Nhon Trach 3 Industrial Park Company Limited

TIN NGHIA CORPORATION

NHON TRACH 3 INDUSTRIAL PARK COMPANY LIMITED

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

ENVIRONMENTAL IMPACT ASSESSMENT

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, 07/2012
TIN NGHIA CORPORATION

NHON TRACH 3 INDUSTRIAL PARK COMPANY LIMITED

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

ENVIRONMENTAL IMPACT ASSESSMENT

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)"

DONG NAI, 07/2012

TABLE OF CONTENTS

TABLE OF CONTENTS

ABBREVIATIONS

LIST OF TABLES

SUMMARY OF THE ENVIRONMENTAL IMPACT ASSESSMENT

1. PROJECT CONTENTS

1.1. Description

1.2. CETP treatment technology

1.3. CETP characteristics

1.4. CETP implementation schedules

2. CHARACTERISTICS OF WASTEWATER RECEIVING BODY BASIN

2.1. Discharge points

2.2. Current environmental status

2.3. Characteristics of wastewater receiving body

2.4. Nearby discharge

2.5. Nearby water supply intake

3. ALTERNATIVE SOLUTION

3.1. Discharge point location

3.2. Wasteawter treatment technology

3.3. Sludge treatment

4. DISCHARGE IMPACT ASSESSMENT

4.1. On water quality

4.2. On the ecology

4.3. On river flow

4.4. On air quality

4.5. Associated risks and accidents

4.6. Socio-economical impacts

4.7. Accumulated and integrated impacts

5. POLLUTION MITIGATION TOWARD NEARBY SURFACE WATER

5.1. Environmental Management Program

5.1.1. Construction stages

5.1.2. Operation stages

5.2. Risks managements

5.2.1. Constructs stages

5.2.2. Operation stages

5.3. Public consulting and Information publication

5.4. Capacity building

5.5. Project owner organisation and responsibilties

5.6. Environmental quality Monitoring

5.7. Costs and schedules of EMP

6. PUBLIC CONSULTING

Commitment From Tin Nghia

CHAPTER 1 PROJECT DESCRIPTION

1.1. PROJECT ORIGIN

1.2. CETP OWNER

1.3. CETP LOCATION

1.4. CURRENT SITUATION OF TECHNICAL INFRASTRUCTURE IN NHON TRACH INDUSTRIAL PARK NO 3 – PHASE II

1.4.1. List of Industries and Their Wastewater Treatment Capacity

1.4.2. Wastewater Collection System

1.4.3. Drainage System

1.4.4. Industrial waste management

1.4.5. Solid Waste Management

1.4.6. Transportation System

1.4.7. Risk Management

1.5. DESCRIPTION OF CETP OF NHON TRACH 3 IP – PHASE 2 (MODULE 2)

1.5.1. Treatment Technology, Influent and Effluent Characteristics

1.5.2. Characteristics of CETP and sluice-gates

1.5.3. Sludge treatment technology

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

CHAPTER 2 CHARACTERISTICS OF THE PROJECT AREA

2.1. GENERAL CHARACTERISTICS OF PROJECT AREA

2.1.2. Socio-economic Conditions

2.2. CHARACTERISTICS OF RECEIVING WATERS

2.2.1. Discharge location

2.2.2. Local Environment Status

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

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

2.3. CURRENT ENVIRONMENT STATUS

2.3.1. Atmosphere Status

2.3.2. Water Quality Status

2.3.3. Soil Status

2.3.4. Surrounding Deposit Status

2.3.5. Ecological Environment

CHAPTER 3 EVALUATION OF ALTERNATIVES

3.1. CRITERIA FOR SELECTING ALTERNATIVES

3.2. LOCATIONS OF OUTLETS

3.3. WASTEWATER TREATMENT TECHNOLOGY

3.4. SLUDGE TREATMENT TECHNOLOGY

CHAPTER 4 IMPACTS ASSESSMENT OF WASTEWATER DISCHARGE INTO RECEIVING WATER BASIN

4.1. EFFECTS ON WATER QUALITY

4.1.1. Pollution Load

4.1.2. Assessment on the Impacts on Receiving Sources

4.2. EFFECTS ON ENVIRONMENT AND AQUATIC ECOSYSTEM

4.3. EFFECTS ON HYDROLOGY

4.4. EFFECTS ON AIR

4.5. IMPACTS OF RISK AND ACCIDENTS

4.6. SOCIAL-ECONOMIC AND DOWNSTREAM WATER USE IMPACTS

4.7. CUMULATIVE IMPACTS

4.7.1. Mareng Pollution Loads Analysis

4.7.2. Thi Vai Pollution Loads Analysis

CHAPTER 5 MITIGATION MEASURES

5.1. ENVIRONMENTAL MANAGEMENT PLAN AND RISK MANAGEMENT PLAN

5.1.1. Typical mitigation measures for the site clearance phase

5.1.2. Typical mitigation measures for CETP construction

5.1.3. Typical mitigation measures for CETP operation

5.1.4. Typical mitigation measures for environmental risks

5.2. RISK MANAGEMENT

5.3. PUBLIC INFORMATION PROGRAM AND COMMUNITY RELATION

5.3.1. Public Consultation in EMP Report Preparation

5.3.2. Information Dissemination

5.4. TRAINING

5.5. ORGANIZATION OF ENVIRONMENTAL MANAGEMENT AND RESPONSIBILITY FOR CETP AND IZ

5.5.1. Environment Department of Nhon Trach 3 IP

5.5.2. CETP operation Team

5.6. MONITORING PROGRAM AND CONTROL OF WATER QUALITY OF RECEIVING WATERS

5.6.1. Monitoring of the Centralized Wastewater Treatment Facility

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

5.6.3. Monitoring of Water of Receiving Source at the Outlet

5.7. CAPACITY BUILDING

5.8. ESTIMATED COST AND TIME FOR IMPLEMENTATION OF EMP

5.8.1. EMP Budgets

5.8.2. EMP Schedule

CHAPTER 6 PUBLIC CONSULTATION

6.1. THE OBJECTIVE OF PUBLIC CONSULTATION

6.1.1. Toward Evaluation Authority

6.1.2. Toward project owner

6.1.3. Toward consulting agencies

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

6.1.5. Towards the public from affected areas

6.2. PUBLIC CONSULTATION IMPLEMENTATION

6.3. RESULTS OF PUBLIC CONSULTATION

6.3.1. Results from consulting the People’s Committee

6.3.2. Results from consulting the Fatherland Front Committee

6.3.3. Results of consultations with the public

6.4. INFORMATION DISCLOSURE

6.5. COMMITTMENTS OF THE PROJECT OWNER

ABBREVIATIONS

LIST OF TABLES

Table 3: The industries in Nhon Trach 3 IP - Phase 1 have pre-treatment system

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

Table 6: Daily operating cost

Table 7: Monthly temperature from 2007 to 2011 – Dong nai province

Table 8: Monthly humidity from 2007 to 2011 – Dong nai province

Table 9: Average annual rainfall Dong Nai

Table 10: List of all wastewater discharge sources from Nhon Trach 3 IP

Table 36: Mixing Rates

Table 37: Typical mitigation measures for CETP construction

Table 38: Typical mitigation measures for CETP operation

Table 39: Mitigation measures for environmental risks

Table 40: Mitigation measures for environmental risks

Table 41: EMP Budgets

Table 42: EMP schedule

Table 43 Public consultations

SUMMARY OF THE ENVIRONMENTAL IMPACT ASSESSMENT

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 780 m3/day; nd peaked at 1,169 m3/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 4,000 m3/day.

1.2. CETP treatment technology

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

 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).

+ 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. 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

2.3. 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

2.4. Nearby discharge

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.

2.5. 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.

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

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 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

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

CHAPTER 1 PROJECT DESCRIPTION

1.1. PROJECT ORIGIN

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, due to the 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 CETP of Nhon Trach 3 IP - Phase 2 (Module 2) capacity of 2,000 m3/day (the total capacity of two phases is 4,000 m3/day) has been proposed to meet the wastewater treatment demand in the industrial park.

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 volume. 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. 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.