E999 VOL. 2 PEOPLE'S REPUBLIC OF CHINA NINGBO MUNICIPAL GOVERNMENT THE WORLD BANK Public Disclosure Authorized I ri l l el-. -.. Public Disclosure Authorized NINGBO WATER ENVIRONMENT PROJECT DESIGN REVIEW AND ADVISORY SERVICES Public Disclosure Authorized ENVIRONMENTAL ASSESSMENT VOLUME 2: SUMMARY EA JANUARY 2005 No. 13500117 - R3-Volume 2 Public Disclosure Authorized <;OGREAH _ . U I N ' PEOPLE'S REPUBLIC OF CHINA NINGBO MUNICIPAL SO~GREAH GOVERNMENT _ __U LI A N I S I WORLD BANK NINGBO WATER ENVIRONMENT PROJECT ENVIRONMENTAL ASSESSMENT SUMMARY REPORT [FINAL] IDENTIFICATION No 1350117.R3.2 DATE :12TH JANUARY2005 This document has been produced by the Consortium SOGREAH Consultants/SCE as part of the FASEP Grant (French Government Grant) to Ningbo Municipal Government (Job Number 1350117) This document has been prepared by the project team under the supervision of the Project Director following Quality Assurance Procedures of SOGREAH in compliance with IS09001. APPROVEDBY INDEX DATE AUTHOR CHECKEDBY (PROJECT PURPOSEOF MODIFICATION MANAGER) A First Issue 31/10/2004 JCA JCL GMD B Final Version 12/01/2005 JCA GMD GMD INDEX DISTRIBUTIONLIST CONTACTAoREss I NWEP (Ms Xu Xu, Mr Li Zhibo) PMO, Ningbo 2 The World Bank (Mr. Greg gbrowdera-worldbank.orq Browder) Iaurent.martin(Zdree.or, 3 DREE/M E thomas.clochardadree.orq 4 SOGREAH (Head Office, alain.quequena-soareah.fr SOGREAH China) pmovsasoareah.com.cn 5 SCE (Head Office) gilles.warotasce.fr NINGBO MUNICIPAL GOVERNMENT- THE WORLD BANK NINGBO WATER ENVIRONMENT PROJECT, DESIGN REVIEW AND ADVISORY SERVICES ENVIRONMENTAL ASSESSMENT SUMMARY REPORT TABLE OF CONTENTS 1. INTRODUCTION ........................................................... .1 1.1. BACKGROUND INFORMATION ON THE PROJECT ............................................................ 1 1.2. PURPOSE AND SCOPE OF THIS REPORT ............................................................ 4 1.3. ORGANISATION & LAYOUT OF THE EA REPORT ............................................................ 4 2. PROJECT BACKGROUND & DESCRIPTION ........................................................... 5 2.1. THE NINGBO WATER SUPPLY PROJECT ............................................................ 5 2.1.1. NINGBO WATER SUPPLY COMPANY ............................................................ 5 2.1.2. REGIONAL CONTEXT FOR WATER SUPPLY .............................................................5 2.1.3. NEED FOR THE PROJECT ........................................................... 6 2.1.4. SUMMARY OF PROJECT COMPONENTS ........................................................... 7 2.1.5. DESCRIPTION OF PROJECT COMPONENTS ............................................................ 9 2.1.5.1. RAW WATER INTAKE AND TUNNEL TRANSMISSION ............................................................. 9 2.1.5.2. WATER TREATMENT WORKS ........................................................... 11 2.1.5.3. TRUNK MAINS AND URBAN RING MAIN ............................................................ 13 2.1.6. PLANNING FOR THE PROJECT ........................................................... 14 2.2. THE CIXI WASTEWATER PROJECT ........................................................... 14 2.2.1. THE REGIONAL CONTEXT ............................................................ 14 2.2.2. NEED FOR THE PROJECT ............................................................ 14 2.2.3. SUMMARY OF THE PROPOSED PROJECT ............................................................ 15 2.2.4. DESCRIPTION OF THE PROPOSED PROJECT ........................................................... 17 2.2.4.1. SEWAGE COLLECTION NETWORK ............................................................ 17 2.2.4.2. WASTEWATER TREATMENT PLANTS ...................... ..................................... 17 2.2.5. PLANNING FOR THE PROJECT ............................................................ 20 3. ENVIRONMENTAL BASELINE SITUATION ........................................................... 21 3.1. NINGBO WATER SUPPLY PROJECT AREA ............................................................ 21 3.1.1. REGIONAL PHYSICAL SETTING ........................................................... 21 3.1.1.1. GEOGRAPHY ........................................................... 21 3.1.1.2. CLIMATE ........................................................... 21 3.1.1.3. HYDROLOGY ........................................................... 21 3.1.1.4. WATER QUALITY ........................................................... 24 3.1.1.5. AIR QUALITY ............................................................ 27 3.1.1.6. ACCOUSTIC QUALITY ............................................................ 28 3.1.2. BIOLOGICAL SETTING ........................................................... 28 3.1.2.1. TERRESTRIAL BIODIVERSITY ........................................................... 28 3.1.2.2. AQUATIC BIODIVERSITY ........................................................... 29 3.1.3. SOCIAL SETTING .......................................................... 30 3.1.3.1. POPULATION AND ECONOMY ............................................................ 30 3.1.3.2. WATER SUPPLY AND MUNICIPAL DRAINAGE SITUATION AND PLANNING ............. ................ 31 3.1.3.3. QUALITY OF LIFE ........................................................... 34 3.1.3.4. CULTURAL HERITAGE ............................................................ 34 3.1.3.5. LAND USE ON PROJECT SITES ........................................................... 34 3.2. CIXI WASTEWATER PROJECT AREA ............................................................. 35 3.2.1. REGIONAL PHYSICAL SETTING ............................................................ 35 SOGREAH-JCA- 1350117.R3.2- FINAL PAGEI JANUARY2005 NINGBO MUNICIPAL GOVERNMENT- THE WORLD BANK NINGBO WATER ENVIRONMENT PROJECT, DESIGN REVIEW AND ADVISORY SERVICES ENVIRONMENTAL ASSESSMENT SUMMARY REPORT 3.2.1.1. GEOGRAPHY ..................................... 35 3.2.1.2. CLIMATE ..................................... 35 3.2.1.3. HYDROLOGY ..................................... 36 3.2.1.4. OCEAN HYDROGRAPHIC CHARACTERISTICS ..................................... 39 3.2.1.5. BEACHES CHARACTERISTICS ..................................... 39 3.2.1.6. WATER QUALITY ................................................. : 41 3.2.1.7. AIR QUALITY ................................................ 44 3.2.1.8. ACCOUSTIC QUALITY ................................................ 44 3.2.1.9. SLUDGE QUALITY ................................................ 45 3.2.2. BIOLOGICAL SETTING ................................................ 45 3.2.2.1. TERRESTRIAL BIODIVERSITY ................................................ 45 3.2.2.2. AQUATIC BIODIVERSITY ................................................ 46 3.2.3. SOCIAL SETTING ................................................ 52 3.2.3.1. POPULATION AND ECONOMY ................................................ 52 3.2.3.2. WATER SUPPLY AND MUNICIPAL DRAINAGE PLANNING ................................................ 53 3.2.3.3. QUALITY OF LIFE ................................................ 55 3.2.3.4. CULTURAL HERITAGE ................................................ 55 3.2.3.5. LAND USE ON PROJECT SITES ................................................ 55 4. IMPACT ASSESSMENT AND MITIGATION ................................................ 57 4.1. NINGBO WATER SUPPLY PROJECT COMPONENT ................................................ 57 4.1.1. IMPACT DUE TO PROJECT LOCATION ................................................ 57 4.1.2. IMPACT DURING CONSTRUCTION ................................................ 58 4.1.2.1. IMPACT FROM CONSTRUCTION WASTEWATER .58 4.1.2.2. IMPACT FROM WASTE RESIDUES (EXCAVATED SOIL) .58 4.1.2.3. IMPACT FROM WASTE OF CAMP SITES (DOMESTIC SEWAGE, DOMESTIC REFUSE) . 59 4.1.2.4. IMPACT ON AIR QUALITY .59 4.1.2.5. IMPACT ON NOISE LEVEL .60 4.1.2.6. IMPACT ON NATURAL ENVIRONMENT .61 4.1.2.7. IMPACT ON GROUNDWATER .62 4.1.2.8. IMPACT ON PEOPLE'S HEALTH ................ .......................................... 62 4.1.3. IMPACTS DURING OPERATION ........................................................... 63 4.1.3.1. REGIONAL WATER RESSOURCES ALLOCATION ........................................................... 63 4.1.3.2. JIAOKOU RESERVOIR SOURCE WATER PROTECTION MEASURE ......................................... 64 4.1.3.3. IMPACT ON RESSOURCES MANAGEMENT .......................................................... 65 4.1.3.4. IMPACT ON DOWNSTREAM RIVER HYDROLOGICAL REGIME ............................................... 71 4.1.3.5. IMPACT ON WATER QUALITY INTHE LOWER REACHES ...................................................... 73 4.1.3.6. IMPACT OF SLUDGE DISCHARGE FROM WATER TREATMENT WORK .................. ................. 73 4.1.3.7. IMPACT OF WASTEWATER DISCHARGE OF WATER TREATMENT WORKS ............................. 74 4.1.3.8. IMPACT ON NOISE LEVEL .......................................................... 75 4.1.3.9. IMPACT OF GENERATED WASTEWATER INTHE WATER ENVIRONMENT ............................... 75 4.1.3.10. IMPACT ON TASHAN WEIR ........................................................... 75 4.1.3.11. ENVIRONMENTAL RISK ASSESSMENT FOR CHLORINE LEAKAGE ..................... ................... 76 4.1.4. ENVIRONMENTAL IMPACT ASSESSMENT OF ZHOUGONGZHAI RESERVOIR PROJECT .......................... 77 4.1.4.1. NATURE OF ZHOUGONGZHAI RESERVOIR .......................................................... 77 4.1.4.2. SITUATION OF SURROUNDING