E966Vol. 3

THE PEOPLE'S REPUBLIC OF CHINA

ZHANGYE XIAOGUSHAN HYDROPOWER PROJECTIN GANSU PROVINCE

ENVIRONMENTAL MANAGEMENT ANDMONITORING PLAN

I East China Investigation and Design InstituteZhangye Xiaogushan Hydropower Co. Ltd.

May 2004, Hangzhou

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Fig. 1 Project Geographical Location Map

' - -aL ; uDiversion/power tunnel

Legends. <->v Borrow urea

Water q.olity monitoring section Per net road

- . Hydrohios monitoring section Spoil arne

k Noise onitoring point Diversion tunnel

Air quality aonitoring point Living quarter

- -- - - -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~Scalei:130000

Fig. 2 Plan Layout of Xiaogushan Hydropower Station and Existing Monitoring Point Location Map

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1. Introduction

This Chapter describes the environmental management plan (EMP), which coversthe institutional organizations for environmental management, environmentmonitoring program, and related staff training program.

2. EMP Purpose and Objectives

Both the Environmental Protection Law of the People's Republic of China and therelevant World Bank guideline request to enhance environmental managementduring construction and operation of the project so as to discover potentialenvironmental problems as early as possible, and adopt proper measures toalleviate and minimize adverse impacts to the surroundings and local residents.Xiaogushan hydropower Co. Ltd. (herein after referred to as XHC), has preparedan environment management plan according to the requirement of environmentalassessment set in OP 4.01 of the World Bank. The plan aims at providing basis tothe Project Client, cooperators, contractors and environment protectiondepartments in their respective environmental management and monitoringactivities.

3. Institutional Roles and Responsibilities

The proposed institutional framework for environmental management of theproject is illustrated in Fig. 3 on the next page.

Gansu Provincial . . ........ WB

Financial Bureau Agreemen.. ......... ADB

Agreement

|Zhangyicity govemm' t

1~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 4Submit reportII

t > ~~~~~~Local governm'tsManagement

.~~

|SupervisioDn company |

Contractor

Construcfion site Project affected area

. .

....... .................................................... ............ ..................................................... ,

Contractual & managerial relationship

. ............. Information exchange & submitting report

Fig.3 Institutional Organization of Environmental Management System

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The roles and responsibilities of the various organizations involved inimplementing the EMP are as follows.

(1) Client

The Project Client is the Zhangye Xiaogushan Hydropower Co. Ltd (XHC). XHChas established Environment Protection/Resettlement Office (EP/RO) for theproject. Zhangye City Environmental Bureau leads EP/RO and full-timeenvironmental specialists will be responsible for coordinating the environmentalprotection management activities during project construction and operation.Specifically, their work will involve the following:During the construction phase, EP/RO will be responsible for Ensuring thatapplicable state and provincial environmental laws and regulations, and WorldBank environmental and social safeguard policies are met; Strengthening the datacollection procedures, including setting up an environment databank; Coordinatingwith relevant departments that will be dealing with specific environmental issues;Ensuring that the environmental protection and monitoring/inspection and qualityassurance and control (QA/QC) that make up the core of the EMP, areimplemented effectively.

During the operation phase, Owner is responsible for environmental management,including propagating, carrying out the policy, law, regulation about environmentalprotection of the country; implementing water resources protection work,coordinating the work; taking charge of implementing the funds of environmentalprotection; supervising the environmental monitoring department which acceptscommission and work; continuing doing a good job of the statistical work.(2) Contractor

The FIDIC specifies in Clause 19.1 of its General Conditions that the contractorshall, throughout the execution and completion of the Works and the remedying ofany defects therein "take all reasonable steps to protect the environmental on andoff the Site and to avoid damage or nuisance to persons or to property of thepublic or others resulting from pollution, noise or other causes arising as aconsequence of his methods of operation. Therefore, the contractor is responsiblefor environment protection throughout the execution and completion of the Worksand the remedying of any defects therein.Each of the contractors should assign at least one person to perform the role ofenvironmental supervisor for and within their respective scope of work. Theseenvironmental supervisors should be under the management of the EM/RO, andreport to the EM/RO on matters relating to environment. Individually, thecontractors' environmental supervisors should be responsible for ensuring theirrespective companies to implement environmental protection measures specifiedin the contract documents or the detailed design drawings, and address anyenvironmental problems that occur during construction.(3) Environmental Protection BureauThe Environmental Protection Bureau should be responsible for ensuring that the

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Zhangye Xiaogushan Hydropower Project is constructed and operated strictly

observing the state and provincial environmental policies, regulations, standards

and norms.

(4) Monitoring organization

By environmental monitoring, the conditions and effect of environmental protection

measure implemented in construction and operation phases of the project can be

inspected and followed up, which will be the important basis of environmental

supervision. The environmental monitoring for this project will be divided into three

phases, i.e., in pre-construction stage, construction stage and operation stage.

Zhangye Environment Monitoring Station is responsible for supervision of water,

air and noise as well as aquatic life throughout the three phases; Zhangye Forest

Bureau is responsible for supervision of terrestrial plant during construction and

operation period; Zhangye Water and Soil Conservation Office is responsible for

supervision of water and soil loss during construction and operation period;

Zhangye Health and Disease Control Center is responsible for supervision of

health of local people; Zhangye Fishery Bureau is responsible for supervision of

aquatic life during operation period..

(5) Supervision organization

XHC has hired specialists of Northwest Branch of China Water Conservation and

Hydropower Construction Co. and Supervision Company of Yellow River Basin

Committee under Ministry of Water Resources to undertake the supervision work

for this project. They have established the Xiaogushan Supervision Department,

which will be responsible for environmental supervision during construction period

of the project. The environmental supervision staffs will long-term stay on site for

dynamic management of the environmental protection activities carried out within

the construction site. The main responsibility of them includes inspection and

supervision of the progress, quality and result of environmental protection

measures implemented by contractors and responsible organizations; provision of

advice on improvement of the work to ensure that the construction schemes meet

the requirement of environmental protection; review of the flow chart, construction

method, equipment list and environmental protection indication of environmental

protection measures proposed by the contractors; control, instruction, supervision

and inspection of the construction and operation quality of living and production

wastewater collection and treatment systems and of spoils treatment and

environment management results. They should inform in writing the responsible

organizations about the environmental problems discovered during supervision

and set the deadline for solving and improvement.

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4. Environmental Management and Supervision

(1) Construction Phase[]

Mitigation measures for the construction phase, as shown in Table 1, have been workedout for (a) Dam and under -ground powerhouse, (b) transmission lines, (c) access roads,and (d) construction camp, and the Xiaogushan Supervision Department and relevantorganizations should supervise the implementation of these measures.

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Tablel Environmental Impact Mitigation Measures in Construction PhaseInfluenced region Impact to Environmental Alleviation Measures Responsible Supervision AuthorityEnvironment

AuthorityImpact of production Sand-contained wastewater treated by Zhangye Environmental ProtectionDam and powerhouse wastewater to water sedimentation method, oil-contained Contractor Bureau,quality of Heihe River water by bio-chemical method Xiaogushan Supervision DepartmentImpact of noise to Use low-noise construction equipment;constructors high-noise equipment placed indoors or Zhangye Environmental Protectionprovided with shields; provide protective Contractor Bureau,appliance to constructors; prohibit use of Xiaogushan Supervision Departmentalthorns at living quarter.Local air pollution to Adopt wet method in construction; installconstructor dedusting equipment and tail gas Zhangye Environmental Protectiontreatment equipment; spray water Contractor Bureau,regularly; adopt sealed container for Xiaogushan Supervision Departmenttransportation.Impact of excavation Dividing the water and soil losscausing possible water treatment zones, and corresponding Zhangye Water and Soiland soil losses engineering and planting measures Contractor Conservation Bureau,Xiaogushan Supervision Departmentadopted.impact to natural Protect vegetations and terrestrialconservation zones animals ~Project Client and Zhangye forestry Bureau,

contractor Xiaogushan Supervision Department

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Influenced region Impact to Environmental Alleviation Measures Responsible Supervision Authority

Environment Authority

Occasionally Suspend construction as soon as relics

discovering cultural is found, protect the site and report to Project Client and Xiaogushan Supervision Department

relics the relevant cultural relics protection contractor

authority for treatment.

Damage to vegetation Protect the vegetations and prevent Project Client and Zhangye Forestry Bureau,

due to tower foundation water and soil loss . . .

excavation ~~~~~~~~~~contractor Xiaogushan Supervision Departmentexcavation

Air pollution caused by Adopt wet method in construction; Spray Zhangye Environmental Protection

Transmission Lines construction water at construction site regularly Contractor Bureau,Transmision Lies contructio water t consructionsite reularlyXiaogushan Supervision Department

Occasionally Suspend construction as soon as relics

discovering cultural is found, protect the site and report to the Project Client and Xiaogushan Supervision Department

relics relevant cultural relics protection contractor

authority for treatment.

Noise and air pollution Use low-noise construction equipment; Zhangye Environmental

Roads caused by construction Contractor Protection Bureau,

Spray water at construction site regularly Xiaogushan Supervision Department

Dust pollution caused Regular maintenance and cleaning the Project Client and Zhangye Environmental

by running vehicles ~~~~~~~~~~~~~~Protection Bureau,by running vehicles roads to ensure roads in good conditions contractor Xiaogushan Supervision Department

Spray water at construction site Zhangye EnvironmentalSrelarly; wlanterg atrees construti e Contractor Protection Bureauniregularly; Planting trees along the roads Xiaogushan Supervision Department

7

Influenced region Impact to Environmental Alleviation Measures Responsible Supervision AuthorityEnvironment Authority

Noise pollution caused Prohibit using horns when passing by Contractor and Zhangye Environmentalby running vehicles living quarters, office area and villages Protection Bureau,Project Client Xiaogushan Supervision DepartmentOccasionally Suspend construction as soon as relicsdiscovering cultural is found, protect the site and report to Project Client andrelics the relevant cultural relics protection contractor Xiaogushan Supervision Department

authority for treatment.Reservoir periphery Sewage and rubbish treatmentaffected by domestic

Zhangye Environmental Protectionsewage and rubbish Contractor Bureau,generated by Xiaogushan Supervision DepartmentconstructorsEpidemic disease Regular physical examination foraffecting the health of constructors Project Client and Zhangye Environmental Protectioncontrctrsand local cotatrBureau,constructors and local contractor Xiaogushan Supervision Departmentpeople

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(2) Operations Phase

After the project is put into operation, the flow in an 11.5km long river section downstreamthe dam site will be obviously reduced, which will affect to certain extent the ecologicalenvironment for hydrobios there. Protection work for the downstream hydrobios should bewell performed.

Domestic wastewater and forestation work in the power plant should be dealt carefullywith by the Client.

Environmental impact mitigation measures for the operation and maintenance phase areshown in Table 2.

Table2 Environmental Impact Mitigation Measures in Operation andMaintenance Phase

Influenced Impact to Environmental Respon Supervisionregion Environment Alleviation sible Authority

Measures Authorit

yHydrobios affected by Guarantee a flow ofan 11.5km long 1.6m3/s running in the Zhangye

EnvironmentalDownstream water-reduced water-reduced Project Protectionwater-reduced section formed section in dry season Client Bureau,river section between dam and (from Dec. to Mar. Zhangye

powerhouse next year) to fisherysafeguard hydrobios.

Land acquisition Tree planting Zhangyereduces biomass by managea Project Environmental90.72 tons mantagemen inte Client Protection90.72 tons plant area ~~~Bureau

Power plant Environment affected Treatment of sewage Zhangyeby domestic sewage and re-use, and Project Environmentaland rubbish of the sanitarily burying Client Protectionconstructors rubbish Bureau

5. Environment monitoring plan

(1) Target of Environment monitoring

Environment monitoring is divided into three stages, i.e., pre-construction stage,construction stage and operation stage, which is to fully and timely understand overallpollution trends, understanding the extent and scope of environmental quality changes

9

caused by the construction, dynamic changes in environmental quality during operation

stage, and timely feed back the information to the responsible organizations and provide

scientific basis for environment management of the project.

(2) Organizational institution for environmental monitoring

The environmental monitoring work will be respectively entrusted to Zhangye

environment monitoring station and other relative local departments who are qualified by

the state, including Zhangye City Forestry Bureau, Zhangye City Water and Soil

Conservation Bureau, Sanitation and Disease Preventin Center, Zhangye City Fishery

Bureau, etc. These organizations are well equipped with good technical resource, thus,

can undertake such work entrusted to them.

The environment engineers of the Xiaogushan Supervision Department can carry out

part of the monitoring work, such as measuring the noise levei, flow of production

wastewater and SS indicator, etc. The organizational institution for environmental

monitoring is shown in Fig. 4.

*g w i ADB |

XHCl~~~~~~ Submnit.report lf

l ~...................... ....... ...... *- Zhangyi Envirnm't Protection Bureau

, ~~Management|EP/RO

Supervision company External monitoring

FC onstruction Project affected areas

Contractual and managerial relationship

Information exchange and submitting report

Fig.4 Organizational Institution for Environmental Monitoring

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(3) Content of Environment monitoring

Based on the prediction of the impact to environment, the pollution factors sensitive tothe environment are taken as monitored aspects and the pollution conditions are

continuously monitored in construction and operation phases. The environmental

monitoring program has selected some factors which may impose big influence to the

environment, include noises, air quality, surface water quality, ecological condition,

people's health, water and soil loss. Monitor factors are defined according to the

characteristic pollution factor of the project. Monitoring and analytical methods specified in

the "Technical Specification of Environmental Monitoring" are adopted and the

assessment criteria in the national standard confirmed are followed.

The XHC has prepared a detailed Environmental Monitoring Plan, and Table 3 indicates in

detail the monitoring items, monitoring intervals, monitoring method, monitoring factor,

monitoring equipment to be used and responsible department.

(4) Reporting of monitoring result

According to the WB requirement, XHC summarizes the monitoring results on a monthly

base, and submit a report to the WB. In addition, XHC submit a yearly monitoring report to

the WB, showing the monitoring results.

6. Training plan for environmental protection

In order to enhance the environmental protection sense of the labors engaged in project

construction and improve the ability and skill of the managing personnel, a training plan for

environmental protection has been formulated, which is briefed in Table 4.

7. Work schedule

The work schedule of the environment management plan is detailed in Table 5.

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I

Table 3 Environmental Monitoring Plan

Monitoring Monitoring Responsible EstimatedTime period Monitoring items Location method and factor Frequency of monitoring dsepartmentt cse quip partme 1 OYuan)Follow the zhangye

Environ- mental PH COD EnvironmentQuality BOD P, Oc, al Monitoring

At dam site, and 1 km Standard of StationPre- downstream the Surface Water dissolving For continuous 3 daysconstruction Water quality confluence of (GB3838n oxygen, (2002.11.6n1 2002.11.8) 13stage Xiliushui tributary and 2002) and ammonia 1 time respectively forHeihe main stream Technical nitrogen, total daytime and afternoon

Specification of phosphorus,Environmental sulphate,

Monitoring chlorideFollow the

At 500m upwind the Technical For continuous 5 daysAir power plant and at Specification of For N02o 5 days500m downwind the Environmental S2 NO2 TSP (2002.11 .60t 2002.

power plant Monitoring

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For continuous 5 days

3 points along the noise (2002.11.6ni 2002.

Noise river within project measuring LAeq 11.10), 1 time

site instrument respectively for daytimeand night

Follow the

1 point at Specification of fisho minitype

Hydrobios water-reduced river Hydrobios critter Initial construction stage

section Survey in Inland [I critteraen

Water Areas protozoan n

PH, CODer,

BOD5 , DO,

Follow dissolving Respectively in wet,

During Water At 600m respectively Technical oxygen, mean and dry seasons

Construction quality Surface water u/s the gate dam and Specification of ammonia each year during 3.6

d/s power plant site Environ- mental nitrogen, total construction, 3 days for

Monitoring for phosphorus, each

water sampling; sulphate,

the chloride

Wastewater At wastewater outlet Environmental 2nd and 3 nd year after Supervision

from of sand/gravel Quality SSaThe flow of construction Department 1.2

production processing plant Standard of sewage commencement, one

At wastewater outlet Surface Water time for each two weeks

of coarse aggregate (GB3838E SSniThe flow of and for continuous 3of oare agreate (GB83Li nd orsontnuose

processing plant 2002) and sewage days

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At wastewater outlet Technicalof concrete batching Specification of flo o se

plant EnvironmentalMonitoring for PH, CODcr,surface water BOD 5, DO,and drinking dissolving

At dam site and at water (GB5749 oxygen,Domestic sewage outlet of 0i 85); Referring ammonia 3 2

wastewater living quarters at to the above nitrogen, totalpower plant specifications phosphorus,

for analysis on sulphate,domestic chloride, The

sewage and flow of sewage

production basic projectwastewater. that" drinking

water water One time for the firstDrinking D rces for standard of year of construction 1.4water sources for 3 living life"( CJ 3020 - phase, for continuous 3

quarters 93) requires days

nI CJ3020-93)

Air NO.land 3 living Follow the TSP Peak period of earthSensitive quarter Technical rock excavation (2th 1.9point Dam site Specification of year after construction

Plant power sit Environmental commencement), one

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Pollution Coarse aggregate Monitoring time for two months, for 1.4

source processing plant continuous 5 days

Peak period ofconstruction (3rd year

3 monitoring points Integral-type after construction Zhangye

Construction respectively at living noise commencement), One EnvironmentNoise site quarter, plant power measuring LAeq time in a month, 4 times al moitoring 1.2

and Dayimalong instrument a day, 2 times Station

construction site respectively in daytime

and night

At locations 1 Om, 1 time annually at

20m, 50m from coarse aggregate

sand/gravel processing plant in

aggregate normal operation, and

processing plant; 3 monitoring at different

Pollution representative time period;

Source monitoring points One time in two months

selected along main for main access roads

roads at power plant during peak

site, respectively construction period

20m, 50m,100m from (3rd year after

the road construction

______________________ _________________________________ _________ com m encem ent)encem ent)

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1 point set at residentquarter at Bajiaowan One time each month in

Sensitive Village construction peak 1.0point 1 point set at living period, 4 times aquarter at plant

construction siteOne survey route The place,

along reservoir and According to quantity ofwater-reduced river Environmental vegetation and

Ecological Terrestrial section, and one impact guideline wild animals, Zhangyecondition animal and sampling point for The advantage Forestryplant selected at each hydroelectric seeds, type of Bureau1 000m interval with project vegetation andthe starting point covering 1 time in construction 7.7

selected randomly degree phase

1 point respectively Follow the Water plant,at Dam site, Specification of fish district ZhangyeHydrobios water-reduced river Hydrobios department Environment

section and power Survey in Inlandplant Water Areas characteristic, Stationadvantage kind

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Rainfalls,

rainfall Nov. of third year

carry out intensities, (before rainy season) Zhangye

according to uantit, the and Aug. (in rainy Water andWater and soil At Nos.1, 2,3,4 and5 water and soil quantity the season) and Nov. (after Soil 3.1

loss spoil areas loss protection state of grass rainy season) of 4h year Conservatioand trees grow,

plan . ' after construction n Officewater and soilconservation commencement

measure resultAccording to the

relevaing to the 1 time for average Zhangyerelevant workers before moving Sanitation

People's Physical Constructors and prevention from onto site; 1 time per and Disease 7.0health examination staff in canteen suffering from

the diseases year for staff working in Controlsthendiseass canteens Center

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Surface WaterSurface8Water PH, CODc,, Successive 2 years after2002) and BOD 5, DO, reservoir

At sections set on Technical dissolving impoundment, each ZhangyeHeihe main stream, in Specification of oxygen, time in wet and dry Environment

Water quality front of dam and Environmental ammonia al Monitoring 2.8Operation downstream the tail Monitoring for nitrogen, total seasons each year, Station

and water surface water phosphorus, continuous 5 days tomaintenance and drinking sulphate, sampling.

period water (GB5749 chlorideL 85)

Follow the Water plant,at water-reduced Specification of th Zhangyedepartment In 3t year after ZhnyBiological condition river section and Hydrobios fortmest In ofepower Forestry 7.7

downstream dam site Survey in Inland , . , . BureauWater Areas characteristic,

advantage kindTotal 57.3

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Table 4 Training Plan

Estimated costTraining Plan Participants Training method Contents Duration (1 03 Yuan)

Enactment andexecution of Project Client and Lectures on Learn the specific subjects in the

environment manage- o ntrand Lectures environment management plan and the way 3 days 30ment plan, handling of contractors specific topics of implementation of the plan

dissensions, etc.Implementation Project Client and Broadcasting, Publicize necessity and importance ofprocedures of contractors as well as publicity board, carrying out environmental measures in Frequently 10environmental lectures on construction to enhance the sense of

measures constructors specific topics environmental protection

Lectures onPolicies and specific topics, . .

procedures of Project Client vocational studies Study the relevant policies, laws, statutes and 1 1 3 260environment in high schools, . monthsmanagement study tours in and level of environment management

China and abroad

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Table 5 Time Schedule for Environmental ManagementPlan First year Second year T ird year Others (operation period)Jan. - Mar. Jul. - Oct. - Jan. - Mar. - Jul. - Oct. - Jan. . Mar. - Jul. Oct. - Jan. - Mar. Jul. - Oct.Mar. - Jun. Oct. Dec. Mar. Jun. Oct. Dec. Mar. Jun. Oct. Dec. Mar. -Jun. Oct. Dec.Alleviation

measures for:Water and soilconservationWater environ.

-protection _EcologicprotectionAir environ.

ProtectionAcoustic environ -

protectionDomestic rub- abish treatmentProtection of a

people's health _ .__ _ _Reservoirbottom cleaning

Reservoir waterquality protection

-Environ a .monitoring _= _ _= =_

Training

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Attached Table 1 Mitigation Measure During Construction Phase

| Affecte | Impact to | Mitigation Measures Estimated cost

d dareas | Environment | (x106)

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(1 ) Wastewater in foundation pit and wastewater of sand/gravel processing

As the wastewater of sand/gravel processing contains much SS, natural sedimentation method willbe adopted, as shown below.

Reuse of top water

3 ~~~~Settled sandProduction C IFllant aream

and wastewater Spiral-type water/sand separatorandergrou generated inndergroun constructionTrnpt

d Trphase sansportowerhous sande (2 ) Treatment of wastewater from concrete batching plant 147.37

The batching plant discharges wastewater periodically in small amount, so settling basin of similartype will be built for each mixing system. Wastewater of each mixer is discharged to drainage pond atend of each shift for settling and to the storage pond at end of next shift. After settling for over 6 hrs, thetop clean water is reused for concrete mixing.

( 3 ) Oil-contained wastewater

Oil is separated from water, and water is treated by secondary biochemical method. Oil removalrate are is 30% at regulation pond and primary settling pond and 85% at contact oxidizing pond andsecondary settling pond. After disinfection, water is used for tree planting and vehicle washing.

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Impact of noise The contractor should use low-noise equipment compliant to relevant standard, and noise-control

to constructors devices for heavy noise source.Silent blasting technology should be adopted for blasting.Construction equipment with high noise (air compressors, etc.) should be placed indoor or provided

with shields.Constructors working nearby high-noise equipment should be provided with ear-plug, ear-cover or

noise-isolating helmet.

Impact of ( 1 ) Reduction and control of dust from excavation and blasting

construction-cau Chiseled-cracking blasting, top-cracking blasting, smooth blasting and cushioning blasting are

sed local air preferable to adopt, and wet method adopted for chiseling, drilling and blasting.

pollution to Necessary dust-free method is adopted, such as water spaying in days without rains at plant area, dam

constructors site where excavating and blasting operations are concentrated, adding more ventilation equipment in

underground caverns and providing dust collectors at work faces.

More personal protection appliances are provided to constructors who heavily affected by air pollution.

( 2 ) Reduction and control of dust from sand/gravel processing and concrete batching plant 38.75

Wet method should be adopted where possible for rock crushing of sand/gravel processing system,

and the aggregates should be sufficiently wetted.Concrete batching plant should be provided with dust-removing devices.Water spraying should be made around the various processing systems.

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Engineering and tree-planting measures should be adopted against water and soil losses to form acomprehensive protection system for fundamental and effective control of the water and soil losscaused by project construction.

Based on the topography, existing land use, population density, construction sequence andcharacteristics of possible water and soil loss and project layout, six water and soil loss protection

Constru- ction zones are categorized, i.e., project complex zone, production management zone, diversion tunnel-caused water zone, temporary road zone, material stockpile zone, and transmission line zone.and soil loss inexcavation Water and soil loss protection zones

Area Ground CharacteristicsName of zone hm2) surface of water/soil Key placesloss

Reservoir, projectproject complex 58.24 Waste hill Hydraulic, structures, permanentzone and valley gravity road, spoil area, temp._____________ ~~cam ps

production Waste hill, Admin. area, plant area,managementizone 32.18 open Hydraulic temp. living quarter, onemanagement zone forest land bridgediversion tunnel Diversion tunnel,zone ~~~45.40 Waste hill Hydraulic construction adit, spoilzone________________ area, temp. living quarter

(temporary) road 21.73 Waste hill Hydraulic temp. roads 11km

material stockpile 8.00 River Hydraulic Stockpile, temp. living 256.26zone Shoal quartertransmission line 0.95 Waste land Hydraulic 110kV line 17.8km

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Damage to During construction, education for protection of biological protection should be enhanced to strengthen

natural the environmental protection sense of workers, and hunting rare animals and other wide life are

conservation forbidden, and preying on frogs and birds, etc. are forbidden.

area Education for fire prevent should be enhanced and fire prevention and alarming system established to

insure the safety of forest resources in the area.

Lowering and controlling noise to reduce impact of construction to the wide life. 18.07

Occasional Suspend construction when cultural relics are found, protect the site, and report to relevant authorities

discovering of for treatment.

cultural relics

0.20

Damage to Land leveling and restoring of vegetation

vegetation bytowerfoundation 2.00

excavationTransmi Air pollution Adopt wet method, and spray water periodically

- ssion

line 3.00

Occasional Suspend construction when cultural relics are found, protect the site, and report to relevant authorities

discovering ol for treatment.

cultural relics0.20

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Noise, air Select low-noise construction equipment, spray water at construction sites periodically.pollution causedby construction 5.00

Dust pollution (1) Reduction and control of waste gasescaused by Heavy-duty vehicles produce large amount of tail gases, so tail gas treatment devices should berunning provide to ensure discharging of tail gas after reaching the emission standards.vehicles (2) Reduction and control of dust caused by traffic

The roads should be maintained, repaired and cleaned regularly to keep them in good conditions. 12.00Access Spray water periodically and plant trees along the roads.

road (3) Control dust from materials in transportationCement and fly ash should be transported in sealed containers and the containers should be wellsealed to prevent leakage.

Noise causedby vehicles Vehicles passing by living quarters, office area and Bajiaowan Village should run at a limited speed,passing by and using althorns is forbidden, so as to safeguard the health of the local people and the constructor. 0.10

Occasional Suspend construction when cultural relics are found, protect the site, and report to relevant authoritiesdiscovering o for treatment.cultural relics

0.20

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Pollution to Build pit-type dry toilets at each campsite and treat the domestic sewage by composting method. Thesurroundings by small amount of washing water will be directly doused to ground, which will be evaporated or diffused

sewage and into ground.rubbishes of Rubbishes will be collected at each campsite, where 13-26 sealed receptacles and 1-2 persons forconstructors sanitation management and transporting rubbishes will be arranged at each site. The person

responsible for transporting rubbishes should clean the receptacles and transport the rubbishes to 18.0landfill for treatment.

onstruction camp Impact of Physical examination should be made to each worker moving onto the site, and any persons having

epidemic epidemic disease should be prevented from entering into the site. The workers working in canteendiseases to local should receive physical examination periodically and have the health certificate. Whenever the worker 7.9

people and is found sick, he/she should receive medical treatment or will be arrange for work outside the canteen.constructors Disease prevention and immunity measures should be adopted for the constructors by having medical

drugs.Strengthen the management and supervision over the drinking water sources and foodstuff to preventfood poisoning.

Total509.85

Attached Table 2 Mitigation Measure During Operation Phase

Affected Impact ot environment Estimated costMitigation measures (Xl0 6)Yuan

area (l6Ya

Downstream Hydrobios affected by an 11.5km long Guarantee a flow of 1.6m3/s running in the water-reduced section in dry

Nater-reduced water-reduced section formed betweenNater.reduce water-reduced sectionformedbetweenseason (from Dec. to Mar. next year) to safeguard hydrobios.

river section dam and powerhouse l I _l

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Affected Impact ot environment Estimated costarea Mitigation measures (xI0 6)Yuan

Downstream Hydrobios affected by an 11.5km long Guarantee a flow of 1.6m3/s running in the water-reduced section in drysater-reduced water-reduced section formed betweenriverr section dammnd owerous season (from Dec. to Mar. next year) to safeguard hydrobios.river section dam and powerhouse

Land acquisition reduces biomass by After operation of the plant, the land restoration should be carried out 18. 0Power plant 90.72 tons immediately, and by tree planting, the ecological environment will be

area gradually restored and improved.Environment affected by domestic Treatment of sewage and use the treated water for tree planting, 2.2sewage and rubbish of the constructors Regularly collecting rubbish and sanitarily burying

Total 20. 2

28