introduction of the project - documents &...

TIN NGHIA CORPORATIONNHON TRACH 3 INDUSTRIAL PARK COMPANY LIMITED

VIETNAM INDUSTRIAL POLLUTION MANAGEMENT PROJECT IN DONG NAI, NHUE-DAY RIVER BASINS

ENVIRONMENTAL MANAGEMENT PLAN

Of Project

"CONSTRUCT CENTRALIZED WASTE WATER TREATMENT SYSTEM WITH CAPACITY 2.000

M3/DAY AT NHON TRACH 3 INDUSTRIAL PARK - PHASE 2 (MODULE 2)"

DONG NAI, 05/2012

E3050 v2

TIN NGHIA CORPORATIONNHON TRACH 3 INDUSTRIAL PARK COMPANY LIMITED

VIETNAM INDUSTRIAL POLLUTION MANAGEMENT PROJECT IN DONG NAI, NHUE-DAY RIVER BASINS

ENVIRONMENTAL MANAGEMENT PLAN

Of Sub-Project

"CONSTRUCTION OF CENTRALIZED WASTE WATER TREATMENT SYSTEM WITH CAPACITY

2.000 M3/DAY AT NHON TRACH 3 INDUSTRIAL PARK - PHASE 2 (MODULE 2)"

PROJECT'S OWNER CONSULTANT

DONG NAI, 05/2012

TABLE OF CONTENT

TABLE OF CONTENT..................................................................................................3ABBREVIATE................................................................................................................6LISTS OF TABLES........................................................................................................7CHAPTER 1 INTRODUCTION OF THE PROJECT................................................14

1.1. BACKGROUND................................................................................................141.2. THE PROJECT INVESTOR.............................................................................141.3. PROJECT SITE..................................................................................................141.4. EXISTING INFRASTRUCTURE SYSTEMS OF NHON TRACH INDUSTRIAL PARK NO 3 – PHASE II.................................................................15

1.4.1. List of Industries and Their Wastewater Treatment Capacity.....................151.4.2. Wastewater Collection and Discharge System of the Industrial Park.........191.4.3. Wastewater Treatment System....................................................................201.4.4. Industrial Waste Management System........................................................211.4.5. Transport System.........................................................................................221.4.6. Risk Management........................................................................................23

1.5. THE DESCRIPTION OF CENTRALISED WASTEWATER TREATMENT PLANT......................................................................................................................26

1.5.1. Treatment Technology, Influent and Effluent Characteristics....................261.5.2. The Drainage and Discharge System..........................................................261.5.3. Sludge collection and treatment..................................................................381.5.4. Total investment and Progression pace of the Wastewater Treatment Plant...............................................................................................................................39

CHAPTER 2 CHARACTERISTICS OF THE WASTEWATER RECEIVING BODY.......................................................................................................................................42

2.1. WASTEWATER RECEIVING BODY.............................................................422.1.1. Discharge location.......................................................................................422.1.2. Local Environment Status...........................................................................432.1.3. Socio-economic Conditions........................................................................462.1.4. Description Of All Discharge Sources With Same Final Discharge Receiving Body.....................................................................................................522.1.5. Nearby Water Supply Intake (within 3km downstream)............................54

2.2. CURRENT ENVIRONMENT STATUS...........................................................542.2.1. Atmosphere Status.......................................................................................552.2.2. Water Quality Status...................................................................................562.2.3. Soil Status....................................................................................................612.2.4. Surrounding Deposit Status.........................................................................61

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2.2.5. Ecological Environment..............................................................................63CHAPTER 3 ALTERNATIVE SOLUTION...............................................................67

3.1. STANDARDS OF ALTERNATIVE SOLUTION............................................673.2. DISCHARGE POINT LOCATION...................................................................673.3. WASTEWATER TREATMENT TECHNOLOGY..........................................673.4. SLUDGE TREATMENT TECHNOLOGY.......................................................71

CHAPTER 4 ASSESSMENT ON IMPACTS OF WASTEWATER DISCHARGE AT WATER INTAKE..................................................................................................73

4.1. IMPACTS ON WATER QUALITY (LOAD OF RECEIVING SOURCE AND IMPACT FORECAST USING WATER QUALITY MODELS)............................73

4.1.1. Pollution Load.............................................................................................734.1.2. Assessment on the Impacts on Receiving Sources......................................73

4.2. IMPACTS ON ENVIRONMENT AND AQUATIC ECOSYSTEM................744.3. IMPACTS ON HYDROLOGICAL CONDITIONS..........................................764.4. AIR QUALITY IMPACTS................................................................................764.5. ACCIDENTS RISKS.........................................................................................764.6. SOCIO-ECONOMIC IMPACTS ON WATER SUPPLY IN UPSTREAM AND DOWNSTREAM REGIONS....................................................................................764.7. ACCUMULATED AND INTEGRATED IMPACTS.......................................77

4.7.1. Mareng Pollution Loads Analysis...............................................................774.7.2. Thi Vai Pollution Loads Analysis...............................................................80

CHAPTER 5 POLLUTION MITIGATION TOWARD NEARBY SURFACE WATER.........................................................................................................................83

5.1. Environmental Management Program...............................................................835.1.1. Construction Stage......................................................................................835.1.2. Operation Stage...........................................................................................84

5.2. RISK MANAGEMENT.....................................................................................905.3. Public Consultation and Information Dissemination.........................................96

5.3.1. Public Consultation in EMP Report Preparation.........................................965.3.2. Information Dissemination..........................................................................96

5.4. CAPACITY BUILDING....................................................................................965.5. ENVIRONMENTAL MANAGEMENT ORGANIZATION AND RESPONSIBILITIES OF THE CENTRALIZED WASTEWATER TREATMENT SYSTEM AND THE INDUSTRIAL PARK............................................................97

5.5.1. Environment Department............................................................................975.5.2. Wastewater Treatment Hierarchy................................................................99

5.6. WATER QUALITY MONITORING AND AUDIT OF RECEIVING BODY.................................................................................................................................100

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5.6.1. Monitoring of the Centralized Wastewater Treatment Facility.................1005.6.2. Monitoring of Pre- and Post-Treated Wastewater Quality........................1005.6.3. Monitoring of Water of Receiving Source at the Outlet...........................101

5.7. EMP PLANNED BUDGET AND SCHEDULE.............................................1015.7.1. EMP Budgets.............................................................................................1015.7.2. EMP Schedule...........................................................................................102

CHAPTER 6 PUBLIC CONSULTING.....................................................................1036.1. GOALS OF PUBLIC CONSULTING.............................................................103

6.1.1. Toward Evaluation Authority....................................................................1036.1.2. Toward project owner...............................................................................1036.1.3. Toward consulting agencies......................................................................1036.1.4. Toward the People’s Committee and Fatherland Front Committee..........1036.1.5. Towards the public from affected areas....................................................103

6.2. PUBLIC CONSULTING ACTIVITIES..........................................................1046.3. RESULTS OF PUBLIC CONSULTING.........................................................104

6.3.1. Results from consulting the People’s Committee.....................................1046.3.2. Results from consulting the Fatherland Front Committee........................1056.3.3. Results of public surveying.......................................................................105

6.4. INFORMATION PUBLICATION..................................................................1136.5. PROMISE FROM PROJECT OWNERS........................................................113

APPENDIX.................................................................................................................115

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ABBREVIATIONS

BOD : Biochemical oxygen demandCEPT : Common Effluent Treatment PlantCOD : Chemical Oxygen DemandDO : Dissolved OxygenDONRE : Department of Natural Resources and EnvironmentsEIA : Environmental impact AssessmentEMP : Environmental Management PlanENTEC : Environmental Technology CenterIP : Industrial ParkIZA : Industrial Zone AnthorityLtd. Co : Limitted CompanyMONRE : Ministry of Natural Resources and EnvironmentsQCVN : Vietnam National RegulationTSS : Total Suspended SolidVACNE :Vietnam Association for Conservation of Nature and Environment

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LISTS OF TABLES

Table 1: Industries in Nhon Trach 3 Industrial Park, Phase 2.......................................10Table 2: Industries outside of Nhon Trach 3 Industrial Park, Phase 1..........................13Table 3: main polluting parameters of Nhon Trach 3 – Module 2 IP...........................21Table 4: Influent and the effluents ww characteristics of Module 1 versus the QCVN 40:2011/BTNMT...........................................................................................................24Table 5: Firms under Tin Nghia managements.............................................................27Table 6: Other firms that is not under Tin Nghia managements...................................27Table 7: Mixing Rates...................................................................................................29Table 8: Projecting of the investment............................................................................31Table 9: Monthly temperature from 2007 to 2011 – Dong nai province......................36Table 10: Monthly humidity from 2007 to 2011 – Dong nai province.........................37Table 11: Average annual rainfall Dong Nai................................................................37Table 12: List of all wastewater discharge sources from Nhon Trach 3 IP..................44Table 13: The demographic of nearby residential areas to Thi Vai river......................45Table 14: Location of atmosphere quality testing is as below......................................47Table 15: Sampling and analyzing methods..................................................................47Table 16: Results of Nhon Trach 3 – Phase 2 air quality..............................................47Table 17: Tap Water quality..........................................................................................48Table 18: Locations of Surface water Sample...............................................................49Table 19: The sampling method for surface water........................................................50Table 20: Surface water quality.....................................................................................51Table 21: Underground water quality of Nhon Trach 3 IP (Sampling date: 17/04/2006)...................................................................................................................52Table 22: Soil quality in Nhon Trach 3 IP – Phase 2....................................................53Table 23: Results of the sludge sampling.....................................................................54Table 24: The sampling results of the sediments underneath Thi Vai river..................54Table 26:The characteristics of the IP centralized wastewater treatment (Phase 2 - Module 1), September 2011..........................................................................................58Table 27: The characteristics of the IP centralized wastewater treatment (Phase 2 -Module 1), fourth quarter, November 2011..................................................................59Table 28: Pollutant Load in Wastewater of Nhon Trach 3 IP Treatment Plant............63Table 29: Pollution load of Mareng.............................................................................66Table 30: The max pollution load that nearby surface water sources can receive........67Table 31: The current pollution loads...........................................................................67Table 32: Pollution loads from discharge sources.........................................................68Table 33: Mareng pollution loads receiving capacity after received the discharge......68Table 34: Pollution load of Thi Vai.............................................................................69Table 34: The max pollution load that nearby surface water sources can receive........69Table 35: The current pollution loads...........................................................................70Table 32: Pollution loads from Mareng into Thi Vai....................................................70Table 37: Mareng pollution loads receiving capacity after received the discharge......70Table 39: EMP Budgets................................................................................................85Table 40: EMP schedule...............................................................................................85Table 41: Public surveying...........................................................................................89

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SUMMARY OF THE ENVIRONMENTAL MANAGEMENT PLAN

Nhon Trach 3 IP One member Affiliated Co., Ltd is authorised by Tin Nghia Corporation to manage the infrastructures of the IP; hence is also responsible for the implementation of the CETP (Module 2), capacity 2,000 m3/day in Nhon Trach 3 IP. This EMP is constructed by the Environmental Technology Center (ENTEC), part of Vietnam Association for Conservation of Nature and Environment (VACNE). The contents of the plan is as below

1. PROJECT CONTENTS

1.1. Description Aim: to satisfy the increasing in number of firms within the IP and the arisen demand of wastewater treatment through the development of Module 2 CETP ,capacity of 2,000 m3/day” (the total capacity of two modules is 4,000 m3/day and night)

Project Owners: Nhon Trach 3 IP One member Affiliated Co., Ltd

Site Location: Road No. 2, Nhon Trach Industrial Park No. 1, Phase II, Nhon Trach District, Dong Nai Province.

The Module 1 centralised wastewater treatment system have original capacity of is 2,000 m3/day the system ahs been receiving and treating wastewater of operating industries in the industrial park. Currently the average wastewater volume is 884m3/day; nd peaked at 1,169m3/day. By November 2012, the total wastewater volume of Nhon Trach 3 IP, Phase 2 will increase to around 3,000 m3/day. To properly collect and treat this wastewater, Tin Nghia has been developing the second module to expand the total capacity of the wastewater treatment facility of Nhon Trach 3 IP, Phase 2 to 4,000m3/day.

1.2. CETP treatment technologyWastewater from Nhon Trach 3 IP, phase 2 is treated by two steps as follows:

1st Step (facilities own treatment): the wastewater from private companies will be treated preliminarily, to meet the influent standard of IP centralised treatment plant.

2nd Step (centralised treatment): Preliminarily treated wastewater is collected into the centralised treatment facility of the industrial park for further treatment ( and meet the QCVN 40:2011/BTNMT – National Technical Regulation on Industrial Wastewater, Column B, Kf=1.0, Kq=1.1) prior discharging into the environment

Module 2 technology for Nhon Trach 3 IP CETP can be described as below:

Preliminary and Primary Treatment:+ Removal of wastewater constituents (rags, sticks, floatables, grits…).+ Chemical treatment (mixing and flocculation).

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+ Removed floating oils and greases.

Secondary treatment (remove biodegradable organics):+ Aerobic treatment to removal biodegradable nutrients, BOD, COD.

Tertiary treatment:+ Advanced treatment by remove residual suspended solid and dissolved materials.+ Disinfection.

Sludge treatment:+ Dewater and compact the dried sludge.

1.3. CETP characteristics The effluent after treatment will be flown through the open ditches B4000, then closed pipes B3000 before being directed along the upper stream of Lo Ren canal (along regional slopes toward southeast), and finally being discharged into Thi Vai River.

The discharge schedule is 24 hours a day.

Discharge flow rate is 84 m3/hr (or up to 2000 m3/day)

1.4. CETP implementation schedules June/ July 2012: Finished legal works

Aug-Dec 2012: Start the construction

Jan 2013: Implement equipments, pipeline networks.

Feb 2013: Pilot Run

Mar- Apr 2013: Technology and system transfering

2. CHARACTERISTICS OF WASTEWATER RECEIVING BODY BASIN

2.1. Discharge points

Discharge point: Lo Ren Culvert (near Lo ren Bridge) and at coordinates (VN2000):

X: 1.184.745 m;

Y: 413.438 m.

2.2. Characteristics of wastewater receiving body

Thi Vai River is the wastewater receiving body for all of Nhon Trach 3 wastewater and currently is heavily polluted due to wastewaters from nearby sources. River flowrate mixed with flood is peaked at 3,400 m3/s, with river with tide reverse flow peaked with tide at 2,300 m3/s. River flowrate during wet season is around 350 – 400 m3/s and during dry season is around 200 m3/s. The minimum recorded flowrate is 40 – 50 m3/s. The highest river speed could reach 1.5 m/s. Thi Vai River based on Dong nai Province planned landuse, is for aquaculture farming

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2.3. Nearby discharge sources

Nearby discharges sources into Thi Vai River is as below:

Industrial sources: Discharges from Hung Nghiep Formosa, Nhon Trach 2 and 3 IPs, with a flowrate of approximate 20,500 m3/day

Agricultural sources: The total volume of wastewater from aquaculture activities discharged into Thi Vai river is estimated at 7,043,760 to 9,391,680 m3/farming season. Most of these wastewater is discharged only after harvested (after around 3-4 months)

Residental sources: Domestic wasteater from Long Tho Commune, Nhon Trach District and Hiep Phuoc District is 1,467 – 1,956 m3/day.

2.4. Nearby water supply intake

Within 3 km downstream of Thi Vai (from Mareng discharge point), there’s no river water intake sites, even for industrial or aquaculture purposes.

2.5. Current environmental status Air quality: The analysed sampling results from nearby air quality samples showed all parameters met QCVN 05:2009/BTNMT, QCVN 26:2010/BTNMT, and QCVN 06:2009/BTNM

Surface Water quality: The analysed sampling results from nearby surface water quality samples comparing to QCVN 08:2008/BTNMT, column B1 showed parameters like COD, BOD and TSS over the standards.

Soil quality: The analysed sampling results from soil samples showed no heavy metal pollution

3. ALTERNATIVE SOLUTION

3.1. Discharge point location

As the Module 2 used the same discharge point with the Module1, hence there’s no alternative solution for the discharge point location

3.2. Wasteawter treatment technology

As the Module 2 have to integrate into Module 1, hence there’s no alternative solution for the already chosen technology in Module 1

3.3. Sludge treatment

As the sludge treatment of Module 1 still can provide the extra capacity, hence the Moduel 2 still use the same method as Module 1

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4. DISCHARGE IMPACT ASSESSMENT

4.1. On water quality

After the Module 2 start operating, a flow of 2,000 m3/ day will contribute into Mareng Canal flow, bring with it an equivalence of 31.6 kg TSS, 14 kg BOD5, 104 kg COD, 0.76 kg ammonia and 0.36 kg Total iron

4.2. On the ecology

Currently, there is no expected impact by the discharge onto the ecology and mangrove areas downstream (Long Thanh – Nhon Trach areas)

4.3. On river flow

The discharge rate from the CETP (Module 2) is insignificant comparing to Mareng and Thi vai river, hence won’t affect the river and canal flow

4.4. On air quality

The discharge from The CETP does not produce odour as from the interviews toward the residential areas and hence does not impact onto regional air quality

4.5. Associated risks and accidents

Due to the low discharge rate 2,000 m3/day or 23.14 l/s, the discharge won’t affect the travel of canoes on the canal and rvier

4.6. Socio-economical impacts

There’s no negative feedbacks from the nearby residential areas (around Mareng and Thi Vai) on whether their socio-economical situations are affected by the project

4.7. Accumulated and integrated impacts

For Ma Reng Canal, after received the treated wastewater from the IP will still be able to sustain the loads of parameters BOD, SS, As, Pb, Cd and Hg. Only COD already over the river maximum pollution loads; due to the current pollution load of Mareng is already higher than the Canal max pollution load. In that way, even when the pollution loads from the CETP contribute unsinificant amount, the river still can’t receive more loads.

Similarly for Thi Vai River, after received the treated wastewater from the IP will still be able to sustain the loads of parameters BOD, COD, As, Pb, Cd and Hg. Only COD already over the river maximum pollution loads; due to the current pollution load of Mareng is already higher than the Canal max pollution load. So even when the

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pollution loads from the CETP contribute unsinificant amount, the river still can’t receive more loads

5. POLLUTION MITIGATION TOWARD NEARBY SURFACE WATER

5.1. Environmental Management Program

5.1.1. Construction stages

Water pollution mitigation measures

Air pollution mitigation measures

Mitigation measures for smpacts from solid wastes

5.1.2. Operation stages

Water pollution mitigation measures

Air pollution mitigation measures

Negative impacts mitigation for solid wastes

Negative impacts mitigation for sludges

5.2. Risks managements

5.2.1. Constructs stages

Measures to prevent and mitigate the impacts of these risks:

Risk of fires and explosions

Traffic Accidents

Risks associated with labour and health safety

5.2.2. Operation stages

Measures to prevent and mitigate the impacts of these risks:

Risk of fires and explosions

Risks associated with labour and health safety

Chemical leakage

Thunder/ lightning

Impactsassociated when the plant stop operating

5.3. Public consulting and Information publication

During the construct of this EMP, the project owner have consult the local government (People Committee, Fatherland Front Committee) and the residents living in affected areas

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5.4. Capacity building

The project owners will carry own measuress to strengthen the capacity to react against environmental and CETPworkers health risks.

5.5. Project owner organisation and responsibilties

The issues related to environmental management will be implemented by the CETP Environmental Department as regulated plan

5.6. Environmental quality Monitoring

The project owners will be responsible for the monitoring of nearby surce water sources, along with the periodic sampling of Nhon Trach 3. The results will be presented to authorised body of local government as required

5.7. Costs and schedules of EMP

6. PUBLIC CONSULTING

The project owners carried out consultations with the following subject groups:

- People Committee, Fatherland Front Committee of Long Tho Commune where generally these two local governmental bodies have provided their opponents over the proposal and the measures mentioned in this EMP

The residents living near the site and under effects of the project, where 17/24 agreed with the projects, while most of others does not give comments on it. The residents also mentions the issues of flooding during rains and the stagnation of effluent in the canal during the dry season

Commitment From Tin Nghia

The project owners commit to meet Vietnam regulations during the construction and operations

The project commit to apply all of risks control measures as presented in the plan, while promote internal capacity building and environmental awareness, to ensure best environmental management plans for the project will be carried out. The project owners will under full responsibilities if violating Vietnam regulations or International Convention

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CHAPTER 1 INTRODUCTION OF THE PROJECT

1.1. BACKGROUND

“Socio-economic development in line with environmental protection” is a proper sustainable development policy which was selected by all of the members under United Nations. It therefore considered seriously by the Vietnamese Government to address and minimize any negative impacts in the country quest of industrialization and modernization.

In compliance with the existing regulations over the environmental qualities within and surrounding Nhon Trach 3 Industrial Park, Tin Nghia Corporation have invested in the implementation of a centralised wastewater treatment system (Module 1) in Nhon Trach 3 Industrial Park- Phase 2, capacity of 2,000 m3/day and night. This Module 1 central wastewater treatment system was officially put into operation since November 2007, meeting wastewater treatment requirements and demands from Nhon Trach 3 Industrial Park, and Vietnam environmental regulations

However, under increasing number of facilities within the industrial park, the wastewater discharge demand has been increasing rapidly. That’s why the project entitled “Development of the Central Wastewater Treatment System, Phase 2, capacity of 2,000 m3/day and night (the total capacity of two phases is 4,000 m3/day and night) has been proposed to meet the wastewater treatment demand in the industrial park.

1.2. THE PROJECT INVESTOR Nhon Trach 3 IP Investor Group: Tin Nghia Corporation Representative: Mr. Quach Van Duc - Position: General Director

Address: No. 96, Ha Huy Giap Street, Quyet Thang Ward, Bien Hoa City, Dong Nai Province.

Telephone No.:061.3822486 Fax No.: 061.3823747

The assigned unit to manage the services of infrastructures of Nhon Trach 3: Nhon Trach 3 IP One member Affiliated Co., Ltd

Representative: Mr. Nguyen thanh Binh - Position: Director

Address: 25B Road, Hiep Phuoc Commune, Nhon Trach District, Dong Nai Province.

Telephone No.:061.3822486 Fax No.: 061.3823747

1.3. PROJECT SITE

Site Location: Road No. 2, Nhon Trach Industrial Park No. 1, Phase II, Nhon Trach District, Dong Nai Province.

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1.4. EXISTING INFRASTRUCTURE SYSTEMS OF NHON TRACH INDUSTRIAL PARK NO 3 – PHASE II

Nhon Trach 3 IP, Phase II covered a total area of 360.5 ha. The IP’s EIA report was approved by the Ministry of Natural Resources and Environment(MONRE) at Decision No. 1696/QD-BTNMT dated November 15, 2006. The IP has been attracting various industries including garment and textile, footwear and leather, machine manufacturing, food processing, medicine and cosmetics, material technologies, interior decoration, wooden product processing and services such as banking, telecommunication, public cleaning service, warehouse, workshop rental among others.

Area: 360.5 ha with the construction area of 262.5 ha (65.7% of total area)

29 investment facilities’ licenses were granted so far in Nhon Trach 3 IP.

The occupied area: 126.95 ha; sharing 48%.

The unoccupied area: 136 ha; sharing 52%.

Tree growing area: 61.29 ha; sharing 17%.

1.4.1. List of Industries and Their Wastewater Treatment Capacity

Below table summarizes industries in Nhon Trach 3 IP, Phase 2, with their size and busines (as of April 2012)

Table 1: Industries in Nhon Trach 3 Industrial Park, Phase 2

No. Industries Area (m2) Business

Notes

Operating Industries

01 Viet Long Packing Co. Ltd. 50,000 Paper packing

manufacturing

Have pre- treatment plant

02 SPC Tianhua Co., Ltd (Vietnam) 20,000

Manufacturing of chemicals for wastewater treatment industries

No pre- treatment

03

Tin Nghia Construction Material One-member Affiliated Co., Ltd.

62,429 Brick and tile manufacturing

No pre- treatment

04 Shun Yin Ceramics Materials Co., Ltd. 20,000 Ceramics manufacturing No pre-

treatment

05

Le Phan Construction Co., Ltd. 20,613 Fresh concrete

manufacturing No pre- treatment

0 Ampharco Cosmetics 64,377 Pharmaceutical product Have pre-

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6 Joint Stock Co. manufacturing treatment plant

07 Bueno Technique Co., Ltd. 68,053 Manufacturing of valves

and steeless spare parts


08 CSB Battery Co., Ltd. 100,000 Dry battery manufacturing


09 Velco Co., Ltd. 30,000Machine and equipment manufacturing for steel industries

No pre- treatment

10 Kirby Southeast Asia Co., Ltd. 65,862 Steel structure processing No pre-

treatment

11 EU Construction Material Co., Ltd. 30,000 PVC door and partition


12 Tan Tien Plastic JS Co. 50,000 Plastic No pre-

treatment

13 Towa Vietnam Co., Ltd. 17,000 Plastic home appliances


14 Sammi Co., Ltd. 17,052 Steeless steel wire and net manufacturing


15 An Lac Nhon Trach Co., Ltd 24,000 Toilet paper processing No pre-

treatment

16 Plus Vietnam Industry Co., Ltd 30,000 Stationery manufacturing


17Y.S.P Vietnam Co., Ltd. (experimental operation)

68,000 Pharmaceutical product manufacturing


18 Soltec Vietnam Co., Ltd. 20,000

Manufacturing of industrial equipment, environmental treatment equipment, industrial steel pipe and construction scaffolding

No pre- treatment

19 Kyowa Vietnam Co., Ltd. 15,000

Manufacturing of steel and stainless steel components, industrial pipe, industrial valve and cranes

No pre- treatment

20 Rohm and Haas Co., Ltd 40,764 Polymer chemical

manufacturingNo pre- treatment

Temporarily Closed Industries

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21 Ho Thanh Industry Co., Ltd. 10,000 Polymer plastic

manufacturing -

Under-construction Industries

22Eastern Sai Gon Concrete JS Co. (DSC)

15,000 Pre-cast concrete components manufacturing

-

23 MKTP Co., Ltd. 12,000

Manufacturing of metal components, mechanical processing, industrial machine installing, automobile and motorcycle maintenance, etc

-

24 Promax Textile Vietnam Co., Ltd 100,000 Processing of fiber, woven

fabric -

25 JFE Mechanical VN Co., Ltd. 25,000

Industrial and environmental treatment equipment

-

26 YKK Vietnam Co., Ltd. 130,495 Zipper materials -

27 TANAKA Scale Vietnam Co., Ltd. 20,000 Industrial scales -

Under-Investment Processing Projects 331.401

28 D.N Tan Dai Kim Joint Stock Co. 43,906 Manufacturing of plastic

door with steel frame -

29 Nhan Duc Vietnam Co., Ltd. 70,000 Plastic frame manufacturing -

TOTAL 1,239,551

Furthermore, based on Decision 2376/QĐ-UBND dated 24/7/2008 of Dong Nai People’s Committee, the project treatment plant will also collect the wastewater from facilities from Formosa (of Nhon Trach 3 IP- Phase 1) and 51.73 ha of Tin Nghia service center. At this moment the treatment plant has collected and treated ww from the 16 ha of Tin Nghia service center and 11 facilities (as below)

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Table 2: Industries outside of Nhon Trach 3 Industrial Park, Phase 1

No Industries Business Area (m2)

I. OPERATING SERVICES AND THE SERVICE CENTER 16 HA1 YoungTex Vina Co., Ltd. Clothing industry 30,0002 Sinpoong Vina Co., Ltd. Zipper materials 10,0003 Hung Ta Co., Ltd. Steel industries 30,0004 TM Thai Nong Co., Ltd. Pesticides pouring and

distributing5000

5 Kim Long Co., Ltd. Concrete manufacturing 21,0006 Han Huu Co., Ltd. Concrete manufacturing 15,0007 Song Hui Co., Ltd. Under construction (office) 1,5008 Tung Kong Co., Ltd. Aquaculture product

processing12,000

9 Service providing center/ supermarket

Office rent for companies in the IP

160,000

II. UNDER CONSTTRUCTION10 Thanh Thuy V&T Co., Ltd. Paper recycling 20,000III. TEMPORARY CLOSED11 Der Fuh Co., Ltd. Concrete manufacturing 2,00012 LiShin Co., Ltd. Concrete manufacturing 15,000

Industrial wastewater of industries in Nhon Trach 3 IP, Phase 2 will be treated and meet the wastewater treatment contract prior to discharging (attached Table of Allowable Limits of Concentration of Parameters prior discharging to the wastewater treatment system of Nhon Trach III in the appendix).

The wastewater discharge system of 20 operating industries has been connected to the centralised wastewater treatment system as signed under wastewater treatment contract with the Infrastructure Management Unit

Among them, 7 already have their own treatment systems for pre-treatment before being discharged into the centralized wastewater treatment system, they are:

o Viet Long Packing Co.

o Ampharco Cosmetics Joint Stock Co. Ltd,

o Bueno Technique Co. Ltd.,

o CSB Battery Co., Ltd

o And Sammi Co., Ltd.

o Plus Vietnam Industry Co., Ltd

o Y.S.P Vietnam Co., Ltd

The Module 1 centralised wastewater treatment system have original capacity of is 2,000 m3/day the system ahs been receiving and treating wastewater of operating

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industries in the industrial park. Currently the average wastewater volume is 884m3/day; nd peaked at 1,169m3/day.

Wastewater is treated to meet Vietnam National Regulation QCVN 40:2011/BTNMT; column B, Kq=1.1; Kf=0.9 prior discharging through Lo Ren Discharge Point, and ultimately into Thi Vai River.

The Phase 2 addition of the treatment facility was examined and certified by Dong Nai Department of Natural Resources and Environment at Official Document No. 652/TNMT-CCBVMT dated March 18, 2010 and by Dong Nai People’s Committee under license No. 3571/GP-UBND in December 1, 2009 (see attached documents in the appendix).

The company also has installed an automatic monitoring system to monitor the effluent quality (pH, DO, TSS, COD, temperature).

1.4.2. Wastewater Collection and Discharge System of the Industrial Park

1.4.2.1. Wastewater Collection System

The sewage system was entirely developed by Tin Nghia Corporation. The slope is inclined toward south west: with the elevation varies from 1 to 3.5

m. Wastewater is classified into two storing basins N1 and N2. In each basin, the wastewater is ran through reinforce concrete box culvert D300 – D400 – D600 and through the primary culvert system D800 – D1000 – D1200 to the centralised wastewater facility via D1500 culvert line. The wastewater discharge culverts are RC culvert, with manholes at the interval of 40-50 m along the culvert long. The sewage system covers total length of 15,704 m, comprising of D300 = 10,038 m, D400 = 1,777 m, D600 = 1,489 m, D800 = 982 m, D1000 = 1,188 m, D1200 = 210 m, D1500 = 56 m.

The treated wastewater is discharged to the environment via open ditch concrete culvert canal (B4000, 235 m in length) and closed box culvert (B3000, 524.3 m in length) before being discharged into Lo Ren canal, and ultimately ends up in Thi Vai River.

1.4.2.2. Drainage System

Tin Nghia Corporation also developed the drainage system. The drainage system is the RC culvert, covering 30,211.4 m long, comprising of D600 culvert = 2,042 m, D800 = 6,905.6 m, D1000 = 7,020.2 m, D1200 = 485.6 m, D1500 = 11,254.2 m, open ditch B2000 = 997.5 m, B4000 = 982 m, and closed box culvert B3000 = 524.3 m.

People’s Committee of Nhon Trach District has only invested in the development of the drainage system along Road 25C. Comapnies along Road 25C (in Nhon Trach 3 IP, Phase I and Phase II) will have to continue the development and connect to the drainage system.

When the local goverment develops the drainage system along Road 319B, the private sector will have to continue implementing a drainage system to connect from Youngtex Vina to the current one

19

The stormwater in Nhon Trach 3 IP, Phase II is collected into the above concrete culverts, is run along the internal roads before being discharged to open ditch (the same one hosted the treated wastewater from the central wastewater treatment system) then being discharged into Mareng canal, and ultimately ends up in Thi Vai River. .

1.4.3. Wastewater Treatment System

Wastewater from Nhon Trach 3 IP, phase 2 is treated by two steps as follows:

1st Step (facilities own treatment): the wastewater from private companies will be treated preliminarily, to meet the influent standard of IP centralised treatment plant.

2nd Step (centralised treatment): Preliminarily treated wastewater is collected into the centralised treatment facility of the industrial park for further treatment ( and meet the QCVN 40:2011/BTNMT – National Technical Regulation on Industrial Wastewater, Column B, Kf=1.0, Kq=1.1) prior discharging into the environment

1.4.3.1. The existing firms with prelimary treatment system

Facilities in Nhon Trach 3 IP (Phase 2) which already have own prelimary treatment system are:

No Name Ww discharge rate (m3/day)

1 Viet Long packing Co., Ltd. 702 Ampharco Cosmetics Joint Stock Co. 173 Bueno Technique Co., Ltd. 264 CSB Battery Co., Ltd (Vietnam) 1885 Sammi Co., Ltd. 66 Plus Vietnam Industry Co., Ltd 12 Total 319

As seen in above table, the total ww discharge from the 6 firms are 319 m3/day

1.4.3.2. The under construction firms with preliminary treatment

There is only one firms which currently under construction and already have preliminary treatment plant being set under plan, that is the Y.S.P Vietnam Co., Ltd. with discharge capacity of 6 m3/day.

1.4.3.3. The module 1 ww treatment system

Module 1 of Nhon Trach 3 (Phase 2) CETP have the capacity of 2,000 m3/day, and already under operation since 11/2007

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1.4.3.4. The module 2 ww treatment system

Some facilities are currently under construction at the IP, and already sent the notification on the expected operation time in 2012 and the estimated discharge vlomue. Or more specifically:

Rohm & Haas Vietnam Co., Ltd: April, 2010. The estimated wastewater volume is 80 m3/day

Promax Textile Vietnam Co., Ltd.: July 2012; the estimated wastewater volume is 1,400 m3/day

YKK Vietnam Co., Ltd.: November 2012; the estimated wastewater volume is 250 m3/day.

By November 2012, the total wastewater volume of Nhon Trach 3 IP, Phase 2 will increase to around 3,000 m3/day and night. To properly collect and treat this wastewater volume to the existing requirement (Decision No. 1696/QD-BTNMT dated November 15, 2006 of MONRE on approving EIA report of Nhon Trach 3 IP, Phase 2), Tin Nghia has been developing the second module to expand the total capacity of the wastewater treatment facility of Nhon Trach 3 IP, Phase 2 to 4,000m3/day and night.

1.4.4. Solid Waste Management

Based on the collected information, 17 of total 20 companies there have already been granted “hazardous solid waste registration books”. The last 3 companies are preparing paperwork to get the hazardous waste owner registration book.

1.4.4.1. Solid Waste Management of Nhon Trach 3 IP One member Affiliated Co., Ltd.

The IP got the hazardous waste registration book No. 587/SĐK-TNMT dated November 5, 2010, with hazardous solid waste management code No. 75001375.T.

Domestic solid waste: The IP contracted Ha Long Bay Co., Ltd to collect the domestic solid waste properly (attached with the report is the solid waste collection contract).

Hazardous Solid Waste: The IP contracted Tai Tien Co. Ltd to collect, transport and treat hazardous solid waste appropriately.

1.4.4.2. Solid Waste Management at Industries in Nhon Trach 3 IP, Phase 2

Nhon Trach 3 IP One-member Affiliated Co. Ltd. constructed the solid waste transit sites and signed the solid waste collection and transport with all companies within the IP. In addition, the company has also negotiated with hazardous solid waste disposal agencies (as mentioned above) to deal with them appropriately (follwoing Circular No. 12/2011/TT-BTNMT dated April 14, 2011 of MONRE on hazardous solid waste management).

21

Nhon Trach 3 IP One-member Affiliated Co. Ltd. Also requested enterprises sorting out wastes at the discharge sources and store appropriately before delivering to the competent agency (the provisions of the land leasing contract).

The solid waste volume is specified as follows:

The domestic solid waste is estimated at 17.423 tons per month, which is mainly collected by Nhon Trach 3 IP One-member Affiliated Co., Hiep Hoa Cooperative, Nhon Long Trade and Service Cooperative among others.

Non-hazardous solid waste is estimated at 58.422 tons per month, which is mainly collected by Bay Ha Long Co., Ltd, Kim Xuan Private enterprise, Tuoi Sang Environment Co., Ltd and private recycling units.

The hazardous solid waste volume is 98.252 ton per month which is collected by Green Viet Environmental Production and Trade Co., Ltd, Viet – Uc Environment Co., Tai Tien Co., Ltd., among others.

1.4.5. Transport System

The internal road system of the industrial park run horizontal and diagonal along three main roads of the city. The ROW of the industrial park roads is as follows:

1. Main Industrial Park Road: Road 4D is the primary road in the industrial park (D is the code of north – south roads)

ROW width: 47.00 m, double road.

Carriage lane width: (3 lanes x 3.75 m/lane) x 2 + 1.5m = 24.00 m.

Median: 3.00m.

Sidewalk and technical corridor on each side: 10.00m.

Step back on each side: 15.00m.

Cross-section code No. 7 – 7.

2. Secondary Road: comprising of Roads 1N and 6D (N: east – west roads)

ROW width: 36.00 m.

Carriage lane width: 20.00 m (4 lanes x 3.75 m/lane) = 15.00 m.

Parking lane: 5.00 m.

Sidewalk and technical corridor on each side: 8.00m.

Setback on each side: 15.00 m.

Road cross-section No. 4 – 4.

3. Tertiary Roads: Roads No. 3D, 5D, 7N and service road along Provincial Roads 25C and 319B.

Roads No. 3D and 5D:

+ ROW width: 31.00 m.22

+ Carriage lane width: (4 lanes x 3.75 m/lane) = 15.00m.+ Sidewalk and technical corridor on each side: 8.00m.+ None stepback.+ Road cross-section No. 5 – 5.

Road 7N:

+ ROW width: 19.50 m.+ Carriage lane width: (2 lanes x 3.75 m/lane) = 7.50m.+ Sidewalk on each side: 6.00m (Cross-section 6 – 6).

Service roads along PR25.C and PR319B:

+ ROW width: 18.50 m.+ Carriage lane width: (2 lanes x 3.75 m/lane) = 7.50m.+ Sidewalk on industrial land lots: 8.00m; sidewalk on PR25C and PR319B: 3.00m (Cross-section 1 – 1 and 2 – 2).

The road system of the industrial park covers 12,416.94 m (rounding to 12.42 km). The primary roads, secondary and tertiary roads have been completely developed. Road area covers 36.64 ha and 1.12 ha depot, increasing the total transport land to 37.72ha, sharing 10.75% of the industrial park area. If one half of the primary road system of the city is included the total road area of the industrial park increases to 37.74 ha + 17.29 ha = 55.03 ha (rounding to 55ha, sharing 15.67 % (see Table of Road Inventory and Main Specifications).

1.4.6. Risk Management

The investor will take proper measures to prevent and response to environmental incidents and risks as follows

1.4.6.1. Fire and explosion

(1). Fire and Explosion Prevention

Workers who work directly at the construction site will be trained on fire and explosion methods.

Inflammable solvents and fuel shall be stored at isolated warehouses, far from ignition sources.

Provide fire and explosion prevention and fighting equipments at fuel warehouses;

Provide proper fire and explosion prevention and fighting equipments in compliance with existing regulations;

(2). Counter-measures

Follow PCCC approved methods by the PCCC

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1.4.6.2. Chemical and Fuel Spill

(1). Preparedness

Departments/divisions who utilize chemical, fuel and lubricant shall be equipped with proper equipment to store clout.

Annually, the team leader shall disseminate emergency preparedness and response knowledge to the team members.

In every six months, the company shall formulate the emergency response rehearsal; record the rehearsal minutes of meeting properly.

(2). Response

The management board shall establish the emergency-aids team properly. The office staff is responsible to send the notice to all workers and staffs.

Any individual who discovers the fuel/chemical spill shall report immediately to the in-charge staff of the emergency-aids team. If he could not contact with the person-in-charge he shall report to the team leader.

The authorized person in each zone shall review the situation and take immediate measure. If the incident is not related to fuel/chemical spill the authorized person shall direct the site clearance properly. If it is fuel and chemical spill that affects to environment or public health prompt measure shall be taken to cope with the situation and separate the site until the incident is addressed.

Persons-in-charge shall minimize environmental pollution and impacts on people’s health.

In case insufficient resources to address the incident, it should be reported to competent agency to get the support.

When the incident is solved the authorized person shall report to EMR on solving situation.

If the incident could not be solved completely and could cause pollution or people’s health, the team leader shall report to EMR and competent agencies for necessary intervention.

1.4.6.3. Power Shortage

(1). Preparedness

The company shall prepare list of electric generator leasing companies (name, address, contact number, email, etc.). Selection of a generator leasing company shall be conducted properly to select the most suitable agency.

When receiving the power cut notice, the office shall confirm to the centralized wastewater treatment facility. The facility manager is responsible to hire the generator properly.

(2). Response

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In case of sudden power cut the operator shall confirm to the facility management and contact to the generator leasing company immediately to hire the generator and operate within 6 hours.

The generator shall be operated to supply power for the treatment system. The generator operation shall be in compliance with the guideline of the generator leasing company.

1.4.6.4. Failure of the Wastewater System

The wastewater system failures are comprised of pipe broken, flooding rainwater, etc.

(1). Preparedness

Proper equipment and tools shall be prepared to close the pipe broken and repair.

In every six months, the company shall formulate the emergency response rehearsal; record the rehearsal minutes of meeting properly.

(2). Response

In case of incident confirmation from the operation staff, cleaning team or other sources, the technical department/the centralized wastewater treatment facility shall response to the incident immediately. In case of insufficient resources, it shall be reported to the manager immediately.

1.4.6.5. Failure of the Treatment System

(1). Preparedness

The treatment system manager shall assign staff to conduct the maintenance as scheduled.

The operator shall prepare proper tools for repairing properly.

The treatment system leader shall prepare the list of maintenance or repairing agencies adequately.

(2). Response

The operator or anyone who detects the failure (equipment damage, components of the treatment system, among others) shall report immediately to the repairing and maintenance manager. In the guarantee period, the manager shall contact to the guarantee agency properly.

If the failure is out of the corporation control the manager shall conduct with the repairing and maintenance agencies.

The repairing shall be conducted within 6 hours since the failure occurs.

Remark: In the rehearsal cases, the team leader shall evaluate the rehearsal results and requirements on activities to have experiences for the afterward turns.

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After every incident solving turn, the team shall address the issue properly, preventing impacts on environment.

Currently, the project owner have finished the construction of finishing ponds, with size 34m x 107.3m x 2.2m and holding a volume of 8,026 m3. This will also temporarily storing the ww if the CETP stop working.

1.5. THE DESCRIPTION OF CENTRALISED WASTEWATER TREATMENT PLANT

1.5.1. Treatment Technology, Influent and Effluent Characteristics

Based on a) the actual condition and requirement of Nhon Trach 3 IP, b) the influent characteristics, and c) the Module 1 technology for the wastewater treatment plant; Module 2 technology for Nhon Trach 3 IP CETP can be described as below:

1.5.1.1. The Step-By Step Processes of the Treatment Plant

Preliminary and Primary Treatment:+ Removal of wastewater constituents (rags, sticks, floatables, grits…).+ Chemical treatment (mixing and flocculation).+ Removed floating oils and greases.

Secondary treatment (remove biodegradable organics):+ Aerobic treatment to removal biodegradable nutrients, BOD, COD.

Tertiary treatment:+ Advanced treatment by remove residual suspended solid and dissolved materials.+ Disinfection.

Sludge treatment:+ Dewater and compact the dried sludge.

The more detail processes of the plant is presented in Section 1.5.2.2.

1.5.1.2. Actual Influent and the Required Effluent Characteristics

The Influent characteristics of the treatment plant are presented in Table 1.5.2.1.

The effluent characteristics have to meet the national regulation QCVN 40: 2011/BTNMT, Column B, Kq=1,1; Kf=1,0

1.5.2. The Drainage and Discharge System

1.5.2.1. Wastewater characteristics

(1). Wastewater profiles

Wastewaters toward the centralized CETP of Nhon Trach 3 IP is industrial and domestic wastewater, which being generated by the operating facilities and workers onsite

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(2). Influent profiles

The highly polluted parameters of the influents depend on the wastewater profiles of the industries within the IP. They can be presented in table below:

Table 3: main polluting parameters of Nhon Trach 3 – Module 2 IP

No Industries Business Main polluting parameters

OPERATING INDUSTRIES

01 Viet Long Packing Co. Ltd.

Paper packing manufacturing

BOD5, COD, TSS, colour, sulfur, temperature

02 SPC Tianhua Co., Ltd (Vietnam)

Manufacturing of chemicals for wastewater treatment industries

BOD5, COD, heavy metals, specific chemicals

03

Tin Nghia Construction Material One-member Affiliated Co., Ltd.

Brick and tile manufacturing

TSS, heavy metal, turbidity

04 Shun Yin Ceramics Materials Co., Ltd. Ceramics manufacturing

Heavy metal, turbidity, temperature, TSS

05

Le Phan Construction Co., Ltd.

Fresh concrete manufacturing


06

Ampharco Cosmetics Joint Stock Co.

Pharmaceutical product manufacturing

COD, BOD5, TSS, TN, TP

07 Bueno Technique Co., Ltd.

Manufacturing of valves and Steeless steel spare parts

Heavy metal, inorganic greases, TSS

08 CSB Battery Co., Ltd. Dry battery manufacturing COD, heavy metal, TSS

09 Velco Co., Ltd. Machine and equipment manufacturing for steel industries

Heavy metal, inorganic grease, TSS

10 Kirby Southeast Asia Co., Ltd. Steel structure processing Heavy metal,

inorganic grease, TSS

11 EU Construction Material Co., Ltd.

PVC door and partition manufacturing

COD, TSS, organic matters

12 Tan Tien Plastic JS Co. Plastic

BOD5, COD, TSS, colour, sulfur, temperature

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13 Towa Vietnam Co., Ltd.

Plastic home appliances manufacturing

BOD5, COD, heavy metal, specific chemicals

14 Sammi Co., Ltd. Steeless steel wire and net manufacturing


15 An Lac Nhon Trach Co., Ltd Toilet paper processing


16 Plust Vietnam Industry Co., Ltd. Stationery manufacturing TSS, heavy metal,

turbidity

17Y.S.P Vietnam Co., Ltd. (experimental operation)

Pharmaceutical product manufacturing

COD, BOD5, TSS, TN, TP

18 Soltec Vietnam Co., Ltd.

Manufacturing of industrial equipment, environmental treatment equipment, industrial steel pipe and construction scaffolding


19 Kyowa Vietnam Co., Ltd.

Manufacturing of steel and stainless steel components, industrial pipe, industrial valve and cranes

COD, heavy metal, TSS

20 Rohm and Haas Co., Ltd

Polymer chemical manufacturing


TEMPORARILY CLOSED INDUSTRY

21 Ho Thanh Industry Co., Ltd.

Polymer plastic manufacturing

COD, TSS, organic matters

INDUSTRIES UNDER CONSTRUCTION

22Eastern Sai Gon Concrete JS Co. (DSC)

Pre-cast concrete components manufacturing

BOD5, COD, heavy metal, specific chemicals

23 MKTP Co., Ltd.



24 Promax Textile Vietnam Co., Ltd

Processing of fiber, woven fabric


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25 JFE Mechanical VN Co., Ltd.

Industrial and environmental treatment equipment


26 YKK Vietnam Co., Ltd. Zipper materials COD, BOD5, TSS,

TN, TP

27 TANAKA Scale Vietnam Co., Ltd. Industrial scales


UNDER-INVESTMENT PROCESSING PROJECTS

28 D.N Tan Dai Kim Joint Stock Co.

Pre-cast concrete components manufacturing


29 Nhan Duc Vietnam Co., Ltd.



The influent for Module 2 will have similar characteristics as Module 1 ww. Based on the design, the influent characteristics of the CETP is: + Average BOD5 : ≤ 600 mg/l+ Average COD : ≤ 1,000 mg/l+ TSS : ≤ 300 mg/l+ Colour : ≤ 100 Pt-Co+ pH : not limited+ Other parameters based on Regulation C of Vietnam.

(3). Effluent required characteristics

The effluent characteristics have to meet the national regulation QCVN 40: 2011/BTNMT, Column B, Kq=1.1; Kf=1.0

(4). Assess the wastewater characteristics with available standard

As the technology from Module 2 of the IP centralized treatment plant is similar is to Module 1, therefore the reports used the influent and the effluents ww characteristics of Module 1 and place it against the “National regulation on industrial ww discharge” QCVN 40:2011/BTNMT (column B) as below

Table 4: Influent and the effluents ww characteristics of Module 1 versus the QCVN 40:2011/BTNMT

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No Parameters Units Influents Effluents Efficiency

(%)QCVN (***)

1 pH - 7.2 7.2 - 5.5 - 9

2 Colour (pH=7) Pt-Co 31 24 22.6 165

3 BOD5 mg/l 31 11 64.5 554 COD mg/l 80 32 60.0 1105 TSS mg/l 58 20 65.5 1656 As mg/l 0.038 0.034 10.5 0.011

7 Hg (**) mg/lUndetected

(LOD=0.0003)

Undetected (LOD=0.0003

) - 0.55

8 Pb mg/l Undetected (LOD=0.01)

Undetected (LOD=0.01) - 0.11

9 Cd mg/l Undetected (LOD=0.005)


10 Cr6+ mg/l Undetected (LOD=0.043)


11 Cr3+ mg/l Undetected (LOD=0.025)


12 Zn mg/l Undetected (LOD=0.1)


13 Ni mg/l Undetected (LOD=0.06)


14 Fe mg/l 0,52 0,27 48.1 3,3

15 CN- mg/l Undetected (LOD=0.005)

Undetected (LOD=0.005) - 0,11

16 Phenol mg/l Undetected (LOD=0.01)

Undetected (LOD=0.01) - 0,55

17 Cl2 mg/l Undetected (LOD=0.1)


18 S2- mg/l 0.063 Undetected (LOD=0,002) 96.8 0.55

19 N-NH3 mg/l 12.9 0.98 92.4 11

20 TN (*) mg/l 15.7 Undetected (LOD=0,01) 99.9 44

21 TP mg/l 2.7 2.06 23.7 6,6

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22 Inorganic Greases (*) mg/l Undetected Undetected - 11

23 Coliforms (**)

MPN/100ml 1400 110 92.1 5,5

24

Organophosphate pesticides (**)

mg/l - - - 1,1

Source: Tin Nghia 05/2011.Note:(*): parameters which has not yet acknowledged by Vilas(**): was sampled by HCM ENTEC(***): QCVN 40:2011/BTNMT Column B Kq=1.1;Kf=1.0LOD: Limit of Detection

As seen, many parameters of module 1 does not meet the regulation QCVN 40:2011/BTNMT column B with Kq=1.1;Kf=1.0.

1.5.2.2. Specifications of discharge system

(1). Basic description

All ww from the IP is collected with a concrete drainage system, through D1.500 pie toward the treatment plant.

From the centralized treatment plant, the treated wastewater is discharged through a network of 235 m open ditches, and 524.3 m closed pipes (total length of 759.3 m)

(2). Treatment Technology Description

The treatment technology is described in

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SORT AND TREAT

APPROPRIATELY

PUMP

GRIT REMOVAL

EQUALISER

PRIMARY CLARIFIER

GREASE TRAP

FLOCULATION

FLOTATION

AERATION TANK

CLARIFIER

DISINFECTION AND MONITOR

STABILISING POND

SLUDGE DEWATERING

COMPRESSOR

SLUDGE TANK

Sludge W

ater

Disinfector

Nutrients

Oxygen

INFLUENT

SCREENING

pH stabiliser

Oxygen

EFFLUENT

Figure 1: CETP diagram

Technology description: The treatment capacity of the IP CETP (from internal firms, through the drainage system) is 2,000 m3/day. The first stage of the preliminary treatment process is the fine screening and grit removal to remove wastewater constituents with diameter larger

32

than 1.5 mm. Next is the wastewater equalising tank with mixing to equalising wastewater characteristics, avoiding sedimentation and anaerobic process. The tank also being injected with chemical to stabilise pH level

If the wastewater have high concentration of heavy metal or colour than designed characteristics, the wastewater will be treated with chemical through flocculation and flotation process in primary clarifier. The clarifier will separate the residue/sludge from influent, before it’s running through grease trap.

The wastewater with low concentration of heavy metal or colour than designed characteristics, will still be ran through primary clarifier, however the flocculation and flotation process won’t happen.

At the grease trap, grease will be separated from wastewater and stored in different container. The main body of wastewater will then be treated in the aerobic tank

The wastewater after being treated with the aerobic process, will be run through the secondary clarifier. Some of the sludge from the secondary clarifier will be fed back to the aerobic tank to provide the foods and maintain the level of microorganism inside the aerobic tank. The rest of the sludge will be pumped out for dewatering and further treatment. The treated wastewater will then be pumped into disinfection tanks for disinfections and monitoring

The stabilising pond acted as buffer to further treat the water before it’s released into the environment

On sludge treatment: sludge from primary and secondary clarifiers will be pumped out for solidified and dewatered (with mixing). Solidified and dewatered sludge are mixed with polymer before finally being compressed. This mud, and the greases from the container will be treated as hazardous wastes. Water from sludge in these processes will be pumped back and mixed with the influent.

(3). Industries’ own treatment systemAt this moment, the IP has 9 firms with their own ww treatment system, before being discharged and treated again in the centralised treatment plant. The more details can be seen in table 5 and 6 below

Table 5: Firms under Tin Nghia managements

No Name Business

Ww system treatment

rate (m3/day)

1 Thai Nong Co. Limited Pesticides Pouring 52 Sinpoong Vina Co. Limited Zipper Manufacturing 50

Source: Nhon Trach 3 IP One member Affiliated Co., Ltd

Table 6: Other firms that is not under Tin Nghia managements

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No Name Business

Ww system treatment

rate (m3/day)

1 Viet Long Packing Co. Ltd. Paper packing manufacturing 15

2 Ampharco Cosmetics Joint Stock Co.

Pharmaceutical product manufacturing 100

3 CSB Battery Co., Ltd. Dry battery manufacturing 328

4 Sammi Co., Ltd. Steeless steel wire and net manufacturing 7

5 Plus Vietnam Industrial Co.Ltd Office stationary manufacturing 40

6 Y.S.P Vietnam Co., Ltd. (experimental operation)

Pharmaceutical product manufacturing 80

7 Bueno Technique Co., Ltd.Manufacturing of valves and Steeless steel spare parts

2

Source: Nhon Trach 3 IP One member Affiliated Co., Ltd

1.5.2.3. Discharge System

(1). Technical aspects of discharge system

1). Industrial wastewater discharge

At the centralized wastewater treatment plant, after treated wastewater is discharged through Lo Ren canal (the regional discharge channel) through a network of open ditches B4000, and closed pipes B3000, with a total length of 759.3 m (B4000= 235 m, B3000 = 524.3 m)

2). Storm water drainage discharge

Storm water is collected by the drainage system running along the internal roads (as mentioned previously), then is gathered and discharged through the drain pipe along D6 road. Finally the storm water is discharged through Lo Ren canal along with the treated wastewater from the treatment plant

Currently all of the firms within the IP have connected their wastewater drainage system toward the IP’s centralized wastewater treatment plant; in oppose to self treatment and discharged into the stormwater pipeline

(2). Discharge method

As mentioned above, waste water after treatment will be flown through the open ditches B4000, then closed pipes B3000 before being directed along the upper stream

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of Lo Ren canal (along regional slopes toward southeast), and finally being discharged into Thi Vai River.

(3). Discharge Schedule

The wastewater treatment plants used the combination of chemical and biological treatment methods (BNR), so wastewater treatment system is operated 24 hours a day.

(4). Discharge flow rate

Standard discharge flow rate currently averaged 6.3 m3/hr (or 152 m3/day)

Maximum discharge flow rate is 84 m3/hr (or up to 2000 m3/day)

1.5.2.4. Operating costs of the CETP Module 1

The operating cost of the CETP Module 1 to treat 1m3 can be calculated based on daily costs divide to the plant treatment capacity

Table 7: Daily operating cost

No Items Cost (VND/day)1 Operating labour costs 1,160,4932 CETP amortisation 3,486,2573 Chemicals 683,0304 PTN Chmicals 40,9205 Power 1,764,1126 Sludge treatment 5,880,0007 Domestic water 140,9368 Maintenance costs 150,000

Total 13,305,749

Considering the CETP treatment rate is 2,000 m3/day, the treatment cost for each m3 of treated ww will be 6,653 VND

Pictures of the CETP Module 1:

35

Figure 2: Wastewater pump

Figure 3: treatment tanks

Figure 4: Finishing pond36

Figure 5: Automatic effluent quality monitor

Figure 6: Sludge treatment

Figure 7: Labs in CETP environmental department37

1.5.3. Sludge collection and treatment

1.5.3.1. Collection and transport processes

Hazardous sludge from the CETP of Nhon Trach 3 IP – Module 2 will be contracted with Tai Tien Co Limited to collect, transport and treat appropriately as below:

Hazardous sludge after was pumped and compressed is marked hazardous and stored separately in hazardous wastes warehouse

Periodically, Tai Tien Co Limited will bring their own vehicles to collect, and travel back with this path: Nhon Trach 3 IP 25B Provincial road 51 national road Thai Lan 3-way crossroads Trang Bom 1A national road Tay Hoa District Tai Tien hazardous treatment plant (Nhan Hoa commune, Tay Hoa District)

1.5.3.2. Sludge Treatment Technology at Tai Tien Ltd. Co.

Sludge from the wastewater treatment system currently contracted with Tai Tien Ltd. Co. and will be treated as below:

The dried and dewatered sludge contains hazardous substances will be mixed with cement, then compressed into blocks to reduce pollution disperse into the environment. As cement has high alkalinity, the heavy metals will kept under hydroxide or carbonate salts.

The compressing often also often include Ca(OH)2 solution (to increase its acidity), or coal slag. Coal slag and Ca(OH)2 can stabilize As, Cd, Cr, Cu, Fe, Pb, Mg, Se, Ag, Zn…The blocks will then be landfilled under required standard inside the treatment plant border, rather than hand it to third party.

The % of mixing based on mass is as below:

Table 8: Mixing Rates

Hazardous Wastes Incineration Slag Cement Lime

Sand Water

100 20 35 10 100 65

30% 6% 10% 3% 30% 19%

With the mixing as above, the hazardous after compressed into blocks will increase weights by 2.75 times, due to 63.6% of the mass from addition.

The diagram for solidifying process can be seen as below:

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Landfilling

Mixing

Incineration slagInorganic Sludge

Additions

Compressing

Test/ sample

Figure 8: Sludge solidifying process

1.5.3.3. Tai Tien landfill site

Tai Tien landfill site is constructed based on design TCXDVN 261:2001 with double layers and 2 trends to collect landfill leachate. The detail layers are as below

+ Compacted original soil;

+ 0.3 m compacted clay layer (filtration coefficiency k¿ 10-7 cm/s);

+ 2 mm HDPE layer;

+ 0.3 m sand filtration layer, (filtration coefficiency k = 0,9);

+ Geotexttile layer;

Area: 156.73 m x 33.24 m x 11 m

Total potential landfill volume: 61,378 m3

Filled duration: 8 years (if the landfilling rate of hazardous solid wastes is 10 tons/ day).

Actual landfilling rate at this point: 380 kg/day or around 10 tons per months

1.5.4. Total investment and Progression pace of the Wastewater Treatment Plant

1.5.4.1. Project total investment

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Table 9: Projecting of the investment

No Items Units Prices(VND)

Costs(VND)

I. Investment before taxes 13,412,388,000 Investment before Tax 12,193,080,000 VAT 10% 1,219,308,000 1 Wastewater Pump

Already constructed during phase 1, have capacity for phase 1& 2

2 Disinfection Tank3 Biological tank4 Sludge Tank5 Laboratory6 Administration Building7 Chemical warehouse8 Equalisation Tank 1 3,987,600,000 3,987,600,0009 Flocculation Tank 1 23,250,000 23,250,000

10 Flotation tank 1 120,900,000 120,900,00011 Primary Clarifier 1 447,330,000 447,330,00012 Grease Trap 1 72,850,000 72,850,00013 Aerobic Tank 2 2,926,600,000 5,853,200,00014 Secondary Clarifier 1 1,687,950,000 1,687,950,000II. Investments in machines and equipments 7,544,863,333

Equipment Investment before tax 6,858,966,667 VAT 10% 685,896,667 A. Equipments 1 Wastewater Pump 2 406,560,000 813,120,000 2 Transition wastewater pump 2 102,666,667 205,333,333 3 Blower for aerating of stabilizer 1 88,150,000 88,150,000 4 Aerating system for stabilizer 1 97,000,000 97,000,000 5 Acid, alkaline storage tanks 2 5,666,667 11,333,333 6 Acid, alkaline injectors 2 23,232,000 46,464,000 7 Mixer for flocculation tank 1 35,200,000 35,200,000 8 Mixer for flotation tank 1 68,400,000 68,400,000

9 Tank to mix chemicals for flocculation 1 5,666,667 5,666,667

10 Mixer to mix chemicals for flocculation 1 35,200,000 35,200,000

11 Injector for flocculation 1 48,400,000 48,400,000

12 Tank to mix chemicals to aid flocculation process 1 22,666,667 22,666,667

13 Mixer to mix chemicals to aid flocculation process 1 35,200,000 35,200,000

14 Injector to aid flocculation process 2 42,592,000 85,184,000

15 Equipment to wipe sludge from 1 281,600,000 281,600,000

40

No Items Units Prices(VND)

Costs(VND)

primary clarifier16 Sludge pump of primary clarifier 1 64,533,333 64,533,333

17 Blower for aerating of aerobic tank 3 179,000,000 537,000,000

18 Aerating system for aerobic tank 1 490,200,000 490,200,000 19 Nutrient mixing tank 1 5,666,667 5,666,667 20 Nutrient mixer 1 35,200,000 35,200,000 21 Nutrient pump 1 23,232,000 23,232,000

22 Equipment to wipe sludge from secondary clarifier 1 354,666,667 354,666,667

23 Cycling sludge pump of secondary clarifier 3 82,133,333 246,400,000

24 Sludge pump for treatment of secondary clarifier 2 67,466,667 134,933,333

B. Pipes, walking platform 33 Pipelines 1 1,066,666,667 1,066,666,667 34 Ladders, walking platform 1 70,000,000 70,000,000 C. Monitoring equipments 35 Automatic pH monitoring 1 55,100,000 55,100,000 36 DO measurer 1 62,700,000 62,700,000

37 Flow rate measurer using ultrasonic waves 1 104,500,000 104,500,000

38 Water level switch 3 5,700,000 17,100,000 D. Electrical system 1 1,336,000,000 1,336,000,000 E. Automatic control system 39 PLC 1 332,500,000 332,500,000

Total 20,957,251,333 Other 2,095,725,133

TOTAL INVESTMENT 23,052,976,467

The above cost does not include costs from administration, technology transferring, and interest rates

1.5.4.2. Current Status of the Wastewater Treatment Plant

June to August 2012: finish legal documents August to December 2012: start the construction January 2013: implement machineries, equipments February 2013: pilot run March- April 2013: technology transfer, take over and transfer

41

CHAPTER 2 CHARACTERISTICS OF THE WASTEWATER RECEIVING

BODY2.1. WASTEWATER RECEIVING BODY

2.1.1. Discharge location

Wastewater after being treated is directed through Lo Ren canal, and then continues flowing into Ma Reng canal and its sub-canals, before being discharged into the upstream section of Thi Vai River (the section along Long Tho commune, Nhon Trach, Dong Nai)

The discharge point of Lo Ren Canal (near Lo Ren Bridge) is coordinated At (VN2000 coordinate system):

+ X: 1.184.745 m.+ Y: 413.438 m.

LOCATION OF WASTEWATER RECEIVING BODY

Open ditch, to collect stormwater Open ditch for treated wastewater from treatment plant andstorm water

The connect point between the above open ditch and closed culvets và nước

Lò Rèn discharge point before being discharged into the environment

42

mưa)

Lo Ren Canal – section under Lo Ren Bridge

Mareng Canal – taken from the middle of canal

THI VAI RIVER

Thi Vai River – the intersection with other streams within the border of Long Tho Commune

Thi Vai River – section running through Long Tho Commune

Figure 9: Pictures of the site

2.1.2. Local Environment Status

2.1.2.1. Geography and Climate

(1). Geography

Based on planning land use for Long tho Commune : 63.51% of the commune is located on top of the alluvial deposit, with an area of

1,541.81 ha 29.10% of the commune is located on top of marine sediment rocks, with an

area of 706.53 ha 43

The basic geography is divided in these 3 categories :

High terrains: toward the West of the Districts, along the 319 road toward Provincial War Memorial. 3 – 80 slope with solid foundation, suitable for planting long-growth plants such as rubber, fruit frees, cashew nut, or constructing industrial zones

Medium terrains: toward the East of Road 19, the transition zone between the hills and mangrove areas, <30 slopes. Suitable for residential areas, garden and rice farming

Is affected by tides, and have weak foundations for construction. Suitable for mangroves or agricultural farming.

In general the terrain slop toward South West, with the highest terrain in North East 50-55m, while the low land in South West, 5-10 m

(2). Climate

The high temperatures around the years are suitable for plant growing and farming

The average annual temperature is 270C, highest at April with 27.30 – 30.7˚C, and lowest at December at 24.80C. Max recorded temperature is 380C while min is 180C. The variety of temperatures during wet season is 5.5 - 80C, and dry season is 5 - 120C.

The humidity around the year is around 78 – 81.4%, with 85 – 93% during rainy season, and 68 - 83% during dry season. Peak humidity at 95% and lowest at 50%

Rainfall is from 1,800 to 2,300 mm annually. Rainfall is not distributed evenly with really high rainfall during August, September, October, some month even reach 500 mm per month. The dry season from November to April only have 10% of the whole year rainfall, with months like February may not even have rain. Due to the geography, the regional agriculture depends almost on rain, with vegetables farming on the hill and 1-2 rice farming seasons a year

Wind direction: have two main wind directions separate by seasons. During rain season, the wind flow toward South West, during dry season, wind flow North East-ward. There are some transition periods where winds blow East or South East. Wind speed is around 2.1-2.5 m/s, and peak at 25 m/s. The region is affected little by storms

The statistics in 5 years below includes: temperatures and humidity (from Bien Hoa station), rainfall (from Long thanh Station)

Average temperature through the year in Dong Nai is in table 6 below.

Table 10: Monthly temperature from 2007 to 2011 – Dong nai province

Unit: 0C

2007 2008 2009 2010 2011

Annual average 26.9 26.7 26.8 27.9 27.5January 25.2 25.8 25.0 26.5 26.1February 26.6 25.0 26.4 27.8 27.0March 28.1 27.2 28.8 28.9 27.6

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April 29.0 28.5 27.5 29.9 28.5May 28.6 27.3 29.0 30.7 28.7June 27.3 29.1 28.4 28.5 28.0July 26.9 27.6 26.0 27.5 27.5

August 26.7 26.7 27.2 27.6 27.9September 26.7 25.7 26.4 27.9 27.5

October 26.3 27.0 27.3 26.9 27.3November 25.9 25.9 26.2 26.7 27.6December 25.0 25.3 24.8 26.6 26.5

Source: Hydrometeorology Division of South East Vietnam

Humidity:Table 11: Monthly humidity from 2007 to 2011 – Dong nai province

Unit: %

2007 2008 2009 2010 2011

Annual average 81 79.8 81.4 78 78January 71 74.5 75 74 75February 68 71.7 80 70 70March 74 71.0 76 69 71April 72 73.1 83 70 73May 84 78.6 79 72 79June 86 83.7 81 81 80July 88 84.7 84 85 83

August 87 85.3 86 83 82September 88 85.9 87 83 86

October 88 86.2 88 85 85November 83 83.5 80 83 81December 78 79.0 78 79 76


Rainfall

Table 12: Average annual rainfall Dong Nai

Unit: mm

2007 2008 2009 2010 2011

Annual rainfall 2,335 2,080 1,993 1,957 2,0179January 13.0 8.1 14.0 26.3 10.2

February 4.7 8.4 5.5 0.0 045

March 70.6 12.5 13.9 13.5 54.2April 59.6 72.9 60.9 8.8 35.5May 280.3 382.3 211.3 128.5 289.5June 270.3 162.1 282.6 165.7 271.5July 366.1 336.9 323.0 338.2 414.5

August 349.0 266.7 297.3 261.2 219.0September 450.0 433.8 352.3 157.3 407.0

October 260.5 211.0 280.0 504.3 250.7November 205.3 160.0 109.0 293.7 201.7December 5.6 25.4 42.9 59.2 25.6


(3). Surface water

Wastewater from Nhon Trach IP – Module 2 will be discharged through Lo Ren Discharge point, into Mareng Canal, before finally being discharged into Thi Vai River. At Rach Mieu Section, the Ma reng flowrate is <2 m3/s during dry season, and <10 m3/s during wet/rain season.

2.1.2.2. River and Open Water Network

Thi Vai River is the wastewater receiving body for all of Nhon Trach 3’s ww. The river has length at 76 km, start from Long Thanh Commune toward Chau thanh, before meet the South China Sea at Rach Gai Bay. Downstream, the river joins with Saigon- Dong Nai at some sections. The average river width is 400 – 650 m, depth at 22 m, with the lowest depth at 60 m

River flowrate mixed with flood is peaked at 3,400 m3/s, with river with tide reverse flow peaked with tide at 2,300 m3/s. River flowrate during wet season is around 350 – 400 m3/s and during dry season is around 200 m3/s. The minimum recorded flowrate is 40 – 50 m3/s. The highest river speed could reach 1.5 m/s. Thi Vai River based on Dong nai Province planned landuse, is for aquaculture farming

Tides: rise at 4-9 am, and 4-11 pm. The tide falls from 9am-4 pm and 11pm-4am. Thi Vai River is heavily affected by tide, and shows sign of being heavily polluted. The project location is 24m above Thi vai River level, hence won’t be affected by tide

2.1.3. Socio-economic Conditions

2.1.3.1. Existing Socio-economic Conditions

According to the report on socio-economic development and public security and defense, year 2011 of Long tho commune, the socio-economic conditions are summarized as follows:

46

(1). Agriculture

Total cultivation land area was 270 ha, including:

+ Rice land: 95/90 ha, equally to 1065 of the planned target. The yield is 3.5 tons to 4.5 tons per ha. Various anti-pesticide rice species were introduced, including OM4900, OM6162, MTL 110, and Bac Thom…+ Vegetable land: 155/150 ha, equally to 103% of the planned target due to expansion of vegetable land along Cau Mit canal. The productivity is 30 tons to 40 tons, generating stable income of 25 to 35 million VND per ha, minus the investment cost. + Cassava: reduces to 20 ha comparing to 30 ha planned, equally to 67%, mainly on the planned land of committed projects.

Agricultural promotion: VNd 80 million was invested to develop 2,000 m2

vegetable land but the efficiency is not high due to lack of in-glass door vegetable nurturing experience. The Economy Department is introducing a new model. 7 excellent farmers are trained on vegetable cultivation at the provincial agricultural promotion center. Training course was hold at cooperative teams, attracting 30 trainees.

Husbandry: The livestock herd is reducing due to narrowing glass land. There were 480 cow heads, reducing 50 heads comparing to that of 2010. The buffalo drove had 50 heads while the pig flock has 1,570 heads. The chicken and duck herd has 1,500 heads at household-scale.

Aquaculture: 45 ha intensive shrimp rearing land was closed due to epidemic disease of 45-year young shrimp.

(2). Trade and Service

So far, the commune has 296 business households in food processing, trading, food supply, accommodation services, internet service, increasing 24 households comparing to that of previous year. 161 households registered to tax department, increasing 71 households comparing to that of previous year. The accommodation leasing household number increases 22 households, increasing to 104 households with 1,346 rooms.

Businesses households at Long tho market were registered but the business is not stable. 161 households registered at the tax office, increasing 71 households comparing to that of previous year. 89 households were classified as low-income ones.

(3). Education and Training

School Year 2011 – 2012: 63 kindergarteners; and 412 preschoolers.

Total student number is 556 students comparing to the target of 520 students, increasing 7%. Teaching methodology and vocational training are strengthened. The educational environment is improved to raise the teaching quality.

2.1.3.2. Economic Development Plan of the Wastewater Receiving Zone

47

Nhon Trach District Socio-economic Development Plan in 2006-2020 sets the socio-economic and environment development targets as follows:

2006-2010 Period: the average economic growth rate target is 16.4% per year, of which, the growth rate of industry, agriculture and service sectors are 17-17.5%, 4% and 24-25%, respectively. Those of 2011-2015 period are 15.5%, 15-15.5%, 3%, and 20-21%. 2016-2020 period targets are 14.5%, 13-13.5%, 1.5% and 18-19%, respectively.

Natural population growth rate shall be controlled at less than 1.1% by 2010 and shall be maintained in the period up to 2020.

Poverty household rate shall be reduced to fewer than 2% by 2010 and basically cleared in 2011-2015 period.

High secondary school universalize shall be completed in 2010.

Increase vocational training labor ratio to 30%, 60% and 80% by 2010, 2015 and 2020, respectively.

Urban unemployment ratio shall be controlled at fewer than 3% in the period to 2020.

Under-5-year old malnutrition ratio shall be reduced to 13%, 8% and 3% by 2010, 2015 and 2020, respectively.

Power supply coverage shall be increased to 95% by 2010 and 100% in 2011-2015 period. .

Clean water accessing ratio shall grow up to 95% in 2010 and 100% in 2011-2015 period.

Forest and greenery tree coverage shall be expanded to 25%, 29% and 32% in 2010, 2015 and 2020 respectively.

Collected non-hazardous industrial solid waste, and urban waste shall be 75% by 2010 and 100% in 2011-2015 period. Over 85% hazardous waste shall be collected and treated properly by 2010 and expanded to 100% in 2011-2015 period.

Water environment pollution prevention: the centralized wastewater treatment system shall be developed at 100%W industrial parks by 2010; 70% urban wastewater is collected to the centralized treatment system in 2010-2015 period and this number will increase to 100% in 2016-2020.

Decision No. 284/2006/QD-TTg dated December 21, 2006 of the Prime Minister approved the adjustment of Nhon Trach new town construction plan to 2020 sets Nhon Trach district development orientations as follows:

To be one of industrial, trade-service, tourism, education and training and science and technology centers of Dong Nai province as well as Southern Focal Economic Zone, meeting urban category II standard;

To be a key transport hub of the southern focal economic zone;

Play a significant role in public security and defense of the southern focal economic zone .Population:

48

Forecast by 2010: 265,000 people, of which, urban population is 150,000 people;

Forecast by 2020: 600,000 people, of which, urban population is 450,000 people.

Construction Land Availability

By 2010: the urban construction land will cover 10,000 ha, of which, the civil land will be 4,200 ha or 160 m2/capita;

By 2020: the urban construction land will be expanded to 22,700 ha, of which, the civil land will be 9,200 ha or 155 m2/capita.

* Urban Spatial and Architecture Development Directions:

Urban Development Direction: the urban development is promoted in the zone surrounded by Road 25° and District 19, Dong Nai and Long Tau riverside zones connecting to District 2 and District 9 of Ho Chi Minh City, specifically as follows:

Existing District Urban Center: develop compact urban centers, urban center, trade and service centers;

Northwest side along Dong Nai River: develop urban and tourism center, university center;

Southwest side: develop urban centers, rural residential centers, port and port-integrated industries along Long Tau River;

Eastern side: develop industrial parks and rural residential centers;

Southern and southeast side along Dong Tranh River, Thi Vai River adjoining to Can Gio district (Ho Chi Minh City) and Phu My new town (Ba Ria – Vung Tau): the submerged forest preserve zone.

Technical Infrastructure Development Orientations:

a) Transport

Primary Indicators:+ Transport land: 2,430 ha, including 1,030 ha urban transport land. + Urban transport land ratio: 11.2%, of which, traffic facilities land shares 1.7%. + Primary urban road density: 2.5 - 3 km/km2;+ Urban transport land per capita: 22.8 m2/capita.

b) Sewage and Environmental Sanitation:

Indicators: the domestic wastewater volume is equally to 80% of supplied water; the industrial wastewater is 40 m3/ha;

Domestic wastewater:+ Total domestic wastewater volume will grow up to 80,000 m3/day by 2020;+ Total industrial wastewater volume will be 144,000 m3/day;+ Central center: to collect wastewater to a treatment facility at Phuoc An commune with capacity of 65,000 m3/day; the treated wastewater is discharged to Bau Bong stream, flowing to Ba Hao River.

49

+ Long Tho commune, Dong Mua Rua zone: the wastewater is transferred to a pumping station with capacity of 5,000 m3/day near the ring road to pump the water to the treatment facility Number 1;+ Long Tan and Phu Hoi communes: the wastewater is collected to the second wastewater treatment facility at Dong Nai River spanning bridge foundation with capacity of 5,000 m3/day;+ Hiep Phuoc commune: the wastewater is collected to the third treatment facility at northern urban residential center with capacity of 5,000 m3/day; the treated wastewater is discharged to Ba Ky canal;+ Dai Phuoc commune and a part of Vinh thanh commune adjoining to Ong Keo canal: the wastewater is collected to the fourth treatment facility near Cau Trai River with capacity of 4,000 m3/day;+ Other basins besides Ong Keo canal in Phu Huu commune and Phuoc Khanh commune, and the zone outside Dong Mon River in Phuoc Thien commune: local treatment.

Industrial wastewater:+ Industrial wastewater of plants and industries inner the urban area shall be processed meeting the limit B prior discharge to the urban sewage system. The centralized treatment system shall be developed at industrial parks. The wastewater shall be treated at the discharge source prior transferring to the centralized treatment system. The wastewater shall be treated at the centralized system meeting limit A to discharge into the environment;+ Hospital waste shall be treated and pasteurized to discharge into the urban sewage system.

Urban Sanitation:+ Domestic Solid Waste: A domestic solid waste disposal site, covering 10 ha shall be developed in short-term at Dong Mu Rua zone, Phuoc An commune, outside inner ring road. A provincial landfill is planned at Bau can commune, Long Thanh district, covering 100 ha. Hazardous solid waste shall be collected to Giang Dien landfill. + Cemetery: In the short term, a cemetery in Long Tho commune, covering 20 ha could meet the current cemetery requirement. In the future, the cemetery shall be developed far from the urban center 20 - 30 km;

Environment and Water Landscape Preservation: To control the domestic and industrial wastewater strictly

To grow tree and protect greenery buffer zones along the river and canals, forming open space for new towns

To control ecotourism development along rivers and on islands.

Initial Construction Development Plan and Prioritized Projects: To develop technical infrastructure of Nhon Trach industrial park which is 2,700 ha area

To develop urban housing and public utilities

To develop specific centers: education, sport, healthcare and trading centers

50

To develop tourism centers, parks, especially along Dong Nai, Dong Mon, Nha Be and Cai Rivers.

51

2.1.4. Description Of All Discharge Sources With Same Final Discharge Receiving Body

The discharge sources is listed below in order by its location along the discharge network: upper Lo Ren Canal, lower Lo Ren Canal (downstream of project discharge point), and then the section along Thi Vai River (near Long Tho Commune).

Table 13: List of all wastewater discharge sources from Nhon Trach 3 IP

No Wastewater Source Discharge rate (m3/day) Discharge point Receive body

I Industrial sources 20,500

1 Formosa Limited Liability Company 5,000 Lo Ren

Mareng and Lo Ren Canals

2 Nhon Trach 2 IP 12,000 Upstream of Rach Mieu

Rach Mieu

3 Nhon Trach 1 IP 3,500

Upper stream of Thi Vai before joined by Ma Reng Canal, and 100m downstream of discharge point

Thi vai River(upper stream along Long Tho Commune)

II Agricultural sources

7,043,760 – 9,391,680

m3/farming season

1

Wastewater from shrimp farming in Long Thanh and Nhon Trach District

9,000 – 12,000 m3/ha

Thi vai River Thi vai River

III Domestic 1,467 – 1,956

1

Domestic wastewater from Long tho Commune, Nhon Trach District

536 – 715 Lo Ren

Mareng and Lo Ren Canals

2

Domestic wastewater from Hiep Phuoc

District, after mixing with surface water of

Rach Mieu, Ba Ky and Ma Reng Canals

930 – 1,240

Upper stream of Thi Vai before joined by Ma Reng Canal, and 100m downstream of discharge point.

Thi vai River(upper stream along Long Tho Commune)

2.1.4.1. Industrial Sources

52

Wastewater after treatment of Nhon Trach 3 IP is directed into Lo Ren Canal, then mixed with wastewater from Formosa section of Industrial Park and the Long Tho Commune (Hiep Phuoc). This continues to flow southeast down the slope across terrain, receiving wastewater from residential areas along the canal, before running through Ma Reng Canals and finally being discharged into upper Thi Vai.

2.1.4.2. Agricultural Sources

In addition to industrial wastewater, the regional agricultural activities also contribute significant amounts of discharges into the Thi Vai River. Currently the main agriculture activities here are quite diverse: fishing, animal livestock, horticulture…. But the majority of wastewater is still generated by aquaculture activities (farming black tiger shrimp, white shrimp, and other types of fishes). The farming areas are distributed across Long Phuoc, Phuoc Thai Communes (Long Thanh - Dong Nai), Long Tho and Phuoc An Communes (Nhon Trach - Dong Nai) and My Xuan commune, Phu My town (Tan Thanh, Ba Ria - Vung Tau). This type of wastewater from shrimp farming arises mainly after the shrimps were harvested. As the farmers live on both sides of river banks often works in small scale/ household business (about 1-2 ha in farming area), they simply can’t afford an appropriate treatment system for these wastewater. The wastewater from shrimp farming, include ponds water with food scraps, wastes, and used biotic; is currently being discharged directly into the Thi Vai River without treatment.

According to survey data of Le Van Thu - Project "Investigation and proposing solutions for the development and protection of mangrove ecosystems in Long Thanh -Nhon Trach" in 2005; the mangroves areas in two districts of Long Thanh and Nhon Trach, have a total area of shrimp farming is 782.64 ha. This generate an amount of wastewater approximate 9000-12000 m3/ha. In another words, the total volume of wastewater from aquaculture activities discharged into Thi Vai river is estimated at 7,043,760 to 9,391,680 m3/farming season (or 58,698 to 93,917 m3/day due to a 100-120 days/farming season). However, most of these wastewater is discharged only after being harvested (after around 3-4 months) so there is always a concentrated amount of discharge by the end of this period rather than distributed evenly into daily.

2.1.4.3. Domestic Uses Sources

In addition to the industrial and agricultural wastewater, the wastewater from nearby residential areas also should be mentioned. The demographic of those residential areas: Long Phuoc and Phuoc Thai Communes (Long Thanh - Dong Nai Districts ), Hiep Phuoc, Long Tho and Phuoc An Communes (Nhon Trach -Dong Nai Districts), in addition to Xuan My Commune and Phu My town (Tan Thanh district, Ba Ria-Vung Tau District) are as follows.

Table 14: The demographic of nearby residential areas to Thi Vai river

53

No Residential Area Population

1Long Thanh District – Dong Nai Province

Long Phuoc Commune 10,402

2 Phuoc Thai Commune 13,105

3

Nhon Trach District – Dong Nai Province

Hiep Phuoc Commune 10,338

4 Long Tho Commune 5,959

5 Phuoc An Commune 6,547

6 Tan Thanh District, Ba Ria- Vung Tau province

My Xuan Commune 12,383

7 Phu My Town 8,797

Total 67,531

Standard wastewater discharge per capital of households with sewer system, but without bathroom is ranged from 90-120 liters/capital/day (Nguyen Trung Viet, 2005). If apply that to the residents along Thi Vai River with a population of 67,531 residents, the daily discharged wastewater can be estimated at 6078-8104 m3.

However, at present, these residential areas still either does not connect to public sewer systems, or connect to an incomplete system. This means the majority of these domestic wastewaters are still left to run-off and eventually infiltrate into the grounds. That’s why the amount of discharged wastewater directly into Thi Vai River can be considered negligible.

2.1.5. Nearby Water Supply Intake (within 3 km downstream)

The water quality of nearby open water source is much lower than the requirement for water supply source (mostly due to salinity) . Therefore the main use of them is for river transportation and aquaculture.

Along the Mareng and Lo ren, there is no water supply intake structure. Only the residents lives near the meet between Mareng and Thi vai working in fishing, and no river water was used for farming .

3km downstream of Thi Vai (from Mareng discharge point), there’s also no river water intake sites, even for industrial or aquaculture purposes.

2.2. CURRENT ENVIRONMENT STATUS

54

The environmental statistics of Nhon Trach 3 IP for Phase 2 was monitored by Tin Nghia Company every 6 months. The results of 12/2011 can be summarized as below.

2.2.1. Atmosphere Status

2.2.1.1. Location of samples

Table 15: Location of atmosphere quality testing is as below

No Samples Location1 K1 In front of DerFul Co Limited2 K2 In front of Sinpoong Vina Company3 K3 Near Velco Company4 K4 Near Viet Long Company5 K5 Near Bueno Co Limited6 K6 Near Kirby SEA company7 K7 Near CSB battery Vietnam Company

2.2.1.2. Sampling and analyzing methods

Table 16: Sampling and analyzing methods

No Parameters Sampling methods1 Noise TCVN 5964 : 19992 NO2 TCVN 6137 : 20093 SO2 TCVN 5971 : 19954 CO 52 TCN 352 - 895 Suspended dusts (*) TCVN 5067 : 19956 THC TCVN 7558-1:20057 Formaldehyde General method

Note:(*): parameter accepted by Vilas

2.2.1.3. Results

Table 17: Results of Nhon Trach 3 – Phase 2 air quality

SamplesNoise

s Dusts NOx SO2 CO HC HCHO

dBA mg/m3

K1 58.5 152.6 17.4 13.2 2461 UD UDK2 59.1 110.0 18.4 12.6 2280 UD UDK3 58.3 120.4 20.8 16.0 2931 UD 0.96K4 59.5 120.5 18.4 16.8 1628 UD UDK5 63.1 146.4 12.8 12.2 1791 UD UDK6 59.1 112.0 20.2 16.5 2605 UD UDK7 54.7 155.2 21.1 18.7 2280 UD 1,3

QCVN 70 300 200 350 30,000 5,000 20

55

05:2009/BTNMT (*) (**) (**)

Source: Environment Technology and management Centre, 11/2011.

Notes UD: undetected

QCVN 05:2009/BTNMT: Air quality, surrounding air quality

(*) QCVN 26:2010/BTNMT: National regulation on noises

(**) QCVN 06:2009/BTNMT: National regulation on hazardous air emission in surrounding air

CommentsThe analysed results showed all parameters met QCVN 05:2009/BTNMT, QCVN 26:2010/BTNMT, and QCVN 06:2009/BTNMT

2.2.2. Water Quality Status

Results of the sampling of water supply sources can be presented in table 17 below:

Table 18: Tap Water quality

No Parameters Units Sampling Methods Results QCVN 01:2009/BYT

1 pH - TCVN 6492:1999 7.24 6.5 – 8.5

2 Colour Pt Photometry 0.00 ≤15.0

3 Odour - SmellingNo

offensive smell

No offensive smell

4 Turbidity NTU Photometry 0.07 ≤2.0

5 Hardness mg/l SMEWW – 2340 C 58.0 ≤300

6 Chloride (Cl-) mg/l SMWW4500 – Cl- B 2.50 ≤250

7 Permanganate mg/l TCVN 1686 : 1996 Can’t be Detected ≤2.0

8 Sulfate mg/l US – EPA 1997 – 375,4

12.47 ≤250

9 Iron mg/l SMEWW 3500Fe B 0.02 ≤0.3

10 Manganese mg/l AAS 0.02 ≤0.3

11 Nitrite (NO2-) mg/l TCVN 1678:1996 0.009 ≤3.0

12 Nitrate (NO3-) mg/l TCVN 1680:1996 2.03 ≤50

13 Chloride residue mg/l RC Mater 0.33 0.3 -0.5

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No Parameters Units Sampling Methods Results QCVN 01:2009/BYT

14 Total Coliforms /100ml CFU ISO 9308 – 2: 2000 (E)

0/100ml 0

15 E. coli/100ml CFU ISO 9308 – 2: 2000 (E)

0/100ml 0

16 As (*) mg/l TCVN 4571 - 1988Can’t be Detected

(<35x10-4)0.01

17 Cd (*) mg/l TCVN 6197 - 1996Can’t be Detected

(<35x10-4)0.003

18 Pb (*) mg/l TCVN 4573 - 1988Can’t be Detected

(<35x10-4)0.01

19 Hg (*) mg/l TCVN 5991 - 1988Can’t be Detected

(<35x10-4)0.001

20 Ammonia (*) mg/l SMEWW 4500–Norg B

KPH(<35x10-4) 3

(Source: Dong Nai Department of Health, 08/2011)

Note (*) From Center of environmental and labour health in 11/2011.

QCVN 01:2009/BYT – National regulation on portable water

Comments

The results showed that water supply sources in Nhon Trach 3 IP met all of the required regulation in QCVN 01:2009/BYT.

2.2.2.1. Surface Water Quality

(1). Sampling locations

Table 19: Locations of Surface water Sample

No Sample Location1 NM1 Mareng Canal

2 NM2 On Thi Vai River, 500m upstream from the join with Mareng canal during high tide

3 NM3 On Thi Vai River, 500m upstream from the join with Mareng canal during low tide

4 NM4 On Thi Vai River, 500m downstream from the join with Mareng canal during high tide

57

5 NM5 On Thi Vai River, 500m downstream from the join with Mareng canal during low tide

- The sample is taken 20 cm below the surface specialized scoops

(2). Sampling and analyzing method

The sampling method for surface water in Ma Reng Canal, Thi vai River is presented in below table:

Table 20: The sampling method for surface water

No Parameters Methods1 pH TCVN 6492: 19992 DO Hanna 9142 Equipment3 BOD5 SMEWW 5210 B4 COD SMEWW 5220 C5 TSS SMEWW 2540 D6 As ASTM D 2972-087 Hg ASTM D 3223-028 Pb Hach - 80339 Cd Hach - 801710 TN TCVN 6638:200011 TP Hach – 819012 Oil and Greases SMEWW 5520 B

58

Table 21: Surface water quality

No Parameters Units NM1 NM2 NM3 NM4 NM5 QCVN 08:2008,

Column B11 pH - 6.8 6.7 6.8 6.8 6.8 5.5 - 92 DO (*) mg /l 4.1 6.1 6 5.8 5.6 >43 BOD5 mg /l 6 3 4 3 4 154 COD mg /l 35 25 28 28 32 305 TSS mg /l 30 22 25 26 27 506 As (**) mg /l 0.044 0.115 0.052 0.028 0.032 0.05

7 Hg (**) mg /l Undetected (LOD=0.0003)

Undetected (LOD=0.0003)


Undetected (LOD=0.0003

)

Undetected (LOD=0.0003) 0.001

8 Pb mg /l Undetected (LOD=0.01)





9 Cd mg /l Undetected (LOD=0.005)





10 TN (*) mg /l Undetected Undetected Undetected Undetected Undetected 0.5

11 TP mg /l 0.2 0.16 0.2 0.1 0.13 0.3

12 Oil and Greases (*) mg /l Undetected Undetected Undetected Undetected Undetected 0.1

(*) : Parameters not yet certified by Vilas.(**): by ENTEC; LOD: limit of Detection

59

Note Samples from Sonadezi Company collect and analyse in 5/2012

QCVN 08:2008/BTNMT – National regulation on surface water, column B1: Use for irrigation and industrial uses.

CommentsCompare the sampling results against QCVN 08:2008/BTNMT, Column B1 showed:

COD of 2 samples NM1, NM5 over the regulation from 1.17 times;

TSS, BOD5 and other parameters of all 5 samples meet the regulation

2.2.2.2. Underground water quality

Currently there’s no underground water intake structure within Nhon Trach 3 IP, so the up to date statistics will be updated in the next EIA report. Below is the underground water quality taken in April 2006

Table 22: Underground water quality of Nhon Trach 3 IP (Sampling date: 17/04/2006).

Parameters Units N1 N2 N3 N4 QCVN 09:2008

pH - 4.93 5.70 5.1 4.86 5.5–8.5TDS mg/l 36 29 37 29 1,500Hardness mg/l 20.8 18.2 21.2 19.3 500Chloride mg/l 28.2 26.8 27.4 25.8 250Fluoride mg/l UD UD UD UD 1.0N-NO3

- mg/l 4.2 3.8 3.9 4.1 15Total Fe mg/l 0.04 0,04 0.05 0.04 5Mn mg/l UD UD UD UD 0.5Sulfate mg/l 2.84 2.65 2.55 2.78 400Lead mg/l UD UD UD UD 0.01Hg mg/l UD UD UD UD 0.001Zinc mg/l UD UD UD UD 3,0Oils and greases mg/l UD UD UD UD -Pesticide chemicals mg/l UD UD UD UD -E.Coli MPN/100ml 3 2 3 2 UDColiform MPN/100ml 12 10 12 10 3Source: Nhon Trach 3 – Module 2 ‘s EIA report 2006

Notes :

QCVN 09:2008/BTNMT: National regulations about underground water quality;

UD : Undetected

S1-6 Environmental Consultant Team 60

" – ": Not regulated

Sampling locations:

N1: Samples from Mr. Tong’s farm.

N2: Samples from Nhon Trach water supply plant.

N3: Samples from wells of Lo Ren residential area.

N4: Samples from well in 319B road.

Comments:. Compare the result with QCVN 09:2008/BTNMT showed that the underground water quality onsite have high E. Coli and Coliform (2-4 times higher than regulation) while all of the well samples have lower pH than the regulation (due to alum or salinity)

2.2.3. Soil Status

The soil status within the project site can be presented in table below

Table 23: Soil quality in Nhon Trach 3 IP – Phase 2

No Parameters Unit Results QCVN

03:2008/BTNMTD1 D2 D3 D41 As mg/

Kg 2.27 3.98 3.19 5.37 12

2 Cd mg/Kg

UD (<0.2) 1.23 0.87 UD

(<0.2) 10

3 Cu mg/Kg 8.15 8.59 7.74 5.12 100

4 Pb mg/Kg 21.72 20.2

224.7

1 23.71 300

5 Zn mg/Kg 25.71 30.9

523.9

6 34.7 300

Source: Tin Nghia

Note:

D1: 100 m from head of project site;

D2: Next to the surrounding walls of Y.S.P Company;

D3: End of the project site, 100 m away from road 8;

D4: Project site toward N2 Road.

UD: undetected

Based on the results comparing to the national regulations on heavy metals in soils, we can see that the soils here are not polluted


2.2.4. Surrounding Deposit Status

2.2.4.1. Sludge quality from treatment plant

Sludge sample from B10 tank of the CETP was analysed by Hai Dang Company in 1/2011. He results are presented as below:

Table 24: Results of the sludge sampling

No Parameters Units Sampling method Results QCVN 07:2009/BTNMT

1 pH - TCVN 5979 – 2007 6.50 -2 As mg/kg TK TCVN 6496 – 2009 4.12 2.03 Cd mg/kg TCVN 6496 – 2009 0.40 0.54 Ni mg/kg TCVN 6496 – 2009 0.25 705 Pb mg/kg TCVN 6496 – 2009 2139.9 156 Hg mg/kg TK TCVN 6496 – 2009 0.61 0.27 Cr mg/kg TCVN 6496 – 2009 101.59 5.08 Zn mg/kg TCVN 6496 – 2009 522.04 2509 CN- mg/kg TK TCVN 6181 – 1996 <0.05 -

10 Phenol µg/kg KTSK 21 – GC/MS 1.71 1,000Sources: Sludge sample from Hai Dang Company, under no 11010211/KQ in 7th Jan 2011

Notes :

QCVN 07:2009/BTNMT: national regulation on hazardous wastes

Comments:

The analysed results against Regulation QCVN 07:2009/BTNMT showed heavy metal parameters such as As, Pb, Cr and Zn are all over the regulation. This mean, the sludge from Nhon Trach IP treatment plant will be classified as hazardous waste.

2.2.4.2. Thi Vai River bed sediments

The sampling results of the sediments/ sludge from Thi Vai riverbed can be presented in below table:

Table 25: The sampling results of the sediments underneath Thi Vai river


No Parameters Units Methods Results QCVN 03:2008/BTNMT

1 Asen (As) ppm MOSA 23- 3 As 18.7 122 Cadimi (Cd) ppm TCVN 6496 - 2009 1.64 23 Mercury (Hg) ppm MOSA 23- 3 Hg 0.02 -4 Lead (Pb) ppm TCVN 6496 - 2009 12.73 705 Total oil and

greases ppm TCVN 7369 - 2004 105 -

Note Samples from Environmental Technology Advising & Labour Health and Safety Center 11/2011.

QCVN 03:2008/BTNMT – National regulation on heavy metal in soils

“-”: Not regulated

Comments

Due to the lack of national regulation on river sediments, the project used QCVN 03:2008/BTNMT – national regulation on heavy metal in soils instead. The results showed mostly meet the standard, except the level of As is 1.6 times higher than the required standard.

2.2.5. Ecological Environment

2.2.5.1. Flora

(1). Long Thanh – Nhon Trach Mangrove Forest

Long Thanh – Nhon Trach mangrove forest is distributed along two banks of Thi Vai River where there are lots of habitat of typical floral species of the mangrove forest, playing significant role in maintaining eco-balance in the area. There are total 261 floral species of 61 families and 184 branches. They belong to Magnolyophyta, Magnolyopsida and Liliopsida.

Long Thanh – Nhon Trach mangrove forest is in the submerged land of the province, contributing to stabilize deposited alluvium, forming a protective wall, preventing river mouth erosion which is caused by tidal and other activities. The mangrove forest plays significant roles in maintaining the eco-balance, including alluvium transporting and movement of plankton, balancing fish and shrimp larva resources. The mangrove forest is managed by Long Thanh Farm, covering the area of 4 communes: Phuoc An, Long Tho (Nhon Trach district) and Phuoc Thai, Long Phuoc (Long Thanh district). The inland waterway transport system is densely in the forest area, favorable to transport and ecotourism development. It is estimated that the total natural area of Long Thanh – Nhon Trach mangrove forest is 7,952.67ha, comprising:


7,060 ha in Nhon Trach district (4,036 ha with forest trees and 3,024 ha without forest trees).

1,467 ha in Long Thanh district.

(a). Plant Plankton

The salinity-polluted zone is affected by industrial wastes. Number of species in this zone is less diversified, comprising 29 species where Bacillariophyta is dominated with 17 species or 58.6% of 10 families; following by Chlorophyta with 6 species or 20.7%, belonging to 6 families; Cyanophyta with 4 species (13.8%) of 4 families; Chrysophyta with one species (3.4%); and Euglenophycota with 1 species (3.4%). The average density is 19,000 to 45,000 individuals per 1 litter.

(b). Zoo Plankton and Zoo Benthos

In the salinity polluted zones which are affected by industrial wastes, Copepoda species are dominated with 11 species, 20 initials per liter; following by Rotifer – 2 species, 8 individuals per liter, Protozoa – 5 species, 7individuals per liter, Cladocera – 11 species – 3 individuals per liter and larva – 38 individuals per liter.

(c). Crustacean

19 valuable shrimp species are identified, especially Penaeus indicus, Metapenaeus ensis; Metapenaeus lyssianassa Metapenaeus spinulatus is an important species in intensive rearing ponds in Long thanh and Nhon Trach. Scylla serrata crab is also exploited in mangrove forest. Regarding Penaeud monodon, the rearing has been developed rapidly.

(d). Mollusk

There are some mollusk species in Thi Vai River which are exploited to nurture duck and fish. They shall be further studied to maintain these valuable natural resources.

(2). Terrestrial Ecosystem

The local terrestrial ecosystem is characterized as follows:

(a). Species

Characteristics of species in Thi Vai River are shown in Table 20.

(b). Species Coverage

139 species have small coverage, sharing 53%, distributed in incident-occurred zones or used to be densely community.


86 species have average coverage, sharing 33% which are mixed groups in the community, having characteristics of dominated species.

37 species have high coverage, sharing 14%, which are dominated species in riverside forest, of which, Rhizophora apiculata is dominated.

(c). Value

13 salt-water species distributed along canals, river banks in tidal inundation zones. Salt water species trees are planted or wild trees in fertilizer land along the river;

123 valuable tree species: green coverage, erosion-prevention, organic fertilizer, etc.

86 species used as medical herbs; 6 vegetable species

34 species as bonsai tree

62 wooden tree species

44 fruit tree species.

2.2.5.2. Aquatic Ecosystem (Zoo and Plant Plankton, Zoo Benthos)

(1). Zoo Plankton

The survey results of past years show that there are replacement of various species such as substitution of Cartia clausi, Paracalanus parvus and shrimp larva by Oithona plumifera and nauplius.

(2). Plant Plankton

The survey results show there are structure variations of individuals by dominant species. When the plants were not developed in Nhon Trach III IP, algae species are dominated, including Chaetoceros, Pseudocurvicetus, C. Spinosus, Skeletonema costatum, Ditylum sol and Coscinodiscus jonessiacus. When the plants are operating, silica algae species are dominated, including Chaetoceros abnormis, Nitzchia longissima, and especially Lepto-cylindiscus danicus.

(3). Zoo Benthos

The river bed covers with gravel and stiff clay. Main zoo benthos species are Anthozoa, Spongia, Holothurian. There are Sedentaria or Terebellidesstroemi Sars, Sabllearia cenentarium Moore, Sternaspis sactata (Rosami) along the river bank.


CHAPTER 3 ALTERNATIVE SOLUTION

3.1. STANDARDS OF ALTERNATIVE SOLUTION

- Any of the alternative solutions still have to meet the national regulation QCVN 40:2011/BTNMT.

- The discharge point have to ensure the discharge need, while avoid the negative impacts toward the environments and the local public.

- Sludge from the treatment system has to be treated as hazardous wastes, and avoid impacts toward the environment.

3.2. DISCHARGE POINT LOCATION

Wastewater from Nhon Trach 3 IP – Module 2 will use the existing (Module 1) discharge network. Therefore the location of Module 2 discharge 2 will be unchanged

3.3. WASTEWATER TREATMENT TECHNOLOGY

Treatment efficiency of the treatment plant (Module 1) is very effective. The results from eelier treatment can be seen in Table 26 and 27 as below, while the up-to-date results 05/ 2012) were already presented in table 4:

Table 26:The characteristics of the IP centralized wastewater treatment (Phase 2 - Module 1), September 2011

No Parameters Unit

WW characteristics 9/2011 QCVN 40:2011/BTNMT Column B with Kq=1.1;Kf=1.0

Pre-treatment After Treatment

1 pH - 6.2 7.2 5.5 - 9.0

2 COD mg O2/L 760 Undetected (LOD=10) 165

3 BOD5 mg O2/L 330 9 554 TSS mg/L 148 48 1105 Colour Pt-Co 42 13 165

6 N-NH4+ mg/L 25.8 Undetected

(LOD=0.056) 11

7 TN mg/L 27.3 4.8 448 TP mg/L 9.4 1.72 6.6

9 CN- mg/L 0.013 Undetected (LOD=0.005) 0.11

10 Cr6+ mg/L Undetected (LOD=0.01)



11 Cr3+ mg/L Undetected (LOD=0.025)


12 Fe mg/L 1.37 Undetected (LOD=0.06) 5.5

13 Zn mg/L 0.19 0.21 3.3

14 Cu mg/L Undetected (LOD=0.1) 0.18 2.2

15 As mg/L Undetected (LOD=0.001)


16 Hg mg/L Undetected (LOD=0.001) 0.003 0.011

17 Pb mg/L 0.036 Undetected (LOD=0.001) 0.55

18 Cd mg/L Undetected (LOD=0.005)


19 Ni mg/L Undetected (LOD=0.06)


20 Inorganic oils mg/L 12.6 Undetected (LOD=3) 11

21 Organic Oils mg/L 7.26 Undetected -22 S2- mg/L 2.83 Undetected 0.55

23 Cl2 mg/L Undetected (LOD=0.1) 1.85 2.2

24Phosphorus based Pesticides

µg/L 0.0073 Undetected (LOD=0.001) 1.1

25Chloride based Pesticides

µg/L Undetected (LDO=0.0005)


26 Phenol µg/L 0.08 Undetected (LOD=0.01) 0.55

27 Coliforms MPN/ 100mL 3.5x106 < 1.8 5500

Source: Environmental monitoring report of Nhon Trach 3 IP, Phase 2, 2011

Table 27: The characteristics of the IP centralized wastewater treatment (Phase 2 -Module 1), fourth quarter, November 2011

No Parameters Unit

WW characteristics 9/2011 QCVN 40:2011/BTNMT Column B with Kq=1.1;Kf=1.0

Pre-treatment After Treatment

1 pH - 6.69 8,47 5.5 - 9.02 COD Pt-Co 278 13 1653 BOD5 mg/L 192 18 55


4 TSS Mg/L 104 39 1105 Colour mg/L 55 25 1656 N-NH4

+ mg/L 34.2 Undetected (<0.5) 11

7 TN mg/L 46.2 18.1 448 TP mg/L 8.18 1.58 6.69 CN- mg/L Undetected

(<0.005)Undetected

(<0.005) 0.11

10 Cr6+ mg/L Undetected (<0.01)

Undetected (<0.01) 0.11

11 Cr3+ mg/L 0.024 0.009 1.112 Fe mg/L 2.199 0.017 5.513 Zn mg/L 0.081 0.619 3.314 Cu mg/L 0.098 0.011 2.215 As mg/L 0.017 0.076 2.2

16 Hg mg/L Undetected (<0.004)


17 Pb mg/L 0.167 Undetected (<0.004) 0.55

18 Cd mg/L Undetected (<0.0002) 0.026 0.11

19 Ni mg/L Undetected (<0.001)


20 Inorganic oils mg/L 1.7 Undetected (<0.01) 11

21 Organic Oils mg/L 3.3 Undetected (<0.01) -

22 S2- mg/L 2.0 Undetected (<0.1) 0.55

23 Cl2 mg/L - Undetected (<0.1) 2.2

24Phosphorus based Pesticides

mg/L Undetected (<0.1)


25Chloride based Pesticides

mg/L Undetected (<0.1)

Undetected (0.1) 0.11

26 Phenol mg/L 0.052 Undetected (<0.005) 0.55

27 Coliforms MPN/ 100mL 43x103 Undetected

(<3) 5500

Source: Environmental monitoring report of Nhon Trach 3 IP, Phase 2, 2011

Notes: 9/2011 samples were collected and analysed by SONADEZI


11/2011 samples were collected and analysed by Environmental Technology and management Centre

QCVN 40:2011/BTNMT – National regulation on industrial ww, Column B, with Kq=1.1 (Thi Vai flowrate > 200 m3/s) and Kf=1.0 (discharge rate ≤2,000m3/day). Wastewater monitoring results showed all parameters of the effluents meeting the Vietnam national standard

After considering the positive results from Module 1 of Nhon Trach 3 IP, Phase 2’s centralized ww treatment plant. The project owners have decided to continue with the same technology for Module 2. The diagram for Module 2 CETP is presented in Figure 5 as below (as see, is connected straight into Module 1). More detail of Module 2 was also presented in Section 1.5.2.2.


EQUALISER B02

SCREENING

EQUALISOR TANK

PRIMARY TREATMENT TANK

GREASE TRAP

AERATION TANK

CLARIFIER

Module 2

SLUDGE-TANK B10

DEWATERING BÙN

COMPRESSOR

DISINFECTION B09

STABILISOR

PUMP BO1

GRIT REMOVAL SCR02

PRIMARY TREATMENT TANKS B02/B04/B05

GREASE TRAP B06

AERATION TANK B07

CLARIFIER B08

SCREENING SCRO1

INFLUENT

TREATED EFFLUENT

Table 1: Diagram of Module 2 of the treatment plant and how it’s connected to the system of Module 1

3.4. SLUDGE TREATMENT TECHNOLOGY


All of the sludge from Nhon Trach 3, Phase 2, centralized CETP will be compacted into blocks and being treated appropriately by Tai Tien Co.Limited

The technology used by Tai Tien is already been approved by the MONRE under license No 132/TCMT dated 01/12/2010 through the project earlier EIA report, and the DONRE under Document 1197/SKHCN-QLC dated 9/0/2011 (attached with the Appendix)

Just like the ww treatment technology, after considering the positive results from the treatment of hazardous wastes generated from Module, the project owners have chose the same Tai Tien contractor to deal with the hazardous of Module 2


CHAPTER 4 ASSESSMENT ON IMPACTS OF WASTEWATER

DISCHARGE AT WATER INTAKE

4.1. IMPACTS ON WATER QUALITY (LOAD OF RECEIVING SOURCE AND IMPACT FORECAST USING WATER QUALITY MODELS)

4.1.1. Pollution Load

At the maximum load of 2,000 m3/day, the pollutant load can be estimated as follows:

Table 28: Pollutant Load in Wastewater of Nhon Trach 3 IP Treatment Plant

No. Parameter Concentration (mg/l)

Pollutant load (kg/day)

1 TSS 20 31.62 BOD5 12 143 COD 35.5 1044 N-NH3 0.89 0.765 Total Fe 0.28 0.36

Note: The average pollutant concentration is measured 15/05/2012 (1st sampleat 10:35am; 2nd sample at 13:15, 3rd sample at 16:20)

4.1.2. Assessment on the Impacts on Receiving Sources

Based on the calculation of Table 28, after the Module 2 start operating, a flow of 2,000 m3/ day will contribute into Mareng Canal flow. This equivalent to 31.6 kg TSS, 14 kg BOD5, 104 kg COD, 0.76 kg ammonia and 0.36 kg Total iron

Thi Vai river water is not utilized for domestic water supply but only for waterway transport, irrigation and aquaculture among other. QCVN 08:2008/BTNMT column B2 (the National Technical Regulation on Surface Water Quality) is applied to evaluate the water quality.

Polluted wastewater can cause the following impacts when it is discharged to the environment:

Increase turbidity of the river flow due to SS; alter photosynthetic efficiency and reduce DO in the surface water. Suspended solid could be deposited at the outlet, altering the river flow, river depth and hydraulic conditions. Organic sludge depositing also causes oxygen deficient, forming toxic gases like H2S, CH4, etc. If the receiving source is not cleaned properly, the water will be changed to black and smelly.

Increase organic pollution load (BOD5, COD), increasing organic and inorganic compound oxidization, reducing DO concentration in the water.


Increase nutrients in the water (total N, total P), causing eutrophication

Reduce load bearing and purifying capacity of the river.

Affect to drinking and production water quality.

Affect to load bearing and purifying capacity of receiving sources.

As Mareng Canal is quite short (1.5 km) with small slope, and is under affected by tide, the disperse of pollutants toward downstream from Mareng is slow. Furthermore this river section also receives a 5,000 m3/day from hung Nghiep Formosa Co.Lmited, that’s why the self-mechanism is overall limited. Especially when Mareng is the only discharge road from project site toward the main river (Thi Vai)

As the project treated wastewater will join other discharged sources toward Thi Vai river. That’s why the negative impacts of the project toward Thi Vai will be presented more detail in Section 4.7 “Accumulated and integrated Impacts”

4.2. IMPACTS ON ENVIRONMENT AND AQUATIC ECOSYSTEM

Increase turbidity, reduce DO, affecting to photosynthesis efficiency, altering number of aquatic species in the water.

Impact on food chain of the ecosystem.

If the river could not purified water will be polluted by organic substance and nutrients, affecting seriously to aquatic life, reducing biodiversity (species number and density), etc. narrowing habitat of small animal species in mangrove forest.

Pollution of nutrients: Proper nutrient content will promote algae growing adequately in the food cycle. However, if it increases significantly eutrophication will occur, causing organic pollution.

Nitrogen Impacts:

+ Toxic to fish at high concentration

+ Small NH3 concentration and NO3- are nutrients to algae growth.

+ Conversion of NH4+ to NO3

- needs large volume of DO.

Impacts of Phosphorus:

Phosphorus is an essential nutrient for algae growth. High concentration will promote algae growth. When algae died it will be organic food for bacteria, altering oxygen content, causing fish dead.

Organic Substance Pollution: reduce DO, threatening to fish and other aquatic species.

Impacts of wastewater discharge to mangrove forests (Long Thanh – Nhon Trach and Can Gio district) are not considered yet.


4.3. IMPACTS ON HYDROLOGICAL CONDITIONS

Ma reng Canal flow volume is around 2 m3/s during dry season and increase to <10m3/s during flooding season. The wastewater volume of Nhon Trach 3 IP Treatment Plant is about 2,000 m3/day and night, equally to 0.023 m3/s which will not increase the water flow or the change hydraulic regime of Thi Vai River even during dry season.

4.4. AIR QUALITY IMPACTS

The maximum capacity of Module 2 of the wastewater treatment facility of Nhon Trach 3 IP, Phase 2 is 2.000 m3/day. They could emit odor, H2S, Hydrocarbons, Mercaptan among others affecting to areas near the outlet. However currently there is no detected odour from the Nhon Trach 3 IP Treatment Plant’s discharges, and was reflected through the surveying of residents living along Mareng Canal. Hence it can be concluded that the discharge wastewater does not affect local air quality.

Obviously, the discharge from the Treatment Plant will be really small compare to Thi Vai River flowrate even during dry season (0.023 m3/s vs. 10 m3/s). So the affect toward Thi vai also minimum

4.5. ACCIDENTS RISKS

The effluent is quite large at 2,000 m3/day of the treatment facility could cause river bank erosion. The large effluent may also disturb the river flow, affect small canoe navigation in the outlet area. However as the addition discharge is only 0.23 m3/s while the canoe trip record here is small, just 2-3 canoes travelling on the Canal a day, therefore the affect should be minimal

4.6. SOCIO-ECONOMIC IMPACTS ON WATER SUPPLY IN UPSTREAM AND DOWNSTREAM REGIONS

Wastewater from the treatment facility contains organic substances (BOD5, and COD), causing turbidity increase in Thi Vai River water, offensive odor at the outlet. The effluent discharge can affect to socio-economic as follows:

The discharge of treated ww into Mareng and Thi vai river more or less will impact on the economical activities of residents living along the river. However at this moment, the local government still has not received any complaints from the residents within the affected areas. The impact is analysed generally to be low considering the discharge rate of only 2,000 m3/day and ww quality meeting the QCVN 40:2011/BTNMT column B (kq=1.1; kf =1.0)


4.7. CUMULATIVE IMPACTS

Thi Vai River is the final wastewater receiving source of Nhon Trach 3 IP. As mentioned before, the river water is not used for drinking purpose. The effluent, thus, have met TCVN 5945:2005 column B, Kq=1.1 and Kf depending on the discharge volume of the industries (pursuant to Appendix 1 of Decision No. 65/2007/QD-UBND dated December 11, 2007 of Dong Nai PC on environmental zoning for surface water basin to receive industrial wastewater. The existing effluent of Nhon Trach 3 IP Wastewater treatment facility is 152 m3/day while the permitted volume is 2,000 m3/day. Wastewater is treated in compliance with TCVN 5945:2005 column B, Kq=1.1; and Kf=1.0.

At this moment, Thi vai river is the receiving body for the ww from Nhon Trach IPs (1, 2 & 3, Clothing IP), Go Dau IP (Long Thanh District), and Phu My 1 (Ba Ria –Vung Tau Province). The intake for water supply form Thi vai river is small, with slow river speed, and narrow basin. As the river is heavily affected by tides, the mixing rate of river is slow, and the flow toward the sea is small. That’s why the wastewater from Nhon Trach 3 will cause some problematic negative impacts towards the basin if is not treated properly. However, the effluent can affect to Thi Vai river water quality and flow. It also affects to aquatic ecosystem of the receiving source. The effluent is small comparing to the river flow and the wastewater is treated in compliance with Vietnam environmental standard so the impact is insignificant.

To analyse the accumulated impacts of the project toward Mareng canal and Thi Vai River, we will have to analyse the discharge receiving capacity of Mareng and Thi Vai. The assessment will be based on Circular 02/2009/TT-BTNMT dated 19/3/2009 of the MONRE

The wastewater of the project has to meet the national regulation on industrial discharge: QCVN 40:2011/BTNMT (column B), Kq=1.1, Kf=1.0, before being allowed to discharge into Mareng and Thi Vai

4.7.1. Mareng Pollution Loads Analysis

Mareng pollution loads can be analysed by the limits of polluting parameters in Mareng canal water. It can be presented in table 29 as below

Table 29: Pollution load of Mareng

Parameters BOD COD TSS As Pb Cd HgCtc (mg/l) 25 50 100 0.1 0.05 0.01 0.002

Note: Limitation value Ctc is based on QCVN 08:2008/BTNMT, column B2.


4.7.1.1. Max Pollution loads

Max pollution load that nearby surface water sources can receive, will be calculated using below equation:

Ltd = (Qs + Qt) x Ctc x 86.4When:- Ltd: max pollution load of that water sources with a certain pollutants;- Qs: Flow rate during dry season, Qs= 2.0 m3/s;- Qt: ww flowrate, Qt = 2,000 m3/day = 0.024 m3/s;- 86.4 is the coefficiency from (m3/s)x(mg/l) to (kg/day).

The max pollution load that nearby surface water sources can receive will be presented in below table:

Table 30: The max pollution load that nearby surface water sources can receive

Parameters BOD COD SS As Pb Cd HgQs + Qt (m3/s) 2.024 2.024 2.024 2.024 2.024 2.024 2.024Ctc (mg/l) 25 50 100 0.1 0.05 0.01 0.002Ltd (kg/day) 4371.8 8743.7 17487.4 17.5 8.7 1.7 0.3

4.7.1.2. Current Pollution Loads

Current pollution loads will be calculated using below equation:Ln = Qs x Cs x 86.4

When:- Ln: Present Pollution Loads in receiving water body;- Qs: Flow rate during dry season, Qs= 2.0 m3/s;- Cs: Max concentration of certain pollutants in the river before receives the ww

discharge;- 86.4 is the coefficiency from (m3/s)x(mg/l) to (kg/day).

The Current pollution loads will be presented in below table:

Table 31: The current pollution loads.

Parameters BOD COD SS As Pb Cd HgQs (m3/s) 2 2 2 2 2 2 2Cs (mg/l) 20 46 128 0.002 0.005 UD UDLn (kg/day) 3456.0 7948.8 22.118.4 0.35 0.86 - -Notes: Cs is the average analysed results of Mareng Canal 11/2009. UD= undetected

4.7.1.3. Pollution loads from discharge source

Pollution loads from discharge sources will be calculated using below equation:


Lt = Qt x Ct x 86.4When:

- Lt: Pollution loads in effluent (kg/day);- Qt: Discharge flow rate, Qt= 0,024 m3/s;- Ct: Max concentration of certain pollutants in discharge;- 86.4 is the coefficiency from (m3/s)x(mg/l) to (kg/day).

Pollution loads from discharge sources will be presented in below table:

Table 32: Pollution loads from discharge sources

Parameters BOD COD SS As Pb Cd HgQt (m3/s) 0.024 0.024 0.024 0.024 0.024 0.024 0.024Ct (mg/l) 9 10 48 UD 0.026 UD UDLt (kg/day) 18.66 20.74 99.53 0 0.0539 0 0Notes: Pollutants concentration in effluents is taken from Monitoring Report 11/2011UD= undetected

4.7.1.4. Mareng Pollution loads receiving capacity

Mareng receiving capacity of these pollution loads will be calculated using below equation:

Ltn = (Ltd – Ln - Lt) x Fs

When:- Ltn: Mareng pollution loads receiving capacity (kg/day);- Ltd: Max pollution load of that water sources with a certain pollutants

(kg/day);- Ln: Present Pollution Loads in receiving water body (kg/day);- Lt: Pollution loads in effluent (kg/day);- Fs: safety coefficiency, Fs = 0.3 – 0.7, the project chose Fs = 0.5.

Mareng pollution loads receiving capacity after received the discharge from the CETP can be summarised as below:.

Table 33: Mareng pollution loads receiving capacity after received the discharge

Parameters BOD COD SS As Pb Cd HgLtd (kg/day) 2623.1 5246.2 8743.7 8.7 8.7 1.7 0.2Ln (kg/day) 1036.80 6048.00 5184.00 7.60 - - -Lt (kg/day) 24.88 73.27 41.47 0.06 - - -Ltn (kg/day) 780.71 437.53 1759.10 0.54 4.37 0.87 0.09

Conclusion: Ma Reng Canal, after received the treated ww from the IP will still be able to sustain the loads of parameters BOD, SS, As, Pb, Cd and Hg. Only COD already over the river maximum pollution loads; mostly due to the current pollution load of Mareng is already higher than the Canal max pollution load. In that way, even


when the pollution loads from the CETP contribute unsinificant amount, the river still can’t receive more loads.

4.7.2. Thi Vai Pollution Loads Analysis

Thi Vai pollution loads can be analysed by the limits of polluting parameters in Mareng canal water. It can be presented in table 29 as below

Table 34: Pollution load of Thi Vai

Parameters BOD COD TSS As Pb Cd HgCtc (mg/l) 15 30 50 0.05 0.05 0.01 0.001

Note: Limitation value Ctc is based on QCVN 08:2008/BTNMT, column B2.

4.7.2.1. Max Pollution loads

Max pollution load that nearby surface water sources can receive, will be calculated using below equation:

Ltd = (Qs + Qt) x Ctc x 86.4When:- Ltd: max pollution load of that water sources with a certain pollutants;- Qs: Flow rate Qs of Thi Vai=243.0 m3/s (Under Decision No 65/2007/UBND

of 11/12/2007 by Dong Nai people Committee);- Qt: ww flowrate, Qt = 2,000 m3/day = 0.024 m3/s;- 86.4 is the coefficiency from (m3/s)x(mg/l) to (kg/day).

The max pollution load that nearby surface water sources can receive will be presented in below table:

Table 35: The max pollution load that nearby surface water sources can receive

Parameters BOD COD SS As Pb Cd HgQs + Qt

(m3/s) 2.024 2.024 2.024 2.024 2.024 2.024 2.024

Ctc (mg/l) 15 30 50 0.05 0.05 0.01 0.001Ltd (kg/day) 317,551.1 635,102.2 1

,058,503.7 1,058.5

1,058.5 211.7 21.2

4.7.2.2. Current Pollution Loads

Current pollution loads will be calculated using below equation:Ln = Qs x Cs x 86.4

When:- Ln: Present Pollution Loads in receiving water body;- Qs: Qs of Thi vai= 243.0 m3/s (Under Decision No 65/2007/UBND of

11/12/2007 by Dong Nai people Committee);


- Cs: Max concentration of certain pollutants in the river before receives the ww discharge;

- 86.4 is the coefficiency from (m3/s)x(mg/l) to (kg/day).

The Current pollution loads will be presented in below table:

Table 36: The current pollution loads.

Parameters BOD COD SS As Pb Cd HgQs (m3/s) 243 243 243 243 243 243 243Cs (mg/l) 4 27 24 0,08 UD UD UDLn (kg/day) 73,483.2 556,372.8 493,387.2 1,753.10 - - -Notes: Cs is the average analysed results of Mareng Canal 11/2009.

4.7.2.3. Pollution loads from discharge source

Pollution loads from discharge sources will be calculated using below equation:Lt = Qt x Ct x 86.4

When:- Lt: Pollution loads in effluent (kg/day);- Qt: Discharge flow rate, Qt= 0,024 m3/s;- Ct: Maximum concentration of certain pollutants in discharge;- 86.4 is the coefficiency from (m3/s)x(mg/l) to (kg/day).

Pollution loads from discharge sources will be presented in below table:

Table 37: Pollution loads from Mareng into Thi Vai

Parameters BOD COD SS As Pb Cd HgQt (m3/s) 0.024 0.024 0.024 0.024 0.024 0.024 0.024Ct (mg/l) 20 46 128 0.002 0.005 UD UDLt (kg/day) 3497.47 8044.19 22383.82 0.35 0.87 0 0Notes: Pollutants concentration in effluents is taken from Monitoring Report 11/2011

4.7.2.4. Pollution loads receiving capacity of Thi Vai

Thi Vai receiving capacity of these pollution loads will be calculated using below equation:

Ltn = (Ltd – Ln - Lt) x Fs

When:- Ltn: Mareng pollution loads receiving capacity (kg/day);- Ltd: Max pollution load of that water sources with a certain pollutants

(kg/day);- Ln: Present Pollution Loads in receiving water body (kg/day);- Lt: Pollution loads in effluent (kg/day);- Fs: safety coefficiency, Fs = 0.3 – 0.7, the project chose Fs = 0.5.


Mareng pollution loads receiving capacity after received the discharge from the CETP can be summarised as below:.

Table 38: Mareng pollution loads receiving capacity after received the discharge

Parameters BOD COD SS As Pb Cd HgLtd (kg/day) 317,551.1 635,102.2 1,058,503.7 1,058.5 1,058.5 211.7 21.2 Ln (kg/day) 73,483.2 556,372.8 493,387.2 1,753.1 - - -Lt (kg/day) 1,061.7 6,121.3 5,225.5 7.7 - - -Ltn (kg/day) 121,503.1 36,304.1 279,945.5 -351.1 529.3 105.9 10.6

Conclusion: Thi Vai River, after received the treated ww from the IP will still be able to sustain the loads of parameters BOD, COD, As, Pb, Cd and Hg. Only COD already over the river maximum pollution loads; mostly due to the current pollution load of Mareng is already higher than the Canal max pollution load. In that way, even when the pollution loads from the CETP contribute a relatively small amount, the river still can’t receive more loads.


CHAPTER 5 POLLUTION MITIGATION TOWARD NEARBY SURFACE

WATER

5.1. Environmental Management Program

5.1.1. Construction Stage

5.1.1.1. Water Pollution Mitigation Measures

Request workers using toilet system, preventing pollution.

Lubricant scrap shall be collected properly in the course of repairing and maintenance process, preventing pollution in the local area.

5.1.1.2. Air Environment Pollution Mitigation

To cover truck body properly

To spray water to minimize dust pollution from sand and cement unloading process

To spray water in the sunny and windy days at dust-generated zones.

To manage traffic flow properly; inspect construction equipment and machine and maintain them properly;

To minimize cross-impact and integrated impacts of the project activities and the existing treatment facility operation;

To clean vehicles properly prior leaving the constructions

To control speed of transport vehicles in the project area

To apply proper construction methods. .

5.1.1.3. Solid Waste Pollution Mitigation Measures

Solid wastes from construction activities, e.g. cement, brick, sand, stone, material shall be collected and categorized to reuse for land reclamation;

Domestic solid waste and nonhazardous industrial waste shall be collected to specific tank and outsource Bay Ha Long Co., Ltd. to transfer the wastes to dispose properly (Bay Ha Long Co., Ltd. is collecting domestic waste at the centralized wastewater treatment system at Nhon Trach 3 IP, Phase II, Module 1.

Metal, nylon and paper scraps are sold to recycling establishments.

Hazardous solid wastes such as oil-tainted clout, lubricant, among others shall be collected to specific tanks and outsourced to Tai Tien Co., Ltd. to collect and dispose properly.

To stipulate regulations on sanitation preservation with proper penalty for the one who committed to the regulation violation.


To request workers enforcing occupational safety regulations, raising public awareness on environment protection.

5.1.1.4. Sludge Management to Minimize Adverse Impacts

Sludge is not existed in the construction stage

5.1.1.5. Soil Pollution Mitigation

The impact on soil environment is insignificant so it does not require soil pollution prevention measures.

5.1.2. Operation Stage

5.1.2.1. Water Pollution Mitigation Measures

(1). Industrial Wastewater

Industrial wastewater from enterprises in Nhon Trach 3 IP, Phase 2 shall be treated meeting the limit stipulated by Nhon Trach 3 IP One-member Affiliated Co. (see the limits of allowable parameters of the centralized wastewater treatment connection in appendix).

The centralized wastewater treatment system, Module 1 of Nhon Trach 3 IP, Phase 2 was developed and is operating stably with design capacity of 2,000m3/day to meet the wastewater treatment demand of existing enterprises in the industrial zone. The total wastewater volume is about 545m3/day. The centralized wastewater treatment system, module 2 of Nhon Trach 3 IP will be connected to Module 1 to expand the treatment capacity of the system.

The treated wastewater is monitored properly in compliance with Vietnam Technical Regulation QCVN 40:2011/BTNMT (Column B) to discharge into Lo Ren culvert, flowing to Thi Vai River.

The automatic wastewater monitoring system will be installed to monitor pH, DO, TSS and COD in the treated wastewater.

(2). Domestic Solid Waste

Domestic solid waste will be collected to be treated in the septic tank.

(3). Storm Water

Tin Nghia Corporation developed a separated drainage system in Nhon Trach 3 IP, Phase 2. The storm water is collected to the open canal and discharge into Lo Ren culvert, flowing to Thi Vai River.


The reinforce concrete drainage system cover 30,111.4 m long, comprising of D600 = 2,042 m; D800 = 6,905.6 m; D1000 = 7,020.2 m; D1200 = 485.6 m; D1500 = 11,254.2 m open canal B2000 = 997.5 m; B4000 = 982 m; closed box culvert B3000 = 524.3 m meeting drainage requirements in the IP.

5.1.2.2. Air Environment Impact Mitigation Measures

(1). General Measures to Minimize Air Pollution

The investor will take the following measures to minimize air pollution and impacts on worker’s health in the operation process:

To develop the centralized wastewater treatment system in compliance with regulations on safety and industrial sanitation, meeting the ventilation standard by natural wind and forced fan.

To clean the wastewater treatment zone properly

To provide proper protective uniform for workers and monitor the uniform utilization in the working shift.

To disseminate appropriate information on sanitation and occupational safety for the operators.

(2). Air Pollution Mitigation at the Centralized CETP

1). Use of Bio-Products

If offensive arises, odor bio-products such as GEM-P, GEM-K, GEM, CTA-T will be used to minimize offensive odor from waste storage yard, sludge yard, etc.

2). Odor Oxidization

Odors will be deoxidized by strong oxidizers such as H2O2 or Ozone. H2O2 will be periodically electrolyzed to treat odor. Ozone generator may be installed to process odor. Ozone generator has been applied widely to deoxidize odor in Vietnam.

(3). Air Pollution Control from Traffic Air Emission

The investor will take appropriate measures to control air pollution from traffic, including:

Concretise inner plant roads and clean roads properly; install auto-water spraying system to water the roads effectively

To turn off transport vehicle while waiting in the plant

To regularly maintain and inspect vehicles

(4). Noise Control Measures


The investor will take following measures to reduce noise the operation process:

To install rubber buffer and anti-vibration spring for heavy loading equipments;

To separate intensive noise sources (200 mm thick wall, 100 mm buffer zone, heavy wooden door, etc.);

To regularly maintain equipment properly: the maintenance cycle is in every 4—6 months for branch new equipment and in every 3 months for the old equipment;

Plant trees to mitigate noise dispersion.

(5). Mitigation of Heat Residue

Temperature will exceed the allowable standard from 1 – 30C in the CETP in sunny days. Ventilation will be designed properly. Drinks will be provided to workers.

5.1.2.3. Solid Waste Impact Mitigation

The company got the hazardous waste owner registration book No. 587/SĐK-TNMT dated November 5, 2010, hazardous solid waste management code No. 75001375 When the second module is developed completely the solid waste treatment contract will be signed with the following agencies:

Domestic solid waste: The company signed the contract with Bay Ha Long Co., Ltd to collect the domestic solid waste properly (attached with the solid waste collection contract).

Hazardous Solid Waste: The company continues singing the contract with Tai Tien Co. Ltd. To collect and transport hazardous solid waste properly.

5.1.2.4. Sludge Impact Mitigation Measures

Sludge generated at the centralized wastewater treatment facility will be collected and treated by signing the contract with Tai Tien Co., Ltd.

5.1.2.5. Soil Environment Impact Mitigations

Soil is not affected in the operation process.

Guidance for mitigation measures for CETP operation can be seen in Table 38 below


Table 39: Guidance for mitigation measures for CETP operation

No Acitivities Negative Impact Mitigation method Budgets

(VND) Duration Action doer Supervisors

01 Preparation Phase 1 month

1.1 Research treatment technology

Sustainablilty of surrounding environment

High treatment efficiency - 1 monthProject owner

Department of Science and Technology

Dong nai

02 Construction Phase 6 months

2.1 Deconstruct existing building

- Atmosphere: Bụi, SO2; NOx; CO; CO2; THC. - Injuries, accidents.

- Use water to reduce dusts, carry out within the designed plan and pace. - Training, provide protection gears for workers

Within project budget

Project owner

DONRE Dong Nai

Officie of NRE Nhon Trach;

Nhơn Trạch 3 IP

Administrator

2.2 Storing and transporting materials

- Dusts- flamble gases from fuels

- Manage the plan for transport and handle these materials None

Department of Transport,

Environmental police

2.3 Install machineries, equipments for the treatment

- Dusts and noise- Injuries and accidenrs

- Training, provide protection gears for workers - Rags with grease and oils needed to be contracted to treat appropriately.

Within project budget

DONRE Dong Nai

Officie of NRE Nhon Trach;

Nhơn Trạch 3




plant IP Administrator

2.4 Worker living on site

Domestic solid waste and wastewater

- place bins- collect and treat with current system

10,000,000 đong

Department of Health,

DONRE

03 Operation Phase

3.1 Transport Air emissions such as SOx, NOx, CO, THC,..

- Concretising the internal roads. Watering to reduce dusts.

- Only allow staffs and authorized person travel in

- Set up good timetabling for transport in and out

Using current transport system

Already had

Project owner

Department of Transport

3.2 Operation of the treatment plant

Air emissions from sludges treatment such as: NH3, H2S, CH4, Mercaptan and otehr odours

- Using biological, chemical and oxidising agents to reduce the odours 100,000,000

đong monthly

During operation

phaseDONRE

3.3 Run-off water Carry loose materials into surface water

Run-off will be infiltrated when running through the site drainage system

Using current system

Currently operating

DONRE, Department of Construction

3.4 Solid wastes Domestic wastes, - place bins DONRE




wrapping packages, hazardous wastes from sludges and chemical storage

- collect, sort out and treat appropriately

3.5 Fuel or chemicals leakage

May cause explosion, cause neagative to public health and the environment

Periodic monitoring the fuels and chemicals storage (amounts, conditions) Monthly

monitoring DONRE

3.6 Fire and thunder

Affect companies and public properties

Set up 2 fire hydrants and a lighting arrester to reduce the impact

25,000,000 đồng

Before operation

phase

DONRE, PCCC

(firefighter) police

3.7. The tratemnt plant stop operating properly

Due to broken machinery or electric reasons

The supervisor will stop the operation of the treatment plant

Within project

operation budget

When accidents happens

DONRE


5.2. RISK MANAGEMENT

The investor will take proper measures to prevent and response to environmental incidents and risks as follows:

5.2.1.1. Environmental Incidents in Preparation and Construction Stages

The construction volume is small and carried out in short period. Incidents can be prevented properly. Specifically:

(1). Fire and Explosion Prevention

Workers who work directly at the construction site will be trained on fire and explosion methods.


Provide fire and explosion prevention and fighting equipments at fuel warehouses;


In case of fire and explosion: the investor shall cooperate with Nhon Trach District Fire Police to response to the incident properly.

(2). Mitigation of Traffic Accident

Control and manage traffic properly; proper loading;

Raise public awareness on traffic safety and road law enforcement.

(3). Working Safety, Health Protection and Incident Prevention Measures

Compliance with the regulations on labor safety when elaborate construction plans; proper machine operation, preventive measures; provide adequate labor protection uniforms such as helmet, mask, gloves, clothing, welding glasses, shoes, boots, etc.

To closely monitor the construction process; minimize occupational accidents;

Develop fire and explosion prevention and fighting program, provide proper equipment for responding to the incident if any.

5.2.1.2. Operation Stage

(1). Sanitation and Occupational Safety Measures

Equipment of the wastewater treatment facility comprises of various types. The Corporation will carry out working safety regulation in compliance with existing regulations.


To secure safety for the facility and the workers, the Corporation will install lightning protection system at the highest position in the facility. This will ensure safety against lightning in rainy season.

For electrical devices and power sources, the ground connecting wire will be provided and safety will be check properly. In addition, electrical safety regulation will be elaborated adequately.

For all other machinery systems, the operation regulation will be elaborated based on their specs.

1). Safety for Workers:

To train workers for working safety regulation. The Corporation shall cooperate with Working Safety Division of Dong Nai Department of Labor, War Invalid and Social Affairs to train on safety regulation and operation of specific equipments to secure safety;

Provide proper protection uniform for workers.

In addition, the following measures to minimize adverse impacts on workers’ health:

Implement the periodical health check properly

Improve microclimate conditions meeting the standard of Ministry of Health

Control noise meeting the existing regulation to prevent occupational diseases

Train on and provide safety and sanitation information.

(2). Fire and Explosion Prevention and Response Measures

1). Fire and Explosion Safety:

Provide proper fire extinguisher

Train workers on fire and explosion prevention and response

Store inflammable fuels in isolated warehouses, far from ignition; install safety valve, temperature monitoring equipment, fire alarm for solvent tanks

Provide adequate fire alarming system, information system; check and maintain the fire extinguisher properly.

Smoking ban in inflammable zones

Provide fire and explosion prevention equipment adequately.

2). Equipment

The fire extinguishing system shall be installed, comprising of:

Fire –hydrant

Foam and gas fire extinguisher

Fire extinguisher for all workshops


Water for firefighting: tower, pond

For the Operation Room:

Provide ventilation system properly

Design and install electricity system properly; regularly maintenance to prevent electricity leakage

Install automatic fire alarm system and proper fire extinguisher in the inflammable zones.

3). Fire and Explosion Prevention and Response

In production spaces, fuel storage and product storage, there will be fire alarm, communication and alarming system. Fire prevention and extinguishing devices and means shall be regularly checked to ensure readiness;

Machines, equipment operated at high heat, high pressure will be managed via a profile of technical inspection and registration status at state functional bodies.;

Inflammable solvents, fuels will be stored in isolated storage areas, far from potential source of fire, electrical spark. Fire extinguishing system is combined with distance of 10-12m among workshops for movement of vehicle and man, and sufficient space to prevent spread of fire.

In fire risk spaces, workers must not smoke, carry lighter, matches and sparking or igniting tools;

The company will cooperate with Dong Nai Fire Fighting Police to elaborate fire prevention and response plan, training workers properly.

(3). Fuel Leakage Prevention and Response

The investor will cooperate with competent agencies to inspect the specifications of the fuel storage system to prevent fuel leakage, specifically as follows:

Regularly examine safety of fuel tank to maintain, replace broken device, prevent fuel leakage;

Install fence around the fuel tanks, 5-10 m far from the tank; install warning board, fire ban properly

Fuel and chemical tank truck shall be registered, inspected and maintained adequately.

Raising public awareness on fire and explosion prevention and fighting

In addition, the investor will cooperate closely with competent agencies to elaborate fuel leakage prevention and response plan, inspect the technical system adequately.

(4). Anti-Thunder


Install lightning prevention system at high positions of the factory;

Install lightning conducting system, aggregated electricity conducting and system improvement which applies new technology to get safe height;

Impulsive resistance < 10 while land’s resistance < 50,000 /cm2. Land-contacting impulsive resistance >10 while land’s resistance > 50,000 /cm2;

Install the lighting prevention system for the whole project area and each workshop/warehouse properly;

Using positive lightning prevention device; lightning conducting rods are installed across the project to protect the estimated height of 10-14m;

Invest in the system in compliance with the infrastructure development construction schedule.

(5). Failure of Centralized Wastewater Treatment System

Failure of centralized wastewater treatment system may occur since machines and equipment in the system, including pump, stirring machine, chemical gasification machine, are out of order (due to technical failure or power outage). Other possible causes include worker’s failures to operate in accordance with technical requirements leading to death of microorganisms and temporary stoppage of centralized wastewater treatment system to replant microorganisms. Temporary stoppage of centralized wastewater treatment system will create a big accumulated and untreated volume of wastewater, leading to contamination of soil, water and air.

This incident can be avoided by conducting regular technical checks on operating machines and equipment, replace and repair timely broken ones; provide backup equipment, generator; provide proper technical training to workers.

One the incident occurs the investor will temporarily close all workshops that generate wastewater to discharge to the centralized wastewater treatment system.

Action plans to react against potential risks on case-by-case basic.


Table 40: Actions plans versus potential risks

No. Case Action plan ResponsibilityI Preparation and Construction Stages 1 Fire and Explosion

PreventionWorkers who work directly at the construction site will be trained on fire and explosion methods.

Contractors


Contractors

Provide fire and explosion prevention and fighting equipments at fuel warehouses.

Contractors


Contractors, IZA,

In case of fire and explosion: the investor shall cooperate with Nhon Trach District Fire Police to response to the incident properly.

Contractors, IZA, Fire Police

2 Traffic Accident Control and manage traffic properly; proper loading; Contractors, IZARaise public awareness on traffic safety and road law enforcement Workers, Contractors

II Operation Stage1 Fire and Explosion Inform authorities (in particular, is that fire police).

Rescue the objects in the danger zone.Actively isolate the fire with the existing facilities on site (shepherds, water or fire extinguisher (if any)).

Contractors, industries/enterprises CETP , IZA

Support under the guidance of the functional units until they are present at the scene (especially in situations detect mines, explosion caused by chemical substances etc.).

Contractors, CETP , IZA, industries

Support functional units, local government to set up security perimeter around hazardous areas.

Contractors, CETP , IZA, industries/enterprises

Check the conditions of fire and explosion safety on site, ensuring the problem does not continue.

Contractors, CETP , IZA,


Suspension of work if they violate conditions of fire safety. industries/enterprisesConstruction or operational accidents

Storage the untreated wastewater, built the biological pond if possible CETP , IZA

Have the back up equipments/facilities2 Failure operation of

CETP Place the danger signs and report to authoritiesAvoid over waste loading from enterprises' wastewaterTraining the staff on operation, regularly monitoringCheck the design and prepare the new unit of CETP Prepare for accidental response action plan

3 Electric accidents Disconnect power sources in the incident area and surrounding areasImmediate rescue the objects in the danger zoneExplore the causes of accidents, checking power sources, wires and contacts...

Contractors, CETP , IZD, IZA, industries/enterprises

Make records of accidents Contractors, CETP , IZD, IZA, industries/enterprises


5.3. Public Consultation and Information Dissemination

5.3.1. Public Consultation in EMP Report Preparation

The public consultant was conducted with the people committee and the fatherland front committee of Long Tho commune. The contents are as follows:

The project scale and characteristics;

The project impacts on natural, socio-economic environments;

The adverse impact mitigation measures of the project and

Other issues if any.

5.3.2. Information Dissemination

The environmental management plan was approved and publicized at the people’s committee of Long Tho commune.

The environmental management plan covers:

Organization and operation of the specific environmental division of the project;

Environmental protection education and awareness strengthening;

Responsibility of the project owner in implementation of adverse impact mitigation measures and environmental incident prevention and response in construction and operation stages;

Environmental facilities operation plans;

Monitoring plan for waste sources: ambient air environment monitoring and other monitoring activities in construction and operation stages.

5.4. CAPACITY BUILDING

To build the capacity of the project, the owner will carry out these measures:

Workers working on-site will be frequently trained to deal with fire and explosions-related situations

Train and assign tasks/ measures to mitigate the effect when the treatment plant encounters failure. This situation would also can be avoided by frequent maintenance and repairing of all equipments, machines onsite (the maintenance workers have to be trained and skillful at the job)

Provide protection gears and appropriate equipments for workers based on the nature of their tasks within the system

Provide the workers all safety information about the plant. In the same time, the company will cooperate with Work Safety Office and Dong Nai Department of Labour- Invalids and Social Affairs to set up a safety guide for every step of the plant operation and allow the workers to understand their own responsibilities of the site’s safety;

94

Other than those mentioned above, further measures to mitigate potential impacts on workers health are:

Implement periodic health check for staffs and workers working onsite

Ensure the working environment follow the Department of Health standard;

Mitigate the staffs and workers exposure to loud noises to avoid occupational diseases

Provide and hold training session on health safety measures

5.5. IP ENVIRONMENTAL MANAGEMENT HIERACHY AND RESPONSIBILITIES

5.5.1. Environment Department

5.5.1.1. Functions and Tasks

(1). Function

To advise the corporation manager on environmental management, and wastewater treatment facility as well as to provide environmental consulting services for the customers.

To elaborate and propose environmental management plans, schemes and measures; the centralized wastewater treatment facility operation plan and to provide environmental consultation services for enterprises in and outside Nhon Trach 3 IP.

To cooperate with other competent agencies and customers in management the industrial park environment in compliance with “the Regulation on industrial parks, export processing zone and high-tech parks” which was promulgated together with Decree No. 36/CP in April 24, 2007 of the Government as well as other related regulations.

To operate the centralized wastewater treatment system and other activities related to environment in the industrial park.

To inspect, supervise, operate the centralized wastewater treatment facility and wastewater quality of enterprises in Nhon Trach 3 and conduct repairing in case of failure.

To treat wastewater of Nhon Trach 3 IP meeting Vietnam standard prior discharging to the environment.

To manage, operate and utilize the centralized wastewater facility effectively and efficiently.

(2). Tasks

95

Organise plans and required activities of the treatment plants, monitor business-related environmental contracts, and propose the Director for approval and implementation

Supervise land-renting investors on their contract to meet Environmental Protection laws. Follow the International Organisation for Standardsation (ISO 14001:2004) at the company.

Ultilise the available resources, apply technology creativities on the managements of the treatment plants effectively

Supervise the effluent quality standard to ensure the treated ww from Nhon Trach 3 meet all regulations before being released into the environments

Cooperate with Technical – Infrastructure Departments to maintain the plant and immediately repair any faults of the systems onsite

Hold responsibilities over the contract with environmental consultants; wastes treatments agencies, plant designers, drainage system supervisors and other economical-technical- environmental customers

Implements tasks from the Directors

Follow Organisational Regulations and Activities to promote company business

Implement operation plans and business developing activities as assigned by the company directors

Ultilise available resources, promote upgrades, apply scientific and technical innovations during the plant operation phase

Implement applied designs for the investors of company within Nhon Trach 3 IP

Maintenance the infrastructures of the centralised ww treatment plant

Ultilise the assets, budgets of the company to continuously increase the efficiency of the business

. Commit to provide and update information as requests by the company

5.5.1.2. Environmental Department Hierarchy

96

Team leader

Env Consultants Lab staffs

Supervisor

Operating Staffs Maintenance Staffs

Figure 2: Environmental Department Hierarchy

5.5.2. Wastewater Treatment Hierarchy

5.5.2.1. Function and Task

(1). Function

To manage and monitor compliance with the environment regulations stipulated at Decree No. 36/CP dated April 24, 1997 of the Government on “Regulation on industrial parks, export processing zones and high-tech parks”. To advise the corporation director on issues related to environment of Nhon Trach IP; to perform activities of the treatment facilities and other related activities related to environment in the industrial park.

To inspect, monitor, operate the system and take remedial measures of the station and enterprises in Nhon Trach 3 IP prior transferring to the centralized treatment system.

To treat wastewater of Nhon Trach 3 IP, Phase 2 in compliance with Vietnam standards prior discharge into environment.

To manage, operate functions of the treatment facility effectively and efficiently. .

(2). Tasks

To perform the regulation on the Corporation organization and operation to promote business

To develop proper operation and business promotion plan, and submit to the corporation director for approval and organize the implementation.

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Site supervisor01 người

Lab staff01 person

Operating staffs03 people

Maintenance staffs01 person

To exploit available resources effectively, R&D activities to improve the operation efficiency

To provide consulting services in designing, connecting, construction and supervision for investors in Nhon Trach 3 IP, Phase 2.

To operate, maintain and repair the wastewater discharge infrastructure and centralized treatment system properly.

To manage and develop the assigned fund effectively

To be compliance with information and reporting policy of the company as well as existing regulation

To perform other assigned tasks.

5.5.2.2. Treatment Plant Hierarchy

Figure 7: Treatment Plant Hierarchy

5.6. WATER QUALITY MONITORING AND AUDIT OF RECEIVING BODY

5.6.1. Monitoring of the Centralized Wastewater Treatment Facility

The investor shall collect and analyze some pollution indicators at the treatment tanks and record the data properly to evaluate the operation daily. The monitoring shall be maintained properly.

Specifically as follows:

To monitor the wastewater volume at every storage tank prior pumping to the centralized pipe to collect to the treatment system.

To monitor the wastewater volume prior treatment (at the balancing tank)

To monitor the sludge from the wastewater treatment system.

The mentioned tasks are performed daily.

5.6.2. Monitoring of Pre- and Post-Treated Wastewater Quality

Internal Check:

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+ Are the wastewater treatment facility equipped with rapid metering and sampling equipment to analyze pH, SS, COD and temperature? The monitoring data shall be recorded as achieves to examine the treatment process.+ Frequency: One in every day. + Install monitoring equipment to monitor basic indicators of the treated wastewater quality.

Cooperate with competent agencies: The investor shall sign the contract with competent environmental analysis agencies to collect sample and analysis.

Monitoring locations and indicators: 02 places

+ Pre-treated wastewater: pH, temperature, color, odor, COD, BOD5, TSS, total N, total P, ammonia (by Nitrogen), phenol, cyanua, Cr (VI), Cr (III), Cd, Pb, Cu, Zn, Ni, total Fe, Hg, As, Chloride pesticide, P-pesticide, mineral oil, vegetable oil, sulfur, and Coliform (28 indicators)+ Treated wastewater: pH, temperature, color, odor, COD, BOD5, TSS, total N, total P, ammonia (by Nitrogen), phenol, cyanua, Cr (VI), Cr (III), Cd, Pb, Cu, Zn, Ni, total Fe, Hg, As, Chloride pesticide, P-pesticide, mineral oil, vegetable oil, sulfur, Chloride residue and Coliform (28 indicators)

Comparing standard: QCVN 40:2011/BTNMT, column B, Kq=1.1, Kf = 1.0.

Frequency: 4 times a year.

The analyzed results shall be compared to each other to evaluate the treatment efficiency and take necessary adjustment properly.

(The analysis and periodical environmental monitoring of Nhon Trach 3 IP provide data for local state management over environment adequately).

5.6.3. Monitoring of Water of Receiving Source at the Outlet

Monitoring locations: 2 places in Thi Vai River where receive wastewater of Nhon Trach 3 IP.

Analyzing indicators: pH, DO, SS, COD, BOD5, N-NO2, N-NO3, coliform.

Comparing standard: QCVN 08:2008/BTNMT, column B2.

Frequency: Twice a year.

5.7. EMP PLANNED BUDGET AND SCHEDULE

5.7.1. EMP Budgets

Total budgets for the Environmental management Plan is presented I table below:

Table 41: EMP Budgets99

No Items Costs Note1. Construct the EMP report 71,000,000 Hire consultant2. Monitoring process

2.1.

During Construction 20,000,000 1 year

2.2.

During Operation 36,000,000 1 year

5.7.2. EMP Schedule

The EMP schedule is listed in this table below

Table 42: EMP schedule

No Items Schedule1. Construct the EMP May 20122. Carrying out the EMP Along with the construct of the treatment

plant

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CHAPTER 6 PUBLIC CONSULTATION

6.1. GOALS OF PUBLIC CONSULTATION

6.1.1. Toward Evaluation Authority

Based on the consulting from local authority and the public from the affected areas, it will assist Evaluation Authority to have a more complete view over the project, and make the process (of project evaluating) more efficient

6.1.2. Toward project owner

Receive feedback from local government and the public from the affected areas. From there, provide realistic and effective mitigation proposals and assessments. In the same time, hold up responsibilities to carry out mitigation to reduce long and short-term negative impacts from the projects

Furthermore, create understandings between the project investor the affected public.

6.1.3. Toward consulting agencies

Receive feedback from local government and the public from affected areas. From there, provide realistic and effective mitigation proposals and assessments.

6.1.4. Toward the People’s Committee and Fatherland Front Committee

Assist the authorised body to understand more on the projects through these points: benefits from carrying out the Project, the environment impacts, and negative effects mitigation methods.

This will create more understanding from local government toward the project

6.1.5. Towards the public from affected areas

Help the public to understand more on the projects through these points: benefits from carrying out the Project, the environment impacts, and negative effects mitigation methods.

This will create more understanding from the public; include acknowledging their raise of concerns toward the project

101

6.2. PUBLIC CONSULTATION ACTIVITIES

Project owners have consulted these groups:

People Committee and fatherland Front Committee in Long Tho (project location)

The public, including residents lives nearby and will be affected by the projects

The planned activities are:

Toward People Committee and fatherland Front Committee in Long Tho, the project owner has sent official dispatch toward these local governmental bodies. The official dispatch is attached along with this report;

Towards the residents who live nearby and under effects of the project, the project owners have sent a survey to take their opinions and feedbacks about the projects. The surveys are also attached with this report

6.3. RESULTS OF PUBLIC CONSULTING

6.3.1. Results from consulting the People’s Committee

6.3.1.1. On environmental and socio-economical negative impacts

Project “Construct a CETP with capacity 2,000 m3/day at Nhon Trach 3 IP – Phase 2” at Long Tho Commune, Nhon Trach District, Dong Nai Province” will assist the government on the quests of environmental protection, residential health enhancements, therefore will be very essential in Dong Nai environmental protection plan.

The People’s Committee of Long Tho Commune fully agree with points raised in this EMP report over environmental and socio-economical issues

6.3.1.2. Project Environmental Impact Assessment

People’s Committee of Long Tho Commune has agreed with the environmental impact mitigation plan proposed by the project.

6.3.1.3. Feedbacks toward project owner

Project owners need to pay special attention toward the environment protection efforts during the construction and operation of the project

Need to frequently assess, maintain the wastewater treatment plants, and avoid expected accidents that can affect the local environments and publics.

Need to provide safety equipments for working staffs onsite to ensure their health and reduce risks when accidents occurred. This needed to be done in both construction and operation phases.

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6.3.2. Results from consulting the Fatherland Front Committee

6.3.2.1. On environmental and socio-economical negative impacts

Project “ Construct a CETP with capacity 2,000 m3/day at Nhon Trach 3 IP – Phase 2” at Long Tho Commune, Nhon Trach District, Dong Nai Province” will assist the government on the quests of environmental protection, residential health enhancements, therefore will be very essential in Dong Nai environmental protection plan.

The People’s Committee of Fatherland Front Commune fully agree with points raised in this EMP report over environmental and socio-economical issues

6.3.2.2. Project Environmental Impact Assessment

People’s Committee of Long Tho Commune have agree with the environmental impact mitigation plan proposed by the project

Need to provide safety equipments for working staffs onsite to ensure their health and reduce risks when accidents occurred. This needed to be done in both construction and operation phases.

6.3.2.3. Feedbacks toward project owner

Project owners have to follow legal regulations during both construction and operation phase of this treatment plant.

Project owners have to carry out all environmental impact mitigation plan proposed by the project

Project owners have to ensure order and security, and avoid conflicts between workers from different provinces and local residents

6.3.3. Results of consultations with the public

The results of consultations with the public are summarized below:

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Table 43: Public consultations

No Name Gender

Birth

yearAddress Job Water

sources

Is affected by the project Agree on

the project Other opinionsAir Qualit

yHealth Income Others

1Nguyen

Van Bang

Male 1969

Hamlet 2, Long Tho Commune,

Nhon Trach District, Dong Nai Province

Fishman Well No No No No Agree

The project owner should ensure treated wastewater meet national regulation

2Nguyen

Tan Phuc

Male 1956



Aquaculture

workerWell No No Well is

polluted No Agree

Treat the wastewater and reduce pollution

3 Le Anh Tuan Male 1990

384/19 Hamlet 2, Long Tho

Commune, Nhon Trach District,

Dong Nai Province

Policeman Well No No No No Agree

104

No Name Gender

Birth


sources




4Tran Quoc Hung

Male 1964



No No

Pomelo crop is

affected by water

quality

No Disagree

Project owner should cooperate with local government to monitor and prevent solid wastes and wastewater to enter the open water

5Nguyen Thi Kim

Lien

Female 1969

877/1 Hamlet 2, Long Tho


Dong Nai Province

Un-contracted worker

Well No No No No No opinion

The project owner should be careful with the discharge during rain, to prevent flood onto residential houses near Lo Ren

6 Nguyen Thi Lot

Female

1955 Hamlet 2, Long Tho Commune,

Worker Well No No No No Agree

105

No Name Gender

Birth


sources




Nhon Trach District, Dong Nai Province,

Dong Nai

7Huynh

Thi Nam

Female 1967

859/6/7 Hamlet 2, Long Tho


Dong Nai Province

Workers Well No No No

Odours from wastewater affects the

family

No opinion

Ensure the treated wastewater meet the standard and won’t cause offensive odours

8Nguyen

Thi Dien

Female 1950

815/34/2 Hamlet 2, Long Tho


Dong Nai Province


Well

9Nguyen

Thi Luom

Female 1958




Well No No No No Agree

No Opinion

106

No Name Gender

Birth


sources




10Phan Thi

Hong

Female 1971






11 Phan Thi Loc

Female 1964




The project owner should be careful with the discharge to prevent flood onto residential houses near Lo Ren

12Nguyen

Thi Luoc

Female 1968





No Opinion

107

No Name Gender

Birth


sources




13Tran

Thi Thu Mai

Female 1959



Retailer Well No No No No No opinion

Please excavate Lo Ren frequently, prevent wastewater stagnant, causing flood during rain

14Tran Ngoc Thanh

Male 1975




Ensure the treated wastewater meet the standard

15Phan Thi

Nhung

Female 1989




No Opinion

16Nguyen

Thi Tuyet

Female 1958

861, Hamlet 2, Long Tho


Dong Nai Province


No Opinion

17 Nguyen Thi Nuu

Female

1989 Hamlet 3, Long Tho Commune,

Retailer Well No No Yes No Agree No Opinion

108

No Name Gender

Birth


sources





18Le Binh Phuong

Kim

Female 1977



Dong Nai Province

Retailer Well Yes Yes No No Agree

Flood during rain, The water colour is dark

19Doan Bich

Nguyen

Female 1961





109

No Name Gender

Birth


sources




20Tran Kim Kieu

Female 1969



Dong Nai Province

Retailer Well No No No No Agree

Before Lo Ren discharge is showed to be darken, however it have stopped recently

21Huynh

Thi Nhieu

Female 1971



Retailer Well No No No No Agree

No Opinion

22Truong Dinh Huu

Male 1964




No Opinion

23Huynh

Van Hoa

Male 1959



Dong Nai Province


No Opinion

24 Le Van Dao Male 1948



Retailer Well Yes Yes No No Agree

Ensure flow from Lo ren and reach the main river

110

Based on the survey as above, few key points can be summed up as below:

Most people agree with the construction of the CETP for Nhon Trach 3- Phase 2 (Module 2). Most of the others have no comments on the issues

Many residents faced the issues of flooding from the canal during rainfall, and expected the project owners to have counter-measures for this problem

Project investors comments: Currently the flooding issues at Long Tho Commune is caused by the discharge of Nhon Trach 6 IP, Nhon Trach Clothing IP,and current Nhon Trach 3 especially during high rainfall.

However, based on industrial parks planning, Nhon Trach 6 IP and Nhon Trach Clothing IP discharges will soon going through the discharge road at Suoi Can Bridge and Cai Sinh Canal, once the pipe network there constructed, hence relieve the flowrate through Mareng Canal (and reduce the flood issues here). Currently, the Cai Sinh Canal project have already been proposed by Nhon Trach People Committee and Dong Nai Department of Infrastructure and Planning to Dong Nai People Committee for fundings in fourth quarter of 2012, and start construction in early 2013.

6.4. INFORMATION PUBLICATION

During the construction and operation of the CETP of Nhon Trach 3 IP, Phase 2, the project owners will publish all of the EMP information toward the People’s Committee and nearby residents so the public can monitor/ supervise the project.

The EMP includes these key points:

The organization and activities of project environmental department;

Training, awareness promoting of environmental issues and measures relating to the project;

Responsibilities of project owners in implement measures, impact mitigation activities in the situation of environmental catastrophic during both the construction and operation phases of the project;

Plans to operate environmental protection facility;

Plans to monitor wastes/emissions/ discharges sources and surrounding environment during both the construction and operation phases of the project.

6.5. COMMITMENT FROM TIN NGHIA

Project owners promised to follow all Vietnam regulation during the construction and operation of the project, include:

+ Nearby air quality: Air emissions have to meet Vietnam regulations (QCVN 05:2009/BTNMT, QCVN 06:2009/BTNMT).+ Noise: have to be below the regulated level allowed for residential areas (QCVN 26:2010/BTMNT).

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+ Treated wastewater: reach Vietnam regulation QCVN 40:2011/BTNMT – National regulation about industrial discharge, Column B, Kf=1.0, Kq=1.1.+ Solid wastes: All domestic solid wastes will be contracted to be sorted and treated appropriately. + Sludge: is dewatered, compressed and transported to appropriate site.+ Hazardous wastes: Stores under covers, then hand to authorized agents to handle.+ Hazardous and non hazardous wastes are collected, transported, and treated as Decree 59/2007/ND-CP on solid wastes and Circular 12/2011/TT-BTNMT of MONRE on hazardous wastes

Project owners promise will apply safety features to reduce risks and environmental negative impacts as presented in the report, while strengthen the training of ground staffs to ensure effective operation of the systemThe project owner will take full responsible in front of Vietnam Law if violate International Convention or Vietnam Regulation.

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