Initial Environmental Examination March 2009 People’s Republic of China: Hunan Flood Management Sector Project (Ningyuan County Non- core Subproject) Prepared by Hunan Hydro and Power Design Institute for the Hunan Provincial Project Management Office and the Asian Development Bank. This initial environmental examination is a document of the borrower. The views expressed herein do not necessarily represent those of ADB's Board of Directors, Management, or staff, and may be preliminary in nature. Your attention is directed to the “terms of use” section on ADB’s website. In preparing any country program or strategy, financing any project, or by making any designation of or reference to a particular territory or geographic area in this document, the Asian Development Bank does not intend to make any judgments as to the legal or other status of any territory or area. PEOPLE’S REPUBLIC OF CHINA HUNAN FLOOD MANAGEMENT SECTOR PROJECT NINGYUAN COUNTY SUBPROJECT ENVIRONMENTAL IMPACT REPORT TABLEEIR HUNAN HYDRO AND POWER DESIGN INSTITUTE MARCH 2009 Environmental Impact Assessment Qualification Certificate (1/3-size duplicate of original color copy) Assessment Unit: Hunan Hydro and Power Design Institute (Seal) Project Principal: Zheng Qingli Assessment Personnel Name Profession Title Certificate No. Duty Wu Vice General Approval Shengping Engineer Environment Senior Environmental Assessment Certificate No. Liu Zhiwen Check Engineering Engineer B27130002 Environmental Assessment Certificate No. Zhao Environment Senior B27130003 Review Weihua Engineering Engineer Environmental Assessment Professional Certificate No. 05354323505430316 Zheng Environment Assistant Environmental Assessment Certificate No. Compilation Qingli Engineering Engineer B27130014 Environment Environmental Assessment Certificate No. Ren Yu Engineer Participation Engineering B27130005 Environment Assistant Environmental Assessment Certificate No. Zhou Tao Participation Engineering Engineer B27130017 Environmental Impact Report Table of Ningyuan County Urban Flood Control Project Basic Information of the Construction Project Ningyuan Subproject under Hunan Hilly Regions Urban Flood Control Project Utilizing ADB Project Name Loans Construction Ningyuan County Urban Flood Control Project Construction Headquarter under ADB Loans Unit Legal Contact Representative Address Tel. Fax Postcode Construction Shuling Township, Ningyuan County, Yongzhou City, Hunan Province Place Proposal Approval Document Approval Hunan Planning Commission No. Department New construction Construction √ Expansion Sector Category and Water Conservancy Property and Reconstruction□ Code Technological Innovation□ Land Afforestation Area 2 Acquisition 219400 m2 2 251000m 2 (m ) Area(m ) Of which: Total environmental Percentage of Environmental Protection Investment 5820.16 protection 146.85 2.52 Investment in Total 4 investment (RMB 10 ) Investment (RMB 104) Assessment Expected Fee Commissioning (RMB 104) Date Project Content and Scale: I Project Content The main task for the urban flood-control in Ningyuan County is to protect Ningyuan County from the menace of flood of Ningyuan River (called “Lengshui” before the river come to the joints) and to drain to control the flood. According to the natural geographical condition, the existing situation of flood control and waterlogging drainage, and the overall urban planning, the flood control scale is confirmed to be south and north of the city. When the works is completed, the standard of flood control of Ningyuan County shall be upgraded from 5-year-occurance to 10-year-occurance as well as the standard of waterlogging drainage shall be upgraded from zero to 10-year-occurance. The main construction content of the project is as follows: (i) Flood-prevention Dike: Two flood-control protection circles shall be planned protection areas in south and north of city respectively. The embankment length is 8.35km and the protection area of the city covers an area of 8.45 km2. Protection area in south of the city: It is in the right bank of Ningyuan river and the flood-prevention dike extends form Wangziling Bridge to Xiazhong Dam with a total length of 4.175km; Protection area in north of the city: It is in the left bank of Ningyuan river and the Hunan Hydro and Power Design Institute 1 Environmental Impact Report Table of Ningyuan County Urban Flood Control Project flood-prevention dike extends form Wangziling Bridge to Xiazhong Dam with a total length of 4.175km. (ii) Flood Diversion Channel: Four brooks shall be re-constructed as flood diversion channels, namely, Flood diversion channel of Xiazhong Dam, Wangziling Flood diversion channel, Hujia Flood diversion channel and Wozidi Flood diversion channel, which have length of 2.0km, 2.25km, 2.15km, 2.10km respectively. (iii) Drainage Culvert gate: Four drainage culvert gates shall be re-constructed, namely, Zhichang Drainage Culvert gate, Chonghua Drainage Culvert gate, Huangjia Drainage Culvert gate, Chengguan Drainage Culvert gate, which are situated in 1+500m, 0+500m of the protection circle in south of city and 0-715m, 1+020m of the protection circle in north of city respectively. II Construction Arrangement i Transportation Arrangement in the Construction Area The county has a considerable convenience in transportation, as Yonglian High Grade Road passes through it in direction of south-north and roads of the county makes it linked with other townships. This project is situated in the city zone. The outsourcing building materials are mainly procured in the county and transported to the each construction area. As the roads in the city extend in all directions, the existing road could be taken as main line for transportation during the period of construction. However, disturbance due to the construction and impact on the surrounding environment should be much noticed. Moreover, a temporary road with the length of 1.0km is needed to build for the purpose for connecting the main line and each material yard so as to satisfy the in-site access. ii Construction Camp Arrangement There lay out four construction campsites in this works, which are arranged in the sequence of upper river to lower river. See the Table 1-1 Table 1-1: Construction Camp Layout of Ningyuan County Urban Flood Control Project Campsite No. Location Area Surrounding Environment Located in the right bank of It is of city zone environment. Many residents 1# Construction Ningyuan River with the pile live around the campsite，with the distance of 0.25hm2 Campsite no. of 0-100m, near to Shuling 30～50m. The vegetation is chiefly the green Road. species of wood. Located in the left bank of It is of city zone environment. Many residents 2# Construction Ningyuan River with the pile live around the campsite，with the distance of 0.25hm2 Campsite no. of 0+180m, near to Nvying 30～50m. The vegetation is chiefly the green Road. species of wood. Located in the right bank of 3# Construction It is of suburb environment. Fewer residents live Ningyuan River with the pile 0.25hm2 Campsite around. The vegetation is chiefly brush wood. no. of 1+800m. Located in the place of 100m 4# Construction north to right bank of It is of suburb environment. Fewer residents live 0.25hm2 Campsite Ningyuan River with the pile around. The vegetation is chiefly brush wood. no. of 2+380m. According to the construction plan, 1# and 3# construction campsite shall be built in August of the first construction year, the 2# construction campsite shall be built in August of the second construction year, add, and the 4# construction campsite shall be built in August of the third construction year. All the four construction campsite shall be removed after the construction is completed. iii Construction Material Yard Arrangement Hunan Hydro and Power Design Institute 2 Environmental Impact Report Table of Ningyuan County Urban Flood Control Project A Soil material yard The soil material required for the project partially come from the excavation and majority are borrowed from Lijiadong Soil Material Yard with volume of 0.1725 million m3. This soil material yard is a hilltop, the soil contains clay gravel and clay. The average haul distance of soil is 1.0~3.5km, and the storage is 0.8 million m3，the soil available for borrowing in soil material yard 4.1hm2. The surface vegetation of the soil material yard is bush wood. No residents live around within 200m. Fewer residents are distributed on both side of the interconnecting road between the soil material yard and construction area with population of 100, 20~50m far from the construction road. B Sandstone material yard As the storage of sand and gravel in Ningyuan County is limited, the sand and pebble required for this works shall be procured in the sand yard of Daoxian County, with the haul is around 50km. C Block stone material yard There are many stone yards around Ningyuan County, particularly, the stone yard near the Lianhuatang Cement Plant is quite ideal as the stone materials are exposed so that it is easy to exploited. The stone in this stone yard is of rag with thickening shape. The average haul for the stones are 0.5~2.5km, the storage is 3 million m3 or so, and the exploitation area of material yard is 4.76hm2. As the stones in this stone yard are exposed outside, there are no vegetation distributed in the surface in the main. The stone yard is located in suburb, no residents living in around. iv Spoil Areas Arrangement The volume of spoil in this project is 0.232 million m3. There lay out two spoil areas. Lijiadong Spoil Area located in south of Lijiadong Soil Material Yard covers an area of 2.9hm2. The vegetation in the surface of spoil area is similar to that of Lijiadong Soil Material Yard, namely, bush wood. And the vegetation coverage rate of this spoil area is 35% or so. Xuejia Spoil Area located in east-south suburb of city zone has an area of 0.448hm2. The vegetation of the earth’s surface is bush grass, with vegetation coverage rate is 30% or so.