China - Yixing Pumped Storage Project : environmental assessment (Vol. 1 of 3) : Summary of Environmental Assessment

E628 January 2002 SUMMARY ENVIRONMENTAL ASSESSMENT REPORT YIXING PUMPED STORAGE POWER PROJECT Prepared for: The Government of Jiangsu Province Prepared by: Jiangsu Provincial Electric Power Company East China Investigation and Design Institute January 2002 FIllE COPY  SUMMARY ENVIRONMENTAL ASSESSMENT REPORT YIXING PUMPED STORAGE POWER PROJECT Prepared for: The Government of Jiangsu Province Prepared by: Jiangsu Provincial Electric Power Company East China Investigation and Design Institute January 2002  Summary EA Report - Yixing Pumped Storage Project Project: Yixing Pumped Storage Project, P.R. China Document: Summary EA Report (Final Draft) EA Team Leader: Ding Mingming Senior Engineer EA Team Members: Rui Jianliang Senior Engineer Chen Gengxing Senior Engineer Li Jiapei Senior Engineer Chen Gengtu Engineer Reviewer: Chen Fengliang Senior Engineer Sign Off by: Zhang Zhusheng Senior Consultant, Chief Engineer EA Unit: East China Investigation and Design Institute EA License No.: Entrusted by: Government of Jiangsu Province and Jiangsu Provincial Electric Power Company  Summary EA Report - Yixing Pumped Storage Project Table of Contents 1. Introduction ............................................................. 1 2. Project Description ............................................................. 10 3. Environmental Setting ............................................................. 26 4. Prediction of Environmental Impact and Mitigation Measures ......................................... 42 5. Analysis of Scheme ............................................................. 59 6. Economic Benefit and Loss Analysis for Environment Impact ......................................... 64 7. Environmental Management Plan and Environmental Monitoring Plan ........................... 68 8. Public Consultation and Disclosure ............................................................. 80 9. Summary and Conclusions ............................................................. 84 Figures Figure 1-1 Map Showing Location of Proposed Yixing Pumped Storage Project .............. 2 Figure 2-1 General Layout Plan for the Yixing Pumped Storage Project (YPSP) ............. 14 Figure 2-2 Lower Reservoir Cross Sections ............................................................. 15 Figure 2-3 Cross Sections of Underground Works ............................................................. 16 Figure 2-4 Upper Reservoir Cross Sections ............................................................. 17 Figure 2-5 Proposed Layout of Makeup/Balancing Water Supply Works ......................... 18 Figure 2-6 Water Balance Between Upper and Lower Reservoirs, and Makeup / Water Balancing System ............................................................. 19 Figure 2-7 Proposed 35 KV Transmission Lines ............................................................. 21 Figure 2-8 Proposed Route of Double Circuit 500 kV Transmission Line ......................... 22 Figure 2-9 General Layout Plan of Spoils Disposal Sites and Process Water Treatment Facilities ............................................................. 23 Figure 7-1 Environmental Management/Monitoring Institutional Framework for YPSP ............................................................. 69 Tables Table 2-1 Summary of Key Engineering Technical Features ............................................. 11 Table 3-1 Regional Climate Data for Yixing Area ............................................................. 26 Table 3-2 Suspended Sediment Loads in Three Yixing Area Water Bodies ...................... 32 Table 3-3 Varieties of Wildlife Found within Proposed Project Setting ............................ 33 Table 3-4 Project Land Requirements ............................................................. 35 Table 3-5 Well Water Monitoring Results from the Project Area ...................................... 38 ii  Summary EA Report - Yixing Pumped Storage Project Table 3-6 Ambient Noise Monitoring within the Project Area (dBA) ............................... 41 Table 4-1 Summary of Wastewater Treatment Requirements ............................................ 47 Table 5-1 Pollutant Discharge Amount for YPSP and Thermal Alternative ...................... 60 Table 7-1 Construction Phase Environmental Management Program Activities ............... 71 Table 7-2 Operation and Maintenance Phase Environmental Management Program Activities ................................................................. 74 Table 7-3 Proposed EMP Budget (RMB Yuan) ................................................................. 78 Table 8-1 Summary of Site Selection and Design Phase Consultation Activities .............. 80 Photos Photo 2-1 Proposed Location for the Primary Makeup/Balancing Water Supply Pumping Station ................................................................. 13 Photo 3-1 Existing Huiwu (Lower) Reservoir and Surrounding Forested Lands of the Yixing Forestry Farm, as Viewed from Upper Reservoir Access Road 28 Photo 3-2 View of Downstream End of the Existing Huiwu Reservoir and Surrounding Forest Lands that Form Part of the Yixing Forestry Farm - Tongguang Mountain in the Background ............................................ 29 Photo 3-3 View of the Proposed Upper Reservoir Site and Surrounding Forest Lands that Form Part of the Yixing Forestry Farm ......................................... 30 Photo 3-4 Existing Yixing Forestry Farm-worker's Village ............................................... 35 Photo 3-5 Location of Nearest Drinking Water Wells (e.g., Jingle Water Company, et al) Relative to Toe of Upper Dam 37 Photo 3-6 Downstream End of Huiwu Reservoir Showing Tea Gardens and Other Irrigated Lands (Note: Yixing City in the Background, and Exposed Cut of Expressway Under Construction 40 Appendices Appendix A - Diagram of Daily Operating Regime for the Jiangsu Provincial Power Grid in Year 2010 with Yixing Pumped Storage Project in Operation Appendix B - Summary of Key Engineering Technical Features  Summary EA Report - Yixing Pumped Storage Project Chapter 1 Introduction to the Project 1.1 Introduction This section of the report provides an overview of the project and its objectives, and identifies the main benefits and adverse impacts that are expected to accrue if the project proceeds. 1.2 Background The Jiangsu Government, in association with the Jiangsu Provincial Electric Power Company (JPEPC), proposes to implement the 1000 MW Yixing Pumped Storage Project (YPSP). The project will be located in the south of Jiangsu Province, just west of Tai Lake, near the borders of neighbouring Anhui and Zhejiang provinces (see Figure 1-1). The YPSP is a water resources development project consisting of two small reservoirs (one lower; one upper), and an underground power generating/pumping station. As a pumped storage facility, the project will be designed to generate power during daily periods of peak electricity demand, when energy can be sold at a premium, by using the water stored in the upper reservoir. The water collected in the lower reservoir will then be pumped back up to the upper reservoir, during periods of the day when cheap energy can be bought from the east China power grid. A 6.3 km double circuit 500 kV transmission line will be constructed as part of the project for wheeling power out to the 500 kV Liyang Substation, which connects to the east China power grid, and to receive off-peak power with which to pump water back up to the upper reservoir.. Two 35 kV transmission lines (5 km from Taodu Substation; 10 km from Yixing Thermal Power Plant Substation) will be constructed to bring power from the grid into the 35 kV YPSP Substation, which will be constructed near the lower reservoir. This power will be used initially for supplying electricity to the upper and lower reservoir construction areas and, later during operation, to provide electricity to the powerhouse facilities and auxiliary operations. Jiangsu is one of the most economically developed provinces in China, and its power supply system is the most important part of the entire east China power grid. At present, the Jiangsu provincial power supply system is totally dependent on thermal generating plants for electricity generation. Because of their operating characteristics, thermal plants do not provide for good peak energy regulation. There is considerable concern that the current dispatching and operating system is unable to meet the increasing demand for peaking power, and that safe and stable operation of the system will soon be at risk. To solve the problem of regulating peak energy demand in Jiangsu Province and the east China power grid, the Government of Jiangsu Province has determined that it is necessary and feasible to build the Yixing -I-  Summary EA Report - Yixing Pumped Storage Project J ,- , SHANDONG. PROVINCE. ILicA - AII ANYUNGANG & Capital JIANGSU PROVINCE 7$. HUAJNG YIN ~~~~ L~~~~~AI'Elk "-:RiverandLake~~~~~~~~N NJ Nucea NNwer NANation ;~~4~ji~~.frJ~~J '.~~. 4~~ ~ SHANGHA LEGEND * Capital City --Province boundary o Capital City Puwpd Storage Power Station -RailIway The Grard Canal -e~-Riverardl_ake- Nuclear Power Station Figure 1-1 - Map Showing Location of Proposed Yixing Pumped Storage Project - 2 -  Summary EA Report - Yixing Pumped Storage Project Pumped Storage Power Project. The contribution that the YPSP will have on regulating peak demand in Jiangsu Province, once the project is fully operational (i.e., by 2010) is illustrated the diagram included as Appendix A. 1.3 Basis for Environmental Assessment As a requirement of both the Government of China and the World Bank, an Environmental Impact Assessment (EIA) report must be prepared for the YPSP. The project has been assigned a Category 'A' rating under the World Bank's environmental screening process. The following World Bank environmental and social safeguard policies have been triggered by the project: * Environmental Assessment (OP 4.01, BP 4.01, GP 4.01); * Involuntary Resettlement (OD 4.30); and * Safety of Dams (OP 4.37, PB 4.37) The Bank requires that the EIA be prepared in both the Chinese and English languages, and that the EIA meet both Chinese and World Bank EIA requirements. Where Bank funding is involved in any part of the project, the EIA must cover all project components, including transmission lines. A draft EIA report (Chinese language version) was prepared by the East China Investigation and Design Institute (ECIDI) and State Power Corporation (SPC), as part of the feasibility studies, and submitted to the Jiangsu Environmental Protection Bureau (JEPB) for approval in January 2000. The JEPB convened a panel of experts, which met over a two day period (25 and 26 January 2000) to review the draft EIA. Formal approval of the draft EIA report was provided by the JEPB on 05 September 2000. Environmental specialists representing the World Bank subsequently reviewed the draft EIA (English language version), dated November 2000, in early December 2000, and provided detailed review comments. The draft EIA (English version) was revised and resubmitted to the Bank as a final draft EIA in May 2001. Further Bank review of this document produced additional comments, which were addressed by ECIDI and SPC in the final EIA dated September 2001, and submitted to the Bank in November 2001. The EIA report takes into account the entire spectrum of potential project-related environmental effects on the bio-physical and socio-economic environments within the project setting. The EIA identifies the existing environmental and socio-economic conditions that could be affected adversely or beneficially by the project, identifies potentially significant impacts, and recommends measures for mitigating the more serious negative impacts. The EIA also suggests measures for enhancing beneficial impacts, where a small additional investment would yield environmental returns. -3 -  Summary EA Report - Yixing Pumped Storage Project The following state and provincial policies, regulations and standards have been followed in preparing the EIA report: * Environmental Protection Law of the People's Republic of China (1989) * Law of the People's Republic of China on the Prevention and Control of Water Pollution (1999) * Law of the People's Republic of China on the Prevention and Control of Air Pollution (1996) * Regulations of the People's Republic of China Conceming Prevention of Environmental Noise Pollution (1996) * Law of the People's Republic of China on Prevention of Environmental Pollution by Solid Wastes * Land Administration Law of the People's Republic of China (1999) * Forestry Law of the People's Republic of China * Law of the People's Republic of China on the Conservation of Water and Soil * Law of the People's Republic of China on the Protection of Wild Animals * Regulations of Environmental Protection Management for Construction Projects [1998], Decree No.253 of the State Council of the People's Republic of China * Technical Guidelines of Environmental Impact Assessment HJ/T 2.1-2.3 - 93. HJ/T 2.4 - 95