 1078.2 SUMMARY TABLE OF COMMUNITY CONSULTATION................. 108

APPENDIX 1: PROJECT MAPAPPENDIX 2: PICTURES OF PROJECTS

APPENDIX 3: A SAMPLE FORM CHECKAPPENDIX 4:COMMUNITY CONSULTATIONAPPENDIX 5:THE ENVIRONMENTAL COMMITMENT

APPENDIX 6:LOCATIONMAP OF ENVIRONMETAL MONITORI


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LIST OF TABLESPage

Table 2. 1: Safety Policy of World Bank ........................................................... 14

Table 4.1: Sample result of water in Dong Nai river ......................................... 24

Table 4.2: Comparing advantages and disadvantages of 3 options .................... 29

Table 5.1.Economic structure in wards/communes in the project ar.................. 35

Table 5.2. Average income per capita/year in wards/communes in project area............................................................................................................................. 36

Table 5.3: Poor/rich level based on households’ evaluation and investigators’evaluation in model form ................................................................................... 37

Table 5.4. Use purpose of water source classified by regions .......................... 38

Table 5.5: water and environment sanitation related diseases ........................... 39

Table 5.6: Community awareness on disease causes.......................................... 40

Table 5.7: Result of air quality measurement in residential area hamlet 6 – MyPhuoc 3 industrial park ....................................................................................... 42

Table 5.8: Analysis result of water quality in Dong Nai river ........................... 43

Table 5.9: Analysis result of sludge from Tan Hiep water treatment plant........ 47

Table 6.1: Overall Assessment Matrix of Project Environmental Impacts ...... 49

Table 6.2. Maximum noise level from operations of vehicles and mechanicalconstruction equipment ....................................................................................... 53

Table 6.3 :Emission amount caused by vehicles during leveling . ..................... 59

Table 6.4: Maximum noise level from operations of vehicles and mechanicalconstruction equipment ....................................................................................... 61

Table 6.5. Characteristics of traffic obstructing impact ..................................... 63

Table 7.1. Environment management program .................................................. 79

Table 7.2: Cost estimate for environment supervision in construction phase ... 94

Table 7.3: Cost estimate for environment supervision during operation ........... 95

Table 7.4: Training on environment.................................................................... 98

Table7.5 : Totalling environment protection costs ........................................... 100

Table 8.1: The sum of community consultation ............................................ 109


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LIST OF FIGURESPage

Figure 3.1: : General layout of Water Supply System in My Phuoc Industry andUrban .................................................................................................................. 17

Figure 3.2: Layout of raw water pumping station and raw water transmission.. 18

Figure 4.1: Intake work of Tan Hiep W.T.P ....................................................... 22

Figure4.2: Raw water pumping station of Tan Hiep W.T.P 22

Figure 4.3: Raw water transmission main on ĐT 746 road ................................ 23

Figure 4.4: Area of water treatment plant .......................................................... 23

Figure 6.1:Waste water treatment process at treatment station .......................... 72

Figure 7.1: Amendment and feedback mechanism........................................... 106


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LIST OF ABREVIATIONS

BOD Biochemical Oxygen Demand Nhu cầu oxy sinh hóa COD Chemical Oxygen Demand Nhu cầu oxy hóa học CPC Commune People’s Committee Ủy ban xã DO Dissolved Oxygen Oxy hòa tanDONRE Department of Natural

Resources and EnvironmentSở Tài nguyên và Môi trường

DPC District People’s Committee Ủy ban quận, huyện EA Environmental Assessment Đánh giá môi trường EC Environmental Consultant Tư vấn môi trường EG Environmental Guideline Hướng dẫn môi trường EIA Environmental Impact

AssessmentĐánh giá tác động môi trường

EMO Environmental ManagementOffice

Phòng quản lý môi trường

EMP Environmental ManagementPlan

Kế hoạch quản lý môi trường

EO Environmental Officer Nhân viên môi trường EPC Environmental Protection

CommitmentCam kết bảo vệ môi trường

ES Environmental Supervisor Người giám sát môi trường FS Feasibility Study Nghiên cứu khả thi GOV Government of Vietnam Chính phủ Việt Nam IBRD The International Bank for

Reconstruction andDevelopment

Ngân hàng tái thiết và phát triển

IDA International DevelopmentAssociation

Hội liên hiệp phát triển quốc tế

IEC Independent EnvironmentalConsultant

Nhà tư vấn môi trường độc lập

BIWASE Binh Duong Water Supply –Sewerage – Environment Co.,LTD

Công ty TNHH MTV cấp thoát nước – môi trường Bình Dương

MABUTIP Management Board ofTechnical InfrastructureDevelopment Project

Dự án mở rộng quản lý phát triển cơ sở hạ tầng kỹ thuật

MONRE Ministry of Natural Resourcesand Environment

Bộ Tài nguyên và Môi trường

NGO Non-GovernmentalOrganization

Tổ chức phi chính phủ

OP Operational Policy Chính sách vận hành PC Public Consultation Ý kiến cộng đồng PM Particulate MatterPMU Project Management Unit Đơn vị quản lý dự án PPC Provincial People’s Committee Ủy ban tỉnh PWSC Provincial Water Supply Công ty cấp nước cấp tỉnh


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CompanyROW Right of Way Biện pháp thích hợp RP Resettlement Plan Kế hoạch tái định cư TDS Total Dissolved Solids Tổng chất rắn hòa tan TPC Town People’s Committee Ủy ban thị trấn TSS Total Suspended Solids Tổng chất rắn lơ lửng VDIC Vietnam Development

Information CenterTrung tâm thông tin phát triển Việt Nam

VUWSDP I First Vietnam Urban WaterSupply Development Project

Dự án phát triển cấp nước đô thị Việt Nam đầu tiên

VUWSWP Vietnam Urban Water Supplyand Wastewater Project

Dự án phát triển cấp nước và nước thải đô thị Việt Nam

VUWSP Vietnam Urban Water Supplyand Wastewater Project

Dự án cấp nước và nước thải đô thị Việt Nam

WB The World Bank Ngân hàng thế giới WTP Water Treatment Plant Nhà máy xử lý nước thải


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SUMMARY OF CONTENTS OF ENVIRONMENT IMPACTASSESMENT REPORT

Water Supply System in My Phuoc Urban and Industrial Park subproject is acomponent of Vietnam Urban Water Supply Wastewater Project. The subprojectwill develop and improve water supply for My Phuoc urban area, including 02communes Chanh Phu Hoa, My Phuoc townlet in Ben Cat district. Water supplysubproject include installing equipments for Raw water pumping station, whichexploit raw water in Dong Nai river, and newly build Water Treatment Plant,capacity 30,000 m3/day, transmission system and distribution system to enlargecoverage area for more households and commercial units to get drinking water.The coverage area is expected to reach 90% in My Phuoc urban area after thecompletion of Water Supply System in My Phuoc Urban and Industrial ParkSubproject.

Water Supply System in My Phuoc Urban and Industrial Park Subproject isclassified as type B project by World Bank. This requires an EnvironmentAssessment and Environment Management Plan (EA/EMP) to be prepared forWater Supply System in My Phuoc Urban and Industrial Park, to meetrequirements of environmental protection by World Bank.

Consulting affected households, People’s Committee at commune, districtlevels, Fatherland Front Committee, where the subproject go through wasorganised at office of People’s Committees in Thoi Hoa, Ben Cat, Tan Hiep,Uyen Hung on 16 and 17 September 2010, to get their opinion and concern onthe subproject. In such meeting, contents of the subproject and environmentalprotection required for the subproject was presented to local people andparticipants. Matters given out in the meetings were almost related to publicsafety with operations of erosion, depression, hindering traffic, dust pollution,surface water etc. All participants agreed with contents of results of theenvironmental protection commitment in subproject. Participants confirmed thatno cultural property and other values affected by the subproject. Department ofNatural Resources and Environment in Binh Duong province and Tan UyenPeople’s Committee also confirmed that no wild animal in danger or rare animalin the project area. In the EA/EMP, potential impacts by the subproject aremostly temporary, impacts by construction activities do not affect much onliving environment, ecological source and cultural property. While positiveimpacts by the clear water supply increase more value than short term impactsby related construction activities. Usual impacts by construction phase are dust,noise, traffic hinder, removal from construction can be prevented or reduced byeliminate measure as proposed in the environment protection commitment.During operation phase of the subproject, it should have measure to ensure thatraw water pumping station can manage chemicals for treatment in accordance


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with standard of Vietnam, sludge from treatment process is managed underregulations of the Vietnam Environment Law. Wastewater and solid wastewatergenerated from components of the subproject are treated in standard andregulation of Vietnamese law before discharging.

EMP for this subproject include measures to eliminate impacts and requiremonitoring the environment quality for management and monitor unexpectedand expected impacts by the subproject. This EMP also defines responsibilitiestoorganise and develop capacity and request to train staff of PMU underBIWASE to be able to control the implementation of EMP. To implement EMPrequires assistance from Environment Consultant (EC), andIndependentEnvironment Consultant (IEC) to audit EMP. Cost for EMPimlementing cover cost for EC to assist kiwaco / PMU to carry out the EMP.


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1. INTRODUCING SUBPROJECT AREA AND ABOUT THESUBPROJECT

1.1 INTRODUCING SUBPROJECT AREAMy Phuoc Urban (MP) located in the center of Ben Cat district, away Thu

Dau Mot town about 18 km in north. It began construction in 2002 under thedirection of a combination of industrial activities and development of residentialand commercial to ensure long term and sustainable. The entire of Phuoc MyUrban (except MP4) occupying an area of about 5,100 hectares.

The total area of MP3 is 2,242 hectares, in which 1,027 ha for urbandevelopment (45% of total area), 998 ha for industrial parks and 217 hectares forother purposes. By January 7 / 2009 population of MP3 is about 31,000 people;the detailed planning residential of MP3, population of this area will reach90,000 by 2015 and 122,000 people in 2020. Urban MP3 will be the place tolive and work of the people, the resettlement households, immigrant workersand specialists of MP3, workers in MP1, MP2 and the surrounding area.

The water system of MP3 is under the demand for water increasingrapidly. It is a pressing need for continuous growth and social economicdevelopment of MP3 and surrounding areas.

With the purpose to supply enough water for people in urban and socialeconomic development the water supply systems of MP3 need to be newconstruction and upgrades

1.2 INTRODUCING THE SUBPROJECT

In 2007, Government of Vietnam (The Government) and World Bank(WB) agreed a preparation for the Vietnam Urban Water Supply andWastewater Project(VUWSWP).

Objective of the VUWSWP aimed at improving clear water supply sourcefor urban areas in Vietnam. My Phuoc Urban and Industrial Park belongs toBinh Duong province, which represents for one of the five subprojects atprovincial level of the VUWSWP. Other subprojects are chosen for Kien Giang,Dak Lak, Quang Nam and Quang Ninh.

General objective of the My Phuoc project is to provide clean water for

households and economic activities, social ...of the MP3 urban area in stage of

development until 2020. Thereby it contributes to improving the living

conditions of people, creating prerequisites for the establishment of industrial

development, investment attraction as well as long term, contributing to push

economic development of Binh Duong Province.


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The scope of the project is to serve MP3 urban area (1,027 hectares),including residential area (house, apartment and housing group), producinghandicrafts, offices, commercial establishments and services.

Proposed service area of the subproject does not include MP3 industrialpark (998ha), because this industrial park will be partly supplied with waterfrom existing underground system of MP3-1, MP3-2 station and partly from TanHiep Water Plant – phase 2, capacity 30,000m3/day (to be final inspected andhanded over in end 2010.

To ensure subprojects priority supply water for MP3, BIWASE mustcommit to ensure the water supply rate of household must be at least 90% aftercompleted sub-projects. When MP3 unused full capacity it will open valveconnected to support urban residential MP1, MP2.


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2. POLICY AND LEGAL FRAMWORK OF EIA

2.1 Regulations, legal basis of Vietnam and technical background that theproject must comply with

Environmental Protection Law of Vietnam No. 52/2005/QH11 ratified byNational Assembly of Socialist Republic of Vietnam on 29/11/2005, validfrom 01/07/2006.

Water Resource Law No. 08/1998/QH10 ratified on 20/05/1998 byNational Assembly of Socialist Republic of Vietnam, section X, Thirdmeeting.

Construction Law No. 16/2003/QH11 ratified on 26/11/2003 by NationalAssembly of Socialist Republic of Vietnam.

Land Law No. 13/2003/QH11 ratified on 26/11/2003 by NationalAssembly of Socialist Republic of Vietnam.

Fire Prevention and Fighting law No. 27/2001/QH10 ratified on29/06/2001 by National Assembly of Socialist Republic of Vietnam.

Labour Law dated 23/06/1994 of the Socialist Republic of VietnamDecree No. 80/2006/NĐ-CP dated 09/08/2006 of the Government on “Detail regulations and instruction to implement articles of theEnvironment Protection Law”.

Decree No. 117/2009/NĐ-CP dated 31/12/2009 of the Government on “To fine administrative violence in environmental protection”

Decree No.21/2008/NĐ-CP dated 28/02/2008 of the Government on changing, supplementing some articles of Decree No. 80/2006/NĐ-CP of the Government on detail regulations and instruction to implement somearticles of Environment Protection Law.

Circular No. 05/2008/TT-BTNMT of Ministry of Natural Resources andEnvironment issued on 8/12/2008 promulgating environmentalassessment, strategy and environmental impact assessment andcommitment to protect the environment.

Decree No. 04/2007/NĐ-CP dated 08/01/2007 of the Government on changing supplementing some articles to Decree No. 67/2003/NĐ-CP dated 13/06/2003 of the Government on “Environmental Fee charged towastewater”

Decree No. 149/2004/NĐ-CP dated 27/07/2004 of the Government on “Regulations to give license for investigating, exploiting and using waterresource and discharging waste water into receiving water sources”


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Decree No. 59/2007/NĐ-CP dated 09/04/2007 of the Government on solid waste management.

Decree No. 88/2007/NĐ-CP dated 28/05/2007 of the Government on drainage in urban and industrial park

Decree No. 35/2003/Nđ-CP dated 4/4/2003 of the Government on detail regulation to implement some articles of Fire Prevention & Fighting Law

Circular No. 12/2006/TT-BTNMT dated 26/12/2006 of Ministry ofNatural Resources & Environment promulgating “Conditions to dobusiness and procedure to set up file, registration, granting license, solidwaste management code”

Circular No. 39/2008/TT-BTC dated 19/05/2008 of Ministry of Financeinstructing implementation of Decree No. 174/2007/NĐ-CP dated 29/11/2007 of the Government on environmental protection fee chargedto solid waste.

Circular No. 02/2005/TT-BTNMT dated 24/06/2005 of Ministry ofNatural Resources & Environment instructing implementation grantinglicense to investigate, exploit and to use water resources and to dischargewastewater into water sources.

Circular No. 04/2004/TT-BCA dated 31/03/2004 of Ministry of Policeinstructing implementation of Decree No. 35/2003/NĐ-CP dated 4/4/2003 of the Government promulgating details to implement articles of the FirePrevention & Fighting Law.

Circular No. 37/2005/TT-BLĐTBXH dated 29/12/2005 of Ministry of Labor, Social Disable instructing training on work safety and worksanitary.

Decision No. 23/2006/QĐ-BTNMT dated 26/12/2006 of Ministry of Natural Resources & Environment giving “List of hazardous waste”

Decision No. 3733/2002/QĐ-BYT dated 10/10/2002 of Ministry of Health promulgating “21 standards on labor sanitation, 05 principles and07 parameters of labor sanitation”

Decision No. 22/2006/QĐ-BTNMT issued by Ministry of Natural Resources and Environment dated 18/12/2006 forcing to comply withenvironmental standards.

National Technical Standards on planning construction No. 04/2008/QĐ-BXD dated 3/4/2008 of Minister of Construction.

Decision No. 04/2008/QĐ-TNMT dated 18/07/2008 promulgating national technical standard on environment.


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Decision No. 16/2008/QĐ-BTNMT dated 31/12/2008 of Ministry of Natural Resources & Environment issuing national technical standard onenvironment.

Decision No. 68/QĐ-UBND dated 12/12/2008 of Binh Duong Provincial People’s Committee on protecting the environment in Binh Duongprovince

Decision No. 1929/QĐ-TTg dated 20/11/2009 of Prime Minister approving Development Orientation for water supply system in urban andindustrial park in Vietnam in 2025 and oriented to 2050.

General Planning of water supply system in Binh Duong province, phase2005-2010 and oriented to 2020 approved by Binh Duong ProvincialPeople’s Committee in the decision No. 78/2005/QĐ-UB dated 24/05/2005.

General Planning of My Phuoc Urban area in Binh Duong province

2.2 Requirements of World BankAll requirements of EIA issued by World Bank are presented in operation policy(OP) and banking procedures (BP) of World Bank. Requirement for EIA isdescribed by OP / BP 3.01. Depending on different OP/BP, safety policy can beactivated. Policies are based on the VUWSWP listed in below table 2.1

Table 2. 1: Safety Policy of World Bank

Safety policy based on VUWSWP Yes No

Environment Assessment (OP/BP3.01) X

Natural Environment (OP/BP 3.04) X

Harmful disease management (OP 3.09) X

Cultural Property (OPN 11.03, OP 3.11) X

Resettlement & Removal (OD 3.30)** X

Native inhabitant (OD 4.10) X

Forest (OP/BP 3.36) X

Dam Safety (OP/BP 3.37) X

Dispute [OP/BP/GP 8.60)* X


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Safety policy based on VUWSWP Yes No

International river way project (OP/BP 8.50) X

Table 1. 2:vbhnb,mnm,n.,,.m.m./,./jkv

* Updated from appraising documents of VUWSDP 1** Resettlement Plan was prepared by another report


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3. DEBSRIPTION OF PROJECT

3.1 Project name:

VIETNAM URBAN WATER SUPPLY WASTEWATER PROJECTWATER SUPPLY SYSTEM IN MY PHUOC INDUSTRY AND URBAN

(CAPACITY: 30,000M3/DAY)

The project consists of:

Raw water pumping station; Raw water transmission main; Water treatment plant; Treated water transmission main from the plant to booster station; Booster station.

3.2 Project Employer

Name: Binh Duong Water Supply Sewerage Environment Co., Ltd

Address: 11- Ngo Van Tri street, Phu Loi ward, Thu Dau Mot town, Binh Duongprovince

Tel: 0650.3827789 Fax: 0650.3827738

Business registration of the company: No. 3700145694, seventh adjustment onJanuary 22, 2010 issued by Binh Duong Department of Planning and Investment.

Represented by: NGUYEN VAN THIEN Position: General Director

Nationality : Viet Nam

3.3 Position for components of the project

All components of Water Supply System in My Phuoc Industry andUrban are located in Tan Uyen district (raw water pumping station, raw watertransmission main, water treatment plant), Thu Dau Mot town (transmissionmain from water treatment plant to booster station), Ben Cat district (boosterstation) in Binh Duong province. Position of project components is presented inthe Binh Duong map as follows:


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3.3.1 Position of raw water pumping station and raw water transmissionmain

+ Raw water intake work and raw water pumping station are placed in UyenHung townlet, Tan Uyen district, Binh Duong province. Position of the pumpingstation as follows:

In west: 300m far from DT 747 road In East: Dong Nai river In North: agricultural land In South: household who exploiting sand

+ Raw water transmission main in this project has diameter of D=1,000mm, beinginstalled along DT 746 and DT 747 road and closed to existing raw water pipeline

Firgure3.1: General layout of Water Supply System in My Phuoc Industry and Urban


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DN=800mm, which across Uyen Hung commune, Khanh Binh commune, Tan Hiepcommune, Tan Uyen district, Binh Duong province.

Figure 1.1: Layout of raw water pumping station and raw water transmission

3.3.2 Position for water treatment plant

The water treatment plant in this project will be built in reserved land for futureexpansion of Tan Hiep water treatment plant, which border to South East connerof Binh Duong Urban Industry Service Complex (outside the industrial park),located in Tan Hiep commune, Tan Uyen district, Binh Duong province.

3.3.4 Position for transmission main from Tan Hiep W.T.P to boosterstation and Booster station

Transmission main from Tan Hiep W.T.P to booster station

Transmission main from Tan Hiep W.T.P to booster station has diameterof D=1,000mm, going through Binh Duong Urban Industry Service Complex,Kim Huy industrial park, VSIP industrial park, Phu Gia industrial park, Đong An 2 industrial park with total length of 10,800m.

Booster station

My Phuoc booster station is placed within My Phuoc 3.2 water treatment plant,on XE1 road in My Phuoc 3 industrial park, Ben Cat district, Binh Duongprovince. Total area of the station is 25,128 m2


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4. SELECTING IMPLEMENTING METHOD FOR THE SUBPROJECT

4.1 Selecting water source

The underground water source in the project area is being deteriorated in bothvolume and quality due to careless exploitation previously. Thus, it shouldrestrict further exploiting and have protective method or strict management tokeep this source as reservation for the area. It should firstly study and investigatethe volume in an accurate manner to have believable basis for planning theexploitation when needed.

Surface water source which can be used as raw water source to treat in thisproject is taken from Đong Nai river. According to updated data on this river and through real construction and development in upstream of this river (atposition closed to the project’s position), it has shown that taking raw waterfrom Đong Nai river will have some advantages as follows:

- Some currently construction works of water supply system in Binh Duongsuch as: South Thu Dau Mot water supply project funded by ADB, TanHiep water treatment plant financed by ODA loan of the Netherland. Allthese two projects selected surface water in Đong Nain river to treat.

- On the other hand, if surface water in Đong Nai river is chosen to provide raw water to treat in this project, there would be some advantages such as:good surface conditions, can utilise the same raw water intake work, rawwater pumping station of Tan Hiep plant, just need to install more pumpsand equipments.

From above evaluation, surface water in Đong Nai river is selected for treatment serving the My Phuoc urban area, Binh Duong province for development phaseoriented to 2020.

4. 2 Selecting construction site for components of the subproject andtechnology for the treatment plant

4.2.1 Intake work – raw water pumping station and raw water transmissionmain

(1) Raw water pumping stationTo take water from Đong Nai river serving for the subproject and to build

intake gate-raw water pumping station on the river side, within distance fromUyen Hung townlet to Tan Ba is considered the most suitable. Building intakework – raw water pumping station on this river distance combine with selectingposition for raw water transmission main from the intake work leading totreatment plant, located in reserved land for the subproject.


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Alternatives :

Through actual investigation, there are 03 relative good and feasible alternativesfor consideration to build the intake work – raw water pumping station asfollows:

a. Alternative 1 :

Intake work, raw water pumping station is placed in hamlet 3A, Khanh Binhcommune, Tan Uyen district (near Binh Chanh chapel). From there,transmission main will go through the field to road ĐT 747 in straight angle with this road (at T-junction ĐT 747 and road leading to Binh Duong brick plant), acrossing the field, field, form products and residential area in hamlet 3B, KhanhBinh commune (Ba chapel) leading to ĐT 746 (near Khanh Binh People’s Committee). From there, transmission main continues in paralell with road ĐT 746 (on right way going to the plant), going to Ben San bridge, acrossing fieldand coming to treatment plant.

This alternative shows that:

- At raw water pumping station :

o Relative flat terrain, large;

o Mostly fruit tree garden.

o Need to move 02 class 4 houses of people living there.

- Along raw water transmission main:

o Total length: 7,500m.

o Across field and hill with no traffic system, about 3,000m.

o Need to move some class 4 houses in hamlet 3B and at beginning T-junction leading to Binh Duong brick plant on ĐT 747.

b. Alternative 2 :

Position for intake work, raw water pumping station is at Tan Hiep raw waterplant, which is about 200m far from the intake work and raw water pumpingstation in upstream and about 19km far from MP3 in south east. From there, rawwater line acrosses alsphated road invested by the project owner leading to ĐT 747, then it goes through bare land (vehicles can go) in almost straigth directionto road ĐT 746, about 1,000m from Khanh Binh People’s Committee in north east. Then the pipeline will go in paralell with road ĐT 746 leading to treatment plant, which is relative similar to alternative 1.

Intake work has been invested for capacity of 120.000m3/day, therefore it does

not need new intake work for MP3.


Page | 21

If following this alternative:

o Intake work has been invested for capacity of 120.000m3/day, therefore itdoes not need new intake work for MP3.

o In raw water pumping station:

o Terrain if flat, large and higher than surrounding

o Quality and flow of raw water at this gate is stable, no salinity, usingevaluation data of Tan Hiep W.T.P.

o Land has been already compensated in Tan Hiep project.


o Total length: about 7,800m.

o Considering terrain of the main, easy implementing method, low pressureloss.

o Acrossing bare land (field, hill…) about 2,300m, in which 1,200m ofwalking road that vehicles can transport

o No house or construction work on this route.

c. Alternative 3 :

Intake work, raw water pumping station is placed in downstream of intendedposition for pumping station and intake gate as mentioned in alternation 1 andabout 1,800m from there. Raw water transmission main will go through the fieldand residential area along road ĐT 747 (at T-junction ĐT 747 and red soil road leading to Phu Binh brick plant), along the red soid road going to Ben San, thengoing through the field to road ĐT 746 at the position after Ben San bridge (as in alternative 1 & 2) and coming to treatment plant as in alternative 1 and 2.

If following this alternative :

- At raw water pumping station:

o There are field, living land and garden

o Need to move 02 house of class 4.


o Total length: about 7,400m.

o At distance going through the field, there is no traffic road and vehiclescan not travel, its length about 2,500m.

o It will affect some houses along road ĐT 747 and red soil road

Selecting alternative :


Page | 22

Considering the mentioned above alternatives, it shows that the alternative 2 hasmany advantages and the most feasible as follows (particularly in groundclearance)

- It only needs to invest more equipments (pump, electric system etc..) but canuse the same covering structure of intake work-raw water pumping station ofTan Hiep plant. The surface is available that land acquisition is not necessaryto carry out and reduce time and cost for land clearance, as well as preventrisk (due to not able to clear the land), any hinder (long negotiation time),which affect the subproject implementing process (time, coast, etc.)

- Terrain for raw water pumping station and raw water transmission main isrelative flat that can save cost and time for ground clearance

- On raw water transmission main, most of vehicles can easily travel which isadvantageous for construction and reduce cost and time for initial cost tobuild the road.

- Can combine to supply raw water for future Khan Bin water plant

- From such explanation, it recommends to select construction site for rawwater pumping station and intake work as in alternative 2.

Figure4.1: Intake work of Tan Hiep W.T.PFigure 4.2: raw water pumping station of Tan

Hiep W.T.P

Raw water transmission main

In 2020, estimated demand for clean water of the people living in My Phuoc 3 urbanarea is 30,000 m3/day. However, to fully meet the demand on clean water fordevelopment of My Phuoc 3 urban area, it requires 60,000 m3/day to 80,000 m3/day ofcapacity. Considering available construction surface, actual water demand and lifecycle of the water supply work, it recommends to invest a DN 1,000 raw watertransmission main in this project. Raw water transmission main will be placed intechnical corridor on road ĐT 746, distance in Tan Hiep commune, Khanh Binh commune and Uyen Hung townlet. The road owner of DT 746 is Becamex under

Raw water intake gate Awaiting pipe in raw water PS


Page | 23

BOT contract as in decision No. 1353/QĐ-UBND dated 13/05/2010). Becamex and Biwase agreed in writing on position for water pipe. During construction phase of theroad, Becamex compensated and made resettlement, thus it does not need landacquisition.

Figure 4.3: Raw water transmission main on ĐT 746 road

4.2.2 Water treatment plant

Position for water treatment plant

Because of the importance and urgency to build a water treatment plantserving for demand on clear water in My Phuoc urban area, the water treatmentplant will be built in reservation land of Tan Hiep W.T.P. Planned capacity ofTan Hiep is 120,000m3/day, but it is operating at 30,000 m3/day in present time.The area of Tan Hiep is about 80,000 m2, which was planned enough land forall treatment facilities having capacity of 200,000m3/day. Thus, the surface isavailable for construction and does not need land acquisition.

Figure 4.4: Area of water treatment plant

Pipe position on road ĐT746

Reservation land for treatment


Page | 24

Selecting treatment technology

Testing result of water taken in Dong Nai river serving for the subprojectgive out quality as follows:

Table 4.1: Sample result of water in Dong Nai river

No Norm Unit Dryseason

Rainyseason

VN Standard01:2009/BYT

1 pH 6.59 6.57 6.5-8.52 TDS mg/l 19 27 10003 Turbidity NTU 37.2 67 2.04 Color Pt-Co 10.73 82 155 Acid mg/l

CaCO3

6 16 -

6 Alkali mg/lCaCO3

18 18 -

7 Hardness Ca mg/lCaCO3

3.2 4 300

8 Clorua mg/l 8 10 2509 NO2

- -N mg/l 0.085 0.12 3.010 NO3

- -N mg/l 0.32 0.74 5011 NH4

+ -N mg/l kph 0.14 3.012 PO4

3- mg/l 0.06 0.09 -13 SO4

2- mg/l 2.07 7.73 25014 FeTC mg/l 1.97 1.98 0.315 Al mg/l 0.028 0.034 0.216 Cu mg/l 0.03 0.02 1.017 Zn mg/l 0.04 0.05 3.018 Mn mg/l 0.024 0.057 0.319 Oxydise mg/l 0.68 2.7 -20 DO mg/l 6.67 6.17 -21 COD mg/l 22 20 -22 BOD(20 ¨C) mg/l 0.06 0.3 -

According to Vietnam standard 01:2009/BYT : National Technical Standard onDrinking water quality issued by Ministry of Health, to supply water for allobjects in the region, this water source need treatment. Basing on capacity ofconstruction site and natural conditions of the region, operation management


Page | 25

and actual experience, the treatment technology can be built following the underoptions :

Option 1 :

Option 2 :

Resevoir Filtration tankReaction tank with

suspended floculation

Clear water P.SDistribution

network

Clo

Lime Alum

Intake work

Raw water PS

Verticalmixing tank

Clo

Raw water pipe

Don

gN

airi

ver

Lime Alum

Intake work

Raw water PS

Verticalmixing tank

Filtration tank Horizontalsedimentation

Reaction tank withsuspended floculation

Resevoir Clear water P.S Distributionnetwork

Clo

Clo

Raw water pipe

Don

gN

airi

ver


Page | 26

Option 3 :

In water treatment plant, it just gives out comparison of raw watertreatment technology (treatment group0 to select the optimal option. Othersupportive items such as clear water pumping station, chemical house, resevoiretc.. in all options are similar that no comparsion made for this part.

According to the introduced above technology lines, three optionsproposed for treatment plant as follows:

a. Option 1 :

Treatment items included in this technology as: vertical mixing tank,reaction tank with suspended flocculation, horizontal sedimentation tank, rapidfiltration tank.

Reaction tank with suspended flocculation is built in connection withhorizontal sedimentation tank. Calculation result (see note for basic design)shows that: with capacity 30,000m3/day, size of unit treatment items as follows:

- Rapid filtration tank: LxBxH = 25,5mx11,5mx5,7m.

Resevoir Filtration tankAccerlator

Sedimentationtank

Clear water P.S Distributionnetwork

Clo

Lime Alum

Intake work

Raw water P.S

Verticalmixing tank

Clo

Raw water pipe

Don

gN

airi

ver


Page | 27

- Reaction tank with suspended flocculation in connection with horizontalsedimentation tank: Xbox = 45, 9mx13, 8mx5, 7m.

b. Option 2 :

Treatment items included in this technology as: vertical mixing tank,sedimentation tank with suspended flocculator, rapid filtration tank. When usingthis technology, it does not need to build reaction tank due to the reactionprocess taken in suspended floculator in sedimentation tank. Calculation result(see note for basic design) shows that size of unit treatment items as follows:

- Sedimentation tank with suspended floculator: LxBxH = 17mx36mx5m

- Rapid filtration tank: LxBxH = 25,5mx11,5mx5,7m

c. Option 3 :

Treatment items included in this technology as: vertical mixing tank,accelator sedimentation tank with suspended flocculator, rapid filtration tank.When using this technology, it does not need to build reaction tank due to thereaction process taken in suspended floculator in sedimentation tank.Calculation result (see note for basic design) shows that size of unit treatmentitems as follows:

- Accelator sedimentation tank : working size of tank D = 25m, H = 5,0m

- Rapid filtration tank: LxBxH = 25,5mx11,5mx5,7m

d. Analysing to select option:

here, it is just different in reaction tank and sedimentation tank, theselecting construction option will base on analysis and comparison theseitems between two options:

d1. Advantage and disadvantage of option 1

Advantages :

- Stable and safety working

- High treatment efficiency, less affected by change in raw water source(flow, quality) as well as impacts by surrounding natural conditions

- High ability to run overloaded.

- Easy operational management .

- Have experiences from some other similar works in the region.

- Similarly being used in Tan Hiep water plant, that high synchronous andeffective for operation and management

Disadvantages :


Page | 28

- About 4% more construction area required.

- Bigger construction size and more investment cost.

d.2. Advantage and disadvantage of option 2

Advantages:

- Higher operating efficiency so that smaller construction size

- Less investment work, save cost (about 4% of sedimentation tank

- Less land required

- Reaction process is combined in suspended floculation that savechemicals for treatment.

Disadvantages :

- Treatment effectiveness is affected by raw water quality or flow of rawwater is suddenly changed ( >10%)

- If horizontal sedimentation tank stop operation or any change in quality,flow of input raw water, it needs about 1-2 hours (since the tank operatesagain or any change) to resettle operation of the tank and reach therequirements. This is ineffective period of the tank, quality of water aftersedimented not ensured, bad impacts to operation of other treatmentfacilities.

- Because working scheme of the sedimentation tank must be relativestable, more or less affected by change in surrounding naturalenvironment, specially change in temperature. On the other hand, it alsorequires strict operational management with higher requirements.

d3. Advantage and disadvantage of option 3

Advantages:

- Average treatment efficiency

- Smaller size, less land required for construction and lower investment costcompared with option 1.

- Not yet have experience in management and operation.

Disadvantages :

- Treatment efficiency depends on equipments, purchasing equipments isalso complicated

- Due to many corridors and partitions with narrow size (0,8m x 1,0m) andbig depth (5,0m), it is difficult in construction phase


Page | 29

- Require high experience and proffesionals to operate and to manage.

- Limited and complicated for sludge disposal

- Not good overloading working

d4.- Selecting the option :

from analysing advantages and disadvantages of three options, we have acomparison as follows:

Table 4.2: Comparing advantages and disadvantages of 3 options

No Compared elements Option 1 Option 2 Option 3

1 Treatment efficiency High High Average

2 Stable working scheme High Average Average

3 Ability to run overloaded Good Average Average

4 Operational management Simple Complicate Complicate

5 Construction area Big Average Average

6 Initial construction cost High Average Average

7 Operational cost(chemical)

Average Low Average

8 Maintenance and repaircost

Low Average Average

9 Experience to operate andmanage of the employer

Much Less No

By comparing it shows that option 1 has more advantages than option 2 andoption 3, simpler and safer for operational management, stable working, highefficiency, less affected by change in surrounding natural environment, beside itis synchronous with existing work that is easy to operate and gain highereffectiveness. Therefore, option I is proposed to invest for this subproject.

4.2.3 Transmission and distribution network

Main transmission pipeline go through Binh Duong Urban IndustryService Complex, distribution network locate in My Phuoc 3 urban area, atpresent, technical infrastructure in the area has been completed that it does notneed land acquisition.


Page | 30

4.2.4 Booster station

It lies in area of my Phuoc 3-2 water plant with available surface that it doesnot need land acquisition.

4.3 Construction investment items of water supply system in My Phuoc urbanarea

(1) raw water pumping station

Use the same covering house of tan Hiep raw water pumping station

- Install more equipments :

o 03 centrifugal pumps (02 working, 01 standby) with technicalspecification Q=750m³/h, H=65m

o Install clock valve and fittings

- Electric system :

o Install 01 transformer, 03 phase, capacity 1,000 KVA

o Install 01 diesel generator 03 phase, capacity 1,000 KVA,started by baterry 24 Vdc.

o Install ATS panel

(2) raw water transmission main

Install 9,000m of ductile iron pipe D1,000.

(3) Treatment plant

a. Vertical mixing tank:

- Quantity: 01 tank (building for total capacity up to 60,000 m3/day)

- Construction dimension: 01 round shape tank

- Diameter: D=6m

- Cylinder part: H = 1m

- Cone part: small bottom: d = 1.4m, big bottom D=6m

- Ferro- concrete structure made on site

b. Treatment group :

Building treatment group for capacity of 30,000m³/day, with dimension as :

Reaction tank with suspended floculator :

- Quantity: 03 cells

- Size of each cell: LxBxH = 7.4mx7.4mx5.8m


Page | 31

- Ferro- concrete structure

Horizontal sedimentation tank:


- Size of each cell: LxBxH = 36mx7.4mx5.8m

- Ferro- concrete structureRapid filtration tank


- Size of each cell: LxBxH = 11.5mx 5mx5.37m

- Ferro- concrete structure

c. Clear water tank :

- Quantity: 01 tank having dimension as follow

- Build half on the ground and half under ground with ferro-concretestructure

- Size of the surface: LxB = 48.4m 48.4m

- Height of underground part: 2.0m

- Height of on the ground part: 3.0 m

d. Chemical house :

Chemical used for treatment are lime, alum and clo with quanity as follows:

- Lime : 15 g/m³ = 0,015kg/m³

- Alum : 35g/m³ = 0,035 kg/m³

- Clo : 5 g/m³ = 0,005 kg/m³

o construct 02 slakelime cells, size of each cell axbxh = 2.2m x 2.2m x 1m

o construct 02 consumed lime cells, size of each cell axbxh = 2.3m x 2.3m x1.75m

o construct 02 alum mixing and consumed cells, useful volume of each cellis 10,5m3

o install lime, alum and chlorine dosing equipments

o the cover house is built for lime, alum and chlorine, having size 10m x25m and divided into different specific rooms.

e. Clear water pumping station


Page | 32

- Build half on the ground and half under ground

- Install equipments: 01 variable speed pump system including 03pumps (02 working, 01 standby), technical specification of each pump:Q = 750m3/h, H = 40m.

f. Electric system :

- Install 01 transformer, 03 phase, capacity 1,250 KVA

- Install 01 diesel generator 03 phase, capacity 1,250 KVA, started bybaterry 24 Vdc.

- Install lighting system within the plant area.

(4) Transmission distribution pipelines

To supply water for customers, the subproject will install about 66,800 mpipe of different diameters as follows:

- DI pipe D1000 : 3,000 m

- DI pipe D800 : 7,800 m

- DI pipe D600 : 4,000 m

- DI pipe D400 : 3,000 m

- uPVC D200 : 5,000 m

- uPVC D150 : 4,000 m

- HDPE D100 : 5,000 m

- HDPE D50-D90 : 35,000 m

- Meters and household connection pipe D20 : 13,500 sets

(5) Booster station

- Use resevoir of My Phuoc 3-2 water plant

- Booster station 30,000 m³/day: reuse covering structure of clear waterpumping station of MP3-2, install 01 frequency converter systemincluding 03 pumps, each pump has technical specification:Q=500m³/h, H=30m.

- Electric system :

o Install 01 transformer, 03 phase, capacity 250 KVA

o Install 01 diesel generator 03 phase, capacity 250 KVA, startedby baterry 24 Vdc.

o Install lighting system within the plant area.


Page | 33

5. FOUNDATION ENVIRONMENT OF THE SUBPROJECT

5.1 NATURAL, ECONOMIC AND SOCIAL CONDITIONS OF THESUBPROJECT

5.1.1 NATURAL CONDITIONS

a. Location:

My Phuoc 3 urban and industrial park is a part of My Phuoc urban andIndustry Area in Ben Cat district, Binh Duong province. MP3 is about 2km inSouth East from My Phuoc townlet, 16km from Thu Dau Mot provincial townand 45km from Ho Chi Minh city in North.

My Phuoc 3 urban and industrial park belongs to Thoi Hoa commune andChanh Phu Hoa commune, Ben Cat district. In MP3, there is national rout No.13crossing (or Binh Duong boulevard). Boundary road No.4 also go through thecenter of MP3 in west-east direction.

Boundaries of My Phuoc 3 as follows:

- In North West : MP1area

- In North : MP2 area

- In South East : Binh Duong new city

- In East : Hoa Loi commune

- In south west : MP4 area

Thoi Hoa commune

It is a suburd commune of Thu Dau Mot town, Binh Duong province.People here mostly earn income by selling services and handicraft. Rate ofpeople living by working, agriculture production is very low. Based on statisticdata in 2008, population here including temporary immigrants in Thoi Hoacommune is about 33,000 inhabitants. Its geographical location is as follows:

- In North: road 7B – My Phuoc 2

- In South: Palanxi road

- In East: DT 741 road

- In West: National route No.13

Chanh Phu Hoa commune

Population of Chanh Phu Hoa commune estimated in end of 2008 wasabout over 15,000 inhabitants, with its geographical location as follows:


Page | 34

- In North: residential area

- In South: existing residential area

- In East: My Phuoc 3 Industrial Park

- In West: National Route No. 13

b. Climate

Area of the subproject belongs to tropical moonson region with twodistinct seasons: rainy season starts from May to November and dry season fromDecember to April of the following year.

+ Air temperature:

- Annual average temperature : 250C

- highest temperature month in year is April : 28.80C

- lowest temperature month in year is January : 210C

+ Moisture

- Annual average moisture : 76,6%

- absolute minimum moisture : 65,2%

- absolute maximum moisture : 83%

+ Rain:

Rainy season starts from May to November, in those months, more than20 rainy days in a month. Most rain is in August, September and October(occupies 90% of annual rainfall). In dry season, there is almost no rain(January)

- Annual average rainfall : 2.177 mm

- Maximum rainfall : 2.638 mm

- Minimum rainfall : 1.961 mm

+ Evaporation

- Annual average evaporation : 1.350,5 mm

- daily average evaporation : 3,7 mm

- maximum daily evaporation : 13,8 mm

+ Wind

- two main wind direction: South west: from May to November; East-South East: from January to April


Page | 35

- average windspeed at second and third class. Binh Duong province isalmostly not affected by storm.

5.1.2 ECONOMIC AND SOCIAL STATUS IN THE SUBPROJECT AREA

(1) Demographic features in wards, communes

According to statistic data of communes/wards in end of 2009, there were7,532 households with 19,809 inhabitants in total, at scale of 2.7 person/house,2,837 households with 11,511 person in total, at scale of 4 person/house.

(2) Economic and environment sanitary in communes/wards

a. Jobs and income source

With the development of the country, economic growth rate in BinhDuong has been very fast in recent years (over 10% of annual growth), greatlycontributed for industry development in the province. At present, Binh Duongplanned 25 industrial parks, of which 15 industrial park put into operation.These industrial parks solve job problems for lcal people and attracted manylabors from other provinces, thus many types of services established based onthat symptom.

Economic structure of Binh Duong strongly increased in industry,services, agricultural production occupied very small rate in economic structure.If in end of 2005, structure of Industry-Service-Agriculture in the province was63,8 % - 28,2 % - 8 % , this rate in 2008 was 64,8% - 29,5% - 5,7%respectively.

In strudying area for the project, economic structures of wards/communesare presented in below table:

Table 5.1. Economic structure in wards/communes in the project area

Economic structure (%) Thoi Hoa Chanh Phu Hoa

Industry 64,5 45

Commerce - Services 29,7 24,25

Agriculture 5,8 30,75


Page | 36

Chart 5.1. Economic structure in wards/communes in project area

0

10

20

30

40

50

60

70

Thới

Hòa

Chánh

Phú

Hòa

Công nghiệp

Thương mại - Dịch vụ

Nông nghiệp

From above data, it showed that economic structure in wards/communesin project area had high industry rate, then commerce and service, andagriculture the lowest rate. Particularly in Thoi Hoa, agriculture rate was verylow, which showed that people mostly live by selling service and working infactories in the industrial park. On the contrary, in Chanh Phu Hoa, Ben Catdistrict, which is closed to Thu Dau Mot town, most of people live byagriculture activities that agriculture rate in Chanh Phu Hoa occupied the highestrate at 30.75%.

According to evaluation by officials in wards/communes, in recent years,average income per capita in wards/communes increased at rather high rate.

Table 5.2. Average income per capita/year in wards/communes in project area

Unit: 1,000 đ

Year Thoi Hoa Chanh Phu Hoa

2007 7500 7800

2008 9600 9200

2009 12200 16000

(Source: Avaliable data – Economic-Social Investigation Program)


Page | 37

b. Living standard

In general, income and living standard of people in the project area israther high. If basing on new standard by Ministry of Labour Disable SocialAffairs (MOLISA): poor family is the family only has incomer under 260,000dong/person/month, poor rate in the project area is not much. However, due toliving in high economic development region, living cost is also high that there isa separate criteria to evaluate the rich/the poor. According to this criteria, anyfamily has average income per capita under 500,000đ/month is classified the poor. According to the criteria proposed by the local, the poor rate in communeswas defined as: 17 households in Thoi Hoa, occupied 3.26%, 35 households inChanh Phu Hoa, occupied 6.73%.

On the other hand, this economic-social investigation program was carriedout on some fixed form, about 5% over total households in the region, thus thisreport give out statistic data from the investigation program under two differentvision, based on criteria of poor level proposed by local community. Firstly, it isa self-evaluation on poor level of households, secondly it is evaluation byinvestigator based on established criteria combined with actual observation theinvestigation process.

Table 5.3: Poor/rich level based on households’ evaluation and investigators’ evaluationin model form

Evaluated by the community Evaluated by investigator

TTWards/commune

s PoorAvera

geFair Rich

Unknown

PoorAverage

FairRich

1 ThoiHoa

17 72 144 90 11 15 95 144 90

2 ChanhPhu Hoa

35 32 54 55 10 35 32 54 55

3 Total 52 104 198 145 21 50 127 198 145

(Source: Questionaires of Social Investigation Report of the project –2010) .

c.Water use situation

notwithstanding some population area on the main pipeline, closed todistribution pipeline of Tan Hiep water plant connected to clear water supplysystem, remaining areas in the project area, people must use different watersources as opened well, drilled well, rainwater, water in pond/river. Dependingon water demand, households can combined using 1 or 2 water supply sources,


Page | 38

but most of people use 1 water supply source, number of families use two watersupply sources stand for the second. Number of families use three water supplysoucres is not much.

In avaialbe water supply sources, beside tap water, water from drilled wellis the most popular. This source is used in most of daily demand such as eating,drinking, bathing, washing and using for doing business and services.

In 520 investigated families, there are 52 families used tap water, 429families used drilled well, 34 families use opened well, 5 families use water inpond/river.

However, the families can combine using different water supply sources.

Table 5.4. Use purpose of water source classified by regions

Use purpose

Eat/Drink Bath/WashingWater sources

Number Rate (%) Number Rate (%)

Opened well

Thoi Hoa 10 29.4% 30 36,5%

Chanh Phu Hoa 24 70.6% 52 63.5%

Total 34 100.0% 82 100.0%

Drilled well

Thoi Hoa 198 46.1% 198 46.1%

Chanh Phu Hoa 231 53.9% 231 53.9%

Total 429 100.0% 429 100.0%

River/pond

Thoi Hoa 0 0 2 40.0%

Chanh Phu Hoa 0 0 3 60.0%

Total 0 0% 5 100%

Tap water

Thoi Hoa 32 61.5% 25 59.5%

Chanh Phu Hoa 20 38.5% 17 40.5%

Total 52 100.0% 42 100.0%

(Source: Questionaires of Social Investigation Report of the project –2010).


Page | 39

For drilled well or opened well, people often apply preliminary filtrationbefore use by sand, grave filter tank.

As mentioned above, families can combine using different water supplysources. However, rate of families who use drilled well still occupies thehighest, about 70-80%, of which the highest in Chanh Phu Hoa has 231households, occupied 53.9%, rate of hosehold use drilled well in Thoi Hoa has198 households, occupied 46.1%.

There are totally 34 households using opened well, of which number ofhousehold using opened well water for eating, drinking is 34 households andnumber of households using this water source for bathing and washing is 82households. The highest rate of households using opened well water in ChanhPhu Hoa occupied about 70.6%.

The survey result showed that there are still 5 households using waterfrom pond/river for bathing and washing. This is very polluted water source.Though local people are good aware of risk of diseas if using this water, but theyare lack of clear water source and continue using at present time.

The survey result of households in studied area under this project showedthat 52 households have tap water, it implied that tap water system is availablein this region, at present about 105 of households living in Thoi Hoa communesare supplied with clear water. Among families using tap water, number ofhouseholds in Thoi Hoa occupied a large number, about 60-70%

d. Health situation and health care of people

Usual diseases are influenza, headache, diarrhoea and allergy and skindiseases. These diseases are being catched by the poor and fair income familiesin communes, besides, other diseases as parasistic worms, stomach ache,hepatitis type A, amebic dysentery. Other water related diseases as: diarrhoea,parasistic worm, itching, gynaecology, which are caused by unensured sanitationconditions in the region, water sources being used by local people are polluted.

Ideas of families is summarised in the following table .

Table 5.5: water and environment sanitation related diseases

Types of diseases Number of HH Rate (%)

Influenza 225 43.2

Headache 204 39.2

Diarrhoea 328 63.0

Amebic dysentery 104 20.0


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Types of diseases Number of HH Rate (%)

Sore eyes 104 20.0

Cholera 92 17.5

Allergy 108 20.7

Gynaecology 87 16.7

Parasistic worms 52 10.0

Hepatitis type A 78 15.0

Stomach problems 282 54.2

Skin problems 205 39.4


Diarrhoea, allergy and skin diseases are the most related and affected byenvironment and water source. Rate of evaluated households related to watersource and environment sanitation of these three diseases is 63.0%, 20.7% and39,4% accordingly.

Table 5.6: Community awareness on disease causes.

Causes Number ofHh

Rate (%)

Dank house 58 11.1

Fly, mosquito fromwaste/disintergrated droppings

323 62.1

Flooded/muddy road 124 23.8

Noise/dust from factories 156 30.0

Polluted water sources 436 83.8


Talking about cause of these diseases, there is 83,8% opinion claimed itfor polluted water, 62.1% by environment, fly, mosquito from rubbish not yet


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collected and treated. Thus, water source pollution and unensured environmentsanitation are main causes for related diseases.

(3) Cultural assets in project areaPeople’s Committee of Tan Uyen district, Ben Cat district and Thu Dau Mottown confirmed that there is no cultural assets and sensitive areas properlyinfluenced by this subproject.


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5.2 ENVIRONMENT QUALITY SITUATION IN PROJECT

5.2.1 Air quality situation

According to analysis result of air quality in project area showed that it meetquality for air in ambient environment as standard QCVN 05:2009/BTNMT vàQCVN 06:2009/BTNMT of Ministry of natural Resources and Environment.

Table 5.7: Result of air quality measurement in residential area hamlet 6 – My Phuoc 3industrial park

Result

No Norm/Unit Position1

Position 2 Position 3Standard

05:2009/BTNMT

1 Identify dust content (µg/m3)(*) 29 19 19 300

2 Identify CO content (µg/m3)(*) 99 71 56 30.000

3 Identify SO2 content (µg/m3)(*) 29 27 17 350

4 Identify NO2 content (µg/m3)(*) 12 10 10 200

5 Identify temperature (0C) (*) 33 33 33 -

6 Identify moisture (%) (*) 65 67 67 -

Note: (*) recognised by standard ISO/IEC 17025Position1: crossroad of NE2 and DE1; Position 2: Kindergarten and park area;Position 3: near land lot H3 on road NA7

5.2.2 Surface water situation in project area

Binh Duong Water Supply Sewerage Environment Co., Ltd coordinated withNatural Resource and Environment Monitoring Center to take sample of surface waterfrom different points in Dong Nai river as follows:

Position 1: upstream of Dong Nai river, 500m far from intake point (closed to riverbank, near the pumping station)

Position 2: upstream of Dong Nai river, 500m far from intake point (in the middle ofriver)

Position 3: upstream of Dong Nai river, 500m far from intake point (closed to riverbank, opposite to the pumping station )

Position 4: at the intake point, 5m from pumping sewer

Position5: at the intake point, in the middle of the river

Position 6: downstream of Dong Nai river, 500m far from intake point (closed to river


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bank near the pumping station)

Position7: downstream of Dong Nai river, 500m far from intake point (in the middle ofriver)

Position 8: at intake point, near river bank, opposite to pumping station

Position 9: downstream of Dong Nai river, 500m far from intake point (closed to riverbank, opposite to the pumping station)

Table 5.8: Analysis result of water quality in Dong Nai river


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ResultNo Norm/Unit

Testmethod/measurement

equipmentPosition1 Position2 Position3 Position4 Position5 Position6 Position7 Position8 Position9

Standard

08:2008/

BTNMT(A2)

1 Identify Ph (*) TCVN 6492-99 7,2 7,2 6,5 6,2 6,3 6,1 7,5 7,6 7,7 6-8,5

2Dissolvedoxygen (DO)(mg/L)

Machine TOA 22A 5,21 5,18 5,20 5,21 5,32 5,29 5,18 5,46 5,28 ≥5

3Nitrate (NO3 –N) (mg/L) (*)

HACH 8171 – 98 0,6 0,6 0,3 0,3 0,3 0,2 0,3 0,5 0,5 5

4Nitrite (NO2 –N) (mg/L) (*)

HACH 8507 – 98 0,008 0,009 0,010 0,009 0,007 0,006 0,009 0,008 0,007 0,02

5Suspendid solid(SS) (mg/L) (*)

APHA-2540-(D)-95 67 68 65 70 72 71 68 76 74 30

6

Chemicaloxygen demand(COD) (mg/L)(*)

HACH 8000 – 98 11 6 8 8 6 7 8 6 6 15

7

Bio-Oxygendemand after 5days (BOD5)(mg/L) (*)

TCVN 6001 – 95 5 3 4 4 3 3 4 3 3 6

8Total iron(Total Fe)(mg/L) (*)

HACH 8008-98 1,72 1,63 1,49 1,74 1,69 1,76 1,83 1,53 1,48 1

9 (Cl-)(mg/L) (*) APHA-4500-Cl-(B)95 91,18 91,25 82,31 81,89 81,54 81,18 94,72 123,79 123,37 400

10(NH4

+)(based on N)

HACH 8038-98 0,69 0,68 0,67 0,67 0,70 0,68 0,71 0,61 0,58 0,2


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(mg/L) (*)

11(PO4

3-)(mg/L) (*)

HACH 8048-98 0,78 1,74 1,14 0,94 0,87 0,91 1,10 0,36 0,35 0,2

12Coliform(MPN/100mL)

TCVN 6187-1-96 300 1.900 2.000 1.100 900 1.200 300 900 800 5.000

13Asenic (As)(mg/L)

TCVN 6626-2008 KPH KPH KPH KHP KPH KPH KPH KPH KPH 0,02

14 Lipid (mg/L) TCVN 7875-2008 KPH KPH KPH KPH KPH KPH KPH KPH KPH 0,02

15

Surfaceactivatedsubstances(mg/L)

HACH 8028 -98 0,101 0,094 0,0099 0,098 0,098 0,097 0,089 0,079 0,079 0,2


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Remarks: all the analysed norms are in compliance with the Vietnamese standardQCVN 08:2008/BTNMT. Except for SS, which exceeds the standard from 2.17 to 2.53times, total Fe which exceed the standard from 1.48 to 1.83 times; NH4

+ which exceedthe standard from 2.9 to 3.55 times; PO4

3- which exceed the standard from 1,75 to 8,7times. However, raw water shall be treated in the water treatment plant beforepumping into transmission network in My Phuoc urban and industrial park.


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5.2.3 Sludge quality from treatment plant

Based on analysis result of sludge from Tan Hiep water treatment plant withsimilar treatment process of raw water, the analysis showed that heavy metal insludge is very low compared to the standard QCVN 03:2008/BTNMT. Analysisresult from Tan Hiep water treatmenr plant as follows:

Table 5.9: Analysis result of sludge from Tan Hiep water treatment plant

No Norm Unit ResultStandard QCVN03:2008/BTNMT

1As mg/kg KPH


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6. ENVIRONMENTAL IMPACTS AND RELEVANT MEASURES OFITS MITIGATION

According to the Environmental Protection Law No. 52/2005/QH11andDecree No. 21/2008/ND-CP, My Phuoc urban and industrial park water supplyproject classified as a project that does not require report of environmentalimpact assessment. Based on the Law and the Decree, a commitment toenvironmental protection is required. The structure of the commitment must becompliant with the guidance of Circular No. 05/2008/TTBTNMT issued by theMinistry of Natural Resources and Environment dated December 8, 2008. Ingeneral, most of the impacts arising from the construction project is active. Asstated in the content of cultural property in Section 5.1.2, the scope of theproject does not affect the work of religious beliefs, sensitive areas and none ofthe house, cultural works need to be dismantled and relocated, so there is noimpacts on the cultural facilities, sensitive areas. The scale of the project is notlarge, short construction period of about three years, some activities such asexcavation, installation of piping, material and waste transportation ... areconsidered just cause local, short and temporary impacts, and they can bemitigated. Overall impact assessment of the project is in Table 6.1


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Table 6.1: Overall Assessment Matrix of Project Environmental Impacts

Project

activitiesImpacts Impacted Objects

ImpactCharacteristi

cs

Scopeof

Impacts

Level of Impacts Measures of Mitigation

I. Phase 1. Basic Construction

1. Levelling,construction

- Society-Economy- Landscape

Certain, short-term

Narrow- Weak- Average

2. Transportationof Constructionmaterials, plants,equipment…

- Transportation- Soil environment- Atmosphereenvironment

Mobile,short-term

Broad- Strong- Weak- Average

3. Excavationand levelling ofsand, soil

- Construction

solid wastes,

domestic solid

wastes…

- Dusts,

hazarous

exhaust fumes

(CO, NOx,

SOx,…)

- Noise,

vibration

- Society-Economy- Occupational Safety- Atmosphereenvironment- Water environment- Landscape

Certain, short-term

Broad

- Weak- Average- Weak- Weak- Strong

- Construction of rolling, a reasonableschedule of construction, clean up wherecompletion.

- Watering to extinguish dust, usingvehicles with low fuel emission,selecting reasonable construction times.

- Construction of temporary toilets,advanced septic system, collectrainwater into a temporary trenchsystem.

- Re-creation of landscape by: plantingtrees.


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4. Constructionof basic andtemporaryworks...

- Domestic

wastewater

- Lubricants,

chemicals...

- Society-Economy- Occupational Safety- Public health- Atmosphereenvironment- Water environment- Landscape- Transportation- Soil environment

Certain, short-term

Narrow

- Weak- Average- Average- Average- Weak- Average- Average- Weak

- To ensure safety during construction

II. Phase 2. The project is put into operation1. Supplydomestic wateron pipelines

2. Operation oftanks

(Almost no impacts)

3. Activities ofstaff

- Noise,

- Domestic

wastewater;

- Hazarouswastes:Lubricants,chemicals;....

- Atmosphereenvironment- Water environment- Soil environment- Public oder &security

Certain, long-term

Narrow Insignificant

- Collect and process in compliance withhygiene regulations ...- Plant trees, ensure safe isolationdistance of residential areas ...- Construction of temporary toilets,advanced septic system, wastewatertreatment system and collect rainwaterinto a temporary trench system…


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6.1 Useful Impacts of the project

In 2009, water supply capacity for the MP3 area was 9.000m3/day (MP3-1 andMP3-2), with the above growth rate, so far the system has operated at fullcapacity. Water supply of the industrial park accounted for about 96% of watersold, the percentage of households in the MP3 which supplied water was only3%. Approximately 97% of the remaining households had to use other watersources of poor quality and unsafe. When My Phuoc urban and industrial parkwater supply project is put into operation, the rate of households water supplymust be at least 90% in MP3 with the population using clean water expected toreach is 90,000 people in 2015 and 122,000 people by 2020 with a standard ofwater supply is 120 liters / person / day&night.

6.2 Environmental impacts and mitigation measures during construction ofwater treatment stations

6.2.1 Impacts and mitigation measures due to land requisitioning

The treatment plant using land reserved for development of Tan Hiep WaterPlant (Tan Hiep WTP) which has completed clearance works and has beenissued Land Using Entitlement Certification No. BA 179271 by Department ofNatural Resources and Environment, so there is no cases of relocation,resettlement.

6.2.2 Impacts and Mitigation Measures due to plant demolishment

The land area of treatment plant was leveled by BIWASE in the project ofTan Hiep water treatment plant. According to surveys at the actual constructionarea of water treatment station, now the project area is mainly a weed growthlayer covering the area, a tree and three Lele brushwood. If we do not proceed toclean the surface thoroughly before leveling, the remaining biomass shall bedisintegrated causing soil and groundwater pollution.

To mitigate the negative impacts caused by the demolishment of biomass onsoil and groundwater, the following measures shall be implemented:

All biomass at the treatment plant area must be completely removed.

Removal biomass shall be collected and processed by the local urbanenvironment company.

6.2.3 Impacts and mitigation measures due to flooding and subsidence

The treatment station located in the reserved land of Tan Hiep WaterTreatment Plant so its rainwater drainage infrastructure has been complete.


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Water arising from the project construction shall be completely drained, there istherefore no flooding and subsidence.

In general, the construction area of the treatment plant built on the groundwhich is covered with a old layer of alluvium soil with relatively good loadingcapacity, it is convenient for work construction with R> 2kg/cm2. From theabove reasons the construction of treatment station can not cause subsidence tothe surrounding works and itself.

6.2.4 Impacts of land from constructi

ENVIRONMENTAL ASSESSMENT AND ENVIRONMENTAL … · 2016. 7. 10. · Phuoc 3 industrial park .....42...

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