ENVIRONMENTAL IMPACT ASSESSMENT · hoa mac urban development and management co.,ltd industrial...

HOA MAC URBAN DEVELOPMENT AND MANAGEMENT Co.,Ltd

INDUSTRIAL POLLUTION MANAGEMENT PROJECT

ENVIRONMENTAL IMPACT ASSESSMENT

Of Subproject

“CONSTRUCT CENTRALIZED EFFLUENT TREATMENT PLANT

WITH CAPACITY 1,500 M3/DAY AT HOA MAC INDUSTRIAL ZONE –

PHASE 1 (MODULE 1)”

FINAL

HA NAM, 04/2014

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TABLE OF CONTENTS

TABLE OF CONTENTS .................................................................................................. i

LIST OF TABLE ........................................................................................................... x

LIST OF FIGURE ..................................................................................................... xiii

ABBREVIATION ....................................................................................................... xiv

EIA SUMMARY ............................................................................................................. 1

I. HOA MAC IZ PROJECT ............................................................................................. 1

II. PROJECT DESCRIPTION ......................................................................................... 1

III. CURRENT STATUS DESCRIPTION....................................................................... 1

3.1. Hydrological characteristics .................................................................................. 1

3.2. Current environment status ................................................................................... 2

IV. ANALYSIS OF ALTERNATIVES ........................................................................... 2

4.1. WW Treatment Technology .................................................................................. 2

4.2. Discharge Location ............................................................................................... 2

4.3. Sludge Treatment .................................................................................................. 2

V. IMPACT ASSESSMENT AND MITIGATION MEASURES .................................... 2

Construction phase ...................................................................................................... 2

5.1. Air .................................................................................................................... 2

5.2. Water ................................................................................................................ 3

5.3. Soil Environment - Resource ............................................................................. 3

5.4. Solid waste (SW) .............................................................................................. 3

5.5. Socio-economic Impacts ................................................................................... 4

Operation phase ........................................................................................................... 4

5.6. Air .................................................................................................................... 4

5.7. Groundwater ..................................................................................................... 4

5.8. Surface water .................................................................................................... 5

5.9. Soil ................................................................................................................... 5

5.10. Ecology system and landscape ........................................................................ 5

5.11. The community, health and safety ................................................................... 5

VI. ENVIRONMENT MANAGEMENT PLAN .............................................................. 5

6.1. Environmental Monitoring .................................................................................... 5

ii

6.2. Cost Estimate and Implementation Time of The Environment Management Plan

(EMP) .......................................................................................................................... 7

VII. PUBLIC CONSULTATION AND INFORMATION DISCLOSURE ...................... 7

7.1. The Objective of Public Consultation .................................................................... 7

7.2. Results of Public Consultation .............................................................................. 7

7.3. Information Disclosure ......................................................................................... 8

INTRODUCTION ........................................................................................................... 9

1.1. ORIGIN OF THE PROJECT ................................................................................ 9

1.2. THE INVESTOR .................................................................................................. 9

1.3. PROJECT’S LOCATION ..................................................................................... 9

1.4. CURRENT SITUATION OF TECHNICAL INFRASTRUCTURE IN HOA MAC

IZ ............................................................................................................................... 11

1.4.1. List of tenants and their WW pre-treatment capacity .................................... 11

1.4.2. Drainage system ........................................................................................... 13

1.4.2.1. Rainwater drainage system ..................................................................... 13

1.4.2.2. Wastewater drainage system ................................................................... 14

1.4.3. Preliminary Treatment Wastewater Treatment System (PTWTS) of the

Tenants (basics and management system) .............................................................. 14

1.4.3.1. PTWTS of FINETEK Vietnam Co.,Ltd ................................................... 15

1.4.3.2. PTWTS of VINAGLAZE Joint Stock Company ..................................... 15

1.4.3.3. PTWTS of NOVAREF Fire Resistant Material Development Joint Stock

Company ............................................................................................................. 16

1.4.3.4. PTWTS of Vietnam Advanced Material Co., Ltd .................................... 16

1.4.4. Management of Domestic and Industrial Wastes .......................................... 16

1.4.5. Traffic system .............................................................................................. 16

1.4.5.1. External traffic ........................................................................................ 16

1.4.5.2. Internal traffic ......................................................................................... 17

1.4.6. Hazardous waste (HW) management ............................................................ 18

1.4.7. Risk management ......................................................................................... 19

1.5. DESCRIPTION OF THE CETP ......................................................................... 21

1.5.1. Treatmnet Technology, Influent and Effluent Characteristics ....................... 21

iii

1.5.1.1. Technology of the CETP ......................................................................... 21

1.5.1.2. Influent and Effluent Standards ............................................................... 21

1.5.2. Charecteristic of the CETP and discharge outlet ........................................... 22

1.5.2.1. WW Characteristics ................................................................................ 22

(1). Types of WW to be treated ....................................................................... 22

(2). Influent Characteristics .............................................................................. 22

(3). Effluent Characteristics .............................................................................. 22

(4). Anticipated WW flow to CETP .................................................................. 23

(5). Evaluation of WW quality ......................................................................... 23

1.5.2.2. Characteristics of CETP .......................................................................... 23

(1). Description of the WW collection system and drainage system .................. 23

(2). Treatment technology ................................................................................ 24

1.5.2.3. Discharge characteristic .......................................................................... 26

(1). Characteristic of discharge systems ............................................................ 26

(2). Discharge method ...................................................................................... 27

(3). Discharge mode ......................................................................................... 27

(4). Discharge flow ........................................................................................... 27

1.5.3. Sludge treatment technology ........................................................................ 27

1.5.4. Total investments and implementation progress ........................................... 27

1.6. ENVIRONMENTAL LEGISLATION AND GUIDELINES .............................. 28

1.6.1. World Bank Policy on Environmental Assessment ....................................... 28

1.6.2. Vietnamese Policy on Environmental Assessment ........................................ 28

1.6.3. The environmental standards and regulaions ................................................ 31

CHAPTER 2 CHARACTERISTICS OF THE PROJECT AREA ................................. 33

2.1. GENERAL CHARACTERISTICS OF THE PROJECT AREA .......................... 33

2.1.1. Natural characteristics .................................................................................. 33

2.1.1.1. Topography, geology, climate ................................................................. 33

(1). Topography ................................................................................................ 33

(2). Geology ..................................................................................................... 33

(3). Climate ...................................................................................................... 37

iv

2.1.2. Socio-economic conditions .......................................................................... 40

2.1.2.1. Socio-economic conditions of Hoa Mac Town in first 6 months of 2013 . 40

(1). Agricultural production .............................................................................. 40

(2). Industrial production - handicraft industry - Civil Construction -

Commercial Services ........................................................................................ 40

(3). Regarding the Traffic – Irrigation system ................................................... 40

(4). Regarding socio-culture issues ................................................................... 40

2.1.2.2. Socio-economic conditions of Chau Giang Commune in first 6 months of

2013 .................................................................................................................... 41


(2). Services ..................................................................................................... 41

(3). Socio-culture, health care, education .......................................................... 42

2.1.2.3. Socio-economic conditions of Trac Van Commune in 2012 .................... 42


(2). Industry - Handicraft Industry and Construction......................................... 43

(3). Irrigation .................................................................................................... 43

(4). Culture – Society and education ................................................................. 43

2.1.2.4. Social-economic conditions of Duy Tien District .................................... 43

(1). Agricultural productivity– rural areas ......................................................... 43

(2). Industry – Handicraft- Construction ........................................................... 44

(3). Natural resources and environment ............................................................ 44

(4). Social and cultural fields ........................................................................... 44

(5). Orientations ............................................................................................... 44

(6). Main targets ............................................................................................... 45

(7). Main tasks .................................................................................................. 45

2.2. CHARACTERISTICS OF THE RECEIVING RESOURCE ............................... 47

2.2.1. WW receiving place ..................................................................................... 47

2.2.2. Natural features ............................................................................................ 47

2.2.2.1. Hydrological characteristics of receiving resource................................... 47

2.2.2.2. Aquatic environment ............................................................................... 47

v

2.3. SUMMARY OF THE EXISTING STATE OF THE ENVIRONMENT AT THE

PROJECT AREA ...................................................................................................... 47

2.3.1. Air ................................................................................................................ 47

2.3.2. Soil .............................................................................................................. 49

2.3.3. Groundwater environment ............................................................................ 51

2.3.4. Surface water ............................................................................................... 52

CHAPTER 3 CHAPTER 3. ANALYSIS OF PROJECT ALTERNATIVES................. 55

3.1. CRITERIA FOR SELECTING ALTERNATIVES ............................................. 55

3.2. WASTEWATER TREATMENT TECHNOLOGY ............................................. 55

3.2.1. Aerotank (AAO) Technology is described as follows: .................................. 55

3.2.2. Comparison among treatment technologies .................................................. 57

3.3. DISCHARGE LOCATION ................................................................................. 59

3.4. SLUDGE TREATMENT TECHNOLOGY ........................................................ 62

CHAPTER 4 ENVIRONMENTAL IMPACT ASSESSMENT .................................... 66

4.1. SOURCE, OBJECTS AND AFFECTED SCALE ............................................... 66

4.1.1. Construction phase ....................................................................................... 66

4.1.1.1. Impact sources related wastes .................................................................. 66

4.1.1.2. Impacts sources unrelated to wastes ........................................................ 68

4.1.2. Operation phase ........................................................................................... 69

4.1.2.1. Impact sources related to wastes .............................................................. 69

4.1.2.2. Impact sources unrelated to waste ........................................................... 70

4.2. ENVIRONMENTAL IMPACT ASSESSMENT (EIA) ....................................... 70

4.2.1. Construction phase ....................................................................................... 70

4.2.1.1. Impacts on air environment ..................................................................... 70

(1). Impacts of site clearance ............................................................................ 71

(2). Impacts of dusts created by means of transportation of materials, equipment

......................................................................................................................... 71

(3). Impacts caused by cutting, welding, painting and metal coating operations 71

(4). Impacts created by residence and living operations of the workers on site .. 72

(5). Impacts created by noises in construction activities. ................................... 72

(6). Impact assessment of air pollutants: ........................................................... 74

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4.2.1.2. Impacts on the water environment ........................................................... 75

(1). Impacts of domestic WW of workers ......................................................... 75

(2). Impacts of WW from cleaning and maintaining machinery ........................ 76

(3). Impacts on groundwater quality ................................................................. 76

(4). Impacts of rainwater running off ................................................................ 76

(5). Impacts of construction wastewater ............................................................ 77

4.2.1.3. Impacts on soil resource – environment................................................... 77

4.2.1.4. Impacts of solid wastes ........................................................................... 77

4.2.1.5. Impacts on social – economic aspects...................................................... 78

(1). Advantaged impacts ................................................................................... 78

(2). Adverse impacts ......................................................................................... 78

4.2.1.6. Synthetic EIA caused by Construction Phase .......................................... 78

4.2.2. Operation phase ........................................................................................... 79

4.2.2.1. Impacts on air.......................................................................................... 79

4.2.2.2. Impacts on groundwater environment...................................................... 80

4.2.2.3. Impacts surface water environment ......................................................... 80

(1). Domestic WW of operators ........................................................................ 80

(2). WW from the CETP ................................................................................... 80

(3). Rainwater runoff: ....................................................................................... 80

4.2.2.4. Impacts on soil ........................................................................................ 81

(1). Solid waste (SW) generated from the treatment phase ................................ 81

(2). Sludge created by the CETP ....................................................................... 81

(3). Domestic solid waste (DSW) ..................................................................... 82

(4). Hazardous waste (HW) .............................................................................. 82

4.2.2.5. Impacts on the ecology and landscape ..................................................... 82

4.2.2.6. Impacts on the community’s activities, health and safety ........................ 82

4.2.2.7. Environment Incidents in the Operation Phase ........................................ 82

(1). Operation Incidents .................................................................................... 82

(2). Incidents caused by natural disasters .......................................................... 83

4.3. DETAILED LEVEL AND RELIABILITY OF ASSESSMENTS ....................... 83

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4.4. EFFECT ON WATER QUALITY ...................................................................... 85

4.4.1. Pollution load ............................................................................................... 85

4.4.2. Impact assessment on receiving source......................................................... 85

4.5. EFFECT ON ENVIRONMENT AND AQUATIC ECOSYSTEM ...................... 86

4.6. EFFECT ON HYDROLOGY ............................................................................. 86

4.7. EFFECT ON AIR ............................................................................................... 86

4.8. EFFECT ON RISK AND ACCIDENTS ............................................................. 87

4.9. SOCIAL – ECONOMIC IMPACTS AND DOWNSTREAM WATER USE ...... 87

4.10. CUMULATIVE IMPACTS .............................................................................. 87

4.10.1. Giat River pollution load analysis ............................................................... 87

4.10.1.1. Maximum pollution load ....................................................................... 87

4.10.1.2. Current pollutant loads .......................................................................... 88

4.10.1.3. Pollutant load from discharge source ..................................................... 88

4.10.1.4. Giat River load receiving capacity ......................................................... 89

4.10.2. Chau Giang River pollution load analysis ................................................... 89

4.10.2.1. Max Pollution load ................................................................................ 90

4.10.2.2. Current pollutant load ............................................................................ 90

4.10.2.3. Pollutant load from discharge source ..................................................... 90

4.10.2.4. Chau Giang River pollution load receiving capacity .............................. 91

CHAPTER 5: POLLUTION MITIGATION MEASURES ............................................ 92

4.11. ENVIRONMENTAL MANAGEMENT PLAN (EMP)..................................... 92

4.11.1. Construction phase ..................................................................................... 92

4.11.1.1. Water pollution mitigation measures ..................................................... 92

4.11.1.2. Mitigation Measures for Impacts of SW and HW .................................. 92

4.11.1.3. Mitigation measures to the air quality .................................................... 93

4.11.1.4. Impact Mitigation Measures for Soil Quality ......................................... 93

4.11.2. Operation phase........................................................................................ 101

4.11.2.1. Impact Mitigation Measures for Water Pollution ................................. 101

(1). Industrial wastewater ............................................................................... 101

(2). Domestic WW ......................................................................................... 101

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(3). Rainwater ................................................................................................. 101

(4). Groundwater ............................................................................................ 101

(5). Pollution in outlets ................................................................................... 101

4.11.2.2. Impact Mitigation Measures for Sludge ............................................... 101

4.11.2.3. Impact Mitigation Measures for Air .................................................... 102

4.11.2.4. Impact Mitigation Measures for Soil Quality ....................................... 102

4.11.2.5. Impact Mitigation Measures for SW .................................................... 102

4.12. RISK MANAGEMENT .................................................................................. 106

4.12.1. In the construction phase .......................................................................... 106

(1). Fire & Explosion Prevention and Fighting ............................................... 106

(2). Traffic Accident Mitigation Measures ...................................................... 106

(3). Traffic safety control, health care and incident prevention and fighting

measures ......................................................................................................... 106

4.12.2. In the operation phase .............................................................................. 106

4.12.2.1. Labor safety and hygiene measures ..................................................... 106

4.12.2.2. Preventive measures and Fire & Explosion Response .......................... 107

4.12.2.3. Preventive measures and Fuel Leakage Response................................ 108

4.12.2.4. Lightning system ................................................................................. 109

4.12.2.5. CETP’s Non-operation Response ........................................................ 109

4.13. COMMUNICATION PROGRAM TO THE COMMUNITY AND

COMMUNITY RELATIONS ................................................................................. 112

4.14. TRAINING ..................................................................................................... 112

4.15. ENVIRONMENT MANAGEMENT ORGANIZATIONS AND

RESPONSIBILITIES FOR THE IZ AND CETP ..................................................... 113

4.15.1. Division of Environmental Affairs ........................................................... 113

4.15.1.1. Functions ............................................................................................ 113

4.15.1.2. Obligations .......................................................................................... 113

4.15.2. Departments working in the CETP ........................................................... 114

4.15.2.1. Functions ............................................................................................ 114

4.15.2.2. Obligations .......................................................................................... 114

4.16. ENVIRONMENTAL MONITORING PROGRAM ........................................ 115

ix

4.16.1. Monitoring compliance with mitigation measures and environmental

standards .............................................................................................................. 115

4.16.2. On basis of the Community’s monitoring ................................................. 115

4.16.3. Monitoring the Project’s completion of indexes ....................................... 116

4.16.4. Environment Quality Monitoring (EQM) Indexes .................................... 116

4.16.5. Automatic monitoring .............................................................................. 118

4.17. EXPECTED EXPENSE AND IMPLEMENTATION TIME OF THE EMP ... 119

CHAPTER 5 PUBLIC CONSULTATION ................................................................. 120

5.1. OBJECTIVES OF PUBLIC CONSULTATION ............................................... 120

5.1.1. For appraisal authorities ............................................................................. 120

5.1.2. For the project owner ................................................................................. 120

5.1.3. For the Consulting Agencies ...................................................................... 120

5.1.4. For the People’s Committee and Committee of Vietnam Fatherland’s Front in

commune level ..................................................................................................... 120

5.1.5. For the impacted communities.................................................................... 120

5.2. PUBLIC CONSULTATION IMPLEMENTATION ......................................... 120

5.2.1. Interviewees ............................................................................................... 120

5.2.2. Implementation methods ............................................................................ 120

5.3. CONSULTATION RESULTS .......................................................................... 121

5.3.1. Consultation results in Hoa Mac Town, Chau Giang Commune and Trac Van

Commune ............................................................................................................ 121

5.3.1.1. Adverse impacts of the Project on the natural environment, socio-

economic aspects ............................................................................................... 121

5.3.1.2. The Project’s Environment Impact Mitigation Measures ....................... 121

5.3.1.3. Recommendations to the Investor .......................................................... 121

5.3.2. Interview results ......................................................................................... 121

5.4. INFORMATION DISCLOSURE ...................................................................... 125

5.5. THE INVESTOR’S COMMITMENTS ............................................................ 125

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LIST OF TABLE Table 1-1. List of Tenants in Hoa Mac IZ ...................................................................... 12

Table 1-2. Concentration of pollutants in influent of CETP ........................................... 21

Table 1-4. WW flow forecast of facilities after complete construction and stable

operation (expected to attract more tenants until the end of 2014) ................................. 23

Table 1-5. Table of total investment ............................................................................... 27

Table 2-1. The depth and thickness of first layer at the drill-hole ................................... 33

Table 2-2. The depth and thickness of second layer at the drill-hole .............................. 33

Table 2-3. Synthetic table of mechanical and physical target of the second layer .......... 33

Table 2-4. The depth and thickness of third layer at the drill-hole ................................. 34

Table 2-5. Synthetic table of mechanical and physical target of the third layer .............. 34

Table 2-6. The depth and thickness of fourth layer at the drill-hole ............................... 35

Table 2-7. Synthetic table of mechanical and physical target of the fourth layer ............ 35

Table 2-8. Synthetic table of mechanical and physical target of the fifth layer ............... 36

Table 2-9. Average temperature in months and years (0C) ............................................. 37

Table 2-10. The hour number of sunshine in months ...................................................... 38

Table 2-12. The average humidity in months and years (%)........................................... 39

Table 2-13. Plants in rich-soil ....................................................................................... 42

Table 2-14. Air quality results in IZ (10th

December 2012) ............................................ 48

Table 2-15. Results of dust, noise and microclimate in some location in IZ (10th

December 2012) ............................................................................................................ 48

Table 2-16. Soil quality (10th

December 2013) ............................................................... 50

Table 2-17. Results of groundwater quality ................................................................... 51

Table 2-18. Results of surface water .............................................................................. 53

Table 3-1. Comparision of applied treatment technologies ............................................ 57

Table 3-2. Analysis of Sludge Treatment Technology Alternative ................................... 62

Table 4-1. Sources of impact related to wastes in the construction phase ...................... 66

Table 4-2. Impacts unrelated to wastes in the construction phase .................................. 68

Table 4-3. Impact sources related to wastes, object and affected scale .......................... 69

Table 4-4. Impact sources unrelated to waste, object, affected scale .............................. 70

Table 4-5. Impacts on Air Environment during Construction Phase .............................. 70

xi

Table 4-6. Pollution coefficient for truck with capacity of 3.6-10 ton ............................. 71

Table 4-7. Ratio of pollutants during welding process (mg/1 welding rod) .................... 72

Table 4-8. Noise intensity of some equipment ................................................................ 73

Table 4-9. Impacts of Air Pollutants .............................................................................. 74

Table 4-10. Forecast the pollution load in waste water of labors (estimated volume of 20

person) .......................................................................................................................... 75

Table 4-11. Flow and Volume of Pollutants Created from Machinery & Equipment

Cleaning and Maintaining Phase on Site ....................................................................... 76

Table 4-12. Pollutant concentration in wastewater of construction phase ...................... 77

Table 4-13. Generalized Table of Impacts in Construction Phase .................................. 78

Table 4-14. Bad Odor Emission Sources in the CETP ................................................... 79

Table 4-15. Calculations of Waste Sludge generated by Hoa Mac IZ’s CETP with

assumed capacity of 1500 m3/day. ................................................................................ 81

Table 4-16. Synthetic Table of Impacts in Operation Phase of the Plant ........................ 83

Table 4-17. Assessment of reliability of the EIA methods applied .................................. 83

Table 4-18. The pollution load in WW of Hoa Mac IZ CETP ......................................... 85

Table 4-19. Pollutant concentrations of Giat River ........................................................ 87

Table 4-20. The max pollution load that nearby surface water source can receive ........ 88

Table 4-21. The current pollution loads ......................................................................... 88

Table 4-22. Pollutant loads from discharge sources ...................................................... 89

Table 4-23. Giat River pollution loads receiving capacity after received the discharge

from the CETP ............................................................................................................... 89

Table 4-24. The limitation values of pollutants in Chau Giang River ............................. 89

Table 4-25. The max pollution load that nearby surface can receive.............................. 90

Table 4-26. The current pollutant load .......................................................................... 90

Table 4-27. The pollution load from Giat river into Chau Giang river ................................ 91

Table 4-28. Chau Giang River pollution load receiving capacity after receiving water

from Giat River and WW from the CETP of Hoa Mac IZ ............................................... 91

Table 5-1. Concerned Agencies in the Environmental Management Programs .............. 92

Table 5-2. Summarized plan for mitigation measures during construction phase ........... 94

Table 5-3. Summarized plan for mitigation measures during operation phase ............. 103

Table 5-4. Summarized plan for mitigation measures for environmental risks ............. 110

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Table 5-5. Environmental Monitoring Program ........................................................... 116

Table 5-6. Expected expense of EMP in the construction phase and first year of

operation ..................................................................................................................... 119

Table 6-1. Results of public consultation ..................................................................... 122

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LIST OF FIGURE Figure 1-1. Hoa Mac IZ location ................................................................................... 10

Figure 1-2. The figure shows the CEPT location and CETP service area of Module 1 & 2

- Phase 1 ....................................................................................................................... 10

Figure 1-3. Rainwater (Rw) drainage system of Hoa Mac IZ ......................................... 13

Figure 1-4. WW drainage diagram of Hoa Mac IZ ........................................................ 14

Figure 1-5. Production Wastewater Reuse Diagram ...................................................... 15

Figure 1-6. Domestic WW treated by 3 Compartment Septic Tank Diagram .................. 16

Figure 1-7. Diagram of WW treatment technology of Hoa Mac IZ ................................. 24

Figure 3-2. Location of outlet from bio-pond to open ditch in IZ ................................... 59

Figure 3-3. Location of outlet from open ditch to Giat River ......................................... 60

Figure 3-4. Outlet location ............................................................................................ 61

Figure 3-5. Diagram of sludge transport route .............................................................. 64

Figure 4-1. The impact of noise on people ..................................................................... 74

xiv

ABBREVIATION

AMS: Automatic Monitoring Station

BOD: Biological Oxygen Demand

CETP: Centralized Effluent Treatment Plan

COD: Chemical Oxygen Demand

CW: Construction Waste

DO: Dissolved Oxygen

DONRE: Department of Natural Resource and Environment

DW: Domestic Waste

EIA: Environmental Impact Assessment

EMP: Environmental Management Plan

MONRE: Ministry of Natural Resource and Environment

OST: Oil Separator Tank

ND: Not detected

NH: National Highway

HW: Hazardous Waste

IZ: Industrial Zone

IZMB: Industrial Zone Management Board

PV: Protection of Vietnam

PTWTS: Preliminary Treatment Wastewater Treatment System

RC: Reinforce Concrete

SS: Suspended Solid

SW: Solid Waste

WB: World Bank

WW: Wastewater

1

EIA SUMMARY

I. HOA MAC IZ PROJECT

1. In order to improve the industrial pollution control in Vietnam, The Government of Vietnam

works with The World Bank (WB) to implement an IDA-financed Vietnam Industrial Pollution

Management Project (VIPMP). This project has 3 components of which Component 2 is to

provide financial assistance for qualified selected industrial zones (IZs) to properly construct and

operate Centralized Effluent Treatment Plants (CETPs) and ultimately to comply with national

environmental requirements in Nam Dinh, Ha Nam, Dong Nai, and Ba Ria-Vung Tau (BR-VT)

Province. Hoa Mac IZ is one of the qualified industrial zones in this project.

2. The construction of Hoa Mac IZ was approved by Vietnamese Government in the Decision

No 1107/QĐ-TTg in 21st August 2006. The EIA Report of Hoa Mac IZ Infrastructure

Construction Project was approved in Decision No. 1094/QĐ-UBND in 1st September 2008 of

Ha Nam Province People’s Committee.

3. According to the approved Decision of EIA, the total capacity of Hoa Mac IZ’s CETP is

6,000 m3/day. The investment in the CETP is divided into the following phases:

- Phase 1: 3,000 m3/day, which is divided into two modules: Module 1 – 1,500 m

3/day,

Module 2 – 1,500 m3/ day.

- Phase 2: 3,000 m3/day & night, which is divided into two modules: Module 3 – 1,500

m3/day, Module 4 – 1,500 m

3/ day.

4. In the initial phase, module 1 – Hoa Mac IZ’s CETP will be installed with capacity of 1,500

m3/day. It serves the discharge of the enterprises leasing the land in IZ (hereinafter called as

tenants) at Chau Giang commune with the serve area of 87.4 hectares and entire municipal WW

in Hoa Mac IZ.

II. PROJECT DESCRIPTION

1. The tenants are responsible for treating wastewater (WW) that is in compliance with Column

B of the National Regulation QCVN 40:2011/BTNMT – National Technical Regulation on

Wastewater. This treated WW will be collected and enter the CETP for further treatment before

final discharge in Giat River.

2. The discharge standard and effluent quality of the propsed CETP is the National Regulation

QCVN 40:2011, Column A, responding to Kq = 0.9; Kf = 1.0

3. The standard applied for discharging to Giat river is National Regulation QCVN

08:2011/BTNMT, Column A1.

4. The effluent of the CETP via the slope of the terrain from the Bio-pond to the ditch in the IZ,

then to Giat River and to Chau Giang River.

5. The applied technology to Module 1 of Hoa Mac’s CETP is Sequence Batch Reactor (SBR)

combined with preliminary physicochemical treatment.

III. CURRENT STATUS DESCRIPTION

3.1. Hydrological characteristics

Chau Giang River: It is a river of Red River system, located in Ha Nam Territory. It is connected

to Red River by two gates: Yen Lenh gate at Duy Tien District anh Huu Bi at Ly Nhan district.

At Tien Phong (Duy Tien District), Chau Giang River is divided into two branches. One is

between Ly Nhan and Binh Luc Districts and another is the between Duy Tien and Binh Luc

Districts. Chau Giang River at Ha Nam Province is 58.6 km long. Average flow rate in dry

season and rainseason is in turn 5 – 10 m3/s and 60 m

3/s.

2

Giat River: Giat River receives WW directly from Hoa Mac IZ. It will receive the treated CETP

effluent with the noted characteristics (Column A1). The average flow rate of the river is 22.6

m3/s.

3.2. Current environment status

Surrounding environmental quality monitoring results in the Project site show that the

environmental quality of air, soil, groundwater and surface water are quite good. Most of the

indexes are in the accepted level under Current Regulations QCVN 26:2010, QCVN 05:2009,

QCVN 09:2008, QCVN 08:2009.

Regarding the rivers receiving the WW treated by Hoa Mac IZ’s CETP, according to results of

calculating pollution level, the rivers are able to receive those WW with said indexes.

IV. ANALYSIS OF ALTERNATIVES

4.1. WW Treatment Technology

Two proposed methods of WW treatment technology for Hoa Mac IZ’s CETP were considered

including SBR and Aerotank. After a careful consideration, the Investor selected SBR

technology for Hoa Mac IZ’s CETP because of some following reseasons:

- SBR is operated with playing role of bio-tank also as sedimentation tank.

- It is operated in batches.

- With a healthy microorganism, SBR technology has a lot of advantages in operation such as

high shock resistance, fast recovery capability.

- The performance of nitrogen treatment may reach up 97%.

- The land used for CETP plan is less than other techonology.

4.2. Discharge Location

The treated WW of Hoa Mac IZ’s CETP is expected to be discharged into Giat river via 1

artificial open Ditch in the length of 1500 m and width of 20 m through out one F600 discharge

sewer with reinforcement bottom of +2.5m. The outlet is located at the ending point of this ditch.

There is no alternative considered for dischsrge location.

4.3. Sludge Treatment

The applied sludge treatment technology to Hoa Mac IZ’s CETP is hardened hazardous waste

sludge which is used to make concrete.

The Investor signed the Contract with URENCO 11 to transport and treat sludge under the

current regulations.

The hazardous waste (HW) is required to be treated comprehensively and stably on basis of the

recommended plan on HW treatment and capacity of URENCO 11. URENCO 11 is licensed to

transport and treats hazardous sludge under Vietnamese Regulations and Laws.

V. IMPACT ASSESSMENT AND MITIGATION MEASURES

Construction phase

5.1. Air

Impacts:

Impacts caused by dusts, gas emission of transportation vehicles and noise are the largest

impacts during the construction phase.

Mitigation measures:

3

To use tarpaulins to entirely cover the trucks’ boot during the process of transportation of

building materials such as sand, rocks on roads.

To arrange reasonable routes in order to ensure that the machinery and equipment are always in

the best technical conditions.

To apply the appropriate construction methods, and to mechanize all operations during the

construction phase.

5.2. Water

Impacts:

Main impacts on the water quality during the construction phase of the Project are domestic WW

of workers. Main contents of the pollutants in the domestic WW are waste matter, suspended

solid (SS), organic compounds (BOD/COD), nutrients (N, P) and pathogenic organisms

(Coliform, E. Coli).


The domestic WW of workers must be collected and treated by septic tanks before discharging

to the environment.

To repair, maintain and replace the construction equipment accessories, oil, clout that must be

collected comprehensively to avoid unexpected spilling on site.

To design rainwater drainage ditches surrounding the site to prevent from contamination of

impurities before discharging to the environment.

5.3. Soil Environment - Resource

Impacts:

Because domestic WW of workers, construction wastes, oil and grease are caused by equipment

and machinery on site, in the construction phase, wastes and WW are generated by workers’

activities from temporary camps. The redundance or leaked wastes during the construction

phase, oil and grease from cars, trucks, construction machinery, etc... if are not well collected

and managed may adversely affect the soil environment. However, only a limited number of

workers will be present on the construction site for a short period of time about 6 months, and

few car and truck would be used. Therefore, the impacts on soil in the construction phase is

small, localized, and temporary.


The Investor will implement appropriate mitigation measures such as domestic and hazardous

waste management to address soil pollution.

5.4. Solid waste (SW)

Impacts:

SW in construction phase is divided into 02 types as domestic waste (DW) and construction

waste (CW).


Limit the CW by planning and using building materials reasonably; also remind workers to

save and strictly manage and monitor the workload.

DW is collected and treated correctly under current regulations.

4

HW of this is collected in specialized barrels and cans with covers to meet the hygienic storage,

transported to environmental services agencies for disposal and treatment.

5.5. Socio-economic Impacts

Impacts:

Advantages:

To create employment for local people;

To increase incomes of workers;

Disadvantages:

Gathering the workforce (about 20 workers per day) during the construction period may cause

adverse impacts on the society and public order in the region;

Number of vehicles getting in and out the site during the construction phase may cause heavy

traffic in the region, leading to higher risks of traffic accidents therein.


To limit the speed of vehicles on site;

To avoid transportation in rush hours.

Operation phase

5.6. Air

Impacts:

Factors affecting air quality are mainly odor caused by decomposition of organic matters which

are available in WW and collection of waste via waste filter and pump. Odor are from inlet,

pump pits, oil and grease separator tanks, bio-tanks, agglomerate flocculation tank, primary

sedimentation tank, SBR tank, sludge tank, pump station, bio-ponds, open ditch, and outlet.

Noise is created by the equipment in CETP such as pump or air blowers, causing direct impacts

on operators. Another Impacts on air is from local in the areas surrounding the IZ and the Plant.


To relief the noise, the machinery must be maintained periodical and used correctly as described

in the manual.

To periodically monitor the air surrounding the CETP’s region.

To grow more trees in the buffer zone to create the landscape and to prevent pollution from

spreading odors.

To handle incidents or accidents during operations.

To clear the site surrounding the artificial ditch in the IZ.

5.7. Groundwater

Impacts:

Operations of the CETP may have impacts on groundwater when pipelines or the tank bottom or

WW in sludge tanks is not controlled.


To monitor and control the groundwater quality in the region; to prevent penetration from

anaerobic tank and leakage in the connection points or transitions in WW pipelines.

5

5.8. Surface water

Impacts:

Domestic WW created by operators includes BOD, COD, and TSS. Normally, WW generated

by operators is treated by septic tanks so its pollutant contents reduce significantly and as the

result, the impacts are insignificant.

WW from the CETP includes components containing SS, microorganisms and other

contaminants.

Run-off water, main components are soil, sand, waste, oil and grease, impurities on the ground

and roof, treatment tank, staircase.


For industrial WW, tenants are required to use pre-treatment technology to make sure that

industrial WW reach B type of QCVN 40:2011 before connecting to the CETP.

WW of operators will be collected and treated by septic tanks.

Rainwater will be collected by its drainage system of IZ via culvert holes in sidewalk.

To regularly monitor the water quality in outlet.

5.9. Soil

Impacts:

The soil is mainly impacted by sludge of CETP and domestic wastes of workers.


The Investor signed the Contract with URENCO 11 to collect, transport and dispose waste

sludge in accordance with current regulations.

5.10. Ecology system and landscape

Generally, impacts on construction of the CETP shall not cause any change in landscape and

ecology system because this region’s land is for construction of IZ. The existing CETP may

create the good reputation for the IZ and good relationships with surrounding communities.

5.11. The community, health and safety

The Project causes insignficant impacts on the public works and the community, except for the

possible odor created by the CETPs, making the surrounding industrial tenants uncomfortable.

However, if mitigation measures are implemented correctly, such odor will be reduced.

VI. ENVIRONMENT MANAGEMENT PLAN

6.1. Environmental Monitoring

I CONSTRUCTION PHASE

1 Monitoring of air quality and noise

Parameters and

frequency

Once for 3 months or at the time of accident: PM10, total

particles, noise (24 hours in average) NOx, SO2, CO

Position Proposed location of CETP

Compared to QCVN 06:2008, QCVN 26:2010

2 Monitoring of groundwater quality

Parameters and

frequency

Once for 6 months; pH, color, hardness, SS, Cl-, NH4+,

Xyanua, NO3-, NO2

-, Sulfate, Fe, Mn, As, E.Coli, Total

Coliform;

6

Position 01 location in the Project’s site

Compared to QCVN 09:2008/BTNMT

3 Monitoring of WW quality

Parameters and

frequency

Once for 3 every months; pH, BOD5, COD, SS, Ammonium,

Phosphate, Chloride, surface active agents, oil and grease

Position 1 proposed position at the tents for workers


II OPERATION PHASE (This Program shall be implemented simultaneously with the monitoring program of IZ.

Therefore, some repeated parameters and position may be cancelled to avoid repetition)

1. Monitoring of air quality

Parameters and

frequency

Once for 6 months or at the time of acciden: temperature, dust,

noise (24 hours in average), CO, SO2, NO2, NH3, H2S, CH4,

VOC



2. Monitoring of surface water/river quality

Parameters and

frequency

Once for 3 months in the first operation year

Once for 6 months in the following years or at the time of

accident: pH, DO, BOD5, COD, SS, Coliform, turbidity, oil

and grease, N-NH4, N-NO3-, Cl

-, P-PO4

3-, SO4

2-, heavy metals

(As, Pb, Hg, Cd, Ni, Cr (III), Cr (VI), Cu, Mn), and surface

active agents.

If AMS is applied, such indexes as pH, TSS and COD shall be

automatically measured in case of incident or accident.

Position 1. 1 km upstream of discharge point of CETP

2. Discharge point of CETP

3. 1 km downstream of the discharge point of CETP

Compared to QCVN 08:2008

3.

Monitoring of groundwater quality

Parameters and

frequency

Once for 6 months: pH, TDS, turbidity, hardness, N-NO3, N-

NO2, total Fe, Cl-, N-NH3, SO4

2-, E. Coli, Coliform

Position Groundwater near the CETP


4. Monitoring of WW quality

Parameters and

frequency

AMS: pH, COD, TSS, and flow rate (continually monitoring)

at effluent discharge point.

Once per month in the first operation year of the CETP

Once for 3 months as the system is operated stably:

temperature, pH, BOD, COD, TSS, TDS, color, N-NH4, total

N, total P, alkali, KLN (As, Hg, Pb, Cd, Ni, Cr (III), Cr (VI),

Cu, Mn, Sn), oil and grease, total CN-, total phenol, chloride,

sulfur, fluoride, residual chloride, total pesticide (organic

chloride and phosphorus or organic matters), total PCB and

coliform.

Position 1. Influent of CETP

2. Effluent of CETP


5. Monitoring of sludge quality

7

Parameters and

frequency

Once per month in the first operation year

Once for 3 months: pH, Pb, As, Cd, Hg, Al, total Fe, Ni, Cu,

Zn, Mn, phenol, PAH, total nitrogen, total phosphate, CN-, và

Coliform.

Daily monitoring the quantity of waste sludge

Position 1. In sludge dryer yards

2. In the sludge treatment area

Compared to TCVN 7629:2007, QCVN 03: 2008

6.2. Cost Estimate and Implementation Time of The Environment Management Plan

(EMP)

Unit of Account: Vietnamese dong

No. Description Expense Funding

1 Implementation of mitigation measures Included in the

EPC Contract

IDA funding

2 Environment training for the CETP

operation 30,000,000

Counterpart funding

3 Monitoring the environment quality

during construction period (1 year) 20,000,000

Counterpart funding

4 Monitoring the environment quality in

the first operation year of the CETP 50,000,000

Counterpart funding

5 Environment Protection fee 20,000,000

Counterpart funding

6

Installation and annual operation of the

Automatic Monitoring System (AMS) for

CETP

654,886,364 IDA funding

Total 774,886,364

VII. PUBLIC CONSULTATION AND INFORMATION DISCLOSURE

7.1. The Objective of Public Consultation

The investor have to consult the following objects:

- The People’s Committee and Committee of Vietnam Fatherland’s Front of Hoa Mac Town,

Chau Giang Commune and Trac Van Commune;

- The surrounding local people who are impacted by the Project in construction and operation

process.

7.2. Results of Public Consultation

Project Owner – Hoa Mac IZMB has done in consultation with The People’s Committee and

Committee of Vietnam Fatherland’s Front of Hoa Mac Town, Chau Giang Commune and Trac

Van Commune in 2013, November 20th

and with the people living around the project area in

2013, November 27th

at IZMB’s office. The results are as below:

- The People’s Committee and Committee of Vietnam Fatherland’s Front of Hoa Mac Town,

Chau Giang Commune and Trac Van Commune have basically reached agreements on

adverse impacts of the Project on the natural environment, socio-economic issues and the

8

Project’s Environment Impact Mitigation Measures issued by the Investor. In addition, there

are some recommendations to ensure the environment quality in the project site.

- Comments of the surrounding inhabitants are as follows:Most of them agree (21/24) with

the construction of “CETP Project with capacity of 1,500 m3/day at Hoa Mac IZ, phase 1,

module 1”. The others (3/24) have no comment.

7.3. Information Disclosure

The “EMP” of the “Construction CETP Project with capacity of 1,500 m3/day at Hoa Mac IZ,

Phase I, module 1” will be disclosed in the Headquarter of the People’s Committee of Chau

Giang Commune, Trac Van Commune, Hoa Mac Town for public awareness, check and

inspection before and during the construction works may commence. In addition, the EMP will

be disclosed in English on the website of Vietnam Environment Protection Fund (VEPF),

Infoshop in Washington DC and at Vietnam Development Information Center (VDIC).

9

INTRODUCTION

1.1. ORIGIN OF THE PROJECT

The national industrialization and modernization process is always associated with the protection

of human health and environment. This is a very important issue in which interested by relevant

agencies.

Hoa Mac Industrial Park is built with the aim of contributing to the economy development by

creating employment for local people in the regions surrounding the IZ and Ha Nam province.

The IZ has many factories in varies production fields. Due to the specific characteristics of the

IZ, the waste (air emission, wastewater, solid waste) are complicated and toxic. It shall impact

on environment of not only the IZ but also the surrounding residential regions.

Therefore, the CETP is necessary and urgent to sustainable develop the IZ in particular and Ha

Nam Province in generally. Therefore, the Investor prepared the documents of the project

“Construction CETP with capacity of 1,500 m3/day at Hoa Mac IZ, Phase I, module 1”.

1.2. THE INVESTOR

The Industrial Zone Development: Hoa Mac Industrial Zone Devepment Management

Co.,Ltd

Represented by: Mr. Hoang Quoc Viet Position: President

Headquarter: No. 39 Nguyen Dinh Chieu, Le Dai Hanh Ward, Hai Ba Trung District,

Hanoi City

Telephone number: 04.62881234 Fax: 04.39763890

1.3. PROJECT’S LOCATION

The Project is located at lot KT-01A, Part I, Hoa Mac IZ, Duy Tien District, Ha Nam Province.

Hoa Mac IZ is located in Duy Tien District in 3 communes and town namely Chau Giang

Commune, Hoa Mac Town, and Trac Van Commune. Hoa Mac IZ’s boundaries are as follows:

- The South : is bordered by Highway 38 air traffic (according to planning).

- The North : is bordered by planning road.

- The West : is bordered by planning road

- The East : is bordered by Giat (according to planning).

Hoa Mac IZ is located in the North of the National Highway 38, which is 12 km from Dong Van

Town and 6 km from Hung Yen Town.

The location of Hoa Mac IZ and master plan including CETP is shown under the following

figures:

10

Figure 0-1. Hoa Mac IZ location

Figure 0-2. The figure shows the CEPT location and CETP service area of Module 1 & 2 -

Phase 1

CETP

location CETP service area of

Module 1

CETP service area of Module 2

CETP service area

of Module 1

CETP service area

of Module 2

11

1.4. CURRENT SITUATION OF TECHNICAL INFRASTRUCTURE IN HOA MAC IZ

Hoa Mac IZ is approved by Ha Nam Province People’s Committee under the detailed planning

with scale of 1/500 over the total area of 203 hectares.

Entire IZ area is located in 2 communes and 1 town that are Chau Giang Commune, Trac Van

Commune and Hoa Mac Town. The Investor cleared ground and invested in construction and

business of technical infrastructure, which is divided into 2 phases:

- Phase 1: 131.6 hectares; (consists of Chau Giang Commune, Hoa Mac Town and Trac

Van Commune)

-Phase 2: 71.4 hectares; (Chau Giang Commune)

At present, the Investor is investing in Phase 1 which is divided into 2 modules under the

administration boundaries (See Figure 1-2).

- Module 1 is in Chau Giang commune, Hoa Mac Town, Duy Tien District, Ha Nam

Province over the serve area of 87.4 hectares.

- Module 2 will be in Trac Van commune, Duy Tien District, Ha Nam Province over the

serve area of 44.2 hectares.

- The CETP is placed at the lot KT-01A, Phase I, Hoa mac IZ, Duy Tien District, Ha

Nam Province with the capacity of 1500 m3/ day (Module I) to serve Phase I (See

Figure 1-2). The area of the CETP (Module I) is nearly 1,400m2.Leased land area:

21.4538 hectares; sharing 16.3%

- The rest land area: 110.1462 hectares, sharing 83.7%

- The green area: 15.6407 hectares, sharing 11.88%

1.4.1. List of tenants and their WW pre-treatment capacity

List of tenants investing in Hoa Mac IZ – Phase 1 is presented in Table 1-1 (up to November

2013).

12

Table 0-1. List of Tenants in Hoa Mac IZ

No. Name of Tenants Area

(ha) Industrial Types

Maximal

operation

Freshwater

demand

m3/day &

night)

Discharge

flow (80% of

water supply)

m3/day &

night

Main pollution

parameters

1 Vinaglaze Joint Stock

Company 0.8021

Producing construction

materials and materials for

ceramic production

Operated in

24/24 43.4 34.7

COD, BOD5, TSS,

Total N, Total P

2 NOVAREF Fire- Resistant

Material Co., Ltd 1

Producing fire resistant

concrete

Operated in

24/24 4.3 3.26

COD, BOD5, Total

N, Total P, TSS, Pb,

Mg, Al

3 Vietnam Advanced Material

Company Limited 2.196

Construction of plants for

lease

Operated in

24/24 20.0 16.0

COD, BOD5, TSS,

Total N, Total P

4 Hanoi Battery Joint Stock

Company 2.9379 Producing battery Unexecuted 0 0

COD, BOD5, Total

N, Total P, TSS, Pb

5 KEYRIN Telecom Vietnam

Company 1.5 Electronic parts In-progress 0 0

COD, BOD5, TSS,

Total N, Total P

6 Vietnam Finetek Company

Limited 1.5178 Electronic parts

Operated in

24/24 40.0 32.0

COD, BOD5, TSS,

Total N, Total P

7

PVC-ME1 Machine

Installation and Mechanics

Company

3.0 Mechanics and machine

installation

Operated in

24/24 4.5 3.5

COD, BOD5, TSS,

Total N, Total P,

Total mineral oil

and fat

8 Ha Nam International

Agriculture Company 2.0

Producing husbandary

food/ food industry

preparing for

construction

0 0 COD, BOD5, TSS,

Total N, Total P

9 Ha Nam Vina Breeding Food

Company 4.0

Producing husbandary

food/ food industry Unexecuted 0 0

COD, BOD5, TSS,

Total N, Total P

Total 21.4538

13

The industrial wastewater from tenants in Hoa Mac IZ – Phase 1 must be treated by themself,

complying with the National technical Regulation QCVN 40:2011/BTNMT, column B. This

is stipulated in the WW Treatment Contract signed by Hoa Mac IZ Development

Management Co., Ltd and tenants in IZ. Then, WW from the preliminary treatment system of

tenants shall be connected to the CETP.

Currently, the preliminary treatment systems are installed and operated by tenants, meeting

the requirements of type B of QCVN 40:2011/BTNMT.

WW of the plants shall be treated via the preliminary treatment system during their operation,

then it flows to the drainage sewer to CETP. The effluent flows continuously even if the

plants are not operated fully in 24/24h.

The waste sludge created from the preliminary treatment system and other hazardous wastes

are collected, transported and treated by URENCO 11 Company under the signed contract.

1.4.2. Drainage system

1.4.2.1. Rainwater drainage system

The rainwater drainage system of Hoa Mac IZ is shown in the following figure:

Figure 0-3. Rainwater (Rw) drainage system of Hoa Mac IZ

- Basically, entire IZ is divided into basins on basis of contour line and flows to the drainage

ditch in the North of IZ and the planned drainage route along the expanded NH38. Finally,

rainwater of IZ after separating garbage, oil and grease is discharged to Giat river.

- The rainwater drainage system is the self-flow system which is constituted by drainage

ditches which are 1.5 m – 2 m from bordering thereof (calculated to the ditch centerline)

- Due to low ground leveling of the IZ, it is possible to select the rectangle drainage culvert

with cover slabs close to the sidewalk to limit the burry depth.

- Rainwater on roads flows to the storm water drainage routes via direct collection pits on

road sides

- Rainwater discharged by the plants is directly connected to the external storm water canal.

The connection sections are constructed and installed by the plants.

- Composition of the rainwater drainage system is as follows:

Water from road,

yard cleaning

Rainwater in garage,

warehouses

Rainwater in the

factories

The initial Rainwater

separation reservoir

Oil &

grease

Oil & grease

separation

Rainwater Drainage direction of the IZ

Drainage ditch along NH 38 and Giat River

14

+) The rainwater drainage routes along the sidewalk consist of 02 types: brick ditchs (B = 600

- 800) and reinforced concrete (RC). Calculated load of cover slabs is the load bearing

pedestrians.

+) The rainwater drainage system crossing roads are RC, with sealed cover slabs under

asphalt layer with B = 600 to B = 1,000 with vehicles’ load H30.

1.4.2.2. Wastewater drainage system

Ww created by plants in the IZ is treated preliminarily by tenants that flows naturally to the

closed pipeline system to approach the collection tank. The rainwater drainage system and

WW collection system are separated. Before reaching the collection tank, the raw waste in

WW is separated by the trash racks over the pipeline. Minimal dimensions of retained waste

depends on distance among metal rods of the trash rack. In order to prevent from waste

stagnation and impacting the effluent’s pressure, the tras rods must be regularly cleaned by

taking waste out by manual or motorized manner. Effluent velocity (v) via open slots is about

(0,65 m/s < v < 1 m/s). The width of open slots is varied upon request and dimensions of the

waste.

Figure 0-4. WW drainage diagram of Hoa Mac IZ

1.4.3. Preliminary Treatment Wastewater Treatment System (PTWTS) of the Tenants

(basics and management system)

The tenants investing in Hoa Mac IZ shall sign the WW Treatment Contract with the Investor,

in which their WW quality before connecting to the CETP shall be preliminary treated to

reach type B of QCVN 40:2011/BTNMT. In order to reach the requirements, the tenants must

invest their PTWTS. The PTWTS of 4 in 5 plants is put into operation, which is below

presented in detail. The 5th

plant has not yet been in plan.

Bio-pond → Canal of water drainage in IZ → Giat river → Chau Giang River

PRODUCTION WASTEWATER DOMESTIC WASTEWATER RAINWATER

recirculating water

system or sewer

rain water

drainage

Preliminary processing

in factory

Rainwater first

phase

Rainwater

drainage

Oil, grease separation

CENTRALISED EFLUENCE TREATMENT PLANT OF INDUSTRIAL ZONE

Conventional

wastewater

cleaner

15

1.4.3.1. PTWTS of FINETEK Vietnam Co.,Ltd

The plant does not create the WW from production activities, only domestic WW which is

treated by BAST septic tank. The technology procedure of BAST is summarized as follows:

- WW is put to the first tank with function of sedimentation - anaerobic fermentation. In

the next tank, WW moves from bottom to top to expose the anaerobic microorganisms in the

mud at the bottom of the tank in dynamic conditions. The organic contaminants are absorbed

and metabolized by microorganisms as the source of nutrients for their growth. Also

depending on these tanks, the works become a series of anaerobic reactors in series to permit

separating them into two phases (acidic and alkaline fermentation). Microbial populations in

each tank will be different and favorable for development. In the first tanks, the acidic-

forming bacteria predominate while in the next tanks, the base- forming bacteria prevails and

in the following tank, the methanogens are primarily.

- The WW treated by BAST is directly connected to the WW collection system of Hoa

Mac IZ.

1.4.3.2. PTWTS of VINAGLAZE Joint Stock Company

* For domestic WW

WW in the kitchen area: This type of WW often has relatively high content of oil.

Therefore, before connecting to the CETP of Hoa Mac IZ, WW from this area is pipelined to

oil separator system. Operating principle of the oil separation tank: the tank consists of 02 cup

of oil separation and sediment. The WW to the first cup is stored in certain time to deposit

sediment and surface oil scum is put to the 2nd cup where the rest separated oil scum and

mineral oil in the WW are put to the 2nd chute. The WW flows to the second tank, then to the

3- compartment septic tank of the plan for further treatment.

For WW from the toilets in the factories, operation houses, etc, the most appropriate

measures are to locally handle by the 3- compartment septic tanks. Operating principle of the

tanks is sedimentation and anaerobic decomposition. SS-based treatment effectiveness is

about 65 - 70% and BOD5 is about 60 - 65%. Then, WW is led to the system of WW

collection and CETP. Sedimentations are stored in the tanks in 3 – 6 months under the

impacts of anaerobic microorganisms, organic matters are decomposed into CO2, CH4 and

inorganic substances. Sediment at the bottom is used as compost or transferred to the specific

dumpsite for burry and disposal under regulations. WW, after being handling in the 3

compartment septic tanks, will be taken to the CETP of Hoa Mac IZ.

* For production WW

The main elements of WW from washing machinery and equipment (ball mills, compressors

and frame compression process) are TSS so the pollution degree is not so high. The Owner

shall construct the sedimentation tank system to collect and reuse this water source. Below is

the diagram of WW and material collection from washing machinery and equipment and

frame filtration:

Figure 0-5. Production Wastewater Reuse Diagram

Sedimentation

tank 2

Sedimentation

tank 1 Reused Generating source

Sedimentation

collection

Sedimentation

collection

16

The wastewater contains dissolved solids of which the main component is the materials led to

the trash rank system to prevent from coarse particles which are unable to get in the

Sedimentation Tank 1. Then, the WW is further sediment in the Sedimentation Tank (ST) 1

and 2. The WW in the secondary ST is returned to mix with underground water for reuse.

1.4.3.3. PTWTS of NOVAREF Fire Resistant Material Development Joint Stock Company


treated by BAST. The technology procedure of BAST is similarly operated to that of Vietnam

FINETEK Co., Ltd (above mentioned).

1.4.3.4. PTWTS of Vietnam Advanced Material Co., Ltd


treated by the 3 compartment septic tanks. Its domestic WW treatment model is shown in the

below diagram:

Figure 0-6. Domestic WW treated by 3 Compartment Septic Tank Diagram

The preliminarily treated WW is led to Hoa Mac IZ’s CETP.

1.4.4. Management of Domestic and Industrial Wastes

Domestic waste is mainly leftovers, shredded paper, plastic bags, etc. At present, total

estimated quantity of domestic waste (DW) of entire Hoa Mac IZ is about 900 kg/ day.

The unhazardous industrial waste includes wooden ballets, carton boxes, plastic waste bins

without hazardous ingredients. However, most of them are reused, or recycled,... and sold in

the markets to recover them as much as possible. Therefore, the ratio for disposal is quite low.

The unhazardous industrial waste (which is not reusable or recyclable) from the plants shall

be collected by the IZ’s Management Board in the temporary storage areas in the IZ under the

signed contracts. Then, Hoa Mac IZ Management Co., Ltd hires functional agencies to

transport and treat them under current regulations and laws.

1.4.5. Traffic system

1.4.5.1. External traffic

+) Roadway:

The existing NH38 (scope: B= 10.5 m) is contiguous to the South of Hoa Mac IZ will be the

main external traffic road of the IZ in short term and it shall be expanded B= 53.0 m in future.

The urban roads passing Hoa Mac IZ plays the roles in collection and connection to the main

external road and others, including:

Compartment 1:

- Circulartion

- Sedimentation

- Biodegradation

Compartment 1:

- Sedimentation

- Biodegradation

Compartment 1:

- Circulartion

- Sedimentation

- Biodegradation

Domestic

WW

Hoa Mac IZ’s CETP

Preliminarily treated

domestic WW

17

+ The urban road passing the IZ from the North to the South has the scope B = 45.0 m,

cross-section 1-1 (7m +11.25 +8.5 m + 11.25 m+7 m) = 45.0 m.

+ The urban road along the North boundary of the IZ has the scope B = 33.95 m, section

4-4 (5m +11.25 m + 3 m +14.75 m = 34m)

+ The urban road along the West boundary of the IZ has the scope B = 24.00 m, section

2-2 (2.75 m +11.25 m +5 m +5 m) = 24.00 m

+ Waterway:

Yen Lenh port is located in the East of Hoa Mac IZ, which is about 2.5 km from the IZ on

Red River so it is very convenient for waterway transportation, goods transportation and

development of the IZ.

1.4.5.2. Internal traffic

Principles of network traffic layout: Internal network traffic in the the IZ is organized in the

form of a chessboard, including a main axis throughout the IZ and branches along the land

boundary and roads perpendicular to the main axis to form a convenient closed traffic system.

- ) Construction scale:

Main technical indexes:

+ Road grade: Internal roads of IZ

+ A1 High-class pavement

+ Modulus of elasticity Eyc >= 153 Mpa

+ Standard design load: 100 kN

+ Design speed: 50 km/h

Construction scale: The cross-section of the main road passing the center of the IZ is 1-1 and

road width is 45m, including:

- Pavement: 11.25m x 2

- Central median: 8.5m

- Sidewalk: 7m x 2

The cross-section of branches is 2-2 and the road width is 21.25 m, including

- Pavement: 11.25m

- Sidewalk: 5m x 2

The cross-section of branches is 3-3 and the road width is 25.25 m, including

- Pavement: 11.25m

- Sidewalk: 7m + 7m = 14m.

+ Structure solutions:

Road base:

The road base is filled with sand from Red River. Its compaction K ≥ 0.95. The upper layer

near the pavement is 50 cm thick, filled with hill soil aggregate with K ≥0.98.

The roads surrounding the IZ are filled with hill soil aggregate with K ≥ 0.95. The upper layer

near the pavement is 50 cm thick, filled with hill soil aggregate with K ≥ 0.98.

18

Slope of the roads surrounding the IZ is 1:1.5, which is adjacent to the plots with vertically

designed roof

Slope of the filled base is stabilized to prevent from erosion by use of riprap in the road

sections passing the canal and growing bamboo leaf grass.

Pavement:

Cross- slope of the pavement i = 2%, the collection pit is installed in the two road edges is in

width of 0.25 m and slope of 20%.

Composition of the pavement structure is as follows:

+ Spreading tack coat with the content of 0.5 kg/m2

+ Overlaying 7 cm Asphalt Concrete Binder Course

+ Spreading prime coat with the content of 1 kg/m2

+ 18 cm- Grade I Aggregate Base Course

+ 36 cm- Grade II Aggregate Base Course

+ Compacted 30 cm fine sand K98

+ Compacted fine sand K95

+ Geotechnical textile R = 12 KN/m

Sidewalk:

Sidewalks for pedestrians and underground infrastructures are designed as follows: the

sidewalk part contiguous to the curbs is 3m wide for pedestrians and the rest is for green trees

(in the equal distance of 8 m/ tree) and grass.

Curbs and cover slabs:

Curbs: the design curbs of roads are concrete class 200. Each curb is 1 m long for straight

road sections and 0.25 m for curving ones. Curbs is 230 mm high. They are placed over the

15 cm- lining concrete class 150.

Cover slabs: Cover slabs are designed for the two road sides and the curbs are contiguous to

triangle ditches of which the bottom is stabilized by concrete cover slabs class 200 in

dimensions of 0.25 x 0, 5 x 0,05 m.

+ Traffic safety control:

Place road signs in the intersections under regulations.

Create road markings.

The road signs and road markings have to comply with the current Road Safety and Sign

Code.

1.4.6. Hazardous waste (HW) management

Currently, HZ in entire IZ is about 4 tons / month, which is mainly waste printing ink boxes,

waste lubricating oil, oil rags, fluorescent bulbs, packs with hazardous ingredients, waste

sludge, etc...

These wastes are classified, stored and labeled in accordance with the provisions of the

Circular No. 12/2011/TT-BTNMT, as follows:

- These waste types are classified separately;

19

- The containers must be sealed;

- They must be stored in the shelters with roofs, clear labels warning hazardous

waste, safe operating and storage procedures.

HWs created by the plants are collected, transported and treated under the contracts signed

with the competent authority which is authorized to transport and handle them under current

regulations and laws.

1.4.7. Risk management

The state of emergency related to the environment include: Fire, explosion, spillway, broken

chemical instruments (including oil), electric failure, defects in drainage system, and technical

problem of the CETP.

a) Fire and explosions

+ Preparations

The companies’ fire extinguishing teams are responsible to monthly check all extinguishing

means and instruments and record them into the Minutes of Fire Prevention & Fighting tools.

The fire extinguishing teams shall cooperate with fire police every six months for training.

The fire extinguishing teams self-practices to response to the emergent case every 3 months.

All practice activities must be recorded into the Minutes of Emergence Response Practice.

The fire extinguishing teams shall daily check and test the fire tankers.

+ Response

Response under the fire prevention and fighting plan accepted by fire police.

b) Spillage of chemicals, oil and grease

+ Preparations

The department/departments using chemicals, oil and grease must be equipped with devices

and rags.

The team leader has to annually popularize the knowledge on preparation and emergence

response to the members.

The Company shall make the emergence response plan every six months. All practice

activities must be recorded into the Minutes of Emergence Response Practice

+ Response

The Board of Directors decides to establish the emergency response team. The Office staff are

responsible for the notices, listing notices to keep officers and staff informed.

Anyone who doubts or suspects any chemical/ oil & grease spillage, it is required to

immediately report to the competent authorities in the list of emergence response (ER) teams.

In case of failure in contact to the responsible people, the detectors must report to the

manager.

The (regional) designated competent officers are responsible for reviewing the situation and

immediately issuing the measures. If any incident is not related to chemicals/ oil & grease,

and not impacting the environment and human beings, the competent authorities is entitled to

clean and make no report. If it is actually caused by spillage/ leakage of chemicals/ oil and

grease or impacting the environment or the health, it is immediately required to issue the

solutions and isolate the incident until it is handled.

20

The officer who is in charge of handling the incidents shall make the best efforts in

minimizing or stopping environment pollution or impacts on human’s health.

In case of failure in settlement, the manager (competent officer) in the venue where the

incident happens, it is required to report the situation to IZ Management Unit

If any solution is made but it does not overcome it comprehensively and it may consequently

cause environment pollution or on the human’s health, the team leader must report the IZ

Management Unit or functional authorities for intervention.

c) Power failure

+ Preparation

The company must make a list of organizations leasing generators (full name, address, contact

phone, email, etc). Those are selected correctly under the procedure on supplier evaluation,

selection and management.

The Office is responsible for passing information to the stations upon receiving notice of a

power outage. The Electric Manager is responsible for arranging and contact to the generator

of tenants.

+ Response

If the power outage happens during operation process, the operators are responsible for

communication to the Electric Manager and generator of tenants but it is no more than 6

hours.

The employees have to operate the generators to the treatment system in case of power outage

under instructions of the generator tenants.

d) Problem of the Drainage system

Problem of the drainage system includes: Broken pipelines, spillage of rainwater and water

supply in the drainage system

+) Preparation

The water treatment plant must prepare instruments to readily cover and seal pipelines.

The Company shall make the emergence response plan every six months. All practice

activities must be recorded into the Minutes of Emergence Response Practice.

+) Response

When receiving feedbacks on the problem (from either internal staff, or hygienic team, or

officers or concerned parties such as customers), the Engineering Department/ the ETP must

immediately approach the site with necessary instruments for handling. In case of failure, it is

obligatory to report the Director for solution.

e) Problem of the Treatment System

+) Preparation

The Team Leader must assign personnel to correctly follow the maintenance schedule;

The operators must prepare instruments for such repair;

The Team Leader shall make the list of organizations to readily maintain or repair the system.

+) Response

Any operator/ or anyone in the treatment plant discovers any problem (of the equipment,

components of the treatment system, etc), it is required to immediately notify the person in

21

charge of repairs. The manager in warranty period is responsible for contact to the warranty

institutes.

If the Company’s technicians are unable to restore the incident, the Chief is entitled to instruct

and contact to the repair and warranty organizations.

It is no more than 6 hours since the system is defected.

Notes:

The Team Leader shall evaluate the results of all practice cases and require actions for

learning experience.

After each troubleshoot, the individual/organizational facilitators must ensure to restore it

comprehensively to cause no impact on the environment.

1.5. DESCRIPTION OF THE CETP

1.5.1. Treatmnet Technology, Influent and Effluent Characteristics

1.5.1.1. Technology of the CETP

Treatment processes of the SBR technology-based CETP consist of the followings:

- Influent contains many large dregs, sand, etc which are removed before reaching the oil

separator tank. This design helps protect the equipment in the CETP.

- Composition of lipid, oils and mineral oil will be removed by oil separator tank to avoid

impacting on the physic-chemical and biological treatment works.

- The group of physic-chemical treatment tanks is designed to remove some heavy

metals, SS in the WW to help stabilize the biological treatment process if influent has varied

pollutant concentration.

- The aerobic biological tank is designed to resolve organic matters. The aerobic bacteria

(activated sludge) will make the process of organic matter decomposing (they are mainly

dissolved organic matters). Oxygen is supplied to the tank through the air blowers to create a

favorable environment for the growth of aerobic bacteria, promoting the decomposition of

organic matters. Circulated sludge flows from the secondary sedimentation tank to anoxic

tank to maintain microorganism content in this tank in appropriate limit.

- Sludge reservoir is designed to reduce the volume and moisture of sludge from 99 % to

96 %. Then, this sludge is pumped through sludge compressor to dewater before being

discharged hygienically.

1.5.1.2. Influent and Effluent Standards

Table 0-2. Concentration of pollutants in influent of CETP

N

o Parameter Unit

Influent stream values

demanded

Safety

coefficient Designed values

1 pH - 5.5-9 1 5.5-9

2 BOD5 (20oC) mg/l 50 6 300

3 COD mg/l 150 3 450

4 TSS mg/l 100 3 300

5 Total N mg/l 60 1 60

6 Total P mg/l 10 1 10

7 Others - QCVN 40:2011/BTNMT

(column B) 1

QCVN 40:2011/BTNMT

(Column B)

22

Quality of influent of CETP must meet the standards in Column B, the Regulation QCVN

40:2011/BTNMT. Details are as follows:

Effluent quality of CETP: WW after treating are meeting the national discharge standard

QCVN 40:2011/BTNMT, column A, Kq = 0.9, Kf = 1.0

1.5.2. Charecteristic of the CETP and discharge outlet

1.5.2.1. WW Characteristics

(1). Types of WW to be treated

Hoa Mac IZ is determined as a multidisciplinary IZ, manufacturing sector is less hazardous

pollution. Orientations of the main industries are as follows:

- The agricultural products and foodstuffs processing industry.

- The garment industry.

- High-class consumer goods producing industry.

- The industry of mechanics, assembly, electronics.

Tenants in Hoa Mac IZ are required to have advanced technology Preliminary Treatment

Wastewater Treatment System under the State’s Regulations, and use of local material supply

and workforce.

With the above mentioned characteristics of the industries in Hoa Mac IZ, compositions of

influent of CETP are mainly from production and business process of the plants in the IZ. In

addition, there is WW from services in the region and domestic WW of officers and staff, etc.

(2). Influent Characteristics

It is recognized that if each tenant has unavailable WW management and treatment measures

before discharge into the general drainage system of the IZ, contents of the pollutants in WW

are large. Concentration of large volume of WW for in-place treatment is ineffective because

the expense of such plant and operation cost are so high and it is very difficult to call

investors. Also it is easy to cause risks of water environment pollution. Therefore, WW from

plants and factories before being discharged into the general drainage system and CETP, must

be preliminarily treated to reach the standards column B, QCVN 40:2011/BTNMT.

(3). Effluent Characteristics

Quality of effluent of the treatment system: The treated WW must meet the standards in

Column A, the Regulation QCVN 40: 2011/BTNMT, responding to Kq=0.9; Kf=1.0.

Table 0-3. The quality of treated WW meeting QCVN 40:2011, column A

No Parameter Unit QCVN40:2011/BTNMT, Column A

1 Temperature 0C 40

2 pH - 6 – 9

3 COD mg/l 75

4 BOD5 mg/l 30

5 SS mg/l 50

6 Total N mg/l 20

7 Total P mg/l 4

8 Color Pt-Co 50

9 Fe mg/l 1

23

No Parameter Unit QCVN40:2011/BTNMT, Column A

10 Pb mg/l 0.1

11 Mn mg/l 0.5

12 As mg/l 0.05

13 Hg mg/l 0.005

14 Coliform MNP/100ml 3000

(4). Anticipated WW flow to CETP

Currently, WW flow in entire Hoa Mac IZ is quite low, about 81.8 m3/day. It is planned to

call for more investors in construction of the CETP. In addition, the existing companies which

have completed the basic construction and be put in stable operations, their WW flow in the

future is anticipated and shown in below table:

Table 0-4. WW flow forecast of facilities after complete construction and stable operation

(expected to attract more tenants until the end of 2014)

No Tenants

Rented

area

(ha)

Demand of

using clean

water (m3/day)

Effluent

(m3/day)

1 Vinaglaze Co.,Ltd 0.8021 86.8 69.4

2 NOVAREF JSC., 1.0 12.9 10.32

3 Advanced material Vietnam Co.,Ltd 2.196 240 192.0

4 Hanoi Battery JSC., 2.9379 150 120.0

5 KEYRIN Telecom Vietnam Company 1.5 170 136.0

6 FineTech Company 1.5178 170 136.0

7 PVC-ME1 Company 3.0 50 40.0

8 Hanam International Agriculture Co.,Ltd 2.0 45 36.0

9 Vina Hanam Animal Feed Company 4.0 65 52.0

10 Expected attracting investment is 12 ha at

the end of 2012 12.0 660

528.0

Total 30.9538 1,649.7 1,319.7

(5). Evaluation of WW quality

The above mentioned criteria of influent and effluent show that: Influent secures to facilitate

the treatment plant to be operated the most effectively to contribute to maintaining the

stability and quality of treated effluent under the applied standards.

1.5.2.2. Characteristics of CETP

(1). Description of the WW collection system and drainage system

Collection culverts: The design culvert pipelines are reinforce concrete (RC) pipeline M300

with the diameter of 300-600 mm. The culvert pipe is centrifugal with the length of 2 m in

each culvert segment. The culvert segments are connected by jute and asphalt, covered with

pure cement mortar.

Apron is the fixed design with RC M200 over the 10 cm compacted sand.

Each 3 m culvert segment uses 03 aprons with the minimal burry depth of 50 cm to the

culvert top.

Manholes: The design manhole is RC M200 over the 10 cm compacted sand. The cover is 10

cm RC M200 slabs.

24

The treated WW will be discharged via RC culvert system to approach the bio-pond, then to

the open ditch in the IZ in the length of 1,500 mm before draining to Giat River.

(2). Treatment technology

The WW treatment technology is described in detail via the following diagram:

Figure 0-7. Diagram of WW treatment technology of Hoa Mac IZ

Wastewater

Pump pit

Oil separation tank

Equalization tank

Coagulation tank

Flocculation tank

Primary sedimentation tank

pH buffer tank

Selector A tank

SBR A tank

Selector B tank

SBR B tank

Disinfection tank

Bio-pond

Sludge tank

Sludge compressor

Fine Screen

Submersible agitator

NaOH

Aluminum

H2SO4

Polymer

NaOH

H2SO4

Floating scum

Sludge

Wastewate

r

Residual

sludge

NaOCl

Discharge Dewater Sludge

Polymer

Slu

dg

e c

ircu

lati

on

25

Technology description:

a) Pump pit

All the effluents from the plants are drained to the pump pits of CETP. Before discharging to

the pump pit, WW is led to the raw trash rack system (10 mm) to remove waste or materials

in the form of large fiber to protect the following works. The pump pits are divided into 02

compartments. As the WW is piped to the pump pit, sand is retained in the first compartment.

The sand volume is periodically suck hygienic by sludge digestion plants (SDP). The WW to

the second compartment is pumped to separate oil and grease.

b) Oil Separator Tank (OST)

Before getting in the OST, WW is led to the fine screen to remove the sediment particles in

sizes of over 2 mm. Most of the WW after sediment separation automatically flows into the

oil scum separator tank (OSST) to remove oil, grease, and SS smaller than the WW density,

then flows to the equalization tank.

c) Equalization tank

Equalization tank functions to circulate the flow and concentration of pollutants in WW. The

sunk stirrer is installed in the tank to minimize sedimentation sludge process. Then, WW is

pumped to coagulation tank.

d) The coagulation tank

At the coagulation tank, WW is mixed with coagulation chemicals which are lit from

chemical reservoir via metering pump. Coagulation substances help stabilize colloidal

particles and stimulate them to combine with the other suspended solids to form larger

particles. At the same time, pH of the WW in coagulation tank is adjusted to the optimum

value for the colloidal process.

e) Flocculation tank

WW from the coagulation tank is led through the flocculation tank. Like coagulation tank, at

flocculation tank, anionic polymer will be lit in order to stimulate the formation of larger

cotton residue. This polymer is able to form the bridge to connect these cotton residues to

constitute larger cotton residues to improve the efficiency of the following sedimentation

tanks. WW from flocculation tank is directed to the primary sedimentation tank to separate

the cotton from sewage sludge.

f ) Primary sedimentation tanks

In the primary sedimentation tank, the sediment solids in WW is settled down by gravity

method. The primary sedimentation tank can help eliminate 60% of SS and a part of BOD in

the organic sediment particles. Sediment sludge at the bottom of the primary sedimentation

tank is transferred to the sludge reservoir with sludge rods and pumped through the sludge

reservoir. The oil scum is floating on the scum tank before being pumped into the sludge

reservoir. After the deposition, the WW flows into the Selector Tank.

g ) SBR Tank

From Selector tank, WW flows to Sequence Batch Reactor Tank (SBR Tank) which is

upgraded from classical activated sludge system of which processes (phases) are treated as

follows: filling, reaction, sediment, and drainage in one tank in certain time in each process.

SBR Tank’s operation process is summarized as follows:

26

Filling T = 2 hours

Discharge T = 1 hours

Sediment discharge

Sediment T = 45 minutes

Reactor T = 2 hours 15

minutes

Disorder

Aerobic

In the filling phase, WW is put into a tank with available certain amount of microorganisms

(sludge). For this phase, the initial decomposition process of organic matter occurs when

microorganisms are exposed to WW. After finishing the filling phase, the process continues

with reaction phase in which WW is mixed with microorganisms by surface air blower. Gas is

provided to the tank to conduct the full decomposition of organic matters. The reaction phase

is followed by sediment to separate microorganisms (sludge) from treated WW.

After finishing the sediment phase, treated WW is removed from the tank by activated

drainage phase and filling phase to carry out the new processing cycle. Discharge process of

residual microorganisms (sludge) in an SBR tank can be carried out as a separate phase or

added in the drainage phase.

h ) Disinfection tank

At the disinfection tank, WW is mixed with disinfectant provided by metering pump system

to destroy bacteria and coliform and other pathogenic microorganisms. The disinfection tank

is designed to create the best mixing between WW and disinfectants. The treated WW is

discharged into the receiving source.

i ) Bio - pond

Bio-pond is known as a pond of oxidation and stabilized WW for treating WW by bio

measures which mainly depends on the self-cleaning process of the pond. In addition to the

effects of stable treatment for WW, it functions to circulate the flow and WW quality before

discharging into the receiving source.

1.5.2.3. Discharge characteristic

(1). Characteristic of discharge systems

WW after treating that meets the National Technical Regulation flows to the bio-pond of IZ,

then to the open ditch via underground culvert before draining to Giat River via F600 culvert

with bottom reinforcement of +2.5 m. The open internal canal is 1500 m long and 7 m wide.

27

(2). Discharge method

Discharge upon the slope of the terrain from the bio-pond to the internal ditch in IZ, then to

Giat river and Chau Giang river.

(3). Discharge mode

As the project of “Construction CETP with capacity of 1,500 m3/day at Hoa Mac IZ, Phase I,

module 1” is completed, WW flow may increase by 1,319.7 m3/day & night. Therefore, it is

operated in 24/24 h as it is exploited officially.

(4). Discharge flow

Maximal discharge: 1,320 m3/day;

Minimal discharge: 250 m3/ day;

Average discharge flow: 860 m3/ day.

1.5.3. Sludge treatment technology

Excess sludge from the primary sedimentation tank and SBR tank will be pumped into the

sludge tank for storage before being pumped to the sludge compressor. Sludge tank is covered

to prevent odor pollution to the surrounding environment.

Sludge dewatering conveyor is used to separate water from the sludge. For this process, the

polymer will be lit as an auxiliary substances in the process of dewatering from the sludge.

After dewatering sludge in cake form will be stored in temporary sludge storage area. Water

separated from the sludge dewatering process will be recycled at the pump pit.

The Investor signed the Contract with URENCO 11 to transport and treat hazardous sludge

under the State’s current regulations (attached the Contract).

1.5.4. Total investments and implementation progress

a) Total investment

Total investment: VND 21,630,394,539

Capital structure:

- Loan from Vietnam Environment Protection Fund (VEPF) (75% total

investment) : VND 16,222,500,000

- Owned fund (25% total investmnet) : VND 5,407,394,539

Table 0-5. Table of total investment

No Items IDA loan

(VND)

Counterpart

fund (VND) Total (VND)

1 Preparing investment 500,000,000 500,000,000

2 Construction 5,500,000,000 1,500,000,000 7,500,000,000

3 Equipment 6,500,000,000 1,500,000,000 8,000,000,000

4 Initial working capital 130,000,000 130,000,000

5 Others 80,000,000 500,394,539 580,394,539

6 Completment,

transfering to use 60,000,000 250,000,000 310,000,000

7 Provision for expenses 3,082,500,000 1,527,500,000 4,610,000,000

Total 16,222,500,000 5,407,894,539 21,630,394,539

28

b) Implementation Progress

- Infrastructure construction: 5 months;

- Installation of equipment, technology pipeline systems: 3 months;

- Pilot run: 2 months;

- Technology transfer, acceptance and handover: 1 month.

1.6. ENVIRONMENTAL LEGISLATION AND GUIDELINES

1.6.1. World Bank Policy on Environmental Assessment

The environmental and social screening according to the criteria described in the Bank’s

policy on environmental assessment has been carried out, and the result shows that the WB

policies on Environmental Assessment (OP 4.01). The screening has also resulted in

categorizing the subproject as a Category B subproject due to it moderate impacts associated

with the construction and operation of the CETP. In addition, the Bank’s requirements on

public consultation and information disclosure will need to be followed.

Environmental Assessment (OP/BP 4.01):

Environmental Assessment (EA) is an umbrella policy for the Bank’s safeguard policies. The

overarching objective is to ensure that Bank-financed projects are environmentally sound and

sustainable, and that decision-making is improved through appropriate analysis of actions and

of their likely environmental impacts. The EA process is intended to identify, avoid and

mitigate potential impacts of Bank operations. EA takes into account the natural environment

(air, water, and land); human health and safety; social aspects (involuntary resettlement,

indigenous peoples, and physical cultural resources); and transboundary and global

environmental aspects. EA considers natural and social aspects in an integrated way.

This subproject triggers OP 4.01 because it involves the construction and operation of the

CETP, resulting in potential adverse environmental and social impacts that require

appropriate mitigation measures. As required by OP 4.01 and the government EA regulation,

the subproject has prepared an EIA with an associated EMP that meet the Government’s and

the World Bank’s safeguards requirements. By the subproject appraisal, the subproject EIA

and has been disclosed locally at the subproject site and at the Bank’s InfoShop, and the

Vietnam Development Information Center.

World Bank Group Environmental, Health, and Safety Guidelines

This subproject should conform to the World Bank Group Environmental, Health, and Safety

Guidelines1 (known as the "EHS Guidelines"). The EHS Guidelines are technical reference

documents with general and industry-specific examples of Good International Industry

Practice.

The EHS Guidelines contain the performance levels and measures that are normally

acceptable to the World Bank Group and are generally considered to be achievable in new

facilities at reasonable costs by existing technology. The environmental assessment process

may recommend alternative (higher or lower) levels or measures, which, if acceptable to the

World Bank, become project- or site-specific requirements.

1.6.2. Vietnamese Policy on Environmental Assessment

(1) National Environmental Legislation

1The EHS Guidelines can be consulted at www.ifc.org/ifcext/enviro.nsf/Content/EnvironmentalGuidelines.

29

- Construction Law issued by the National Assembly of the Socialist Republic of Vietnam on

26 November 2003;

- Fire Prevention and Fire Code issued by the National Assembly of the Socialist Republic of

Vietnam on 29 June 2001;

- Investment Law issued by the National Assembly of the Socialist Republic of Vietnam on

29 November 2005;

- Law on Environmental Protection issued by the National Assembly of Vietnam on 29

November 2005;

- Law on Chemicals issued by the National Assembly of the Socialist Republic of Vietnam on

21 November 2007;

- Law on Biodiversity issued by National Assembly of the Socialist Republic of Vietnam on

13 November 2008;

- Urban Planning Act issued by the National Assembly of the Socialist Republic of Vietnam

on June 17, 2009;

- Law on Water Resources issued by the National Assembly of Socialist Republic of Vietnam

on June 21, 2012.

- Decree No.59/2007/NDTTg dated 09 April 2007 issued by the Prime Minister on the solid

waste management.

- Decree No.29/2008/NDCP dated 14 March 2008 issued by the Government on industrial

zones, export processing zones and economic zones;

- Decree No.29/2011/NDCP dated 18 April 2011 issued by the Government on strategic

environmental assessment, environmental impact assessment, and environmental protection

commitments;

- Decision No.53/2004/QDTTg dated 08 April 2004 issued by the Prime Minister

promulgating the strategic orientation for sustainable development in Vietnam (Agenda 21);

- Decision No.81/2006/QDTTg dated 14 April 2006 issued by the Prime Minister on

approving the "National Strategy of environmental protection until 2010 with a vision to 2020

(NSEP)";

- Document No. 2003/TTg-CP by Prime Minister on the "Agreement of investment policy

Hoa Mac Industrial Park, Hanam province with an area of 203 ha and implementing this IP to

the list of priority industrial park that expected to new set in 2015 by Decision No.1107/QD-

TTG dated 21 August 2006 by the Prime Minister ".

- Decision No. 27/2004/QDBXD on 09 November 2004 issued by the Ministry of

Construction on approval TCXDVN 320 2004 "Hazardous waste landfill - Design Standards";

30

- Decision No.21/2005/QDBXD dated 22 July 2005 issued by Ministry of Construction on

promulgating regulations on the notation system drawings in the construction plans.

- Circular No.19/2008/TTBXD dated 20 November 2008 issued by the Ministry of

Construction on "guiding the formulation, appraisal, approval and management of

construction plan of the industrial zones and economic zones."

- Circular No.08/2009/TTBTNMT dated 15 July 2009 issued by the Ministry of Natural

Resources and Environment on environmental protection regulations of economic zones,

high-tech parks, the industrial zones and industrial clusters ;

- Circular No.01/2011/TTBXD dated 27 January 2011 issued by the Ministry of Construction

guiding the strategic environmental assessment;

- Circular No.26/2011/TTBTNMT dated 18 July 2011 issued by the Ministry of Natural

Resources and Environment on detailing a number of articles of Decree No. 29/2011/NDCP

of the Government on the strategic environmental assessment, environmental impact

assessment, environmental protection commitment.

- Circular No.04/2011/TTBTNMT dated 28 December 2011 issued by the Ministry of Natural

Resources and Environment on amending and supplementing some articles of

(2) Local Environmental Legislations

- Document No. 250/UBND-DN&XTDT dated 8 March 2007 by People’s Committees of

Hanam province on approving the policy "Investor and business building Hoa Mac Industrial

Zone Infrastructure of Hoa Phat construction and Urban Development Jsc ".

- Decision No. 232/QD-UBND dated 30 January 2008 by People’s Committees of Hanam

Province on approving "Detailed planning ratio of 1/500 Hoa Mac Industrial Park (Phase I),

Duy Tien district, Ha Nam province ".

- Decision No.1173/QD-UBND dated 19 September 2008 by People’s Committees of Hanam

Province on approving adjustments "Detailed planning ratio of 1/500 Hoa Mac Industrial

Park (Phase I), Duy Tien district, Hanam province".

- Decision No.878/QD-UBND dated 24 July 2008 by Peolple’s Committees Hanam Province

on "Land Acquisition and temporarily assigned to Hoa Mac Industrial Zone Devepment

Management Co.,Ltd for clearance of the service investment and business building

infrastructure Hoa Mac industrial Park - phase I, in Duy Tien district, Ha Nam province".

- Decision No.1805/QD-UBND dated 29 December 2009 by People’s Committees of Hanam

Province on "Land Acquisition assigned to Hoa Mac Industrial Zone Devepment

Management Co.,Ltd for clearance of the service investment and business building

infrastructure Hoa Mac industrial Park - phase I, in Duy Tien district, Ha Nam province".

31

- Decision No.1094/QD-UBND dated 01 September 2008 by People’s Committees of Hanam

province on "Approving report of environmental impact assessment of investment project and

business building industrial infrastructure Hoa Mac in Duy Tien district, Ha Nam province".

- Decision No.942/QD-UBND dated 11 August 2009 of People’s Committees of Hanam

Province on "Establishment of Hoa Mac Industrial Zone, Hanam Province".

- Delivery record of land in 5 May 2010 at Hoa Mac town and 8 September 2010 at Chau

Giang commune.

(3) Documents related to Component No 2 of the project of industrial pollution management

in the Dong Nai, Nhue Day river basins

- Decision No.1932/QD-BTNMT on 12 November 2012 on approving component No 2 -

Pilot investment loan to build the central wastewater treatment plants in industrial zones of

the project "Industrial Pollution Management in the Dong Nai, Nhue-Day river basins";

- Decision No.1953/QDBTNMT on 14 November 2012 on establishment of the Project

Management Board of Component No 2 - Pilot investment loan to build the central

wastewater treatment plants in the industrial zones of the project "Industrial Pollution

Management of Dong Nai, Nhue-Day river basins";

- Decision No.1196/QDBKHDT on 17 September 2012 of the Minister of Planning and

Investment on approving the feasibility study report on the project “Industrial Pollution

Management of the Dong Nai, Nhue-Day river basins”;

- Decision No.1403/QDBKHDT on 25 October 2012 on amending and supplementing a

number of articles of Decision No. 1196/QDBKHDT;

- Decision No.1205/QDBKHDT on 19 September 2012 on establishment of the Project

Steering Committee for the project “Industrial Pollution Management in the Dong Nai, Nhue-

Day river basins”

- Official Letter No. 13606/BTCQLN on 5 October 2012 on specific lending conditions for

the WB Project “Industrial Pollution Management”.

- Loan Agreement (VIPM Project) between the Socialist Republic of Vietnam and the

International Development Association on 24 September 2012 (No. 5175VN).

- Environment and Social Management Framework, The project “Industrial Pollution

Management in the Dong Nai, Nhue-Day river basins, 2012.

1.6.3. The environmental standards and regulaions

(1).Water Quality

- QCVN 08:2008/BTNMT - National technical regulation on surface water quality;

- QCVN 09:2008/BTNMT- National technical regulations on groundwater quality;

32

- QCVN 14:2008/BTNMT - National technical regulation on domestic wastewater quality;

- QCVN 40:2011/BTNMT- National technical regulations on industrial waste water;

(2). Air Quality

- QCVN 05:2008/BTNMT - Air Quality - National technical regulations on ambient air

quality ;

- QCVN 06:2008/BTNMT - Air quality - Allowable maximum concentration of toxic

substances in the ambient air.

(2).Soil Quality

QCVN 03:2008/BTNMT - National technical regulation on the permissible limits of heavy

metals in the soil;

(3).Solid Waste Management

- TCVN 6696:2009 - Solid waste – Sanitary Landfill- General requirements for the protection

of the environment;

- QCVN 07:2009/BTNMT - The national regulation on classification of hazardous waste;

- QCVN 25:2009/BTNMT - National technical regulation on wastewater leakage from solid

waste landfills;

(4).Noise and vibration

- QCVN 26:2010/BTNMT - National technical regulation on noise;

- QCVN 27:2010/BTNMT - National technical regulation on vibration.

(5).Safety and Occupational Health

Decision No 3733/2002/QD-BYT on 10 October 2002 about applications of 21 standards for

safety and health.

33

CHAPTER 2 CHARACTERISTICS OF THE PROJECT AREA

2.1. GENERAL CHARACTERISTICS OF THE PROJECT AREA

2.1.1. Natural characteristics

2.1.1.1. Topography, geology, climate

(1). Topography

Most of the site in Hoa Mac IZ is cultivated fields of the residents in the area. The terrain is

relatively flat. The area for sunken ponds and irrigation ditches for entire surrounding rice

fields is not large in the average height of +2.3 m. The terrain tends to slope from east to west.

Generally, ground level is relatively low so it is required to elevate the ground during the

construction process on basis of the height of NH38, from +3.8 m to +4.0 m.

(2). Geology

According to result of geological survey of work “CETP with capacity of 1,500 m3/day at

Hoa Mac IZ, Phase I, module 1”, the geology of the project site is as follows:

+ ) Layer 1: Gray-brown Clay

Layer 1 in all 3 drilled holes with the following depth and thickness:

Table 2-1. The depth and thickness of first layer at the drill-hole

Drill-hole number Depth distribution

Layer thickness (m) Layer top Layer bottom

LK1 0.0 0.6 0.6

LK2 0.0 1.2 1.2

LK3 0.0 0.9 0.9

In terms of geology, this layer is not meaningful so it is not required to sample during the

survey process.

+ ) Layer 2: Gray-brown, ash gray clay mud

The layer 2 is under the layer 1 in all 3 drilled holes with the depth and thickness are as

follows:

Table 2-2. The depth and thickness of second layer at the drill-hole

Drill-hole number Depth distribution Layer thickness

(m) Layer top Layer bottom

LK1 0.6 7.5 6.9

LK2 1.2 6.2 5.0

LK3 0.9 9.7 8.8

Average physical and mechanical characteristics are as follows:

Table 2-3. Synthetic table of mechanical and physical target of the second layer

No Target Symbol Unit Standard value

1 Particle

composition

(mm)

0.5 - 0.25

P %

-

0.25 - 0.1 1.0

0.1 - 0.05 30.3

0.05 - 0.01 30.3

0.01 - 0.005 14.3

< 0.005 24.0

34

2 Specific weight ∆ g/cm3 2.68

3 Natural humidity W0 % 54.6

4 Natural volume mass γW g/cm3 1.61

5 Dry volume mass γc g/cm3 1.045

6 Flow limit WL % 48.1

7 Soft limit Wp % 32.0

8 Soft index IS % 16.1

9 Thickness Ip % 1.40

10 Saturation G % 93.2

11 Porosity n % 61.0

12 Porous coefficient εo 1.567

13 Internal friction angle ϕ degree 3028

14 Cohesion C kG/cm2 0.088

15 Coefficient of compression and

subsidence

a1-2 cm2/kG 0.115

16 Total deformation modulus E1-2 kG/cm2 17

17 Convention capacity load RH kG/cm2 0.41

18 Average number of hammer

SPT/30cm

N 4

+ ) Layer 3: Ash gray, dark gray sandy sludge, interleaved clays, sometimes mixed with

organic matters.


follows:

Table 2-4. The depth and thickness of third layer at the drill-hole


Layer thickness (m) Top Layer Bottom Layer

LK1 7.5 15.0 7.5

LK2 6.2 17.3 11.1

LK3 9.7 18.5 8.8


Table 2-5. Synthetic table of mechanical and physical target of the third layer


1 Particle

composition

(mm)

0.5 - 0.25

P

%

1.0

0.25 - 0.1 16.7

0.1 - 0.05 35.0

0.05 - 0.01 26.0

0.01 - 0.005 11.0

< 0.005 9.3








35








subsidence

a1-2 cm2/kG 0.094




SPT/30cm

N 5

+ ) Layer 4: Gray-brown clay mud, ash gray, sometimes mixed with organic matters


follows:

Table 2-6. The depth and thickness of fourth layer at the drill-hole


Layer thickness (m) Top Layer Bottom Layer

LK1 15.0 29.5 14.5

LK2 17.3 29.2 11.9

LK3 18.5 31.8 13.3


Table 2-7. Synthetic table of mechanical and physical target of the fourth layer


1 Particle

composition

(mm)

0.5 - 0.25

P

%

-

0.25 - 0.1 0.5

0.1 - 0.05 30.0

0.05 - 0.01 37.3

0.01 - 0.005 12.2

< 0.005 20.0















subsidence

a1-2 cm2/kG

0.093

36




SPT/30cm

N 6

+ ) Layer 5: Gray yellow, gray hard plastic clay

The layer 5 is under the layer 4 in all 3 drilled holes. The thickness is not identified because

the surveyed holes end at the depth of this layer.

Physical and mechanical average of the strata as follows :

Table 2-8. Synthetic table of mechanical and physical target of the fifth layer


1 Particle

composition

(mm)

0.5 - 0.25

P

%

-

0.25 - 0.1 7.0

0.1 - 0.05 32.3

0.05 - 0.01 25.7

0.01 - 0.005 15.7

< 0.005 19.3















subsidence

a1-2 cm2/kG 0.041




SPT/30cm

N 16

Survey results showed that the geological conditions of the area is complex. There are 05

layers with different thickness, area and physical properties in the scope of the survey.

- Layer 1: Gray brown landfilling. So it is noted in design and construction.

- Layer 2: Gray-brown, ash gray clay mud appears in all holes RH= 0.41 kG/cm2, E1-2= 17

kG/cm2.

- Layer 3: Ash gray, dark gray sandy sludge, interleaved clays, sometimes mixed with

organic matters. This strata appears in all holes RH= 0.66 kG/cm2, E1-2= 25 kG/cm

2..

37

- Layer 4: Gray-brown clay mud, ash gray, sometimes mixed with organic matters. This

strata appears in all holes RH= 0.54 kG/cm2, E1-2= 19 kG/cm

2..

- Layer 5: Gray yellow, gray hard plastic clay. This strata appears in all holes RH= 1.27

kG/cm2, E1-2= 83 kG/cm

2.

Conclusions:

Hoa Mac IZ’s CETP may be placed on layer 5. However, it is required to stabilize the

foundation by prestressed concrete piles and application of suitable base countermeasures to

ensure quality work and achieve economic efficiency (these technical requirements are shown

in the Contract between the Investor and the Construction Contractor).

(3). Climate

The project site in particular and Ha Nam province in general have the tropical monsoon

climate with two main wind directions: Northeast and Southeast, 4 seasons with 4 types of

weather: Warm spring, hot summer, cool autumn and cold winter.

* Temperature

The average temperature in recent years changes insignificantly, from 23.2 to 24.55 . The

average temperature is shown in the following table :

Table 2-9. Average temperature in months and years (0C)

No Month

Year 2007 2008 2009 2010 2011 2012

1 January 16.5 14.9 15.5 17.7 16.8 17.1

2 February 21.3 13.2 22 21.5 20.8 20.5

3 March 20.9 20.6 20.6 21.6 21.2 20.8

4 April 22.8 24.2 24 13 22.1 23.2

5 May 26.4 26.8 26.4 28.5 27.2 27.8

6 June 29.8 28 30.2 30.6 29.5 28.9

7 July 29.9 29.2 29.4 30.3 29.8 29.5

8 August 28.5 28.5 29.3 27.8 28.9 28.4

9 September 26.6 27.5 28.3 28 27.8 28.1

10 October 24.5 26 26 24.9 24.2 26.1

11 November 20.7 21.3 21.3 21.8 23.5 23.2

12 December 20.1 17.9 19.2 19.3 17.2 18.9

Average 24.0 23.2 24.35 24.55 24.09 24.38

(Source: Statistical Yearbook of Hanam Province in 2012)

* Sunlight and radiation

Total minimal and maximal hours of sunshine at Ha Nam province in 2009 and 2010

were 1.146 hours and 1.426 hours, respectively. The sunshine hours in summer make up 82%

of that in the whole year and the months with the largest sunny hours are May, June, July,

August, September, November.

Solar radiation is an important factor directly affecting the thermal regime in the region,

affecting the dispersion and transformation of pollutants. Average daily radiation layer in Ha

Nam province is 100-120 Kcal/cm2. The months with the highest radiation is in summer (June

, August and September) and the lowest radiation in winter months.

38

Table 2-10. The hour number of sunshine in months

No Month

Year 2007 2008 2009 2010 2011 2012

1 January 63 64 96.4 33 11.1 1.9

2 February 46 27 79.0 90.6 37.3 17.9

3 March 9 58 44.1 59 16.8 20.5

4 April 83 71 77.2 58.6 61.2 105

5 May 146 155 117.6 139.1 159.7 167.2

6 June 232 101 183.9 170.8 151.2 110.8

7 July 234 128 153.7 211.0 170.4 168.2

8 August 126 126 204.2 123.9 177.9 168.5

9 September 126 110 138.6 142.5 109.4 129.4

10 October 89 75 115.4 116.1 65.4 113.1

11 November 91 128 138.7 91.7 98.3 105.6

12 December 32 103 77.8 93.1 73.6 45.7

Total 1277 1146 1426.6 1329.4 1132.3 1153.8


* Rainfall

The total average rainfall in 2012 is about 1.768 mm/year. It is divided into two distinct

seasons, wet and dry seasons. The wet season from May to October accounts for about 80 %

of the annual rainfall, which is concentrated in May, June, July, August, September, October

and November and the dry season from November to the following April. The average

rainfall is shown in the following table :

Table 2-11. Average volume of rainfall in months and years (mm)

No Month

Year 2007 2008 2009 2010 2011 2012

1 January 1.6 37 10.3 106.4 13.3 39.9

2 February 59.6 14 9.9 8.7 27.9 29.5

3 March 47.9 23 55.5 17.4 95.8 24.3

4 April 51.7 34 88.0 59.9 52.4 60.9

5 May 329.5 260 347.4 176.9 192.8 200.5

6 June 53.0 372 86.5 213.7 325.2 126.3

7 July 269.3 231 509.5 334.2 223.6 253.7

8 August 228.9 271 115.1 429.5 291.7 251

9 September 231.8 352 285.5 209.7 405.9 382.9

10 October 285.4 323 91.1 136.8 135.4 145.6

11 November 11.6 199 6.7 9.9 70.0 182.9

12 December 11.8 22 32.1 59.0 12.7 71.5

Total 1582.1 2138 1637.6 1762.1 1846.7 1768.8


* Humidity

In general, annual average air moisture in Ha Nam province is relatively large, ranging

from 81.3 to 83.5 %, depending on rainfall so there are 2 periods in one year: The period with

high humidity and that with low humidity. The average humidity is shown in the following

table:

39

Table 2-12. The average humidity in months and years (%)

No Month

Year 2007 2008 2009 2010 2011 2012

1 January 72 85 76 84 78 79

2 February 87 77 88 83 85 82

3 March 92 86 87 82 84 81

4 April 85 87 88 90 89 87

5 May 83 83 87 86 84 82

6 June 80 86 76 76 82 85

7 July 80 81 82 80 81 86

8 August 86 86 81 88 83 86

9 September 85 86 83 86 85 83

10 October 83 84 81 76 82 81

11 November 73 78 71 75 71 74

12 December 83 75 78 78 76 78

Average 82.4 82.8 81.5 82 81.7 82


* Wind speed and wind direction

In Ha Nam province, there are two main wind directions in one year. There are north wind

and northeast wind in winter from November to next April. There are south wind and

southeast wind in summer from April to August. Ha Nam province is impacted by storms

similarly to the Northern plains.

The average annual wind speed is 2.5 m/s.

* The types of abnormal weather

- The Northeast monsoon

The Northeast monsoon is the high pressure gas which is formed from Asia continent, then to

the North Vietnam via Hoa Nam (China) toward the northeast direction from September to

May. The winds are more and stronger in mid-winter than that in early and late winter. Each

Northeast monsoon period impacts the local weather from 3 to 10 days, which is showned by

sudden lower air temperature and “being tropicalized” to warmer. Some Northeast monsoon

periods in early or late winter face hot moist tropical weather,causing weather disturbance

such as creation of storms, tornados, hails to destruct the localities where they swept through.

- Hoarfrost

It often appears in December and next January after end of the strong northeast monsoon

periods, sunny weather, cloudless nights, calm winds, causing strong ground radiation. Water

vapor in the air closed to the ground condenses in the form of salt crystals to cause cold

weather which is so-called hoarfrost. Hoarfrost can suspend the botanic metabolism, freezing

the tissues to cause the death of tropical mollusca, damaging the respiratory system of humans

and animals .

Conclusions:

The project site is located in the tropical monsoon climate with many varied weather patterns

in different seasons. This type of weather will not affect much to the industrial production

operations of tenants in the IZ.

40

2.1.2. Socio-economic conditions

2.1.2.1. Socio-economic conditions of Hoa Mac Town in first 6 months of 2013

Hoa Mac town is Duy Tien medium district so it is quite favorable in terms of traffic and

socio- economic development.

(1). Agricultural production

Regarding cultivation: The total cultivating area in winter-spring crops is 164 hectares,

making up 100% of the assigned schedule, in which the area for rice growing is 115 hectares

and crop area is 49 hectares. Rice yield reaches 59.1 quintals / hectare. Cereal output is 366

tons.

Regarding husbandry: Husbandary has developed stably. The prevention of disease such as

epidemic disease for livestock and poultry are often interested. According to survey data, in

the entire town:

− Pigs: 854;

− Cows: 8;

− Poultry: about 14,250.

(2). Industrial production - handicraft industry - Civil Construction - Commercial Services

In terms of industry and handicraft: Total production value in the last 6 months is estimated to

be VND 10.2 billion (making up 54 % of the plan). The industries are further maintained and

developed namely production of building materials, furniture, welding, garment and textile,

etc.

In terms of civil construction: Total investment in civil construction in first 6 months of 2013

is estimated to be VND 2 billion. In the first 6 months, it has completed adjacent lines and

yard to the Secondary School and functional office of the Primary School. It has concretized

village roads, alleys under the Province’s policy on cement support.

In terms of commercial services: Up to now, the number of households participating in

commerce services throughout Hoa Mac town are over 742 households, which is 6

households larger than that in 2012. Hoa Mac market’s operations are stable to contribute

significantly to the locality’s budget

(3). Regarding the Traffic – Irrigation system

Hoa Mac People’s Committee established the Steering Committee for Flood and Storm

Control to construct plans, specific schedules to each village, street, to preare sufficient

materials, facilities and personnel to readily respond in emergent cases.

To regularly coordinate with the inter-disciplinary agencies to organize to clear traffic safety

corridor in the region.

(4). Regarding socio-culture issues

* Education and training

Kindergartens: The school is ranked the 11th in the district after the academic year of 2012 –

2013. There are 48 5- year-children in the primary education level in the town.

Primary schools: Number moved students make up 100 %. 31 teachers and 455 students were

rewarded and complimented in the end school year 2012 – 2013. The primary education is

ranked the first in the district

41

Secondary Schools: Number moved students make up 100 %, in which, excelent students

(3.75%), merit (49.44%), satifactory (45.32%) and weak (1.5%). Common secondary

education quality is ranked the 6th in the district

* Health care - population

In the first 6 months of 2013, the local Medical Center organized to provide health care

services to 1,500 turns of patients, to offer oral anthelmintics to 470 infants and vitamin A to

360 infants in the age of 6 – 36 months.

The rate of natural population growth in the first 6 months is 0.27 % . The whole town has

actively implemented a plan on construction and development the Fund for Children

Protection; Action Plan for Children in 2013.

2.1.2.2. Socio-economic conditions of Chau Giang Commune in first 6 months of 2013


+) Cultivation:

In the winter- spring of 2013, the commune has planted 1,815 hectares, in which:

- The area for rice growing is 1,640 hectares

- The area for maize growing is 150 hectares

- The area for cucumber growing is 8 hectares

- The area for beans and nut growing is 25 hectares

- The area for soy growing is 11 hectares

The average rice yield reaches 66.3 quintals / hectare. Total food productivity is 4630.4 tons

(accounting for 55.78 % of the plan in the year)

Total crop value in the first six months of 2013 is VND 40.5 billion, increasing by 20.9 %

compared to the same period in 2012.

+) Husbandry:

By 30th

June 2013, total pigs are 3,500, reducing by 760 pigs in comparison with that in the

same period, buffaloes are 275, increasing by 15. Poultry is 85,000, increasing by 30,000 in

comparison with that in the same period

Aquaculture has developed in low-lying fields and 455- hectare- ponds in the form of a farm.

Many households’ income is over VND 100 million / hectare / year. Fishery output is 310

tons.

Estimated income from breeding and aquaculture is VND 34.5 billion.

(2). Services

In the first 6 months of 2013, revenues from industrial production, handicraft, and

construction is estimated to be VND 60.6 billion, making up 52.3 % of the plan

Revenue from commercial services is VND 58.2 billion, making up 57.3 % of the plan, in

which:

- Revenue from services: is estimated to be VND 34 billion;

- Income from labor export: VND 9 billion;

- Revenue from social insurance and pension policies for dedicated people and social

welfare beneficiary objects: VND 13.8 billion;

42

- Revenue from salary allowances of officers: VND 1.4 billion.

(3). Socio-culture, health care, education

+) Socio-culture

By June 2013, Chau Giang commune has 15,354 inhabitants, the rate of natural population

growth is 0.4 %, reducing by 0.2 %; 3rd

child rate reduces by 1.5 %.

Communicating and cultural activities are well organized, including to complete 59 wall-

mounted slogans, 65 turns of banners, to hang 2,300 turns of flags, to propagandize in large

events; to prevent social evils and to propagandize to construct the new urban areas; to

intensify management of cultural activitiesto organize cultural exchange, art shows, sport

events, the joining-up songs of 2013, and to organize to receive the honor title of National

Relics for Dinh Dong Ngoai;

+) Health care:

In the first 6 months of 2013, the Medical Station has organized to provide examination and

treatment services to 8,212 turns of patients, in which 2,980 turns of patients are the health

insurance beneficiary objects. For example, to supply VND 80 million for drug.

Number of children having vitamin A is 856 children, the percentage of malnourished

children under 5 years old is 14.9 %, reducing by 0.5 % compared with that in 2012. The

results are medicine are distributed to 74 psychiatric, neurological patients, 5 TB patients, 1

leprosy victim; to check and test 23 food business facilities in 3 inspection times; to actively

propagandize prevention of malnutrition, anemia prevention in association with the provincial

Eye Hospital; to provide examination services to 55 patients, to complete cataract surgeries to

5 patients and Retina surgery to 5 other patients.

+) Education:

In the academic year of 2012 – 2013, A Primary School has 332 students. B Elementary

School has 541 students and Secondary School has 548 students.

The education has made positive changes in the quality of teaching and learning. A number of

attendants are remained in the year, making up 100%; secondary school graduates account for

100%, in which the excellent and merit rate accounts for 43.6 %.

2.1.2.3. Socio-economic conditions of Trac Van Commune in 2012


+ Cultivation

The area for rice growing was 231 hectares, making up 100% of the plan. Rice

productivity reached 121 kg /hectare, making up 101 % of the plan and 94.3% in the same

period. Rice output reached 2,795 tons.

Table 2-13. Plants in rich-soil

No Crops Area (ha)

Productivity (quintal/ha)

Yield (ton)

1 Corn in Spring Corp 120 50 600

2 Peanut in Spring Corp 20 70 140

3 Bean in Spring Corp 1 27 2.7

4 Corn in Summer Corp 15 60 90

5 Soybean in Summer Corp 65 27 175.5

6 Bean in Summer Corp 50 22 110

7 Corn in Winter Corp 125 50 625

43

Cultivation value was VND 35 billion, four hundred and forty six million, two

thousand dong.

+ Husbandry

Husbandary was relatively stable. Total pigs were 16,098 (in which sows: 723, sucking pigs:

9,639 and porker: 5736), buffaloes, cows and calves were 480. Poultry: 110,091. In addition,

the local people keep honey-bees. The commune has 240 bee herds with the capacity of 3,120

kg. Alquaculture is effective with the capacity of 224 tons.

Livestock production value reached VND fifty two billion, three hundred and eighty nine

million dong.

(2). Industry - Handicraft Industry and Construction

Estimated production value reached VND 71,456,700,000. The main products are silk

weaving, construction, furniture, mechanics, welding, textile and garments, etc.

The commune has 254 builders, 31 silk weavers, 81 garment workers, 91 carpenters, etc.

Total employeed people in the commune is 1,773 out of 5,182 people.

(3). Irrigation

Irrigation and flood control are checked, instructed and directed to maintain and correct key

irrigation works. In addition, the works for agricultural production are improved such as

restoration and dredging 9,000 m3 of ditches; excavation and embankment of 400 m

3.

(4). Culture – Society and education

The commune has 8,409 heads and 2,536 households by December 2012, of which emigrants

are 49; immigrants: 56, birth rate: 168; dealth rate: 73 and marriage: 72 couples.

The local cultural works for activities of the residential communities are operated more

effectively. 8 out of 8 villages remain the title of cultural villages. There are 2,062 standard

cultural families in the commune.

Compulsory primary education level 2 is completed in the commune and it is universalizing

pre-school education to 5-year –old children. There are 03 standard national schools in the

commune. The commune has won 04 prizes in the province level excellent –grade- 5 pupil

contests

It has effectively implemented disease prevention and health care to the local people via

provision of examination and treatment to 8,107 turns of patients, making up 103% of the

plan, in which the patients in the health insurance policies are 4,293 turns of patients.

2.1.2.4. Social-economic conditions of Duy Tien District

First 6 months of 2013

Duy Tien District is located in the North of Ha Nam province. It is the gateway of southern

Hanoi and 20 km from Phu Ly City. The natural area is 13,765.80 hectares, equal to 16.01%

of the province. There are 19 communes, 2 towns, and population of over 130 thousand

people. There are so many key roads, railways, roadways, waterway so passing the district to

bring the favorable conditions in trade and economic development

(1). Agricultural productivity– rural areas

Production in winter crops: The district’s cultivating area is 6637.5 hectares, in which:

- The area for winter-spring rice: 5,778 hectares

44

- The area for spring crops: 859 hectares

Expected Yield: Rice (67.9 kg / hectare), corn (59.9 kg / hectare); peanuts (27,6 kg / hectare).

Cereal output is estimated to be 43,400 tons

Breeding is stable and epidemic diseases do not happen. In detail, the district has:

- Pigs: 45,110;

- Cows and buffaloes: 4,810, including 275 dairy cows;

- Poultry: 1.4 million.

The district has 850 hectares for aquaculture with the estimated output of 1,220 tons.

(2). Industry – Handicraft- Construction

Growth of industry – Handicraft in the district is good, reaching VND 2,710 billion,

increasing by 34.49% in comparison with that in the same period.

The district is taking most of the investments from budgets and actively mobilize resources

for the construction and renovation and upgrading of the engineering infrastructure.

Currently, the district has started construction of some projects namely Lang Giang Temple

Spiritual Tourism Project; Working House of the District, Working House of the Department

of Finance & Accounting; Headquarter of Bach Thuong Commune People’s Committee. In

addition, it focuses on strengthening construction of Projects: Hoa Mac – Chau Giang – Moc

Bac Road, Access Road to the center of communes, towns; Stabilized System of Irrigation,

etc)

(3). Natural resources and environment

To instruct functional departments and communes, towns to complete the construction plans

of dump sites to facilitate transportation to the plant at Duy Minh commune for handling. To

regularly check and remind environmental hygiene and protection in the business units and in

the residential areas.

(4). Social and cultural fields

There are 142 out of 156 villages, cities holding the honor title of cultural villages, streets,

making up 91%. A number of cultural families are 31,955 out of 34,680, accounting for 92%.

Disease prevention and food safety and hygiene control works have been actively

implemented. In the first 6 months of 2013, there is no epidemic disease or food poisoning

cases in the district. Vaccination work is implemented seriously. 100% of the children in the

age of 6 – 36 months take A vitamin under the national policy.

To timely implement social welfare policies. To offer 277 tons of rice to the poor and near-

poor households on the occasions of Tet holidays of Snake year. To exempt electric bill in the

1st quarter to poor families, about VND 276,570,000/ 3,037 families.

B. Development orientations of Duy Tien District in period of 2011 – 2015

(5). Orientations

To enhance leadership skills and capacity of the Party’s organizations.; To firmly and

transparently build the political system from district to grassroots level. To promote

democracy and unity strength of the political system; To intensify the compaign “Study and

follow the moral example of Ho Chi Minh"; To speed up economic development in a

sustainable manner; to combine economic development with socio-cultural promotion,

environmental protection, and improvement of local people’s life; To construct the high

quality workforce to facilitate the economic shifting process and the process of industrial

45

district construction; To mobilize human resources to build economic infrastructure and civil

works; To strictly combine socio-economic development with national defense – security

control; to keep politics, public order and safety sustainable.

(6). Main targets

Gross domestic product per capita in the district increases by 15.15 % / year.

GDP average per capita in 2015 is expected to be VND 42.28 million/ year

Economic restructure by 2015:

+ Industry - construction: 57.75%;

+ Services: 30.75%;

+ Agriculture, forestry and fisheries: 11.5%;

Total food production per capita: 68,686 tonnes / year.

The average production value of agriculture, forestry, fisheries increases by 1.8 % / year.

Value of industry – handicraft output increases by 24.4%/ year in average.

Total retail sales of social consumer goods and services increase by 13.15 % / year in average.

The export value increases by 12.5 % / year in average.

Total payment to the State’s budget increases by 15% / year in average

Number of people with new employment: 3,440 people/ year in average

The natural population growth rate by 2015 is 0.75 %. The birth rate reduces by 0.12%

The poor households are expected to reduce by 6% by 2015.

The rate of malnourished under-5-year infants are expected to reduce by 16% by 2015

The rate of households approaching freshwater by 2015 is expected to make up 91%

Percentage of trained employees by 2015 is expected to make up 40 – 45%

Rate of new urban communes by 2015 is expected to make up 20%

Rate of the Party’s strong and transparent committees is over 85%

(7). Main tasks

+) Industry – Handicraft development

High-speed and sustainable growth is the central task.

It is expected to increase the industry, handicraft output value by 24.4%/ year. To plan

and expand Izs, handicraft industry of the district; to focus on completion of the engineering

infrastructrue of Hoa Mac IZ. To make efforts to fill the area of Dong Van II IZ, Cau Giat

Handicraft Industrial Cluster. To strictly punish the projects which are issued with investment

certificate but they do not implement the business and production operations under the

regulations and laws. To improve the efficiency of Izs in the locality. To attract large

enterprieses, to use modern, energy saving, environmental friendly technologies; to priotize to

invest in high-technology industrial fields, agro-processing, food, etc. To do training and

selection of workers well, to secure to provide welfare policies to workers, etc to priotize to

recruit local workers to work for the tenants.

46

To continue to expand scope of the existing trade villages, to develop new occupations with

high income. To improve the quality, diversify handicraft products; to pay more attentions to

key products with high export value namely rattan, handicraft goods, etc.

+) Development of agricultural commodities; restructuring of the agricultural sector by

increasing the proportion of livestock . Promoting new rural construction

To develop agricultural commodities with high productivity, quality and efficiency. To

actively restructure of agricultural sector by increasing the proportion of livestock. To make

the efforts to develop the agricultural, forestry, fishery values to make up 55% of total

agricultural value. Average agricultural, forestry, fishery value increases by 1.8%/ year in

average.

A positive internal restructuring of the agricultural sector. Striving value livestock industry,

aquaculture, 55 % of the total agricultural value. The value of average increase of 1.8 % /

year.

To promote application of advanced science, technology, especially biotechnology in

farming. To improve rice cultivation, crop restructure, variety restructure to make up over 55

% of hybrid rice, 30% of high quality rice; to enhance winter crop output and land use factor

by 2.65 times. To generalize and expand polyculture model; models of economic households;

patterns of farm economcics with the income of about VND 100 million / hectares or more.

To issue the plans on construction the specialized areas for cultivation, to stimulate to grow

saplings with high economic value or in association with processing, business and export. To

actively execute natural disasters prevention works to minimize possible loss and damage. To

improve the State’s cooperatives attached to the agricultural products. To encourage to

establish specialized cooperatives. To develop strongly centralized husbandary on large scale.

To secure to control epidemic diseases and protect environment. To control veterinary works,

killing and transporting cattle and poultry well. To make the best efforts in producing over

13,550 tons of meat of livestocks / year in average.

To effectively implement the Plan on Pilot Construction of New Urban Model at Doi Son

Commune. To make the efforts in facilitating 5 out of 21 communes and towns to reach the

title of new urban criteria.

Implement effective pilot scheme to build a new rural model in Doi Son commune . Striving

to 2015, with a 5/21 communes and towns reaching new rural criteria.

+) Faster development of trade, services and tourism

To make the best efforts to increase total retail sales of social consumer services by 13.15%/

year in average. To invest, upgrade urban markets, to improve and construct Hoa Mac, Dong

Van markets to become center of commerce in the district. To promote trade in various forms;

to search, expand the markets to consume agricultural and aquacultural products. To pay

more attentions to exploit export markets for advantaged tradditional goods, especially

agricultural products, handicraft goods. To expand and improve the quality of services namely

transport, festival tourism, telecommunications, especially services for productions and urban

living activities. To develop legal consultancy services, insurance, education, health care,

culture, communication and sport. To pay attention to develop high-quality services to better

meet the development demands of the district.

To invest and improve the quality of operations in tourist places namely Doi Son Ploughing

Festival, Doi Son Long Pagado Festival, Lang Giang Temple, etc to make the deep

impressions in the visitors’ mind and to develop the local services at the same time.

47

To enhance investment in attractions : Doi Son charged festival , festivals Long Doi Son

Pagoda , Temple Lang Giang ..., creating deep imprint for tourists to visit in parallel with the

development of local services.

Conclusions:

Generally, the life of local people in the Project site has been much interested by the local

goverment. The policies on social welfare, health care, education and vocational development

are always practical, securing the living quality of local people. The agriculture and handicraft

industries are restructured to ensure that the local people could benefit from them.. Hoa Mac

IZ may, in its favorable location, help increase the the revenue of local area and create

employment for local peoplein the district.

2.2. CHARACTERISTICS OF THE RECEIVING RESOURCE

2.2.1. WW receiving place

WW treated by Hoa Mac IZ’s CETP flows to Giat River to Chau Giang river and finally

further to Red River.

2.2.2. Natural features

2.2.2.1. Hydrological characteristics of receiving resource

Hydrological regime is varied with dense river network. There are 4 surrounding major rivers

namely Red River, Chau Giang River, Nhue River and Duy Tien River. The water resources

are abundant, easily exploited, and sufficient for local production and living demands.

Mac Hoa IZ is directly affected by hydrology of Chau Giang and Giat Rivers. The hydrology

mechanism of the rivers is summarized as follows:

- Chau Giang River: It is originated in Ha Nam Territory. At Tien Phong (Duy Tien),

Chau Giang River is divided into two branches, of which one branch is the separator between

Ly Nhan and Binh Luc Districts and one branch is the separator between Duy Tien and Binh

Luc Districts. Chau Giang River at Ha Nam Province is 58.6 km long. Average flow rate in

dry season and wet season is 5 – 10 m3/s and 60 m

3/s, respectively.

- Giat River: Giat River receives treated WW directly from Hoa Mac IZ. The average

flow rate of the river is 22.6 m3/s.

2.2.2.2. Aquatic environment

Giat river and Chau Giang River are mainly for irrigation purposes in agriculture so the

aquatic environment is less diversified.

Regarding aquatic plants: Basically, there are few aquatic plants, sometime, locally appear in

small amounts of algae in the water

About organisms: they are mainly available fishes namely anabas, sailfish, hemicultur,

shrimp, crabs, snails, etc. In addition, there are limited number of large fishes such as carps,

major carps, etc. Due to heavy rain, fishes escape from surrounding aquaculture ponds.

Generally, natural fishes on Giat river and Chau Giang river are limited in quantity and less

diversified in types.

2.3. SUMMARY OF THE EXISTING STATE OF THE ENVIRONMENT AT THE

PROJECT AREA

2.3.1. Air

The air environment monitoring results in Hoa Mac IZ is displayed in the below table:

48

Table 2-14. Air quality results in IZ (10th

December 2012)

Location of Sample Concentration (mg/m3) Symbol

CO SO2 NO2

Hoa Mac Bridge nearby IZ

0.193 0.154 0.123 K1

Entrance in front of IZMB’s office 0.126 0.11 0.06 K2

Giat bridgehead 0.128 0.05 0.064 K3

At the end of IZ (in Chuyen Thien village, Chau

Giang commune) 0.118 0.072 0.05 K4

Internal road that is far 650 meter from the IZ port

northward 0.131 0.053 0.03 K5

Internal road that is far 90 meter from Dong Doai

cemetery northward 0.114 0.085 0.064 K6

At CETP 0.45 0.124 0.13 K7

QCVN 05-06:2009/BTNMT (1 hour for average) 30 0.35 0.2

Note:

QCVN 05:2009/BTNMT: National technical regulation on ambient air quality.

QCVN 06:2009/BTNMT: National technical regulation on hazardous substances in

ambient air.

Table 2-15. Results of dust, noise and microclimate in some location in IZ (10th

December

2012)

Symbol Location of

Sample

Noise

(dBA)

Dust

(mg/m3)

Tempe

rature

(oC)

Humidit

y

(%)

Wind

Direction

Wind

Velocity

(m/s)

A1

Hoa Mac

bridgehead

nearby IZ

78 0.355 32.9 78.1 South-

east 0.4

A2 Entrance in front

of IZMB’s office 85 1.99 32.4 73.6

South-

east 0.8

A3 Giat bridgehead

77 0.67 33.1 76.9 South-

east 0.51

A4

At the end of IZ

(in Chuyen

Thien village,

Chau Giang

commune)

57 0.145 33.5 66.4 South-

east 0.15

A5

Internal road that

is far 650 meter

from the IZ port

northward

76 0.193 32.8 72.1 South-

east 0.5

A6

Internal road that

is far 120 meter

from Dong Doai

cemetery

northward

83 0.309 31.9 77.8 South-

east 0.75

A7

T-junction

nearby PVC-

ME1 Company

84 0.189 32.1 74.0 South-

east 0.7

49

Symbol Location of

Sample

Noise

(dBA)

Dust

(mg/m3)

Tempe

rature

(oC)

Humidit

y

(%)

Wind

Direction

Wind

Velocity

(m/s)

Limit 70 (*) 0.3(**) -

Note:

(*) QCVN 26:2010/BTNMT: National technical regulation on noise.

(**)QCVN 05:2009/BTNMT: National technical regulation on ambient air quality.

Comment:

The monitoring result shows that the ambient air quality in Hoa Mac IZ is quite good, much

lower than the permited standard.

2.3.2. Soil

The monitoring result shows that the soil quality in the Project area on 10th

December 2013 is

shown in below table:

50

Table 2-16. Soil quality (10th

December 2013)

Parameter

Result

Pb Cd Ni Mn Cu P2O5 N K2O Fe Al3+ Methyl

Parathion

Total

DDT pHkcl

Unit mg/kg % mg/100g ug/kg

Sample

symbol

D1 0.8 0.4 0.07 42.17 14.21 0.06 1.22 1.04 139 0.55 0.002 ND 2.50

D2 0.9 0.18 0.10 33.36 5.53 0.25 0.17 0.43 92.54 2.02 0.001 ND 2.34

D3 0.99 0.28 0.13 51.53 8.26 0.44 0.15 0.92 121.3 0.54 0.002 ND 1.05

D4 0.71 0.11 0.124 40.5 13.7 0.19 0.11 0.64 189.7 1.07 0.001 ND 2.21

QCVN

15:2008/BTNMT - - - - - - - - - - 0.01 0,01

ND

QCVN

03:2008/BTNMT 70 2 - 50 - - - - - - - -

TCVN 373:2004 - - 0.141 - - - - - - - - - -

TCVN 7374:2004 - - - - - 1.05 - - - - - - -

TCVN 7375:2004 - - - - - - - 1.05 - - - - -

TCVN 7377:2004 - - - - - - - - - - - - 4.18

51

Note:

ND: Not detected

D1: Soil position is far 150 meter from IZ’s entrance

D2: Farm land position in IZ is far 25 meter from Giat Bridge

D3: Farm land position in IZ is far 7 meter from internal road

D4: Soil position on IZ is far 400 m Southward from Dong Doai cemetery

QCVN 15:2008/BTNMT: National technical regulation on the pesticide residuals in the soils.

QCVN 03: 2008/BTNMT: National technical regulation on the allowable limits of heavy

metal in the soils

TCVN 7373:2004: Soils quality. Index values of total nitrogen content in the soil of Vietnam.

TCVN 7374:2004: Soils quality Index values of total phosphorus content in the soil of

Vietnam.

TCVN 7375:2004: Soils quality Index values of total Potassium content in the soil of Vietnam

TCVN 7377:2004: Soils quality – pH value index in the soil of Vietnam

Comment:

The soil quality analysis results show that concentration of heavy metals is in the limit

ranges. Generally, soil quality in Hoa Mac IZ has not been polluted. The value and content of

substances are suitable to the prescribed standards.

2.3.3. Groundwater environment

The groundwater quality analysis result in the Project site on 10th December 2013 has been

shown in detail in below table:

Table 2-17. Results of groundwater quality

No Parameter Unit Concentration QCVN

09:2008/BTNMT NN1 NN2

1 pH - 7.4 7.3 5.5 – 8.5

2 SS mg/l 517 518 1500

3 Hardness mg/l 336 345 500

4 COD mg/l 13 14 4

5 Ammonium mg/l 8.8 16.6 0.1

6 Nitrate mg/l 3.4 2.9 15

7 Nitrites mg/l 0.03 0.01 1.0

8 Fe mg/l 0.08 0.12 5.0

9 Pb mg/l ND ND 0.01

10 Mn mg/l 0.15 0.17 0.5

11 As mg/l ND ND 0.05

12 Hg mg/l ND ND 0.001

13 Cl- mg/l 158 153 250

14 Phenol mg/l ND ND 0.001

15 Coliform MPN/100ml 0 0 3

Note:

QCVN 09:2008/BTNMT: National technical regulation on groundwater.

52

ND: Not detected.

NN1: Groundwater at the wells of Nghiem Viet Cuong house, Dong vilage, Chau

Giang commune, Duy Tien district, Hanam province (2013, July 01).

NN2: Groundwater at the wells of Nghiem Viet Cuong house, Dong vilage, Chau

Giang commune, Duy Tien district, Hanam province (2013, July 02).

Comment:

Above table shows that most of the surveyed indexes are in the allowed limit under the

National Regulation QCVN 09:2008/BTNMT. 2 out of 15 indexes exceed the permissible

limit, which are COD and Ammonium, in which COD is 10 times higher and Ammonium is

88-166 times higher.

2.3.4. Surface water

The surface water quality analysis result on 10th December 2013 has been shown in detail in

below table:

53

Table 2-18. Results of surface water

No Parameter Unit

Results QCVN

08:2008

(Column B1) M1 M2 M3 M4 M5 M6 M7 M8 M9

1 Temperature oC 30.5 30.6 30.8 30.4 30.6 30.3 30.6 30.4 29.5 -

2 pH - 7.62 7.35 7.23 7.73 7.42 7.28 7.58 7.88 7.62 5.5 – 9

3 TSS mg/l 11.5 16 12 6.5 21 28 15 28 15.8 50

4 Hardness mg/l 89.6 86.5 112.3 96.8 128.4 152.6 85.8 92.5 87.2 -

5

Total

dissolved

solid

mg/l 101 94 136 100 196 185 118 105 89 -

6 PO43-

mg/l 0.15 0.12 0.06 0.07 0.37 0.14 0.12 0.07 0.12 0.3

7 S2-

mg/l <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 -

8 SO42-

mg/l 18.5 19.55 40.76 28.3 38.57 48.29 30.62 38.55 21.25 -

9 DO mg/l 5.12 4.63 6.05 5.14 6.21 6.35 5.88 6.41 5.85 ≥4

10 COD mg/l 3.26 8.0 22 17.01 21 24 25 16 2.86 30

11 BOD5 mg/l 1.67 3.8 12.6 6.38 10.2 12.8 10.0 4.2 1.55 15

12 As mg/l 0.002 0.0013 0.0014 0.0015 0.0028 0.0033 0.0021 0.0017 0.002 0.05

13 Cd mg/l 0.0002 0.0004 0.0003 0.0003 0.0003 0.0002 0.0002 0.0004 0.0002 0.01

14 Cu mg/l 0.003 0.004 0.005 <0.001 <0.001 0.002 <0.001 0.005 <0.001 0.5

15 Pb mg/l 0.003 0.003 0.006 0.002 0.002 0.003 0.002 0.004 0.002 0.05

16 Cr mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.5

17 Hg mg/l 0.0007 0.0006 0.0006 0.0007 0.0006 0.0007 0.0006 0.0006 0.0005 0.001

18 Zn mg/l 0.562 0.608 0.624 0.529 0.616 0.513 0.481 0.586 0.465 1.5

19 Mn mg/l 0.029 0.024 0.021 0.026 0.028 0.041 0.027 0.038 0.018 -

20 Si mg/l 0.008 0.009 0.006 0.008 0.005 0.007 0.009 0.006 0.005 -

21 Se mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 -

22 Fe mg/l 0.256 0.083 0.205 0.165 0.420 0.478 0.324 0.224 0.068 1.5

23 NO3-_N mg/l 0.13 0.26 0.18 0.17 0.17 0.25 0.19 0.32 0.015 10

24 NO2-_N mg/l <0.01 <0.01 0.03 <0.01 <0.01 0.02 0.01 <0.01 <0.01 0.04

25 NH4+_N mg/l 0.017 0.014 0.012 0.012 0.086 2.563 2.393 0.942 0.008 0.5

54

No Parameter Unit

Results QCVN

08:2008

(Column B1) M1 M2 M3 M4 M5 M6 M7 M8 M9

26 CN- mg/l <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.02

27 Phenol mg/l <0.001 0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.01

28 NaCl mg/l 15.97 19.52 15.97 19.52 298.20 15.97 14.20 15.97 13.86 600

29 F- mg/l 0.19 0.13 0.22 0.10 0.23 0.51 0.31 0.81 0.08 1.5

30 E.Coli MPN/100ml 13 9 43 39 95 43 75 39 8 100

31 Coliform 230 110 430 290 140 430 150 210 120 7500

Note:

QCVN 08:2008/BTNMT: National technical regulation on surface water

M1: Ditch nearby sewer of Hoa Mac

M2: Open ditch in IZ

M3: At the end of IZ (Chuyen Thien village)

M4: Pond’s water nearby IZ

M5: Water of

M6: Water of Giat River at Lat Ha vilage, Trac Van commune

M7: Water of Giat River at position nearby IZ

M8: Water at internal farm-ditch nearby intersection D2N3

M9: Water of Chau Giang river at section of Giat River flowing into

Comment:

The above result shows that the surface water quality surrounding the project area is quite good. The analyzed indexes are lower than required

ones under the National Regulation QCVN 08:2008/BTNMT

55

CHAPTER 3 CHAPTER 3. ANALYSIS OF PROJECT ALTERNATIVES

3.1. CRITERIA FOR SELECTING ALTERNATIVES

The alternatives must secure the efficiency of wastewater treatment under the Regulation

40:2011/BTNMT, Column A.

Selection of alternatives must be in the principle of reasonable investment and low operating

costs.

Locations of the discharging outlet must meet the drainage demands of the CETP and minimize

impacts on the environment and life of local people surrounding the outlet.

Hazardous sludge from the CETP must be treated correctly under the procedure on HW treatment

to prevent from negative impacts.

3.2. WASTEWATER TREATMENT TECHNOLOGY

After consulting the experts in WW treatment, analysis of influent, Hoa Mac IZ Management

Board (IZMB) decides to select feasible Aerotank Technology as the alternative of SBR-based

Effluent Treatment Technology presented in Item 1.5.2.2, this Report.

3.2.1. Aerotank (AAO) Technology is described as follows:

AAO technology-based effluent treatment procedure of the Plant consists of 02 below steps:

Figure 3-1. Diagram of WW treatment technology by biological method

- Step 1: Mechanical treatment

Receiving compartment functions to distribute WW to the plant and partly separate raw residues.

Sand sedimentation tank is to remove most of sand and dirts with relatively large size from the

effluent meanwhile organic SS are not settled here. Water flow and speed are revised suitably as

being distributed to sand sedimentation tank via gate. Sand sedimentation tank is small in size

and located in the highest position compared to the other tanks to use the gravity method for

automatically flowing. Sand at the tank bottom is discharged to the sludge compressor tank via

submersible pump placed in the tank. Water from sand sedimentation tank self flows to

equalization tank.

56

Equalization tank is aimed at stablizing the flow and concentrations of pollutants in WW. The

tank bottom is arranged with system of gas distribution plates to mix and stir WW equally in all

points and to supply a part of oxygen to treat a portion of organic pollutants. Then, WW is

collected to the pump pits before pumping to the primary sedimentation tank

Primary sedimentation tank is designed vertically with beeding layer to increase efficiency and

reduce volume of construction. Tank bottom is sloped 60o to direct the sludge remover toward the

ditch. WW is led from the central pipes in the mid-tank with small speed to separate about 50 %

of SS. Meanwhile, BOD levels will drop 20-30 %. The effluent is collected from the pipelines

surrounding the internal the rim of the tank. The water is collected from the water trough around.

The sludge collected at the bottom of the tank is discharged to the sludge compressor tank by

hydrostatic pressure. The next stage is to combine biological treatment methods to thoroughly

treat the rest organic inorganic and toxic contaminants. Then, ww is led to complex AAO system.

- Step 2: Bio-treatmnet based- AAO technology (Anarobic, Anoxic, Oxic)

System of AAO treatment equipment has special structure. The specialized microorganic buffer

layer inside the equipment to clearly increase efficiency in treatment and to reduce tank volume

compared with conventional methods. The anaerobic, anoxic and oxic processes happen at the

same time here, as follows:

Anaerobic compartment has no oxygen and nitrate composition. It is mainly to remove

phosphorus and hydrocarbon components .

Anoxic compartment has no oxygen composition but plenty of nitrite and nitrate, especially

significant input of nitrate. The biological method is mainly used to remove nitrogen, nitrogen

compounds are released into the environment in the form of nitrogen gas.

Oxic compartment: Air is supplied by aeration machine. In this compartment, possible oxidizing

substances are used to complete entire bio-chemical process meanwhile nitrogen and ammonia

are converted to nitrate by the process of nitrogenizing via microorganisms Nitrifers and BOD

elimination by microorganisms Carbonuos

Anaerobic compartment: A majority of dissolved and suspended organic matters are destructed

by anaerobic microorganisms to form humus decomposition and gas.

Complex aeroten compartment: Treats BOD, nitrogenizing and pre-nitrogenizing at the same

time, organic matters and some inorganic substances will be decomposed to form microbial

biomass, which is known as biological cotton, then water is led to a secondary sedimentation tank

to separate biological cotton and clear water is led out.

Secondary sedimentation tanks: is designed vertically with the system of bottom sediment

discharge. A part of the sediments are pumped to the bio-tank to remain biomass concentration in

the tank. A part of the residues is discharged to the sludge compressor tank to dewater and

landfill.

Sludge treatment: The sludge, sediments in sedimentation compartment and each bio- treatment

compartment are pumped to return a part of activated sludge in biological equipment to ensure

the processing concentration. The residue is pumped to the sludge compressor compartment

where water is separated and returned to the equalization tank for preliminary treatment. Sludge

is compressed in term of volume and pipelined to the designated place and periodically treated.

57

Disinfection: To ensure the quality of treated effluent in line with the standards in terms of

mechanical, physical aspects and microorganism, WW must be disinfected by chlorine to

comprehensively treat pollutants and harmful bacteria effluent is checked in term of quality.

3.2.2. Comparison among treatment technologies

Table 3-1. Comparision of applied treatment technologies

Comparison

criteria SBR Technology Aerotank Technology

Hydraulic

mechanism

SBR – Sequence Batch Reactor is

operated with playing role of bio-tank

also as sedimentation tank. The number

of daily treated batches is adjusted

based on the flow and concentration of

influent.

It is operated continuously with 02

separate bio-tank and sedimentation

tank.

It is always operated in one

mechanism regardless whether

influent is significant or not.

Potential

application to

the IZ’s CETP

Because it is operated in batches so it is

very suitable to IZs’ CETP (because in

IZs, WW led to the CETP is often

varied in terms of flow and

concentration).

It is possible to apply to IZs’ CETP.

However, due to continual

operation, power consumption is

uneconomic and problem often

happens due to changed influent.

Microorganism

Due to the form of batch operation

with each batch mechanism is: water

feeding, reaction (aeration),

sedimentation and drainage. In

maximal sedimentation time, 1 hour,

this is complicated hydraulic condition

with different, continuously changed

states, requiring micro-organisms to

find ways to adapt or be removed. The

mechanism of choice is natural

selection and the struggle for existence

and survival, microorganisms will

compete and combine with each other

to become bigger, stronger and heavier,

when they will be settled faster and

will not be swept by the effluent in

discharging phase. Old, weak or sick

microorganisms shall be eliminated

due to their insufficient time for

sediment. With a healthy

microorganism, SBR technology has a

lot of advantages in operation such as

high shock resistance, fast recovery

capability

With continuous, unchanged

aeration mode, the microorganisms

will not be motivated to compete

and combine with each other. In

addition, current design standards of

biological sedimentation tank, water

storage time is in the range of 3-5

hours (it is noted that it is impossible

to reduce the storage time of the

sedimentation tank because it is for

sludge storage). With such a long

storage time, the weak or sick

microorganisms will be eligible to

be settled down, resulting in

shockage of microorganisms in

Aerotank and the restoration time is

longer than SBR technology

58

Nitrogen

treatment

Ability of nitrogen treatment is one of

the prominent advantages of SBR

technology in addition to its effective

treatment (the performance may reach

up 97%), SBR can adjust nitrogen

treatment efficiency quickly by

adjusting aeration and stirring time in

each batch

Due to the anoxic tank volume is

fixed so adjusting treatment

efficiency under input nitrogen level

is very limited and complicated.

Sludge

treatment

Activated sludge is saved after each

batch so they are treated in maximal

level. The total volume of sludge to the

sludge compressor is insignificant.

Entire sediment activated sludge is

pumped straightly to the sludge

compressor tank, then to the sludge

compressor. Therefore entire sludge

is very large.

Flexible

operation

Due to the batch operation, SBR is

very flexible in adjusting the running

mode. When WW flow or content is

lower than the design ones ((This is

characteristic of CETP), we may

operate it with fewer batch or reduce

the time of a batch to save power and

facilitate maintenance.

Whether WW flow or content is

lower than the design ones, we still

have to operate the system

continously (because the water level

in Aerotank is fixed and WW self

flows to the biological

sedimentation tank so we have to do

continuous aeration in 24/24).

Therefore, it is impossible to save

power if input WW is lower than the

design parameters.

Problem

solving capacity

Due to strong microbial system, SBR is

able to prevent from shockage and

restore higher than Aerotank

technology’s.

It is inflexible because the tank is

operated continuously so when an

incident occurs, we must stop the

system for check and repair.

Power

consumption

expense

Due to the ability to adjust the running

mode on basis of the input WW

parameters, SBR’s power consumption

is varied subject to the input WW

parameters and it is often lower than

Aerotank’s. In specific survey at

Amata IZ’s CETP, in the middle of

Phase 3 (Aerotank) and Phase 4 (SBR),

the power consumption of Phase 4 is

21.7% lower than Phase 3’s in the

same operation condition

The air blowers must be operated

continuously regardless whether the

flow or content of input WW is

lower than the design ones.

Therefore, it is so hard to save

energy and power consumption

expense will be higher than SBR’s.

Land use

demand

SBR plays both the role of reaction

tank and sedimentation tank so the land

use is usually 5-10% lower than

Aerotank’s

Large land use

Due to including reaction tank and

sedimentation tank

59

Conclusions: The above mentioned table shows that SBR technology is more prominent than

Aerotank in all aspects. Therefore, application of SBR technology toWW treatment is entirely

suitable to the conditions of Hoa Mac IZ.

SBR technology is the most prominent technology among Investor's choices

3.3. DISCHARGE LOCATION

After being treated in bio-pond, WW shall be discharged to the artificial open ditch before

draining Giat River via F600 culvert of which the bottom culvert segment is +2.5m. The ditch is

1500 m long and 7 m wide. 1 culvert is placed in the ending point of the ditch to automatic flow

WW to Giat River. With this option, WW is regulated in both effluent flow and quality before

discharging to the receiving source.

Therefore, the Investor only selects the unique location of the discharging plan (Figure 3.4).

Figure 3-2. Location of outlet from bio-pond to open ditch in IZ

60

Figure 3-3. Location of outlet from open ditch to Giat River

61

Figure 3-4. Outlet location

62

3.4. SLUDGE TREATMENT TECHNOLOGY

If sludge generated by IZ’s CETP is considered as HW, there are two treatment alternatives to be

selected: burning and hardened ws –based concrete producing method.

Advantages and disadvantages of the 02 above mentioned ws treatment plans are shown in below

Table 3.2:

Table 3-2. Analysis of Sludge Treatment Technology Alternative

Plan 1 Plan 2

Hardened mixed sludge producing

concrete

Incineration

Advantages - Simple.

- Creation of surplus value when

producing concrete.

- In line with the geographical conditions

for Hoa Mac IZ (because the 2 localities

nearby Ha Nam province are Hung Yen

province and Hanoi where the companies

specialized on HW treatment are

available).

- Safety for the environment.

- Elimination of emissions of air and

water pollutants.

- Simple.

- Suitable to actual conditions in

Vietnam because about 24

incinerators in the country are

used for disposal of HW.

- Easy operation and maintenance.

- Reasonable Investment cost.

Disadvantages - Require some additives such as sand,

stone, cement to produce concrete

- Generating WW, waste gas,

especially dioxins and furans (if

sludge contains organic chlorine

compounds). To remove them,

activated carbons for adsorption

must be used

Although incineration method is quite popular but hardened mixed sludge producing concrete

method has so many advantages so the Investor shall select hardened mixed sludge producing

concrete method to ensure that the treated sludge meets the current standards and reduces

emissions of pollutants at the same time.

Sludge treatment technology of Hoa Mac IZ’s CETP is presented in Section 1.5.3. This

dewatered sludge in the form of a cake will be transported and treated by Urban Environment

Company No. 11 – URENCO 11 with hardened mixed sludge producing concrete technology.

URENCO 11’s HW treatment technology was approved by Vietnam Environment

Administration (VEA) – the Ministry of Natural Resources and Environment (MONRE) with the

HW Management License No. QLCTNH: 1-2-3-4-5.022.VX (the 2nd

issue) (the documents are

attached in appendixes).

63

It is recognized as the suitable method to the existing conditions of the IZ and URENCO 11’s

competence on licensed HW treatment under Vietnamese laws so the Investor has no alternative

for the WS Treatment Company.

URENCO 11’s technology of hardened mixed sludge producing concrete is as follows:

- Sludge is transported from the sludge warehouse of Hoa Mac IZ’s CETP and dumped in

the concrete yard of Solidification Station. It is noted to dump sludge in the intermediate

treatment chamber in separate storage areas. It is prohibited to dump it with other waste types.

- Site preparation: The site is ready for dump of sludge, then solidified waste which are

poured from inside to outside and in suitable slope to facilitate the trucks to dump the mixture

after mixing outside.

- Waste sludge mixture is transported and fed into the mixer in the mixing ratio as

follows:

Waste: coarse sand: 1x2 Stones: Cement: Lime = 1m3: 0.3m

3: 0.5m

3: 250kg: 50kg

- After supply of waste sludge and additives for mixing in the mixer, the driver shall

transport and catch them under the outlet of the mixer.

-Waste sludge after stablly mixing in 5 minutes is discharged to three-wheeled vehicles to

transport to the intermediate treatment area for storage of solidified waste. Solidified sludge

mixture is buried under current regulations and laws in Vietnam.

Transportation route is as follows:

64

Figure 3-5. Diagram of sludge transport route

65

Hoa Mac IZ’s CETP NH 38 Yen Lenh Bridge Chu Manh Trinh Road turn to

Nguyen Van Linh Road (Hung Yen City) NH 39 Kim Dong District Khoai Chau

District Yen My District My Hao District Provincial Road 281 URENCO 11 (Dai

Dong Commune, Van Lam District, Hung Yen Province).

Description of the transportation route:

The transportation route distance from Hoa Mac IZ to URENCO 11 is about 65 km. It is the

shortest route. Details on the route are as follows:

The vehicles shall transport WS from Hoa Mac IZ along NH38 via Yen Lenh Bridge toward

Hung Yen City. The trucks pass Chu Manh Trinh Road to turn to Nguyen Van Linh Road in

Hung Yen City. Then, follow NH39 to pass Kim Dong District, Khoai Chau District, Yen My

District in Hung Yen Province. As passing NH5, it passes My Hao District of Hung Yen

Province to the Provincial Road 281 on Van Lam District, Hung Yen Province. Entire route is

covered with asphalt. The pavement is wide and traffic is favorable. Therefore, it is secured to

minimize potential risks on roads, especially traffic accidents. However, the route passes some

central areas in Hung Yen City (Chu Manh Trinh Road and Nguyen Van Linh Road) and other

residential areas namely the central area of Khoai Chau District and Yen My District. The road

section is quite short, about 12 km. The rest road sections and two road sections are mainly rice

fields of local people.

Finally, the trucks from the Provincial Road 281 turn to URENCO 11’s premise at Dai Dong

Commune, Van Lam District, Hung Yen Province. The road section connecting the Provincial

Road 281 and URENCO 11’s premise is soil path in length of 500 m and width of 5-6 m, which

are surrounded by rice fields of local people.

The above analysis shows that it is the most optimal route to minimize risks of traffic accidents

and negative impacts on the local people.

66

CHAPTER 4 ENVIRONMENTAL IMPACT ASSESSMENT

4.1. SOURCE, OBJECTS AND AFFECTED SCALE

The investment in building CETP with capacity of 1500 m3/day is appropriate to policy of

socio-economic development and environmental protection that is to contribute to solve

environmental issues in IZ. In addition positive impacts, however, it may be caused negative

impacts to environment, economy, and societyduring the construction and operation process if

there were not mitigation measures and appropriate treatment. The impacts of this project are

mainly generated in two stages:

- Construction phase;

- Operation phase.

4.1.1. Construction phase

4.1.1.1. Impact sources related wastes

The impacts of the construction phase of CETP are mostly negligible because this small

building separated from the residential area. The main impacts are listed in the below table:

Table 4-1. Sources of impact related to wastes in the construction phase

No Field Impact source Description Affected

subjects Evaluation

1 Landscape Storage of

construction

materials

Lack of management

of material

exploitation ,

formation of open

landfills

However, impacts

are insignificant

because CETP is

separated from

surrounding area by

shielding barriers.

Local aesthetics Short-term,

small-scale,

insignificant

Construction

activities

Construction

activities cause dusts

that affect on vision.

Similarly, small mass

of construction and

CETP isolated from

residential area, these

impacts are not

significant.

Local aesthetics Short-term,

small-scale,

insignificant

2

Pollution of

air and noise

Noise and

vibration from

mining, leveling

by construction

machinery and

transport

The noise level is in

threshold because of

construction area

isolated from

residential area.

Worker

Short-term,

small-scale,

insignificant

Dusts from Dusts are generated Worker Short-term,

67


subjects Evaluation

construction,

leveling and

storage of

mining and

construction

materials

from exploitation

materials. However,

this small building,

exploitation

materials are not

significant.

small-scale,

insignificant

Air pollution

from

construction and

material

transport

Mainly pollutants are

dust, SO2, NOx,

CO2. This impact is

also negligible.

Worker , air

environment

Short-term,

small-scale,

insignificant

3 Surface water Wastewater from

living activities

of labors

Domestic wastewater

can be generated by

activities of workers

in the construction

phase. Thus,

wastewater contains

amount of nutrition,

organic substances

and coliform.

Surface water Low, sort-

term and

can be

minimized

Runoff water Mainly component is

SS, oil of hazardous

wastes generated by

improper

management.

Surface water Low, sort-

term and

can be

minimized

4 Underground

water

Exploiting

activities

Underground water

can be polluted if

underground

operations are

necessary for

construction.

Underground

water

Low, sort-

term and

can be

minimized

5 Solid wastes Solid wastes

from labor

activities

Wastes include food,

polymer bag, wood,

metal, glass, etc…

In addition, there is

leachate, odor and

favorable

environment for

insects and disease

vectors.

Local

aesthetics,

worker, local

residents

Low, sort-

term and

can be

minimized

Construction

wastes

Construction wastes

are cement, bricks,

sand, stone, wood,

scrap metal, and

other spilt materials.

Local

aesthetics,

worker, local

residents

Low, sort-

term and

can be

minimized

Hazardous They are containers Soil, surface Low, sort-

68


subjects Evaluation

wastes of oil, gasoline,

grease and solvents.

However, it is

expected that amount

of these wastes are

very small.

water quality term and

can be

minimized

6 Traffic safety Increasing traffic

jam from

increasing

transportation

trips

Impact is negligible

because they are in

industrial parks.

Transportation Low, sort-

term and

can be

minimized

7 Occupational

safety

Lack of safety

equipments

Incident or accident

occurs in the absence

of safety equipment

and lack of upper

management in the

construction sector.

Worker Low, sort-

term and

can be

minimized

8 Living

activities

labors Construction site is

away from

residential areas.

The number of

workers here is just

not much for small-

scale construction of

CETP.

Local residents Low, sort-

term and

can be

minimized

9 Ecology and

landscape

IP has no evaluation

of ecology and

landscape.

Ecology,

biodiversity

Low, sort-

term and

can be

minimized

4.1.1.2. Impacts sources unrelated to wastes

The impacts unrelated to wastes in the construction phase are generally very small, negligible

because construction area is far from resident. The impacts are listed as below table:

Table 4-2. Impacts unrelated to wastes in the construction phase

No Impact sources Affected subjects Affected scale

1 Noise, vibration in the

construction phase and

equipment installation

Workers, local residents Low, short-term and

can be minimized

2 Pollution of residual heat Workers, local residents Low, short-term and

can be minimized

3 Local flood Surface water,

Underground water,

Landscape.

Low, sort-term and

can be minimized

4 Fire incidents, accidents in the Workers Low, sort-term and

69

No Impact sources Affected subjects Affected scale

construction process can be minimized

5 Social evils caused by workers

from other place who may have

conflicts with local residents

Workers, local residents Low, sort-term and

can be minimized

6 Traffic safety by increasing the

number of vehicles transporting

construction materials,

machinery and equipment in the

project area


can be minimized

7 The ability to spread infectious

diseases


can be minimized

4.1.2. Operation phase

CETP is far from residential areas, therefore, impacts in the operation phase don’t affect

the surrounding residential areas. The main impacts are listed in the below table:

4.1.2.1. Impact sources related to wastes

Table 4-3. Impact sources related to wastes, object and affected scale

No Field Impact

sources Description

Affected

objects Affected scale

1

Odor and air

pollution

WW tank Odor from WW Workers, local

residents

Average,

significant, can

be minimized Air pollution from the

anaerobic tank, especially

greenhouse gas

Microorganisms and

bacteria in the air

Smell from oil, gases, and

grease

2 Noise and

vibration

Movement of

vehicles and

machines

It’s caused by starting

activities and movement of

vehicles, far from resident

area

Public areas,

nearby

industries

Low,

significant, can

be minimized

3 Water

pollution

WW It contains high

concentration of SS, COD,

nutrient, waste metal, toxic

chemicals, and pathogens

Surface water Average, can

be minimized

Leakage of

WW

It contains high

concentration of SS, COD,

nutrient, and pathogens

Surface water Low to

average, can

be minimized

Rainwater Its component has SS,

grease, pathogens


average, can

be minimized

WW WW of workers


average, can

be minimized

4 Solid waste Wastes Solid wastes from multiple Workers Low to

70

No Field Impact

sources Description

Affected

objects Affected scale

stages average, can

be minimized

Sludge Sludge will be treated and

disposed properly

depending on its quality

Community Average, can

be minimized

Domestic

solid wastes

Solid wastes will be

collected for transport to

landfill

Soil, surface

water

Low, can be

minimized

Hazardous

wastes

Grease, scum floating

compounds from water tank

Soil Average, can

be minimized

4.1.2.2. Impact sources unrelated to waste

Table 4-4. Impact sources unrelated to waste, object, affected scale

TT Impact source Affected objects Affected scale

1 Noise, vibration from WW pumps, agitator,

air blower

Operational staffs Low, long-term,

can be minimized

2 Residual heat from machinery activities in

CETP

Operational staffs Low, long-term,

can be minimized

3 Sedimentation of water in Giat river area

Surface water Low, long-term,

can be minimized

4.2. ENVIRONMENTAL IMPACT ASSESSMENT (EIA)


4.2.1.1. Impacts on air environment

The activities in construction and installation phase of the Project cause impacts on the air

environment, which is shown in below table:

Table 4-5. Impacts on Air Environment during Construction Phase

No. Activities Pollutants

1 Site clearance Dusts created by site clearance and construction

of the Project

2 Transportation, loading, storage of

materials

Arising dusts from the process of transportation,

loading of materials

Dust, gas created in the process of storage,

stockpile of fuels and materials.

3 Material transportation means Spilled materials and fuels (sand, rocks, cements,

oil and gas, paint)

Coal dust and gases SO2, NO2, CO, THC

created by exhaust fumes of means of

transportation of sand, stones, bricks, cement,

steel, equipment, fuel, etc, exhaust fumes from

the machinery and equipment for construction

(concrete mixers, crane trucks)

Noise, vibrations created by means of

71

No. Activities Pollutants

transportation

4 Cutting, welding and assembly of

equipment

Thermal radiation from the construction process

with heating works and welding fumes (such as

the cutting, steel welding, cutting, welding for

assembly)

The agents cause impacts on the environment and workers’health. Among them, impacts caused

by dust, gas emissions from means of transportation and noise are main impacts in the

construction phase, which are assessed in details as follows:

(1). Impacts of site clearance

The selected site for construction of the Project is relatively flat. Total area of the ETP, Phase 1 is

1,400 m2. Therefore, the quantity of site clearance is insignificant. Therefore, impacts of the site

clearance on the air environment are little.

(2). Impacts of dusts created by means of transportation of materials, equipment

Table 4-6. Pollution coefficient for truck with capacity of 3.6-10 ton

No Parameter Value (Kg/1000km)

1 Dust 0,9

2 SO2 2,075S

3 NOx 14,4

4 CO 2,9

5 THC 0,8

Source: WHO, Rapit Environment Assessment, 1993

Note: S is sulfur content in Do oil (%)

Impacts of dusts on the human beings and animals depend on their chemical physical

characteristics. They may cause irritation and respiratory diseases, eye problem, skin diseases, etc

in certain levels namely asthma, allergic inflammation, chronic lung diseases. Studies show that

particles with a size of 5-10 µm shall be retained in trachea and bronchi. The particles in size of

0.5 µm may cause impact on the lung. Silic particles in the sand may cause great impacts, even

Sarcoidosis if exposing to this dust for a long time.

Due to objective factors such as traffic density so the road users and inhabitants in the Project site

shall be the objects who are directly impacted by the construction phase. However, it takes 6

months for construction phase so these impacts are short-term.

The means of transportation of materials and devices has created dust and pollutants, such as

COx, NOx, SOx, THC, etc. This kind of polluting source is scattered, difficultly controlled,

directly impacting the local people along the road sides. However, the impact scope is

insignificant because the number of local people along the road sides are small

(3). Impacts caused by cutting, welding, painting and metal coating operations

During the construction phase of the ETP, such operations as cutting, welding, painting and metal

spraying may happen regularly. The equipment namely welding sticks, welding gas and

accessories (steel, iron, etc) are used to cause adverse impacts on the environment.

72

Table 4-7. Ratio of pollutants during welding process (mg/1 welding rod)

No Pollutants Diameter of welding rod, mm

2.5 3.25 4.0 5.0 6.0

1 Welding smoke (containing

many pollutants) 285 508 706 1,100 1,578

2 CO 10 15 25 35 50

3 NOx 12 20 30 45 70

(Source: National Institute of Labour Protection)

Toxic emissions, welding gas created during the cutting and welding phases may cause impacts

on the ambient air quality and the workers’ health. Most of such toxic gases contain heavy metals

such as Zn, Cu, Hg, Cr, highly toxicity and sustainability.

In addition, the used accessories during the process of painting, coating metal particles,

chemicals, paints, solvents, etc to create paint gas, paint dust, sand dust, metal rust, and chemical

substances also cause negative impacts on the surrounding air environment and workers.

Due to impacts from the processes of welding, cutting, painting, metal coating happening mainly

in the construction phase, the Investor shall apply Adverse Impact Mitigation Measures such as

the arrangement of the specific painting, coating areas where less people pass and the workers

must be provided with sufficient protection facilities.

(4). Impacts created by residence and living operations of the workers on site

A number of employees working on site are about 20 people. The daily living activities of

workers impact the air quality due to the following reasons:

- Bad odor (NH3, H2S, mercaptan HS-R) generated from domestic WW;

- The gas generated by the decomposition of organic waste;

- The odor generated by septic tank and organic waste.

Generally, impacts on the air quality due to daily living activities of workers are insignificant and

short-time.

(5). Impacts created by noises in construction activities.

The construction activities in the Project cause noise, including:

For the project, have the potential to cause noise include:

- Project site clearance;

- Means of material transportation;

- Use of machinery during construction and installation of equipment for the CETP;

- Landscape and site clean-up

73

Table 4-8. Noise intensity of some equipment

Equipment The noise

level from

(dBA)

The noise

level from

20m (dBA)

The noise

level from

50m (dBA)

The noise

level from

100m (dBA)

Bulldozer 93 70.5 62.5 56.5

Roller 72.0 - 74.0 49.5 – 51.5 41.5 – 43.5 35.5 – 37.5

Excavator using front spoon

scurf 72.0 - 84 49.5 - 61.5 41.5 - 53.5 35.5 - 47.5

Bucket scooping land 72.0 - 93 49.5 – 70.5 41.5 – 62.5 35.5 – 56.5

Rickshaw 77.0 - 96 54.5 - 73.5 46.5 - 65.5 40.5 - 59.5

Leveling machine 80.0 - 93 57.5 – 70.5 49.5 – 62.5 43.5 – 56.5

Paving the way machine 87.0 – 88.5 64.5 - 66.0 56.5 - 58.0 50.5 - 52

Truck 82.0 - 94 52.5 – 65.5 44.5 – 57.5 38.5 – 51.5

Concrete mixer 75.0 – 88.0 57.5 - 60.5 49.5 - 52.5 43.5 - 46.5

Concrete pile driver 80.0 - 83 57.5 – 60.5 49.5 – 52.5 43.5 – 46.5

Machine of concrete beams 85.0 62.5 54.5 48.5

Generator 72.0 – 82.0 49.5 – 60.0 41.5 – 52.0 35.5 - 46

TCVN 5949:1998 (6h – 18h) 60 dBA

(Source: National Institute of Labour Protection)

The ability to spread the noise of the construction site to the surrounding area is

determined as follows: Li = Lp - ∆∆∆∆Ld - ∆∆∆∆Lc (dBA)

Of which:

- Li: The noise level at the calculation time from the noise source at the distance d (m)

- Lp: The noise level measured at the noise source (from 1.5 m)

- ∆∆∆∆Ld: The noise levels decrease according to the distance d at frequency i

∆Ld = 20 lg[(r2/r1)1+a

] (dBA)

r1: Distance to the noise source with the Lp (m)

r2: Distance calculating the noise level reduction according to the distance correlative with Li (m)

a: Coefficient including the effect of noise absorbing of the surface topography (a = 0)

∆Lc:: The noise level reduction over obstacles. Getting ∆Lc at the project area = 0

From the above formula, we can calculate the noise levels of construction equipment to the

surroundings

Noise and vibration often cause a direct effect in the human auditory system. Their effects

are at different levels: causing fatigue, headache, neurological disorders, ....

According to the calculations in the table above, the noise only affects in a narrow range

of 200m radius, therefore the objects bearing the greatest impact is the construction workers.

However, the level of impact is small, only causing fatigue when working continuously about 12

hours per day

74

Figure 4-1. The impact of noise on people

(6). Impact assessment of air pollutants:

Exhausted pollutants in the construction phase may go inside the human’s body and cause some

symptoms listed in below table:

Table 4-9. Impacts of Air Pollutants

No. Parameters Impacts on human beings

1 Dust - To stimulate respiratory, pulmonary fibrosis, lung cancer;

- To cause Injury to the skin, cornea, diseases of gastrointestinal tract.

2 Acid gas (SOx,

NOx).

- To cause impact on the respiratory system, to be dispersed to the

blood;

- SO2 may cause poinson through skin and reduce alkaline reserve in

blood;

- To make acid rain, to adversely affect the growth of vegetation and

crops;

- To enhance the metal corrosion, concrete material degradation and

buildings;

- To cause adverse impacts on climate, ecosystems and the ozone

layer.

NOISE

EARS

NERVOUS SYSTEM

ORGAN OF

BODY

RESPIRATORY

SYSTEM

CIRCULATORY

SYSTEM KINETIC

SYSTEM

Increasing

respiratory

rate

Reducing ability to

distinguish colors,

reducing the

visibility

Causing

gastritis,

gastric

reduction

Increasing heart

rate, causing

circulatory

system disorders

Making muscles tired,

causing slow reflexes

vestibular disorders

VISUAL

PERCEPTION

DIGESTIVE

SYSTEM

75

No. Parameters Impacts on human beings

3 Oxyt carbon

(CO)

- To reduce oxygen transport of the blood to cells in the impacts of

CO in association with Hemoglobin to constitute CO-hemoglobin

carboxyl

4 Carbonic gas

(CO2)

- To cause pulmonary respiratory disorders

- To cause the greenhouse effect;

- To cause impacts on the ecosystem.

5 Hydrocarbons - To cause acute poisoning: weakness, dizziness, headache, sensory

disturbances, sometimes fatal.

4.2.1.2. Impacts on the water environment

Water environment pollutants in the construction phase consist of:

- WW from construction;

- Domestic WW of workers;

- WW created by cleaning and maintaining machinery;

- Rainwater runoff the construction site rolls dusts, soil, sand, rocks, materials namely

cements, petrol and gas, paint, etc scrattered to cause impacts on water quality;

(1). Impacts of domestic WW of workers

Main impacts on the water quality during the construction phase of the Project are

domestic WW of workers. Main contents of the pollutants in the domestic WW are waste matter,

suspended solid (SS), organic compounds (BOD/COD), nutrients (N, P) and pathogenic

organisms (Coliform, E.Coli). Domestic WW contains biodegradable organic substances,

residues, nutrients and microorganisms to cause contamination of surface water and groundwater

if they are not treated.

Domestic WW of workers is 120 – 150 l/person/day in average. Total domestic ww of workers

on site in the highest point, with 20 employees, is 2400 - 3000 liters, equal to 2.4 to 3.0 m3/ day

and night.

Table 4-10. Forecast the pollution load in waste water of labors (estimated volume of 20 person)

No. Parameter Unit Volume calculated by

WHO Total volume (Kg)

1 BOD g/person/day 45 - 54 0,9 – 1.08

2 COD g/person/day 85 - 102 1,7 – 2,04

3 Suspended Solid g/person/day 70-145

1,4 – 2,9

4 N-T g/person/day 6 - 12 0,12 – 0,24

N- NH4

g/person/day 3,6 – 7,2 0,072 – 0,14

5 P-T g/person/day 0,6 – 4,5 0,012 – 0,09

6 Total bacterias MPN/100ml 109

- 1010

-

7 Coliform MPN/100ml 106

- 109 -

8 Fecal Stemorela MPN/100ml 105- 10

9 -

9 Worm eggs - 103 -

10 Virus

- 102

- 104

-

76

(Source: WHO)

If the number of workers increases, the total amount of pollution (KLON) was calculated

using the formula:

Total KLON (Kg) = KLON (g/person/day) × number of employees (people)

Construction workers are mostly from other localities, so all personal living activities such as

eating, bathing, ... are in place so even though the flow of wastewater is small but if we cannot

collect to treat, this will affect much on the environment landscape.

(2). Impacts of WW from cleaning and maintaining machinery

The process of sanitation, maintenance of machinery and equipment in the construction site will

generate a large amount of organic matters, oil and SS. Flow and volume of pollutants in each

step are shown in below table:

Table 4-11. Flow and Volume of Pollutants Created from Machinery & Equipment Cleaning and

Maintaining Phase on Site

Generation process Flow rate

(m3/day)

Volume of Pollutants (mg/l)

COD Oil and

grease SS

Machinery maintenance 1

20 – 30 – 50 – 80

Machinery cleaning 50 – 80 1.0 – 2.0 150 – 200

QCVN 40:2011/BTNMT, Column A 75 5 50

Source: Generalized ENTEC, 2012.

WW flow rate generated from this phase is insignificant and pollutants such as COD, SS, oil do

not exceed the standard specified in the Regulation QCVN 40:2011/BTNMT, Column A

(3). Impacts on groundwater quality

In general, the construction phase does not cause much impacts on groundwater resource.

However, the construction phase can pollute groundwater. Fuel compositions (gasoline, oil,

organic solvents, etc) can be leaked out from means of transportation and equipment used, stored

on site, which are swept by rainwater to rivers to penetrate into the soil as the groundwater

pollutant in the Project site. In addition, leaked water in the process of concrete mixing, bored

piles, cleaning machinery and equipment may pollute groundwater

(4). Impacts of rainwater running off

According to the World Health Organization (WHO), the concentration of pollutants in rainwater

running off has the typically range from 0.5 to 1.5 mg N/l, from 0.004 to 0.03 mg P/l; 10-12 mg

COD/l and 10-20 mg TSS/l. Rainfall water running off is relatively clean, if flowing through the

construction area, it will entail soil, sand, packages, etc… it will increase the SS contents. If there

is any trash rack to separte trash before flowing to the discharging sources, its influence on water

quality will be not significant.

Calculating the flow of rain water:

- The total project layout area is 1394 m2,

- The largest daily rainfall (mm/day): 9.32 mm/day

77

→ The amount of rainwater running off (max) with the assumption that 100% of rainfall

is involved in the running off process:

1349 (m2) x 9.32 (mm / day) x 10

-3 = 12.99 m

3

With flow as calculated above, the rain water running off can cause the local flooding for the area

surrounding the project. However, the level and scope of impact is low.

(5). Impacts of construction wastewater

Construction of wastewater has pollutant concentrations of BOD, COD and suspended solids are

many times greater than QCVN 40:2011/BTNMT, if the waste water is discharged directly to the

discharging source and this will cause local sediment and pollution. Therefore, this wastewater

must be treated by sedimentation method before discharging to the flow sources, which will

significantly limit the impact.

Table 4-12. Pollutant concentration in wastewater of construction phase

No. Parameter

Unit

Construction

wastewater

QCVN

40:2011/BTNMT

Column B

1 pH - 6.99 5.5 - 9

2 Suspended solid mg/l 663.0 100

3 COD mg/l 640.9 100

4 BOD5 mg/l 429.26 50

5 NH4+ mg/l 9.6 10

6 Total N mg/l 49.27 30

7 Total P mg/l 4.25 6

8 Fe mg/l 0.72 5

9 Zn mg/l 0.004 3

10 Pb mg/l 0.055 0.5

11 As mg/l 0.305 0.1

12 Oil mg/l 0.02 5

13 Coliform MPN/100ml 53x104 5000

(Source: Center of Urban and Industrial Environmental Engineering)

QCVN 40:2011/BTNMT: National Technical Regulation on Industrial Wastewater, column B.

4.2.1.3. Impacts on soil resource – environment

Due to domestic WW of workers, construction wastes, oil and grease caused by equipment and

machinery on site, in the construction phase, wastes and WW are generated by worker activities

from temporary camps. The redundant or leaked wastes during the construction phase, oil and

grease from cars, trucks, construction machinery, etc are not well collected and managed that

may infect the soil environment significantly.

4.2.1.4. Impacts of solid wastes

Solid wastes during construction of this project are divided into two types as domestic wastes and

construction solid wastes.

- Domestic waste: Average volume of domestic waste calculated for a person per day: 0.5

kg/person/day × 20 people = 10 kg/day, mainly organic substances from the left food, plastic

bags, cardboard.

78

- Construction waste: Mainly construction material spilled or damaged packages of

materials, machinery. Due to the construction nature of just using some simple materials such as

cement, steel, bricks, stones, the construction waste volume is small, estimated to average of

about 20-30 kg/day. This waste can be reused.

→ The total amount of waste (domestic and construction): 30-40 (kg/day).

- Hazardous solid waste: Lubricants of construction equipment, oiled mops and gloves,

broken bulbs, adhesive waste, other chemical containers ..., estimated about 3-5 kg /day.

Solid waste and hazardous waste if not being collected will cause unsanitary, impact on

landscape and health of construction workers.

4.2.1.5. Impacts on social – economic aspects

(1). Advantaged impacts

The construction phase of the Project may bring advantaged impacts to the locality’s economic

and social aspects as follows:

- To create employment for local people;

- To increase workers’ income;

- To stimulate development of some types of food services, living and other

entertainment activities to facilitate living demands of workers in the Project site.

(2). Adverse impacts

Gathering the workforce (about 20 workers per day) during the construction period may cause

adverse impacts on the social order and security in the region;

An increasing number of vehicles getting in and out the site may cause heavy traffic, leading to

higher risks of traffic accidents therein.

Therefore, the Investor has to pay more attentions on machinery, vehicles, and engineering

equipment scientifically and control traffic safety to minimize adverse impacts on the

environment and socio economic aspects.

4.2.1.6. Synthetic EIA caused by Construction Phase

Table 4-13. Generalized Table of Impacts in Construction Phase

Environment

elements

Operations of the Project

Site clearance Material

Transportation

Construction of

Work Items Workers

Air environment *** *** ** **

Surface water

environment

0 0 * **

Groundwater

environment 0 0 * *

Biological

diversification

0 0 0 0

Landscape * * * *

Agricultural land 0 0 0 0

Living land 0 0 0 0

79

Environment

elements

Operations of the Project

Site clearance Material

Transportation

Construction of

Work Items Workers

Traffic * *** 0 0

Employment ** * ** **

The community’s

health in the project

site

* * * *

Social evils, contagious

diseases * * * **

Historical relics 0 0 0 0

Note:

High impacts: ***

Mean impacts: **

Low impacts: *

No Impact or insignificant impacts: 0

Conclusion: Above analysis shows that the impacts of construction phase on the surrounding

environment and landscape are insignificant, narrow and short-term. The largest impacts in this

phase are traffic safety control and local people along the two road sides due to material

transportation, dust emissions.


4.2.2.1. Impacts on air

The main factors impacting the air quality are bad odor created by decomposition of organic

matters in WW and waste collection via waste filter and pump. The locations creating the bad

odor are presented in Table 4-14. WW may have bad odor and direct impacts on the workers

here. However, if combining varied treatment engineering measures and keeping it at a safe

distance, these impacts are minimized. In addition, treatment method for aerobic WW only create

a small amount of CH4. The CETP is isolated from the centralized residential area. Therefore,

transmission of pathogenic microorganisms in the air is irregular.

Noise created by the equipment in CETP is mainly pump, air blowers, causing direct impacts on

operators. Impacts on air quality as the CETP’s operations are in the areas surrounding the IZ and

the Plant.

Table 4-14. Bad Odor Emission Sources in the CETP

Locations Pollutants

Inlet WW, exhaust fumes, oil, sludge

Pump pits WW, surface pollutants, sludge, sand

Oil Separator Tank,

Equalization tank

WW, exhaust fumes, oil, surface pollutants, sludge

Flocculation tank –

coagulation tank

Gas emission, oil, bio membrane, chemicals

Primary Sedimentation

Tank

WW, residues, gas emission, surface pollutants, sludge, re-

circulated solvent

80

SBR Tank WW, exhaust fumes, surface pollutants, sand, bio-membrane

Sludge Tank WW, exhaust fumes, oil, surface pollutants, sludge

Pump Station WW, surface pollutants

Bio-pond WW, exhaust fumes, residues, chemicals

Drainage ditch WW, residues, sludge, spilled chemicals and circulating area

Outlet WW, residues, sludge, spilled chemicals

4.2.2.2. Impacts on groundwater environment

The operation of the CETP have impacts on groundwater only when pipelines, the tank

bottom and WW in sludge tanks are not well controlled. However, the risks are possibly

minimized by proper operation and maintenance measures.

4.2.2.3. Impacts surface water environment

(1). Domestic WW of operators

The average content of WW is about 120 liters / person / day in average. However, the common

quorum of operators in the ETP should not exceed 6 people so domestic ww is not large.

Normally, Domestic WW created by operators has pollutants as BOD, COD, TSS. WW

generated by operators is treated through septic tanks so its pollutant contents reduce

significantly and as the result, the impacts are insignificant.

(2). WW from the CETP

WW generated by operations of the ETP consists of many sources:

- WW separated from the process of sludge treatment process, oil and grease scum. The

main elements containing SS, microorganisms and other pollutants.

- The water for cleaning pumping equipment, chemical tanks, filters, floors, etc may be

contaminated by oil and grease with insignificant concentrations;

Entire created WW shall be collected and sent back to the treatment tanks of the CETP.

(3). Rainwater runoff:

The rainwater runoff in the Project area shall sweep soil, sand, waste, oil and grease and

impurities scrattered on ground and on roof, treatment tanks, corridors to water sources. If the

effluent is not well controll, it may cause adverse impacts on the surface water source,

groundwater, and aquatic life in the area. Estimated concentrations of pollutants in average in

rainwater runoff are as follows:

- Suspended solids (SS) : 10-30 mg/l;

- Chemical oxygen demand (COD) : 10-20 mg/l;

- Total Nitrogen (N) : 0.5 – 1.5 mg/l;

- Phosphorus (P) : 0.004 – 0.03 mg/l.

Thus, rainwater runoff is relatively clean in comparison with other emission sources. Therefore,

rainwater drainage system will be completely separated from the WW drainage system via

manholes and trask racks before discharging to the environment via the IZ’s rainwater drainage

system.

81

4.2.2.4. Impacts on soil

Main impacts on soil are sludge from operations of waste in the CETP and domestic waste of the

workers.

(1). Solid waste (SW) generated from the treatment phase

The volume of SW generated from the CETP is affected by:

- Debris from the coarse filter and fine filter;

- Sand from sedimentation tank;

- Sludge from sludge tank including sludge, septic sludge, alum and polymer;

- Biological sludge from the biological treatment work as tanks, dropping filters

and oxygen systems.

(2). Sludge created by the CETP

Sludge is dewatered by sludge compresor and the polymer is considered as an adjuvant for

dewatering process.

Wastewater and sludge mainly consist of organic compounds, decomposited compounds to cause

unpleasant odors. If the sludge composition has toxicity due to industrial WW, it shall be

temporarily stored in the sludge tank, transported and treated if being leaked to cause impacts on

the soil environment .

Table 4-15. Calculations of Waste Sludge generated by Hoa Mac IZ’s CETP with assumed

capacity of 1500 m3/day.

No. Content Quantity Unit

1 Generated sludge content in the physicochemical

sedimentation tank

Daily average flow rate, Q 1,500 m3/day

a. SS gets in the physicochemical treatment clusters, , SSv 300 mg/l

SS gets out the physicochemical treatment clusters, SSr 150 mg/l

Daily physicochemical sludge everyday, M1=Q*(SSv-

SSr)/1000

225 kg/day

b. Created daily flocculated chemical content, MPAC(100%) 60 kg/day

Sludge precipitated from created daily flocculated chemical

content, M2=0.25*MPAC(100%)

15 kg/day

c Total sludge residues in the physicochemical sedimentation

tank,

M'=M1 + M2

240 kg/day

2 Daily created Bio-sludge

Mean flow rate/ day 1.500 m3/day

BOD gets in SBR tank, BODv 210 mg/l

BOD gets out SBR tank, BODr 23 mg/l

Sludge output factor, Y 0,55

82

Bio-sludge daily created in SBR tank, M''=Y*Q*(BODv -

BODr)/1000

154,3 kg/day

3 Total sludge pumped to the sludge compressor, M1=M' +

M''

394,3 kg/day

Compressed sludge in the sludge compressor with the humidity of 82%, equivalent to the

solid content of 18%

Sludge created after the sludge compression,

M2=M1/0.18/1000

2,19 Ton/day

(3). Domestic solid waste (DSW)

Domestic waste generated by workers can be calculated based on the number of employees

working in the CETP (about 6 people). Estimated quantity of generated waste is about 5 – 8 kg /

day under the rate of 0.5 kg/person/day and it is assumed that the workers are permitted to clean

their working place. The quantity is insignificant, collected and treated with DSW in the IZ under

the signed Contract.

(4). Hazardous waste (HW)

Waste grease and oil can be generated from maintenance and operation of vehicles and

machinery. Rest quantity of oil and grease can be identified as HW. If the strict management

measures are not applied to collect and treat the residual oils, this could be a source of pollutant

to the groundwater and soil. However, the estimated impact is insignificant on the environment.

Containers of chemicals are used in the treatment technology should be collected and stored in

accordance with the prescribed standards on safety, collection and periodical treatment.

4.2.2.5. Impacts on the ecology and landscape

Generally, impacts on construction of the CETP will not change any of landscapes and

ecosystems because this area’s current construction purpose changes, it is for building the IZ.

Presence of modern CETP shall build a good reputation to the IZ to the surrounding

communities.

After being treated, water quality shall meet the requirements in the Regulation QCVN

40:2011/BTNMT, Type A before discharging Giat river; therefore the impacts on the ecology of

the river are active in comparison with unavailability of the CETP.

4.2.2.6. Impacts on the community’s activities, health and safety

The Project does not cause much impacts on the public works and community except for bad

odor created by the CETP to make the surrounding industrial tenants unpleasant. However, if

mitigation measures are applied to reduce bad odor, such impacts are insignificant.

4.2.2.7. Environment Incidents in the Operation Phase

(1). Operation Incidents

The CETP may encounter with technical problems due to many reasons such as obstruction, fire

of the pump, automatic defects of the machinery, shortage of maintenance in a long time, etc.

These incidents may cause treated effluent dissatisfactory as discharging to the receiving

environment. The long-lasting incident which is not restored shall cause serious and direct

impacts on the receiving water source quality (receiving environment) and indirect impact on

ecosystems.

83

(2). Incidents caused by natural disasters

In the rain season, natural incidents such as floods, natural disasters may happen to cause the

system of WW collection – drainage damaged. Untreated WW shall be leaked in the surrounding

environment, polluting the water and soil environment in the wide scope toward the direction of

the effluent.

Table 4-16. Synthetic Table of Impacts in Operation Phase of the Plant

No. Impacting Sources Air Water Soil Ecology

and

Landscape

Community

1 Exhaust fumes ** 0 0 * *

2 Wastewater * *** *** ** **

3 SW and HW ** ** *** ** *

4 Polluting noise and

vibration

** 0 0 0 *

5 Environmental

incidents

* ** * * *

Note:

High impacts: ***

Average impacts: **

Low impacts: *

No Impact or insignificant impacts: 0

4.3. DETAILED LEVEL AND RELIABILITY OF ASSESSMENTS

Methods of assessment and reporting are common methods in environmental impact

assessment such as figure listing method, catalogue method and mathematic formula using

method, … Because its nature is an environmental treatment project, but is not the production

factory; its scope is small and volume and nature of emissions are not complicated, methods of

reporting such as network diagram method and map joining method are unused.

Detailed level and reliability of assessing possible environmental impacts, risks,

environmental incidents upon deploying and not deploying the project are objectively presented

in Table 4-17.

Table 4-17. Assessment of reliability of the EIA methods applied

No. Content of assessment Detailed level and reliability

1 In the construction phase

1.1

Assessing impacts caused by

dust and exhaust gas from the

means of transport

High detailed level and high reliability thanks to

sufficient figures about the means of transport

1.2


noise from construction

equipments, machines and

means of transport


figures collected from results of actual studies in the

world, specific calculations for the project and

comparison with the Standard on noise in working

place by the Ministry of Public Health

1.3 Assessing impacts caused by High detailed level and high reliability thanks to

84


vibration from construction

equipments, machines and

means of transport

figures collected from results of actual studies in the

world, specific consideration for the project and

comparison with criteria of vibration impact

assessment applied in the world for the

projects/subjects specifically affected in the area

1.4


overflowed storm water and

temporary inundation

High detailed level and high reliability thanks to the

overflowed storm water discharge calculated

specifically for the project conditions

1.5


domestic solid waste (waste

water and solid waste)


waste mass/ discharge calculated separately for the

project on a basis of figures provided by the

Employer and reference figures of the projects

implemented in the area

1.6 Assessing impacts caused by

construction wastes

Low detailed level and relative reliability thanks to

lack of construction waste studies in Vietnam


waste grease


grease studies conducted in Vietnam and specific

calculations for the project in compliance with

Vietnam’s applicable regulations

1.8

Assessing social impacts

(traffic obstruction,

contradiction between

workers and local people and

industrial accidents)

High detailed level and relative reliability thanks to

identity and assessment of these impacts on a basis of

considering specific conditions of the project and

experience in social impact assessment of the

industrial zone construction projects as well as other

projects conducted by the experts

2 In the operation phase

2.1


exhaust gas from activities of

the waste water treatment

plant


reference and inheritance of studies in the world, use

of WHO’s pollution coefficient, inheritance of

industrial zone studies in Vietnam, comparison and

collation with a list of business lines permitted to

invest in the project and separate calculation for the

project

2.2


bad odor from the

concentrated waste water

treatment plants


reference of figures and studies about bad odor from

the waste water treatment plants in the world and

separate calculations and assessments for the project

2.3


aerosol emitted from the

concentrated waste water

treatment plants


reference of figures and studies about aerosol from

the waste water treatment plants in the world and

separate assessments for the project


waste water


reference of figures and different studies about

industrial and domestic waste water and separate

calculations of pollution discharge and load for the

project

85



solid waste


reference of figures and studies from real surveys and

separate calculations and assessments for the project


hazardous wastes


reference of figures and different studies about

hazardous wastes in conditions of the industrial

zones in Vietnam

2.7


sludge from the concentrated

waste water treatment plants

Relative detailed level and high reliability thanks to

forecast of sludge discharged daily for the

concentrated waste water treatment plants


environmental incidents

Relative detailed level and high reliability thanks to

assessments based on specific conditions of the

project

2.9 Assessing impacts on

environmental components


assessments based on other contents of assessment,

use of rapid environmental assessment matrix

(RIAM) with support of computer software

4.4. EFFECT ON WATER QUALITY

4.4.1. Pollution load

At the maximum load of 1500 m3/day, the pollutant load in WW of Hoa Mac CETP can be

estimated as follows:

Table 4-18. The pollution load in WW of Hoa Mac IZ CETP

No. Parameter Concentration

(mg/l)

Pollutant load

(kg/day)

1 TSS 50 75

2 BOD5 30 45

3 COD 75 112.5

4 N-NH3 5 7.5

5 Total Fe 1 1.5

Note: The pollutant load is calculated by theory of WW quality after treatment that meets with

national standard QCVN 40:2011/BTNMT, column A (Kf = 1.0, Kq = 0.9)

4.4.2. Impact assessment on receiving source

The pollutant load will affect directly on receiving source that are Giat River and Hong River at

section passing Ha Nam province. Based on Table 4.18, after CEPT starts operating, a flow of

1500 m3/day will contribute into Giat and Chau Giang River. This average load is 75 kg SS, 45

kg BOD5, 112.5 kg COD, 7.5 kg ammonia and 1.5 kg total iron.

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.

86

- Increase organic pollution load (BOD5, COD), increase 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.

4.5. EFFECT ON ENVIRONMENT AND AQUATIC ECOSYSTEM

- Increase turbidity, reduce DO to lead 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, cause fish

dead.

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

4.6. EFFECT ON HYDROLOGY

Following the data supplied by the Irrigation Department, Duy Tien district, Ha Nam

province, average flow rate (in August) of Giat river at the section through Ha Nam province is

around 22.36 m3/s, equally to 22,360 l/s.

The wastewater volume of CEPT of Hoa Mac IZ is about 1500 m3/day, equally to 17.36

l/s. This volume is not significant that can’t increase the water flow or the change hydraulic

regime of receiving source.

4.7. EFFECT ON AIR

The maximum capacity of CETP of Hoa Mac IZ phase 1 is 1500 m3/day. They could emit

odor, H2S, Hydrocarbons, Mercaptan among others affecting to areas near the outlet. However

currently there is no detected odor from the Hoa Mac IZ Treatment Plant’s discharges, and was

reflected through the surveying of residents living along project area. Hence it can be concluded

that the discharge wastewater does not affect local air quality.

87

4.8. EFFECT ON RISK AND ACCIDENTS

The large flow may cause a temporary disturbance of the channel and river, which may

cause dangerous, unsafe for small boats moving through the discharge sewer area. However as

small effluent of 1500 m3/

day, equally to 17.36 l/s and at Giat and Chau Giang River no boat is

here because these rivers are for agricultural irrigation and domestic water supply, therefore the

ability to happening risks and accidents is not reality.

4.9. SOCIAL – ECONOMIC IMPACTS AND DOWNSTREAM WATER USE

Wastewater from the treatment facility contains organic substances (BOD5, and COD),

causing turbidity increase in Giat River water, offensively odor at the outlet. The effluent

discharge can affect to socio-economic activities of residents living around effluent area.

However, with the discharge flow if 1500 m3/day and water quality after treating fitting national

standard of QCVN 40:2011/BTNMT column A (kq=1.0; kf =0.9) that influences are not

significant.

4.10. CUMULATIVE IMPACTS

The water quality and flow of Giat and Chau Giang River will be affected after

discharging WW of CETP of Hoa Mac IZ into there. The influence is not significant for rivers

because of small flow and water quality that meets national standard.

To analyze the accumulated impacts of the project toward Giat and Chau Giang River, we

will have to analyze the discharge receiving capacity of Giat and Chau Giang River. The

assessment will be based on Circular 02/2009/TT-BTNMT dated 19/3/2009 of the MONRE.

4.10.1. Giat River pollution load analysis

Pollution loads of Giat River can be analysed by the limits of polluting parameters in Giat

river water. It can be presented in table below:

Table 4-19. Pollutant concentrations of Giat River

Parameter BOD COD SS As Pb Cd Hg

Ctc (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 B1

4.10.1.1. Maximum pollution load

The max pollution loads that surface water source can receive are calculated as below

equation:

Ltd = (Qs + Qt) x Ctc x 86.4

When:

- Ltd: Max pollution load of that water sources with a certain pollutants;

- Qs: Flow rate of Giat river Qs= 22.36 m3/s;

- Qt: Wastewater flow, Qt = 1500 m3/day = 0.017 m

3/s;

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

88

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

below table:

Table 4-20. The max pollution load that nearby surface water source can receive


Qs + Qt (m3/s) 22.377 22.377 22.377 22.377 22.377 22.377 22.377

Ctc (mg/l) 15 30 50 0.05 0.05 0.01 0.001

Ltd (kg/day) 29000.59258001.18 96668.64 96.669 96.669 19.334 1.933

4.10.1.2. Current pollutant loads

The current pollutant loads in the discharge source receiving is calculated as below

equation:

Ln = Qs x Cs x 86.4

When:

- Ln: Current Pollution Loads in receiving water body;

- Qs: Flow rate of Giat river, Qs= 22.36 m3/s;

- Cs: Max concentration of certain pollutants in the river before receives the waste water

discharge;

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

The current pollution loads will be presented in below table:

Table 4-21. The current pollution loads


Qs (m3/s) 22.36 22.36 22.36 22.36 22.36 22.36 22.36

Cs (mg/l) 10 25 118 0.0021 0.002 0.0002 0.0006

Ln (kg/day) 19319.04 48297.6 227964.7 4.057 3.864 0.386 1.159

Note: Cs is the average concentration of result of surface water quality of Giat river on

December, 10th

2013 that was periodic monitoring result of Hoa Mac IZ.

4.10.1.3. Pollutant load from discharge source

Pollutant load from discharge source will be calculated as below equation:

Lt = Qt x Ct x 86.4

When:

Lt: Pollution load in effluent (kg/day);

Qt: Wastewater flow rate, Qt= 0.017 m3/s;

Ct: Max concentration of pollutants in wastewater;

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

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

89

Table 4-22. Pollutant loads from discharge sources


Qt (m3/s) 0.017 0.017 0.017 0.017 0.017 0.017 0.017

Ct (mg/l) 30 75 50 0.05 0.1 0.05 0.005

Lt (kg/day) 44.064 110.16 73.44 0.073 0.147 0.073 0.007

Note: Ct was calculated in hypothesis that water quality after treating is meeting with national

standard QCVN 40:2011/BTNMT, column A (Kf=1.0, Kq=0.9)

4.10.1.4. Giat River load receiving capacity

Giat River pollution load receiving capacity will be calculated as below equation:

Ltn = (Ltd – Ln - Lt) x Fs

When:

- Ltn: Giat River pollutant load receiving capacity (kg/day);

- Ltd: max pollution load of that water sources with a certain pollutants;

- Ln: Current Pollution Loads in receiving water body;

- Lt: Pollution load in effluent (kg/day);

- Fs: safety coefficient, Fs = 0.3 – 0.7, the project choice Fs = 0.5.

Giat River pollution loads receiving capacity after received the discharge from the CETP

can be summarized as below:

Table 4-23. Giat River pollution loads receiving capacity after received the discharge from the

CETP


Ltd (kg/day) 29000.592 58001.18 96668.64 96.669 96.669 19.334 1.933

Ln (kg/day) 19319.04 48297.6 227964.7 4.057 3.864 0.386 1.159

Lt (kg/day) 44.064 110.16 73.44 0.073 0.147 0.073 0.007

Ltn (kg/day 4818.748 4796.72 - 65684.8 46.269 46.329 9.437 0.383

Conclusion: Giat River, having received the treated wastewater from the IZ will still be able to

sustain the loads of parameters BOD, SS, As, Pb, Cd, Hg and remain within national standards.

SS levels are already over the river maximum pollution loads; thus the additional SS load will not

in themselves cause a change in water quality of the canal with respect to existing standards.

4.10.2. Chau Giang River pollution load analysis

Chau Giang river pollution load can be analyzed by the limits of pollutants in Chau Giang

River. It can be presented as below table:

Table 4-24. The limitation values of pollutants in Chau Giang River


Ctc (mg/l) 4 10 20 0.01 0.02 0.005 0.001

Note: Limitation value Ctc is based on QCVN 08:2008/BTNMT, column A1

90

4.10.2.1. Max Pollution load

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

below equation:

Ltd = (Qs + Qt) x Ctc x 86.4

Of which:

- Ltd: max pollution load of that water sources with a certain pollutants;

- Qs: Flow rate of Chau Giang river in dry season, Qs= 9.6 m3/s;

- Qt: Flow rate of wastewater, Qt = 22.317 m3/s (flow rate of Giat river + flow rate of CEPT of

Hoa Mac IZ);

- 86.4 is the coefficient 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 4-25. The max pollution load that nearby surface can receive


Qs + Qt (m3/s) 22.317 22.317 22.317 22.317 22.317 22.317 22.317

Ctc (mg/l) 4 10 20 0.01 0.02 0.005 0.001

Ltd (kg/day) 11030.52 27576.29 55152.58 27.576 55.153 13.788 2.758

4.10.2.2. Current pollutant load

The current pollutant load can be calculated as below equation:

Ln = Qs x Cs x 86.4

When:

- Ln: The current pollutant load in receiving water body;

- Qs: Flow rate of Chau Giang river in dry season, Qs= 9.6 m3/s;

- Cs: Max concentration of pollutants in the river before receiving the wastewater

discharge;


Calculation results of the current pollutant loads are presented as below table:

Table 4-26. The current pollutant load


Qs (m3/s) 9.6 9.6 9.6 9.6 9.6 9.6 9.6

Cs (mg/l) 1.55 2.86 15.8 0.002 0.002 0.0002 0.0005

Ln (kg/day) 1285.632 2372.198 13105.15 1.659 1.659 0.166 0.415

Note: Cs is the average concentration of result of surface water quality of Chau Giang river on

December, 10th

2013 that was periodic monitoring result of Hoa Mac IZ.

4.10.2.3. Pollutant load from discharge source

The pollution load from discharge source will be calculated as below equation:

Lt = Qt x Ct x 86.4

91

When:

- Lt: Pollutant load from discharge source;

- Qt: wastewater flow rate, Qt= 0.017 m3/s;

- Ct: Max concentration of certain pollutants in discharge;


The pollution load from discharge source will be presented as below table:

Table 4-27. The pollution load from Giat river into Chau Giang river


Qt (m3/s) 0.017 0.017 0.017 0.017 0.017 0.017 0.017

Ct (mg/l) 5.55 12.86 35.8 0.012 0.022 0.0052 0.0015

Lt (kg/day) 8.152 18.889 52.583 0.018 0.032 0.008 0.002

Note: Ct is average concentration of pollutants in the water quality results of Giat river and

concentration of wastewater after treating with hypothesis that they are meeting with national

quality QCVN 40:2011/BTNMT, column A.

4.10.2.4. Chau Giang River pollution load receiving capacity

Chau Giang river pollution load receiving capacity will be calculated as below equation:

Ltn = (Ltd – Ln - Lt) x Fs

When:

- Ltn: Chau Giang river pollution load receiving capacity (kg/day);

- Ltd: Max pollution load of that water sources with a certain pollutants (kg/day);

- Ln: The current pollutant load in receiving water body (kg/day);

- Lt: Pollution load from discharge source (kg/day);

- Fs: Safety coefficient, Fs = 0.3 – 0.7, the project choice Fs = 0.5.

Chau Giang river pollution load receiving capacity after receiving water from Giat River

(including discharge water from CETP of Hoa Mac IZ) will be presented as below table:

Table 4-28. Chau Giang River pollution load receiving capacity after receiving water from Giat

River and WW from the CETP of Hoa Mac IZ


Ltd (kg/day) 11030.52 27576.29 55152.58 27.576 55.153 13.788 2.758

Ln (kg/day) 1285.632 2372.198 13105.15 1.659 1.659 0.166 0.415

Lt (kg/day) 8.152 18.889 52.583 0.018 0.032 0.008 0.002

Ltn (kg/day) 4868.366 12592.6 20997.42 12.950 26.731 6.807 1.170

Conclusion: Chau Giang River, after received the treated wastewater from the IP and Giat River

will still be able to sustain the loads of parameters BOD, COD, SS, As, Pb, Cd and Hg.

Cumulative impact assessment was conducted for the CETP of Hoa Mac IZ. It is not enough

information to synthesize and evaluate impacts of Chau Giang River for the other projects in the

same valley.

92

CHAPTER 5: POLLUTION MITIGATION MEASURES

4.11. ENVIRONMENTAL MANAGEMENT PLAN (EMP)

The EMP is developed to help the Investor and contractors minimize the environmental impacts

during construction and operation phases of the Project. The units involved in the environmental

management process include:

Table 0-1. Concerned Agencies in the Environmental Management Programs

Agencies Main obligations

Construction

contractors

To implement Mitigation Measures against the proposed impacts.

To report Environmental Pollution Mitigation and Control Measures

to the Company.

The Company’s

Consultant

To supervise and evaluate implementation of the EMP proposed in

the EIA reports

To report Hoa Mac IZ Development Management Co., Ltd

Consultancy on

environment

monitoring

To supervise and evaluate the environmental quality on basis of

monitoring parameters proposed in the reports.

To implement interviews to the community to record feedbacks and

evaluations of local people on the Project’s EMP

To report Hoa Mac IZ Development Management Co., Ltd

Department of Natural

Resources and

Environment (DONRE)

To supervise and evaluate implementation of Impact Mitigation

Measures proposed in the construction phases via reports of Hoa

Mac IZ Development Management Co., Ltd on actual test results.

Environmental Codes of Practice (ECOPs) are encoded Environmental Impact Mitigation

Measures to help the units involved in environmental management processes easily identify and

manage these impacts, if any, during construction and operation phases of the project and the

environmental risks.


4.11.1.1. Water pollution mitigation measures

Domestic wastewater from the operations of the workers should be collected and treated before

being discharged into the septic tank to the environment. 200 liter mobile toilets are used as a

impact mitigation measure for domestic wastewater of workers.

To repair, maintaint and replace the construction equipment accessories, oil, clout that must be

collected comprehensively to avoid unexpected spilling on site.

To design rainwater drainage ditches surrounding the site to prevent from contamination of

impurities before discharging to the environment.

4.11.1.2. Mitigation Measures for Impacts of SW and HW

SW, during construction phase, damages building materials such as rubble, sand and gravel, dead

cement, the waste external protection devices, etc and domestic waste of workers on site as

protective objects, cement bags, etc. The SW must be treated in a regular, concentrated and

classified manner.

Construction waste: Limit to generate waste in construction by reasonable calculation and use of

raw materials; reminding workers the sense of saving, strictly management and supervision of the

works. The waste is inert, non- toxic agents such as broken bricks, sand residual sand and soil

93

which will be used for site clearance. The Contractors shall collect, classify and store

construction waste regularly in the prescribed locations on site. The storage locations must be

convenient for dumping. They are designed with hard walls, cover, and temporary drainage

ditches, etc to avoid losses and leakage of waste into the environment. The construction waste

will be transported everyday to proper sites. Other wastes such as cement bags, protective

equipment, steel pieces, welding rods, etc are collected and transported to designated places for

reuse or resale to the wanting units. The Project Management Unit or the contractors shall sign

the contracts with the functional units which are specialized in transportation of waste under strict

and regular supervision of the Project Management Board, environmental police, traffic and

public work management authorities, etc to avoid illegal dump of construction waste.

Domestic waste: Is concentrated in 500 liter dust bins near the tents and temporary works to

secure to protect the environment and hygiene and to sign the contracts with the local

Environment Service Suppliers to collect and dispose waste under current current regulations.

The created hazardous solid waste such as oily rags and wasted oil must be collected in the

specialized storage tanks and cans with sealed cover to secure hygienic storage and treated by

hired functional agencies.

4.11.1.3. Mitigation measures to the air quality

To use tarpaulins to cover the trucks’ boot during transporting construction materials such as

sand, stone on roads.

For materials with high dust pollutants (building sand), it is possible to moisten it, where

necessary, in order to minimize impacts on air.

To water to prevent from dusts in sunny, hot, windy days in the areas where dusts are created;

To arrange reasonable transportation routes. To check means of construction to secure the

equipment and machinery in the best engineering conditions;

To minimize reciprocal and accumulated impacts in construction activities of the Project and

operations of the existing CETP;

The vehicles getting out the site must be cleaned to prevent the air from soil spilling over the

roads;

The means of transportation must limit their speeds before getting in the project site;

To apply the appropriate construction methods, and to mechanize all operations during the

construction phase.

4.11.1.4. Impact Mitigation Measures for Soil Quality

The impacts during the construction phase of the Project on the soil are insignificant. Therefore,

the Investor does not implement soil pollution mitigation measures.

94

Table 0-2. Summarized plan for mitigation measures during construction phase

Issues Code Mitigation measures applied Vietnamese

code/regulation

Execution Supervision

Air pollution

WW1

Construction vehicles must undergo a regular

emissions check and get certificated named:

"Certificate of conformity from inspection of quality,

technical safety and environmental protection"

following Decision No. 35/2005 / QD-BGTVT on

21/07/2005;

• TCVN 6438-2005:

Road vehicles.

Maximum permitted

emission limits of

exhaust gas;

• Decision

No.35/2005 QD-

BGTVT on quality

control, technical

safety and

environmental

protection for

vehicles imported

into Vietnam.

• QCVN 05:

2009/BTNMT –

National technical

regulation on

ambient air quality

Contractors IZMB of Hoa

Mac

WW2 Maintant vehicles and equipment daily and every 6

months (or 8,000 km of road)

WW3 Do not burn waste on site

WW4 Monitoring air quality, exhaust emissions, dust, noise

and ambient air quality

Dust

Emissions

D1

Removing waste out of construction site as soon as

possible

• QCVN 05:

2009/BTNMT –

National technical

regulation on

ambient air quality


Mac

D2

Cover transport vehicles to prevent dropping of soil,

sand, materials or dust during the transportation.

D3 Contractor’s responsibility is to comply national

regulations on ambient air quality

95

D4

Contractors ensure the amount of dust emission that is

smallest and not being inconvenient for local residents.

Contractor’s responsibility is to carry out dust

controlling plan to maintain safety working

environment and mitigate the disturbance to the

residential / around housing.

D5

Contractor’s responsibility is to carry out measures to

mitigate dust emission as necessary as (such as

spraying car, spraying water on the construction road,

covering area of material storage, etc…

D6

Excavated soil and material storage expanse should be

covered to prevent dispersal by wind and the position

of the raw materials stockpile has to be considered

wind direction and the location of sensitive areas.

The

disturbance

of vegetation

and

ecosystems

TR1

The Contractor shall prepare measures to protect

vegetation outlined in the environmental management

plan approved by the building construction engineer,

according to relevant regulations. Clearance plan must

be approved by the Construction Supervision

Consultant and strict compliance by the contractor

• Law of

environmental

protection No.

52/2005/QH11


Mac

Noise and

vibration

N1 To avoid constructing in the night (10 pm to 6 am)

• QCVN

26:2010/BTNMT –

National technical

regulation on noise

N2

The contractor is responsible for compliance with the

relevant Vietnam legislation with respect to noise and

vibration

• QCVN

27:2010/BTNMT:

National technical

regulation on

vibration

96

N3

All vehicles must have appropriate "Certificate of

conformity from inspection of quality, technical safety

and environmental protection" following Decision No.

35/2005/QD-BGTVT to avoid exceeding noise

emissions from poorly maintained machines

Increasing

turbidity in

surface water

TU1 Ensure the technical requirements on wastewater

treatment and run-offs


Mac

TU2 Good management of soil erosion and sediment

Domestic

wastewater

of workers

WW1 Build temporary or use portable toilets in the IP (if

necessary) • QCVN

14:2008/BTNMT:

National technical

regulation on

domestic

wastewater


Mac

WW2 Build a septic tank (if required) and collect wastewater

and sewage when the construction finishes

WW3 Contractor has responsibility to comply Vietnam law

relating to wastewater discharged source

WW4

Wastewater over permissible values set by Vietnam

standards/regulations must be collected in a septic tank

and transported from the field by a unit licensed

collection

Drainage and

sedimentatio

n control

SW1 Periodic dredging of sewers • TCVN 4447:1987

National standard

on earth works,

codes for

construction,

check and

accetance.

• Circular

22/2010/TT-BXD

about safety in

construction work

• QCVN

08:2008/BTNMT -


Mac

SW2

To avoid water runoff containing sediment can affect

water resources, it is necessary to build works

decanting sludge, making slowly flow rate or changing

flow direction and sediment traps to create vegetation.

SW3

To ensure drainage system is always maintained, no

sludge and other obstructions and periodically check

the condition of the drainage system

SW4 To maintain the current conditions and not disturb the

position of the area by the construction activities

SW5

The excavation, digging and creating slope must be

maintained with the appropriate specifications of

construction for the outfall

97

SW6

The Contractor shall comply with the detailed design

of the drainage system including construction plan,

recommence to prevent rain caused local flooding or

erosion of soil in the area protected, resulting in

sediment affect local water (drainage layout of the area

around the building to collect rainwater runoff or

sediment deposition ditch before flowing to water

source)

National technical

regulation on

surface water

quality

Underground

water

pollution

caused by

leackage of

wastewater

GW1 Leackages in the drainage system must be detected and

repaired promptly

QCVN

09:2008/BTNMTNati

onal technical

regulation on

underground water

quality


Mac

Solid waste

management

W1

Prior to construction, process of control solid waste

(storage provide bins, schedule collection and disposal,

etc.) must be prepared by the contractor and the

construction management plan and monitored carefully

during construction.

• Decree

59/2007/ND-CP on

solid waste

management


Mac

W2 Prior to construction, all discharge permits must be

passed

W3

Solid waste can be temporarily stored at the site in an

area approved by the construction supervision and

local governments and related IZMB to collect and

treat. In case if it is not removed from the construction

site, solid waste or construction waste will be treated at

the site determined and having the acceptability of the

construction supervision consultant inline with solid

waste management plan. In all cases, the contractor

shall not dispose of any materials in sensitive areas,

natural environment or water sources.

W4

Waste storage area must be covered, waterproof,

weather protected and closed to the animal

scavengers.

W5 No burning, disposal or dumping of solid waste

98

Chemical

and

hazardous

waste

HW1

Chemical waste in any form must be disposed of in

appropriate landfills approved and according to the

request of local authorities. The contractor must have a

certificate of hazardous treatment treatment.

• Regulation No.

23/2006/QD-

BTNMT: List of

hazardous waste

• Circular No.

12/2011/TT-

BTNMT: About

Hazardous Waste

Management


Mac

HW2

Used oils, lubricants, cleaning materials, etc. from

vehicle maintenance and machinery will be collected

in the tank and removed from the field by companies

in the recycling and disposal of hazardous waste

approved.

HW3

The relevant authorities (IZMB and the Department of

Natural Resources and Environment) promptly notify

the case of oil spills, chemical, or incidents. Prepare

and start remedial measures after any oil spill problem

or accident. In this case, the contractor shall provide a

report assessing, remedial activity done, the

consequences / damage from the spill, and proposed

measures overcome.

HW4 Toxic chemicals stored properly and labeled and

locked containers.

HW5

To propagate, training to raise awareness and response

measures for workers about toxic chemicals in the

workplace

Traffic

management

Prior to construction, making the consultation with

local governments, communities and the traffic police

• Road Traffic Law

No.

23/2008/QH12

• Construction Law

16/2003/QH11

• Circular

No.22/2010/TT-

BXD: egulations

on labor safety in

construction work


Mac

99

Safety for

workers and

residents

HS1

Limiting speed at construction site

• Circular No.

22/2010/TT-BXD:

Regulations on

occupational

safety in

construction work

• Directive

02/2008/CT-BXD

reorganize and

strengthen

measures to ensure

occupational

safety, ccupational

health units in the

building industry

• TCVN 5308-91:

Technical

regulations for

safety in

construction

• Decision No.

96/2008/QD-TTg

of demining.


Mac

HS2

Avoid transport during peak hours to reduce traffic

congestion

HS3 Installation of lighting at night

HS4

Equip workers with protective equipment

(eg equip with ear plugs and use in case having noise

in the work area by installation of pipe, mixing,.., to

control noise and protect workers)

TCVN 5308-91:

Technical regulations

for safety in

construction

• Decision No.

96/2008/QD-TTg of

demining. HS5

Training workers on safety regulations and ensuring

their compliance

HS6 Ensure safety of construction site , security and order

HS7 Provide protective clothing or protective gloves if they

expose to chemicals and sludge

100

HS8

Prepare and implement action plans to deal with risks

and emergency situations (ie in complex situations,

stopping construction and implementation of necessary

measures) as well as preparing services emergency at

construction site.

HS9 The Contractor shall comply with the regulations of

Vietnam on labor safety.

Communicat

ion with the

local

community

C1 Provide local communities and workers at the site with

the ECOPs (Vietnamese) and the project

Environmental Protection documents related

• Decree No.

73/2010/ND-CP:

The sanctioning of

administrative

violations in the

field of security

and order, social

security


Mac

C2 Dissemination of information of the project for

affected groups (such as local governments, businesses

and households affected, etc.) through community

meetings before starting construction, supply mode of

contact from that point the interested parties can get

information about the active site, project status and

results of the project;

Provide all the information, especially technical

solutions, with understandable language for the general

public and information for interested citizens and

officials through the preparation of an information

sheet and informed in the press while conducting the

work of the project.

C3 To supervise community related and require

information as well as the progress of the project;

C4 Feedback telegrams and letters written timely and

accurately

101


4.11.2.1. Impact Mitigation Measures for Water Pollution

(1). Industrial wastewater

For industrial WW, factories in IZ are required to use pre-treatment technology to make sure that

industrial WW reach column B of QCVN 40:2011 before connecting to the CETP.

Treated WW quality must be supervised to reach the Regulation QCVN 40:2011/BTNMT

(Column A) before discharging into the receiving source.

The Investor installed the AMS, it is possible to control such parameters as flow rate, pH, DO,

TSS, COD after treatment.

(2). Domestic WW

Domestic WW from toilets of the CETP operators shall be collected and treated by septic tanks.

(3). Rainwater

Rainwater is collected on basis of the general rainwater drainage system of the IZ via culverts on

sidewalks.

(4). Groundwater

To monitor and control the groundwater quality in the region; to prevent penetration from

anaerobic tank and leakage in the connection points or transitions in WW pipelines

(5). Pollution in outlets

To regularly monitor water quality at the outlets;

To construct warning signs at appropriate locations;

To regularly dredge manholes, drainage system;

To reduce the risks of overflow of WW;

To regularly check preliminarily treated WW quality of tenants.

4.11.2.2. Impact Mitigation Measures for Sludge

The waste sludge generated by Hoa Mac IZ’s CETP is collected, transported and treated by

URENCO 11 under the Contract signed with the Investor and the regulations.

Waste sludge Transportation process from Hoa Mac IZ’s CETP

Sludge from WW treatment process of Hoa Mac IZ’s CETP is dewatered via sludge compressor,

then packed to secure to cause no leakage to the environment and labeled to warn HW before

storing in the slugde warehouses.

URENCO 11 Company shall periodically collect hazardous sludge. Use of specialized vehicles

for transportation of hazardous sludge may reduce leakage along the route from Hoa Mac IZ’s

CETP to the treatment area of URENCO 11 because dust may contain heavy metals and

pathogens that cause diseases, pollutions to foods and others skin and respiratory diseases.

Workers must be equipped with appropriate protective clothes and avoid exposing their open

injuries to the sludge.

102

4.11.2.3. Impact Mitigation Measures for Air

The impacts on air environment in operation phase of the Project are mainly considered in the

following aspects: Noise, toxic gases, bad odors arising from biological treatment tanks.

However, the noise and odors generated in the CETP are expected to be difficultly spread to the

residential areas if application of the buffer area under Vietnamese current Regulation QCXD

01/2008/BXD. Radius of the buffer area must be at least 300 m so that the odor and gas

emissions in the treatment area shall be less absorbed and dispersed

Other mitigation measures include:

- To relief noise caused by operations of machinery by periodical maintenance and correct

use of design capacity;

- To periodically monitor the air environment surrounding the CETP’s region;

- To grow more trees in the buffer zone to create the landscape and to prevent from

spreading odors;

- To handle incidents or accidents during operations;

- To clear the site surrounding the artificial ditch in the IZ.

4.11.2.4. Impact Mitigation Measures for Soil Quality

The operation of the Project does not affect the quality of soil, thus, the Investor does not need to

apply soil pollution mitigation measures.

4.11.2.5. Impact Mitigation Measures for SW

SW generated in the operation phase is mainly Domestic waste of operators; packages, bottles,

chemical containers, biological membrane.

The Domestic waste must be daily collected and transported under the provisions issued by Hoa

Mac IZ Management Board.

Such SW as packages, bottles, chemical containers, biological membrane must be classified and

labeled, then periodically collected and processed in accordance with current regulations.

103

Table 0-3. Summarized plan for mitigation measures during operation phase

No Impacts Code Intensity Mitigation measures Execution Supervisors Source of

funds

Difficulties /

barriers

1 CETP Outlet

discharge/

Effluent

pollution

OD1 Long-term - Regular monitoring the

effluent and river water

quality at the outlet discharge

- Set up warning signs at

suitable locations

- Regular dredging manhole,

sewer

- Reduce the spilling of WW

- Control effluent from

industrial activities in the IZ

before entering the CETP

CETP

operation

Unit

Hoa Mac

IZMB, Ha

Nam DONRE

The operating

budget of

Hoa Mac

IZMB

- Worker’s

awareness

- Factories and

tenants in IZ

2 Groundwater

pollution

OD2 Long-term - Monitoring and controlling

groundwater quality in the

area

- Prevent penetration of

anaerobic tank leackage

- Preventing leakage at

connections or transitions in

the WW pipes

CETP

operation

Unit

Hoa Mac

IZMB, Ha

Nam DONRE

The operating

budget of

Hoa Mac

IZMB

3 Operational

problems

OP1 Long-term - Training O&M for workers

- Monitoring of water quality

to evaluate the efficiency of

the operation

- Installing the signs to warn

people of the risks relating to

the water bodies

- Noticing the communication

means

- Repairing as soon as

accident happens

- Building bio-pond

CETP

operation

Unit

Hoa Mac

IZMB, Ha

Nam DONRE

Lack of

training for

employees

104

4 Odor O1 Long-term` - Ensuring the radius of

buffer zone at least 300m

- Planting trees in the buffer

zone to create landscape and

prevent odor emission

- Regular maintenance of

treatment units

- Solving operational

accidents timely

- Clearance of surrounding of

the ponds

CETP

operation

Unit

Hoa Mac

IZMB, Ha

Nam DONRE

Lack of budget

for training

O&M

5 Noise N1 Long-term - Planting trees

- Appropriate O&M regime

CETP

operation

Unit

Hoa Mac

IZMB, Ha

Nam DONRE

6 Waste from

operation

WO1 Long-term - A good plan of collecting

and treatment

- Training for workers

- Regular collection of sludge

CETP

operation

Unit

Hoa Mac

IZMB, Ha

Nam DONRE

7 Sludge

management

MS1 Long-term - Checking sludge quality in

order to have a suitable plan

- Drying and using as

fertilizer or treating at landfill

based on sludge quality

(analyzed)

- Reducing the leakage along

the haulage distance because

dust could bear heavy metals

and pathogens which results

in food contamination and

diseases related to skin and

respiratory system

- Workers must be equipped

with appropriate safety

clothes and prevent sludge

contact to open wounds:

CETP

operation

Unit

Hoa Mac

IZMB, Ha

Nam DONRE

Lack of

transportation

105

gloves, clothes and glasses.

- Dry sludge will be treated in

landfill or buried as sludge

quality doesn’t meet

standards

8 Health and

Safety

HS1 Long-term,

frequently

- Training working safety and

industrial sanitation

- Periodic checking health for

workers

- At least two workers

working in an operating shift

- Keeping a good personal

hygiene

- Prepare specific guidelines

for operation of CETP

CETP

operation

Unit

Hoa Mac

IZMB, Ha

Nam DONRE

106

4.12. RISK MANAGEMENT

The quantity of work of the Project is small and short-term so it is easy to control and

prevent from environmental damages by applying below measures:

4.12.1. In the construction phase

(1). Fire & Explosion Prevention and Fighting

The workers on site must be trainned and instructed in term of Fire & Explosion Prevention and

Fighting Measures;

The flammable solvents and fuels are stored in separate warehouse, and kept away from the

potential sources of ignition and spark-ignition;

Investment in fire & explosion resistant equipment in the fuel storage area on site;

Fully equipping fire & prevention equipment in accordance with current laws and regulations;

In case of any fire incident, the Investor shall coordinate with Ha Nam Province Fire Fighting

Committee to respond to the incident.

(2). Traffic Accident Mitigation Measures

Regulating the means of transport in the project reasonably and correctly transporting;

Communicating and stimulating officers and workers as well as owners of vehicles to well

comply with traffic safety laws and regulations.

(3). Traffic safety control, health care and incident prevention and fighting measures

In compliance with regulations on labor safety when making the construction organization plan,

i.e. construction measures; machinery and equipment outline, labor accident prevention

measures, workers’ use of personal protective equipment such as helmets, masks, gloves,

protective clothes, goggles, shoes, boots as working on site;

Closely monitoring the construction phase under the required procedure, minimizing labor

accidents;

Building fire prevention and fighting programs and sufficient devices equipped to handle any

incident.

4.12.2. In the operation phase

4.12.2.1. Labor safety and hygiene measures

Safety to the equipment:

The CETPs’ equipment consists of many types, depending on the features, structure and function

that IZ Management Board will conduct labor safety control activities under the State’s

Regulations;

The IZ Management Unit shall install the lightning systems at the highest position of the plant to

secure safety to the Plant and labor safety, especially lightning safety in wet seasons;

For devices requiring power supply and sufficient protection system, earth wire, checking their

safety before operation. In addition, the IZ Management Unit shall establish the Power Safety

Regulations to the Plan under the provisions;

For all other machinery systems in the plant, the IZ Management Unit shall establish the

107

Regulations for each equipment on basis of their structure, capacity, and few unique features of

each equipment to secure safe operations.

Labor safety for workers:

Training and guidance for workers to know to operate the Plant safely. On the other hand, the

Investor shall coordinate with the Labor Safety Committee of the Department of Labor, Invalids

and Social Affairs of Ha Nam Province to provide trainings on safety rules and operation of

specific equipment in each stage of production to facilitate the workers to fully understand their

working position and steps to do to secure safety in production;

Sufficiently equipping and provision of personal protection equipment to workers on basis of

layout of workers in each stage of production in line with their jobs.

In addition to the above mentioned pollution control methods, the pollutant mitigation measures

for the workers’ health in the Plant shall be applied comprehensively as follows:

- To well follow the programs on periodical checking and monitoring programs to

the officers and workers in the plants;

- To secure microclimate factors and working conditions to meet the requirements

and standards issued by Ministry of Health to secure workers’ health;

- To control noise to meet requirements and to avoid occupational diseases created

by production process;

- To provide trainings and information on hygiene and safety.

4.12.2.2. Preventive measures and Fire & Explosion Response

Fire & Explosion Safety Control Measures:

Fire safety measures:

There is fire resistant equipment to timely cure the problem occurred;

Workers will be provided with trainings, guidance of fire & explosion prevention and fighting

measures;

The flammable fuels are stored in separated warehouses, kept away from potential ignition

sources, the solvent storage tank will be installed with the safety valve, the temperature

monitoring device, automatic fire alarms;

There are fire alarm systems, communication systems, alarms. The fire-fighting equipment will

be checked regularly and always in a ready state;

The workers are not permitted to smoke or bring lighters, matches, ignition tools via friction,

sparks, etc in flammable areas;

Investment in fire & explosion-proof equipment, layout of fire extinguishing systems around the

region.

Equipment:

The fire extinguishing system is provided, including:

- Water intake system for fire fighting;

- Steam extinguishers, foam extinguishers;

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- Fire resistant equipment and boxes for all plants;

- Water supply for fire fighting, including lakes and nozzles and pumps;

For the Operating House:

Providing suction equipment, exhaust fan system for ventilation;

The electrical system is designed and installed with safety devices; Regularly checking to

discovery of short-circuit and power failure;

The flammable areas such as warehouses of materials, chemicals, etc will be provided with the

automatic fire alarm systems, water tanks, sand to extinguish the fire. Sufficient provision of fire

extinguishers and fire fighting equipment

Fire & explosion prevention, fighting response procedure:

In the flammable areas, it is required to install fire alarms, communication system, alarms. The

fire-fighting equipment will be checked regularly and always in a ready state;

The machinery, equipment working in high temperature and pressure is required to periodical

check and register;

The fuel types are stored in separated wareshouse which is kept away from potential sources of

ignition and spark. Safe distance among the works is about 12-20 m for fire trucks to easily

approach;

The workers are not permitted to smoke or bring lighters, matches, ignition tools via friction,

sparks, etc in flammable areas;

IZ Management Unit shall coordinate with the Fire Fighting Committing of Ha Nam Province to

construct the fire fighting plan and to arrange the functional team and workers to practice under

the established plan.

4.12.2.3. Preventive measures and Fuel Leakage Response

To prevent and respond to fuel (diesel oil) leaking incidents, the Investor will cooperate with the

functional authorities to strictly control the engineering systems of storage equipment, means of

transportation and to establish the response plans, as follows:

- To regularly check the safety of the fuel tanks to repair, replace and restore fuel leakages

promptly;

- To make the fences around fuel tanks, to place fire and combustible materials warning

signs , prohibition signs in the distance of 5- 10 m from the tanks;

- Means of transportation of petroleum, chemicals (such as tank trucks) will be eligible

and satisfactory to the current safety standards, technical regulations as transporting on

roads;

- To propagandize and remind officers and workers on the Plant to comply with the

Regulations on Fire Prevention and Fighting during the working process.

On the other hand, to prevent and treat fuel and chemical leakage incidents effectively, the

Investor will cooperate with authorities to prepare the prevention measures, responds, supervision

and strict test to the engineering equipment in the warehouses, means of transportation of fuels

and chemicals.

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4.12.2.4. Lightning system

Installation of anti-lightning systems in the highest position of the plant to attract lightning in

rains and storms;

Installation of the lightning and static electricity collection system and improve the systems on

basis of new technologies to secure high safety to the Project’s operations;

Pulse ground resistor <10 Ω as soil resistor < 50,000 Ω/cm2. Pulse ground resistor > 10 Ω as soil

resistor > 50,000 Ω/cm2;

Installation of the general lightning protection systems to entire project site and each plant,

warehouse;

Use of positive lightning arresters, lightning pillars which are arranged to protect entire project

with the design height of 10 – 14m;

Investment on basis of infrastructure construction progress.

4.12.2.5. CETP’s Non-operation Response

CETP’s non-operations are caused by suspension of machinery and equipment of the station such

as pump, agitators, chemical magnet machine, etc (due to malfunction or power failure). The

other reason is due to workers’ dissatisfactory operation to cause the death of microorganisms so

the CETP has to temporarily suspend its operations to grow them again. This will cause a large

amount of stagnant and untreated WW and environmental pollution.

This problem can be prevented by regular and periodic inspection of the technical conditions of

the operating equipment, timely repairing and replacing damaged machinery. The operators must

be provided with full technical trainings

When the incident occurs, the Investor will receive discharge of the plants with arising effluents

to the CETPs in allowable time.

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Table 0-4. Summarized plan for mitigation measures for environmental risks

No Issue/Case Action plan/Mitigation measures Execution

1 Complaints from nearby industries and

community on environmental issues of

construction and operation activities

Immediately implement remedial measures if possible

Record in the logbook

Contractors

Discuss with investors, local government to solve

thoroughly the contradictions

Contractors, Hoa Mac

IZMB, Ha Nam DONRE,

PC49

2 Construction or operational accidents First aid and immediately transfer the victim to the nearest

hospital if necessary

Workers and residents

Having warning signs

Making record of the accident

Contractors, CETP, Hoa

Mac IZMB

3 Failure operation of CETP Storage the untreated WW, building bio-pond if possible CETP, Hoa Mac IZMB

Have back-up equipments/facilities

Having the danger signs and report to authorities

Avoid over waste loading from enterprise’s WW

Training the staff on operation, regularly monitoring

Check the design and prepare the new unit of CETP

Prepare for accidental response action plan

4 Improper sludge disposal Contract with relative permitted agencies to disposal

sludge properly if they are found to be hazardous to

environment and human health

CETP

Report and check frequently all emitted amount of sludge

Issue the strict penalties for violation cases

5 Fires Inform authorities (in particular, is that fire police).

Rescue the objects in the danger zone.

Actively isolate the fore with the existing facilities on site.

Contractors,

tenants/industries, CETP,

Hoa Mac IZMB

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, Hoa

Mac IZMB, industries

Support functional units, local government to set up

security perimeter around hazardous areas.

Contractors,


Hoa Mac IZMB

Check the conditions of fire and explosion safety on site,

ensuring the problem does not continue

Contractors,


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Suspension of work if they violate conditions of fire safety Hoa Mac IZMB

6 Electric accidents Disconnect power sources in the incident area and

surrounding areas.

Immediate rescue the objects in the danger zone.

Contractors,


Hoa Mac IZMB

Explore the causes of accidents, checking power sources,

wires and contacts etc.

Make records of accidents Contractors,


Hoa Mac IZMB

7 Floods Disconnect power sources in the incident area;

Immediately transfer the machinery out of the floodplain to

avoid damaging by water.

Implement measures in any way to prevent flood water into

WW storage area to prevent it mixing with floodwater that

cause secondary pollution.

Contractors,


Hoa Mac IZMB

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4.13. COMMUNICATION PROGRAM TO THE COMMUNITY AND COMMUNITY

RELATIONS

The Investor shall make, submit and popularize the EMP in the Headquarter of People’s

Committees of Chau Giang Commune, Trac Van Commune and Hoa Mac Town during the

process of construction and operation of Hoa Mac IZ’s CETP, Phase 1 for public awareness,

supervision and test.

The EMP consists of the following contents:

Organization and operation of the departments in charge of environmental protection

of the project

Planning education, raising public awareness on environmental protection of the

project;

The Investor’s responsibilities for implementation of the solutions, impact mitigation

measures, prevention and response to environmental incidents during the construction

phase and operation of WW treatment systems;

Planning and operation of environmental protection facilities;

Planning and monitoring of emissions; monitoring ambient environment and other

contents during the construction phase and as the CETP is officially operated.

4.14. TRAINING

To strengthen the capacity to respond to environmental incidents which may occur in Hoa Mac

IZ’s CETP, Phase 1, the Investor will implement the following measures:

- The workers who directly work at the CETP shall be trained and guide in terms of

fire & explosion prevention measures.

- Organization of training, assigning tasks to respond to the CETP’s non-operation.

However, this problem can be prevented by periodic inspection of the technical

condition of the operating equipment, timely repairing and replace damaged

machinery, and the workers are trained fully in term of engineering aspects.

- Equipping with sufficient tools and personal protection equipment to workers in

line with their jobs and on basis of labor outline in each operation stage.

- Training and guidance for workers on labor safety in the Plant.

- To know about the safety of the plant. On the other hand , IZ Management Board

will coordinate with the Safety Committee of the Department of Labor , War

Invalids and Social Affairs of Henan Province training safety rules and operation

of specific equipment of each stage of production to workers actually grasp and

understand its working position need to do to CETP operation is safe

- Training and guidance for workers to know to operate the Plant safely. On the

other hand, the Investor shall coordinate with the Labor Safety Committee of the

Department of Labor, Invalids and Social Affairs of Ha Nam Province to provide

trainings on safety rules and operation of specific equipment in each stage of

production to facilitate the workers to actually understand their working position

and steps to do to secure safety in production;

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In addition to the above solution, the plans are issued and applied to comprehensively mitigate

impacts of pollutants to the worker’s health in the CETP as follows:

- To well implement the periodic health examinations to the officers and workers in

the Plant;

- To make sure the microclimate factors and working conditions issued by the

Ministry of Health to secure the health of workers

- To control noise under the regulations to prevent from occupational diseases

caused by the production process

- To train and supply the information on safety and hygiene.

4.15. ENVIRONMENT MANAGEMENT ORGANIZATIONS AND RESPONSIBILITIES

FOR THE IZ AND CETP

4.15.1. Division of Environmental Affairs

Division of Environmental Affairs is directly under Hoa Mac IZ Management Unit with the

following designated functions and obligations:

4.15.1.1. Functions

To advise the Director on environmental management, WW treatment plant of the Company and

implement environmental consulting services to clients.

To propose plans, solutions and implementation organization for environmental works, the

operation of the WW treatment plant and environmental consulting services to the companies

inside and outside Hoa Mac IZ.

To coordinate with other functional units and customers to closely manage the environment

affairs of the IZ under "the Regulation for industrial parks, processing zones, hi-tech parks"

attached to the Decree No. 36/CP dated 24th

April 2007 of the Government and the current

regulations.

To organize implementation of operations of the CETP and others relating to the environment in

the IZ.

To test, monitor, operate and restore any incidents of the Station and ww quality of the plants and

tenants in Hoa Mac IZ before discharging to the CETP.

To bear responsibilities for treating ww of Hoa Mac IZ to reach Vietnamese Environment

Standards before discharging to the environment.

To manage, operate and exploit functions of the CETPs to secure their effective operations.

4.15.1.2. Obligations

To construct plans, to organize operations of CETP and projects, economic contracts related to

the environment affairs to submit to the Director for approval and to organize implementation.

To monitor by records, to check and supervise land lessees’ compliance with the Environmental

Protection Act; to correctly follow the Business Registration Certificate. To apply the Quality

Management System ISO 14001:2004 in the Company

To exploit available resources, the effect of innovations, advances in science, technology and

environment in business of the CETP to manage, operate and exploit the Station effectively

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To test, monitor and restore incidents and quality of WW of the CETP and units, plants in the IZ.

To treat WW of Hoa Mac IZ to reach Vietnamese Environment Standards before discharging to

the environment

To coordinate with the Department of Engineering Infrastructure in maintenance of infrastructure

works and technical troubleshooting of WW systems in the Company’s control.

To coordinate with and implement the environmental consulting services; to purchase and sell

scrap; to provide design consultancy, construction supervision services to connect to the WW

system of the Investors in Hoa Mac IZ and clients under the signed economic – engineering –

technology – environment contracts.

To carry out other duties as assigned by the Company's Director.

To implement the Regulations on Organization and Operation of the Company to promote

production and business

To construct operation plans, develop business in line with each phase and assigned duties to

submit the Director for approval and to organize implementation.

To exploit all available resources, to research applications, initiatives and technological, scientific

advances to operate and exploit the machinery and equipment in business

To implement design consulting services, connection, construction, and construction supervision

to connect to the WW system of the Investors in Hoa Mac IZ

To operate and maintain WW infrastructure and the CETP under the Company’s control.

To effectively manage and exploit assets, capitals assigned by the Company in the principle of

continuous improvement of efficiency in production and business.

To correctly comply with the communication – reporting regulations and requirements of the

Company

4.15.2. Departments working in the CETP

4.15.2.1. Functions

To manage and monitor compliance with the environmental regulations under "the Regulation for

industrial parks, processing zones, hi-tech parks" attached to the Decree No. 36/CP dated 24th

April 2007 of the Government. To advise the Director of the Company on matters relating to the

environment work of Hoa Mac IZ; to organize implementation of operations of the CETP and

others relating to the environment in the IZ.

To test, monitor, operate and restore any incidents of the Station and ww quality of the plants and

tenants in Hoa Mac IZ before discharging to the CETP.

To bear responsibilities for treating WW of Hoa Mac IZ to reach Vietnamese Environment

Standards before discharging to the environment.

To manage, operate and exploit functions of the CETP to secure their effective operations

4.15.2.2. Obligations

To implement the Regulations on Organization and Operation of the Company to promote

production and business

To construct operation plans, develop business in line with each phase and assigned duties to

submit the Director for approval and to organize implementation.

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To exploit all available resources, to research applications, initiatives and technological, scientific

advances to operate and exploit the machinery and equipment in business

To implement design consulting services, connection, construction, and construction supervision

to connect to the WW system of the Investors in Hoa Mac IZ- Phase 1

To operate and maintain WW infrastructure and the CETP under the Company’s control.

To effectively manage and exploit assets, capitals assigned by the Company in the principle of

continuous improvement of efficiency in production and business.

To carry out other obligations assigned by the Board of Directors

4.16. ENVIRONMENTAL MONITORING PROGRAM

Purposes

- To control impacts during the construction phase, which is shown in the EIA report and

to check compliance with the environmental standards.

- To check implementation of environmental protection measures during construction and

operation phases on basis of approved EIA report.

- To propose additional mitigation measures if discovery of new impacts.

- To require the Investors to coordinate with the Government’s environmental

organizations in the local and central levels to solve the existing problems related to

environmental protection in the responsibility of the project.

- To assess effectiveness of impact mitigation measures before construction and

operations of the Project.

- To monitor the environment in the construction and operation phases in 4 levels.

4.16.1. Monitoring compliance with mitigation measures and environmental standards

After EIA is appraised by Vietnam Environment Protection Fund (VEPF) and WB, construction

site-specific environment management plans (CEMPs) shall be developed on basis of EMPs by

the Investor. When the CETP is operated, it is required to prepare and submit the reports on

current status of environmental quality to VEPF and WB, including summary of key environment

management issues, mitigation measures, implemented actions and results as well as compliance

with the Regulations and Standards on Environment.

4.16.2. On basis of the Community’s monitoring

The community shall monitor the projects in their process to secure their CETP to comply with

the regulations on environmental and social affairs to risks issues of environment pollution and

serious health to humans and ecosystems.

Supervisor

01 people

Lab staff

01 people

Operational staffs

03 people

Maintenance staff

01 people

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Making monitoring methods in the spirit of voluntary reporting solving urgent problems

When environmental degradation occurs, local people and authorities will report to the agencies.

4.16.3. Monitoring the Project’s completion of indexes

IZ Infrastructure Development Company is responsible for reporting the following information to

the Department of Natural Resources every six months:

− Health indexes of workers;

− Water quality in the receiving source;

− Quality of ambient water environment;

− Effective operations of the CETP (WW and sludge treatment)

− New impacts and risks to the environment and health.

− Reports on WW discharge to submit to division of water resource management directly

under the Department of Natural Resources & Environment (DONRE).

− To monitor environment quality to send to DONRE

− To report hw management to send to SW Management Division of DONRE.

4.16.4. Environment Quality Monitoring (EQM) Indexes

Environmental Monitoring Program (EMP) is carried out in 2 phases: Construction phase (it is

proposed to extand in 1 year), operations of the CETP are shown in Table 5.5. For other

indicators, the ETP manager must measure other targets on basis of the required list in the EIA

license. The location monitoring maps and GPS information should be included in the EMP

reports.

Table 0-5. Environmental Monitoring Program

I CONSTRUCTION PHASE

1 Monitoring of air quality and noise

Parameters and

frequency

Once for 3 months or at the time of accident: PM10, total

particles, noise (24 hours in average) NOx, SO2, CO



2 Monitoring of groundwater quality

Parameters and

frequency

Once for 6 months; pH, color, hardness, SS, Cl-, NH4+,

Xyanua, NO3-, NO2

-, Sulfate, Fe, Mn, As, E.Coli, Total

Coliform;

Position 01 location in the Project’s site


3 Monitoring of WW quality

Parameters and

frequency

Once for every 3 months; pH, BOD5, COD, SS, Ammonium,

Phosphate, Chloride, surface active agents, oil and grease

Position 1 proposed position at the tents for workers


II OPERATION PHASE (This Program shall be implemented simultaneously with the monitoring program of IZ.

117

Therefore, some repeated parameters and position may be cancelled to avoid repetation)

6. Monitoring of air quality

Parameters and

frequency

Once for 6 months or at the time of acciden: temperature,

dust, noise (24 hours in average), CO, SO2, NO2, NH3, H2S,

CH4, VOC



7. Monitoring of surface water/river quality

Parameters and

frequency

Once for 3 months in the first operation year

Once for 6 months in the following years or at the time of

accident: pH, DO, BOD5, COD, SS, Coliform, turbidity, oil

and grease, N-NH4, N-NO3-, Cl

-, P-PO4

3-, SO4

2-, heavy metals

(As, Pb, Hg, Cd, Ni, Cr (III), Cr (VI), Cu, Mn), and surface

active agents.

If AMS is applied, such indexes as pH, TSS and COD shall

be automatically measured in case of incident or accident.

Position 4. 1 km upstream of discharge point of CETP

5. Discharge point of CETP

6. 1 km downstream of the discharge point of CETP


8.

Monitoring of groundwater quality

Parameters and

frequency

Once for 6 months: pH, TDS, turbidity, hardness, N-NO3, N-

NO2, total Fe, Cl-, N-NH3, SO4

2-, E. Coli, Coliform

Position Groundwater near the CETP


9. Monitoring of WW quality

Parameters and

frequency

AMS: pH, COD, TSS, and flow rate (continually monitoring)

at effluent discharge point.

Once per month in the first operation year of the CETP

Once for 3 months as the system is operated stably:

temperature, pH, BOD, COD, TSS, TDS, color, N-NH4, total

N, total P, alkali, KLN (As, Hg, Pb, Cd, Ni, Cr (III), Cr (VI),

Cu, Mn, Sn), oil and grease, total CN-, total phenol, chloride,

sulfur, fluoride, residual chloride, total pesticide (organic

chloride and phosphorus or organic matters), total PCB and

coliform.

Position 1. Influent of CETP

2. Effluent of CETP


10. Monitoring of sludge quality

Parameters and

frequency

Once per month in the first operation year

Once for 3 months: pH, Pb, As, Cd, Hg, Al, total Fe, Ni, Cu,

Zn, Mn, phenol, PAH, total nitrogen, total phosphate, CN-, và

Coliform.

Daily monitoring the quantity of waste sludge

Position 1. In sludge dryer yards

2. In the sludge treatment area

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Compared to TCVN 7629:2007, QCVN 03: 2008

4.16.5. Automatic monitoring

Automatic monitoring is carried out by the CETP at two levels: (i) to monitor the pretreatment

standards, i.e. the quality of industrial ww in each enterprise before connecting to the CETP (ii)

to monitor operations of the CETP.

The CETP have their own laboratory to monitor the water quality parameters, at least simple

parameters and to monitor suspected pollutants of tenants in the IZ.

a. Monitoring pretreatment standards

CETP staff will examine the pretreatment standards of tenants in the IZ in local treatment

station’s outlet before signing a contract with them for WW treatment. The pretreatment

standards will be determined by the CETP and varied on each case, depending on treatment

capacity, technology and WW treatment unit price. In all of cases, the required tenants must treat

the WW to reach type B, the Regulation QCVN 40: 2011. However, Domestic WW can be

directly connected to the CETP after collecting by septic tanks in their plants.

The CETP staff shall check pretreatment standards regularly to secure no overloading treatment

capacity and to avoid illegal discharging to the WW system. If the tenants fail to comply with

pretreatment standards, punishment measures shall be applied such as administrative sanctions,

temporary suspension of the treatment contracts or water supply applied to the tenants.

As tenants build their WW systems, they must report and be approved by the IZ Management

Unit the discharging points to the general drainage system of the IZ. The construction process

will be supervised by the the CETP and IZ Management Unit staff. Therefore, the CETP staff has

to clearly know the exact location of the connection of each enterprise and easily sample the WW

in any time.

b. Monitoring efficiency of the CETP

The CETP shall have its own laboratory in the region to measure the (minimal) main water

quality parameters such as pH, DO, COD, BOD, TSS, VSS, VFA, SVI, water flow. The CETP’s

laboratory shall use the standard analysis methods and apply QA/QC procedure.

The CETP owns an operating manual supplied and trained by experts on the CETP construction

consultancy. During the operation phase, the staff shall monitor and record all operating

parameters in the Operation Diary and hand over to the next shift. This procedure will help the

CETP staff soon discover any risks and factors impacting the treatment process and timely

implement corrective measures.

Operation records of the CETP include the following times (for each shift). They are compared

with best technical requirements and operational practices:

- Changes of input flow rate (total flow rate, minimal and maximal flow rate);

- The change of the characteristics of flow rates or quality of WW in the treatment tank

(temperature, pH, ORP, BOD, COD, SS (suspended solids), volatile solids VSS, SVI,

DO, color, etc);

- Changes in process operation, which can be generated by: weight changes, the

presence of non- biodegradable components, the decomposed composition ratio

MLSS in Aerotank, change of generated sludge and circulated sludge, change in

sudden temperature and lack of nutrients, etc.

119

- Used chemical dose (i.e. NaOH, H2SO4, NaOCl, polymer, aluminum, nutrients, etc);

- Generated sludge;

- Operational status, the accident of the device, the operating time of the operating

device and spare parts

- Electricity consumption level;

- Schedule of equipment maintenance (such as device codes, working hours, accidents,

causes, solutions, cleaning, oil changes, etc.)

- Results of the AMS, i.e. minimum, maximum, mean value of pH, flow rate, SS, COD;

- Change of effluent concentration (BOD, total nitrogen, total phosphorus, coliforms,

TS and other related parameters);

4.17. EXPECTED EXPENSE AND IMPLEMENTATION TIME OF THE EMP

A summary of the proposed budget for environmental management, mitigation and monitoring

measures which are presented for each activity in the below main EMP:

- Mitigation measures;

- Training environment;

- Environment monitoring expense during the construction and operation of the CETP.

Table 0-6. Expected expense of EMP in the construction phase and first year of operation

Unit of Account: VND

No. Description Expense Capitals

1 Implementation of mitigation measures Included in the

Contract

IDA

2 Environment training for the CETP

operation

30,000,000 Counterpart capital

3 Monitoring the environment quality

during construction period (1 year)


4 Monitoring the environment quality in

the first operation year of the CETP


5 Environment Protection fee 20,000,000

Counterpart capital

6

Installation and annual operation of the

Automatic Monitoring System (AMS) for

CETP

654,886,364 IDA

Total 774,886,364

Estimated typical cost for annual monitoring is about 70,000, 000 vnd.

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CHAPTER 5 PUBLIC CONSULTATION

5.1. OBJECTIVES OF PUBLIC CONSULTATION

5.1.1. For appraisal authorities

To assist the appraisal authorities to have more holistic view on the Project on basis of views of

the local goverments and impacted communitites to help evaluate more effectively.

5.1.2. For the project owner

To receive the feedbacks of local authorities and impacted community to have more practical

additional assessment and to propose appropriate and effective mitigation measures. At the same

time, to bear responsibilities for the full implementation of the mitigation measures to minimize

adverse impacts of the Project

5.1.3. For the Consulting Agencies

To receive the feedback of local authorities and impacted community to have more practical

additional assessment and to propose appropriate and effective mitigation measures.

5.1.4. For the People’s Committee and Committee of Vietnam Fatherland’s Front in

commune level

To assist the leaders of the People’s Committee and Committee of Vietnam Fatherland’s Front in

commune level to have better understanding about the project in the following aspects: The

achieved benefits when implementing the project, the Project’s impacts environment and possible

mitigation measures for the project.

Besides, to create opportunities for local governments to raise issues and concerns for the project

5.1.5. For the impacted communities

To help the impacted communities to have better understanding about the project in the following

aspects: The achieved benefits when implementing the project, the Project’s impacts environment

and possible mitigation measures for the project.

Besides, to create opportunities for the impacted communities to raise issues and concerns for

the project.

5.2. PUBLIC CONSULTATION IMPLEMENTATION

5.2.1. Interviewees

The People’s Committee and Committee of Vietnam Fatherland’s Front of Hoa Mac

Town, Chau Giang Commune and Trac Van Commune.

The surrounding local people who are impacted by the Project.

5.2.2. Implementation methods

The Investor shall send the written summary of the Project to the People’s Committee and

Committee of Vietnam Fatherland’s Front of concerned communes for comments.

The Investor shall direct interview and collect the opinions of impacted people by ready-made

forms.

121

5.3. CONSULTATION RESULTS

5.3.1. Consultation results in Hoa Mac Town, Chau Giang Commune and Trac Van

Commune

Details of the consultation results to the People’s Committee and Committee of Vietnam

Fatherland’s Front of Hoa Mac Town, Chau Giang Commune and Trac Van Commune are

included in the Appendix. Below is summary of some of the main content of the consultation

process.

5.3.1.1. Adverse impacts of the Project on the natural environment, socio-economic aspects

After reviewing the attached summary documents for consultations, the People’s Committee and

Committee of Vietnam Fatherland’s Front of Hoa Mac Town, Chau Giang Commune and Trac

Van Commune agree with the Project’s negative impact assessment on the natural environment

and socio-economic aspects. These are true and practical assessment to the actual situation of the

localities.

5.3.1.2. The Project’s Environment Impact Mitigation Measures

After reviewing the characteristics of the effluent and mitigation measures presented by the

Investor, the People’s Committee and Committee of Vietnam Fatherland’s Front of Hoa Mac

Town, Chau Giang Commune and Trac Van Commune agree with these solutions. They are

mitigation measures suitable to the effluents generated by “1.500 m3 / day CETP Project in Hoa

Mac IZ, Phase I”

5.3.1.3. Recommendations to the Investor

The Investor has to comply with the laws and regulations during the construction and operation

phases;

The Investor has to ensure public order and security during construction and operation phases;

The Investor has to warrant collecting and treating WW to meet standards for entire Hoa Mac IZ.

5.3.2. Interview results

The contents of 24 questionnaires distributed to the households on the project of “Construction

CETP with capacity of 1,500 m3/day at Hoa Mac IZ, Phase I, module 1” show the fact that 21 out

of 24 households agree with the Project and 3 out of 24 families have no idea. Please see the

Appendix for details in these questionnaires.

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Table 5-1. Results of public consultation

No Name Gend

er

Birt

h

year

Address Occupati

on

Water

sources

Is affected by the project

Conclusion Air

Qualit

y

Health Incom

e

Othe

rs

Hoa Mac Town – Duy Tien District – Ha Nam Province

1 Vu Xuan

Truong Male 1971 Hoa Mac town

Protector

Well-

water No No No No Agree

2 Vu Van

Giang Male 1962 Hoa Mac town Protector

Well-


3 Tran Minh

Vuong

Fema

le 1982 Hoa Mac town

Excavato

r

Well-

water

Little

effect No No No Agree

4 Pham Van

Bang Male 1968 Hoa Mac town Farmer

Well-


5

Nguyen

Trung

Thuan

Male 1965 Hoa Mac town Farmer Well-

water No

No

option

No

option No No option

6 Nguyen Huy

Hieu Male 1971 Hoa Mac town Farmer

Well-

water Yes No No No Agree

7 Nguyen Van

Sy Male 1968 Hoa Mac town Farmer

Well-


8 Dang Quang

Tien Male 1976 Hoa Mac town Farmer

Well-


Chau Giang Commune – Duy Tien District – Ha Nam

9 Le Van Sau Male 1976 Van Kenh

village Worker

Well-

water No

Little

effect No No No option

123

No Name Gend

er

Birt

h

year

Address Occupati

on

Water

sources


Conclusion Air

Qualit

y

Health Incom

e

Othe

rs

10 Pham Van

Binh Male 1961

Chuyen Thien

village Worker

Well-


11 Pham Van

Thanh Male 1970

Chuyen Thien

village Farmer

Well-

water

Little

effect No No No Agree

12 Nghiem Thi

Huyen

Fema

le 1982

Van Kenh

village Farmer

Well-


13 Pham Quoc

Doan Male 1962

Van Kenh

village Protector

Well-

water No No

Little

effect No No option

14 Nghiem Thi

Van

Fema

le 1971 Dong village Teacher

Well-


15 Luu Van

Thuy Male 1971

Van Kenh

village Famer

Well-


16 Luu Van

Thuy Male 1969

Van Kenh

village Famer

Well-


Trac Van Commune – Duy Tien District – Ha Nam Province

17 Nguyen Van

Luc Male 1964 Lat Ha village Protector

Well-

water No

Small

effect No No Agree

18 Nguyen Van

Khiet Male 1962 Lat Ha village

Village

chiefs

Well-


124

No Name Gend

er

Birt

h

year

Address Occupati

on

Water

sources


Conclusion Air

Qualit

y

Health Incom

e

Othe

rs

19 Hoang Thi

Quyen

Fema

le 1972 Lat Ha village Famer

Well-


20 Nguyen Thi

Huong

Fema

le 1992 Lat Ha village Pupil

Well-


21 Dang Van

Chinh Male 1968 Lat Ha village Famer

Well-


22 Nguyen Van

Tinh Male 1968 Lat Ha village Famer

Well-


23 Nguyen Van

Diep Male 1972 Lat Ha village Famer

Well-


24 Hoang Van

Luan Male 1956 Lat Ha village Famer

Well-


125

5.4. INFORMATION DISCLOSURE

EIA reports of the project “Construction CETP with capacity of 1,500 m3/day at Hoa Mac IZ,

Phase I, module 1” shall be sent by the Investor to be listed publicly in the headquarters of the

People's Committee of Chau Giang Commune, Trac Van Commune and Hoa Mac town for

public awareness, supervision. In addition, the EMP is publicized in the headquarter of

Vietnam Environment Protection Fund (VEPF), Infoshop in Washington DC and at Vietnam

Development Information Center (VDIC)

5.5. THE INVESTOR’S COMMITMENTS

The Investor warrants meeting Vietnam Environmental Regulations during construction and

operation phases, including:

+ Ambient air environment: The pollutants discharged to the environment must meet

the Vietnamese Regulations on Ambient Air Quality (QCVN 05:2009/BTNMT, QCVN

06:2009/BTNMT)

+ Noise: generated during the operation phase of the project will meet noise

regulations in the public and residential areas (QCVN 26:2010/BTMNT)

+ The treated effluent: must meet the Vietnamese Regulations on Industrial WW,

Column A, Kq = 0.9 ; Kf = 1.0

+ Solid waste: All SW will be collected, classified by hired functional firms under the

regulations.

+ Waste sludge: is dewatered and transported to the disposal area in accordance with

laws

+ HW: is stored in the areas with safe roof and collected, treated by hired functional

firms

+ Hazardous and non-hazardous wastes are collected and transported to the designated

treatment site in accordance with safety and hygiene requirements. To warrant managing solid

waste in line with the Decree No. 59/2007/NĐ-CP on management of sw; the Circular No.

12/2011/TT-BTNMT dated 14th

April 2011 of MONRE on management of HW;

The Investor warrants applying incident prevention and pollution mitigation measures

as presented in the reports and to intensify trainings to the officers to improve their

environmental management capacity and to ensure to operate the CETP safely, effectively and

environmentally friendly.

The Investor warrants that the WW collection system is connected to all land lessees

as the CETP is officially operated.

The Investor warrants that the CETP only has one regular discharging outlet and one

standby discharging outlet.

The Investor shall bear full responsibilities to the Vietnamese laws if violating the

International Conventions, the Vietnam Standards and for any incidents causing

environmental pollution, if any.

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