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NATIONAL POWER TRANSMISSION CORPORATION SOUTHERN POWER PROJECT
MANAGEMENT BOARD
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ENVIRONMENTAL MANAGEMENT PLAN
PROJECT TRANSMISSION EFFICIENCY PROJECT (TEP)
SUBPROJECT: IMPROVEMENT AND UPGRADING OF THE CAI LAY- CAO LANH
220kV
TRANSMISSION LINE
PREPARED BY
Power Engineering Consulting Joint Stock Company 3
Ho Chi Minh City, December 2014
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WB406484Typewritten Text
WB406484Typewritten TextSFG1160
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 1
TABLE OF CONTENT 1. INTRODUCTION
.................................................................................................
3 2. POLICY, REGULATIONS, AND ADMINISTRATIVE FRAMEWORKS ....... 3
2.1 Government Regulations:
......................................................................................
3 2.2. World Bank Safeguard Policies
.............................................................................
5
3. SUBPROJECT DESCRIPTION
...........................................................................
6 3.1. Objectives of the Subproject
..................................................................................
6 3.2. Scope of the subproject
..........................................................................................
7 3.4. Subproject Main Work Volume
..........................................................................
13 3.5. Main Activities Before and During Construction
............................................... 20 3.6 Subproject
implementation schedule and total investment
................................ 22
4. BASIC DATA
......................................................................................................
23
4.1. Geographical location and population
...................................... 23_Toc398554721 4.2.
Topography
..........................................................................................................
24 4.3. Hydro- meteorological characteristics
.................................................................
25 4.4. Situation of land use
.............................................................................................
27 4.5. Basic environmental data
.....................................................................................
27 4.6. Socio-economic status of the subproject area
...................................................... 30
_Toc3985547284.7. Protected areas, natural reserves, sensitive
areas, cultural heritages, historical monuments, temples and
pagodas in the subproject area . 32
5. POTENTIAL IMPACTS
....................................................................................
33 6. MITIGATION MEASURES
...............................................................................
44 7. EMP IMPLEMENTATION ARRANGEMENTS
............................................. 56 8.
MONITORINGPROGRAM
...............................................................................
59 8.1.Objectives
..............................................................................................................
59
9. INSTITUTIONAL DEVELOPMENT ACTIVITIES
........................................ 66 10. COST ESTIMATION FOR
EMP IMPLEMENTATION ................................. 67 11. PUBLIC
CONSULTATION
...............................................................................
67
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 2
ABBREVIATION
APs : Affected persons by the subproject CSC : Construction
Supervision Consultant EMP : Environmental Management Plan EMF :
Environmental Management Frame EIA : Environmental Impact
Assessment EVN : Electricity of Vietnam
DONRE : Department of Natural Resources and Environment AP :
Affected person
GOV : Government Km : Kilometer
MONRE : Ministry of Natural Resources and Environment NPT :
National Power Transmission Corporation
PC : People's Committee PECC3 : Power Engineering Consulting
Joint Stock Company 3
PPC : Provincial People Committee PTC4 : Power Transmission
Company No.4
SIMC : Safeguard Independent Monitor SPPMB : Southern Power
Project Management Board
SS : Substation ROW : Right of way
RP : Resettlement Plan TEP : Transmission Efficiency Project
T/L : Transmission line WB : World Bank
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 3
1. INTRODUCTION The subproject " Improvement and Upgrading of
the Cai Lay - Cao Lanh 220kV
transmission line" belongs to Transmission Efficiency Project
(TEP). The subproject will go through 21 wards/villages/towns (Cai
Lay town, Thanh Hoa commune, Binh Phu commune, Phu An commune - Cai
Lay district - Tien Giang province; An Cu commune, Hau Thanh
commune, Hoa Khanh commune, Thien Tri commune, My Duc Dong commune,
My Duc Tay commune, An Thoi Dong commune, An Thoi Trung commune,
Tan Hung commune - Cai Be district - Tien Giang province; My Hiep
commune, My Long commune, Binh Hang Tay commune, Binh Hang Trung
commune, My Hoi commune, My Tho commune, My Tho town, An Binh
commune - Cao Lanh district - Dong Thap province).
Subproject Main Components Component 1: Construction of a new
transmission line with total length of 56.97 km
including: (1) dismantling and taking back the existing Cai Lay
- Cao Lanh single circuit 220kV transmission line (from Cai Lay
220kV substation to the existing tower T142), (2) building the
double circuit 220kV transmission line on the ROW of the existing
Cai Lay - Cao Lanh single circuit 220kV transmission line with the
length of 50.82km, (3) building the new double circuit 220kV
transmission line on the new ROW with the length of 6.15km.
Construction time for the subproject is estimated about 15 months.
Estimated date of construction commencement is in September
2015.
Component 2: Improving compartments of No.274 and No.275 of the
Cai Lay 220 kV substation and compartments of No.271 and No.272 of
the Cao Lanh 220 kV substation : these works mainly including
installing equipment will be implemented in the existing Cai Lay
and Cao Lanh 220 kV stations.
To ensure the potential negative impacts are identified and
mitigated during the subproject implementation, and in compliance
with the policy on environmental assessment of the World Bank
(OP/BP 4.01), an Environmental Management Plan (EMP) of the
subproject has been prepared in accordance with the guidelines
provided in the Environmental and Social Management Framework
(ESMF) of the TEP project. The EMP includes the following contents:
an introduction, the main legal framework, the subproject
description, the environmental background, potential positive and
negative impacts, proposed mitigation measures, and implementation
arrangements. It also includes an Environmental Codes of Practice
(ECOP) prepared for the subproject. The EMP will be incorporated
into the bidding documents and construction contracts, as well as a
scope for environment quality monitoring. A Resettlement Plan (RP)
has also been prepared for the subproject and is presented
separately in another safeguard document.
According to the Vietnamese Government’s regulations on
environmental impact assessment (EIA), the subproject has
implemented the report on environmental impact assessment for
submission to the Ministry of Natural Resources and Environment
(MONRE) for appraisal and approval. The EIA report was submitted to
MONRE in April, 2014 and is expected to be approved in October,
2014.
2. POLICY, REGULATIONS, AND ADMINISTRATIVE FRAMEWORKS 2.1
Government Regulations:
The following national laws and regulations are applied for the
subproject:
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 4
- Law on Protection of the Environment No.52/2005/QH11 passed by
the National Assembly on November 29, 2005 regulates the
obligations of individuals, organizations in protecting
environment.
- Law on Water Resource No.17/2012/QH13 enacted June 21, 2012. -
Land Law No.45/2013/QH13 dated November 29, 2013 which will take
effect on July
1, 2014.
- Construction Law No.16/2003/QH11 dated November 26, 2003. -
Labor Law No.35-L/CTN dated June 23, 1994 with some amendment
underDocument
No. 84/2007/QH11 by the National Assembly. - The Law on Cultural
Heritage No.32/2009/QH12 promulgated on June 18, 2009 about
amending and supplementing some articles of the Law on Cultural
Heritage No.28/2001/QH10.
- Law on Fire Prevention and Fighting No.27/2001/QH10 dated June
29, 2001. - Law on electricity No.28/2004/QH11 dated December 3,
2004. - Decree of Government No.80/2006/ND-CP dated August 9, 2006
on guidance for
implementation of Law on Protection of the Environment.
- Decree of Government No.29/2011/ND-CP dated April 18, 2006
regulating strategic environmental assessment, environmental impact
assessment and environment protection commitment.
- Decree No.117/2009/ND-CP dated December 31, 2009 on sanction
of violations in the field of environmental protection.
- Decree No.59/2007/ND-CP dated April 9, 2008 on solid waste
management. - Decree No.174/2007/ND-CP dated November 29, 2007 of
GOV on environmental
protection charges for solid wastes.
- Decree No.98/2010/ND-CP of the Government dated September
21,2010 on detailing the implementation of some articles of the Law
on Cultural Heritage and the Law amendingand supplementing some
articles of Law on cultural heritage.
- Decree No.14/2014/ND-CP dated February 26, 2014 detailing the
implementation of the Electricity Law on electrical safety;
- Circular No.26/2011/TT-BTNMT dated July18, 2011 on guidance
for Decree No.29/2011/ND-CP dated April 18, 2011.
- Circular No.12/2011/TT-BTNMT dated April 14, 2011 relating to
toxic waste management.
- Circular No.03/2010/TT-BCT dated January 1, 2010 on some rules
on safe protection of high voltage grids.
- Manual of the Electricity of Vietnam No. 2623/CV-EVN - Science
Technology and Environment, dated 28/05/2007 on the management and
prevention of pollution and exposure to PCBs;
- Guidance of EVN No.2623/CV-EVN - KHCN & MT dated May 28,
2007 on the management and prevention of pollution and exposure to
PCBs;
The main applied National Technical Regulations in the
subproject include:
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 5
- QCVN 05: 2013/BTNMT: National technical regulation on ambient
air quality; - QCVN06: 2009/BTNMT - National Technical Regulation
on hazardous substances in
ambient air; - QCVN08: 2008/BTNMT - National Technical
Regulation on surface water quality; - QCVN09: 2008/BTNMT -
National Technical Regulation on groundwater quality; - QCVN01:
2009/BYT – National technical regulations on drinking water
quality; - QCVN02: 2009/BYT – National technical regulations on
domestic water quality; - QCVN 01:2008/BCT - National Technical
Regulation on electrical safety; - QCVN 03:2008/BTNMT - National
Technical Regulation on permissible limits of
heavy metals in the soilt;
- QCVN 07:2009/BTNMT - National Technical Regulation on
hazardous waste threshold;
- QCVN 40:2011/BTNMT - National Technical Regulation on
industrial waste. Standards, National technical regulations on
power safety technique:
- QCVN QTD 08:2010/BCT – Low voltage power technical regulation;
- TCVN 5308:1999 – Technical safety regulation for construction; -
TCVN 4086:1995 – Power safety Standard for construction; - TCVN
3147:1990 – Safety regulation on loading and unloading works; -
TCVN 2292:1978 – General requirement on safety for painting work; -
TCVN 4244:1986 – Safety technical regulation for lifting equipment;
- TCVN 5863:1995 – Safety requirement during installing and using
lifting equipment.
2.2. World Bank Safeguard Policies An environmental and social
screening of the subproject was undertaken in line with the
OP 4.01 and it showed that the World Bank’s policies on
Environmental Assessment (OP/BP 4.01), and Involuntary Resettlement
(OP/BP 4.12) will be triggered for the subproject. The screening
has also resulted in categorizing the subproject as a Category B
project. 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 a high-voltage substation and
connecting overhead transmission lines, requiring the
identification, mitigation and monitoring of potential adverse
environmental and social
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 6
impacts. As required by OP 4.01 and the government EA
regulation, the subproject has prepared an Environmental Protection
Commitment (EPC) and an EMP that meet the Government’s and the
World Bank’s safeguards requirements. By the TEP appraisal, the
subproject EPC and draft EMP were disclosed locally at the
subproject sites and at the Bank’s InfoShop in Washington DC on
January 24, 2014 as required by OP 4.01 and the Bank’s policy on
access to information.The final subproject final EPC and EMP were
disclosed locally at the subproject sites, at the Bank’s InfoShop,
and the Vietnam Development Information Center on April 18,
2014.
Involuntary Resettlement (OP/BP 4.12) The Involuntary
Resettlement policy seeks to prevent severe long-term hardship,
impoverishment, and environmental damage to the affected peoples
during involuntary resettlement. OP 4.12 applies whether or not
affected persons must move to another location. The Bank describes
all these processes and outcomes as “involuntary resettlement,” or
simply resettlement, even when people are not forced to move.
Resettlement is involuntary when the government has the right to
expropriate land or other assets and when affected people do not
have the option to retain the livelihood situation that they
have.
This policy is triggered because the subproject it would have
impacts involving the temporary and permanent involuntary taking of
land and the loss of structures and assets associated with the land
for the construction of the substation and the associated
connecting line. By appraisal, the subproject has prepared and
disclosed a RP locally at the subproject sites and at the Bank’s
InfoShop in Washington DC on January 24, 2014. The RP includes the
measures to ensure that displaced people are: (i) informed about
the options regarding resettlement; (ii) consulted and offered
alternative resettlement choices; and (iii) provided with effective
compensation and livelihood restoration.
World Bank Group Environmental, Health, and Safety Guidelines
World Bank-financed projects should also take into account the
World Bank Group
Environmental, Health, and SafetyGuidelines1(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.
This subproject should to be conforming the Environmental,
Health, and Safety Guidelines for Electric Power Transmission and
Distribution and General EHS Guidelines. 3. SUBPROJECT DESCRIPTION
3.1. Objectives of the Subproject
- Enhancing connection with the 220kV network for the region,
ensuring the electricity supply is continuous and safe for the load
of the region in any cases.
- In case of necessity high transmission capacity will be
mobilized between the eastern and western regions of South
Vietnam.
1The EHS Guidelines can be consulted at
www.ifc.org/ifcext/enviro.nsf/Content/EnvironmentalGuidelines.
http://www.ifc.org/ifcext/enviro.nsf/Content/EnvironmentalGuidelines
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 7
- Transfering excess capacity from power plants in Nam Song Hau
region (including thermal power plants: Ca Mau, O Mon, Long Phu,
Kien Luong, etc.) to the Eastern of South Vietnam, serving power
supply in a stable condition and long-term for the electrical
network of provinces including Dong Thap, Tien Giang, Long An, Ho
Chi Minh City and the surrounding areas.
- To ensure quality and improve reliability of power supply and
reduce power losses on the transmission grid.
- Preventing overload for the existing Thot Not - Cao Lanh - Cai
Lay 220kV Transmission Line
3.2. Scope of the subproject
- Dismantling and taking back the existing Cai Lay - Cao Lanh
single circuit 220kv transmission line (from Cai Lay 220kv
substation to the existing tower T142);
- Building the double circuit 220kv transmission line on the ROW
of the existing Cai Lay - Cao Lanh single circuit 220kv
transmission line with the length of 50.82km;
- Building the new double circuit 220kv transmission line on the
new ROW with the length of 6.15km;
- Improving compartments of No.274 and No.275 of the Cai Lay 220
kV substation and compartments of No.271 and No.272 of the Cao Lanh
220 kV substation
- The areas used for improving compartments: these positions in
the existing Cai Lay and Cao Lanh 220 kV stations, so the extension
of theses bays will not affect land, trees (permanently or
temporarily) of the local people.
3.3. Location of subproject The subproject will go through 21
wards/villages/towns (Cai Lay town, Thanh Hoa
commune, Binh Phu commune, Phu An commune - Cai Lay district -
Tien Giang province; An Cu commune, Hau Thanh commune, Hoa Khanh
commune, Thien Tri commune, My Duc Dong commune, My Duc Tay
commune, An Thoi Dong commune, An Thoi Trung commune, Tan Hung
commune - Cai Be district - Tien Giang province; My Hiep commune,
My Long commune, Binh Hang Tay commune, Binh Hang Trung commune, My
Hoi commune, My Tho commune, My Tho town, An Binh commune - Cao
Lanh district - Dong Thap province). The subproject will build a
new transmission line with total length of 56.97 km including: (1)
dismantling and taking back the existing Cai Lay - Cao Lanh single
circuit 220kV transmission line (from Cai Lay 220kV substation to
the existing tower T142), (2) building the double circuit 220kV
transmission line on the ROW of the existing Cai Lay - Cao Lanh
single circuit 220kV transmission line with the length of 50.82km,
(3) building the new double circuit 220kV transmission line on the
new ROW with the length of 6.15km.
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 8
Figure 1: Location of the Subproject
Table 3.1 Description of the routes of transmission line
No. Section Length (m) Description
G0-G8: Building the double circuit 220kv transmission line on
the ROW of the existing Cai Lay - Cao Lanh with the length of
50.82km
1 G0-G1 453.71 m
From the first point G0 (the existing B1 tower) towards G1
(tower B3).
This area terrain is flat, there are many fruit trees as
jackfruit, mango, pomelo, longan, coconut. This section is located
in Cai Lay town, Cai Lay District, Tien Giang Province.
The route crosses two medium voltage transmission lines, and Cai
Lay - Cai Be 110kV transmission line, cuts 4 fish ponds, 2 roads
paved by concrete plates and 1 asphalt road.
The route cuts through one house.
There are 4 houses located in the ROW (including the Cai Lay
political training center, 1 piggery).
2 G1 - G1' 1,166.81 m
At G1 (tower B3) the line turns left with an angle of 8º15'31"
and goes straight to G1' (tower No.04).
This area terrain is flat, there are many fruit trees like
jackfruit, banana, pomelo, longan. This section is located in Cai
Lay town, Cai Lay District, Tien Giang Province.
Crossing 6 fish ponds and the Cai Lay river (about 60m
wide).
Crossing 12 roads paved by concrete plates, Provincial Road 868,
a road along the Moi canal under construction.
Crossing two existing medium-voltage T/Ls and 1 low
Cai Lay 220kV substation
Cao Lanh 220kV substation
Subproject
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 9
No. Section Length (m) Description voltage T/L.
Crossing 9 houses and 1 piggery.
There are 41 houses (1 thatched house included) and 1 tomb
located in the ROW.
3 G1' - G2 5,462.77
At G1' (tower No.04) the line turns left with an angle of
3º21'59" toward G2 (tower No.19).
This area terrain is flat, there are many fruit trees as:
jackfruit, banana, pomelo, longan, coconut, mango and a little
crops such as corn and rice. This section is located in Cai Lay
town, Thanh Hoa and Binh Phu communes, Cai Lay District, Tien Giang
Province.
Crossing 1 fish pond, 4 small channels, 1 large channel (about
35m wide) and 28 ditches.
Crossing 10 soil roads, 17 roads paved by concrete plates, 1
asphalt road.
Crossing 4 medium-voltage T/Ls and 3 low voltage T/Ls existing,
a high voltage branch of the existing Cai Lay - Vinh Long 220kV
T/L.
Crossing 1 house, 2 tombs, 2 piggeries.
There are 17 houses (of which 4 thatched houses, 1 concrete
house), 4 piggeries and 1 tomb located in the corridor.
4 G2 - G3 6,515.24 m
At G2 (tower No.19) the line turns left with an angle of
14º43'09 toward G3 (tower No.37).
This area is flat, there are many fruit trees as: jackfruit,
banana, pomelo, longan, coconut, mango and a little crops such as
corn and rice. This segment is located in Phu An commune, Cai Lay
district and An Cu commune, Cai Be District, Tien Giang
Province.
Crossing 25 small ditches, 10 fish ponds, 4 large channels, the
Ba Ton River and the An Cu River (width about 45-60m).
Crossing 4 soil roads, 24 roads paved by concrete plates, 1
asphalt road, Provincial Road 869 and Highway 1A.
Crossing 4 medium-voltage T/Ls and 5 low voltage T/Ls
existing
Crossing 2 houses and 3 thatched house, 4 piggeries, 1 barn and
4 tombs.
There are 40 houses (of which 5 thatched houses and 3
tile-roofed houses), 6 tombs and 4 piggeries located in the
ROW.
5 G3 - G4 6,080.15 m At G3 (tower No.37), the line turns right
with an angle of 18º47'02" toward G4 (tower No.55).
This area is flat. The section will go through paddy field
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 10
No. Section Length (m) Description and fruit trees planting land
of orange, banana, grapefruit, longan, lemon, jackfruit. This
section goes through the communes including An Cu, Hau Thanh, Hoa
Khanh and Thien Tri in Cai Be District, Tien Giang Province.
Crossing 3 fish ponds, 16 small ditches, 12 large channels and
some major rivers such as the Thong Luu River, the Tra Lot River
and the My Thien River (width about 40-80m).
Crossing 30 roads paved by concrete plates, 1 intercommune
concrete road.
Crossing 3 medium-voltage T/Ls and 5 low voltage T/Ls
existing
Crossing 3 houses, 2 piggeries and 5 tombs.
There are 66 houses (of which 2 thatched houses, 1 tile-roofed
house and 1 concrtete house), 5 tombs and 5 piggeries located in
the ROW.
G4 - G5 6,155.74 m
At G4 (tower No.55), the line turns left with an angle of
19º35'30" toward G5 (tower No.72).
This area is flat. The section will go through paddy field and
fruit trees planting land of orange, banana, grapefruit, longan,
lemon, jackfruit, mango, guava. This segment goes through 4
communes including Tri Thien, My Duc Dong, My Duc Tay, An Thoi
Dong, Cai Be District, Tien Giang Province.
Crossing 3 fish ponds, 15 small canals, 10 canals and some large
rivers such as the Ong Ve river, the My Duc Tay River, the Rach
Mieu River and the Co Co river (width about 30-90m).
Crossing 22 roads paved by concrete plates, one 6m wide
intercommune asphalt road.
Crossing 3 medium-voltage T/Ls and 3 low voltage T/Ls
existing
Crossing 5 houses, 1 concrete house and 1 piggery.
There are 35 houses (of which 4 thatched houses), 3 tombs and 4
piggeries located in the ROW.
G5 - G6 8,865.14 m
At G5 (tower No.72), the line turns right with an angle of
29º58'24" toward G6 (tower No.108).
This area is flat. The section will go through paddy field and
fruit trees planting land of orange, banana, grapefruit, longan,
lemon, jackfruit, mango, guava. This section goes through the
communes including An Thoi Dong, An Thoi Trung and Tan Hung in Cai
Be District, Tien Giang Province.
Crossing 38 small ditches, 8 major canals and rivers such as the
Bo Gon River, Ruong canal, Chua Ba canal, Mit canal (width about
40-60m).
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 11
No. Section Length (m) Description
Crossing 7 soil roads, 11 intercommune roads paved by concrete
plates, 1 concrete road, 1 asphalt road.
Crossing 2 medium-voltage T/Ls and 2 low voltage T/Ls existing
and the Nha Be - O Mon 500kV transmission line.
Crossing 2 houses, 1 tomb and 1 piggery. There are 40 houses and
6 tombs located in the ROW.
G6 - G7 3,973.22 m
At G6 (tower No.108), the line turns right with an angle of
29º49'17" toward G7 (tower No.97).
This area is flat. The section will go through paddy field and
fruit trees planting land of orange, banana, grapefruit, longan,
lemon, jackfruit, mango, guava. This segment goes through Tan Hung
commune, Cai Be District, Tien Giang province; My Hiep commune and
My Long commune in Cao Lanh district, Dong Thap province. The
boundary between the two provinces of Dong Thap and Tien Giang is
the Cai Lan canal.
Crossing 6 canals such as Cai Lan, Ba Du, Ba Luong, Nga Cai…
Crossing 2 soil roads, 9 intercommune roads paved by concrete
plates along the Cai Lan canal.
Crossing 1 tomb. There are 19 houses, 2 piggeries and 1 tomb
located in the ROW.
G7 - G8 12,087.37 m
At G7 (tower No.97), the line turns right with an angle of
10º47'47" toward G8 (tower No.142).
This area is flat. The section will go through paddy field and
fruit trees planting land of there are many fruit trees such as
banana, mango, guava. This segment goes through 4 communes
including My Long, Binh Hang Tay, Binh Hang Trung, My Hoi in Cao
Lanh district, Dong Thap province.
Crossing 9 fish ponds, 21 canals such as Tan Truong, Cai beo and
Ong Cung…
Crossing 3 soil roads, 23 intercommune roads paved by concrete
plates and 2 asphalt roads.
Crossing 3 medium-voltage T/Ls and 2 low voltage T/Ls existing
and the My Tho - Cao Lanh 2nd 110kV transmission line.
Crossing 6 houses, 1 piggery and 2 tombs. There are 37 houses
(of which 1 thatched cottage), 3 piggeries and 4 tombs located in
the ROW.
G8-G13: Building the double circuit 220kv transmission line on
the new ROW with the length of 6.15km
G8 - G9 1,120.28 m At G8 (tower No.142), the line turns right
with an angle of 64º02'30" toward G9.
This area is flat, mostly rice fields. This segment is still
in
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 12
No. Section Length (m) Description My Hoi commune, Cao Lanh
district, Dong Thap province.
Crossing 4 irrigation canals with width from 10-42m (including
the Duong Luy channel) and 2 small ditches. The route will also cut
through 2 roads paved by concrete plates along the canals, cross
one single phase medium-voltage T/L, one 110kV transmission line
existing.
There is no house in the route.
G9- G10 1,644.38 m
At G9, the line turns left with an angle of 49º25'10" and
parallels the existing 110kV transmission line with a distance of
25m towards the Cao Lanh substation.
This area is flat, mostly rice fields. This segment goes through
My Tho commune and My Tho town in Cao Lanh district, Dong Thap
province.
Crossing 4 irrigation canals with width from 10-42m (including
the Vam Sang channel), 1 ditch and 1 small pond.
The route will also cut through 5 roads paved by concrete plates
along the canals, cross one single phase medium-voltage T/L, one 3
phase medium-voltage transmission line and one low-voltage
transmission line.
G10 is in a rice field.
Crossing 7 houses. There are 6 houses and 1 small tomb located
in the ROW.
G10 - G11 2,449.81 m
At G10, the line turns left with an angle of 41º57'05" and
parallels the existing 110kV transmission line with a distance of
119m.
This area is flat, mostly rice fields. This segment goes through
My Tho town in Cao Lanh district, Dong Thap province.
Crossing 1 pond, 5 ditches and 8 irrigation canals with width
from 20-40m.
The route will also cut through 2 roads paved by concrete plates
along the canals, 1 asphalt road, cross two 3 phase medium-voltage
transmission lines and one low-voltage transmission line.
G11 is in a rice field.
Crossing 3 houses. There are 15 houses, 1 thatched house, 1
tile-roofed house and 1 small tomb located in the ROW.
G11 - G12 857.42 m
At G11, the line turns left with an angle of 37º03'41" and cross
the existing 110kV transmission line towards the Cao Lanh
substation.
This area is flat, mostly rice fields. This segment goes through
My Tho town and An Binh commune in Cao Lanh district, Dong Thap
province.
Crossing 3 canals, 1 ditch and the Can Lo river (about
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
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Power Engineering Consulting Joint Stock Company 3 13
No. Section Length (m) Description 100m wide)
The route will also cut through 1 asphalt road and 1 stone road,
cross the existing My Thuan - Cao Lanh 110kV transmission line and
the existing Thanh Hung - cao Lanh 110kV T/L.
G12 is in a lotus pond in An Binh commune, Cao Lanh district,
Dong Thap province.
Crossing 2 houses, 1 big charnel house and 1 small tomb. There
are 6 houses, 1 tomb and 1 piggery located in the ROW.
G12 - G13
42.98,m
At G12, the line turns left with an angle of 56º10'24" towards
tower No.15 and stops here.
The area has many deep fish ponds, complex terrain. This segment
is in An Binh commune, Cao Lanh district, Dong Thap province.
There is no house in the ROW.
The line cuts through a lotus pond approximate 0.5-2m.
3.4. Subproject Main Work Volume The below table describes items
and construction volume of the subproject.
Table 3.2 Items and construction volume of the subproject
No. Description Unit Volume
I. NEW CONSTRUCTION
1 Excavation of foundation pits m3 116,578
2 Backfilling foundation pits m3 82,309
3 Concrete grade M100 m3 4961.7
4 Concrete grade M200 m3 18,217.3
5 Sand cushion m3 8,363.4
6 Steel in sizes for foundation Ton 2,644.6
7 Anchor bolt in sizes Ton 80.2 8 Ground connectors Set 159 9
Volume of steel for towers Ton 2,963.6 II ELECTRICAL PART
II.1 Conductors, insulators and auxiliaries
1 Conductor ACSR300/39 km 697.25
2 Connector for conductor unit 581
3 Repair pipe for conductor pipe 174
4 Positioning frame for conductor Set 9,324
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Transmission Efficiency Project Subproject of " Improvement and
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Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 14
No. Description Unit Volume
5 Positioning frame for jumper Set 504 6 Single insulator
support string for conductor Set 216 7 Double insulator support
string for conductor Set 612 8 Double insulator anchor string for
conductor Set 264
9 Insulator support string for jumper of conductor + compensated
damper of 100kg Set
132
II.2 Earth line + auxiliary - Phlox 147
1 Earth line Phlox 147 km 47.56
2 Connector for Earth line Phlox147 Connector 40
3 Repair pipe for Phlox 147 Pipe 12
4 Vibration damper for Phlox 147 Damper 396
5 Support string for earth line Phlox 147 String 112 6 Insulator
anchor string for earth line Phlox 147 String 33
II.3 Earth line + auxiliary TK 70 (GSW7/16”)
1 Earth line TK70 (GSW7/16”) km 10.97
2 Connector for Earth line TK 70 (GSW 7/16”) Connector 9
3 Repair pipe for TK 70 (GSW7/16”) Pipe 3
4 Vibration damper for TK70 (GSW7/16”) Damper 130
5 Support string for earth line TK70 (GSW7/16”) String 26 6
Insulator anchor string for earth line TK 70 (GSW7/16”) String
15
II.4 Fiber cable + auxiliary
1 Fiber cable OPGW150 m 48,785
2 Vibration damper for fiber cable OPGW 150 Damper 396
4 Connector for fiber cable OPGW 150+ bearing frame Box 11
5 Clamp for fiber cable OPGW 150 on the tower Clamp 222
6 Positioning clamp for Fiber cable OPGW 150 on the tower Clamp
44
7 Support string for fiber cable OPGW 150 with armour rod String
112 8 String for anchoring fiber cable OPGW 150 String 31
II.5 Fiber cable + auxiliary
1 Fiber cable OPGW70 m 11,270
2 Vibration damper for fiber cable OPGW 70 damper 130
4 Connector for fiber cable OPGW 70+ bearing frame Box 4
5 Clamp for fiber cable OPGW 70 on the tower Clamp 62
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Transmission Efficiency Project Subproject of " Improvement and
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Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 15
No. Description Unit Volume
6 Positioning clamp for Fiber cable OPGW 70 on the tower Clamp
16 7 Support string for fiber cable OPGW 70 with armour rod String
26
8 Anchor string for fiber cable OPGW 70 String 13
III OTHER MATERIALS
1 Ground connector Position 159
2 River passing sign Position 89 3 Road crossing sign Position
13 4 Number of tower's board Board 159
5 Warning sign Set 159 6 Switchboard Set 159
Table 3.3. Volume of new equipment and structures installed -
220kV Bay of the Cai Lay 220kV substation
No. Items Specification, use purpose Unit Quantity
I INSULATOR STRING AND AUXILIARIES 1.3.1 1.3.2
1 Single insulator anchor string for phase separation 2xACSR300
The whole set and auxiliaries for anchoring wire 2xACSR300
String 12
2 Single insulator support string for phase separation 2xACSR300
The whole set and auxiliaries for supporting wire 2xACSR300
String 12
3 Positioning frame for phase separation 2xACSR300 Size of
positioning frame 200mm Set 90
II 220kV EQUIPMENT 1.3.3 1.3.4
1 Circuit breaker 220kV Outdoor type, 245kV, 1600A, 40kA/3s,
clamp suitable for wire ACSR 710
Set 3
2 Disconnector, 3 phases, one-sided earth connector
Outdoor type, 3 phases, 245kV, 1600A, 40kA/3s, clamp suitable
for wire ACSR 710
Set 4
3 Disconnector, 3 phases, duplex earth connector
Outdoor type, 3 phases, 245kV, 1600A, 40kA/3s, clamp suitable
for wire ACSR 710 and ACSR 300
Set 2
4 Disconnector, 1 phase, without earth connecting blade
Outdoor type, 245kV, 1600A, 40kA/3s, clamp suitable for wire
ACSR 710
Set 6
5 Current transformer
Outdoor type, 1 phase, 245kV, 40kA/3s Ratio: 400-800-1200/1 -1
-1 -1 -1A Accuracy: 0.5-5P20-5P20-5P20-5P20
Set 6
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Transmission Efficiency Project Subproject of " Improvement and
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Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 16
No. Items Specification, use purpose Unit Quantity Load:
30VA-30VA-30VA-30VA-30VA clamp suitable for wire ACSR 710
6 Capacitive voltage transformer Outdoor type, 1 phase, 245kV Tỷ
số: 220kV/ √3 : 110V/√3 : 10V/√3 clamp suitable for wireACSRl
710
Set 2 2
7 Lightning arrester and lightning counter Outdoor type, 1
phase, 196 kV-20kA. Class3
Set 6
8 Post insulator - 220kV - clamp suitable for wire ACSR 710
Outdoor type, 245kV, 10kN, 25mm/kV clamp suitable for wire ACSR
710
Set 20 20
9 Conductor and auxiliaries of 220UV
- Aluminium conductor steel-reinforced ACSR 710 m 900
- 'T' branch clamp (duplex) For wire size 2xACSR 400 to ACSR 710
Clamp 18
- 'T' branch clamp (duplex) For wire size 2x ACSR 300 - ACSR 710
Clamp 12
- Parallel branch clamp For wire size ACSR 710 - ACSR 710 Clamp
4
Table 3.4 Volume of new equipment and structures installed -
220kV Bay of the Cao Lanh 220kV substation
No. Items Specification, use purpose Unit Quantity
I INSULATOR STRING AND AUXILIARIES
l - Single insulator support string for phase separation
2xACSR300
The whole set and auxiliaries for supporting wire 2xACSR300
String 6
2 - Positioning frame for phase separation 2xACSR300
Size of positioning frame 200mm Set 24
II 220kV EQUIPMENT Set l Circuit breaker 220kV, every set
includes: -Outdoor type, 245kV,3150A, 40kA/3s
Set 2
Clamp of equipment bases For wire size ACSR710 Set 12 2
Disconnector, 3 phases, one-sided
earth connector on the right - Outdoor type, 3 phases, 245RV,
1250A, 3 1,5kV/ 1s
Set 12
- Clamp of equipment bases For wire size ACSR300 Set 6 - Clamp
of equipment bases For wire size ACSR710 Set 6
3 Disconnector, 3 phases, without earth connecting blade
Outdoor type, 3 phases, 245RV, 1250A, 3 1.5kV/ 1s
Set 1
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Transmission Efficiency Project Subproject of " Improvement and
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Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 17
No. Items Specification, use purpose Unit Quantity
4 Disconnector, 1 phase, without earth connecting blade
Outdoor type, 1 phase, 245kV, 1250A, 3 l,5kV/ls
Set 6
- Clamp of equipment bases For wire size ACSR710 Set 12 - Đầu
cosse cho dây nối đất
Earth line terminal 150mm2
cái 9
5
Current transformer
Outdoor type, 1 phase, 245kV; 31,5kA/3s Ratio: 400-800-1200/1 -1
-1 -1 -1A Accuracy: 0.5-5P20-5P20-5P20-5P20 Load:
30VA-30VA-30VA-30VA-30VA
Set 6
- Bearing Frame Galvanized form steel Set 6 - Clamp of equipment
bases For wire size ACSR710 Set 12
6 Capacitive voltage transformer
Outdoor type, l phase, 245kV Ratio: 220kV/√3:110V/√
3:110V/√3
Set 6
- Clamp of equipment bases For wire size ACSR710 Set 6 7
Post insulator 220kV Outdoor type, 245kV, 10kN, 25mm/kV For wire
size ACSR710
Set 14
8 Conductor and auxiliaries of 220kV
- Aluminium conductor steel-reinforced Type ACSR 710 m 500
- 'T' branch clamp (duplex) For wire size 2xACSR 710 to ACSR 710
Clamp !2
- 'T' branch clamp (duplex) For wire size 2x ACSR 300 - ACSR 710
Clamp 6
- Mobile ground connecting clamp For wire size ACSR710 Clamp
12
Table 3.5. Volume of materials which will be dismantled and
taken back from the existing single circuit T/L (from the existing
towers B1 to No.142 )
No. Description Signal Unit Quantity Note
I CONSTRUCTION PART
I.1 Post part post 144
1 Vertical support post D220-6T+5 D220-6T+5 post 1 11.952 tons/
post
2 Vertical support post D220-5 D220-5 post 113 6.435
tons/post
3 Vertical support post D220-5+5 D220-5+5 post 3 7.964
tons/post
4 Vertical support post D220-5T D220-5T post 15 6.686
tons/post
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Transmission Efficiency Project Subproject of " Improvement and
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Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 18
No. Description Signal Unit Quantity Note
5 Vertical support post D220-5T+5 D220-5T+5 post 1 8.221
tons/post
6 Transposition post DP220-5 DP220-5 post 1 6.435 tons/post
7 Anchor post N220-1 N220-1 post 1 9.919 tons/post
8 Anchor post N220-1+5 N220-1+5 post 4 12.879 tons/post
9 Anchor post N220-2T+9 N220-2T+9 post 2 24.760 tons/post
10 Anchor post N220-3T+14 N220-3T+14 post 1 19.195 tons/post
11 Anchor post N220-3T+5 N220-3T+5 post 2 12.971 tons/post
I.2 Foundation part
1 Destroying the old foundation throats Position 130
4m3/foundation
2 Destroying the old reinforced concrete foundations
Foundation 14
2.1 - Foundation of tower D220-6T+5 Foundation 1
74.45m3/foundation
2.2 - Foundation of tower D220-5 Foundation 3
50.24m3/foundation
2.3 - Foundation of tower N220-1+5 Foundation 4
95.18m3/foundation
2.4 - Foundation of tower N220-1 Foundation 1
96.04m3/foundation
2.5 - Foundation of tower N220-2T+9 Foundation 2
156.42m3/foundation
2.6 - Foundation of tower N220-3T+14 Foundation 1
124.66m3/foundation
2.7 - Foundation of tower N220-3T+5 Foundation 2
97.18m3/foundation
II ELECTRICAL PART
II.1 Conductor
1 Conductor ACSR 795MCM km 156,74
2 Single insulator support string for conductor ACSR 795MCM
D15-70 Set 405
15 porcelain insulators/string
3 Single insulator anchor string for conductor ACSR 795MCM
N13-160 Set 87 13 porcelain insulators/string
4 Insulator support string for jumper of conductor ACSR 795MCM
DLD15-70
Set 30
5 Vibration damper for conductor Set 867
II.2 Earth line
1 Earth line TK70 (GSW 7/16") km 51,4
2 Support string for earth line DCS-70 Set 152
3 Anchor string for earth line NCS-90 Set 29
4 Vibration damper for earth line Set 323
II.3 Fiber cable
1 Fiber cable OPGW100 m 521
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 19
No. Description Signal Unit Quantity Note
2 Support string for fiber cable OPGW100 DCQ-100 Set 1
3 Anchor string for fiber cable OPGW100 NCQ-100 Set 3
4 Vibration damper for fiber cable OPGW100
Set 3
Table 3.6: Volume of materials which will be dismantled and
taken back from the 220kV bay of Cai Lay 220kV substation
No. Items Specification, use purpose Unit Quantity
I CONDUCTORS, INSULATOR STRINGS AND AUXILIARIES
l Conductor ACSR 41Dmm2 m 1000
2 Single insulator anchor string for conductor ACSR410
String 12
3 Single insulator support string for conductor ACSR 410
String 12
II EQUIPMENT 220kV
l Circuit breaker 220kV Outdoor type, 245kV, 1250A, 31,5kA/3s
Set 2 2 Disconnector, 3 phases, one-
sided earth connector Outdoor type, 3 pha, 245kV, 1250A, 3
l,5kA/3s
Set 4
3 Disconnector, 3 phases, duplex earth connector
Outdoor type, 3 phases, 245kV, 1250A, 3 l,5kA/3s
Set 2
4 Disconnector, 1 phase without earth connecting blade
Outdoor type, 1 phase, 245kV, 1250A. Set 6
5 Current transformer Outdoor type. 1 phase, 245kV; 31.5kA/3s
Ratio: 400-800/1-1-1-1-1A
Set 6
6 Lightning arrester and lightning counter
Outdoor type, 1 phase, 196kV-10kA Set 2
Table 3.7. Volume of materials which will be dismantled and
taken back from the 220kV bay of Cao Lanh 220kV substation
No. Items Specification, use purpose Unit Quantity
I CONDUCTORS, INSULATOR STRINGS AND AUXILIARIES
l Conductor ACSR ACSR 410mm2 m 500
2 Single insulator support string for conductor ACSR 410
String 6
II 220kV EQUIPMENT
l Circuit breaker 220kV Set 12
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 20
No. Items Specification, use purpose Unit Quantity
- Clamp of equipment bases
2 Disconnector, 3 phases, one-sided earth connector on the right
- Clamp of equipment bases
Set 12
3 Disconnector, 3 phases without earth connecting blade - Clamp
of equipment bases
Set 12
4 Disconnector, 1 phase without earth connecting blade - Clamp
of equipment bases
Set 12
5 Current transformer - Outdoor type, 1 phase, 245kV, 3 l,5kA/3s
- Ratio: 400-800/1-1-1-1-1A
Set 6
6 - Capacitive voltage transformer - Clamp of equipment
bases
Set 6
7 Post insulator 220kV - Clamp of equipment bases
Set 14
3.5. Main Activities Before and During Construction 3.5.1. Main
Activities Before and During Construction
The following activities will be implemented before the
construction phase: - Compensation and land clearance; -
Preparation for materials storages and construction sites. The
activities to be implemented during the construction include: -
Excavation; - Transportation of construction materials and
equipment; - Preparation of mortar, concrete formworks and steel
rods; - Installation of steel towers; - Installation of electrical
equipments and stringing of the wires; - Experiments and completion
work.
3.5.2. Transportation Material and equipment supply:
- Sand, stone, gravel, cement, steel, construction materials
will be bought at the local area.
- Steel structures: will be processed in HCM city. - The main
electrical equipment: will be taken at the warehouse of Project
Management
Board in Thu Duc District, HCMC.
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Transmission Efficiency Project Subproject of " Improvement and
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Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 21
Table 3.8. Supply source of materials and equipment
No. Items Unit Source Quantity Transport distance Note
1 Steel for foundation Ton Local area 2,610.7 15 km Domestically
processed
2 Galvanized steel Ton -nt- 3,019.5 15 km "
3 Anchor bolt Ton Warehouse of PMB 81.9 120 km Imported
4 Earth connector Set " 161 120 km " 5 Conductor Ton " 790.3 120
km " 6 Lightning conductor Ton " 31.8 120 km " 7 Fibre optical
cable Ton " 47 120 km "
8 Insulator string and auxiliaries for conductor String " 1,254
120 km "
9 Insulator string and auxiliaries for lightning conductor
String "
188 120 km "
10 Insulator string and auxiliaries for fibre optical cable
String "
186 120 km "
11 Positioning frame Set " 9,852 120 km " 12 Vibration damper
Set " 5,528 120 km "
Long distance transport - Transportation of materials from the
source to the site and along intermediate routes
will be done by truck on highways and provincial roads, by
barges on the large canal. Loading or unloading materials is done
by manual labour or steam-crane of 10 tons;
- Steel poles, conductor, lightning conductor, insulators and
accessories are transported to temporary facilities along the
route;
- Local materials are transported directly from the supplier to
the construction site. For the positions where trucks cannot move
to the construction site, materials will be transported to the
location gathering material along the way;
- The source of materials and equipment from SPPMB stored in the
warehouse of the SPPMB and transported to the station with 30km
distances.
Intermediate transportation Transport works of materials and
equipment from the warehouse to the secondary
locations of gathering materials along the provincial roads and
intercommune roads by trucks. The average internal transport
distance for construction sections is 15 km. Those
materials include cement, steel, wire, ceramics, accessories,
formworks, steel, etc. Transport road for these sections is type
4.
Short distance transport
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 22
Transportation of materials from secondary locations of
gathering materials on roads to the towers' positions by manual
labour or manual labour combined with machines.
Manual handling
All materials and equipment will be transported to the
construction site manually. The distance will be determined
according to every specific case.
3.5.3. Employment
Temporary construction area placed near to the residential and
traffic areas is convenient for transporting and living of the
workwers. Number of temporary construction sites will
be dependent on the contractor to ensure for the shortest
implementation schedule.
Directly working 290 persons Indirectly working 35 Persons
Construction Management Board 25 persons
3.6 Subproject implementation schedule and total investment
3.6.1 Subproject implementation schedule
Based on the requirements of power supply and capacity of the
subproject owner, the subproject implementation schedule is as
follows:
No. Content Period 1 Establishing the feasibility study project
Quarter 2nd, 2013 2 Approving the feasibility study project Quarter
4th, 2013
3 Establishing and Approving the Engineering design and Total
investment estimation.
Quarter 1st - quarter 2nd, 2014
4 Establishing and approving the bidding documents Quarter 3rd,
2014 5 Bidding invitation and bidding evaluation Quarter 4th,
2014
6 Measuring land boundary and compensation for clearance of
space
Quarter 1st - Quarter 3rd, 2015
7 Building and putting the subproject into service Quarter 4th,
2015 - Quarter 1st, 2017
- Implementation planning details of each item are shown in the
following table Table 3.9 Implementation Schedule of the
subproject
No. Content Month 1-2 Month
3-4 Month
5-6 Month
7-8 Month 9-10
Month 11-12
Month 13-15
1 Preparation of the construction site : 1 month
2
Building foundations, erecting towers, finishing to stretch
cable from G5 to G12: 2 months
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 23
3 Building foundations at the positions outside the center line
: 7 months
4
Building foundations at the positions on the center line and
erecting towers: 5 months)
5
Installing insulation string, stretching cable and lightning
conductor (from the Cai Lay 220kV substation to G8): 6 months
6
Dismantling and taking back conductor, insulators, accessories
and posts of the single circuit transmission line section
7 Building bay part (replacing equipment and conductor, etc.): 4
months
8 Acceptance and handover
3.6.2. Total Investment Total investment is indicated in the
table below:
Table 3.10 Total capital of the subproject
No. Item Total
1 Civil construction cost 504,519,665,000
2 Equipment cost 9,959,206,000
3 Compensation cost 67,402,690,000
4 Project management cost 6,897,618,000
5 Consultancy cost 25,495,179,000
6 Other cost 62,571,569,000
7 Contingency 181,171,593,000
Total project cost 858,017,520,000
4. BASIC DATA 4.1. Geographical location and population The
subproject has a length of 56.97km including the first part which
will be built on Cai Lay district is 9,698m long, and the second
with 26,333m length in Cai Be district and the
third with 20,939m length is in Cao Lanh district.
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Transmission Efficiency Project Subproject of " Improvement and
Upgrading of the Cai Lay - Cao Lanh 220kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 24
Geographical location and population of the two provinces are as
follows: Tien Giang Province
Tien Giang is a coastal province of the Mekong Delta in Southern
Vietnam, with a large area belonging to My Tho province earlier.
However, the entire area of Tien Giang
province today belonged to My Tho province including Go Cong
town in the past. Tien Giang province is in the Mekong River delta
and also is the major economic region of
Southern Vietnam, 70 km from Ho Chi Minh City to the south and
90 km from Can Tho city to the north.
Tien Giang province is located in 10°26' N - 106°20' E. It
borders Long An province in the north, Dong Thap province in the
west, Ben Tre and Vinh Long in the south, Ho Chi Minh City in the
north east, the East Sea in the southeast. Tien Giang province has
been
planned by the Government as one of the 8 key economic provinces
in the southern. Tien Giang province comprises 11 administrative
units including 1 city (My Tho), 2
towns (Go Cong, Cai Lay) and 8 districts (Cai Be, Go Cong Dong,
Go Cong Tay, Cho Gao, Chau Thanh, Tan Phuoc, Cai Lay, Tan Phu
Dong).
Dong Thap Province
Dong Thap province is one of 13 provinces in the the Mekong
Delta, it has two large rivers flowing through the province
including the Tien river with 114 km length and the Hau river with
30km length. Regarding geographical boundaries, Dong Thap province
borders Cambodia with the length of 48.7km in the north, Vinh Long
and Can Tho in the south, An Giang Province in the west, Long An
and Tien Giang in the east.
Total natural area of Dong Thap is 3,374.08 km2, equipvalent to
8.17% of the Mekong Delta area and 0.99% of the country area.
Maximum length from north to south is 96km and the largest width
from east to west is 84km.
The population of Dong Thap Province was 1.673 million in 2011,
equivalent to 1.95% of the country's population and 9.5% of the
Mekong Delta's population.
Dong Thap province is divided into twelve administrative units
including: 1 city (Cao Lanh), 2 towns (Sa Dec and Hong Ngu) and 9
districts comprising: Tan Hong, Hong Ngu, Tam Nong, Thanh Binh,
Thap Muoi, Cao Lanh, Lap Vo, Lai Vung Chau Thanh. The whole
province has 119 communes, 9 towns and 17 wards.
4.2. Topography Tien Giang Province
The topography of Tien Giang Province is flat, with slope lower
than 1% and elevation varies from 0 meters to 1.6 meters above sea
level, the common elevation is from 0.8m to 1.1m. In general, the
whole area's slope direction is not clear, however there are
sub-areas with low-lying terrain or hills higher than the general
terrain, besides there are many dunes in bow shape with the popular
elevation from 0.9 to 1.1m standing out above the surrounding
plains.
Land of the province is largely neutral alluvial soil, less
acidic along the Tien River accounting for about 53% of the
provincial area. Tien Giang province has convenient source
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Transmission Efficiency Project Subproject of " Improvement and
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Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 25
of fresh water which has been put to use for a long time, the
paddy fields with high productivity and intensive orchards have
been formed in the province; the remaining land area comprises:
19.4% is aluminum soil and 14.6% is saline alluvial soil .
Dong Thap Province
The terrain of Dong Thap Province is relatively flat with common
elevation from 1 to 2m above sea level. The topography is divided
into two major regions: one in the north of the Tien River and the
other in the south of the Tien River.
Dong Thap Province benefits from a large river (the Tien River),
channel and spring system, frequently silt-aggraded soil, and
permanently fresh and non-saline water source.
4.3. Hydro- meteorological characteristics Tien Giang and Dong
Thap provinces are located in the tropical climate zone. In a
year,
there are two distinct seasons: rainy season from May to
November, dry season from December to April of the following
year.
Due to the provinces' topography lying in the Mekong Delta and
being crossed by the Tien river and Hau River so they are greatly
affected by these two rivers. The hydrologic regime is divided into
2 seasons: exhausted season from December to June of the following
year and flood season from July to November.
Table 4.1. Climatic conditions in the subproject area
Meteorological factors
My Tho meteorological
station (Tien Giang)
Cao Lanh meteorological
station (Dong Thap)
Air temperature (oC) + Average temperature + Highest temperature
+ Lowest temperature
27.0 38.9 14.9
27.1 37.4 15.8
Air humidity (%) + Average relative humidity + Minimum average
relative humidity
81.8 64.4
82.8 64.9
Rainfall (mm) + Average annual rainfall + Highest daily rainfall
+ Total number of rainy days per year
1384 301
134.2
1398 184
128.8 Total number of sunshine hours per year 2645 2688 Total
number of foggy days per year 0.4 2.8
Average annual cloud cover (tenth of the sky cover) 6.0
7.2
Total number of thunder days per year 91.7 87.0 Density of
lightning in the project area (times/km2/year)
13.7
13.7
Air temperature: Air temperature does not vary much between
months in a year. Table 4.2. Average annual air temperature
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Power Engineering Consulting Joint Stock Company 3 26
Province/City Min Max Mean
Tien Giang 25.10C (January) 28.1oC (April) 26.3oC
Dong Thap 25.4oC (January) 28.6oC (April) 27.1oC
Air humidity: In the rainy months humidity is high and in the
dry season humidity is reduced but the humidity difference between
months is not significant.
Table 4.3. Average annual humidity
Province/City Min Max Mean
Tien Giang 77.3%(March) 87.3% (September)
83%
Dong Thap 77.7% (March) 86.5% (July) 82.8%
Rainfall: rainfall in the rainy season accounts for about 75%
total annual rainfall. Rainfall is distributed evenly in this
region.
Table 4.4. Average Annual rainfall
Province/City Total number of rainny days Average Annual
rainfall
Tien Giang 152 days 1,663mm
Dong Thap 129 days 1,398mm
Solar radiation: solar radiation is measured based on the number
of sunny hours. Table 4.5. Total number of sunny hours per year
Province/City Min Max Mean
Tien Giang 162 hours (September)
289 hours (March) 2532 hours
Dong Thap 179 hours (September)
282 hours (March) 2688 hours
Wind: Table 4.6. Wind velocity
Province/City Max Average Wind pressure
Tien Giang 31 m/s 1.6 m/s. Wo=65 daN/m2
Dong Thap 31 m/s 1.6 m/s Wo=65 daN/m2
Storm: This region has not directly influenced by storms
Thunder: Table 4.7. Total of number of thunder days
Province/City Average number of thunder Density of lightning
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days
Tien Giang 64.1 days 12.1 times/km2/year
Dong Thap 87 days 14.7 times/km2/year
4.4. Situation of land use
Tien Giang Province : Total natural land area of Tien Giang is
2,366.63 km². The structure of land use in Tien
Giang province is as follows: agricultural land: 1815.05 km2
(accounting for 76.69%), forest land: 82.65 km2 (accounting for
3.49%), specialized land: 15,887 km2 (accounting for 6.71%),
residential land: 76.46 km2 (accounting for 3.23%) and unused land:
23.36 km2, rivers, streams, rock mountain (accounting for
9.87%).
Dong Thap province: Total natural land area of Dong Thap is
3,238.05 km². Structure of land use in Dong
Thap province is as follows: agricultural land: 2,493.77 km2
(accounting for 77.01%); forest land: 143.15 km2 (accounting for
4.42%); specialized land: 214.39 km2 (accounting for 6.62%);
residential land: 155.99 km2 (accounting for 4.82%) and unused
land: 230.75 km2; rivers, streams, rock mountain (accounting for
7.13%).
4.5. Basic environmental data Quality of air and noise To assess
the quality of the environment in the project area, Power
Engineering
Consultant Joint Stock Company 3 cooperated with Sac Ky Hai Dang
Science - Technology Services Joint Stock Company to conduct
measurement and analysis of environmental parameters of water and
air at 05 locations along the line of the subproject on May 21st,
2014. The selected measurement locations are the locations where
the air quality is easily affected due to construction of
subproject and near residential areas. The measured parameters
comprise noise, dust, SO2, NO2, CO.
Table 4.1 Sampling locations of air and noise
No. Symbol Sampling
date (dd/mm/yyyy)
Description of sampling locations Coordinate (X, Y)
01 K1 21/5/2014 Provincial road 868, Cai Lay town, Cai Lay
county town Tien Giang province
1,150,952.,57 540,036.,66
02 K2 21/5/2014
Tra Lot Bridge – National Highway 1A, Hoa Khanh commune, Cai Be
District, Tien Giang Province
1,146,270.,20 529,260.,72
03 K3 21/5/2014 Co Co Bridge, An Thai Dong commune, Cai Be
District, Tien Giang Province
1,142,456.,63 517,645.,00
04 K4 21/5/2014
Cai Say Bridge - National Highway 30, Binh Hang Tay commune, Cao
Lanh district, Dong Thap province
1,144,336.,30 504,925.,87
05 K5 21/5/2014 Can Lo Bridge - National 1,155,189.,87
492,427.,62
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No. Symbol Sampling
date (dd/mm/yyyy)
Description of sampling locations Coordinate (X, Y)
Highway 30, An Binh commune, Cao Lanh district, Dong Thap
province
Table 4.2 The results of analysis of ambient air quality in the
project area
Position Dust
(mg/m3) SO2
(mg/m3) NO2
(mg/m3) CO
(mg/m3) Noise (dBA)
K1 0.18 0.04 0.015 2.2 55-60
K2 0.26 0.05 0.044 3.12 65-67
K3 0.16 0.022 0.036 1.37 51-54
K4 0.21 0.23 0.033 1.56 56-59
K5 0.22 0.02 0.031 1.18 55-60
Test method TCVN 5067-1995 TCVN
5971-1995 TCVN
6137-1996 52 TCN 352-89 Acoumeter
QCVN 05:2013/BTNMT 0.3 0.35 0.2
30 -
QCVN 26:2010/BTNMT - - - - 70
Note:
- QCVN 05:2013/BTNMT - National technical regulation on ambient
air quality;
- QCVN 26:2010/BTNMT: National technical regulation on
noise.
Remark: From the analysis results of 05 points measured in the
project area (along the transmission
line), noise levels at the measurement points reached QCVN 26:
2010/BTNMT; air quality (SO2, NO2, CO and dust) at the measurement
points reached QCVN 05: 2013/BTNMT. The above result showed that
the quality of air and noise in the region is still good.
Surface water quality To assess the quality of the surface water
in the project area, Power Engineering
Consultant Joint Stock Company 3 cooperated with Sac Ky Hai Dang
Science - Technology Services Joint Stock Company to conduct
measurement and analysis of environmental parameters of water
samples at 05 locations along the line of the subproject on May
21st, 2014. The selected measurement locations are the locations
where the surface water quality is easily affected due to
construction of subproject. The measured parameters comprise pH,
TSS, BOD5, COD, nitrate (NO3-) (based on N), phosphate (PO43-)
(based on P) and total coliform..
Table 4.3: Sampling positions of surface water
No. Symbol Sampling
date (dd/mm/yyyy)
Description of sampling locations Coordinate (X, Y)
1 N1 21/5/2014 Cai Lay river, Cai Lay town, Cai Lay county town
Tien Giang 1,150,207.13 538,160.22
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No. Symbol Sampling
date (dd/mm/yyyy)
Description of sampling locations Coordinate (X, Y)
province
2 N2 21/5/2014 Hoa Khanh river - Tra Lot Bridge, Hoa Khanh
commune, Cai Be District, Tien Giang Province
1,147,131.13 528,204.52
3 N3 21/5/2014 Co Co river, An Thai Dong commune, Cai Be
District, Tien Giang Province
1,142,456.63 517,645.00
4 N4 21/5/2014 Cai Say Canal - Binh Hang Tay commune, Cao Lanh
district, Dong Thap province
1,146,336.27 504,855.57
5 N5 21/5/2014 Can Lo river - National Highway 30, An Binh
commune, Cao Lanh district, Dong Thap province
1,154,802.09 497,826.26
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Table 4.4 The results of analysis of surface water quality in
the project area
No. Parameter Test method Unit
Result QCVN 08:2008/ BTNMT
Column B1 N1 N2 N3 N4 N5
1 pH TCVN 6492:2011 - 6.54 6.62 6.61 6.58 6.71 5.5 - 9
2 BOD5 (20oC) SMEWW
5210 B:2005 mg/l 17 18 22 17 20 15
3 Total suspended solid (TSS) SMEWW
2540 D:2005 mg/l 38 47 81 72 35 50
4 Nitrat (NO3-)
(based on N) SMEWW
4500 :2005 mg/l 2.9 2.6 3.2 4.7 2.1 10
5 Phosphat (PO43-)
(based on P) SMEWW
4500 :2005 mg/l 0.28 0.37 0.44 0.29 0.46 0.3
6 Total Coliform TCVN 6189-2: 1996
MPN/ 100 ml
1,700 989 1,300 1,400 2,100 7,500
Note:
- QCVN 08:2008/BTNMT: National technical regulation on surface
water quality; column B1: used for irrigation purposes or other
uses which require similar water quality or other purposes used as
type B2.
Remark: Comparison of analytical results of surface water
quality with QCVN 08: 2008/BTNMT column B1 showed that most of the
parameters reached the allowable standards of the regulation,
except parameters including phosphates (PO43-) (at 3 locations) and
BOD5 (at 5 locations) which are higher than the standards. Thus,
the quality of the surface water in the project area is slightly
polluted.
4.6. Socio-economic status of the subproject area 4.6.1.
Economy
- Tien Giang province Tien Giang province is in the Mekong River
delta and also is in the major economic
region of Southern Vietnam, 70 km from Ho Chi Minh City to the
south and 90 km from Can Tho city to the north. On the
administrative boundaries, it borders Long An province in the
north, the East Sea in the east, Dong Thap province in the west and
Ben Tre in the
south. Total natural area of Tien Giang Province is 2,481.77
km2, equipvalent to 6% of the
Mekong Delta area, 8.1% of the major economic region area in
South Vietnam and 0.7% of the country area.
The population of Tien Giang province is 1,682,600 persons
equivalent to 1.39% of the country's population and 6.97% of the
Mekong Delta's population.
About administrative regions, Tien Giang Province has 01 city
(My Tho city); 01 town (Go Cong town) and 08 districts including:
Cai Be, Cai Lay, Chau Thanh, Cho Gao, Go
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Cong Dong and Go Cong Tay and Tan Phu Dong, Tan Phuoc. Rate of
Economic growth (based on GDP) in Tien Giang province averaged 9.2%
in the period 2006-2012. Industrial areas always have high growth
rate, average 15.4%/year in
the period 2006-2012. The economic structure of the province has
shifted in a positive direction: reducing the
proportion of agricultural and fishery products and increasing
the proportion of services, industry - construction. In 2012, in
the GDP, industry - construction accounted for
38.88% and services accounted for 42.1%. Based on the actual
data, income per capita increased from 314 USD in 2000 to 724
USD
in 2005 and 2,214 USD in 2012.
Dong Thap province is one of 13 provinces in the the Mekong
Delta, it has two large rivers flowing through the province
including the Tien river with 114 km length and the Hau river with
30km length. Regarding geographical boundaries, Dong Thap province
borders Cambodia with the length of 48.7km in the north, Vinh Long
and Can Tho in the south, An Giang Province in the west, Long An
and Tien Giang in the east.
Total natural area of Dong Thap is 3,374.08 km2, equipvalent to
8.17% of the Mekong Delta area and 0.99% of the country area.
Maximum length from north to south is 96km and the largest width
from east to west is 84km.
The population of Dong Thap Province was 1.673 million in 2011,
equivalent to 1.95% of the country's population and 9.5% of the
Mekong Delta's population.
About administrative regions, Dong Thap province is divided into
twelve administrative units including: 1 city (Cao Lanh), 2 towns
(Sa Dec and Hong Ngu) and 9 districts comprising: Tan Hong, Hong
Ngu, Tam Nong, Thanh Binh, Thap Muoi, Cao Lanh, Lap Vo, Lai Vung
Chau Thanh. The whole province has 119 communes, 9 towns and 17
wards. Rate of Economic growth (based on GDP) in Dong Thap province
averaged 13.4% in the
period 2006-2012. Rate of Economic growth of GDP averaged 9.7%
in 2012. The economic structure of the province has shifted in the
right direction: before 2010, agriculture - forestry - fishery
reached 41.0%, industry - construction: 27.0%, trade - service:
32.0% ( objectives of 5 year plan, until 2010, the above rates on
the order are
40.5%, 28.8%, 30.7%). Based on the actual data, income per
capita increased from 406 USD in 2005 to 1,180
USD in 2012.
4.6.2. Society The results of survey and investigation on the
socio-economic situation in the communes
in the subproject area in May 2014 are shown as follows: -
Average number of persons in a HH 4.30 persons/HH
+ Man 52.32 % + Woman 47.68 %
- Age groups
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Transmission Efficiency Project Subproject of " Improvement and
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+ 1 – 17 yrs 12.20 % + 18 – 60 yrs 87.21 %
+ Above 60 yrs 1.59 % - Heads of HH
+ Man 93.50 % + Woman 6.50 %
- Income (annually average income) 85,260,228 VND/HH/year -
Average annual expenses 74,400,000 VND/HH/year
Healthcare In every district in the subproject area, there is 1
hospital at the center of district and 1
healthcare station in every commune. The commune healthcare
station usually takes care of minor illnesses and childbirth
for
women in the commune. District hospitals can cure and treat more
serious diseases and do activities to protect public health.
However, health care for workers and the poor has not been
guaranteed due to the lack of necessary medical equipment.
Income Main sources of income:
+ Farming 12.12%
+ Wage-earner 53.18%
+ Housewifery 11.35%
+ Others 11.33% It is difficult to specify exactly source of
income and income, since many HHs have no
source of main income and many affected households do not have
stable sources of income. Many households have multiple sources of
income and their income sources vary with fluctuations in harvests
and prices of crops.
Average income The socio-economic survey in the subproject area
showed that the average income in the
project areas is around 85,260,228 VND/HH/year.
4.7. Protected areas, natural reserves, sensitive areas,
cultural heritages, historical monuments, temples and pagodas in
the subproject area
There is no protected area, natural reserve, sensitive area,
cultural heritage or historical monument in the subproject
area.
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Transmission Efficiency Project Subproject of " Improvement and
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Power Engineering Consulting Joint Stock Company 3 33
Figure 4.1. Existing and proposed protected areas around the
subproject area
5. POTENTIAL IMPACTS The subproject would contribute to meeting
the demand load in Tien Giang, Dong
Thapand adjacent area and thereby bring about significant
socioeconomic benefit. Apart from such benefits, the subproject may
also result in environmental and socioeconomic impacts which are
adverse to the local conditions.
The environmental screening of the subproject indicates that it
is eligible for financing considering that the subproject would not
involve possible high risk and would not create any potential
adverse impacts on (a) critical natural habitats and/or protected
area including proposed protected areas; (b) loss or damage to
physical cultural resources, including sites having archeological
(prehistoric), paleontological, historical, religious, cultural and
unique natural values; and (c) water regime, particularly water
flow and water quality.
TBA 220kV Cai Lậy
TBA 220kV Cao Lãnh
Tiễu dự án
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Transmission Efficiency Project Subproject of " Improvement and
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Environmental Management Plan
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The implementation of the subproject would mainly cause land
acquisition, increased dust generation, air pollution, domestic
waste, and health and safety issues due to construction activities
and electrical magnetic field. However, these impacts are not
significant, temporary, localized impacts with available mitigation
measures. In addition, the subproject will relocate 6 graves, so OP
4.01, OP 4.11 and OP 4.12 are triggered for this subproject.
Screening for assessment of eligible of the subproject location
are identified in table 5.1 The potential negative impacts of the
subproject are identified in table 5.2 and could be
minimized by applying the proposed mitigation measures developed
for the subproject which are described in Table 5.3.
Table 5.1. Environmental rapid assessment checklist of the
subproject
Screening Question Yes No
1. Subproject's sitting: Is the Subproject site adjacent to or
within any of the following environmental sensitive areas?
- Cultural heritages x
- Protected areas such as National Parks, Nature Reserves,
Bio-conservation areas, bird yards, mangrove forest etc.
x
- Wetlands x
- Forests x
- Estuaries x
- Buffer zone of Protected areas x
- Rivers and reservoirs x
- Channel, ditch x
2. Potential environmental impacts Will the Subproject
cause:
Encroachment on historical/cultural areas x
Encroachment on critical ecosystem (e.g. sensitive or protected
area, national park, nature reserve etc....)
x
Disfiguration of landscape and increase waste generation x
Removal of vegetation cover or cut down of trees resulted from
clearance along ROW?
x
Change of surface water quality or water flows
- Increase water turbidity due to run- off and erosion x x
- Waste water from camping sites is directly discharged to the
surface water resources or not?
x
- Construction waste is directly discharged to the surface water
or not? x
Increase the dust level? x
Increase noise and/or vibration? x
Permanent land acquisition x
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Transmission Efficiency Project Subproject of " Improvement and
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Screening Question Yes No
Temporary land acquisition x
Land in ROW x
Is there any risk of disease dissemination from construction
workers to the local peoples (and vice versa)?
x
Is there any potential for conflict between construction workers
and local peoples (and vice versa)?
x
Are explosive and hazardous chemicals used within the
Subproject? x
In the past, there was any accident incurred due to landmines or
explosive materials remaining from the war?
x
Will Subproject's construction cause disturbance to the
transportation in the Subproject's site?
x
Subproject's construction will cause any damage to the existing
local roads, bridges or other rural infrastructures?
x
Will soil excavation during Subproject's construction cause soil
erosion? x
Will Subproject need to open new access roads? x
Will Subproject cause fragmentation of habitat of flora and
fauna? x
Will Subproject cause impact on air quality? x
Will Subproject cause accident risks for workers and community
during construction phase?
x
Will Subproject cause risk to safety and human health (electric
and magnetic fields, electric shock etc.)?
x
Conclusion: The implementation of the subproject would mainly
cause land acquisition, increased
dust generation, air pollution, and domestic waste. However,
these impacts are not significant, temporary, and localized, and
can be mitigated available mitigation measures. Only OP 4.01 and OP
4.12 are triggered for this subproject. Therefore, the subproject
is eligible for funding by the World Bank.
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Transmission Efficiency Project Subpoject of " Improvement and
upgrading the Cai Lay - Cao Lanh 220 kV transmission line"
Environmental Management Plan
Power Engineering Consulting Joint Stock Company 3 36
Table 5.2. Potential impacts of the subproject
No Impact Magnitude Duration Description of the impacts
Evaluation of impacts
Pre-construction phase
1 Permanent and temporary land acquisition
Medium Short and
Long
- Total permanent land acquisition of the project is land for
foundations of the transmission line, this is 25,203 m2. - Land in
the ROWs is 704,848 m2. This land will not be acquired but trees
higher than 4 m can not planted. - Total temporary land acquisition
is 43,000 m2. This land is mainly used for rice and dry crop
cultivation.
Medium and mitigable
2 Impact on Subproject affected household
Medium Long term
- Total number of HHs affected by the Project is 712 HHs; -
Affected types: land lost for foundation; having house within ROWs;
loss of trees and crops, rice; trees will be damaged during cable
pulling; change type of trees within ROWs etc. - There are 396
structures within ROWs (including pig sheds, kitchens, warehouses
etc.) These structures are not required to be removed, but some
modification, repairing are required to meet technical requirements
such as roofs and walls need to be made from non-flammable
materials; metal parts need to be grounded; structures should not
block access to maintain ROWs, high voltage transmission line etc;
- No HH needs to be resettled; - Subproject owner will develop and
implement Compensation plan.
Medium
3 Loss of vegetation due to land clearance for ROWs
Medium
Long - Areas that transmission line will overpass mainly rice
fields, gardens for fruit trees. Besides rice field, number of
trees to be cut for acquisition land is 8,282 trees in Tan Uyen
district; 1,538 trees in Thuan An town. Names of cut trees are:
jackfruit, longan, acerola, tamarind, mango, bamboo, … - These
trees mainly have economic value; ecological value of these trees
is not high.
Medium
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Transmission Efficiency Project Subpoject of " Improvement and
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Power Engineering Consulting Joint Stock Company 3 37
No Impact Magnitude Duration Description of the impacts
Evaluation of impacts
4 Health risk due to chemical hazard
None None - No hazardous chemical will be used for the
Subproject. Since 1995, EVN does not allow to buy equipment
containing PCB. Therefore there will not be PCBs containing
equipment used for the Subproject; - Non of Subproject component is
replacement or removal of old equipment so there will be no risk of
encountering of PCB equipment; - Subproject will not use chemicals
or explosives;
None
5 Impact on historical and cultural properties
None None - There are no historical and cultural resources near
and inside the Subproject area
None
6 Health risks caused by Unexploded Ordnance (UXOs)
Medium Short The implementation of the construction of
transmission lines in the area of types of UXOs left from the war
could lead to serious consequences, dangerous to human life and
property of the workers and people local, adversely affect the
environmental quality of the area. Before commencing construction
activities, the project will deal with specialized military units
to perform leakage find mines and explosives in the area all nail
column, the total area of demining, animals explosion in the
project area is 39,248 m2. Therefore, the risk of accident due to
residual mine is low
High
Construction phase
7 Surface water contamination.
Medium Short - The surface water can be more turbid due to soil
residues, particles generated from excavation of poles’
foundations. These particles flow into rivers, streams, lakes,
ponds. - The subproject crosses the ditchabout 8.5m length (section
G6-G7 in Thuan An town). These are source of surface water that
might be more turbid in rainy season due to washing out of
subproject’s construction materials, excavated soil. - Though the
transmission line will cross the ditch but foundations are designed
about 70 – 100 m far from ditch shores. Hence soil
Medium and Mitigable
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Transmission Efficiency Project Subpoject of " Improvement and
upgrading the Cai Lay - Cao Lanh 220 kV transmission line"
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No Impact Magnitude Duration Description of the impacts
Evaluation of impacts
excavation and damming are carried out far from these shores,
therefore potential risks on land slides from these shores are not
high. At the sites near fishponds, the subproject foundations will
construct far from ponds (above 50 m). From the foundation sites to
fish ponds are trees, rice fields so potential for debris washed
out from subproject excavation to these ponds is also low. -
Topography of subproject site is plain with good vegetation cover.
- Subproject sites near surface water bodies are also plain so
potential for soil erosion, material washing out is low. -
Excavation is planned to do in dry season. Excesses soil will be
reused to fill in the poles’ foundations. Thus there will be no
soil, rock left after the subproject construction. - No tower will
be constructed in ditch. - Thus the impact on surface water
pollution in the subproject area is assessed as medium and can be
mitigated.
8 Noise and vibration
Medium Short - Noise and vibration are caused by: equipment,
material transportation, subproject's vehicles, pole's erection and
cable's pulling, generators (if there are any) - Most part of the
220 kV line is designed to be far from residential areas as well as
the concentration of human activities such as towns and townships.
Main part of the transmission line will be far from residential
areas. - The main work will be done manually or by small scale
machines. Duration of construction for each site at pole’s
foundation is short from 2 or 3 days for foundation excavation, 5
days for pouring concrete, 2 or 3 days for cable pulling. Noise and
vibration (if there is any) will be caused only during very short
period of time in each foundation position; - Owing to these
mentioned reasons, the noise and vibration impact caused by the
subproject is considered as medium.