Summary Environmental Impact Assessment June 2015
PRC: Guiyang Integrated Water Resources
Management (Sector) Project
Prepared by Guiyang Municipal Government for the Asian Development Bank.
CURRENCY EQUIVALENTS (as of 19 June 2015)
Currency unit – yuan (CNY)
CNY1.00 = $0.1611 $1.00 = CNY6.2090
ABBREVIATIONS
ADB – Asian Development Bank CNY – Chinese yuan EIA – environmental impact assessment EMP – environmental management plan EPB – environmental protection bureau ESSD – environment and social safeguard division ESSG – environment and social safeguard group GIWRMP – Guiyang Integrated Water Resources Management
Project GMG – Guiyang Municipal Government IEE – initial environmental examination IPM – integrated pest management LRB – land resources bureau MEP – Ministry of Environmental Protection O&M – operation and maintenance PMO – project management office PRC – People’s Republic of China SEAF – summary environmental assessment framework SEIA – summary environmental impact assessment SIEE – summary initial environmental examination TA – technical assistance WRB – water resources bureau
WEIGHTS AND MEASURES
ha – hectare km – kilometer km2 – square kilometer mg/L – milligram per liter m2 – square meter mm – millimeter m3/s – cubic meter per second mu – 1/15 of a hectare
NOTES
(i) The fiscal year (FY) of the Government of the People’s Republic of China and its agencies ends on 31 December.
(ii) In this report, "$" refers to US dollars. This environmental impact assessment is a document of the borrower. The views expressed herein do not necessarily represent those of ADB's Board of Directors, Management, or staff, and may be preliminary in nature. Your attention is directed to the “terms of use” section on ADB’s website. In preparing any country program or strategy, financing any project, or by making any designation of or reference to a particular territory or geographic area in this document, the Asian Development Bank does not intend to make any judgments as to the legal or other status of any territory or area.
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SUMMARY ENVIRONMENTAL IMPACT ASSESSMENT HONGYAN RESERVOIR SUBPROJECT
GUIYANG INTEGRATED WATER RESOURCES MANAGEMENT PROJECT
IN THE
PEOPLE’S REPUBLIC OF CHINA
April 2015
5
ABBREVIATIONS
ADB – Asian Development Bank
CNY – Chinese Currency Yuan
EA – Environmental Assessment
EIA – Environmental Impact Assessment
EMP – Environmental Management Plan
EPB – Environmental Protection Bureau
ESSD – Environment and Social Safeguard Division
ESSG – Environment and Social Safeguard Group
GIWRMP – Guiyang Integrated Water Resources Management Project
GMG – Guiyang Municipal Government
IA – Implementing Agency
IEE – Initial Environmental Examination
IPM – Integrated Pest Management
LRB – Land Resources Bureau
MEP – Ministry of Environmental Protection
O&M – Operation and Maintenance
PMO – Project Management Office
PRC – the People’s Republic of China
RP – Resettlement Plan
RMB – Chinese Currency Yuan
SEAF – Summary Environmental Assessment Framework
SEIA – Summary Environ mental Impact Assessment
SIEE – Summary Initial Environmental Examination
TA – Technical Assistance
WRB – Water Resources Bureau
WEIGHTS AND MEASURES
ha – hectare
km – kilometer
km2 – square kilometer
mg/L – milligram per liter
m2 – square meter
6
mm – millimeter
m3/s – cubic meter per second
mu – 1 mu=1/15 ha
7
CONTENTS
I. INTRODUCTION .................................................................................... 9
II. PROJECT DESCRIPTION ................................................................... 10
III. DESCRIPTION OF THE ENVIRONMENT ........................................... 14
A. Physical Environment ..................................................................... 14
B. Environmental Quality .................................................................... 15
C. Ecological Environment .................................................................. 15
D. Socioeconomic Conditions ............................................................. 16
IV. ALTERNATIVES ................................................................................... 17
A. Environmental Considerations ....................................................... 17
B. With or Without the Project ............................................................. 17
C. Alternative Sites for Dam ................................................................ 17
D. Alternative Types for Dams ............................................................ 18
E. Alternative Normal Storage Level ...................................................... 18
F. Alternative Spoil Site ......................................................................... 18
V. ANTICIPATED ENVIRONMENTAL IMPACTS AND MITIGATION
MEASURES ................................................................................................... 19
A. Incremental Environmental and Social Benefits ............................. 19
B. Design Considerations ................................................................... 19
C. Identification of Adverse Environmental Impacts ............................ 20
D. Anticipated Adverse Impacts during Construction and Mitigation
Measures ................................................................................................ 20
E. Anticipated Adverse Impacts during Operation and Mitigation
Measures ................................................................................................ 27
VI. Environmental Risk Assessment .......................................................... 36
A. Explosives and Oil .......................................................................... 36
B. Dam safety ..................................................................................... 37
C. Landslide of Spoil Sites .................................................................. 37
D. Risk Related to Water Supply Pipelines ......................................... 37
E. Hazardous Waste .............................................................................. 38
VII. ECONOMIC ASSESSMENT ................................................................ 38
VIII. ENVIRONMENTAL MANAGEMENT PLAN ....................................... 39
A. Environmental Management .......................................................... 39
B. Environmental Monitoring ............................................................... 39
C. Institutional Strengthening .............................................................. 40
IX. PUBLIC CONSULTATION AND INFORMATION DISCLOSURE ......... 41
A. Public Consultation during Project Preparation .............................. 41
B. Future Plans for Public consultation and information disclosure .... 42
IX. CONCLUSIONS ................................................................................... 42
A. Project Summary ............................................................................ 42
B. Potential Adverse Impacts and Mitigation Measures ...................... 42
C. EMP Development and its Implementation .................................... 43
8
D. Public Consultation......................................................................... 43
E. Conclusions and Recommendations ................................................. 43
APPENDICES
Appendix 1: Environmental Management Plan
FIGURES
Figure 1: Location of Hongyan Reservoir Subproject ............................. 11
Figure 2: Schematic map of subproject components .............................. 11
Figure 3: Optional Dam Sites Considered .............................................. 18
Figure 4: Proposed Drinking Water Source Protection Zoning for Hongyan
Reservoir ......................................................................................... 32
TABLES:
Table 1: Major Components of Hongyan Reservoir Subproject .............. 12
Table 2: Major Social and Economic Conditions of Huaxi Dis. and Maling
Township ......................................................................................... 16
Table 3: Identification of Potential Environmental Impacts ..................... 20
Table 4: General Environmental Impacts during Construction and
Mitigation Measures ........................................................................ 21
Table 5: Land Acquisition of Hongyan Reservoir subproject (unit: ha) ... 25
Table 6: Investigation Results of Downstream Water Use ...................... 29
Table 7: Environmental Benefits and Cost .............................................. 38
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I. INTRODUCTION
1. Purpose of the SEIA The Summary Environmental Impacts Assessment report
(SEIA) was prepared based on the Chinese version Environmental Impacts
Assessment report prepared for the Hongyan Reservoir subproject, one newly
proposed reservoir subproject under the Guiyang Integrated Water Resources
Management Project (GIWRMP, the Project). The SEIA is to be submitted to ADB for
review and disclosure on ADB website.
2. The GIWRMP A loan agreement has been signed by the ADB and the PRC
Government on a loan of USD150 million for the GIWRMP in June 2010 to support
Guiyang Municipality in utilizing scarce water resources by improving conservation,
management, and development of water resources through integrated water
resources management (IWRM). The project will finance urban water supply, rural
water supply and irrigation, irrigation system rehabilitation, soil and water
conservation, and small water storage structures. The project will also address
non-structural interventions including institutional development and capacity
strengthening, stakeholder participation, water tariff adjustments, and
demand-management measures. With project implementation, changes have been
made to the subprojects. Originally, the project was planned to include 66 subprojects
(6 core and 60 noncore). According to the ADB Review Mission in November 2013, 1
core and 33 noncore subprojects have been withdrawn and another core subproject
will be withdrawn from the project; 2 noncore subprojects (Hongyan and Taoyuan
medium-sized reservoirs) are being proposed.
3. Environmental Assessment for the GIWRMP Following PRC regulations, a
general Environmental Impacts Report (EIR) for the overall project was prepared in
August 2008, which had been approved by the Ministry of Environmental Protection
(MEP) on 19 January 2009. This approval, according to PRC regulations, covers all
the subprojects proposed during the preparation of GIWRMP. For the newly proposed
subprojects, new environmental assessment approvals are needed including the
Hongyan Reservoir Subproject.
4. For ADB’s environmental assessment purposes, the Project has been classified
as Category A. The Project will be implemented under a sector loan modality, and six
core subprojects have been prepared to ADB standards. A summarized SEIA for 3
core reservoir subprojects and a summarized SIEE for the other 3 core subprojects
were completed in 2006, which have been reviewed by ADB environmental
specialists, and posted on the ADB website on 21 August 2006. The environmental
safeguard review procedure by ADB for new components will follow the Summary
Environmental Assessment Framework (SEAF) agreed during project preparation in
2009, as presented in the following paragraph.
10
5. Summary Environmental Assessment Framework For the remaining
non-core subprojects, a Summary Environmental Assessment Framework (SEAF)
was prepared and included, as Attachment 11, in the “Memorandum of Understanding
(ADB appraisal mission with Guiyang Government, March 2009)”. The SEAF
describes principle environmental assessment requirements for the non-core
subprojects including environmental screening requirements for the reservoir
subprojects.
6. Environmental Screening for Noncore Reservoir Subprojects In
accordance with the SEAF, an environmental screening was carried out for the
non-core reservoir subprojects in the period of September to December 2009 by
Guiyang PMO and local PMOs with assistance of ADB’s environmental consultant
and 5 of the remaining 39 non-core reservoir subprojects were rated Category A and
34 Category B, which had been confirmed by ADB on Dec. 17, 2009. As per
“Memorandum of Understanding (ADB review mission for GIWRMP, November
2009)”, Hongyan Reservoir Subproject has been confirmed as a Category A
subproject, according to the SEAF, a Chinese full EIA and an English SEIA for the
subproject needs to be prepared and submitted to ADB for review and approval
before subproject implementation.
7. Basis of the SEIA The SEIA is primarily based on information contained in the
Chinese EIA report for the subproject, which was prepared by an environmental
assessment team from Guiyang Survey and Design Research Institute under China
Hydropower Consulting Group.
8. The Chinese EIA and this SEIA were prepared in accordance with both PRC
environmental laws and regulations and ADB environmental policies as well as with
both PRC and ADB guidelines on environmental assessment.
II. PROJECT DESCRIPTION
9. The Hongyan Reservoir project is located in Huaxi District of Guiyang
Municipality as shown in Figure 1. The outputs of the Hongyan reservoir subproject
include: (i) a reinforced concrete face rockfill dam with the height of 52.4m, (ii) a
reservoir with a storage capacity of 14.46 million m3; (iii) 22.5km of raw water
transmission pipelines; (iv) 4.695km of irrigation pipelines; (v) a pumping station
installed with 4 pumps (3 for water supply, 1 for irrigation); (vi) a water intake power
house with the installed capacity of 800kW as the reconstruction of an existing power
station affected by project implementation. Figure 2 shows the schematic map of
major subproject components.
10. The Hongyan Reservoir will cover a catchment area of 152.5 km2 and an average
flow of 2.84m3/s. Major objective of the reservoir is to provide annually (i) 31.90 million
m3 water supply (P=95%) to the south of Guiyang Municipality for domestic and
11
industrial use; and (ii) 1.09 million m3 water supply (P=80%) to 3060mu of farmland
downstream of the dam for irrigation.
11. The project will lead to the permanent land acquisition of approximate 181.01ha
(2715.22mu) of land and the relocation 1 of 911 persons and the production
resettlement of 1078 persons in 2015. The total cost of the subproject is estimated to
be CNY607.63 million. Table 1 below shows the main components and indexes of the
subproject.
Figure 1: Location of Hongyan Reservoir Subproject
1 Relocated population refers to those who have to be relocate their residence due to direct and indirect impacts of
the proposed project; however, population requiring production resettlement refers to those whose livelihood is
affected by land acquisition for the project implementation and requires livelihood restoration measures.
Figure 1
Location of Hongyan Reservoir Subproject
Xifeng
Hongyan Reservoir
12
Figure 2: Schematic map of subproject components
Reservoir
Reservoir area at normal water level:
1.19 km2
Reservoir catchment area: 152.5 km2
Total storage capacity: 14.46 million
m3
Dam
Type: reinforced concrete face rockfill dam
Height: 52.4m, length: 145.23m
Main Pipe for
Irrigation
Length:3.9 km (800m
to share by irrigation
and urban WS
Irrigation area: 4774
mu
Pumping Station
Design flow rate: 1.39m3/s
3*0.605m3/s for urban WS
(2 in use and 1 standby)+
1*0.18m3/s for irrigation
Duimenpo Branch
Pipe
Length: 0.500 km
Irrigation area: 275mu
Haicaitang Branch
Pipe
Length: 0.545 km
Irrigation area: 796mu
Xiaba Branch Pipe
Length: 0.550 km
Irrigation area: 816mu
Irrigation
Maling Township
Total irrigation area: 204hm2
Annual water supply: 1.09million m3
Transmission Pipeline
Length:22.5km,
Diameter: 1000mm
Urban water supply
Service area: South of Guiyang
Municipality (industrial and domestic)
Annual water supply: 31.90 million m3
Tunnel 133.65m (shared
with tunnel for power house)
Power Generation
Water intake type
Installed capacity: 800kW
Firm output: 75kW
Annual power generation:
2930MWh
Tunnel 240.87m (133.65m to share
with urban water supply system)
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Table 1: Major Components of Hongyan Reservoir Subproject
No Name of Component Unit Quantity
1. Reservoir
1.1 Dam height m 52.4
1.2 Dam type Reinforced concrete face rockfill dam
1.3 Dam crest Length m 145.23
1.4 Reservoir catchment area km2 152.5
1.5 Average river flow m3/s 2.84
1.6 Total storage capacity m3 14.46 million
1.7 Length of spillway on right bank m 195.33m
2. Urban Water supply system
3.1 Pumping station
a) Flow rate m3/s 1.21
b) Lifting capacity m 153.75
3.2 Water transmission pipeline Among other, 800m to share with irrigation system.
a) Length km 22.5
b) Diameter mm 1000
3.3 Annual water supply m3 31.90 million
3. Irrigation system
2.1 Service area hm2 204
2.2 Pumping station To share the same pumping house with urban WS system
a) Flow rate m3/s 0.18
b) Lifting capacity m 145.64
2.3 Main pipe km 3.9 (800m to share with irrigation system)
2.4 Haicaitang branch pipe km 0.545
2.5 Xiaba branch pipe km 0.550
2.6 Duimenpo branch pipe km 0.500
2.7 Annual irrigation supply m3 1.09 million
4. Power generation system Reconstruction of a flooded power station
4.1 Water intake Bank-tower type with bottom elevation of 1045.0m
4.2 Diversion tunnel Pressure tunnel
a) Length m 240.87 (133.65m of it to share with urban water supply system)
b) Diameter m 2.0
4.3 Installed capacity kW 800
4.4 Annual power generation MWh 2930
5. Spoil grounds
5.1 Hydraulic complex site
a) Total number No. 1
b) Total area hm2 5.43
c) Total capacity m3 200,000
5.2 Sites of WS pipelines Along WS pipelines
a) Total number No. 7
b) Total area hm2 3.14
c) Total capacity m3 150,000
6. Borrow area and quarry
6.1 Borrow area
a) Total number No. 1
b) Total area hm2 0.42
6.2 Quarries
a) Total number No. 2
b) Total area hm2 9.74
7. Permanent Land Acquisition hm2 183.41
4.1 Reservoir inundation hm2 123.40
4.2 Hydraulic complex hm2 34.95
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No Name of Component Unit Quantity
4.3 WS and irrigation system hm2 25.06
8. Resettlement
5.1 Population of production resettlement
persons 1078
5.2 Persons to be relocated persons 911
9. Total cost estimates CNY 607.63 million
10. Planned construction period month 31
III. DESCRIPTION OF THE ENVIRONMENT
A. Physical Environment
12. Location: The Hongyan Reservoir subproject is located on Maling River in Huaxi
District in the very south of Guiyang municipality (see Figure 1).
13. Topography and geology: Located in the watershed between two major river
system of China, namely, Yangtze River and Pearl River, the local topography is
characterized by mountainous and hilly highland. The land elevation varies from 1050
to 1380m above sea level. Located between Longli Composite Syncline and
Changshun Composite Anticline, the underlying geology of the area is fractured
mainly consisting of limestone and dolomite. The groundwater in the project area is
mainly fissure karst water in carbonate rocks which is mainly supplemented by
atmospheric precipitation. The distribution of local groundwater is very uneven, which
often supplements local rivers in the form of exposed Karstic springs. The
basic intensity of earthquake in project area is Grade VI, belonging to
weak earthquake region.
14. Hydrology: The Hongyan Reservoir subproject is located on Maling River which
belongs to Lian River catchment of the Pearl River system. The river originates from
local springs, and the spring water is clear with stable flow rate. Hongyan Reservoir
has a catchment area of 152.5km2. At the dam site, the average river flow is 2.84m3/s
and the mean annual runoff is 89.60 million m3. The historic data show that with
1-in-50 year storm (in 1999), the peak river flow was 404m3/s. The runoff of Maling
River comes from precipitation with great annual variation. Since there is no major
existing works (except one small hydropower station upstream (named Gelou, which
will be flooded by the subproject)) and hardly human activities affecting runoff regime
of the river, the local floods are characterized by high volume in a short duration,
mostly in June (49.2% in a year). The sand content of suspended load at the dam site
is 0.255kg/m3 and the annual sediment transport is 26,700t.
15. Climate: The project area is in the subtropical monsoon humid climate zone,
characterized by mild winters and summers, and abundant rainfall. The annual
average temperature is 14.9℃, with the extremely low temperature of -13.0℃ and
extreme high temperature of 34.7℃. Average annual precipitation is 1,131.1mm,
mainly in the period of July to December, accounting for about 77.6%. The annual
15
average relative moisture is 82% and average annual non-frozen time is 288 days.
The wind direction is primarily from the south, with an annual average wind speed of
2.3m/s.
B. Environmental Quality
16. Surface water quality: Water quality monitoring results obtained during Jun.
18-20, 2013 (when there was no rain for continuous 10 days in middle June 2013)
indicate that the water quality of Maling River could meet Class II of “Surface Water
Quality Standard” (GB3838-2002) except the indicator of TN (about 50% beyond
standard limit).
17. Groundwater quality: According to the results of measurements made during
Jun. 18-20, 2013, the groundwater quality in the project area is generally compliant
with Class III of “Groundwater Quality Standard” (GB/T14848-93) except the
indicators of NH3-N and fecal coliform, which might be related to the connection of
groundwater with surface water and consequent impacts from domestic wastewater
and non-point pollution.
18. Air quality: According to the results of measurements made during Jun. 11-17,
2013, the air quality monitoring results show that the air quality of project area
satisfied Grade II of “Environmental Air Quality Standard” (GB3095-2012).
19. Noise: According to the results of measurements made during Jun. 11-12, 2013,
the noise monitoring results show that the noise level of project area satisfied Class II
of “Acoustic Environmental Quality Standard” (GB3096-2008).
20. Pollution source: There is no existing industry and mine around the project site,
and according to the Overlaid Mineral Resource Assessment Report for the project,
there is no overlaid mineral resource in the project area. Due to limited farmland
resources, there is limited agricultural (non-point) pollution. However, there is
currently no existing wastewater treatment plant in Maling Township, and a small
quantity of dometic wastewater is discharged from the central area of Maling
Township into Maling River. Additionally, the tailing dump of Maling Township Coal
Mine that has been exhausted and legally shut down since 1995 is situated on the
river sides, which could affect water quality of Maling River in rainy season.
C. Ecological Environment
21. Located in subtropical zone on Qianzhong Plateau, the local soil mainly consists
of yellow soil, limestone soil and purple soil. The main types of vegetation in this area
include deciduous broad-leaved forests, coniferous forests, mixed
broadleaf-coniferous forests, shrubs and shrub-grassland. The main artificial
vegetation is the farmland planting paddy, cole and maize. The investigation shows
that except three ancient trees in the project area, including two Ginkgo biloba trees
16
(in Xinlou Village, about 500m from WS pipeline, Grade III under state protection) and
one Liquidambar formosana tree (in Geyue Village, flooded area, Grade III under
state protection), there is no other nationally key protected plant.
22. Because of the expansion of human activities over a long history, there are few
wild animals in the project area. Among 93 species of terrestrial vertebrates found in
the area, there are only 4 kinds of birds classified as Grade II under state protection
(glede, falco tinnunculus, accipiter virgatus and tyto capensis) in the assessed area;
however, due to wide distribution of similar vegetation in this region, limited
project-flooded area will not endanger their habitats, and these protected birds will
easily find new habitats around the proposed reservoir after its completion. According
to the investigation of aquatic ecosystem, there is no rare or endangered fish in the
area, and there is no migratory fish, either. There is no professional fisherman along
the river, and no centralized spawning, feeding and over-wintering ground for fish is
found in the area.
D. Socioeconomic Conditions
23. The subproject would affect Maling Township in Huaxi District of the Guiyang
municipality, which is mostly inhabited by ethnic minorities of Buyi and Miao. Major
social and economic conditions of Huaxi District and Maling Township are
summarized in the table below.
Table 2: Major Social and Economic Conditions of Huaxi Dis. and Maling
Township
Item Huaxi Dis. MalingTownship
Total area (km2) 891.56 81.08
Farmland (ha) 11849 643.8
No. of villages 167 8
Population About 330,000 8863
Dominant nationalities Han (65.62%) Buyi and Miao
Gross Domestic Product (GDP)
(million CNY)
9880 N/A
Major ethnic minorities Buyi, Miao, Hui, Yi Buyi and Miao
Schools 157 N/A
24. Relevant investigation conducted in June 2013 shows that there is no
underground cultural relic in the project area. There are two sites identified with
limited cultural value (Neither of these sites is protected by national or provincial
laws/regulations.) that will be flooded with reservoir impoundment, namely Geyue
Bridge (built in Qing Dynasty, current access to the village covered by the project RP,
only its foundation remains original) and Geyue Hydropower Station (a military
hydropower station, classified as Chinese revolutionary relics of 1960’s).
17
IV. ALTERNATIVES
A. Environmental Considerations
25. During project development, various alternatives were proposed and screened
against technical, economic, social, energy efficiency and environmental criteria. The
primary objective with respect to the environmental criteria was to identify and
recommend those alternatives with the least adverse environmental impacts and
maximum environmental benefits. The following key environmental factors were used
in comparing the alternatives: (i) amount of earthwork (related to vegetation
disturbance, soil erosion, etc.); (ii) land occupation, particularly occupation of basic
farmland and woodland in relation to habitat protection of protected species; (iii) water
pollution control; (iv) emission reduction; (v) ecological impacts; (vi) minimization of
community disturbance; and (vii) resettlement.
B. With or Without the Project
26. The project is planned in the southern region of Guiyang Municipality. The
planning of Huaxi College Cluster, Xiaomeng Industrial Park, Longdongbao New
Urban Area and Southern Ring Road Economic Zone in this region is expected to
increase the regional population to about 1.19million by 2020, which will inevitably
result in the dramatically increasing needs of urban water supply. Considering the
environmental and landscaping needs of Nanming River, the total water demand for
the southern region of Guiyang Municipality will reach 270 million m3/a; however,
relevant study2 shows that water supply capacity of existing water conservancy
projects will only be 150 million m3/a by 2020, and serious water shortage will be
expected, which will .
27. With the project operation, 31.90 million m3 of urban water supply to the southern
region of Guiyang Municipality and irrigation water supply to 204ha of farmland will be
ensured, which would significantly increase agricultural productivity and also promote
local economic development.
C. Alternative Sites for Dam
28. Two alternative dam sites 500m apart in the reach of Malin River have been
considered for the Hongyan Reservoir, the upstream site and the downstream site as
shown in Figure 3. Detailed comparison shows that the upstream dam site excels the
downstream option with shorter impervious curtain grouting needed, easier
construction conditions, smaller flooding area (by 374.22mu) and consequently lower
flooding investment (by 20.69million RMB) and less environmental impact; therefore,
the upstream site is selected.
2 Study on Water Supply Plan for the Southern Region of Guiyang Municipality (Water Source Part)
18
Figure 3: Optional Dam Sites Considered
D. Alternative Types for Dams
29. Two types of dams, gravity dam, and faced rockfill dam, were considered for the
project. The faced rockfill dam was finally selected taking account of geological
conditions, capital costs, technical requirements, and impacts on environment.
E. Alternative Normal Storage Level
30. Three normal storage levels, i.e., 1066m,1068m and 1070m, have been
considered in the project design with detailed comparison in terms of reservoir
inundation, project benefits, project cost and expected environmental impacts. As is
known, both the reservoir capacity and inundation loss will increase together with the
normal storage level. For this project, the increase of normal storage level from
1066m to 1070m will only lead to limited increase of affected population by 50
persons and inundated land area by 208.83mu without involving any ecologically
sensitive zone. There will be only about 21million RMB of additional project
investment resulting from increased inundation. On the other hand, according to the
project economic analysis, the increase of normal storage level from 1066m to 1070m,
the investment on unit water supply will decrease the unit investment of water supply
from 11.79RMB/m3 to 10.80RMB/m3 and the FIRR (financial internal rate of return)
for the investment difference between Level 1066m and Level 1068m and between
Level 1068m and Level 1070m will be respectively 8.30% and 8.22%, both above the
base financial rate of return (8%). All the analysis results show that the alternative of
normal storage level at 1070m is preferred to the other two options.
F. Alternative Spoil Site
31. Two spoil sites were proposed in the original design. However, during the
environmental impact assessment, it was found that No.2 spoil site proposed was
situated within the flooded reservoir area, and such arrangement will lead to
Upstream
Site
Downstream
Site
19
significant soil erosion in the area. According to further site investigation and feasibility
study, the proposed No.1 spoil site has good geological conditions, acceptable
environmental and social impacts, and sufficient capacity for expected spoil from
project construction. Therefore, No.2 spoil site has been cancelled in current project
design.
V. ANTICIPATED ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES
A. Incremental Environmental and Social Benefits
32. The subproject will annually provide 31.90 million m3 of urban water supply to the
southern region of Guiyang Municipality and irrigation water supply to 204ha of
farmland will be ensured with the project implementation, which would significantly
increase agricultural productivity and also promote local economic development.
33. The subproject will result in direct creation of 580 full-time jobs over the 31
months construction period and some 21 permanent jobs for operating the new
subproject facilities. Most of the job opportunities will be given to local villagers, which
will increase income of local villagers and help poverty reduction in the villages. The
large quantities of construction materials and equipment needed during construction
will be mainly purchased locally, which will promote the development of local
industries and local economy.
34. In addition, the subproject will rehabilitate and build permanent access roads
which will improve transportation conditions in the subproject area and benefit nearby
villagers.
B. Design Considerations
35. The following considerations have been and will continue to be incorporated in
the preparation of EIA, feasibility study and preliminary design:
(i) All the project design is consistent with national industrial policies and water
development policies.
(ii) All the project design is consistent with all relevant national and local planning on
economic and social development, water conservancy construction,
environmental protection, ecological protection and land use.
(iii) All the project sites are carefully selected to avoid or minimize potential adverse
impacts on the environment and surrounding communities. The project will not
affect any important historical and cultural site. The project sites are not located in
any forests and grasslands of ecological significance, natural reserve or scenic
areas.
(iv) All facilities are located and designed to minimize resettlement impacts.
(v) The technical design and scheduling of construction activities for the components
will ensure compliance with government regulations and international best
practices with respect to safety, sanitation, and environmental protection.
20
(vi) The project has undergone the EIA process under the laws and regulations of the
PRC. The EIA documents were prepared by a qualified EIA institute, reviewed by
expert panels and approved by the municipal EPB3.
(vii) Appropriate environmental mitigation and monitoring measures are included in
the EMP. The proposed environmental mitigation measures will form part of the
design documents for the components, and be included in the contracts for
procurement of goods and services. All contractors and subcontractors will be
required to comply with the EMP.
(viii) The environmental monitoring plan has also been incorporated into the overall
project design to ensure that environmental impacts are closely monitored and
the construction and operating activities are closely supervised against the
approved EMP.
C. Identification of Adverse Environmental Impacts
36. Potential adverse environmental impacts of the subproject were firstly identified
for both subproject construction and operation periods and the identified
environmental impacts or issues were then classified based on the subproject nature
and the actual environmental conditions in the subproject area. The analysis shows
that there is no sensitive environmental issue with the project implementation, and the
other identified environmental impacts related to the project are shown in the table
below.
Table 3: Identification of Potential Environmental Impacts
No. Impacts Environmental Issues
1 Sensitive None.
2 Important 1) Impacts during construction, 2) land use and resettlement, 3) reservoir water quality, 4) downstream water use, 5) ecology, and 6) impacts of returned water on receiving water quality
3 General i) Public health, ii) soil erosion, iii) cumulative impacts, and iv) dam safety
D. Anticipated Adverse Impacts during Construction and Mitigation Measures
1. General Environmental Impacts during Construction and Mitigation Measures
37. Potential environmental impacts generally expected during the project
construction and corresponding mitigation measures proposed in the EIA are
summarized in the table below:
3 Approval of the domestic EIA for this project has been delegated to the Guiyang municipal EPB by Guizhou Provincial Environmental Protection Department.
21
Table 4: General Environmental Impacts during Construction and Mitigation
Measures
No. Issues General Environmental Impacts during
Construction
Mitigation Measures proposed in the
EIA
1 Airborne dust
Airborne dust will be caused by excavation, blasting, demolition, vehicle movement and material handling, particularly downwind from the construction sites; however, relevant project sites are relatively far away from surrounding residential areas with short construction duration; according to the analysis, the adverse impacts resulting from limited generation of airborne pollutants will be limited to the construction sites only. Concerning airborne dust and emission from vehicles and construction machinery during material transportation, expected impacts are mainly related to the worker camp and five households of Hongyan Village situated along the road.
- Adopt low-dust construction technology, e.g., to apply wet operation for chiseling and drilling and to prioritize the application of pre-splitting blasting, smooth blasting, buffer blasting and deep-hole short-delay tight-face blasting for blasting operation;
- Construction sites, transportation routes and materials handling sites will be water-sprayed on dry and windy days; especially if these sites are near sensitive receptors, such as residential areas;
- Vehicles and construction machinery will be required to be properly maintained and to comply with relevant emission standards (GB18352.3-2005, GB18352.5-2013, GB14622-2007 and GB17691-2005);
- Materials will be covered during transportation to avoid spillage.
2 Noise
Noise from excavation, drilling, blasting, aggregate processing, concrete batching, and construction equipment will potentially affect nearby village residents. However, the quantitative analysis shows that such expected noise impacts are considered acceptable as applicable national standard. Heavy duty trucks will use village roads which will bring significantly increased traffic noise to nearby worker camp and local residents (five households involved).
- Set up 5 warning signs along main transportation routes to limit vehicle speed and prohibit honking;
- Noisy machines will be properly maintained with the adoption of necessary noise reduction technology, e.g., mobile sound barrier;
- Nighttime use of noisy machines, such as pile-drivers and concrete vibrators, will be prohibited;
- Construction activities, in particular, blasting, will be scheduled carefully (avoid the hours between 22:00 and 06:00) to minimize noise impacts from construction machinery.
22
No. Issues General Environmental Impacts during
Construction
Mitigation Measures proposed in the
EIA
3
Waste discharge from construction camps
Waste discharge from construction camps, such as wastewater, municipal solid waste and waste oils, etc. from construction camps of some 580 workers (at peak time) could create potential new pollution sources in the areas.
- Domestic wastewater from construction camps will be collected and treated by compact wastewater treatment facilities/septic tanks depending on generation rate. No wastewater is allowed to be discharged without treatment;
- Domestic solid waste (about 0.522t/d) will be collected and sent to nearby transfer station of Huaxi Dis. by local environmental sanitation Dept.
4
Construction wastewater
Construction wastewater will be generated, in particular, from foundation pit, aggregate processing, concrete batching and garage, which will increase the pollution load of Maling River during construction.
- Wastewater from foundation pit will be settled and then reused for concrete curing;
- Wastewater from aggregate processing and concrete batching will be treated by flocculating settlement process before being reused;
- Oily wastewater from garage will be treated by oil separation and settling with dosing of flocculant before being reused;
- No wastewater is allowed to be discharged without treatment to avoid contamination of surrounding areas.
23
No. Issues General Environmental Impacts during
Construction
Mitigation Measures proposed in the
EIA
5 Ecological impacts
Land occupation, construction activities and increased human activities around project sites will bring damage to local vegetation and consequently lead to the migration of local terrestrial wildlife, including four kinds of wildlife under state Class 2 protection in the project-affected area as identified in EIA survey (all are birds). Since the project-affected area is not their main habitat, with the implementation of re-vegetation work planned under the project, the expected impacts will be limited and temporary. One ancient tree (Liquidambar formosana, nationally Grade III) will be flooded with reservoir impoundment. Expected impacts on aquatic ecosystem, in particular, local fishes, will mainly result from blasting, excavation of dam foundation, cofferdam for river closure and accidental discharge of untreated construction wastewater, limited to construction phase.
- Strengthen the education of workers and nearby residents to minimize vegetation damage and impacts on local wildlife;
- Temporary land occupation will be planned well ahead of the construction to minimize disturbance. Land will be reinstated to its original condition upon completion of construction;
- Top soil will be reserved at the borrow pit sites, which will be used for rehabilitation and reclamation of the sites upon project completion;
- Re-vegetation measures have been included in the project soil conservation plan for all the sites;
- The ancient tree will be replanted by local forestry authorities who has sufficient competence and experience for such tree species based on a carefully replantation plant to be developed and approved during project implementation;
- During dam construction, measures like net across river, sound and pulse current will be adopted to drive fishes away from the construction sites; no solid waste is allowed to be dumped into the river and all the wastewater is required to be treated before discharge into the river.
6 Construction spoil
The estimated earthwork volume from project excavation will be about 986,300 m3, of which 648,800m3 will be used for backfilling and 337,600m3 will be construction spoil. Limited spoil from the construction of WS pipelines is about 74,000m3.
- A spoil disposal site with a total area of 5.43ha has been selected about 3.2km downstream of the dam. Currently the land use of the site is wasteland and acquisition of the land has been included in the project design and overall project RP.
- Construction waste will be promptly removed from the sites. Burning of construction waste will be prohibited.
- Spoil from construction of WS pipelines will be temporarily stored at 7 selected small sites along the pipeline route for later backfilling or being used as soil cover.
- All spoil disposal sites will be landscaped at the end of the disposal operation.
24
No. Issues General Environmental Impacts during
Construction
Mitigation Measures proposed in the
EIA
7
Quarries and borrow pit
The project plans two quarries (respectively 3.00ha and 6.74ha) and one borrow pit (0.42ha) near the dam site to meet the project needs, which will increase local soil erosion and vegetation damage.
- Materials will be stored in appropriate places and covered or sprayed to minimize dust generation.
- Top soil will be collected and reserved at the borrow pit site. The soil will be used for reclamation of the sites as soon as the quarrying and borrowing operations are completed.
8 Access roads
The project needs to build temporary access roads to provide access to the site for construction vehicles. The construction of these roads will increase local soil erosion as well as damage to local vegetation.
- Temporary land occupation will be planned well ahead of the construction to minimize the disturbance. Land will be reinstated to its original condition on completion of construction.
9
Community Hygiene and Epidemics Control
The construction will gather some 580 workers at the construction sites at peak time. This mobile population for about 2.5 years could be a source of epidemics including AIDS, affecting not only the workforce itself but also the local communities.
- Contractors will be required to take necessary safety measures at the construction sites to protect the public and their workers, and warning signs will be provided to alert the public of potential safety hazards at and around the construction sites.
38. In order to effectively implement these measures, the “Environmental
Management Rules for GIWRMP Construction (Rules)” prepared by Guiyang PMO
during the preparation of GIWRMP in 2009 and made effective since February 1,
2010 is also applicable to all the subprojects of the GIWRMP including the Hongyan
reservoir subproject. The Rules is attached as Annex 1 of the Attachment 1:
Environmental Management Plan.
39. The Rules summarizes all the mitigation measures, included in subproject
EIAs/IEEs, to be implemented by subproject construction contractors, responsibilities
of all parties involved in subproject construction, as well as supervision and
enforcement procedures of the implementation of the measures. The Rules will be
included, as an integrated component of bidding documents, in all the construction
contracts for Hongyan project.
40. An environmental supervision mechanism will be established during
implementation of the GIWRMP including construction of the Hongyan Reservoir
subproject. A supervision group consisting of environmental supervision engineers
(ESE) will be engaged by subproject IAs to monitor and supervise continuously on
spot the environmental performance of construction activities including dust and noise
control, construction wastes disposal, soil erosion control, replanting of trees, working
safety, sanitation and health care of workers. The implementation of environmental
management measures and their effects will be regularly reported to the
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implementation agency (normally on a monthly basis as part of monthly construction
supervision reports) in order to keep track of environmental performance during
project implementation. To reduce the risk of the spreads of epidemic diseases, all
construction workers will be provided with training and education programs to
increase epidemic diseases awareness and knowledge about disease infection and
prevention. The hygiene and sanitation, as well as healthy lifestyle among the
construction workers at the construction camps will be enhanced to minimize the
opportunities for epidemics breakouts.
41. The environmental supervision mechanism mentioned above has been proved to
be necessary and effective in several World Bank/ADB financed projects in China and
other ongoing subprojects under GIWRMP. It is believed that with the mechanism
implemented in Hongyan reservoir project, the environmental impacts of Hongyan
Reservoir during construction would be effectively controlled to minimum and/or
acceptable levels.
2. Impacts on Hydrological Regime during Construction and Mitigation
Measures
42. According to the proposed construction schedule, river closure is planned in early
November after starting construction. During construction, river flow will be
discharged through diversion tunnel and the designed minimum discharge flow will be
maintained. With the supplement of downstream small streams (Sire and Daya), the
river closure for project construction will have no significant impact on hydrological
regime of the lower reach.
3. Impacts of Land Use and Resettlement and Mitigation Measures
43. The subproject will lead to the permanent land acquisition of approximate
183.41ha (2751.22mu) because of reservoir inundation and subproject construction,
which will irreversibly change the land use in the affected area. The following table
shows the types of the land to be acquired.
Table 5: Land Acquisition of Hongyan Reservoir subproject (unit: ha)
Paddy
Field
Dry
farmland
Orchard
plot
Fores
tland
Grassl
and
Industri
al site
Land for
Military
Facilities
Water
Surface
Other
land
Total
Reservoir
Inundation 38.65 34.68 0.53 23.02 0 0.08 3.32 12.83 1.56 123.40
Hydraulic
Complex 2.54 12.86 1.13 15.87 0.13 0 0 1.38 0 34.95
WS and
Irrigation
works
10.88 12.87 0.55 0.76 0 0 0 0 0 25.06
Total 52.07 60.41 2.20 39.65 0.13 0.08 3.32 14.21 1.56 183.41
26
44. The table shows that major impacts on land use would be the reduction of
farmland (including paddy fields and dry land) and forestland. The other land
acquisition for the project will have very limited adverse impacts on agricultural
production and land use in the project area. It is also seen from the table that majority
of farmland acquisition is due to reservoir inundation.
45. Eleven villages of three towns/townships will be affected by farmland loss due to
the project land acquisition, in particular, Geyue Village and Maling Village. However,
in general, the 112.48ha (1687.18mu) farmland to be acquired for the project only
accounts for about 1.7% of the total farmland of the affected villages, and the annual
grain loss is expected as 64785.43kg, accounting for 0.30% of the total grain output in
the affected areas. The estimated per capita grain loss is only about 11.3kg. In
general, the project impacts on local agricultural production are not significant.
46. The project will lead to the relocation of 911 persons and production resettlement
of 1078 persons due to land requisition. Farmland available in the affected villages will
be readjusted to ensure all the villagers who lost their farmland could be re-allocated
with enough farmland for their livelihood (0.9~1.6mu, equivalent to the figure before
land acquisition). Taking the examples of the two villages suffering most from
farmland loss, the annual plantation loss of Geyue Village will be 206,901.5RMB and
the per capita income reduction of affected villagers will be only 42.39RMB. For
Maling Village, the annual plantation loss will be 38,564.5RMB, and the per capita
income reduction of affected villagers will be only 32.49RMB. With those measures
implemented, the anticipated impacts on land use in the affected villages will be at
acceptable levels.
47. A Resettlement Plan has been prepared by Guiyang Engineering Corporation in
accordance with ADB requirements and Chinese regulations, which includes land
compensation, land relocation, production arrangements, grievance mechanism, as
well as external monitoring and evaluation. The implementation of the plan would
ensure that the affected people will be well compensated and quickly reach or exceed
their current living standard. In addition, the plan would also ensure that those
affected people share benefits from project implementaiton. The RP is to be reviewed
and approved by ADB before subproject implementation. See the “Resettlement Plan
for Hongyan Reservoir Subproject” for detailed information.
4. Impacts on Cultural Relics and Mitigation Measures
48. As mentioned before, there are two sites identified with very limited cultural value
that will be flooded with reservoir impoundment, namely Geyue Bridge (built in Qing
Dynasty, current access to the village covered by the project RP, only its foundation
remains original) and Geyue Hydropower Station (a military hydropower station,
classified as Chinese revolutionary relics of 1960’s). As per the protection plan of
cultural relics proposed in the “Investigation and Survey Report of Cultral Relics within
27
Land Use Scope of Guiyang Hongyan Reservoir Project” and the “Official Letter on
the Protection of Cultural Relics within the Land Use Scope of Guiyang Hongyan
Reservoir Project” (QianWenWuHan[2013] No.25), since both sites have been
identified with limited cultural value, both sites will not be rebuilt after being flooded.
As the mitigation measures, it is only required to implement the collection of basic
information and architectural surveying (e.g., name, age, location, maintenance status,
spatial size and status quo pictures) before reservoir impoundment., and the owner
will be compensated as part of resettlement plan. (It is estimated that a total of
11.15million RMB will cover the compensation cost for both sites.)
49. Archaeological or other cultural properties may be found during construction.
Construction will be immediately suspended if any archaeological or other cultural
properties are found. Relevant cultural authority, as well as the project management
office (PMO), will be notified promptly, and only after a thorough investigation will
construction resume.
E. Anticipated Adverse Impacts during Operation and Mitigation Measures
1. Impacts on Hydrological Regime during Reservoir Impoundment and
Mitigation Measures
50. According to the proposed construction schedule, the reservoir impoundment will
take 32 days to reach dead storage level and 120 days to reach normal storage level.
The impoundment process will change the hydrological regime of reservoir area and
downstream reach by raising the reservoir level and slowing down the flow rate. Due
to the barrier of proposed dam, the downstream flow rate will become homogenous
during impoundment. However, with the maintenance of minimum discharge level at
0.284m3/s and the supplement of downstream tributaries, the lower reach will not be
cut off and the minimum ecological and water use demand could be met; therefore, no
significant environmental impact is expected during reservoir impoundment.
2. Impacts on Hydrological Regime during Operation and Mitigation Measures
51. As presented in the EIA report, the reservoir will be operated between the dead
water level of 1049m and the normal storage level of 1070m to form a fluctuation zone
of 0-21m in the reservoir area. At the normal storage level, the total flooded area is
0.978km2 with corresponding increase of water depth. With reservoir operation, the
flow rate will significantly decrease in the reservoir area to slow flow and still water,
and sand-carrying capacity will reduce accordingly. However, such impacts will be
limited to the section between reservoir tail and the dam.
52. Maling River is a typical mountainous river supplemented by rainfall, in particular
during May ~ October. For the river section downstream of Hongyan dam, the runoff
in a year will be more even with the annual regulation of Hongyan Reservoir, and the
28
runoff in flood season will reduce. Considering the discharge of minimum
environmental flow (0.284m3/s), the minimum water level in flood season and dry
season will remain unchanged, and there will be no significant impact on the minimum
water depth.
3. Impacts of Siltation
53. Considering short duration of construction and impoundment phases, the major
impacts of siltation is expected only during reservoir operation. Without any reservoir
upstream, the expected sediment transport rate at the dam site of proposed Hongyan
Reservoir will be about 26700t/y, which means after 50 years’ operation, the sediment
at the dam site will be 935,000m3, equivalent to the siltation level of 1036.23m, still
below the dead water level. Therefore, within the service life of Hongyan Reservoir,
the impacts of siltation on the project will not be significant.
4. Impacts on Reservoir Water Quality during Impoundment and Mitigation
Measures
54. The reservoir impoundment will flood existing farmland, forestland, toilets,
livestock pens and so on, during which process organic matter, applied chemical
fertilizer pesticide will be released in water; therefore, the contents of N and P may
increase in the reservoir and affect the reservoir water quality. A detailed reservoir
clearing plan has been developed as part of the project RP to properly remove
buildings, structure, trees and solid waste within the reservoir area and implement
sanitary clearance under the guidance of local health and epidemic prevention
department.
55. The investigation shows that there is an abandoned Maling Township coal mine
in the upstream catchment of proposed Hongyan Reservoir, which was closed in 1995
but still with some mineral slags piling along Maling River. To avoid possible clogging
and pollution of the river in rainy season, the slags will be removed before reservoir
impoundment.
56. All the solid waste generated from reservoir clearing will be disposed at the
disposal site compliant with applicable national standards, and all the temporary
storage sites for solid waste shall be outside the inundated area in order to prevent
any further pollution. The selection of solid waste disposal sites will comply with
applicable environmental protection requirements.
5. Impacts on Downstream Water Use during Operation
57. Maling River is a first tributary of Lian River. With water storage in Hongyan
reservoir, the project may have potential adverse impacts on the existing downstream
water use. Relevant investigation has been carried out during EIA preparation, and
the results are as follows.
29
Table 6: Investigation Results of Downstream Water Use
No. Type of Water
Use Results
1 Domestic WS No intake for domestic water supply with the presence of many springs in the area.
2 Irrigation and fish-farming
The water intake 500m downstream of proposed Hongyan dam serves a nearby fish farm for water renewing with the demand of 5000m
3/y and 500mu farmland downstream for irrigation with annual
water demand of 454,000m3/y, i.e., 0.016m
3/s in total.
3 Industry No industrial water intake
4 Pollution dilution
No dilution water demand
5 Scenery water
demand No scenery water demand
6 Navigation No water demand for navigation for Maling River.
7 Ecology No special ecological requirements. A least river flow is needed to maintain basic river conditions for the living of common fishes.
58. As shown in the table, the current water uses of Maling River downstream the
Hongyan Reservoir include: i) irrigation of 500mu farmland; ii) a fish farm; and iii)
ecological water demand.
59. The proposed project is designed to provide irrigation water supply to 204ha of
farmland, which would significantly increase local agricultural productivity.
60. A minimum ecological flow of 0.284m3/s (10% of annual average flow for Maling
River at the proposed dam site) has been defined for Hongyan reservoir project,
which will maintain the basic river conditions in the reach. In addition, there are 2
small streams (Sire and Daya) that enter Maling River with a total flow of some 0.50
m3/s (dry season flow), which will help to maintain stable ecological conditions in the
river reach.
61. It can be concluded that the project will have very limited adverse impacts on
current downstream water users.
6. Impacts on Reservoir Water Quality during Operation and Mitigation
Measures
62. One of the key objectives of the project is to provide 31.90 million m3 of domestic
water supply to the southern region of Guiyang Municipality. An important
environmental issue of the project is to maintain good water quality in Hongyan
Reservoir. As described in Chapter III: Description of the Environment, current water
30
quality of Maling River is good, compliant with Class II of national surface water
quality standard, which could be utilized as drinking water source.
63. Non-point pollution sources for proposed Hongyan reservoir mainly come for soil
erosion in Maling River Basin. Eutrophication analysis conducted during EIA study
concludes that the reservoir is predicted to stay at the mesotrophication level, and no
eutrophication is expected.
64. The investigation shows that there is no industrial pollution source in the
catchment of Hongyan Reservoir, and the domestic wastewater from residents living
upstream along the river is collected separately for agricultural fertilization.
Concerning the closed coal mine of Maling Township located in the upstream
watershed, mine water inflow from the pit will be 0.02m3/s by average with main
pollutants of SS, Fe and Mn. The analysis shows that even in the driest month (March,
0.78m3/s), the wastewater from the ore pit will not have significant impact on local
surface water quality; however, since no wastewater discharge is not allowed for
Class II surface water as per “Surface Water Environmental Quality Standard”
(GB3838-2002), after being classified as part of planned drinking water source
protection zonethe wastewater from ore pit will treated and reused without discharge
into Maling River under the administration of future dedicated drinking water source
protection zone management committee.
65. The domestic wastewater generation of 21 operators will be limited to 2.52m3/d,
which will be treated by land treatment process and then reused for site greening and
water sprinkling.
66. It is concluded in the domestic EIA report that local surface water quality will
generally remain at the same level after reservoir operation. Additionally, the following
mitigation measures are to be taken:
a) A drinking water source protection zone is to be defined in the watershed to
protect the water source by local authorities and the defined area needs to be
approved by Guizhou provincial government before project operation. As per
applicable technical guidelines in China, the zoning for the protection of
drinking water source has been proposed by EIA consultant for Hongyan
Reservoir, as shown in the following figure. According to pertinent Chinese
regulations, for drinking water source protection zone, significant pollution
sources should be eliminated and no new significant pollution source will be
allowed. The protection zone will be officially established upon the
completion and operation of Hongyan Reservoir. For daily environmental
management and monitoring of the drinking water source protection zone, a
dedicated management committee will be established under the
administration of local environmental protection bureau and with the support
of other relevant authorities including district government, water resource
31
bureau, planning bureau, land resource bureau, construction department,
water authority, health bureau and so on.
b) A thorough reservoir clearing plan is to be carried out by Huaxi PMO and
local government before reservoir impoundment, following the requirements
and procedures of the “Reservoir Clearing Criterions” (MWR, DJ/T5064-1996)
to remove pollutants and pollution sources, including clearing of potential
pollution materials and disinfection of toilets, livestock pens, solid waste site,
and clinics etc.
c) A green agricultural production has been strongly advocated in the project
area by the local government, where minimum low toxic and low residual
fertilizers and pesticides are applied in farmland as well as application of
Integrated Pest Management (IPM). This will reduce the risk of surface runoff
contamination and impacts to the reservoir water quality.
d) Water quality monitoring and water pollution source investigation is to be
carried out periodically during reservoir operation.
32
Figure 4: Proposed Drinking Water Source Protection Zoning for Hongyan Reservoir
Grade I
Protection Zone
Grade II
Protection Zone
Quasi-Protection
Zone
33
7. Impacts on Downstream Receiving River Water Quality
67. According to the investigation, in the river reach of 20.9km from dam site to the confluence of Maling River and Lian River, there is no existence of industrial water pollution sources, and domestic wastewater is mostly collected by local residents for fertilization. No increase of water pollutants is expected in the water reduced river reach with project operation; therefore, considering the maintenance of minimum flow as designed and the afflux of downstream tributaries, the project will not lead to significant impact on water quality of downstream river reach. 68. Another potential significant environmental issue for a water supply reservoir subproject is the impact of the “returned” water from water users, including agricultural runoff and domestic sewage, on the receiving water of downstream river reach. 69. The proposed Hongyan project will supply the southern urban area of Guiyang Municipality and the rural area around Maling Township for domestic water use and 204ha farmland from Hongyan Village to Maling Township for irrigation. The reach of Maling River downstream of proposed dam will receive the generated returned water, mainly including about 490,500m3/a returned water from farmland irrigation and domestic wastewater generated from urban and rural domestic water supply. 70. The returned water with different pollutants would have adverse impacts on the receiving water, Maling River and then the Lian River (Maling River is a tributary of the Lian River) if no mitigation measure was taken. The following mitigation measures are to be taken: a) Returned water from farmland irrigation: About 490,500m3 water was estimated to
be returned annually from irrigated farmland to Maling River and then Lian River. Green agricultural production has been strongly promoted in the project area by the local government, where minimum low toxic and low residual fertilizers and pesticides are applied in farmland as well as application of Integrated Pest Management (IPM). It will significantly reduce the use of pesticide and fertilizer and consequently reduce the risk of surface runoff contamination and impacts to the receiving water quality.
b) Returned water from urban water supply: Since the proposed Hongyan reservoir project is expected to be completed in July 2016, the domestic wastewater generated due to urban water supply with the operation of Hongyan reservoir will be treated by the WWTP4 in the south of Huaxi District without any discharge into Maling River then.
c) Returned water from rural water supply: Domestic wastewater generated by rural users within the service area of Hongyan Reservoir will be treated by septic tanks and then reused as fertilizer. Very limited amount of the forecasted returned water would enter Maling River with limited impacts on the river water quality. The EIA consultants also suggest to promote water-saving facilities and measures within its rural service area to reduce the wastewater generation in rural areas.
71. With above mitigation measures implemented, the adverse impacts of the returned water due to the water supply from the project would be controlled at acceptable levels.
4 According to the updated information, the WWTP in the south of Huaxi District has been completed and put into
commissioning in Dec. 2014 with short-term treatment capacity of 30,000m3/day and long-term treatment capacity
of 60,000m3/day.
34
72. However, regular water quality monitoring will be carried out in selected river sections in the Maling River and the Lian River and annual investigation and evaluation of the impacts on the Maling River and the Lian River water quality will be conducted, see the Environmental Monitoring section. Additional mitigation measures may be proposed if environmental monitoring results indicate that they are necessary. 8. Impacts on Ground Water Level and Quality 73. The EIA study shows that Maling River is the lowest discharge point for groundwater in the region, and the project operation will not change the recharge and discharge regime between groundwater and surface water there. With good geologic conditions around reservoir area of the project, there is no concern of permanent leakage for Hongyan reservoir during operation, and the groundwater volume will not change in the area. Only that limestone and sandshale are distributed on both banks in the reservoir head area with high water permeability at their interface; therefore, curtain grouting treatment will be implemented there to minimize the leakage possibility. 74. During project operation, the rise of groundwater level may lead to the supplement of groundwater partly by surface water; however, since the water quality of Hongyan reservoir is now Class II according to GB3838-2002, the groundwater quality will not be affected. With the implementation of control measures over non-point pollution sources (mainly from irrigation), there will be no significant impact on local groundwater quality. 9. Impacts of Solid Waste and Mitigation Measures 75. During project operation, about 21 operators will generate the domestic solid waste at the rate of 18.9kg/d, which will be collected with the collection tank used during construction, regularly sent to the domestic solid waste transfer station of Huaxi District and treated together with the other domestic solid waste of Huaxi District. 10. Ecology
76. The EIA Report for Hongyan Reservoir project confirmed that there is no protected area (national parks, nature reserve, wetland, etc.) in the project-affected area. Wildlife is rarely seen due to long term settlement and human activities in the area. According to the EIA investigation, there are four kinds of Grade II nationally protected birds and 22 kinds of provincially protected wildlife in the affected area. 77. The Hongyan Reservoir would have an inundation area of some 119.01ha, which would have some adverse impacts on local ecological system. However, the investigation shows that expected impacts will be limited with resulted plant loss only accounting for 6.89% of the total biomass in the assessed area, which is considered affordable for the local ecosystem. The animals currently living in the reservoir area could easily move to and live in surrounding areas. Concerning the identified rare and protected wildlife in the project area, the limited project inundation will not have any significant impact on the affected species and their habitat. On the other hand, the consequently significant increase of water surface is favorable for the establishment of a reservoir-depending ecosystem, in particular, on the increase of vegetation coverage around the reservoir, the attraction for waterfowls and the development of amphibians including the protected frogs and snakes.
35
78. As mentioned above, the Maling River is a small mountainous river with little water left in dry season. As a result, no valuable aquatic resource exists in the river. With reservoir operation, the river will be changed into three parts with different hydraulic regime, namely the river sections upstream and downstream of Hongyan Reservoir with “more natural” river flow and the reservoir area featured by slow/still water and deep water inbetween. The reservoir operation will significantly increase the quantities and biomass of phytoplankton, zooplankton and zoobenthos, which are the feeds of local fishes; therefore, the fish production in the reservoir area is expected to increase accordingly. The reservoir operation will have some adverse impacts on local fishes preferring running water; however, with the maintenance of minimum environmental flow at 0.284m3/s and the joining of tributaries (Sire River and Daya River) downstream, no significant impact on these fishes is expected. 79. Environmental monitoring will be carried out on ecological impacts of the project during operation, as detailed in the environmental monitoring plan.
11. Environmental Impacts of Resettlement Activities
80. According to the project RAP (Oct. 2013 version), the implementation of Hongyan Reservoir will lead to slight reduction of per capita farmland resource (by only 0.38 mu per capita), the relocation of 911 villagers and the production resettlement of 1078 villagers from Maling Township. Therefore, the project impacts on local land resource is limited, and the expected impacts of resettlement activities during operation are mainly related to the proposed resettlement sites. Two centralized resettlement sites and scattered resettlement sites have been planned for the project resettlement. The expected impacts mainly include the generation of domestic wastewater and solid waste, impacts of daily human activities on local ecosystem, impacts on public health and social impacts. 81. Considering limited population for centralized resettlement and agricultural features of local socio-economic conditions, biogas tanks are recommended in the EIA report for the treatment of domestic wastewater from resettlement sites and also energy recovery from generated biogas. A 6m3 biogas tank is proposed for each household, relevant budget has been included in the RAP for their operation and maintenance. Also sufficient training will be provided to the villagers to ensure normal and safe operation of biogas tanks.
82. The centralized resettlement sites will be installed with dustbins and solid waste transfer station for the collection of domestic solid waste, which will then be regularly delivered to local environmental sanitation department for treatment. For the scattered resettlement sites in rural areas, the EIA report recommends to locally treat the limited quantity of generated domestic solid waste (mostly organic) with sorting and comprehensive application such as fermentation in biogas tanks or composting.
83. In the proposed EMP, special budget has been allocated to ecological protection to support the education of resettled villager on the protection of local wildlife.
84. Public health management system will be established and implemented in the resettlement sites with the strengthening of relevant organizational arrangements. Before moving into the new houses, the house will be thoroughly cleaned with filling-up of waterways and mosquito killing. Considering potential increase of mosquito and rat infestation with reservoir operation, the health management and anti-epidemic measures will be strengthened during project operation against increase potential for mosquito- and rat-borne diseases. Based on existing epidemic prevention surveillance and containment system implemented in the project area, the
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residents living around the reservoir will be organized for rat elimination twice a year to lower the rat density to harmless level. Easy and efficient bait broad casting method is proposed for rat elimination. Mosquito killing will be carried out in resettlement sites once a year in summer/autumn with frequent mosquito activities. For mosquito killing and rat elimination, less toxic pesticide/rodenticide will be carefully selected under the project and applied in a way that minimizes adverse effects on beneficial organisms, human beings and the biophysical environment. The storage and use of selected pesticide/rodenticide will be considered as hazardous waste covered by the Hazardous Materials & Waste Management Plan under the EMP. Health education and vaccination will be implemented by local public health department on resettled villagers. Physical examination will also be carried out on about 10% of resettled villagers to understand potential epidemic situation.
85. To avoid the second resettlement, all the resettlement sites have been planned out of proposed drinking water source protection zone. The project RAP has paid high attention to the livelihood restoration of affected farmers by developing local agriculture, forestry, stockbreeding and other sectors such as agricultural product processing and providing necessary technical training to local farmers to promote local economic development and to increase the income of project-affected villagers. In addition, great efforts will be made to keep local culture and traditions in order to ensure social stability after resettlement.
12. Cumulative Impacts 86. The Hongyan Reservoir is currently the only reservoir to be built on the Maling River and the reservoir is one of the reservoirs included in the GIWRMP. The cumulative impacts of the GIWRMP had been assessed in both Chinese EIA and English SEIA for the overall project in 2006 and 2008 respectively. No obvious adverse cumulative impact is expected due to the operation of Hongyan Reservoir.
VI. Environmental Risk Assessment
87. No toxic and hazardous materials will be involved in the construction of Hongyan Reservoir project; however, the following potential environmental risks have been identified during the project EIA study. A. Explosives and Oil
88. A small amount of explosives and oil will be locally purchased and used during project constructions but without explosives depot and oil depot on site, therefore, the safety during their transportation and use will be one of the key concerns in the environmental risk assessment. The following measures have been proposed to avoid any accident:
- Establish clear responsibility system by the IA, which should also cover relevant contractors and subcontractors to ensure the implementation of risk mitigation measure;
- Strengthen safety education among all the construction workers and persons in charge of transportation to ensure the practice fully compliant with relevant specification and operational procedures;
- The transportation of oil and explosives should be approved by local public security and environmental protection authorities in advance with the use of seepage and spillage prevention devices;
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- Airtight oil tank will be used for oil transportation, and the explosives and detonators should be transported separately. The storage should be done as per relevant specifications at designated locations;
- Necessary firefighting equipment should be prepared with regular replacement. B. Dam safety 89. The dam of Hongyan Reservoir is a reinforced concrete face rockfill dam with a height of 52.4m. The design flood probability for the project is P=2% with corresponding flow rate of 420m3/s; the check flood level is P=0.1% with corresponding flow rate of 820m3/s. That means the reservoir operation will be safe and reliable even in the case of one-in-1000-years flood. However, with bigger floods or under extreme conditions (such as earthquake, human damage, war, etc.), the accident of dam failure is still possible. Therefore, dam safety is still a critical issue for the project. 90. The ADB required in the RRP/IWRM in V (iv) that “within 3 months of the loan effectiveness date, GMG will appoint a dam safety panel of eminent national engineers, which will review the detailed design of proposed subprojects involving the construction of dams, oversee dam construction, and confirm to ADB that the design and construction of the dams meet international safety standards”. 91. In accordance with the requirements, a dam safety panel has been appointed by the Guiyang PMO for GIWRMP who will also assess dam safety related issues including design, operation, and maintenance of the dams included in the GIWRMP, including the dam of Hongyan Reservoir project. A dam safety plan will be prepared by the panel for each of the dams including the Hongyan dam. A dam safety report is to be prepared by the panel before project implementation and the report will be submitted to ADB by Guiyang PMO for review and approval.
C. Landslide of Spoil Sites
92. During project construction, there is possibility of landslide for the spoil sites endangering the personnel and property safety of downstream residents. In the project design, the engineering measures such as drainage system in and around the spoil sites and containments at the bottom of spoil dumps to maintain the dump stability. During the dumping process, rational procedure, scientific slope and proper vegetation measures will also be taken to minimize related risk. D. Risk Related to Water Supply Pipelines
93. There are totally 22.5km long pipelines for irrigation and domestic water supply under the project including some inverted siphons, and there are possibilities of pipe burst due to poor construction or pipeline quality, environmental changes and external impacts, and natural disasters such as earthquake. Pipe burst may flood nearby farmland, buildings, roads and communication facilities, pollute water supply quality and even cause casualties. 94. To minimize the above risks, the following measures have been proposed in the EIA report:
- The pipeline design and construction will be implemented by competent and qualified contractors with the selection of high quality pipe materials and strict construction supervision;
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- The pipeline management and maintenance will be ensured during project operation. Once any pipe burst accident is detected, repair will be arranged as soon as possible to reduce the loss and to ensure regional water supply.
E. Hazardous Waste
95. Used engine oil and waste capacitors will be generated during the maintenance of transformer and generator sets, which are classified as hazardous waste with potential environmental risks. To minimize the above risks, the following measures have been proposed in the EIA report:
- A 12m3 accident oil pool of reinforced concrete structure will be constructed with surface seepage prevention measures to prevent any discharge of used oil in an emergency;
- Used oil from transformer will be stored in 5m3 sealed steel cans at a designated room for temporary storage;
- Hazardous waste such as used engine oil and waste capacitors will be stored, treated and recycled by the manufacturers and qualified organizations;
- The IA should develop the hazardous waste treatment regulations, and sand and some fire-fighting equipment will be prepared against any emergency.
VII. ECONOMIC ASSESSMENT
96. With the project, a stable water supply of 31.90million m3/year to the south of Guiyang Municipality for domestic usage will be ensured, which will improve the life quality of the people living in the service area. At the same time, some 1.09 million m3 water is to be provided annually from the project for irrigation of 204ha farmland in Guiyang Municipality, which will increase the productivity of the farmland from current 100kg–350kg/mu to 200kg-700kg/mu (rape and rice). This would bring significant economic benefits to local farmers. 97. Economic analysis was carried out for the project and the economic internal rate of return (EIRR) for the Hongyan subproject is estimated to be 8.22%, which exceeds the economic opportunity cost of capital, assumed at 8%. 98. Both environmental benefits and costs were estimated on a without-and with-subproject basis appropriately apportioned on the basis of being tradable or non-tradable, and with appropriate adjustments to the non-incremental and incremental subproject benefits, as shown in the table below.
Table 7: Environmental Benefits and Cost
Item Annual Benefits (million
CNY) Environmental
cost (million CNY)
Direct irrigation 3.06
Direct domestic water supply 80.90
Power generation 0.58
Land requisition and resettlement ??
Environmental mitigation 17.89
Total 84.54 ??
99. The environmental benefits, totaling CNY 84.54 million, include direct benefits from irrigation, domestic water supply and power generation while major environmental cost, totaling CNY ??? million, include cost of land requisition and resettlement and costs of proposed environmental mitigation measures including mitigation measures during construction and environmental management and
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monitoring measures. In addition to the environmental benefits mentioned above, the project would have some other social benefits such as increase of local job opportunities (for about 580 persons), local market opportunities, silt trap benefits, and erosion control benefits, which are not calculated in monetary terms and therefore not included in the above table. 100. It should be noticed that the environmental cost mostly occurs during project construction, while the environmental benefits are mostly related to project operation, therefore the project is expected to substantially beneficial in the long term.
VIII. ENVIRONMENTAL MANAGEMENT PLAN
A. Environmental Management 101. An environmental management plan (EMP) has been prepared in the Chinese EIA report and an English summary of the EMP is attached as Appendix 1. The EMP covers all phases of the project from preparation and construction to commissioning and operation, and aims to monitor environmental impacts and implement mitigation measures. The EMP has been incorporated in the subproject design stage, and will be incorporated into the construction and operation management plans. 102. The EMP will ensure effective implementation of various identified mitigation measures. During project preparation and implementation, various organizations with different environmental management responsibilities, including Guiyang Municipal EPB, Guiyang PMO, Huaxi District PMO, design institutes, monitoring institutes, environmental management consultants, contractors and environmental supervision engineers (ESE), will be involved in implementation of the EMP. 103. Plans for public consultation during project preparation, construction and operation have been developed, which include public participation in: (i) monitoring of resulted impacts and implemented mitigation measures during construction and operation; (ii) evaluation of achieved environmental and economic benefits and resulted social impacts; and (iii) interviews of affected villagers after project completion. There will be several types of public consultation, including site visits, workshops, investigation of specific issues, interviews, and public hearings as presented in the EMP. 104. The project IA will ensure that the project progress and impacts are regularly monitored and reported in line with ADB requirements. The effectiveness of mitigation measures and monitoring plans will be evaluated through the feedback reporting system. The mitigation measures required by the EMP will be adjusted if necessary. 105. Costs of mitigation measures to be implemented by construction contractors will be included in the tender and contract documents and will be borne by contractors. Costs related to mitigation measures to be implemented by the Guiyang PMO and the Huaxi PMO will be borne by Guiyang PMO and Huaxi PMO respectively. Cost of environmental management consultants and of training will be borne by the subproject as a whole. Corresponding cost estimates are presented in the EMP. The total environmental costs are estimated as CNY17.89million, accounting for 2.94% of the total project, which will be included in overall project budget. B. Environmental Monitoring
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106. A detailed environmental monitoring plan is presented in the Chinese EIA report and summarized in the project EMP (see Appendix 1 for details). The environmental monitoring plan will evaluate: (i) extent and severity of resulted environmental impacts as compared to the predicted impacts, (ii) performance of the environmental protection measures and compliance with related rules and regulations, (iii) trends of impacts, and (iv) overall effectiveness of the project EMP. 107. A group of environmental supervision engineers (ESE) will be employed by the subproject IAs to supervise/monitor on spot the performance of construction contractors in the implementation of environmental mitigation measures under GIWRMP, including the contractors involved in construction of the Hongyan Reservoir project. 108. An external environmental monitor (EEM) has been engaged by the Guiyang PMO to monitor and evaluate the implementation of the EMPs under GIWRMP, effects of mitigation measures, actual impacts, and needed corrections and improvements. The EEM will cover all the subprojects of the GIWRMP including the Hongyan reservoir project. 109. During construction and operation, Huaxi PMO and Huaxi water resources bureau (WRB, the project IA) will be responsible for monitoring the performance of the facilities and the environmental impacts of the project by qualified environmental monitoring institute. The Huaxi PMO will make appropriate arrangements for environmental monitoring in consultation with Huaxi EPB. When any environmental complaint is received from the public, monitoring institute will immediately conduct additional inspections. 110. Besides compliance monitoring, detailed internal environmental monitoring plans for construction and operation phases with higher monitoring frequency have been included in the project EMP. These monitoring plans and corresponding budgets will be included in the construction contracts and operation programs, with mitigation measures monitored by the ESE and Guiyang PMO. At the beginning of project implementation, the Guiyang PMO, Huaxi PMO, and the project consultants will develop comprehensive project design and monitoring framework (PDMF) procedures under the general PDMF of GIWRMP to systematically generate data of the project and develop detailed environmental and related socio-economic indicators to be used to measure project impacts. 111. Environmental monitoring cost, CNY1.46million, has been included in the project EMP. During project implementation, the budget will be adjusted based on actual requirements. 112. Results from the detailed environmental monitoring (including compliance monitoring and internal monitoring) for both construction and operation phases will be submitted by the contractors and the Huaxi PMO to the Guiyang PMO on a monthly basis, and the Guiyang PMO will submit to ADB semi-annual environmental reports on EMP implementation including environmental monitoring results, implementation and effectiveness of mitigation measures, environmental compliance, training and capacity building progresses. The reports would cover all subprojects including the Limu Reservoir Subproject. The Guiyang PMO will also be responsible for implementation of the ADB’s comments including comments on improvement of environmental monitoring plan.
C. Institutional Strengthening
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113. An environmental and social safeguard division (ESSD) has been established in the Guiyang PMO to be responsible for the management and supervison of EMP implementation under GIWRMP, including the EMP for Hongyan Reservoir project. A dedicate environmental officer has been assigned to be specifically responsible for environmental management in the ESSD. 114. Similarly, an environmental and social safeguard group (ESSG) will be established in Huaxi PMO to be responsible for EMP implementation of the subprojects in Huaxi District including the EMP for Hongyan Reservoir project.
115. Local governments will ensure that Huaxi PMO will have financial and managerial autonomy to operate the subproject facilities. As both the Guiyang ESSD and the Huaxi ESSG have limited environmental management capacities, their capacities will be strengthened by environmental management training provided for the project as detailed in Appendix 1.
IX. PUBLIC CONSULTATION AND INFORMATION DISCLOSURE
A. Public Consultation during Project Preparation 116. Public consultation Public consultation has been conducted for the project in two rounds during the preparation of Chinese EIA report. The first round was conducted during March 28-30, 2013 and the second round was during Aug. 10-20, 2013. In the first round consultation, a total of 110 questionnaires were provided to project-related or project-affected organizations (10) and villagers (100), of which 108 questionnaires were collected. In the second round consultation, site visits and individual interviews were carried out by the EIA team and the people visited and interviewed, included local government officials, relevant experts and the affected people. From the results of the two rounds of public consultation, the major opinions and concerns can be summarized as follows:
Most people surveyed knew about the proposed project through the media, conferences, public meetings etc. and aware of the environmental assessment work and resettlement planning (82%);
Most people supported the project (88%) and expected social and economic developments and quality of life improvement from the project implementation (85%). Especially, in the second round consultation, some villagers consulted strongly support the project and hope the project to be implemented soon.
Most people surveyed were satisfied with the mitigation measures proposed to address the anticipated adverse environmental impacts;
The two key concerns of the public surveyed are related to resettlement policies applicable to the project and soil erosion during project construction.
117. The issues and concerns raised by the public have been appropriately addressed in the EIA and mitigation planning or conveyed to other project teams such as that for resettlement planning. Specific mitigation measures have been designed to avoid or minimize the adverse impacts of most concern to the public with specific proposals incorporated into the EMP, such as soil erosion control and resettlement. 118. Information Disclosure Two rounds of information disclosures were conducted in March 2013 and August 2013. Bulletins were posted in affected Maling Township and Geyue Village and also on the websites of Guiyang Survey and Design Research Institute under China Hydropower Consulting Group
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(http://www.ghidri.com.cn/site/news/201312/3496.htm and http://www.ghidri.com.cn/site/news/201312/3508.htm). The 1st round of information disclosure focuses on the information on the nature and objectives of the project, contact information of project IA and EIA team and EIA methodology; based on the findings for draft EIA report, the 2nd round of information disclosure provides more details on production information, environmental baseline, potential impacts during construction and operation and proposed mitigation measures. In addition, the summary of draft Chinese EIA report was made available on the website of Guiyang Survey and Design Research Institute during August 10-20, 2013 for public review. 119. Consultation after SEIA posted on ADB’s website This SEIA will also be posted on the ADB’s website after completion. Comments and suggestions will be gathered and incorporated into the final Chinese version EIA and the final English SEIA. B. Future Plans for Public consultation and information disclosure
120. A draft further consultation plan has been developed for the project. The plan includes public participation in: (i) monitoring impacts and mitigation measures during project construction and operation stages; (ii) evaluating environmental and economic benefits and social impacts; and (iii) interviewing the public after project completion. Several ways of public consultation, such as site visits, bulletins, investigation on specific issues, interviews, and public hearings will be adopted as indicated in the Appendix I.
IX. CONCLUSIONS
A. Project Summary
121. The proposed Hongyan reservoir project is one of the medium-sized reservoirs included in the water conservancy works construction, ecological construction and stony desertification treatment plan for Guizhou Province. The project is situated on the middle reach of Maling River (a tributary of Lian River), in Maling Township of Huaxi District. The project will annually provide 31.90million m3/a domestic water supply to the south of Guiyang Municipality (P=95%) and 1.09m3/a water supply to 204ha of farmland for irrigation (P=80%); the discharge of environmental flow will be maintained at 0.284m3/s; the surplus water release from the reservoir and the environmental flow will be used for power generation with the installed capacity of 800kW. 122. The reservoir catchment is 152.5km2 at the dam site. The normal storage level is 1070.0m, the dead storage level is 1049.0m, the backwater length is 5.78km, and the total reservoir capacity is 14.46million m3.
123. The project consists of water source works, water supply pipelines and irrigation system. The project implementation will lead to the permanent land acquisition of approximate 183.41ha (2751.22mu), the relocation of 911 persons and the production resettlement of 1078 persons. The total project cost is estimated at CNY 607.63million, in which the budget for environmental protection is CNY 17.89million, accounting for 2.94%. B. Potential Adverse Impacts and Mitigation Measures
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124. Potential adverse environmental impacts of the project were firstly anticipated for both construction and operation periods and the impacts or environmental issues were then identified as sensitive, important, and general based on the project nature and actual environmental conditions in the project area. 125. The important environmental impacts/issues have been identified as 1) Impacts during construction, 2) land use and resettlement, 3) reservoir water quality, 4) downstream water use, 5) ecology, and 6) impacts of returned water on receiving water quality; the general impacts include: i) Public health, ii) soil erosion, iii) cumulative impacts, and iv) dam safety.
126. Detailed environmental assessment has been conducted and corresponding mitigation measures have been developed for all the identified environmental impacts/issues, including air pollution control, wastewater treatment and solid waste management during project construction, protection of drinking water source during reservoir operation, maintenance of environmental flow, re-vegetatoin and soil erosion control plan, environmental protection of resettlement sites and development of environmental management plan including environmental monitoring program. The assessments have shown that the adverse impacts resulting from the project could be avoided or minimized to acceptable levels with appropriate mitigation measures as proposed in the EIA report and project EMP.
C. EMP Development and its Implementation 127. A specific EMP has been developed for the project for both construction and operation phases, which includes: i) institutional arrangements; ii) potential adverse impacts and mitigation measures; iii) environmental monitoring plan, iv) institutional strengthening and capacity building; v) public consultation plan; and vi) cost estimate. The EMP is to be implemented during project construction and operation. D. Public Consultation
128. Two rounds of public consultation and information disclosure have been implemented by the means of questionnaire, interviews, meeting and peer review in order to understand the public opinions on project construction, resettlement, reservoir operation and resulting project impacts. Majorities of the consulted people show their support to the implementation of Hongyan Reservoir project. E. Conclusions and Recommendations 129. Generally speaking, the implementation of proposed Hongyan reservoir project will bring significant environmental and social benefits with its functions of domestic and irrigation water supply. Limited adverse impacts will be anticipated mainly in relation to the quality of local aquatic environment and ecosystem due to project construction, reservoir inundation, project operation and resettlement. However, it is believed that with effective implementation of the project EMP, these adverse impacts could be avoided or controlled at acceptable levels. 130. To ensure the positive environmental benefits of the project, the following recommendations have been made in the EIA report that:
- During project construction and operation, local environmental protection authorities should strengthen the environmental supervision over the project to facilitate the implementation of mitigation measures and to ensure the environmental flow;
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- The supervision over the domestic wastewater discharge from Maling Township should be strengthened to avoid any wastewater discharge into Maling River and protect the water quality at drinking water source;
- The local government shall accelerate the construction of wastewater treatment project in the service area of this project to reduce the impacts of returned water on receiving water body.
131. As updated in one year after the finalization of Chinese EIA report, with the improvement and implementation of local environmental protection master plan, the latter two recommendations have already been implemented by local environmental protection authorities. Increasingly stricter enforcement of environmental laws and regulations in China in these years also provide strong support to the implementation of all the mitigation measures and recommendations proposed in the EIA report.
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Appendix 1
SUMMARY ENVIRONMENTAL IMPACT ASSESSMENT
Hongyan Reservoir Project
GUIYANG INTEGRATED WATER RESOURCE MANAGEMENT PROJECT
IN THE
PEOPLE’S REPUBLIC OF CHINA
Appendix 1
ENVIRONMENTAL MANAGEMENT PLAN
December 2013
i
TABLE OF CONTENTS
A. INTRODUCTION B. SUMMARY OF POTENTIAL IMPACTS AND MITIGATION MEASURES C. ENVIRONMENTAL MONITORING D. PUBLIC CONSULTATION
1. Public Consultation during Project Preparation 2. Future Public Consultation Plan
E. RESPONSIBILITIES AND AUTHORITIES 1. Environmental Responsibilities and Institutional Requirements 2. Institutional Strengthening and Training
F. REPORTING AND SUPERVISION G. WORK PLAN H. COST ESTIMATE I. MECHANISMS FOR FEEDBACK AND ADJUSTMENT Annexes Annex1 Environmental Management Rules for GIWRMP construction Figures Figure A1 Environmental Management System for Hongyan Reservoir project Figure A2 Mechanism for Feedback and Adjustment of EMP TABLES: Table A1 Summary of Potential Impacts and Mitigation Measures Table A2 Environmental Monitoring plan Table A3 Public Participation Plan Table A4 Environmental Responsibilities Table A5 Institutional Strengthening and Training Table A6 Environmental Cost Estimates
1
ENVIRONMENTAL MANAGEMENT PLAN A. INTRODUCTION 1. An Environmental Management Plan (EMP) has been prepared in the full length Chinese environmental impact assessment report (EIA) for the Hongyan Reservoir project. The EMP covers all phases of the project from preparation, construction, through commissioning and operation, and aims to ensure the monitoring of environmental impacts and the implementation of environmental mitigation measures as proposed in the EIA report. 2. The environmental mitigation measures developed in project EIA and included in the EMP will: (i) mitigate anticipated environmental impacts; (ii) ensure compliance with environmental laws and regulations; (iii) provide compensation for the anticipated loss of environmental resources; and (iv) ensure the realization of planned environmental benefits from the project. 3. Environmental monitoring plans included in the EMP will be carried out by qualified institutes and the results will be used to evaluate: (i) the extent and severity of actual environmental impacts against prediction; (ii) the performance of the environmental mitigation measures or compliance with applicable laws and regulations; (iii) trends of impacts; and (iv) overall effectiveness of the project EMP. B. SUMMARY OF POTENTIAL IMPACTS AND MITIGATION MEASURES 4. Potential impacts of the project during construction and operation, as identified by the EIA documents, as well as corresponding mitigation measures designed to mitigate and minimize the impacts are summarized in Table A1.
5. In order to ensure effective implementation of environmental mitigation measures
by contractors during the construction of GIWRMP subprojects, an “Environmental
Management Rules for GIWRMP Construction (Rules)” has been prepared by
Guiyang PMO, which had been made into effect on February 1, 2010. The Rules is
also applicable to the Hongyan reservoir subproject. The Rules is attached as Annex
1 of the EMP.
6. The Rules summarizes all the mitigation measures to be implemented by
construction contractors, responsibilities of all the parties involved in projects
construction, as well as supervision and enforcement procedures during the
implementation of these measures. The Rules will be included, as an integrated
component of bidding documents, in all the construction contracts for Hongyan
Reservoir project.
7. An environmental supervision mechanism has been established during the
implementation of GIWRMP, which will also been applicable to the construction of the
Hongyan Reservoir project. A supervision group consisting of environmental
supervision engineers (ESE) will be engaged by Guiyang PMO to monitor and
supervise continuously on spot the environmental performance of all the construction
contractors.
2
8. Other mitigation measures will be implemented by implementing agencies (IAs)
under supervision of the Guiyang PMO. The effectiveness of implemented measures
will be evaluated based on the results of environmental monitoring to determine
whether to continue or to make improvements. Improvement measures need to be
confirmed by the PMO through stipulated environmental management procedures.
9. A Resettlement Plan (RP) has been prepared for Hongyan Reservoir project to
ensure proper resettlement of the affected persons (APs) to avoid deterioration of
affected persons’ quality of life and any adverse social impacts. Details of required
actions are given in the project RP.
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Table A1: Summary of Potential Impacts and Mitigation Measures
Potential Impacts Mitigation Measures Responsible Agencies
Budget (CNY 10,000)
Remarks
A. Construction Phase
Wastewater
Construction wastewater will be generated, in particular, from foundation pit, aggregate processing, concrete batching and garage, which will increase the pollution load of Maling River during construction.
- Wastewater from foundation pit will be settled and then reused for concrete curing;
- Wastewater from aggregate processing and concrete batching will be treated by flocculating settlement process before being reused;
- Oily wastewater from garage will be treated by oil separation and settling with dosing of flocculant before being reused;
- No wastewater is allowed to be discharged without treatment to avoid contamination of surrounding areas.
Contractors 132.2 Construction budget
Wastewater generated by construction workers (580 persons at peak time)
Domestic wastewater from construction camps will be collected and treated by compact wastewater treatment facilities. No wastewater is allowed to be discharged without treatment;
Contractors 56.92 Construction budget
Air
Airborne dust will be caused by excavation, blasting, demolition, vehicle movement and material handling; however, relevant project sites are relatively far away from surrounding residential areas with short construction duration, limited generation of airborne pollutants will be affect the construction sites only. Concerning airborne dust and emission from vehicles and construction machinery during material transportation, expected impacts are mainly related to the worker camp and five households of Hongyan Village situated along the road.
- Adopt low-dust construction technology, e.g., to apply wet operation for chiseling and drilling and to prioritize the application of pre-splitting blasting, smooth blasting, buffer blasting and deep-hole short-delay tight-face blasting for blasting operation;
- Construction sites, transportation routes and materials handling sites will be water-sprayed on dry and windy days; especially if these sites are near sensitive receptors, such as residential areas;
- Vehicles and construction machinery will be required to be properly maintained and to comply with relevant emission standards;
- Materials will be covered during transportation to avoid spillage.
Contractors 101 Construction budget
4
Potential Impacts Mitigation Measures Responsible Agencies
Budget (CNY 10,000)
Remarks
Solid Waste
The estimated earthwork volume from project excavation will be about 986,300 m
3, of which
648,800m3 will be used for backfilling and
337,600m3 will be construction spoil. Limited
spoil from the construction of WS pipelines is about 74,000m
3.
- A spoil disposal site with a total area of 5.43ha has been selected about 3.2km downstream of the dam. Currently the land use of the site is wasteland and acquisition of the land has been included in the project design and overall project RP.
- Construction waste will be promptly removed from the sites. Burning of construction waste will be prohibited.
- Spoil from construction of WS pipelines will be temporarily stored at 7 selected small sites along the pipeline route for later backfilling or being used as soil cover.
- All spoil disposal sites will be landscaped at the end of the disposal operation.
Contractors Included in soil erosion control
plan
Construction budget
Refuse from construction camps of some 580 workers (at peak time, about 0.522t/d) could create potential new pollution sources in the project areas.
Dustbins and solid waste tank will be installed on site for collection, and collected refuse will be sent to nearby transfer station of Huaxi Dis. by local environmental sanitation Dept.
Contractors 16.81 Construction budget
Noise
Noise from excavation, drilling, blasting, aggregate processing, concrete batching, and construction equipment will potentially affect nearby villagers. Heavy duty trucks will use village roads which will bring significantly increased traffic noise to nearby worker camp and local residents (five households involved).
- Set up 5 warning signs along main transportation routes to limit vehicle speed and prohibit honking;
- Noisy machines will be properly maintained with the adoption of necessary noise reduction technology, e.g., mobile sound barrier;
- Nighttime use of noisy machines, such as pile-drivers and concrete vibrators, will be prohibited;
- Construction activities, in particular, blasting, will be scheduled carefully to minimize noise impacts from construction machinery.
Contractors 50.5 Construction budget
5
Potential Impacts Mitigation Measures Responsible Agencies
Budget (CNY 10,000)
Remarks
Ecology
Land occupation, construction activities and increased human activities around project sites will bring damage to local vegetation and consequently lead to the migration of local terrestrial wildlife, including four kinds of wildlife under state Class 2 protection in the project-affected area as identified in EIA survey (all are birds). Since the project-affected area is not their main habitat, with the implementation of re-vegetation work planned under the project, the expected adverse impacts will be limited and temporary.
- Strengthen the education of workers and nearby residents to minimize vegetation damage and impacts on local wildlife;
- Temporary land occupation will be planned well ahead of the construction to minimize disturbance. Land will be reinstated to its original condition upon completion of construction;
- Top soil will be reserved at the borrow pit sites, which will be used for rehabilitation and reclamation of the sites upon project completion;
- Re-vegetation measures have been included in the project soil conservation plan for all the sites.
Contractor
23.2 from construction budget, also partly from
resettlement budget
Construction budget and resettlement budget
One ancient tree (Liquidambar formosana, nationally Grade III) will be flooded with reservoir impoundment.
- The ancient tree will be replanted by local forestry authorities, who have sufficient competence and experience for replantation of such tree species based on a carefully designed replantation plant to be developed and approved during project implementation
Contractor, local forestry authorities
Expected impacts on aquatic ecosystem, in particular, local fishes, will mainly result from blasting, excavation of dam foundation, cofferdam for river closure and accidental discharge of untreated construction wastewater, limited to construction phase.
- During dam construction, measures like net across river, sound and pulse current will be adopted to drive fishes away from the construction sites; no solid waste is allowed to be dumped into the river and all the wastewater is required to be treated before discharge into the river.
Contractor
Downstream Impacts
Temporary cutting-off during construction may affect the downstream water uses.
During construction, river flow will be discharged through diversion tunnel and the designed minimum discharge flow will be maintained. With the supplement of downstream small streams (Sire and Daya), the river closure for project construction will have no significant impact on hydrological regime of the lower reach.
Contractor Included in engineering
cost
Construction budget
Social Impacts Changes of affected people lives due to land acquisition
Implement Resettlement Plan in compliance with ADB policies.
Contractor Resettlement
budget Resettlement budget
6
Potential Impacts Mitigation Measures Responsible Agencies
Budget (CNY 10,000)
Remarks
Public Health and Safety
Epidemics and infectious diseases among concentrated construction workers (580 workers at peak time), which could also be a source of epidemics including AIDS, affecting not only the workforce itself but also the local communities.
Contractors shall take necessary safety measures at the construction sites to protect the public and construction workers, including:
- Dedicated staff shall be assigned to implement health awareness program among the public and construction workers in project-affected area;
- Carry out hygienic cleaning (including regular site disinfection and mosquito killing and rat elimination), and implement quarterly sanitary inspection at construction site;
- Strengthen disinfection and monitoring of drinking water at construction site;
- Warning signs will be provided to alert potential safety hazards at and around the construction sites;
- Establish health records for construction workers based on regular physical examination, and establish and implement a timely epidemic reporting network.
Contractor, local CDC
25.48 Construction budget
Cultural Relics
There are two sites identified with limited cultural value that will be flooded with reservoir impoundment, namely Geyue Bridge (built in Qing Dynasty, current access to the village covered by the project RP, only its foundation remains original) and Geyue Hydropower Station (a military hydropower station, classified as Chinese revolutionary relics of 1960’s).
As per the protection plan of cultural relics proposed in the “Investigation and Survey Report of Cultral Relics within Land Use Scope of Guiyang Hongyan Reservoir Project” and the requirements in the “Official Letter on the Protection of Cultural Relics within the Land Use Scope of Guiyang Hongyan Reservoir Project” (QianWenWuHan[2013] No.25), as the mitigation measures, before reservoir impoundment, relevant data collection and mapping works will be done for the two sites before being flooded.
Contractors
1115 (1100 for reconstruction of hydropower
station for functional
replacement)
Resettlement budget
Discovery of cultural relics during excavation
Construction will be immediately suspended if any archaeological or other cultural properties are found. Relevant cultural authority, as well as the project management office (PMO), will be notified promptly, and only after a thorough investigation will construction resume.
Contractors - -
7
Potential Impacts Mitigation Measures Responsible Agencies
Budget (CNY 10,000)
Remarks
Soil erosion
Access roads, quarry, borrow pits and spoil site would destroy local vegetation, causing water and soil erosion. The project plans one spoil disposal site (5.43ha), two quarries (respectively 3.00ha and 6.74ha) and one borrow pit (0.42ha) near the dam site to meet the project needs, which will increase local soil erosion and vegetation damage.
- Temporary land occupation will be planned well ahead of the construction to minimize the disturbance..
- Avoid occupation of agricultural or productive fields.
- Materials will be stored in appropriate places and covered or sprayed to minimize dust generation.
- Land will be reclaimed as soon as possible after construction by planting grass, shrubs or trees.
- Top soil will be collected and reserved at the borrow pit site. The soil will be used for land reclamation of the sites as soon as the operations are completed.
- A soil erosion control plan has been developed for the project (including relevant monitoring plan), which will be strictly implemented during construction.
Contractor Resettlement
budgets Resettlement budget
8
Potential Impacts Mitigation Measures Responsible Agencies
Budget (CNY 10,000)
Remarks
Others
A small amount of explosives and oil will be locally purchased and used during project constructions but without explosives depot and oil depot on site, therefore, the safety during their transportation and use will be one of the key concerns in the environmental risk assessment.
- Before any use of explosives and oil depot, establish and implement clear responsibility system by the IA, which should also cover relevant contractors and subcontractors to ensure the safety during transportation and handling with the approval from local work safety administration and public security bureau;
- The transportation of oil and explosives should only be done with the approval from local public security and environmental protection authorities ;
- Seepage and spillage prevention devices shall be used for their transportation, for example, airtight oil tank will be used for oil transportation, and the explosives and detonators should be transported separately. The transportation and storage should be done as per relevant specifications (e.g., Rules for Transportation of Hazardous Goods by Automobiles, Operation Code for Transportation, Loading and Unloading of Hazardous Goods by Automobiles and so on) at designated locations;
- Necessary firefighting equipment, such as distinguishers, should be prepared with regular replacement.
Contractor - Construction budget
Disturbance of existing utilities (pipelines, cables)
Avoid other utilities in design and if necessary divert or reinstate relevant areas during construction.
Contractor Construction budget
Environmental monitoring against identified impacts needs to be implemented to determine the effectiveness of implemented mitigation measures.
Implement the environmental monitoring plan of the project EMP for construction phase.
Contractor 38.10 Construction budget
B. Operation Phase
Change in Land use
Permanent land occupation of 183.41ha for reservoir and other components.
Implement Resettlement Plan in compliance with ADB policies.
Huaxi PMO Resettlement
budget Resettlement budget
9
Potential Impacts Mitigation Measures Responsible Agencies
Budget (CNY 10,000)
Remarks
Hydrological regime during reservoir impoundment and operation
The reservoir impoundment will take 32 days to reach dead storage level and 120 days to reach normal storage level. The reservoir impoundment and operation will change the hydrological regime of reservoir area and downstream reach by raising the reservoir level and slowing down the flow rate.
With the maintenance of minimum discharge level at 0.284m
3/s and the supplement of downstream
tributaries, the lower reach will not be cut off and the minimum ecological and water use demand could be met.
Huaxi PMO 80
Equipment cost, included in construction budget.
Downstream water use
Reduced flow in watercourse downstream during operation will cause impacts on downstream water uses.
Reservoir water quality
The reservoir impoundment will flood existing farmland, forestland, toilets, livestock pens and so on, during which process organic matter, applied chemical fertilizer pesticide will be released in water.
Before flooding, the detailed reservoir clearing plan will be implemented as part of the project RP to properly remove buildings, structure, trees and solid waste within the reservoir area and implement sanitary clearance under the guidance of local health and epidemic prevention department.
Huaxi PMO Included in
resettlement budget
Resettlement budget
Limited non-point pollution sources for proposed Hongyan reservoir mainly come for soil erosion in Maling River Basin. Eutrophication analysis conducted during EIA study concludes that the reservoir is predicted to stay at the mesotrophication level.
Upon the completion and operation of the reservoir, water source protection zone is to be
established with systematic water source protection policies to be strictly implemented around the protection zone, as per existing administrative practice for water resource protection and management in China.
Local Government
25 Government budget
10
Potential Impacts Mitigation Measures Responsible Agencies
Budget (CNY 10,000)
Remarks
As part of construction plan of new countryside implemented by Huaxi District Government, control agricultural non-point source pollution and domestic wastewater and enhance soil conservation in the region by:
- Publicizing water source protection, and enhance public education on scientific fertilizer and pesticide application (to be financed by EMP budget under this project);
- Promote the construction of septic tanks for the treatment of wastewater from toilets and pigpens and for generation of renewable energy;
- Forbid crop straw burning in the fields, and maximize the utilization of straw as fodder and in industrial sector;
- Develop ecological agriculture.
Local Government Huaxi PMO
6 Operational cost
Application of Integrated Pest Management (IPM), which is already an on-going program in the project area.
Local Government
- Government budget
Implement real-time monitoring of Hongyan reservoir. Huaxi PMO 80
Equipment cost, included in construction budget
Uncontrolled access by the public, through the access road, to the reservoir could bring potential sources of contamination.
The proposed management committee of water source protection zone will implement daily patrol within the protection zone, and warning signs will be erected around the zone.
Local Government
- Government budget
Domestic wastewater generated by reservoir operators may pollute the reservoir water if not properly treated.
The set of compact wastewater treatment facility installed during construction for the treatment of domestic wastewater from work camp will be used for the treatment of domestic wastewater generated by operators.
Huaxi PMO 3 Operational cost
11
Potential Impacts Mitigation Measures Responsible Agencies
Budget (CNY 10,000)
Remarks
Water pollution in downstream
river
Uncontrolled domestic wastewater discharge may pollute the water in downstream receiving river reaches
Built and operate WWTP in the Maling Township by Maling Township government (Phase 1 WWTP with the treatment capacity of 30,000m
3/d has been completed
and put into use since Dec. 2014);
Reuse of treated wastewater;
Monitor the wastewater discharge and water quality in the receiving water body.
Local Government
- Government budget
Resettlement
911 persons have to be relocated for the project with the production resettlement of 1078 persons.
Prepare and implement resettlement plan in accordance with ADB requirements.
Huaxi PMO Resettlement
cost Resettlement budget
Discharge of domestic wastewater from resettlement sites without proper treatment may pollute local river.
- A 6m3 biogas tanks will be installed for each
household for the treatment of domestic wastewater in the resettlement sites.
- Sufficient training will be provided to the villagers to ensure normal and safe operation of biogas tanks.
Huaxi PMO 251 Resettlement budget
The daily human activities may affect local ecosystem.
Strengthen public education on ecological protection with proper environmental signs installed around the resettlement sites.
Huaxi PMO 9.6 Resettlement budget
Domestic solid waste from resettlement sites without proper disposal may bring incremental pollution.
- The centralized resettlement sites will be installed with dustbins and solid waste tanks for the collection of domestic solid waste, which will then be regularly delivered to local environmental sanitation department for treatment;
- For the scattered resettlement sites in rural areas, limited quantity of generated domestic solid waste (mostly organic) will be sorted for fermentation in biogas tanks or composting, and the remaining solid waste will be timely collected by local sanitary department.
Local government
Huaxi PMO
4 Resettlement budget
12
Potential Impacts Mitigation Measures Responsible Agencies
Budget (CNY 10,000)
Remarks
Centralized settlement may increase the risks related to public health.
- Public health management system will be established and implemented in the resettlement sites with the strengthening of relevant organizational arrangements;
- Before moving into the new houses, the house will be thoroughly cleaned with filling-up of waterways and mosquito killing;
- During project operation, rat elimination will be carried out twice a year in the resettlement sites, and mosquito killing once a year. Health education and vaccination will be implemented by local public health department on resettled villagers;
- Physical examination will also be carried out on about 10% of resettled villagers to understand potential epidemic situation.
Local government
Huaxi PMO
16.19 Resettlement budget
The effectiveness of implemented mitigation measures needs to be regularly monitored.
Implement necessary environmental monitoring within the resettlement sites on drinking water quality, domestic wastewater characteristics and public health.
Local government
Huaxi PMO
8.1 Resettlement budget
Ecology Flow reduction in downstream river reaches may affect local aquatic ecosystem, in particular, local fishes
- Maintain minimum flow from Hongyan reservoir at 0.284m
3/s for ecological function.
- Strengthen public education on the protection of local ecosystem, in particular, local fishes;
- Strengthen local fishery administration;
- Implement artificial fish releasing in Maling River.
Huaxi PMO 57 Operation cost
Groundwater level
There is no concern of permanent leakage for Hongyan reservoir during operation, and the groundwater volume will not change in the area. Only that limestone and sandshale are distributed on both banks in the reservoir head area with high water permeability at their interface
Seepage prevention measures such as curtain grouting will be implemented for the reservoir.
Contractor - Construction budget
Cumulative impacts
The Hongyan reservoir is currently the only reservoir on the Maling River. No obvious cumulative impact are expected.
- -
13
Potential Impacts Mitigation Measures Responsible Agencies
Budget (CNY 10,000)
Remarks
Risks
Risk of geological disaster and resulted dam failure is unlikely for Hongyan Reservoir but with serious consequence.
Review by dam safety panel and implementation of dam safety plan to be prepared by the panel.
Guiyang PMO
Huaxi PMO
Included in overall dam
safety budget under
GIWRMP
Operation cost
Hazardous waste: Used engine oil and waste capacitors will be generated during the maintenance of transformer and generator sets, which may cause potential environmental risks.
Pesticide and rodenticide will be used for mosquito killing and rat elimination during project operation, which are also classified as hazardous waste.
- Oils containing PCBs would be prohibited from use in the project.
- A 12m3 accident oil pool of reinforced concrete
structure will be constructed with surface seepage prevention measures to prevent any discharge of used oil in an emergency;
- Hazardous waste will be stored, treated and recycled by the manufacturers and qualified organizations;
- The IA should develop the hazardous waste treatment regulations, and sand and some fire-fighting equipment will be prepared against any emergency.
Huaxi PMO, operator
Included in operation cost
Operation cost
Others
Environmental monitoring against identified impacts needs to be implemented to determine the effectiveness of implemented mitigation measures.
Implement the environmental monitoring plan of the project EMP for operation phase.
Huaxi PMO 38.8 Operation cost
14
C. ENVIRONMENTAL MONITORING
10. An environmental monitoring plan has been developed in the project EIA which is
summarized in Table A2. The monitoring plan was developed in accordance with the
environmental monitoring requirements against potential individual environmental
impacts or issues identified in the project EIA study. The monitoring plan details the
scope of monitoring, monitoring locations, monitoring parameters and frequency, data
processing and quality control requirements. An environmental monitoring budget of
CNY1.46million has been estimated and included in project cost estimate.
11. The monitoring plan will be implemented by qualified environmental monitoring
institutes or consultants to be engaged by Huaxi District PMO.
12. For compliance monitoring, the monitoring will follow the methodology provided in
the applicable national standards. Other associated standards are national
environmental quality standards and pollutant discharge/emission standards. 13. A group of environmental supervision engineers (ESE) will be employed by the Huaxi PMO to supervise/monitor on spot the performance of construction contractors in implementation of environmental mitigation measures, including the contractors involved in construction of the Hongyan Reservoir project. 14. An external environmental monitor (EEM) will be engaged by Guiyang PMO to monitor and evaluate the implementation of subproject EMPs, actually resulted impacts, effectiveness of implemented mitigation measures, and needed corrections and improvements. The EEM will cover all the subprojects of the GIWRMP including the Hongyan Reservoir subproject. 15. In addition to the monitoring plan mentioned above, monitoring of the ambient environment and public health involves a number of government agencies. The Huaxi District EPB is responsible for conducting compliance monitoring for air, water, soil, noise at the designated monitoring locations and will conduct additional water quality monitoring around the project areas. The Huaxi Soil Conservation Monitoring Station will also conduct a water and soil loss monitoring, and the Huaxi Center of Disease Control (CDC) will monitor public health in project area. 16. The Guiyang PMO will submit to ADB semi-annual environmental reports on EMP implementation including environmental monitoring results, implementation and effectiveness of mitigation measures, environmental compliance, and progress of training and capacity building. The reports would cover all the subprojects including the Hongyan Reservoir project. The Guiyang PMO will also be responsible for implementation of the ADB’s comments including comments on improvement of environmental monitoring plans.
15
Table A2 Environmental Monitoring plan Hongyan Reservoir Subproject/GIWRMP
Item Location Parameters Frequency Budget CNY104
Responsible
Agencies
A. Construction Phase 38.10
Wastewater from foundation pit
One point at the outfall of treatment facility for wastewater from foundation pit
pH, SS Once a year, two days each time
4.5 PMO
Qualified institute
Wastewater from concrete batching system
concrete batching system pH, SS, flow rate Twice a year, two days each time
Flushing wastewater from aggregate processing system
One point at the outfall of treatment facility for flushing wastewater from aggregate processing system
pH, SS, flow rate Twice a year, two days each time
Domestic wastewater from work camp
Two points at the outfall of treatment facility for domestic wastewater from dam site camp and borrow area camp
CODCr, NH3-N, TN, TP, coliform, oil, SS and flow rate
Twice a year, two days each time
4.8 PMO
Qualified institute
Drinking water quality
One point, at the outlet of storage tank for drinking water
17 indicators, including chroma, turbidity, odor and taste, visible substances, pH, total hardness, Fe, Mn, Cu, Zn, sulfate, chloride, TDS, fluoride, nitrate, total bacteria count, total fecal coliform, as per GB5479-2006
Once every two months, two days each time
9.0 PMO
Qualified institute
16
Item Location Parameters Frequency Budget CNY104
Responsible
Agencies
Surface Water Quality
Two points, namely: 1.0km upstream of dam site 1.0km downstream of dam site
27 indicators including Water temperature, pH, DO, CODMn, BOD5, NH3-N, TP, TN, anionic surfactant, volatile phenol, petroleum, fluoride, cyanide, sulfide, Hg, Cd, Cr(6+), Pb, Cu, Zn, Cd, Fe, Mn, As, fecal coliform and SS
3 times/year, 2 days each time
4.8 PMO
Qualified institute
Air Quality
Two points, respectively near Haicaitang settlement and work camp at dam site
PM10 Twice a year, 3 days each time 9.6
PMO
Qualified
institute
Noise
Three points, respectively near Haicaitang settlement, work camp at dam site and settlement of Maling Township
Leq(A)
3 times/year, 2 days each time 2.4
PMO
Qualified
institute
Public health Project area Sampling check of epidemic situation 10% of workers 3.0
PMO
Local CDC
Soil erosion
Dam site, quarry, borrow area,
spoil disposal site, roads,
resettlement site
Soil loss, effects of soil conservation measures
As per soil erosion control
plan of the project
Included in soil
conservation
budget
PMO
Local WRB
B. Operation Phase 46.9
17
Item Location Parameters Frequency Budget CNY104
Responsible
Agencies
Water Quality Two points, namely:
Dam site and reservoir tail
19 indicators, including chroma,
turbidity, odor and taste, visible
substances, pH, total hardness,
Fe, Mn, Cu, Zn, volatile phenol,
Hg, sulfate, chloride, TDS,
fluoride, nitrate, total bacteria
count, total fecal coliform, as
per GB5479-2006
Once a month, two days each
time 10.8
PMO
Qualified
institute
Terrestrial
ecology
Reservoir area, project site,
resettlement site and water
transmission pipeline areas
Composition, distribution and
characteristics of terrestrial
flora and fauna, change of
biodiversity, implementation of
re-vegetation measures
Totally twice, once in the year
after project completion, and
once in three years after
reservoir impoundment
10.0
PMO
Qualified
institute
Aquatic ecology
Three cross-sections, respectively
at:
Reservoir tail, dam site,
confluence of Maling River and
Daya River 1.8km downstream of
dam site
Aquatic organism and fish
Once every two years after
reservoir impoundment,
totally three times 18.0
PMO
Qualified
institute
Resettlement Sites 8.10
Drinking water
quality One point at Geyue Village
17 indicators, including chroma,
turbidity, odor and taste, visible
substances, pH, total hardness,
Fe, Mn, Cu, Zn, sulfate,
chloride, TDS, fluoride, nitrate,
total bacteria count, total fecal
coliform, as per GB5479-2006
For three years after
resettlement, three times a
year, two days each time 2.7
PMO Qualified institute
18
Item Location Parameters Frequency Budget CNY104
Responsible
Agencies
Domestic
wastewater One point at Geyue Village
8 indicators: pH, COD, BOD5,
TP, flow rate, NH3-N, SS and oil
For three years after
resettlement, three times a
year, two days each time 2.7
PMO Qualified institute
Public health One point at Maling Township Epidemic situation For three years after
resettlement, once a year 2.7
PMO Qualified institute
19
D. PUBLIC CONSULTATION
1. Public Consultation during Project Preparation 17. The first round of public consultation was conducted by EIA team following PRC national guidelines in March 2013, and the second round of public consultation was conducted by the EIA team in August 2013. 18. Consultation after SEIA posted on ADB’s website A third round public consultation will be conducted after the SEIA is posted on ADB’s website. Comments and suggestions will be gathered and incorporated in the final Chinese version EIA and final English SEIA. 2. Future Public Consultation Plan 19. A draft further consultation plan has been developed for the project. The plan includes public participation in: (i) monitoring impacts and mitigation measures during project construction and operation; (ii) evaluating environmental and economic benefits and social impacts; and (iii) interviewing the public after the project is completed. Different methods of public consultation, such as site visit, bulletins, investigation on specific issues, interviews, and public hearings will be adopted as indicated in Table A3. 20 The public participation plan is part of the project implementation and management plan. The Huaxi PMO is responsible for ensuring there is public participation during project implementation. The contractors will be asked to communicate and consult with the communities near the construction sites. An eye-catching public notice board will be erected at each construction site to notify the public of the main construction activities and the construction duration. The board will also provide contact names and telephone numbers to enable the public to express their concerns and complaints about construction activities. 21. During project implementation, the ESE will be assigned with responsibilities to inform and contact with the communities near the construction sites and to hear and collect public concerns and complaints. The Huaxi PMO will be responsible for responding to public concerns and complaints and for informing public of project progress as well as feedback to public concerns and complaints.
20
Table A3: Public Consultation Plan
Organizer Approach Times Subject Attendees
A. Project Preparation
Huaxi PMO/ESSG
EIA team
Public meeting Once Environmental quality status, project information, major impacts and benefits, mitigation measures, and attitudes, comments and recommendations of the public
Residents, organizations and other stakeholders within construction and service area, specialists from various sectors
Questionnaire Once
B. Construction Phase
Huaxi PMO/ESSG
ESE
Public consultation and site visits
twice Adjusting of mitigation measures if necessary, construction impacts, comments and suggestions
Residents adjacent to subproject, representatives of social sectors
Guiyang ESSD/PMO
Huaxi ESSG/PMO
Expert workshop or press conference
As needed based on public consultation
Comments and suggestions on mitigation measures, public opinions
Experts of various sectors, media
Huaxi PMO/ESSG
ESE
Survey on resettlement
At least once
Comments on resettlements, improvement of living conditions, livelihood and poverty reduction; comments and suggestions
Persons affected by resettlement and relocation
Guiyang ESSD/PMO
Information disclosure on internet
Once a year Subproject progress, environmental impacts, mitigation measures
Public
C. Operation Phase
Huaxi WRB
Huaxi PMO/ESSG
Public consultation and site visits
Once in the beginning two years
Effects of mitigation measures, impacts of operation, comments and suggestions
Residents adjacent to reservoir, downstream beneficiaries, representatives of residents and social sectors
Huaxi WRB
Huaxi PMO/ESSG
Expert workshop or press conference
As needed based on public consultation
Comments and suggestions on operational impacts, public opinions
Experts of various sectors, media
E. RESPONSIBILITIES AND AUTHORITIES
1. Environmental Responsibilities and Institutional Arrangements 22. The Guiyang PMO will take the overall responsibilities of the project environmental management by a dedicated division of Environmental and Social Safeguard Division (ESSD) established in Guiyang PMO. Various organizations with different environmental management responsibilities will be involved in implementation of the EMP, including Guiyang EPB, ESSG (Environmental and Social Safeguard Group) in Huaxi PMO, ESE, monitoring institutes, EEM, and contractors. Those organizations form an environmental management system for the subproject, as shown in Figure A1
21
Figure A1: Environmental Management System for Hongyan Reservoir project
23. The ESSD and ESSG has been established in Guiyang PMO and Huaxi PMO respectively. They will be the key actors in the environmental management system for the subproject. Table A4 shows the environmental responsibilities of all the major organizations/agencies involved.
24. The ESSD of Guiyang PMO and the ESSG of Huaxi PMO are responsible for environmental management and implementation of mitigation measures. An environmental officer is assigned to be specifically responsible for environmental management in the ESSD and in the ESSG. They will ensure the EMP will be carried out and will engage design institutes and professional consultants to help with environmental management at the preparation, design, construction and operation phases. They will also be responsible for arranging environmental monitoring review and responding to any adverse impacts beyond those foreseen in the EIA. They will also attend to Guiyang EPB’s and ADB’s requests for mitigating measures.
ESSD EEM
Monitoring
Institutes Huaxi ESSG ESE
Contractors/Construction area/resettlement
sites/affected area
ADB PMO Guiyang
EPB
22
Table A4: Environmental Responsibilities
Organizations/Agencies Environmental Responsibilities
ADB i) review of EIA documents;
ii)review of PMO environmental reports
iii) supervision of EMP implementation
Guiyang EPB i)review of PMO environmental reports
ii) supervision of EMP implementation
Guiyang PMO i)implementation of GIWRMP including Limu reservoir subproject; ii)preparation and issue of environmental management rules (Rules); iii)
ESSD i)preparation of subproject EIAs/IEEs ii)implementation of EMPs iii)engagement and management of ESE; iv)engagement and management of monitoring institutes; v) engagement and management of EEM; vi)implementation of environmental training program; vii)preparation of environmental management reports; viii)coordination with relevant government agencies.
Huaxi ESSG i)ensure Rules be included in subproject construction contracts; ii) implementation of subproject environmental training program; iii)cooperate with ESE and monitoring institutes; iv)preparation of environmental management reports; v)other tasks asked by Guiyang ESSD;
ESE i)supervise on spot contractor’s implementation of environmental mitigation measures; ii)preparation of ESE reports; iii)public awareness and collection of public concerns and complaints;
Monitoring institutes i)carry out environmental monitoring tasks assigned by PMO; ii)preparation of monitoring reports;
EEM i)carry out external monitoring tasks; ii)direct and advise PMO on environmental management issues
Contractors i)Implementation of environmental mitigation measures during subproject construction; ii)preparation of environmental reports to ESE;
24. Construction contractors will be responsible for actual implementation of mitigation measures related to subproject construction. 25. The EEM will advise the PMO, ESSD, ESSG, ESE, and contractors on all aspects of environmental management and monitoring for the subproject. The EEM will: (i) review project environmental practices and procedures; (ii) provide guidance in environmental standard setting and assist in implementation procedures; (iii) review the start-up of the project facilities; (iv) advise on mitigation during construction and operation phases in accordance with the EMP; and (v) investigate and make recommendations on other environmental issues. 2. Institutional Strengthening and Training 26. As mentioned above, both the ESSD under the PMO and ESSG under Huaxi PMO are the most important institutional elements for direct environmental management during the subproject implementation. The ESSD will consist of one head, with strong environmental and ADB project background, fully bilingual, and extensive experience in leadership positions, one environmental specialist with strong environmental impact assessment and ADB experience and two specialists to cover the social and resettlement matters.
23
27. The ESSD will engage qualified environmental consultants at part time bases to assist in implementing its functions, including review of EIAs/IEEs for future subprojects, review of monitoring results, preparation and updating of detailed EMPs for subproject operations, as well as conducting specific environmental investigations, evaluations, and consultations. 28. The ESSG will also have its own respective environmental specialists to ensure environmental management of its own subprojects, including engaging environmental impact assessment, assurance and supervision of mitigation measure implementation, engaging and supervising other professional services (e.g., environmental monitoring) as needed. 29. All ESSD and ESSG members and engaged environmental specialists will receive training in environmental management, monitoring and supervision, mitigation planning, emergency response, environmental policies, and other environmental management techniques. Funding for this training has been included in the subproject budget and in the operation and maintenance (O&M) budgets during the operation phase.
Table A5: Institutional Strengthening and Training Hongyan Reservoir Subproject/GIWRMP
Institutional Strengthening Activities
Responsible Agencies
Strengthening Plan Timing
Capacity Building Guiyang PMO, Huaxi PMO
Establishment of ESSD in PMO and Huaxi PMO and development of responsibilities for each position
During project preparation and implementation
Monitoring Same as above
certificated monitoring agencies to implement monitoring plan
During project preparation and implementation
External Monitoring
Guiyang PMO A panel to be engaged by PMO
During project implementation
B. Training Attendees Contents Times Period (days)
Number of
person
Cost (CNY/
person/ day)
Total Cost (10
4 CNY)
EMP implementation and adjustment, settlement of disputes
Guiyang PMO Huaxi PMO
Development and adjustment of EMP, emergency response, environmental laws and regulations, environmental management
2 3 20 400 4.8
Environmental policies and plans
Guiyang PMO Huaxi PMO
Environmental laws and regulations; environmental management; emergency response
2 2 15 400 2.4
Environmental supervision and the Rules
Guiyang PMO Supervision engineers Contractors
Environmental supervision mechanism and the Rules
3 2 15 300 2.8
Total 10.0
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30. In addition to the above environmental training, training is needed for the ESEs and construction contractors in environmental laws and regulations, environmental standards, Environmental Management Rules for GIWRMP Construction, environmental supervision requirements and procedures, as well as preparation of environmental reports. Table A5 shows the summary of institutional strengthening and training program for the Hongyan Reservoir project.
F. REPORTING AND SUPERVISION 31. The environmental monitoring institutes engaged by Guiyang PMO will prepare compliance monitoring reports to PMO. The compliance monitoring reports will include the project background, construction activities, environmental conditions, measurement or sampling locations, analytical results, interpretation and implication of the monitoring results, determination of the compliance status with regard to applicable regulations and standards, and recommendations for improvement. The PMO will submit compliance monitoring reports to ADB as appropriate. 32. The EEM will prepare external monitoring reports twice a year to PMO and, through PMO, to Guiyang EPB and ADB. The external monitoring reports will include assessment on implementation of EMP, effects of mitigation measures, actual environmental impacts, and comments on corrections and improvements. 33. During construction, contractors will prepare monthly reports to ESE on their environmental performance. The ESE will prepare weekly and monthly reports to ESSD and ESSG on environmental supervision activities and contractors’ performance as well as actual environmental situations in project construction areas. 34. The Huaxi ESSG will prepare semi-annual environmental reports to ESSD on the environmental management of subprojects in Huaxi District, including the Hongyan Reservoir project. 35. The ESSD will prepare semi-annual environmental management reports to Guiyang PMO and ADB on environmental management in GIWRMP, including preparation of EIAs/IEEs for future subprojects, implementation of EMPs, summary of ESSGs reports, summary of environmental monitoring reports, public consultations, and work plan for next step tasks. 36. The contractors will be trained to take immediate actions to correct unexpected adverse impacts or ineffective or insufficient mitigation measures, as required by the EMP. The PMO and ESSD/ESSG will also respond to these reports, to ensure that contractors have taken appropriate and timely actions. Additional measures may be taken if needed to ensure all issues raised by those monitoring reports will be appropriately addressed. 37. The PMO will submit to ADB the EMP progress reports and information including project implementation, and environmental performance of the contractors, local PMOs and consultants. These reports will include: (i) semi-annual environmental reports on EMP implementation; and (ii) a project completion report no later than three months after completion of the GIWRMP including the Hongyan Reservoir project. Progress reports will emphasize progress made in the areas of water quality improvements, monitoring results, implementation of mitigation measures, environmental compliance, training and capacity building progress.
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38. A subproject completion report will be prepared by Huaxi PMO for the Limu Reservoir Subproject after completion of subproject implementation. The report will be submitted to Guiyang PMO. The Guiyang PMO will prepare a completion report to ADB which would cover all the subprojects of the GIWRMP, including assessment on implementation of EMPs for all the subprojects. 38. According to Chinese regulations, Huaxi EPB is responsible for environmental supervision of activities of subprojects in Huaxi District and the Guiyang EPB is responsible for environmental supervision of activities of GIWRMP including all the subprojects. G. WORK PLAN 39. The Guiyang PMO has developed “Environmental Management Rules for GIWRMP Construction (Rules)”, attached as Annex 1 of the EMP, which includes detailed responsibilities and requirements for contractors. The Huaxi ESSG will be responsible for inclusion of the Rules in all the tender documents and then in all the construction contracts for Limu Reservoir construction before the subproject construction. 40. The ESSD and Huaxi ESSG will detail their responsibilities and prepare work plan/schedules for their environmental management staff. 41. Before start-up of subproject facilities operation, the ESSG, with assistance of environmental consultants, will develop detailed work plans for environmental management and monitoring during operation based on the EMP. These work plans will be submitted to Guiyang EPB and the PMO to help them to supervise implementation. H. COST ESTIMATE 42. The Huaxi PMO will develop detailed plans for procurement of equipment and materials and civil works for implementing mitigation measures and monitoring plans. These plans will be incorporated into the project contracts. 43. A total cost of CNY17.89 million, or about 2.94% of the total capital costs for the project (CNY607.63 million), will be allocated for environmental mitigation, environmental monitoring, environmental training and capacity building. Table A6 shows the major components of the cost estimate. The costs estimate have been included in the subproject budgets. Table A6 Environmental Cost Estimates
Components Cost estimates CNY
1.Environmental protection engineering
measures
4.09 million
2.Environmental monitoring 1.46 million
3.Equipment, instruments and their
installation
1.48 million
4.Temporary environmental protection
measures
3.17 million
5. Other cost (environmental studies,
supervision and management)
6.38 million
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Components Cost estimates CNY
6. contingency 1.63 million
Total 17.89 million
44. There are also measures related directly to project construction which also help mitigate potential environmental impacts, such as measures to be taken by construction contractors. The costs for these measures have been included in the construction budget. I. MECHANISMS FOR FEEDBACK AND ADJUSTMENT 45. The effectiveness of mitigation measures and monitoring plans will be evaluated through a feedback reporting system. Adjustments to the EMP will be made, if necessary. Guiyang PMO will play critical roles in this feedback and adjustment mechanism, as shown in Figure A2. 46. There will be two tiers of feedback and adjustment. If EMP modification is requested by the contractors and/or Huaxi PMO, Guiyang PMO will review their proposals in detail. If the modifications are approved in principle, specific modifications will then be submitted by contractors or Huaxi PMO to Guiyang PMO for further review. If, modifications are significant, the Guiyang PMO will submit the proposals to Guiyang EPB and ADB for review and comments. Comments and suggestions from Guiyang EPB and ADB will be considered by Guiyang PMO in the final revisions to the EMP. Contractors and Huaxi PMO will then implement the modifications.
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Figure A2: Mechanism for Feedback and Adjustment of EMP
Guiyang EPB
ADB
Guiyang PMO
Comments and Suggestions Reporting
Contractors
Huaxi PMO
Documentation of Project Adjustment
Comments and Suggestions
Implementation of Mitigation Measures and
Monitoring plans
Feedback on Performance
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Annex 1
Guiyang Integrated Water Resources Management Project ENVIRONMENTAL MANAGEMENT RULES
February 2010 Guiyang Project Management Office
Table of Contents Chapter 1 General Chapter 2 Environmental management and Environmental Supervision Chapter 3 Water Pollution Control Chapter 4 Air Pollution Control Chapter 5 Noise and Electromagnetic Radiation Pollution Control Chapter 6 Spoil Materials and Solid Wastes Management Chapter 7 Public Health Chapter 8 Wildlife and Rare Species Protection Chapter 9 Land Use, Water and Soil Conservation, and Greening Chapter 10 Cultural Relics Protection Chapter 11 Scenery Area Protection Chapter 12 Utilization of the Rules Attachments Attachment 1 Standards for Pollutant Discharge/sound environment standards Attachment 2 Allowable Values of Pollutant Discharge/noise value
ABBREVIATIONS CC Construction Contractor CR Chlorine Residual CSE Construction Supervision Engineer EIA Environmental Impact Assessment ERD Environment & Resettlement Division EPB Environmental Protection Bureau EPM Environmental Protection Measure ESE Environmental Supervision Engineer GIWRMP Guiyang Integrated Water Resources Management Project PMO Guiyang Project Management Office
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Chapter 1
General Clause 1.1 The Environmental Management Rules (Rules) for Construction of the Guiyang Integrated Water Resources Management Project (GIWRMP) has been prepared by the Guiyang Project Management Office (PMO). Clause 1.2 The preparation of the Rules is based on following documents:
(1) Loan Agreement between PRC and ADB for GIWRMP; (2) Pertinent national and Guizhou provincial laws, regulations, standards applicable
to GIWRMP; (3) The approval document of the Ministry of Environmental Protection on the
project; (4) Memorandum of ADB appraisal mission with Guiyang municipality government
(March 2009); (5) Environmental Management Plans for subprojects of the GIWRMP.
Clause 1.3 The main purpose of the Rules is to ensure implementation of the environmental protection measures required in above mentioned documents in the period of GIWRMP construction. Clause 1.4 The Rules is applicable only to GIWRMP construction areas (including construction sites and affected areas) and camp areas.
Chapter 2 Environmental Management and Supervision
Clause 2.1 The Environment and Resettlement Division (ERD) of Guiyang PMO shall, on behalf of the PMO, be fully responsible for GIWRMP environmental management. The environmental personnel in county/district PMOs, directed by Guiyang PMO, is responsible for environmental management in subprojects in the county/district. Clause 2.2 Environmental supervision is a complement and extension of engineering supervision. The Environmental Supervision Engineer (ESE) is entrusted by the PMO to environmentally supervise the construction activities of all construction contractors (CCs) involved in GIWRMP construction during the period of construction. Clause 2.3 For those non-significant environmental problems existing in construction areas or camping areas, the ESE may orally ask responsible CC to resolve and the CC shall resolve its problems following ESE’s instructions. Clause 2.4 For those significant environmental problems existing in construction areas or camping areas, the ESE shall prepare and sign an “Environmental Notice” to, through site Construction Supervision Engineer (CSE), pertinent CC and require the CC to solve the problem within a specified time limit. The CC shall take all measures possible to solve the problem within the time limit in accordance with ESE’s requirements and afterwards report the results to the ESE. Clause 2.5 In case that the CC refuses to solve the problem or the problem is not solved after the specified date, the ESE, after consultation with the ERD and CSE, shall, through the CSE, sign and issue an “Environmental Action Notice” to the CC. And the ERD or other qualified institutions assigned by the ERD shall enter, 14 days (7 days in special cases) after the notice issuing , the site and take actions to solve the problems. All the cost increase and damages to the PMO due to the actions shall be borne by the CC and shall be deducted from the next monthly payment to the CC. Clause 2.6 All written notices or communications between the ESE and CC shall be via the site CSE. Clause 2.7 The CSE shall follow the requirements of the Rules and cooperate actively with ESE’s work:
(1) Timely notify CCs of ESE’s personnel, their responsibilities and their power of environmental supervision at site;
(2) Timely notify ESE of any existing environmental problems found; (3) At no conditions and with no delay, sign of receiving and issuing or transfer any
notices and correspondences between the ESE and CCs. The ESE will bear the consequences due to the notices and correspondences.
Clause 2.8 The CSE shall support the PMO in its claiming on CCs following Clause 2.5. The PMO will take full responsibilities of the claim.
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Clause 2.9 All CCs shall strengthen environmental education and awareness for their employees such that they will consciously follow environmental protection laws, regulations, standards, contract provisions as well as the Rules. Any violation of the said documents will be punished in accordance with pertinent stipulations. Clause 2.10 All CCs shall, according to the nature of the project and their construction activities, establish environmental management systems and assign special environmental staff to be responsible, under guidance of the ESE, for environmental management. Clause 2.11 All CCs shall establish their internal environmental management systems, assign environmental personnel to carry out, with guidance of the ESE, environmental protection tasks in their responsible areas including areas of their sub-contractors. Clause 2.12 All CCs shall conduct their own environmental monitoring on issues or parameters as required by the Rules or by the ESE and provide the ESE with a monthly report on their environmental protection activities and monitoring results of each month. The contents and formats of the monthly report shall be consistent with the requirements of the ESE and shall be satisfactory to ESE. The ESE may require CCs to modify or update the contents and formats of their monthly reports. Clause 2.13 All CCs must ensure that all pollution control measures proceed simultaneously with their construction and operating activities. Clause 2.14 All CCs shall establish public awareness plates at appropriate positions to inform public about their construction activities, timing, contact ways etc.. CCs shall actively take measures to properly settle, including holding liabilities, any environmental disputes with residents or entities due to their construction or daily activities. Clause 2.15 Regular or special environmental monitoring may be conducted by agencies or institutes entrusted by the ERD in the construction areas and camping areas. The monitoring shall be arranged by the site CSE and informed in advance to pertinent CCs. All pertinent CCs shall make efforts to cooperate those monitoring activities. Clause 2.16 The environmental management of GIWRMP shall be supervised by environment agencies of local governments. The ESE and all CCs shall actively cooperate with environmental supervisions and inspections of the agencies.
Chapter 3 Water Pollution Control
Clause 3.1 All CCs shall incorporate environmental protection and effective water resources utilization into their work plans including implementation of wastewater treatment measures. Clause 3.2 All CCs and other organizations with wastewater discharge shall comply the wastewater discharge standards listed in Attachment 1. Any wastewater discharge shall not affect the functions of the water body receiving the wastewater. Clause 3.3 All CC’s shall take measures to reduce wastewater discharges, including domestic and production wastewater. For those wastewater necessary to be discharged following measures shall be taken: (a) Since the wastewater stemming from foundation excavation, quarry operation, and
aggregate processing contains plentiful suspended substance, CCs shall provide, according to the design requirements, purification facilities such as sumps, detention dikes or settlement pools etc. to ensure that SS in the discharged wastewater satisfies the standard;
(b) All equipment washing wastewater shall be collected and treated separately. Direct discharge without treatment is prohibited.
(c) All domestic wastewater shall be firstly fermented and disinfected through septic tanks and then centrally treated or transmitted through special pipelines to harmless water body; and
(d) Wastewater from medical care clinics and hospitals shall be treated as stipulated in the “Integrated Wastewater Discharge Standard” (GB8979-1996).
Clause 3.4 Monitoring shall be exercised and reported by all CCs on the wastewater they discharged. In case of any discharge of wastewater exceeding the standard or that the discharge of wastewater has virtually affected the function of the receiving water, the CC discharging the wastewater shall take necessary correction actions. Clause 3.5 Surface water shall be prevented from pollution as follows:
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(a) Any oil, acid liquid, alkaline liquid, or any other toxic liquid shall not be allowed to be discharged into any water body; Any container ever used to hold oil or any other toxic pollutant shall not be washed in the water body; Any production spoil material, domestic rubbish, and any other wastes shall not be discharged or poured into water body; Any liquid and solid waste with a radiation intensity exceeding the standard shall not be discharged into the water body.
(b) Fuel-tank farms and chemical storehouses shall be provided with protection measures, as required by the design and contract documents, to avoid soil and water pollution.
Clause 3.6 Groundwater shall be prevented from pollution as follows: (a) No seepage pit or well or crack shall be used to discharge wastewater; (b) Any chemical material to be applied to the cut-off works shall not be allowed to cause
groundwater pollution; and Chapter 4
Air Pollution Control Clause 4.1 The environmental air quality in residential area and those construction areas without construction operations shall be in compliance with the standards listed in Attachment 1. Clause 4.2 Any waste gas and dust arising from construction and production operations shall be in compliance with the standards specified in the “Integrated Emission Standards for Air Pollutants” (GB 16297-1996) as listed in Attachment 2. Clause 4.3 Construction machinery waste gas discharge shall follow requirements:
(a) The smoke from any diesel machinery and equipment shall be in compliance with the limit of FSN4.0 for smoke emission from “Fixed-Model Diesel Engines” as stated in the “Standards for Smoke Emission from Diesel Engine of Vehicles at Full Load” (GB14761.7-93) and with the limit as stated in the “Standard for Smoke Emission from Diesel Vehicles at Free Acceleration” (GB14761.6-93).
(b) The concentration of pollutants from any gasoline machinery and equipment shall be
in compliance with the following standards:
(b.1) The concentration of pollutants from a light vehicle shall be in compliance with the limit as stated in the “Standards for Exhaust Pollutant Emission from Light Vehicles” (GWPBI-1999);
(b.2) The concentration of pollutants from a gasoline engine of a vehicle shall be in consistency with the limit as listed in the “Standards for Pollutant Emission from Gasoline Engine of a Vehicle” (GB14761.5-93).
Clause 4.4 Aggregate processing and batching plant operations shall be provided with dedusting measures to meet corresponding environmental and labor protection requirements, and to avoid possible environmental pollution and worker health damage. Clause 4.5 Before blasting operations, CCs shall submit blasting plan to ESE for approval. Blasting and work-face watering shall be linked to minimize environmental pollution and worker health damage due to fume and toxic gas. Clause 4.6 To avoid blown dust or person injury due to fallen material being hauled, vehicles hauling cement, lime and rubbish among others shall be closed and covered. When construction is carried out in city (town) area or residential area, to avoid air pollution due to secondary blown dust on roads, all construction roads at the Site shall be watered and the quantity and frequency of the watering shall meet ESE’s requirements and be fully recorded. Clause 4.7 Any material susceptible to contributing toxic/harmful smoke or objectionable smell shall not be burned at the Site. Wherever it does be necessary to burn such material, advance agreement shall be obtained from local environmental government agencies and control measures shall be taken with supervision by the ESE.
Chapter 5 Noise and Electromagnetic Radiation Pollution Control
Clause 5.1 Noise Control 1) The noise in camping areas and construction areas without construction operations
shall be in compliance with the standards listed in Attachment 1.
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2) The noise on both sides of highways shall be in compliance with the standard for Category D in the GB3096-93, i.e. LAeq, not more than 70 dB(A) during day hours and not more than 55 dB(A) during night hours. 3) Frequent and occasional abrupt noise shall be in consistency with clause 5 of GB3096-93. 4) Noise at construction sites shall meet the requirements of “Noise Limit for Construction Sites” (GB 12523-90). Any construction equipment expected to have a noise level above the standard shall not be allowed into the Site. 5) Traffic noise shall be in compliance with the standards as stated in the “Noise Standards for Vehicles” (GB1495-79). 6) At work areas exposed to high level noise, the standards for workers protection stipulated in the “Sanitary (Noise) Standards for Industrial Enterprises” (GB12348-90), shall be followed, i.e. noise level is preferably not more than 90 dB(A) and is not allowed to be more than 115 dB(A) when ear plugs are not provided; and preferably not more than 112 dB(A) and not allowed to be more than 120 dB(A) when earplugs are provided. Clause 5.2 To prevent noise nuisance, following regulations shall be followed in camping areas and construction areas without construction operations:
(a) No agency or individual shall be allowed to use any tweeters; (b) Any vehicle entering into the camping areas or residential areas shall not be allowed
to press high-voice or strange-voice horns; (c) Necessary public address or use of sound equipment shall be properly arranged
so as not to affect normal public work, study, and rest. (d) Noise disturbance arising from electric saw and drill operations shall be prevented.
Clause 5.3 Contractors working in the vicinity of urban areas, camps and residential areas shall properly arrange their work time to mitigate or avoid noise and shock disturbance. Construction in the period of 12:00 to 14:00 and of 22:00 pm to 7:00 am is not allowed. In special cases that construction in such period has to be carried out, permit has to be obtained from pertinent government agencies and corresponding measures have to be taken as required. Clause 5.4 All CCs shall try their best to use low noise equipment. For high noise equipment noise isolation room or sound barrier shall be established. Clause 5.5 The ESE may ask CCs to carry out noise monitoring in sensitive locations within their sponsored areas. Clause 5.6 Electromagnetic radiation pollution control shall be carried out in accordance with pertinent national regulations.
Chapter 6 Spoil Materials and Solid Waste Treatment
Clause 6.1 Any spoil material and solid waste due to construction operations shall be moved to designated disposal sites, as required by project design and contract documents in accordance with the “Law of Solid Waste Pollution Prevention and Control” rather than willfully piled at unauthorized locations. Any area for holding such spoil materials and solid wastes (including other materials fields) shall be provided with engineering protection measures, as specified in project design documents, to avoid possible landslide and soil erosion. Clause 6.2 All CCs shall furnish temporary facilities to store their rubbish. The rubbish shall be regularly cleared and moved to designated sites and buried in accordance with pertinent requirements. Clause 6.3 Any solid waste containing lead, chromium, arsenic, mercury, cyanogen, sulphur, copper and pathogens among other harmful and toxic things shall not be allowed to willfully discharge or directly bury into ground. The treatment of such waste shall be reported to ESE and PMO. Permission shall be obtained through PMO from local government agencies and treatment shall be carried out under supervision of ESE.
Chapter 7 Public Health
Clause 7.1 Anti-epidemic Programs
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(a) All CC’s employees shall go to qualified health authorities, accepted by the EMO, for physical examinations before they set foot on the Site. Those who do not pass the examinations shall not be allowed to the Site.
(b) All CCs shall have physical examinations for their employees at least once a year and establish corresponding individual health files. Food staff shall obtain post certificates in accordance with requirements stipulated in the “Law of Food Sanitation” and take their posts with certificates.
(a) The epidemic situation shall be carefully watched by all CCs. Any evidence that an epidemic may be happening shall be immediately reported to local anti-epidemic agency and adequate emergency control measures shall be taken. At the same time, the ESE shall be informed of the epidemic situation
Clause 7.2 Rat Killing All living and working areas and facilities shall be disinfected and cleaned on a regular
basis. Rat density investigation shall be carried out by CCs according to ESE requirements. The density shall be controlled under 3% (rat trace method), otherwise forceful rat killing measures shall be taken to prevent plague, hemorrhagic fever, and leptospirosis from occurring. The poison used to kill rats shall be confirmed by ESE which shall neither cause any risk to human health nor pose any secondary environmental pollution. Clause 7.3 Insect-borne Diseases Control All CCs shall take measures to kill mosquitoes and flies to control malaria, encephalitis, and food pollution diseases. Concentrated mosquito killing and fly killing shall be conducted three times annually (in July, August, September). The poison used to kill mosquitoes and flies shall neither cause any risk to human health nor pose any secondary environmental pollution. Clause 7.4 Water-borne Diseases Control (a) Drinking water shall meet the requirements of the “ Sanitary Supervision and Management for Drinking Water” and the “Sanitary Standards for Drinking
Water” (GB5479-2005). (b) To protect drinking water source, distinct sanitary protection zone shall be identified.
In case of a surface drinking water source, discharge of production and domestic wastewater and stockpile of rubbish shall not be allowed 1,000 m upstream and 100 m downstream of the water-taking place. If the drinking water is from groundwater, the well collar shall be 30-50 cm above the surrounding ground, and well platform and cover shall be provided to prevent water pollution due to invasion of precipitated water.
(c) Concentrated drinking water supply system shall be purified and disinfected with chlorine as required in relevant sanitary standards. CCs shall keep daily records of chlorine consumption, chlorine residue at pipeline terminals(water taps) and operation of the chlorine application system and shall submit a monthly report to the ESE. Any new equipment and pipelines or newly repaired pipelines shall be carefully cleaned, disinfected, inspected and certified before put into use.
(d) Chlorine residual and total coliform bacteria shall be monitored once a month for drinking water quality at representative water taps selected. Also, a full-scale analysis of drinking water shall be carried out once a year. Any problem shall be promptly dealt with as instructed by the ESE.
Clause 7.5 Excreta Management In construction areas with highly concentrated construction workers, the treatment of
excreta and garbage shall follow the standards in Table 1 (Sanitary Standards for High Temperature Compost) of the “Harmless Treatment Standards for Excreta and Garbage”(GB7959-87). Water flush toilets and high efficient septic tanks shall be set up by all CCs in places where they are required. Dry toilets free from fly, maggot and foul, and free from environment pollution are allowed where people are scattered. However, harmless treatment shall be made to the night soils.
Chapter 8 Wild Life and Rare Species Protection
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Clause 8.1 All CCs shall pay due attention to protection of wild life in their construction activities and reduce as much as possible damage to eco-environment. Clause 8.2 Ground clearing during project construction shall be with the designed area. Clause 8.3 All CCs shall enhance public awareness of wild life protection, strengthen the cognition of wild life and eco-environmental protection. Hunting and deforesting is prohibited. Any hunting and deforesting actions shall be promptly stopped and reported to the ESE and relevant agencies for proper treatment. Protection actions shall be immediately taken if a rare species or habitat is discovered or suspicious. Then it shall be reported to pertinent agencies and the ESE for proper treatment. Clause 8.4 Fishing is prohibited in any river in construction areas .
Chapter 9 Land Use, Soil Conservation and Greening
Clause 9.1 All CCs shall save on land use as required in the Project design and Contract Documents. Wherever any land is temporarily used for material stockpilling, transportation and building purposes beyond the design and Contract Documents, the CC shall apply to the PMO who will be responsible for application of land use to local land administrative agencies. Such land shall not be used unless an approval is obtained. Clause 9.2 Topsoil shall be properly reserved to restore or re-plough the land used by temporary Works upon their completion. Clause 9.3 All CCs shall take measures, in construction activities, to prevent erosion and to avoid damage to vegetation and other environmental resources in close compliance with the Project design and contract documents. To this end, it is required that: (1) Land leveling shall be ensured in borrow area to prevent soil erosion when soil and
aggregate borrowing and processing operations are carried out; (2) Engineering or biological measures shall be taken, in light of the local topography and
geology, to prevent landslide, bankcaving or erosion during construction of dike, culvert, and road. No soil, sand or rock should be borrowed from any place subject to landslide or bankcaving.
(3) Any river, gully, canal in construction areas shall not be blocked by CC’s construction disposals to prevent serious erosion.
(4) CCs shall clear their construction sites and do land leveling as required by project plan and design documents when project is completed.
Chapter10 Cultural Relics
Clause 10.1 All CCs shall enhance public awareness of cultural relics protection and promote their employees’ self-consciousness of cultural relics protection and their abilities of preliminarily identifying relics. Clause 10.2 Being property of the Government, any underground or surface cultural relics shall not be grabbed by any organization or individual. Clause 10.3 Whenever any cultural relics(or considered to be cultural relics) are discovered in construction activities, the work shall be immediately suspended for proper measures to be taken to prevent removal of or damage to such. Also, the ESE and cultural relics departments shall be promptly informed and their instructions to cultural relics salvation shall be followed. Clause 10.4 CCs shall report to ESE of their finding and treatment of cultural relics (if the CCs are required to be involved in treatment activities). Clause 10.5 The suspended works shall be restarted only when permission is obtained from pertinent government agency.
Chapter 11 Scenery Area Protection
Clause 11.1 The Scenery area mentioned in the Rules refers to the area which is approved to be protected scenery area by State Council or by provincial government. The range of the area is the area designated. Clause 11.2 While carrying out construction activities in or near scenery area, CCs shall take measures to protect the area according to the requirements of the “Scenery Area Regulations, State Council, 2006” and the “Guizhou Scenery Area Protection Stipulations, Qianfa 31, 1995” and the Rules.
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Clause 11.3 Before entering construction sites, permission shall be obtained by CCs from pertinent government agency. Before commencing, CCs shall submit their construction plan to ESE for approval and training on scenery protection shall be conducted to CC’s construction workers. Clause 11.4 CCs shall control land occupation according to project design. Construction or excavation over designated area is prohibited. Clause 11.5 All construction workers shall work and live in designated areas. No hunting, trees cutting, or fruit collecting, which are not necessary project construction activities, are prohibited. Clause 11.6 No spoil disposal sites, borrow areas, oil storage, and explosive storage are allowed in scenery areas. Clause 11.7 No wastewater is allowed to be discharged in scenery areas. Production wastewater or domestic wastewater shall be reused after treatment. Clause 11.8 CCs shall control their waste gas, dust, road dust, and noise in accordance with ESE’s requirements. Clause 11.9 Disposal of construction spoils and domestic solid wastes in scenery areas is prohibited. Construction spoils and domestic solid wastes shall be properly collected and timely moved to designated places for treatment.
Chapter 12 Utilization of the Rules
Clause 12.1 The Rules shall be put into effect from 1 February 2010. Clause 12.2 All the laws, regulations, standards cited in the Rules are the current national or local ones. If any new national or local laws, regulations, and standard are issued, this Rules shall be promptly updated. Clause 12.3 Guiyang PMO reserves the right to interpret the Rules.