China - PCF Xiaogushan Hydropower Project : environmental assessment (Vol. 3 of 3) : Environmental management and monitoring plan

E966 Vol. 3 THE PEOPLE'S REPUBLIC OF CHINA ZHANGYE XIAOGUSHAN HYDROPOWER PROJECT IN GANSU PROVINCE ENVIRONMENTAL MANAGEMENT AND MONITORING PLAN I East China Investigation and Design Institute Zhangye Xiaogushan Hydropower Co. Ltd. May 2004, Hangzhou FiLE copy9  il  - N.' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~rinstinnur ..si~aj ^ , Tlingan 2 ; br\ I ,L a n , s \ , -Z nl',e Sunan YuguAuto ous Coty * z fri;; ._a. ,, ___ x,, , _ , __ f,, ,, , / , L@nd4u 2 flePtr'h- --x . har,y, 9~ "a !. \ , q i: aXiogushari XHP ' \ t .n t s > sm -- ~~~~~DadoufXa .@nleb \. Legends \. _ t \; D i " j-jf _ *,.cownty *o,t Gr-to _it. -'. I . DZCliOL. on,.village *DIn site 7C s ,\) f/ , , -,;k. -- Hil.ar ) Great m1u )|/) , _ _ ighecy Rivoer Nj _ r4 Road SHeP -a - -,... Co.nty road Foront. ghrnbbr7e Provi-ce boudary Provincal, Prlt lie. r*.t? - :- ) Couoty bou.dary - l' _ .e ) 5e. dioiaio : 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 2  1. Introduction This Chapter describes the environmental management plan (EMP), which covers the institutional organizations for environmental management, environment monitoring program, and related staff training program. 2. EMP Purpose and Objectives Both the Environmental Protection Law of the People's Republic of China and the relevant World Bank guideline request to enhance environmental management during construction and operation of the project so as to discover potential environmental problems as early as possible, and adopt proper measures to alleviate and minimize adverse impacts to the surroundings and local residents. Xiaogushan hydropower Co. Ltd. (herein after referred to as XHC), has prepared an environment management plan according to the requirement of environmental assessment set in OP 4.01 of the World Bank. The plan aims at providing basis to the Project Client, cooperators, contractors and environment protection departments in their respective environmental management and monitoring activities. 3. Institutional Roles and Responsibilities The proposed institutional framework for environmental management of the project is illustrated in Fig. 3 on the next page.  Gansu Provincial . . ........ WB Financial Bureau Agreemen .. ......... ADB Agreement |Zhangyicity govemm' t 1~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 4 Submit reportII t > ~~~~~~Local governm'ts Management .~~ |SupervisioDn company | Contractor Construcfion site Project affected area . . ....... .................................................... ............ ....................................................., Contractual & managerial relationship . ............. Information exchange & submitting report Fig.3 Institutional Organization of Environmental Management System 2  The roles and responsibilities of the various organizations involved in implementing the EMP are as follows. (1) Client The Project Client is the Zhangye Xiaogushan Hydropower Co. Ltd (XHC). XHC has established Environment Protection/Resettlement Office (EP/RO) for the project. Zhangye City Environmental Bureau leads EP/RO and full-time environmental specialists will be responsible for coordinating the environmental protection 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 that applicable state and provincial environmental laws and regulations, and World Bank environmental and social safeguard policies are met; Strengthening the data collection procedures, including setting up an environment databank; Coordinating with relevant departments that will be dealing with specific environmental issues; Ensuring that the environmental protection and monitoring/inspection and quality assurance and control (QA/QC) that make up the core of the EMP, are implemented effectively. During the operation phase, Owner is responsible for environmental management, including propagating, carrying out the policy, law, regulation about environmental protection of the country; implementing water resources protection work, coordinating the work; taking charge of implementing the funds of environmental protection; supervising the environmental monitoring department which accepts commission 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 contractor shall, throughout the execution and completion of the Works and the remedying of any defects therein "take all reasonable steps to protect the environmental on and off the Site and to avoid damage or nuisance to persons or to property of the public or others resulting from pollution, noise or other causes arising as a consequence of his methods of operation. Therefore, the contractor is responsible for environment protection throughout the execution and completion of the Works and the remedying of any defects therein. Each of the contractors should assign at least one person to perform the role of environmental supervisor for and within their respective scope of work. These environmental supervisors should be under the management of the EM/RO, and report to the EM/RO on matters relating to environment. Individually, the contractors' environmental supervisors should be responsible for ensuring their respective companies to implement environmental protection measures specified in the contract documents or the detailed design drawings, and address any environmental problems that occur during construction. (3) Environmental Protection Bureau The Environmental Protection Bureau should be responsible for ensuring that the 3  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. 4  4. Environmental Management and Supervision (1) Construction Phase[] Mitigation measures for the construction phase, as shown in Table 1, have been worked out for (a) Dam and under -ground powerhouse, (b) transmission lines, (c) access roads, and (d) construction camp, and the Xiaogushan Supervision Department and relevant organizations should supervise the implementation of these measures. 5  -  Tablel Environmental Impact Mitigation Measures in Construction Phase Influenced region Impact to Environmental Alleviation Measures Responsible Supervision Authority Environment Authority Impact of production Sand-contained wastewater treated by Zhangye Environmental Protection Dam and powerhouse wastewater to water sedimentation method, oil-contained Contractor Bureau, quality of Heihe River water by bio-chemical method Xiaogushan Supervision Department Impact of noise to Use low-noise construction equipment; constructors high-noise equipment placed indoors or Zhangye Environmental Protection provided with shields; provide protective Contractor Bureau, appliance to constructors; prohibit use of Xiaogushan Supervision Department althorns at living quarter. Local air pollution to Adopt wet method in construction; install constructor dedusting equipment and tail gas Zhangye Environmental Protection treatment equipment; spray water Contractor Bureau, regularly; adopt sealed container for Xiaogushan Supervision Department transportation. Impact of excavation Dividing the water and soil loss causing possible water treatment zones, and corresponding Zhangye Water and Soil and soil losses engineering and planting measures Contractor Conservation Bureau, Xiaogushan Supervision Department adopted. impact to natural Protect vegetations and terrestrial conservation zones animals ~Project Client and Zhangye forestry Bureau, contractor Xiaogushan Supervision Department 6  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 Department excavation 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 Environmental Srelarly; wlanterg atrees construti e Contractor Protection Bureauni regularly; Planting trees along the roads Xiaogushan Supervision Department 7  Influenced region Impact to Environmental Alleviation Measures Responsible Supervision Authority Environment Authority Noise pollution caused Prohibit using horns when passing by Contractor and Zhangye Environmental by running vehicles living quarters, office area and villages Protection Bureau, Project Client Xiaogushan Supervision Department Occasionally Suspend construction as soon as relics discovering cultural is found, protect the site and report to Project Client and relics the relevant cultural relics protection contractor Xiaogushan Supervision Department authority for treatment. Reservoir periphery Sewage and rubbish treatment affected by domestic Zhangye Environmental Protection sewage and rubbish Contractor Bureau, generated by Xiaogushan Supervision Department constructors Epidemic disease Regular physical examination for affecting the health of constructors Project Client and Zhangye Environmental Protection contrctrsand local cotatrBureau, constructors and local contractor Xiaogushan Supervision Department people  i i i i I I  (2) Operations Phase After the project is put into operation, the flow in an 11.5km long river section downstream the dam site will be obviously reduced, which will affect to certain extent the ecological environment for hydrobios there. Protection work for the downstream hydrobios should be well performed. Domestic wastewater and forestation work in the power plant should be dealt carefully with by the Client. Environmental impact mitigation measures for the operation and maintenance phase are shown in Table 2. Table2 Environmental Impact Mitigation Measures in Operation and Maintenance Phase Influenced Impact to Environmental Respon Supervision region Environment Alleviation sible Authority Measures Authorit y Hydrobios affected by Guarantee a flow of an 11.5km long 1.6m3/s running in the Zhangye Environmental Downstream water-reduced water-reduced Project Protection water-reduced section formed section in dry season Client Bureau, river section between dam and (from Dec. to Mar. Zhangye powerhouse next year) to fishery safeguard hydrobios. Land acquisition Tree planting Zhangye reduces biomass by managea Project Environmental 90.72 tons mantagemen inte Client Protection 90.72 tons plant area ~~~Bureau Power plant Environment affected Treatment of sewage Zhangye by domestic sewage and re-use, and Project Environmental and rubbish of the sanitarily burying Client Protection constructors 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 overall pollution 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 | XHC l~~~~~~ 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 10  (3) Content of Environment monitoring Based on the prediction of the impact to environment, the pollution factors sensitive to the 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. 11  I  Table 3 Environmental Monitoring Plan Monitoring Monitoring Responsible Estimated Time period Monitoring items Location method and factor Frequency of monitoring dsepartmentt cs e quip partme 1 OYuan) Follow the zhangye Environ- mental PH COD Environment Quality BOD P, Oc, al Monitoring At dam site, and 1 km Standard of Station Pre- downstream the Surface Water dissolving For continuous 3 days construction Water quality confluence of (GB3838n oxygen, (2002.11.6n1 2002.11.8) 13 stage Xiliushui tributary and 2002) and ammonia 1 time respectively for Heihe main stream Technical nitrogen, total daytime and afternoon Specification of phosphorus, Environmental sulphate, Monitoring chloride Follow the At 500m upwind the Technical For continuous 5 days Air power plant and at Specification of For N02o 5 days 500m downwind the Environmental S2 NO2 TSP (2002.11 .60t 2002. power plant Monitoring 12  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 daytime and 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 3 of oare agreate (GB83Li nd orsontnuose processing plant 2002) and sewage days 13  At wastewater outlet Technical of concrete batching Specification of flo o se plant Environmental Monitoring for PH, CODcr, surface water BOD5, 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, total power plant specifications phosphorus, for analysis on sulphate, domestic chloride, The sewage and flow of sewage production basic project wastewater. that" drinking water water One time for the first Drinking D rces for standard of year of construction 1.4 water 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 earth Sensitive quarter Technical rock excavation (2th 1.9 point Dam site Specification of year after construction Plant power sit Environmental commencement), one 14  Pollution Coarse aggregate Monitoring time for two months, for 1.4 source processing plant continuous 5 days Peak period of construction (3rd year 3 monitoring points Integral-type after construction Zhangye Construction respectively at living noise commencement), One Environment Noise 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) 15  1 point set at resident quarter at Bajiaowan One time each month in Sensitive Village construction peak 1.0 point 1 point set at living period, 4 times a quarter at plant construction site One survey route The place, along reservoir and According to quantity of water-reduced river Environmental vegetation and Ecological Terrestrial section, and one impact guideline wild animals, Zhangye condition animal and sampling point for The advantage Forestry plant selected at each hydroelectric seeds, type of Bureau 1 000m interval with project vegetation and the 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 Zhangye Hydrobios water-reduced river Hydrobios department Environment section and power Survey in Inland plant Water Areas characteristic, Station advantage kind 16  Rainfalls, rainfall Nov. of third year carry out intensities, (before rainy season) Zhangye according to uantit, the and Aug. (in rainy Water and Water 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 Conservatio and trees grow, plan . ' after construction n Office water and soil conservation commencement measure result According to the relevaing to the 1 time for average Zhangye relevant workers before moving Sanitation People's Physical Constructors and prevention from onto site; 1 time per and Disease 7.0 health examination staff in canteen suffering from the diseases year for staff working in Control sthendiseass canteens Center 17  Surface Water Surface8Water PH, CODc,, Successive 2 years after 2002) and BOD5, DO, reservoir At sections set on Technical dissolving impoundment, each Zhangye Heihe main stream, in Specification of oxygen, time in wet and dry Environment Water quality front of dam and Environmental ammonia al Monitoring 2.8 Operation downstream the tail Monitoring for nitrogen, total seasons each year, Station and water surface water phosphorus, continuous 5 days to maintenance and drinking sulphate, sampling. period water (GB5749 chloride L 85) Follow the Water plant, at water-reduced Specification of th Zhangye department In 3t year after Zhny Biological condition river section and Hydrobios fortmest In ofepower Forestry 7.7 downstream dam site Survey in Inland , . , . Bureau Water Areas characteristic, advantage kind Total 57.3 18  Table 4 Training Plan Estimated cost Training Plan Participants Training method Contents Duration (1 03 Yuan) Enactment and execution 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 30 ment plan, handling of contractors specific topics of implementation of the plan dissensions, etc. Implementation Project Client and Broadcasting, Publicize necessity and importance of procedures of contractors as well as publicity board, carrying out environmental measures in Frequently 10 environmental lectures on construction to enhance the sense of measures constructors specific topics environmental protection Lectures on Policies and specific topics, . . procedures of Project Client vocational studies Study the relevant policies, laws, statutes and 1 1 3 260 environment in high schools, . months management study tours in and level of environment management China and abroad 19  Table 5 Time Schedule for Environmental Management Plan 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 soil conservation Water environ. - protection _ Ecologic protection Air environ. Protection Acoustic environ - protection Domestic rub- a bish treatment Protection of a people's health _ .__ _ _ Reservoir bottom cleaning Reservoir water quality protection - Environ a . monitoring _= _ _= =_ Training 20  Attached Table 1 Mitigation Measure During Construction Phase | Affecte | Impact to | Mitigation Measures Estimated cost d dareas | Environment | (x106) 21  (1 ) Wastewater in foundation pit and wastewater of sand/gravel processing As the wastewater of sand/gravel processing contains much SS, natural sedimentation method will be adopted, as shown below. Reuse of top water 3 ~~~~Settled sand Production C IF llant aream and wastewater Spiral-type water/sand separator andergrou generated in ndergroun constructionTrnpt d Trphase sansport owerhous sand e (2 ) Treatment of wastewater from concrete batching plant 147.37 The batching plant discharges wastewater periodically in small amount, so settling basin of similar type will be built for each mixing system. Wastewater of each mixer is discharged to drainage pond at end of each shift for settling and to the storage pond at end of next shift. After settling for over 6 hrs, the top 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 removal rate are is 30% at regulation pond and primary settling pond and 85% at contact oxidizing pond and secondary settling pond. After disinfection, water is used for tree planting and vehicle washing. 22  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. 23  Engineering and tree-planting measures should be adopted against water and soil losses to form a comprehensive protection system for fundamental and effective control of the water and soil loss caused by project construction. Based on the topography, existing land use, population density, construction sequence and characteristics 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 in excavation Water and soil loss protection zones Area Ground Characteristics Name of zone hm2) surface of water/soil Key places loss Reservoir, project project complex 58.24 Waste hill Hydraulic, structures, permanent zone and valley gravity road, spoil area, temp. _____________ ~~cam ps production Waste hill, Admin. area, plant area, managementizone 32.18 open Hydraulic temp. living quarter, one management zone forest land bridge diversion tunnel Diversion tunnel, zone ~~~45.40 Waste hill Hydraulic construction adit, spoil zone________________ area, temp. living quarter (temporary) road 21.73 Waste hill Hydraulic temp. roads 11km material stockpile 8.00 River Hydraulic Stockpile, temp. living 256.26 zone Shoal quarter transmission line 0.95 Waste land Hydraulic 110kV line 17.8km 24  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 by tower foundation 2.00 excavation Transmi 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 relics 0.20 25  Noise, air Select low-noise construction equipment, spray water at construction sites periodically. pollution caused by construction 5.00 Dust pollution (1) Reduction and control of waste gases caused by Heavy-duty vehicles produce large amount of tail gases, so tail gas treatment devices should be running 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. 12.00 Access Spray water periodically and plant trees along the roads. road (3) Control dust from materials in transportation Cement and fly ash should be transported in sealed containers and the containers should be well sealed to prevent leakage. Noise caused by 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 authorities discovering o for treatment. cultural relics 0.20 26  Pollution to Build pit-type dry toilets at each campsite and treat the domestic sewage by composting method. The surroundings 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 for constructors 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 18.0 landfill for treatment. onstructio n 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 canteen diseases 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 prevent food poisoning. Total 509.85 Attached Table 2 Mitigation Measure During Operation Phase Affected Impact ot environment Estimated cost Mitigation measures (Xl06)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 between Nater.reduce water-reduced sectionformedbetweenseason (from Dec. to Mar. next year) to safeguard hydrobios. river section dam and powerhouse l I _l 27  Affected Impact ot environment Estimated cost area Mitigation measures (xI06)Yuan Downstream Hydrobios affected by an 11.5km long Guarantee a flow of 1.6m3/s running in the water-reduced section in dry sater-reduced water-reduced section formed between riverr 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. 0 Power 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, 2.2 sewage and rubbish of the constructors Regularly collecting rubbish and sanitarily burying Total 20. 2 28