;'lAssessment/AnRaly$sis cAS epolbs SW Public Disclosure Authorized 'ttit ,., w' i '' .... ,j ~~~~~~~ReportE0090 t¢if4 ,';' i ,., ..' : ., ,,,,,,* ,,,, ,(,,,1 , . .~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Public Disclosure Authorized :XrX~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~, Public Disclosure Authorized j$^/+t,,'~~~~~~~~~~~~~~~~~~~~~~~~~ii . ' 0 @ t ; i,~~~~~~~~... ... ..7 Public Disclosure Authorized THE ENVIRONMENTALIMPACT ASSESSM:ENTREPORT FOR CHINA SIcHuANPOWER TRANSMISSION PROJECT (Final Report) Document for The World Bank Appraisal BA-OOS-B Sichuan Electric Power Company Chengdu, China Sep., 1994 -. U * t *ilA*E~~~~~~~~~~~-a- $ {..*S;~~~~~~~~ 1-p * i,$-"a . @~~~~~~~ OR t1 1 Cs 1. _ 'fl, Ctv'W$; FIrfrmr:r_ M>,siN rnF.1 -S AoA . E. sH % h a h t O d .. 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S China Sichuan Power Transmission Project (Ertan 500kV Transmission Project) Environmental Impact Assessment CONTENTS 1 Preface 1.1 General 1.2 Scope and the Purpose of EnvironImentImpact Assessment 2 Brief Description of the Project 2.1 Project Owner 2.2 Proposed Project 2.3 Necessity of the Project and Constuction Scale and Schedule 2.4 Location of the Project 2.5 Introduction to the Project 3 Environmental Conditions of the Impacted Region 3.1 Ertan to Zigong Honggou 500 kV Transmission line 3.1. 1 Natural Environment 3.1.2 Ecological Resource 3.1.3 Social Environment 3.1.4 Quality of Life 3.2 500 kV Substations and Switching Station 3.2.1 Zhaojue 500 kV Switching Stadon 3.2.2 Panzhihua 500 kV Substation 3.2.3 Zigong Honggou 500 kV Substation 3.2.4 Chengdu Longwang 500 kV Substation 3.2.5 Chongqing Chenjiaqiao 500 kV Substation 3.2.6 Changshou 500 kV Substation 4 Environmental Impact Forecast, and Control and Treatment Measures 4.1 Transmission Line Impacts on Environment 4.1.1 Impact on the Forest and Economic Trees 4.1.2 Potential Impact on Industrial Facilities and Mineral Resources 4.1.3 Impact on Wildlife and Conservation Areas 4.1.4 Impact on the Surrounding Scenery and Anesthetics 4.1.5 Construction Impacts 4.1.6 Occupation of Farmland 1 4. 1.7 Relocation 4.2 Impactof the Environmenton the TransmissionLine 4.2.1 'UnfavorableGeological Conditions 4.2.2 High Elevations 4.2.3 Heavy Icing 4.2.4 Air Pollution 4.2.5 Forest Fire 4.3 ElectromagneticEnvironmental Compatibility 4.3.1 The Impactsof the Ground Electric Field on the People, Domestic Animal and PreventiveMeasures 4.3.2 The Impactsof the TransmissionLine on the Wired and Radio Facilities 4.3.3 The Impactsof AudibleNoise and PreventiveMeasures 4.4 Envirom-nentalAssessment of 500 kV Substations 4.4.1 Land Occupation,Relocation and Felling of Trces 4.4.2 ConstructionImpacts and Mitigation 4.4.3 OperationalImpacts and MitigationMeasures 4.4.3.1 ElectromagneticField Effects 4.4.3.1.1 The hnpacts on the Wired and Radio CommunicationFacilities 4.4.3.1.2 The Inpacts of the Electromagnetic Field on Human 4.4.3.2 Noise Control 4.4.3.3 Waste Water Treatment 4.4.3.4 GreeningDesign 4.5 EnvirorunmentalImpacts on the Substation s Analysis of Alternatives 5.1 Technical and EconoomicalComparisons of Route Schemes 5.2 Relative ElectromagneticImpact Evaluationand Impactsof the Three AlternativeAligmnents 6 Mitigation Management and Monitoring Plan 6.1 OfficesResponsible for EnvironmentalProtection, Supervisionand Monitoring 6.2 Major MonitoringPrograms 6.2.1 MeteorologicalObservation 6.2.2 EarthquakeForecasting 6.2.3 The ESDD Observations 6.2.4 Health and SanitationMonitoring 6.2.5 Vegetation,Wildlife and Fish Monitoring 6.2.6 ElectromagneticEnvironmental Compatibility Monitoring 2 7 Estimated Expenditures for Environmental Protected Mitigation and Monitoring 7.1 Estimatedinvestment for transmissionline EnvironmentalProtection 7.2 The EstimatedExpenditure for the EnvironmentalProtection Mitigation and Monitoring 7.3 The Investmentfor the SubstationsEnvironmental Protection Mitigation and Monitoring 8 Public Participation 9 Conclusions FIGURES A. Ertan to Zigong500 kV TansmissionLine Corridorsand.Panzhihua, Zigong Honggou 500 kV Substations,Zhaojue 500 kV SwitchingStation Site Location (FIGUREA, DRW. No.50-XO5IK-X6-0 1) B. Zigong-Chengdu,Zigong-Chongqing and Chongqing-Changshou500 kV TransmissionLine Corridors and Longwang,Zigong Honggou,and Chargshou 500 kV Substations Site Location(FIGURE B, DRW. No. 50-X051K-X6-02) ANNEXES A. EcologicalResource (Nature Reserves) B. The Polity and Rules for the Administrationof Forest ReservesIssued by State and Local Government C. CulturalProperty D. SpecialSections and Its ConstructionMethods in Er-Zi 500 kV TransmissionLine Project E. Brief Introductionto the EnvironmentalProtection Mitigation and MonitoringDepartments (SRIEPand SEMC) FIGURES OF ANNEXES 1. DafengdingNature Reserve SketchMap (Figure 1) 3 2. Mt. Luoji Nature Reserve SketchMap (Figure 2) 3. The Special ConstructionMethods SketchMap (Figure3) 4. Cable way Map (Figure4) 5. The Park of Helicopter and Storage Yard for Er-Zi 5OOkVTransmission Lines (Figure5) TABLES IN TEXT 1. The ConstructionScale of the Initial and the Final Stage of the TransformationProjects 2. MinimumVertical Distancesfrom TransmissionLines Overhead 3. The InductiveVoltage PermittedValue of wired Telecommunication Devices 4. The InterferenceProtection Distance of DifferentRadio Station Classes 5. The Informationof Land Taken and Relocationfor SubstationProjects 6. The Economical and TechnicalComparisons of Ertan-Zigong500 kV Transmission Line Alternatives 7. Relative ElectromagneticImpact Evaluation 8. Relative Impactsof the Three AlternativeAligunents 9. The EstimatedInvestment Expense of Er-Zi 5OOkVTransmission Line EnvironmentalImpact 10. The Estimated Expenditureof the EnvironmentalProtection MGPrt*_.ing 4 1 Preface 1.1 General In 1976,a report entitled <<Iransmissionlines and Environment> was submitted by CIGRE No.22 Research Committee. This report pointed out that overhead transmission lines have little effect on the natural environment,because they do not pollute the air, soil or water. Envirormental considerationswere incorporated into the selection process for the best route alignment and preliminary design for the 500 kV Ertan transmission and transformation systems. Considerable efforts were made to avoid populated areas, good farmland, industrial facilities, nature reserves, forests, historic landmarks, and scenic areas. The primary effects of trnmission lines on the environmentare the steel tower which occupy land and affect the landscape, and the felling trees duning construction. In addition, the corona and electromagneticfield caused by transmission lines may have hannful effects on people, domestic animalsand communicationlines. On the other hand, the natural environment can have adverse effects on tras=mission line planning, construction,operation and maintenance.Potential adverse effects include ice and snow sticking to the conductors, unfavorable geological conditions, and earthquakes. Three altemative routes were designed and evaluated, and on the basis of environmentaland other considerations,the middle altemative was chosen (see Figure A, DRW. No.50-XO5lk-X6-01).The chosen route was judged to have the least enviromnental impact of the three. The project complies with applicable environmentalprotection requirements. All the environmentalprotection departnents located along the transmission line route have taken part in the environmentalimpact preventiveresearch. 1.2 Scope and the Purpose of Environmental Impact Assessment The Ertan hydroelectric power station transmission project include 500 kV transmission lines and 500 kV transformation projects. The transmission line projects include Ertan to Honggou substationnear Zigong via Zhaojue (3 x 470 km transmission lines), Honggnu substation to Chenjiaqiao substation near Chongqing(one 162 kan transmissionline), Zigong to Longwangsubstation to the north of Chengdu( 2 x 190 kn transmission lines), Chenjiaqiao substation to Changshou substation near Fuling (one 100 kn transmission line). 500 kV transformationprojects include Panzhffihua,Zigong Honggou,Chengdu Longwang, Chongqing Chenjiaqiaosubstations as well as Zhaojue switching station. Adopted geneal planning for the Ertan 500 kV transmissionproject, and according to the l locatlcondition individual design and constructcvery 500 kV transmissionline and substation. Ertaii to Zigong H-onggou500 kV transmission lincs are the main transmissionlines, which will tTansferthe uower generated in Ertan hydroelectric station to the main cities whtichare locat-d in Sichuan basin. The length of the transmissionlines from Ezlanhydroelectric power station to Zigong Honggou500 kV substation is seventy fivc percent of the total transmissionline length of the project. Between