China - Sichuan Urban Environment Project - environmental assessment (Vol. 1 of 3)

E-246 VOL. 1 Sichuan Urban Environment Project (SUEP) ENVIRONMENTAL ASSESSMENT Volume 1 Executive Summary December 1998 Sichuan Research and Monitoring Institute of Environmental Protection  SICHUAN URBAN ENVIRONMENT PROJECT (SUEP) ENVIRONMENTAL ASSESSMENT Volume 1 Executive Summary DECEMBER 1998 This report has been prepared by Sichuan Research and Monitoring Institute of Environmental Protection With the Assistance of Mott MacDonald Limited, Cambridge, U.K.  SICHUAN IJRRAN ENVIRONN1ENT PROJECT ENVIRONNMENTAL ASSESSNMENT Volume I - ExectiIive Sumimar" CONTENTS VOLUME 1 - Executive Summary VOLUME 2 - Main Report 1.0 INTRODUCTION 1.1 SUEP Project and Components 1.1.1 Sichuan Province Overview 1.1.2 Provincial Government 1.1.3 SUEP Project and World Bank 1.2 Description of the Study Area 1.2.1 Economy of Sichuan Province 1.2.2 Regional Water Resources 1.2.3 Domestic Water Supplies and Utilisation 1.2.4 Sewerage Systems 1.2.5 Solid Waste and Sludge Disposal Systems in Place 1.2.6 Population, Water Supply, Wastewater and MSW Projections 1.3 Policy, Legal and Administrative Framework 1.4 Scope and Standards of Environmental Assessment 1.5 Need for the Project 1.6 Assessment Objectives, Criteria, Parameters 1.7 EA Preparation Requirements 1.8 SRIEP and Participants 1.9 EA Organisation 2.0 Description of the Proposed Project 2.1 Overview of SUEP Phase I Project Components 2.2 Project Formulation and Development 2.X.1 COWI/DHI Project Inventories and Ranking 2.2.2 World Bank Review. Mav 1997 2.2.3 World Bank Final Project Selection. October 1997/March 1998 2.2.4 Ongoing Activities 2.2.5 Future Phases of SUEP 2.3 Details of SUEP Phase I Component Projects 2.3.1 Leshan Number 4 WTW  SICHUAN URBAN ENVIRONNIENT PROJECT ENVIRONMENTAL ASSESSMENT Volume I - Executive Summan 2.3.2 Zigong, Min River Intake and Yuan Ba Chang WTW 2.3.3 Luzhou Beijiao WTW 2.3.4 Luzhou Daxikou WTW 2.3.5 Chengdu Nr 2 WwTW (at Long Quan) 2.3.6 Leshan Wastewater Collection and Preliminarv Treatment System 2.3.7 Deyang WwTW 2.3.8 Zigong WwTW 2.3.9 Leshan Municipal Solid Waste Project 2.3.10 Urban Management Information Systems (UMIS) 2.3.11 Cultural Heritage 2.3.12 Technical Assistance 2.4 Cost Estimates for Proposed Projects 2.4.1 General 2.4.2 Capital Costs 2.4.3 Operating Costs 2.5 Implementation Schedule 3.0 Description of the Environment (Provincial Overview) 3.1 Physical Environment 3. I. Geology 3.1.2 Topography 3.1.3 Soils 3.1.4 Climate and Meteorology 3.1.5 Air Quality 3.1.6 Noise 3.1.7 Surface and Groundwater Hydrology 3.2 Biological Environment 3.2.1 Flora 3.2.2 Fauna 3.2.3 Special Issues 3.3 Socio-cultural Environment 3.3.1 Project Area Overview 3.3.2 Social and Public Health Issues 3.3.3 Finance and Economics 3.3.4 Institutional Issues 3.4 Area of Special Designation 3.4.1 Endangered Flora and Fauna 3.4.2 Historic and Cultural Sites 3.4.3 Parklands or Other Special Sites 3.4.4 Watershed Protection Zones  SiCHLUAN IJRBAN ENVIRONiMENT PROJECT ENVIRONMENTAL ASSFSSMEFNT Voilume I - Executive Summarv 4.0 Environmental Management and Problems 4.1 Water and Environmental Institutional Arrangements 4.1.1 National Level 4.1.2 Provincial Level 4.1.3 City and Countrv Level 4.2 Attainment of Goals. Standards. Regulations 4.2.1 Surface Water Quality 4.2.2 Groundwater Quality 4.2.3 Water Supplies, Treatment and Distribution 4.2.4 Wastewater Collection and Septic Tanks 4.2.5 Wastewater Discharges - Domestic 4.2.6 Wastewater Discharges - Industrial and Other 4.2.7 Industrial Discharges to Sewerage Systems 4.2.8 Sludge Disposal for Septic Tanks and WwTW 4.2.9 Solid Waste Collection and Disposal 4.2.10 Landfill and Solid Waste Treatment Designs 4.2.11 Industrial Solid Wastes 4.2.12 Health and Safety 4.3 River Systems 4.3.1 Min River Basin Monitoring Data 4.3.2 Tuo River Basin Monitoring Data 4.3.3 Yangtze River Basin Monitoring Data 4.3.4 Urban Pollution Impacts Assessment 4.3.5 Summary 5.0 Determination of the Potential Impacts of the Proposed Project 5. 1 Positive Impacts (Local, Basin) 5.1.1 Leshan Nr 4 WTW 5.1.2 Zigon2 Min River Diversion and WTW 5.1.3 Luzhou Beijiao WTW 5.1.4 Luzhou Daxikou WTW 5.1.5 Chengdu Nr 2 WwTW 5.1.6 Leshan Wastewater Collection and Preliminarv Treatment Svstem 5.1.7 Deyang WwTW 5.1.8 Ziaong WwTW 5.1.9 Leshan Municipal Solid Waste Project 5.1.10 Summarv of Phase I Positive Impacts 5.2 Potential Short Term Construction Impacts 5.2.1 Leshan Nr 4 WTW 5.2.2 Zigong Min River Diversion and WTW 5.2.3 Luzhou Beijiao WTW 5.2.4 Luzhou Daxikou WTW 5.2.5 Chengdu Nr 2 WwTW 41367 EA.EXECSUM iii DECEMBER  SICEIUA.\N URBAN ENVIRONMENT PROJECT ENVIRONMENTAL ASSESSMENT Voiume I - EXecLtrive Stimmar 5.2.6 Leshan Wastewater Collection and Preliminary Treatment System 5.2.7 Deyang WwTW 5.2.8 Zigong WwTW 5.2.9 Leshan Municipal Solid Waste Project 5.2.10 Summarv of Phase I Construction Impacts 5.3 Potential Operational Phase Impacts 5.3.1 Leshan Nr 4 WTW 5.3.2 Zigong Min River Diversion and WTW 5.3.3 Luzhou Beijiao WTW 5.3.4 Luzhou Daxikou WTW 5.3.5 Chengdu Nr 2 WwTW 5.3.6 Leshan Wastewater Collection and Preliminary Treatment System 5.3.7 Deyang WwTW 5.3.8 Zigong WwTW 5.3.9 Leshan Municipal Solid Waste Proiect 5.3.10 Summary of Potential Operational Phase Impacts 5.4 Cumulative SUEP Phase I Impacts 5.4.1 Related SUEP Components 5.4.2 Other Environmental Improvement Programs 6.0 Analysis of Alternatives to the Proposed Project 6.1 Altematives Reviewed in Project Development 6.1.1 Leshan Number 4 WTW 6.1.2 Zigong Min River Diversion and WTW 6.1.3 Luzhou Beijiao WTW 6.1.4 Luzhou Daxikou WTW 6.1.5 Chengdu Nr 2 WwTW 6.1.6 Leshan Wastewater Collection and Preliminarv Treatment System 6.1.7 Devang WwTW 6.1.8 Zig-ong WwTW 6.1.9 Leshan Municipal Solid Waste Project 6.2 No Project Alternatives 6.3 Phase I SUEP Projects Connection to Ongoing Activities and Future SUEP Projects 7.0 Mitigation and Monitoring Management Plans 7.1 Mitization and Monitoring Program 7.1.1 Construction Phase - WTW 7.1.2 Construction Phase - WwTW 7.1.3 Construction Phase - MSW 7.1.4 Operation Phase - WTW 7.1.5 . Operation Phase - WwTW 7.1.6 Operation Phase - MSW 7.2 Institutional Responsibilities 41367.EA.EXECSUM iv DECEMBER  SICHUAN I IRBAN ENVIRONNIENT PROJECT ENVIRONMENTAL ASSESSMIENT Volume I - Executiv'e Summary 7.3 Equipment and Training Requirements 7.4 Impacts and Costs of Plan 8.0 Public Process and EA Public Participation 8.1 Meetings with Public Officials in Developing Project and EA 8.2 Survev of Public Officials and Citizens in Project Area 8.3 Summary of Public Input 9.0 Summary and Conculsions 9.1 Water Supply Projects 9.2 Wastewater Collection and Treatment Facilities 9.3 Municipal Solid Waste Projects 9.4 Conclusions and Recommendations VOLUME 3 - APPENDICES Appendix A - Urban Pollution Impact Assessment (MM) Appendix B - Approaches to Water and Wastewater Treatment Appendix C - Appendix D - Relevant National and International Standards Appendix E - .. .. .. .... ... . .~~~~~~~~~~~~~~~,trf m  SlCI IlUAN UIRBAN ENVIRONMENT PROJECT ENVIRONMEIFNTAL ASSESSMENT VOILuMe - Executive Summarv LIST OF TABLES Table 1.1 Key Issues. SUEP Major Issues Report of March 1997 (COWI/DHI) Table 1.2 Hydrological Characteristics of Selected River Basins Table 1.3 Total Water Requirements. Leshan Table 1.4 Total Water Requirements. Zigong Table 1.5 Median Maximum Water Requirements, Luzhou Beijiao Table 1.6 Domestic Water Demand Forecasts. Luzhou Daxikou Table 1.7. Projection of Wastewater in 3rd Drainage Area, Chengdu Table 1.8 Total Wastewater to Interceptor. Leshan Table 1.9 Projection of Wastewater from Western Drainage Area, Deyang Table 1.10 Total Wastewater Entering Interceptor, Zigong Table 1.11 MSW Forecast. Leshan Tabie 1.12 SRIEP - Members Participating the EA work of the SUEP Project Table 2.1 SUEP Phase I Project Components Table 2.2 Ranking of Municipal Wastewater Schemes (COWI/DHI) Table 2.3 Ranking of Municipal Water Supply Schemes (COWI/DHI) Table 2.4 Ranking of Municipal Solid Waste Schemes (COWI/DHI) Table 2.5 SUEP Phase I Construction Schedule (typical) Table 2.6 World Bank Water Resources Management Principles and Issues (COWI/DHI) Table 2.7 World Bank Decisions of May 1997 Important to EA Table 2.8 Summarv of Proposed Phase I Water Supply Schemes Table 2.9 Summary Details Wastewater Works Table 2.10 Cost Estimates for Water Supply Schemes Table 2.11 Cost Estimates for Wastewater Schemes Table 2.12 MSW Facilities and their Costs Table 2.13 SUEP implementation program Table 3.1 The Incidence of Water-borne and other Diseases in the Project Cities Table 3.2 Summarv of Draft Resettlement Action Plan Table 3.3 Economic and Financial Indicators for Water Supplv Schemes Table 3.4 Economic and Financial Indicators for Wastewater Schemes Table 3.5 Economic and Financial Indicators. MSW Table 4.1 National Water and Environmental Laws Important to SUEP (COWI/DHI) Table 4.2 Environmental Standards for Surface Water, National Standard GB 3838-88. Issued I June 1988 Table 4.3 Length of river sections satisfving the Class III water quality objective by 2020 after Strategy implementation Table 4.4 Chengdu Main Water Quality Monitoring Values (average in mg/I) Table 4.5 Monitorint- Cross-sections of Rivers. Chengdu Table 4.6 Statistic Data of Water Qualitv Monitoring, Chengdu Table 4.7 Water Quality Monitoring Summarv. Chengdu Table 4.8 Monitoring Results of Surface Water. Leshan Table 4.9 Thle Quality of Water Sources in Leshan Table 4. 10 Raw Water Monitoring Results at Ganyan Cross-section of Qingyi River (for Leshan Nr 3 Water Treatment Works) ( 1991 -1996) Table 4.11 Average Water Quality of the Min River. 1990-91 Table 4.12 Monitoring Results at the Intake of the Min River. (May 1996) Table 4.13 Monitoring Cross-sections of the Mianyuan River 41367.EA.EXECSUM vi DECEMBER  SIClttA.N LIRBAN ENVIRONNIENT PROJECT ENVIRONMENTAL ASSESSiENT Volume I - Exectutive Summarv Table 4.14 Monitoring Results of Assessment Section of Mianyuan River Table 4.15 Zigong- Fuxi River Monitoring Stations Table 4.16 Water Quality Monitoring Results of the Fuxi River in 1996 Table 4.17 Water Quality Assessment Statistics in 1996 in Luzhou Water Company Table 4. 18 Raw Water Qualitv Survey Statistics Report - Yangtze. Luzhou Anfu Table 4.19 Selected Water Quality Parameters in Yangtze River and the FrequencY the National Standard is Exceeded Table 4.20 Expected Changes in Water Qualitv in Sichuan Rivers and Impact of Proposed Wastewater Schemes Based on an Analysis of MIKEI 1 Runs. Table 4.21 Ranked Cost Benefit for All Schemes and Combinations Involving Wastewater Treatment Table 4.22 Ranked Benefit Cost for Municipal Wastewater Collection and Treatment Schemes Table 7.1 Raw Water Suppiv Sources. Intake Structures Table 7.2 Raw Water Pumping and Transmission Table 7.3 Water Treatment Works Site Table 7.4 Treated Water Pumping and Water Storage Table 7.5 Distribution System and Water Consumers Table 7.6 Construction Debris Table 7.7 Wastewater Transmission and Pumping Table 7.8 Wastewater Treatment Plant Table 7.9 Sludge Management System Table 7.10 Construction Debris Disposal Table 7.11 Collection and Transfer Systems Table 7.12 Sanitarv Landfill Table 7.13 Leachate Handling. Existing Facilitr Table 7.14 Construction Debris Disposal Table 7.15 Raw Water Supply Source. Intake Structure Table 7. 16 Raw Water Pumping and Transmission Table 7.17 Water Treatment Works Site. Including Pumping Station Table 7. 18 Residuals Disposal Table 7.19 Distribution Svstem and Water Consumers Table 7.20 Solid Waste. Septage. and Direct Discharge Sources Table 7.21 Raw Sewage. Domestic and Industrial Sources to Sewer Svstems Table 7.22 Raw Sewage Overflows. Various Locations Table 7.23 Wastewater Transmission and Pumping Table 7.4 Wastewater Treatment Plant Table 7.25 Sludge Mana2ement Svstem Table 7.26 Receiving Water Issues Table 7.27 Wastewater Reuse and Downstream Users Table 7.28 Solid Waste Sources Table 7.29 Collection and Transfer Svstems Table 7.30 Street Washing and Sweeping Equipment Table 7.3 1 Sanitary Landfills Table 7.32 Leachate Treatment Plants Table 7.33 Local and Downstream Water Users Table 7.34 SRIEP Environmental Monitoring Costs Table 8.1 SRIEP Public Opinion Survey Form Table 8.2 Summary of Public Responses, SRJEP Survey 13167 EA.EXECSUM vii DECEMBER  SICHUAN URBAN ENVIRONNIENT PROJECT ENVIRONMENL AIA.\SSESSMENT Volume I - Fxecutive Summanr LIST OF FIGURES Figure 1.1 Sichuan Province Location Figure 1.2 Upper Yangtze Basin Main Rivers Figure 1.3 Project Citv Figure 1:4 Chengdu Plain Rivers & Channels Figure 1.5 Min River System - Present Figure 1.6 Tuo River Svstem - Present Figure 1.7 Yangtze River System - 1993-4, Spring Figure 1.8 Yangtze Nutrient loads & Algae Problem Potential Figure 1.9 Sources of Pollution - Whole Yangtze Basin Figure 2.1 Leshan Water Supply Existing Distribution Network Figure 2.2 Leshan Water Supply Project Schematic Figure 2.3 Project Location and Urban Water Distribution Network Figure 2.4 Zigong Water Supply Project Schematic Figure 2.5 Location of the Beijiao Project Figure 2.6 Luzhou Beijiao Water Supply Project Schematic Figure 2.7 Location of the Daxikou Project Figure 2.8 Luzhou Daxikou Water Supply Project Schematic Figure 2.9 Chengdu Drainage Areas Figure 2.10 Chengdu Interceptor Sewer Route Schematic Figure 2.11 Leshan Wastewater Plan of Interceptor Sewers Figure 2.12 Leshan Interceptor Sewer Route Schematic Figure 2.13 Devang Wastewater Existing Seweraee Figure 2.14 Devang Wastewater Project Schematic Figure 2.15 Zigong Drainage Areas Figure 2.16 Zigong Wastewater Project Schematic Figure 2.17 Location of Leshan Landfill Site Figure 2.18 Leshan Municipal Solid Waste General Layout Figure 2.19 Leshan Municipal Solid Waste Project Schematic Figure 4.1 EPB organisation chart. Figure 4.2 Contribution of different Strategy Component to Improvement in Basin Pollution Index for the Upper Yangtze Basin (COWI/DHI) 41 367.EA.EXECSUM viii DECEMBER  SICI-ILIAN URB \N ENVIRONMENT PROJECT ENVIRONNIENTAI ..SSESSMIENT vuiurn I - E'ecuttve Summary LIST OF ABBREVIATIONS AIC Average Incremental Cost BOD Biochemical Oxygen Demand BMP Best Management Practice COD Chemical Oxvyen Demand dBA Decibels (noise level) DFID Department for International Development EA Environmental Assessment EIRR Economic Internal Rate of Return EPB Environment Protection Bureau EPO Environment Protection Officers ERI Enviror,mental Research Institute FIRR Financial Internal Rate of Return GDP Gross Domestic Product GVIO Gross Value of Industrial Output Ha Hectare hh Household IMR Infant Mortalitv Rate m3/s cubic metres per second m3/d cubic metres per day m3/h cubic metre per hour M&E mechanical and electrical Mi/d mega litres per day MM Mott MacDonald MSW municipal solid waste OVI Objectively Verifiable Indicators PAC Polv-aluminium Chloride PAM Polv-acrnlamide PC Project Component RAP Resettlement Action Plan SPG Sichuan Provincial Government SUEPO Sichuan Urban Environment Project Office SWMEDRIC South West Municipal Engineering Design and Research Institute of China ToR Terms of Reference t/a tonnes per annum t/d tonnes per dav TVE Township and Village Enterprises WB World Bank WTP Willingness to Pay WTW Water Treatment Works WwTW Wastewater Treatment Works WYR Western Yangtze Region  SICHUJAN URIRAN ENVIRONMENT PROJECT ENVIRONNIENTAI. ASSESSMENT Volume I - Executive Summarv VOLUME 3 - Appendices Appendix A. Urban Pollution Impacts Assessment, Mott MacDonald, 9/97. Appendix B. Approaches to Water and Wastewater Treatment B- I. Water Treatment B-2. Wastewater Treatment Appendix C. Pre-Appraisal Summary Report, 3/98. Appendix D. Relevant National and Provincial Regulations and Standards (--r'cryertr>1 \ crextf)rD 009  SICI IUAN I [Ri AN FNVIRONMENT PROJECT ENVIRONMIENTAL ASSESSNIENT V0,011t:m I - Executive Summary EXECUTIVE SUMMARY The Environmental Assessment of the Sichuan Urban Environment Project This report provides a summarv of the Environmental Assessment Report - Main Report and Appendices. This latter report covers the assessment of the environment impacts of the project components to be developed under the Sichuan Urban Environment Project. It has been prepared by the Sichuan Research and Monitoring Institute of Environment Protection with the assistance of Mott MacDonald, consulting engineers. Sichuan Province Overview Sichuan Province. located in the south-west of China, is the third most populous province with over 82 million people over an area of about 385.000 km2. The province had been the most populated province until the spring of 1997 when Chongqing and the surrounding area were given provincial status. Sichuan Province is land-locked. approximatelv 1500 km from the sea and shares its borders with 8 provinces - Qinghai, Gansu and Shaanxi to the north, Hubei and Hunan to the east. Guizhou and Yunnan to the south and Xizang (Tibet) to the west. The topographv of Sichuan Province consists mainly of mountains and plateaux and can be geographicaliv divided into the eastern basin area. the western plateau and the mountain area. About 95% of the population lives in the basin area. The capital of Sichuan Province is Chengdu, located in the portion of the basin area known as the Chengdu plain, often referred to as "the land of plentv". Chengdu plain's level terrain, fertile land, plentiful rainfall and temperate climate combined with established irrigation svstems such as the Dujiangvan Irrigation Scheme all contribute to the area's agricultural abundance. The western half of the province is dominated by the Himalavan Mountains. with an average altitude of 3.000 m. which peaks at 7,500 m at the Gonga Shan massif located in the southwestern area of the province. Although the Sichuan Province is surrounded by various mountain svstems. the project cities tend to be located along vwaterwavs in rolling terrain. The Chengdu plain watercourses are fed bv the Dujiangvan diversion works on the Min River at about elevation 700m. The main agricultural areas in the upper plain are from 400 to 600m elevation. All project cities are located in the semi-tropical monsoon clinate zone. and its climate is mild and wet. There is oniv a minor variation in climate from the southern city of Luzhou to the northern cities of Chengdu and Devang. SUEP Project and Components In order to fully solve the pollution problems in Sichuan province major works will need to be developed for most of the cities in the province. It is not possible to finance all necessaryv works in one step. It is therefore foreseen that the SUEP will continue over manv years with several phases. The present project is seen therefore to be Phase I of this longer-term programme. In accordance wvith the national World Bank (WB) policies and priorities, the Sichuan Provincial Government (SPG) has requested WB and bi-lateral donor support for the Sichuan Urban Environment Project (SUEP). The UK Government agreed to provide a grant. administered bv the Department for International Development (DFID), to cover the costs of consultancy services. equipment and training required to assist the SPG in the preparation of the SUEP Phase I to meet WB requirements. Support for improving environmental management is one of the main objectives of the 41367.EA.EXECSIJM ES- I DECEMBER 1998  SICHUAN URBAN ENVIRONMENT PROJECT ENVIRONMENTAL ASSESSiMIENT Volume I - Executive Summarv World Bank's and DFID's Country Assistance Strategy (CAS) for China. Managing the impact on China's urban environment of rapid urbanisation and economic growth is a focus of the CAS. SUEP is also a key element of China's Agenda 21 programme. The SUEP objectives are to enable municipalities to recover from past environmental degradation of water and land resources and to put in place policies. practices and institutions to facilitate and sustain the cost of effective provision of essential services. The location of the Sichuan Province and SUEP cities in upstream areas tributary to the Three Gorges Scheme (TGS) on the Yangtze River was also a key determinant of project priority. The overall objective of the SUEP is therefore: . To allow environmentallv sustainable growth in Sichuan Province. Description of the Phase 1 Studv Area The -studv area- considered for the Phase I projects and Environmental Assessment (EA) is the Min and Tuo river basins, including the city of Luzhou located at the junction of the Tuo and the Yangtze rivers. and the small portion of the Yangtze river upstream and downstream of Luzhou. The study area does not include other tributarv river basins in Sichuan Province. the Chongqing provincial city, or areas further downstream on the Yangtze including the Three Gorges Dam site. Regional Water Resources The eastern half of the Sichuan Province has four major rivers, the Tuo, Min, Jialing and Wu, which all flow into the Yangtze at the southern part of the province. Together with the Jinsha and rivers in the mountainous western part of the province, they endow the province with rich water resources. Sichuan Province lies to the northwest of the Yangtze and 98% of the province's surface run-off drains to the Yangtze. The Project Cities lie on the Tuo and the Min Rivers. which drain to the Yangtze. It is necessarv to have an understanding of the regional water resource management in the Sichuan Province in order to better appreciate the water quality issues of the studv area. The agricultural potential of the Chengdu Plain has been greatly enhanced by the Dujiangyang Irrigation Scheme located northwest of Chengdu on the Minjiang (the Min River). This Scheme consists of major headworks in the Min River and a complex network of natural and artificial chaniels across the Chengdu plain. The site has documented irrigation systems from over 2000 years ago and the original headworks was built in the year 700. It is reportedly the oldest functioning irrigation scheme in the world and it uses the natural river configuration to minimise sedimentation in the irrigation systems. The plain drops from about 730 m at Dujiangvang to about 500 m at Chengdu. The siglaificant urbanisation and industrialisation is putting extreme pressure on the surface waters in the five Phase I SUEP cities. In Chapter 2 of the Main Report the details of the major surface waters in each city are shown. It is also very important to realise that there are many small drainage channels and tributaries in these urban areas that consist mainly of domestic and industrial wastewater discharges. hence the environmental needs extend well beyond the larger, classified surface waters. The Phase I SUEP projects have concentrated on urban water resources and water quality issues. The COWI/DHI water resources modelling and strategies contain significant information on the overall water resource conditions and wastewater loadings from other pollutant sources in the study area. Important environmental aspects in the long term plans for the province should cover aspects such as  SICHUAN URBAN ENVIRONMENT PROJECT ENVIRONMENTAL ASSESSMEN'T Exec=ive Summary The Study Area AN GNG Bsin Bas z Tuo Basin 41367.EA.EXECSUM  SICHl!AN lTRBAN ENVIRONNIENT PROJECT ENVIRONMENTAL ASSESSM ENT Volume I - Executive Sumniarv industrial wastewater, agricultural water usage and water quality impacts, non-point pollution control and related issues. These issues have not been fullv addressed in the Phase I of SUEP. These issues will be re-visited in later phases of SUEP. but the proposed interventions of Phase I are necessary regardless of the ongoing efforts to develop an integrated system for water resources and water qualitv decision-making in the Province. The Industrial Pollution Control Action Plan. which is under preparation. will provide a reasoned development plan to deal with the serious industrial discharges in the area-and will forrn a basis for the introduction of more effective industrial pollution control. Agriculture is by far the most water-consuming sector in the province. From the present average consumption of 37 million m3/day. it is expected (despite a decrease in agricultural land) that irrigated agriculture will increase to create a water demand of 40-45 million m3/day in 2010. The general agricultural practices, with widespread terracing capturing the natural runoff, favours high water losses bv evapotranspiration, thereby limiting the wvater available for the major cities. Since water use for irrigation mostly coincides with dry weather conditions it is a significant factor affecting water resource availability during periods of low river flow, and hence. is often the key factor determining water resource conditions for urban areas. The pollution level in Jinsha-Yangtze and Jialing rivers is generally low, as shown in Appendix A to the Main Report, but the entire Tuo river and parts of the Min river are polluted by wastewater. Small rivers like the Fu in Chengdu and the Fuxi in Zigong are heavily polluted. According to the COWI/DHI studies, the main pollutants are mostlv confined to the following: micro-organisms including bacteria from households and animal husbandry * degradable organic matter from households and industrv a ammonium/ammonia from households and industry * the nutrients. phosphorus and nitrogen, which contribute to eutrophication problems. Need for the Project The Sichuan provincial government has undertaken overall planning of the exploitation and utilisation of water. the collection treatment and discharge of wastewater and the collection and disposal of solid waste in a number of the cities in the Yangtze River catchment area as a part of the longer term objectives of SUEP. This planning covers the cities of Chengdu. Deyang. Zigong. Neijiang, Luzhou. Leshan. Yibin. Mianvang. Guangyuan. Panzhihua and Nanchong. The objectives of this planning are to: * Comprehensively control water body pollution of the main channel of the Yanatze River and its four tributaries in Sichuan Province: * Meet the increasing water demand of large and medium sized cities in the province and to improve the urban environmental qualitv of cities along the rivers: The complete implementation of the above mentioned components or sub-projects will ultimately resolve the problems related to water supply, wastewater treatment and solid waste or refuse treatment/disposal for 75% of urban residents in the province. The implementation of those sub- projects will have practical and far-reaching significance for creating a good ecological environment. 41367.EA.EXECSUM ES. DFCFMRFR IQQR  SICHLUAN U'RRB\A FNVIRONNIENT PROJECT ENVIRONNIENTAL. ASSESSNIENT Volume I - Executive Summarv improving people's living standard and achieving the strategic target of sustainable development in Sichuan. EA Preparation Requirements The Environmental Assessment (EA) for this project was based on the following directives and guidance documents: * World Bank Operational Directive 4.01. October 1991 (Class A Project); * World Bank Environmental Assessment Sourcebooks. Volumes 1-3. Technical Papers 139, 140. and 154. * World Bank Environmental Assessment Updates 1-21, through December 1997. * World Bank Aide Memoires (May 1997. October 1997, March 1998. September 1998); * NEPA Standard HJ/T 2.1-2.3. 1993, Technical Guidelines for Environmental Impact Assessment. 1993-09-18 published, 1994-04-01 in effect. * Class A project determination Project Preparation The SUEP I has been undergoing preparatorv work for several years under a variety of funding sources, in addition to the DFID project preparation work of Mott MacDonald. Some of the most relevant work on the project covered in this EA is listed below: * Water Sector Fact Finding Study carried out by Ausino (Australian funding); * Development Trends and Infrastructure Study undertaken by Chreod (Canadian funding): * Urban Water & Wastewater Resources Strategy including water quantitv and qualitv modelling carried out by COWI/DHI (Danish funding); * GIS Impiementation studv carried out by several Canadian firms in joint venture as the Canadian Sichuan Information Management Consortium. The Prioritisation of Schemes Although a large number of proposals were submitted to SUEP Management Office (SUEPO) from the project cities. SUEPO has proposed that the projects within the Tuo River Basin. Chengdu and Leslhan for priority implementation duringi the Phase I of SUEP. The provincial SUEPO provided the following background information relative to this prioritisation: * The Tuo River Basin has the highest preference because it contains over 22 million population. or aboiLt 20% of the provincial total. even though it only contains 5% of the provincial land area. Water shortages are severe in the basin and at the same time polLution loads are serious. negatively affecting the abilitv to abstract more water. * Chengdu City. the capital of Sichuan. is the centre of Southwestern China in tenns of economv. trade and culture. The environmental infrastructure is far short of what is necessarv to serve the citv causing extreme water quality degradation in the urban area. * Leshan is one of the most popular tourist cities in China and the location of the Grand Buddha cultural and historic site. Water supplies are outdated and insufficient and there is no adequate wastewater collection or treatment svstem. Solid waste management is also inadequate. 41367 EAXEXECSIJM ES-4 DECEMBER 1948  SICHIUAN l!RB.-N ENVIRONMJENT PROJECT ENVIRONNMENTAL ASSESSMENT VolIum I - Executive Summarv The relative merits of alternative water pollution control schemes for both the Tuo and Min river basins were evaluated by Mott MacDonald, on the basis of data provided by COWI/DHI. The report of this work is presented in full in Appendix A. The methods used in the conduct of this work are summarised further below. The project components. selected for the SUEP Phase I and summarised below, all ranked highlv in terms of benefit/cost and are clearly justifiable in these terms. Overview of SUEP Phase I Project Components The objectives of Phase I of the SUEP have been delineated in detail by SUEPO and DFID and can be summarised as follows: * To develop environmentallv, socially and economically effective schemes to improve water supply, water pollution control and solid waste services for six cities in Sichuan. The following list show's the projects that are now included in the first phase of the SUEP. Six cities were originally to be included in the Phase I of SUEP but Neijiang WwTW scheme was dropped due to funding limitations and project readiness. Five cities are now covered by the SUEP Phase 1. Water Supply I . Leshan Water Supply Pipeline and Treatment Works Nr. 4 100,000 m3/d 2. Zigong Water Supplv Pipeline and Treatment Works 200.000 m;/d 3. Luzhou Beijiao Water Supply Works Expansion and pipelines 50,000 m'/d 4. Luzhou Daxikou Water Supply Pipeline and Treatment Plant 50.000 m3/d The two water supply schemes listed above for Luzhou have now been combined as a single project component but have been considered independently. Municipal Waste Water 5. Chengdu Long Quan Treatment Works and interceptor sewer 300.000 m3/d 6. Leshan Wastewater Collection and Preliminarv Treatment 254.000 m'/d 7. Devang Treatment Works and interceptor sewer 100.000 m3/d 8. Zigon_ Treatment works, pumping stations and interceptor sewer 80.000 m'/d Municip(l Solidl Watste 9. Leshan Improved Collection Equipment and Landfill 400 T/d Urhban .Vknagentent Info7rmation Srstents (UMIS) The Urban Management Information Svstems (UMIS) component is'being prepared for the Phase I of SUEP under support of the Canadian government. It will support the improvement of urban management practices in five project cities through the upgrading of computerised information svstems and extension and updating of urban mapping information. Culturail Heritage The Sichuan Province Cultural Heritage Strategic Master Plan (SPCHSMP) is under preparation with funding support from the Italian government. t 1 >A~~~~~ F C FYFCRI 1V4 rc; nFrr:~~~~~~~I~TP.btOr IoOQ  SICHUAN URBAN l-NVIRONNMENT PROJECT ENVIRONMENTAL ASSESSNIENT Volume I - Executive Summar% Teclhnical Assistance The WB considers it critical that institutions responsible for implementing and managing SUEP sub- projects are equipped with the management and technical knowledge. skills and equipment necessary to carry out their mandates. A technical assistance (TA) needs assessment has been undertaken and this has formed the basis for an institutional programme which will provide training and equipment to the provincial and city PMOs. Provincial and City EPBs. and the water. wastewater and solid waste operating companies or departments. Of particular relevance to the EA. the WB has insisted on an overall environmental strengthening component in the area of environmental monitoring. This strengthening is aimed at improving the city and provincial ability to monitor and report on environmental conditions under stress, as well as providing the means to better assess the environmental performance of the Phase I investment package. Total Project Cost The Phase I SUEP programme is working under an overall budget of approximately $300M USD. with about half supplied by a World Bank Loan and half from the province and cities. Water and Environmental Objectives The Constitution of the People's Republic of China (1982) provides the framework for environmental protection law in China. Article 26 of the Constitution stipulates that the "the State protects and improves the living environment and the ecological environment, prevents and remedies pollution and other public hazards." National legislation is comprehensive and appears to cover most areas of environmental concern. However, the level of enforcement in Sichuan (as in the rest of China) is clearlv often less than satisfactory. The Chinese economy continues to grow rapidly and there is often a trade-off between the strict enforcement of environmental lezislation and promoting economic growth and employment. All surface waters in China have been classified according to ambient stream standards. The following is a general translation of the surface water classes: Description of Surface Water Classifications: I The headworks of rivers and national protected areas: 1I Areas where Nvater for drinking use is abstracted. where endangered fish exist. where animal habitats are of importance. and where national/provincial tourism is a designated use: Ill Areas Xwhere water is abstracted for drinking use. where common fish exist. and X here city visiting is important: IV Areas where water is used by industrial and for recreation: V Agriculture areas (separate standards also apply to agricultural irrigation water but rarely enforced). The SichlLuan Province. in line with the national policies. has set the following vear 2000 targets: 1. the domestic unit water supplies should increase from 160 lcd to 210 lcd by 2000: 2. centralised systems for treatment of domestic wastewater shall be constructed in all large and middle size cities: 41367.EA.EXECSUM ES-6 DECEMBER 199S  SICHUAN URBAN ENVIRONNIENT PROJECT ENVIRONMENTAL ASSESSMENT Volune I - Executive Summnar 3 with regard to industrial wastewater, the national target rate of treated wastewater shall be 60% compared to 48% at present: 4. the total amount of heavy metals in industrial wastewater shall not exceed, and should preferably be less than. 1995 levels: 5. the seriousiv increasing pollution situation in the Tuo River and the Min River shall be alleviated si2nificantly: 6. the quality of surface water in all major cities shall be improved and shall meet relevant national standards. The Urban Pollution Impacts Assessment (UPIA) is fully presented as Appendix A of this EA. The UPIA considered impacts on Sichuan's rivers from discharges of municipal wastewater which is of domestic and industrial origin. The objective underlying this water quality modelling work was to identifv, from a selection of possible wastewater treatment and collection schemes, those bringing the greatest benefit to the environment and to the people of Sichuan for the least expenditure of limited funds. Normally in a benefit cost analvsis a monetarv value is calculated to quantify the benefits and this may be compared directly with the construction and operating costs of the project. For an environmental improvement project such as SUEP it is not practical or realistic to attempt to calculate a monetary value for the benefits. For this reason. an alternative using the River Basin Pollution Index (RBPI) was developed. which provides a sound, objective and consistent quantitative measure of benefit. The prediction of the UPIA is that unless major steps are taken to reduce and treat discharges the quality of the water in the rivers Min and Tuo is going to seriously deteriorate from its already poor condition. The impiementation of the component works, selected from the UPIA prioritisation, will do much to improve river water qualitv but even on completion of these works it will not be possible to meet river wvater quality objectives. in all seasons, for much of the length of the rivers in the Min and Tuo Basins. It has been shown that the low flows in a number of river reaches would need to be augmented in the drv season for objectives to be attained. Clearlv this is a matter which should be addressed in later Phases of the SUEP. Project Benefits Project benefits have been identified for the nine component projects in the followving aeneral areas: WVcate,i Trea1tment WVorks - 4 Projects * Water Supply Quality and Availability' * Sanitation and Ptiblic Health * Economic Development HTLlcsieisuater Treatment W'orks - 4 Projects * Water Quality Improvements * Sanitation and Public Health * Dowvnstream Water Use * Aesthietics and Water Amenity Leshca .Vitnicipal .Solic Waste Project - I Project * Solid Waste Collection and Treatment * Sanitation and Public Health * Economic Development * Aesthetic and Enjovment .-c rCV1YN' I 'y4 S 7C nrcr%mrt) IOOe  SICHUAN URBA\N ENVIRONMIENT PROJECT ENVIRONMENTAL ASSESSMENT Volume I - Executive Surnmar Social Impacts Resettlement and compensation plans have been prepared and are covered in a separate "Resettlement Action Plan" (RAP). The final RAP has been submitted to the World Bank in December 1998. The main findings of the RAP are summarised as follows: Chengdu De! ang Leshan Luzhou Zigong Project WN r WVs WwS MSW Daxikou Bijiao W ww Tota Ws Ws Nr. of households to 340 24 i 53 37 11 10 45 33 554 be resettled _ _ Land Area to be 478 159 94 i 6 284 41 30 [22 224 1448 used (mu) _ Total Cost 131 20.8 9.4 7.7 25.9 4.1 2.2 33.4 10.0 244.4 Environmental Impacts Potential construction phase impacts are relativelv minor and easily mitigated. These construction impacts have been sorted according to their geographic location within the overall project scheme. Details of mitigation measures, the monitoring required to ensure that mitigation measures are effectively implemented. and responsibilities are provided in detailed charts. SUEP PMOs will have an ongoing responsibiiitv to track and report the monitoring work of all the identified agencies. in addition to their own direct monitoring activities. The potential operational phase impacts are relativelv minor and easily mitigated. Manv of the concerns have been addressed in the course of the design of the water treatment and wastewater treatment facilities. Details of mitigation measures. a programme for monitoring mitigation measures and responsibilities are provided in detailed charts. The economic anailsis for cities wvith both single and multiple SUEP Phase I component projects indicates that they are needed and affordable for the population of the cities. This project is meeting a "backlou" need for environmental infrastructure (including water supplies. wastewvater collection and treatment. and solid waste management) and should not induce adverse extensive growvth or secondanr impacts. The present environmental problems are serious and the provision of this environmental infrastrUctUre is necessary for current needs and to mitigate current problems. Future problems without the project WLould become even more critical. Mitigation and Monitoring Budget The capital budgets prepared for all SUEP component projects include allowances for necessary laboratorv construction and equipment. Using this equipment to perform the necessary and required testing bv the utility is also included in the operations budget for the project. Environnmental strenythening is considered a critical component of the Phase I SUEP project and a detailed Technical Assistance (TA) programme has been developed to address the needs. This includes training in management and operations for the PMOs and the utility companies. in a wide varietv of disciplines. There is a sianificant environmental monitoring component in the TA program to provide both equipment and training for city EPBs and the provincial EPBs. 41367.EAEXF:CSUM ES-8 DECEMBER 1998  SICHUAN URBAN ENVIRONMENT PROJECT ENVIRONMENTAL ASSESSMENT Volume I - Executive Summary These facilities and the training planned will greatly facilitate the monitoring of the environmental impact mitigation measures proposed. Furthermore. accomplishing the specified monitoring and reporting outlined in this mitigation plan will be greatly enhanced by the TA program. This TA program will also allow for improved overall performance assessment of the SUEP Phase I programme relative to meeting the project objectives. Future Phases of the SUEP will benefit from such assessments. Despite the above facilities and training the conduct of the mitigation monitoring programme will require additional funding. Cost estimates to cover both the short-term and long-term environmental monitoring have been estimated. In this context "Short-term" has been defined as the 5-year construction phase plus 2-year initial startup and environmental performance verification. "Long- term' is defined as annual monitoring required to verifv the environmental performance and other operational mitieation measures previously outlined. These mitigation monitoring costs are being added into the utility operational cost estimates for final appraisal documents. Costs for mitigation measures that relate to the management of construction will be included in the tender documents and responsibilitv passed on to the construction contractors. The following table summarises the monitoring cost estimates: SUEP PaeCopSRIEP Environmental NMonitoring Cost Estimates S[:EP Phase I Component Project . (Yuan/Year) r Short Term (5 vears}s Long Term Leshan Number 4 WTW 90.000- 110.000 30.000 - 40.000 Zigong Min River Diversion and WTW I 0.000 - 130.000 30.000 - 40.000 Luzhou Beijiao WTW T 100.000- 120.000 30.000 -40.000 Luzhou Daxikou WTk% 90.000 - 110.000 30.000 - 40.000 Chengdu Long Quan WwT,TW 140.000 - 160.000 | 40.000 - 50.000 Leshan Wastewater Collection and 130.000 - 150.000 40.000 - 50.000 Preliminar% Treatment Svstem De% an-, WwTXV 120.000 - 140.000 j 40.000 - 50.000 Zizont W%%T\%' 120.000 - 140.000 40.000 - 50.000 Lesihani hmnicipal Solid Waste Project 110.000 - 140.00G 50.000 - 60.000 Phase I Total Annual Cost. SRIEP 1.100.000 - 1.300.000 330.000- 420.000 Options Reviewed in Project Development The evaluation of options for individual project components covered issues such as: PFVater Treatment Works . * Alternative water sources * Design and technology selection * Construction techniques and materials Wustewisater Treatment Works * Sewer interceptors (routes. sizing, materials) * Wastewater treatment works (sizing, technology, processes) * Sludge processing and disposal system 41367.EA.EXECSUM ES-9 DECEMBER 1998  SICHUUAN tIRBAN ENVIRONNIENT PROJECT ENVIRONNIENTAL ASSESSMENT Volumc I -Executive Summarv Leshan MSW Project * Solid waste management schemes (collection and disposal) * Landfill locations * Leachate treatment methods * Gas collection Public Participation in the EIA During the 'Omonth project development time leading up to the finalisation of this EA. there have been manv meetings with the city PMOs. utility companies. city EPBs and other affected citv departments to discuss the proposed projects and environmental assessments. These meetings have occurred monthly at a minimum and been conducted with the full collaboration with local officials and have resulted in full support of the project and EA process. A survey form was used to gauge the public perception of the positive and negative impacts of each of the proposed projects in the five Phase I cities. An attempt was made to keep the survey random and representative in order to obtain an unbiased response from the community. The many meetings with public officials in the city. coupled with the surveys of public support, have shown that these projects are considered extremely positively and are well received by the public. The Willingness to Pay surveys also showed a reasonable level of support. It is not possible in China- to hold full public meetings on the projects. as is the standard practice in westem countries. However. there is no indication that there is anyone that is not in support of these projects or would try to stop their completion. Conclusions and Recommendations 1. The present environmental conditions in the project area are serious and the environmental infrastructure needs are high and expanding rapidlv. 2. The project components selected for inclusion in Phase I SUEP have emerged from a rigorous prioritisation process. and are well formulated. and are supported by detailed and complete preliminarv designs and cost estimates. 3. There is public support for the projects. indicated by the results of WTP and public opinion surveys. 4. The proposed projects meet financial and economic tests of sustainabilitv and are affordable to the local citizens. 5. Social impacts centre mainly arounld land acquisition and resettlement and these impacts. are not si2nificant and w ill be managed in line with a detailed RAP. 6. The potential environmental benefits of the Phase I SUEP projects are large as is demonstrated in the previous sections. 7. Potential construction and operational phase impacts of the proposed Phase I projects have been adequately assessed and no major issues have been identified. Detailed mitigation and monitoring procedures have been prepared and these should adequately 41367.EA.EXECSI.IM ES- 10 DECEMBER 1998  J SICHUAN URBAN ENVIRONNIENT PROJECT ENVIRONMENTrAL. ASSFSSMENT Volume I - Executive Summaro lessen the overall effect of these potential impacts. Monitoring costs have been included for this work and assignments detailed. 8. The overall conclusion is that the potential positive impacts are large. the potential ne2ative construction and operation impacts can be successfullv mitigated. and the projects contain no serious problems or fatal flaws" in their formulation. The project components are essentially environmentally positive and should be approved. Ongoing Activities COWI/DHI recentlv prepared an Urban Water and Wastewater Resources Strategy (March 1998) that outlines and reviews many of the water resources and water quality problems and potential remedial stratezies. This integrated planning work was carried out simultaneousiv with the project preparation vwork for the Phase I SUEP components. There is no significant conflict between the two separate evaluations. Future Phases of SUEP Phase I of the SUEP is intended to be onlv the beginning of a long-term investment program in environmental infrastructure in the Province. Future phases of the SUEP will benefit from the strategy and modelling work performed by COWI, the project preparation work and river pollution index work prepared by Mott MacDonald, and the variety of other action plans and studies just discussed. In addition, the technical assistance program for Phase I of SUEP will prepare a cadre of management and technical leaders for this ongoing work. Some of the initial priorities that should be considered are those projects that were initially selected but then dropped as well as other high scoring projects in the COWI/DHI screening exercise. New projects are likely to emerge from the integrated water resources and water qualitv work as well as the Industrial Pollution Control Action Plan work. AIIA A7 FYFCCI!M _I Ffl'ARFR IOOR