THE SOCIALIST REPUBLIC OF VIETNAM
MINISTRY OF AGRICULTURE AND RURAL DEVELOPMENT
March, 2012
THE SOCIALIST REPUBLIC OF VIETNAM
MINISTRY OF AGRICULTURE AND RURAL DEVELOPMENT
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EMP for Subproject “Repairing and Upgrading critical sections of Cau Chay River left bank Dyke from K0 to K42 in Yen Dinh district - Thanh Hoa Province - VN-Haz / 2011Vietnam Managing Natural Hazards Project (VN-Haz)
Environment Management Plan (EMP) for Subproject “Repairing and Upgrading Critical Sections of Cau Chay River Left Bank Dyke from K0 to K42 in Yen Dinh District - Thanh Hoa Province
REEN.JSCMarch, 2012
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EMP for Subproject “Repairing and Upgrading critical sections of Cau Chay River left bank Dyke from K0 to K42 in Yen Dinh district - Thanh Hoa Province - VN-Haz / 2011Currency equivalent
Unit = Vietnam Dong (VND)
1 VND = 0.00004878048 $
1 $ = 20,500 VND
Abbreviations
BOD Biochemical Oxygen Demand
CBDRM Community-based Disaster Risk Management
CEPCommunity Engagement Program
CNFCommune Fatherland Front
CPCCommune People Committees
CPMOCentral Project Management Office
CPOCentral Project Office of MARD
CSCConstruction Supervision Consultant
CSEPContract Specific Environmental Plan
DARD Department of Agriculture and Rural Development
DONRE Department of Natural Resources and Environment
EIA Environmental Impact Assessment
ECOPEnvironmental Code of Practices
EMDPEthnic Minority Development Plan
EMPEnvironment Management Plan
ESMFEnvironment and Social Management Framework
GoV Government of Vietnam
LEP Law on Environmental Protection
MARD Ministry of Agriculture and Rural Development
OPOperation Policy of World Bank
PESUProvincial Environment and Social Safeguard Unit
PPCProvincial People’s Committee
PPMUProvincial Project Management Unit
QCVN National Technical Regulations
RAPResettlement Action Plan
EAEnvironment Assessment
RPFResettlement Policy Framework
TCVN National Environmental Standards
UXOUnexploded Ordnances
WB World Bank
Unit
m3 Cubic meter
m2 Square meter
kg Kilogram
Note
(i) The fiscal year of Vietnam government ended on December 31st every year. The previous fiscal year represents the calendar year in which the fiscal year end, for example, fiscal year 2000 ended on December 31st, 2000.
(ii) In this report, “$” means United States Dollars (USD).
TABLE OF CONTENTS
TABLE OF CONTENTS
EXECUTIVE SUMMARY
I.INTRODUCTION
II.SUBPROJECT DESCRIPTION
a.Finalizing the cross-section and strengthening dyke surface:
b.Strengthening and protecting the river bank at 11 critical sections:
c.Constructing and repairing 54 under-dyke culverts:
d.Constructing Yen Phu new drainage pumping station at K7+588.7:
e.Construction of 11 dyke management houses:
f.Constructing 6 rescue and relief access road sections
g.Activities at borrow pit sites.
III.ENVIRONMENTAL BACKGROUND
3.1.General Characteristics and Land Use
3.2.Soil and Water Quality
3.3.Natural disasters in the subproject area
IV.POTENTIAL IMPACTS AND MITIGATION MEASURES
4.1Potential Positive Impacts
4.2Safeguard Screening and Identification of Issues
a)Initial screening
b)Identification of issues
c)Potential negative impacts and mitigation measures
4.3Social Impacts
4.4Environmental Impacts and Mitigation Measures
a)Construction phase
b)Operation phase
4.5Summary of Impacts and Mitigation Measures
V.SUBPROJECT MONITORING PROGRAM
5.1Actions to be Taken during Subproject Implementation
5.2Environmental Monitoring Program
a)Contractor performance monitoring
b)Monitoring effectiveness of the proposed mitigation measures
VI.IMPLEMENTATION ARRANGEMENT
6.1Organization and Responsibilities
6.2Monitoring and Reporting
6.3Budget Arrangement
6.4Consultation and Information Disclosure
LIST OF TABLES
Table 2.1: Technical standards for the critical dyke sections
Table 2.2: Technical design parameters for culverts
Table 2.3: Summary of the subproject construction quantities
Table 2.4: Location and surveyed volume of borrow pit sites
Table 4.1: Results of safeguard screening for Cau Chay subproject
Table 4.2: Potential negative impacts of the subproject
Table 4.3. Summary of acquired land area in the 11 communes (Unit: m2)
Table 4.4: Potential Negative Impacts of the Subproject (Cau Chay)
Table 4.5: Mitigation measures proposed for the subproject
Table 6.1: Institutional responsibilities for the Subproject
Table 6.2 Reporting procedure
LIST OF FIGURES
Figure 2.1 Cross section of a Dyke
Figure 2.2 Longitudal profiles of a Culvert
Figure 2.3 Location of the Subproject
Figure 3.1: Location of the Subproject in relation to the National Parks in the Ma river basin
LIST OF ANNEXES
ANNEX 1: STANDARD ENVIRONMENTAL CODES OF PRACTICE (ECOP) FOR THE SUBPROJECT
ANNEX 2: GENERIC TOR FOR CONSTRUCTION SUPERVISION CONSULTANT (CSC)
ANNEX 3: RESULTS OF SAMPLE ANALYSIS
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EMP for Subproject “Repairing and Upgrading critical sections of Cau Chay River left bank Dyke from K0 to K42 in Yen Dinh district - Thanh Hoa Province - VN-Haz / 2011EXECUTIVE SUMMARY
Background: The Subproject “Repairing and Upgrading Critical Sections of Cau Chay River Left Bank Dyke from K0 to K42 in Yen Dinh District - Thanh Hoa Province” is one of the six subprojects to be implemented in the first year of the Vietnam Managing Natural Hazards Project (VN-Haz project or the Project). The objective of the subproject is to rehabilitate and upgrade Cau Chay left bank river dyke from K0 - K42 and on-dyke structures for protecting lives and properties of more than 130,000 people on an area of 10,000 ha in 25 communes and towns of Yen Dinh District.
Description: The subproject activities will include repairing, upgrading the dyke and its 11 critical sections with a total length of about 2 kilometers (km) and 11 management houses; constructing and/or rebuilding 54 culverts; building approaching ramps to the dyke and 6 access roads (about 9 km); and constructing Yen Phu pumping station to drain floods for 893 hectares (ha).
Impacts and mitigations: The overall impacts will be positive. The main negative impacts would be due to (a) minor land acquisition, (b) site survey/clearance and construction activities, and (c) and risk due to inappropriate operation of culverts and inadequate maintenance and operation of dykes. No dredging will be required under the subproject.
The subproject area is mainly agricultural land, with no critical natural habitat. Total area of permanently and temporary acquired land is 147,337 square meters (m2) and 537,673 m2, respectively. There are total of 697 households (HHs) with 3,144 people of the 11 subproject communes. Details on the number of the affected HHs and Project Affected People (PAPs) can be found in the Resettlement Action Plan (RAP) of the subproject. There are 03 graves of 03 HHs in the subproject area that will be affected. The affected population will be compensated in line with the Resettlement Policy Framework (RPF) and RAP. No ethnic minority will be involved in the subproject.
The potential negative impacts during site clearance and construction would be mainly due to embankment rehabilitation and access road construction activities which could increase the level of air, noise, vibration, and water pollution and local traffic volume. These impacts would be localized and temporary and could be mitigated by: (i) ensuring that contractors apply good construction practices by application of the Environmental Code of Practices (ECOP); (ii) maintaining close consultation with local authorities and communities throughout the construction period; and (iii) close supervision of field engineers as well as the environmental staff. The subproject ECOP has been prepared and it will be included as an annex to the bidding and contract documents and closely monitored and supervised by the construction supervising consultant and local community.
The potential impacts during operation will be limited to potential local flooding which may occur when maintenance (routine and/or periodic) of the dyke is inadequate, inappropriate operation of the culverts, and/or major flood events. To reduce the risks, the implementing agencies responsible for operation and maintenance of these facilities will be required to ensure adequate capacity and resources for these tasks as well as to implement a Community Engagement Program (CEP) to increase knowledge and awareness of the nearby communities on flooding issues.
Actions to be carried out under the subproject: To mitigate the potential negative impacts during pre-construction, construction, and operation phases the following measures will be carried out during the implementation of the subproject in close consultation with local authority and communities, especially the affected households:
- Effectively and timely implement RAP;
- Incorporate ECOP into bidding and contract document and inform bidders;
- Closely supervise and monitor safeguard performance of contractor to ensure effective implementation of measures to mitigate the impacts during site clearance and construction;
- Prepare and implement a Community Engagement Program in close consultation with local communities;
- Ensure effective operation of culverts and adequate budget for maintenance of dyke and assess road.
Responsibility: At subproject level, Thanh Hoa Provincial Project Management Unit (PPMU) will be responsible for ensuring effective implementation of the EMP for the Cau Chay subproject, including reporting the implementation progress and safeguard performance of contractors. PPMU will set up a Provincial Environment and Social Safeguard Unit (PESU) responsible for forging effective implementation of safeguard measures for the subproject, including incorporate appropriate ECOP in the bidding and contract documents and ensure that the bidders are aware of this commitment. PPMU will work closely with the local authorities, agencies, and communities to forge effective implementation of the mitigation measures. PPMU will also hire a group of national consultants to assist in the coordination and/or implementation of the EMP, including periodical supervision on contractors and monitor on environmental quality during the subproject implementation.
At project level, the Central Project Management Office (CPMO) will be responsible for overall supervision and monitoring the implementation progress of the subproject including safeguards. CPMO will hire a group of national consultant to assist in the supervision and monitoring of safeguard measures for the Project, including provide safeguard training to the subproject staff. Budget:
Cost for implementation of mitigation measures during construction, including training on environmental management for workers, consultation with local communities and water users, environment quality monitoring, sediment analysis, and compensation to damage (if any) will be part of the subproject construction cost. This cost will be included in the contract with the contractor and is expected to be 1% of the construction cost
Cost for the day-to-day supervision of contractor’s safeguard performance by the CSC as well as cost for periodic monitoring at the subproject level will be part of the subproject supervision cost. This cost is expected to be 1% of the construction cost.
Cost for periodic monitoring at the project level will be part of the project management of CPMO;
Cost for the implementation of the CEP will be part of the subproject mitigation measures cost and a budget of $50,000 has been allocated for the subproject. This cost is included in Component 3 of the Project;
Cost for periodic supervision and monitoring at the project level will be part of the project management cost of CPMO.
Budget for safeguard training of staff will be part of the subproject management cost.
I. INTRODUCTION
The Subproject “Repairing and Upgrading Critical Sections of Cau Chay River Left Bank Dyke from K0 to K42 in Yen Dinh District - Thanh Hoa Province” is one of the six subprojects to be implemented in the first year of the Vietnam Managing Natural Hazards Project (VN-Haz project). The objective of the subproject is to rehabilitate and upgrade Cau Chay left bank river dyke from K0 - K42 and on-dyke structures for protecting lives and properties of more than 130,000 people on an area of 10,000 ha in 25 communes and towns of Yen Dinh district. The subproject activities will include repairing, upgrading the dyke and its 11 critical sections; rebuilding culverts; building approaching ramps to the dyke and access roads and for saving the dyke in emergencies; and constructing Yen Phu pumping station to drain floods for 893 hectares (ha). These activities may cause negative effects on the local environment and local community during preconstruction, construction, and/or operation. Safeguard screening in line with the criteria described in the Environmental and Social Management Framework (ESMF) suggested that the subproject will trigger the WB’s safeguards policies on Environmental Assessment (OP/BP 4.01), Involuntary Resettlement (OP/BP 4.12), and Physical Cultural Resources (OP/BP 4.11).
To ensure that the potential negative impacts are identified and mitigated during the subproject implementation and in compliance with OP/BP 4.01, an Environmental Management Plan (EMP) has been prepared in line with the guidelines provided in the ESMF. This EMP summarizes the subproject description, the environmental background, potential negative impacts, proposed mitigation measures to be carried out during the subproject implementation. It also includes an environmental code of practice (ECOP) prepared for the subproject and it will be incorporated into the bidding documents and construction contracts as well as an implementation arrangement scope for environment quality monitoring. A Resettlement Action Plan (RAP) has been prepared and presented separately.
The Government’s regulation on EIA requires submission of an EIA report for the subproject. An EIA report has been prepared, submitted to, and approved by Thanh Hoa Provincial People’s Committee.
II. SUBPROJECT DESCRIPTION
The subproject is located in 11 communes of Yen Dinh district, Thanh Hoa province. It spans along the communes of Yen Tam, Yen Giang, Yen Phu, Yen Thinh, Yen Lac, Dinh Tang, Dinh Binh, Dinh Tuong, Dinh Hoa, Dinh Thanh, Dinh Cong. The civil work will be carried out on the left bank of the existing Cau Chay River Dyke (see location in Figure 2.1).
The scope of the civil work includes: (see design diagrams in Figure 2.1&2.2):
- Finalizing the cross-section and strengthening dyke surface:
In average, the dam crest height is elevated by 0.4 meters (m). The design parameters include dyke crest width: B=6.0 (m) of which the dyke surface is strengthened with normal concrete (M250) 20 centimeters (cm) thick, 5.0 m wide on a crush-stone compacted layer by 2 compactors in 20cm thick; two curbs are filled up with hill and rock soil, 0.5m wide each curb, and provided with sign posts: 15x15x105cm; surface slope i = 1%, and curb slope i = 4%.
The riverside and fieldside of dyke slopes are planted with grass for anti-erosion purposes. The dyke section running through residential area shall be made with rural road at dyke toe at width: B = 3 – 5m, lean concrete paved (M200) 20cm thick and underneath is crush-stone aggregated layer in 15 cm thickness.
- Strengthening and protecting the river bank at 11 critical sections:
The civil work includes strengthening the slope with riprap in 30cm thickness in concrete frame, and the slope toe is of stone pitching, 30cm thickness in concrete frames, and the toe is of rock blocks. Exceptionally, at Si bridge foot section is strengthened with pre-cast concrete blocks (M250) dimension: (40x40x16) cm with flexible joints in reinforced concrete frame created by vertical and horizontal beams; at toe is of rock blocks. Along the slope is provided with steps in combination with drains made of concrete. The both ends of the strengthened section are locked with concrete and reinforced concrete. The overall technical design parameters of the 11 critical dyke sections are presented in Table 2.1 below.
Table 2.1: Technical standards for 11 critical embankment sections
No / Reinforced sections / Embankment top level / Embankment foot level / Embankment roof / Embankment length(m)
Total length / - / - / - / 2,036
1 / Bank protection (Km9+325.5 to Km9+505.5) / 9.00 / 5.00 / m=2.0 / 200
2 / Bank protection (Km12+436.8 to Km12+558.8) / 6.0-7.5 / 3.50 / m=2-3 / 122
3 / Bank protection (Km21+341 to Km21+436) / 7.60 / 2.20 / m=2.0 / 95
4 / Bank protection for the section connecting Cau Khai (Km21+781 to Km21+834) / 11.60 / 7.00 / m=2.0 / 53
5 / Bank protection (Km29+463 to Km29+686.4) / 6.70 / 2.50 / m=2.0 / 223.4
6 / Bank protection (Km29+712 to Km29+875) / 6.00 / 2.42 / m=2.0 / 163
7 / Bank protection (Km31+463 to Km31+573) / 6.70 / 2.25 / m=2.0 / 110
8 / Bank protection (Km33+933 to Km34+063) / 4.3 / 2.00 / m=2.0 / 130
9 / Bank protection (Km36+193 to Km36+313) / 2.0 / 1.77 / m=2.0 / 120
10 / Bank protection (Km37+543 to Km37+853) / 5.1-4.2 / 1.64 / m=2.0 / 310
11 / Bank protection (Km39+233 to Km40+043) / 6.60 / 1.50 / m=2.0 / 810
Source: Main FS report, 2011
- Constructing and repairing 54 under-dyke culverts:
Repairing and upgrading 14 under-dyke culverts: these culverts are of reinforced concrete and in good condition however, the dyke cross-section is widened so the culverts shall be extended to match with the new dyke cross-section; the structure of the extension part: reinforced concrete (M250), foundation is treated with bamboo piles, dissipation section at river side is repaired for anti-erosion purposes; replacing valve gates and hoisting equipment at capacity V3 – V5.
40 new under-dyke culverts will be constructed to replace rock or concrete culverts that are damaged. The culverts will take rectangular shape, be reinforced with concrete (M250), concrete valve gates, and hoisting equipment V3 – V5. The culverts are shown in Table 2.2.
Table 2.2: Technical design parameters for culverts
No / Culvert Name / Commune / Section / Number of gates / DesignWidth
(m) / Height
(m)
Building of 40 new culverts
1 / Nang / Yen Giang / Km6+492.7 / 1 / 1.0 / 1.2
2 / Xe / Yen Phu / Km6+492.7 / 1 / 1.0 / 1.2
3 / Nu / Yen Phu / Km10+216 / 1 / 1.5 / 1.8
4 / Phuc Mon / Yen Thinh / Km11+029 / 1 / 0.8 / 1.2
5 / Dong Soi / Yen Thinh / Km12+59.7 / 1 / 1.5 / 1.8
6 / Mo Yen Giang / Yen Thinh / Km13+259 / 1 / 0.8 / 1.2
7 / Tuoi / Yen Thinh / Km13+423 / 1 / 0.8 / 1.2
8 / Giat / Yen Thinh / Km16+932 / 1 / 1.5 / 1.8
9 / Mo / Yen Lac / Km18+798 / 1 / 1.5 / 1.8
10 / Khua Chua / Yen Lac / Km19+494 / 1 / 0.8 / 1.2
11 / Khua Mat / Yen Lac / Km20+419 / 1 / 1.40 / 1.60
12 / Vinh / Yen Lac / Km21+648 / 1 / 1.40 / 1.60
13 / Under-dyke irrigation culvert / Yen Lac / Km22+148 / 1 / 0.80 / 0.80
14 / Dinh Tang / Dinh Tuong / Km22+657 / 1 / 1.40 / 1.60
15 / Under-dyke irrigation culvert / Dinh Tuong / Km23+521 / 1 / 0.8 / 0.8
16 / Under-dyke irrigation culvert / Dinh Tuong / Km23+706 / 1 / 0.8 / 0.8
17 / Under-dyke irrigation culvert / Dinh Tuong / Km23+874 / 1 / 0.8 / 0.8
18 / Loc Coc / Dinh Tuong / Km24+513 / 1 / 0.8 / 0.8
19 / Loc Coc irrigation culvert / Dinh Tuong / Km24+533 / 1 / 0.8 / 1.3
20 / Phu Tho1 / Dinh Tuong / Km24+926 / 1 / 0.8 / 0.8
21 / Phu Tho2 / Dinh Tuong / Km25+227 / 1 / 0.8 / 0.8
22 / Phu Tho3 / Dinh Tuong / Km25+411.5 / 1 / 0.8 / 0.8
23 / Phu Tho4 / Dinh Tuong / Km25+486 / 1 / 0.8 / 0.8
24 / Cau Lim pump station / Dinh Tuong / Km25+595 / 1 / 0.8 / 0.8
25 / Phu Tho 5 / Dinh Tuong / Km25+673 / 1 / 0.8 / 0.8
26 / Phu Tho 6 / Dinh Tuong / Km25+722 / 1 / 0.8 / 0.8
27 / Phu Tho 7 / Dinh Tuong / Km25+911 / 1 / 0.8 / 0.8
28 / Phu Tho 8 / Dinh Tuong / Km26+145 / 1 / 0.8 / 0.8
29 / Phu Cuong 1 / Dinh Tuong / Km26+906 / 1 / 0.8 / 0.8
30 / Boi Lim pump station / Dinh Tuong / Km28+025 / 1 / 0.8 / 0.8
31 / Boi Lim village / Dinh Tuong / Km28+325 / 1 / 0.8 / 0.8
32 / Chua Boi pump station / Dinh Tuong / Km28+753 / 1 / 0.8 / 0.8
33 / Xi Rao pump station / Dinh Binh / Km29+337 / 1 / 0.8 / 0.8
34 / Xi Rao / Dinh Binh / Km29+409 / 1 / 0.8 / 0.8
35 / Under-dyke irrigation culvert / Dinh Binh / Km30+293 / 1 / 0.8 / 0.8
36 / Under-dyke irrigation culvert / Dinh Binh / Km30+685 / 1 / 0.8 / 0.8
37 / Under-dyke irrigation culvert / Dinh Binh / Km31+073 / 1 / 0.8 / 0.8
38 / Under-dyke irrigation culvert / Dinh Thanh / Km37+312 / 2 / 1.4 / 1.6
39 / Under-dyke irrigation culvert / Dinh Thanh / Km37+628 / 1 / 0.8 / 0.8
40 / Under-dyke irrigation culvert / Dinh Thanh / Km38+507 / 1 / 1.4 / 1.5
Extending of 14 old culverts to accommodate the new dyke cross-section
41 / Huu / Yen Phu / Km7+506.7 / 2 / 1.25 / 1.50
42 / Phuc tinh / Yen Giang / Km10+502 / 1 / 0.75 / 0.75
43 / Yen Thinh / Yen Giang / Km15+868 / 1 / Ø60 (circle cross-section)
44 / Xuan Tan / Yen Giang / Km16+703 / 1 / Ø 55(circle cross-section)
45 / Cau But / Yen Giang / Km18+264 / 1 / 1.7 / 1.70
46 / Doc Loan / Dinh Tuong / Km23+782 / 1 / 1.50 / 1.65
47 / Ha De / Dinh Tuong / Km27+546 / 1 / 1.30 / 1.45
48 / Chua Boi / Dinh Tuong / Km28+996 / 1 / 1.10 / 1.10
49 / Under-dyke irrigation culvert / Dinh Thanh / Km33+594 / 1 / 1.50 / 1.60
50 / Under-dyke irrigation culvert / Dinh Thanh / Km34+223 / 1 / 0.90 / 1.20
51 / Under-dyke irrigation culvert / Dinh Thanh / Km35+588 / 4 / 1.50 / 3.20
52 / Under-dyke irrigation culvert / Dinh Thanh / Km35+650 / 2 / 1.50 / 3.20
53 / Under-dyke irrigation culvert / Dinh Thanh / Km36+219 / 1 / 0.80 / 0.80
54 / Under-dyke irrigation culvert / Dinh Cong / Km39+546 / 1 / Ø 40(circle cross-section)
Source: Main FS report, 2011