Environmental Monitoring Report

Project Number: 36595 December 2008

PRC: Urban Environment Improvement Project

Prepared by Hefei Municipal Government With the assistance of Hefei Municipal Research Institute of Environmental Protection PRC

For Hefei Municipal Government Hefei Urban Construction Investment Company Hefei Chao Lake Ecological and Environmental Improvement Construction and Administration Bureau Hefei Xincheng State Assets Operating Co. Ltd.

This report has been submitted to ADB by the Project Management Office of Hefei Municipal Government is made publicly available in accordance with ADB’s public commun ications policy (2005). It does not necessarily reflect the views of ADB.

ADB Funded Hefei Urban Environment Improvement Project External Environment Monitoring Report

ADB Funded Hefei Urban Environment Improvement Project

External Environment Monitoring Report (Second time)

Hefei Municipal Research Institute of Environmental Protection

December 2008

Hefei Municipal Research Institute of Environmental Protection 1 ADB Funded Hefei Urban Environment Improvement Project External Environment Monitoring Report

ADB Funded Hefei Urban Environment Improvement Project

External Environment Monitoring Report

Table of Contents 1. CONSIGNMENT AND PURPOSE OF MONITORING...... 3 2. PROJECT PROFILE...... 3 2.1 BACKGROUND ...... 3 2.2 OVERVIEW OF THE PROJECT ...... 4 2.3 PROGRESS UNDER THE PROJECT ...... 6 3. ENVIRONMENT MANAGEMENT MEASURES ...... 9 3.1 PURPOSE OF ENVIRONMENT MANAGEMENT...... 9 3.2 ENVIRONMENT MANAGEMENT MEASURES...... 9 4. ENVIRONMENT PROTECTION TARGET AND ENVIRONMENT MONITORING PLAN ...... 13 5. ENVIRONMENT MONITORING...... 18 5.1 SURFACE WATER ENVIRONMENT MONITORING ...... 19 5.3 LEACHATE ...... 19 5.4 ATMOSPHERE...... 19 5.5 NOISE ...... 20 7 CONCLUSION AND EVALUATION ...... 22 7.1 FINDINGS OF SURFACE WATER ENVIRONMENT ...... 22 7.2 FINDINGS FROM GROUND WATER ENVIRONMENT MONITORING...... 24 7.3 FINDINGS FROM LEACHATE ENVIRONMENT MONITORING ...... 25 7.4 FINDINGS FROM ATMOSPHERE ENVIRONMENT MONITORING...... 25 7.5 FINDINGS FROM NOISE ENVIRONMENT MONITORING...... 27 7.6 FINDINGS OF SOIL ENVIRONMENT MONITORING ...... 28 7.7 MONITORING SUMMARY...... 29 8. CONCLUSION AND RECOMMENDATION ...... 30

Hefei Municipal Research Institute of Environmental Protection 2 ADB Funded Hefei Urban Environment Improvement Project External Environment Monitoring Report

1. Consignment and Purpose of Monitoring

According to the Environment Management Plan (EMP) and relevant requirements specified in the Final Report of the ADB funded PPTA for Hefei Urban Environment Improvement Project, regular monitoring was carried out for a number of paramters during the project construction and operation stages. In line with the target to reduce the negative impact of the Project and in accordance with all the specifications and standards of as well as the safeguard policies of the Asian Development Bank (ADB), based on environmental impact monitoring and data analysis, the report is to evaluate: ① if the environment protection measures comply with the requirements of the relevant laws and regulations; ② the extent of environmental impact; and ③ the overall implementation status of the project environment management plan during the construction period and operation stages. When we were given the assignment for the external environment monitoring of Hefei Urban Environment Improvement Project under ADB Loan, we submitted the first External Environment Monitoring Report for Hefei Urban Environment Improvement Project under ADB Loan in July 2008. According to ADB’s requirement, we have organized a second field survey of the project sites in December 2008, conducted the site investigation over the project area and undertaken field monitoring on the environment status of the sites. Based on the above, we have prepared and completed the second External Environment Monitoring Report for Hefei Urban Environment Improvement Project under ADB Loan.

2. Project Profile

2.1 Background

As the capital city and industrial centre of Anhui Province, Hefei has a population of 4.5 million and administrates four districts and three counties, with an area of 7,029 km2. Hefei City is located between the Changjiang River and the Huaihe River and is 15 km away from the northwest corner of the Lake, one of the five major fresh water lakes in China. The Hefei region has a flat topography, with an average altitude of 12~15m. Thus, Hefei frequently suffers from the hazard of flood. Rapid urban and industrial development has caused massive pressure on municipal infrastructure. The issue of environment protection has become critical. Hefei also faces serious industrial and automobile air pollution. Non-treated sewage discharged into the rivers and lakes has started to endanger the safety and supply of drinking water. Being aware of the worsening environment, Hefei Municipal Government has formulated a complete trans-departmental environmental protection program to solve the above mentioned urban environment problems, according to the national guidance and policy on environment protection, to safeguard the sustainable development of Hefei City. To this end, Hefei Municipal Government has initiated a series of key projects. The Hefei Urban Environment Improvement Project under ADB Loan will contribute greatly to realizing the above objectives. The Project will

Hefei Municipal Research Institute of Environmental Protection 3 ADB Funded Hefei Urban Environment Improvement Project External Environment Monitoring Report improve the environment in Hefei by improving the sewage treatment, flood control and traffic services of Hefei City. In addition, by reducing poverty, increasing employment, enhancing investment and business opportunity and reducing the diseases caused by polluted water and bad air quality, the project will improve Hefei residents’ quality of life.

2.2 Overview of the Project

Hefei Urban Environment Improvement Project covers four major areas: urban water resource management, sewage treatment, refuse disposal and environment improvement, and pipeline construction. Currently, 8 sub-projects are in progress: Urban Sewage Pipeline System Improvement Project, Comprehensive Renovation Project of Qingxi Road Landfill, Sili River Comprehensive Control Works, Banqiao River Comprehensive Control Works, Ershibu River Comprehensive Control Works, Shiwuli River Sewage Treatment Plant and Pipeline Works Phase-I, Wangtang Sewage Treatment Plant and Pipeline Works Phase-II, and Hefei Chaohu Lake Bank Ecological Environment Comprehensive Control Works. 2.2.1 Urban Sewage Pipeline System Improvement Works This sub project will build the pipeline works for Wangtang, Zhuzhuanjing and Caitianpu sewage treatment plants, including constructing and improving 206km of sewage pipelines, including 47,545m of sewage pipeline for Wangxiaoying System, 36,120m of sewage pipeline for Wangtang System, 43,429m of sewage pipeline and 1 pumping station for Zhuzhuanjing System and 78,940m of sewage pipeline for Caitianpu System. By the end of 2008, the pipeline works of Changjiang East Road, Linquan Road, Changlin Road, Changjiang West Road, Bandao Road, Huoshan Road and Zhenxin North Road, totaling 21.2km, had been completed. 2.2.2 Comprehensive Renovation of Qingxi Road Landfill Project Hefei Qingxi Road Landfill is located in the northwest of Hefei, south of Qingxi Road, north of Nanfei River, and east of He-Jiu Railway. The Comprehensive Renovation of Qingxi Road Landfill Project is to to conduct the closure of the works for the existing Qingxi Road Landfill, which has not been properly closed. The comprehensive closure will be in accordance with the Construction Standards for the Sanitary Landfill Projects of Municipal Solid Waste, Technical Specifications for Sanitary Landfill of Municipal Solid Waste and the pollution control index. It will also undertake centralized pollution control, ecological system restoration and landscape works. The works include mainly the surface rainwater collection pipeline system, landfill anti-seepage system, landfill gas collection and emission system, greening, surface artificial material covering works, riverside slope reinforcement and stabilizing works, leachate collection and conveyance pipeline and sewage lifting pumping station, monitoring setup and restoration of the ecological system. The total length of vertical lining walls and the length of the protection slope is 627.75m. It also includes the leachate and landfill gas collection pipeline and treatment system, capping coverage, etc. By the end of 2008, the landfill gas pipeline and combustion system had been completed and was waiting for final acceptance check. 2.2.3 Sili River Comprehensive Control Works Sili River is in the northwest of Hefei, running from Dafangying Reservoir to the

Hefei Municipal Research Institute of Environmental Protection 4 ADB Funded Hefei Urban Environment Improvement Project External Environment Monitoring Report mouth of the Nanfei River, with a total length of 5.18km. The section from Dafangying Reservoir to Dangshan Road is an auxiliary work included in the Dafangying Reservoir Project, currently in progress. This section is about 1.3km long. The work scope covers the section from the mouth of Nanfei River to Dangshan Road (2nd Ring Road), with a total length of 3.88km. According to the new planning and alignment, the river course will be about 3.18km long. The works include dredging, slope protection, flood dyke and wall, dam, stormwater pumping station, road and bridge improvement, landscaping and greening works and auxiliary facilities. By the end of 2008, 80% of main works had been completed, and the pipe-network had been completed. 2.2.4 Banqiao River Comprehensive Control Works The Banqiao River originates in Changfeng County in the north of Hefei and is an important branch of the Nanfei River. Due to the continual expansion of the city and increasing industrialization in recent years, the pollution of the Baqiao River has become increasingly serious and has seriously affected the surrounding environment. Banqiao River Comprehensive Control Works covers the section from Gepo Main Stream to 2nd Ring Road Bridge. The existing river course is 9.4km long, of which the actual renovation length is 7.6km. The works include dredging, slope protection, bank roads, bridges, culverts and greening works. By the end of 2008, the main works were completed, and river-side landscaping works were still in progress. 2.2.5 Ershibu River Comprehensive Control Works Ershibu River is a branch of Nanfei River in Hefei and is an important seasonal river in the east of Hefei. The eastern region of Hefei is a major economic development and residential region in Hefei City. The wastewater generated in the industrial enterprises and residential households along the river is directly discharged into the river, causing serious pollution of the water quality of the river. The control range covers Bianhe Road Bridge (the eastern juncture of North 2nd Ring Road) to the mouth of Nanfei River, with a total length of 16.8km. The works include: dredging, river control, flooding prevention, embankment reinforcement, drainage pumping station, auxiliary culvert gates and other works. These works have not yet begun. 2.2.6 Shiwuli River Sewage Treatment Plant and Pipeline Works Phase-I This sewage treatment plant is located downstream of Shiwuli River, southeast of the juncture of Emeishan Road and Huangpujiang Road, with a capacity of 50,000 tons/day, 58.7km of pipeline and one sewage lifting pumping station. The sewage treatment plant adopts an in-depth treatment technique of fine bubble aerated oxidation ditch and micro-flocculation filtration. Ultra-violet disinfection is adopted for disinfection. The effluent is subject to the national Class IA standard specified in the Pollution Discharge Standard for Urban Sewage Treatment Plants. For the sludge treatment, a concentration dewatering unit is used for dewatering, while the sludge cakes will be shipped out for centralized treatment. By the end of 2008, main works had been mostly completed, and the equipment had been installed. 90% of plant pipe-network had been completed and 81.7% pipeline works had been completed in total (Phase-I 5,746m，Phase-II 11,733m). 2.2.7 Wangtang Sewage Treatment Plant and Pipeline Works Phase-II Wangtang Sewage Treatment Plant is located in the southeast corner of the juncture between Qianshan Road and Qingxi Road. This project will build a new

Hefei Municipal Research Institute of Environmental Protection 5 ADB Funded Hefei Urban Environment Improvement Project External Environment Monitoring Report sewage treatment plant of 100,000 m3/d, 20km of pipeline and 3 sewage lifting pumping stations and carry out the technical upgrade for Sewage Treatment Plant Phase I (with a capacity of 80,000m3/d). The new sewage treatment plant will adopt the technique of oxidation ditch plus V-type filter tank. For the odor control system, the biofiltration will be adopted and the liquid chlorine disinfection will be adopted for disinfection. The effluent will be subject to the national Class IA standard specified in the Pollution Discharge Standard for Urban Sewage Treatment Plants. For the sludge treatment, the concentration dewatering unit will be used for dewatering, while the sludge cakes will be shipped out for centralized treatment. By the end of 2008, main works had been basically completed, and pumping station had been basically finished. The equipment installation was still in progress. 2.2.8 Hefei Chao Lake Bank Ecological Environment Comprehensive Control Works The Chao Lake Basin is located in the central part of Anhui Province, being part of the left-bank water system downstream of the Changjiang River. It covers part or all of the 13 counties (cities) including Hefei, Chaohu, Liuan and . The basin has a total area of 134,86km2, of which Hefei occupies 3,469 km2, Chaohu 6,709 km2, Liu’an 3,157 km2 and Anqing Yuexi County 151 km2. In Hefei, the Chao Lake is not well controlled and the conservation works of the water and soil surrounding the lake have not been undertaken, as they endanger the “ecological system” in the surrounding areas of the Chao Lake and affect the sustainable and stable development and social security in the surrounding regions of the Chaohu Lake. Hefei Chaohu Lake Bank Ecological Environment Comprehensive Control Project is located along the bank of Chaohu Lake in the city area of Hefei, covering the administrative regions of , and . The total length of the Chaohu Lake bank to be improved is 20.153km. The major works include: the lake bank reconstruction and auxiliary works, lake side wave-resistance works, lake side dyke construction and consolidation works, lake side water environment and sewage-prevention works, auxiliary works of Tangxi Hydrologic Station, lake side flood-control road works, pipeline facilities and equipment. By the end of 2008, 30% of the wave ressitance platform of Feixi County had been completed, and the width was 30m. A test had been basically finished. The selection of tree species was finished and the tree species test had been conducted.

2.3 Progress under the Project

The progress of the works under Hefei Urban Environment Improvement Project is refered to in Table 2-1:

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Table 2-1 Schedule of Current Works under Hefei Urban Environment Improvement Project Investment Works for the 2nd Level of Sr. Work plans for the 1st Sub-project as of Dec. Works completed as of Dec. 2008 half of 2008 in the fulfillment of No. half of 2009 2008 first report plan Urban Sewage Changjiang East Road, Linquan Road, Changlin Road, Pipeline 14.88 Changjiang West Road, Bandao Road, Huoshan Road 30% of the major only partly 30% of the major 1 System million and Zhenxin North Road, in total 10.3% of the major works completed completed works completed Improvement Yuan works (21.2km of pipeline works) have been completed. Project Comprehensive Renovation 29.04 The landfill gas pipeline and combustion system has 100% of the all mostly 2 Project of million Acceptance check been completed, and the works have been completed. works completed complete Qingxi Road Yuan Landfill Sili River 62.84 80% of main works have been completed, and 100% of the major mostly 3 Comprehensive million All works completed pipe-network has been completed works completed complete Control Works Yuan completed Banqiao River 71.96 Main works have been completed, and river-side 50% of major ahead of River-side landscape 4 Comprehensive million landscape works are still in progress. works completed schedule works completed Control Works Yuan

Ershibu River 4.54 million 30% of major has not been 30% of major works 5 Comprehensive The works have not yet been started. Yuan works completed started completed Control Works The plant and pump station’s Shiwuli River civil works, Sewage 127.5 Main works have been basically completed, the equipment mostly 6 Treatment Plant million equipment has been installed. 90% plant pipe-network purchase and All works completed complete and Pipeline Yuan has been completed. 81.7% pipeline works completed in installation and Works Phase-I total (Phase-I 5,746m，Phase-II 11,733m). 30km pipeline almost complete.

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The plant and pump station’s Wangtang civil works, Sewage 55.68 Main works have been basically completed, and pump equipment Civil works 7 Treatment Plant million station has been basically finished. The equipment Mostly completed purchase and complete and Pipeline Yuan installation is still in progress. installation and Works Phase-II 12km pipeline mostly completed Hefei Chaohu Lake Bank 30% of the breakwater terrance of Feixi County works Subject to the Ecological 32 million have been completed, and the width is 30m.Test section mostly Subject to the effect of 8 effect of the pilot Environment Yuan has been basically finished. Choice of tree species has complete the pilot section section Comprehensive finished, and tree species test are been prepared. Control Works

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3. Environment Management Measures

3.1 Purpose of environment management

The project management is applied for all the sub-projects to prevent any environmental pollution during construction and operation stages, minimize the negative impact on the environment during the implementation and eventually achieve the objective of improving the urban environment of Hefei City.

3.2 Environment Management Measures

The environment management measures taken by different sub-projects according to the requirements of the local EPB and EIA reports are listed in Table 3-1—3-4:

Hefei Municipal Research Institute of Environmental Protection 9 ADB Funded Hefei Urban Environment Improvement Project External Environment Monitoring Report

Table 3-1 Environment Management Measures for Urban Sewage Pipeline System Improvement Works

Project Impacting Environment Improvement Measures and Management Arrangement Period Factors Impact

Construction The work site shall be closed; the slurry water from the pipeline waste water and works and slurry from the drilling works must be treated in the Water livelihood sewage sand trap before being discharged; special septic tank will be of workers built; temporary water tank will be established. The work site shall be closed; the dusty roads shall be sprayed with water; covering or closure measures should be used for transport and the transport route should be properly selected and speed of transport vehicles limited; traffic should be properly controlled and efforts should be made to minimize the occupation of traffic lanes from the solid waste of the pipeline Construction and works; during excavation and drilling works, the operating face transport dust should be sprayed with water to keep a certain humidity level; Air the loose and dry and solid surface soil at the work site should be frequently watered to prevent any dust; for the backfilling works, the dry surface soil should be properly sprayed with water to avoid any flying dust. Upon completion of the pipeline works, it is necessary to restore the road and plantation at the work site. Construction Exhaust pollution of automobiles Excellent maintenance to make sure that the flue gas discharged and construction from automobiles and machineries meet emissions standards machinery The construction machinery should be well maintained and competently operated so that the working noise of machinery is Noise from the minimized; the construction should be logically scheduled and construction Noise day work should be arranged. No construction is allowed from machinery and 22:00~6:00. If necessary, set up the temporary sound-proof transport vehicles fence. Traffic route should be selected to avoid any residential area. The transport of spoils is strictly subject to the stipulations of the Administrative Measures of Hefei City for Building Waste Solid Construction implemented as from September 1, 2004; the construction waste waste spoils and waste may be classified into the useful and non-useful. The useful part will be recovered, while the non-useful part will be shipped to Hefei Landfill Yard for treatment. Solid Sludge is shipped to Hefei Sludge Disposal Center for Operation Pipeline clearance waste centralized treatment.

Table 3-2 Environment Management Measures for Comprehensive Renovation Project of Qingxi Road Landfill

Project Impacting Environment Improvement Measures and Management Arrangement Period Factors Impact

Hefei Municipal Research Institute of Environmental Protection 10 ADB Funded Hefei Urban Environment Improvement Project External Environment Monitoring Report

1 effluent settling chamber for recycling the washing water will Construction be set up within the work site; 1 simple septic tank will be wastewater and established for treatment of livelihood sewage water, then the Water domestic sewage wastewater will be delivered to Wangtang Sewage Treatment of workers Plant for centralized treatment through nearby municipal sewage pipeline. The pavement should be compacted with a roller. It is necessary Road dust and to minimize soil falling from the earthwork vehicles. The odor from gas pavement should be properly sprayed with water. Before the Air recovery gabion landfill gas exhausting system is completed, the air duct of the well construction gas recovery gabion should be sealed to control the escape of odor. The construction machineries should be well maintained and operated so that the working noise of machinery is minimized; Noise from the the construction is thoughtfully scheduled and day work should

construction be arranged. No construction is allowed from 22:00~6:00. If Construction Noise machinery and necessary. Set up the temporary sound-proof fence. Enhance the transport vehicles acoustic environment management at the work site, keep the smooth traffic within the site and control the horning of transport vehicles in and out. Landfill waste Solid from the gas For construction at the Landfill Yard, the excavated waste can be waste recovery gabion buried onsite. works The destroyed vegetation should be restored as soon as possible. Construction should be avoided in the rainy season. Plantation Land for should be timely undertaken after the landfill is completed; Ecology construction and during the storm, the damaged working face and loose soil layer soil erosion should be covered with covering net, straw mats, etc. to prevent soil erosion. A retaining device should be provided for the slope of the road subgrade. Improve the leachate anti-seepage system and collection system to effectively prevent the waste leachate from entering the Nanfei Water Leachate River. The collected leachate will be delivered to Wangtang Sewage Treatment Plant for centralized treatment before being discharged as per standard. Set up the landfill gas recovery gabion and collection pipeline. Operation The negative pressure air exhausting method will be adopted to collect the landfill gas. The discharge duct port will be installed Air Landfill gas with automatic igniting device. The landfill gas will be combusted. The centralized emission ducts should be arranged with a sanitary protection distance of 300m. Noise of The inlet and outlet ducts of axial-flow ventilator at the exhaust Noise ventilators station will be installed with KY Series silencers.

Table 3-3 Environment Management Measures for Comprehensive Control Project of Sili River, Banqiao River, Ershibu River and Chaohu Lake (Hefei Section)

Project Impacting Environment Improvement Measures and Management Arrangement Period Factors Impact

Worksite and The work site shall be closed; temporary simple septic tank will Construction Water workers’ domestic be built; temporary water tank will be established sewage

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Leaching water of sediment dumping The treatment solution of drugged sediment will be adopted yard The work site shall be closed; dusty roads should be sprayed with water; covering or closure measures should be used for Construction and transport and the transport route should be properly selected and transport dust speed of transport vehicles should be limited; the construction materials should be covered or sprayed with water; onsite Air construction materials storage time should be minimized. Exhaust pollution of automobiles Excellent maintenance to make sure that the flue gas discharged and construction from automobiles and machineries meet the emission standard machinery Noise from the The construction machineries should be well maintained and construction operated so that the working noise of machinery is minimized. If Noise machinery and necessary, set up a temporary sound-proof fence. Traffic route transport vehicles should be rationally selected to avoid any residential area.

The excavated earthwork may be used for the embankment reinforcement and road construction. The sludge should be Huge quantity of dumped at the sediment dumping yard, without being disposed Solid spoils in the initial of. The construction waste may be classified into the useful and waste period of non-useful. The useful part will be recovered, while the construction non-useful part will be shipped to Hefei Landfill Yard for treatment. Upon completion of the works, level and cover the land and Soil Borrowing area restore the vegetation. As for the disturbed surface, adopt such engineering measures as building drains, retaining walls and leveling and other works Soil erosion and such planting measures as planting grass and trees to Ecology control the soil erosion. Operation Ecology of river Minimize the hard slope protection and maximize the ecological course slope protection Formulate a detailed immigrant resettlement program according Social impact due to the national regulations and with reference to the policy of Society to land use ADB. The land temporarily occupied should be restored and returned to the land users as soon as possible

Table 3-4 Environment Management Measures for Shiwuli River Phase I, Wangtang Sewage Treatment Plant Phase II and Auxiliary Pipeline Works

Project Impacting Environment Improvement Measures and Management Arrangement Period Factors Impact

Construction 1 effluent settling chamber for recycling the washing water will wastewater and Construction Water be set up within the work site,; 1 simple septic tank will be workers domestic established sewage The work site shall be closed; the dusty roads shall be sprayed with water; covering or closure measures should be used for Construction and transport and the transport route should be properly selected and Air transport dust speed of transport vehicles is limited; construction materials are covered or sprayed with water; onsite construction materials storage time should be minimized.

Hefei Municipal Research Institute of Environmental Protection 12 ADB Funded Hefei Urban Environment Improvement Project External Environment Monitoring Report

Exhaust pollution of automobiles Excellent maintenance to make sure that the flue gas discharged and construction from automobiles and machineries meet the emission standard machinery The construction machineries should be well maintained and Noise from the operated so that the working noise of machinery is minimized; construction the construction is thoughtfully scheduled and day work should Noise machinery and be arranged. No construction is allowed from 22:00~6:00. If transport vehicles necessary, set up the temporary sound-proof fence. Traffic route should be selected to avoid any residential area. Solid The transport of soil residue is strictly subject to the stipulations waste of the Administrative Measures of Hefei City for Building Waste Construction implemented as from September 1, 2004; the construction waste spoils and waste may be classified into the useful and non-useful. The useful part will be recovered, while the non-useful part will be shipped to Hefei Landfill Yard for treatment. Set up the green belt in and around the plant area. The coverable Waste gas for waste gas source should be covered and the biological Air sewage treatment deodorizing device should be used for absorption treatment. Strengthen the sludge management. Operation Noise from The high noise equipments will be arranged underground or Noise equipment underwater. Soundproof and acoustic materials should be used operation for the high noise equipment rooms. Solid Shipped to Hefei Sludge Disposal Center for centralized Sludge cakes waste treatment

4. Environment Protection Target and Environment Monitoring Plan

According to the EMP and relevant requirements specified in the Final Report of ADB funded PPTA of Hefei Urban Environment Improvement Project, the external environment monitoring will be conducted for a number of parameters (dust, odor, noise, sewage and solid water discharged from the workshop and work site, ground water pollution, soil corrosion, land impact, infectious diseases and occupational health) during the construction period and (overflow of the sewage treatment plant, ground water pollution, drainange, odor, noise, sludge treatment, sediment in the pipeline, safety) during the operation of the project upon completion. The Project’s environment protection targets and external environment monitoring plans for different works are as follows: Table 4-1 List of Environment Protection Targets Environmental Environmental Sr. No. Environment Protection Targets Factors Functions Nanfei River Category-V Banqiao River Category-V 1 Water environment Sili River Category-V Ershibu River Category-V Chaohu Lake (Hefei Section) Category-III 2 Atmosphere environment Siquan Garden Subdistrict Category-II CACTVC Category-II Erfangying Category-II Dongfeng Primary School Category-II

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Fangdaying Village Category-II Wangtang Village Category-II Longshan Villa Settlement Buildings Category-II Scattered Households Category-II Xiafan Village Category-II Hefei Police Officer College Category-II Tangxi Village Category-II CACTVC Category-I Fangdaying Village Category-I Wangtang Village Category-I Longshan Villa Settlement Buildings Category-I Siquan Garden Subdistrict Category-II Yanhe Village Category-II Provincial School of Industry & Category-II Commerce Aviation Residence Category-II Wanshen Science and Technology Category-II School Township Enterprise School Category-II Part of Shicheng Village north of Category-II 3 Acoustic environment Railway Bridge Zhantang Village Category-II Yiwu Small Commodity Market Category-II Part of Zhongyoufang Village Category-II Zhaoshuwang Village Category-II Zhongyoufang Village Villager Category-II Committee Dongfeng Primary School Category-I Dongbianying Category-I Houwan Village Category-I Lixin Category-I Shenwan Category-I Wufangying Category-I Erfangying Category-I Tangxi Village Category-II

Table 4-2 Monitoring Schedule for Hefei Urban Sewage Pipeline System Improvement Project Sr. Monitoring Major Monitoring Content and Technical Requirement No. Element 1. Monitoring Location: work site; 1 Waste Water 2. Monitoring Items: COD, SS, pH, petroleum; 3. Monitoring Frequency: once every six months and twice every year 1. Monitoring Location: work site, dusty road; 2 Atmosphere 2. Monitoring Items: TSP; 3. Monitoring Frequency: once every six months and twice every year. 1. Monitoring Location: sensitive points within 150m of the work site; 3 Noise 2. Monitoring Items: Equivalent Sound Level A (Leq); 3. Monitoring Frequency: once every six months and twice every year.

Table 4-3 Monitoring Schedule for Comprehensive Renovation Project of Qingxi Road

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Landfill Sr. Monitoring Major Monitoring Content and Technical Requirement No. Element 1. Monitoring Location: 1 sampling section located 100m upstream of Nanfei River, 1 sampling section located at sewage outlet of the landfill, 1 sampling section located 1 Surface water 500m and 1 sampling section located 1000m downstream 2. Monitoring Items: pH, TP, COD, BOD5, NH3-N; 3. Monitoring Frequency: once for normal and once for dry seasons every year 1. Monitoring Location: 1 background well, at 50m upstream of Nanfei River; 1 diffusion well at 30 m downstream of Nanfei River and 1 diffusion well at 30m south of Qingxi Road; 1 monitoring well for the ground water well within the site; 2 Ground Water 2. Monitoring Items: pH, fluoride, total hardness, cyanide, Hg, Cu, As, total coliform group and bacterial count; 3. Monitoring Frequency: once for normal and once for dry seasons every year 1. Monitoring Location: outlet of leachate regulating tank; 3 Leachate 2. Monitoring Items: COD, BOD5, NH3-N, TP, SS, Hg, Pb, As, Cd; 3. Monitoring Frequency: once every half year. 1. Monitoring Location: 1 point for Management Zone Office and 1 point for Police Officer College west of the site; 4 Atmosphere 2. Monitoring Items: TSP, CH4, SO2, H2S, NH3; 3. Monitoring Frequency: once every half year. 1. Monitoring Location: points around the site and Management Zone Office; 5 Noise 2. Monitoring Items: Equivalent Sound Level A (Leq); 3. Monitoring Frequency: once every half year 1. Monitoring Location: 3 points for covering layer after the closure of the site; 6 Soil 2. Monitoring Items: pH, Cu, As, Zn, Cd, pb, Hg; 3. Monitoring Frequency: once every year. 1. Monitoring Location: 3 points for vegetation on the covering layer after the closure of the site; 7 Vegetation 2. Monitoring Items: type of vegetation, annual growth or coverage, landscape, biomass; 3. Monitoring Frequency: once every year

Table 4-4 Monitoring Schedule for Sili River, Banqiao River and Ershibu River Comprehensive Project Sr. Monitoring Major Monitoring Content and Technical Requirement No. Element 1. Monitoring Location: at least three sampling points for dredging and excavation Quality of Surface site; 1 Water (Sediment 2. Monitoring Items: pH, TN, TP, BOD5, COD, Pb, Cr, Zn; Dredging Area) 3. Monitoring Frequency: sampling at each sampling point once every 6 months, plus before dredging, during construction, and after dredging 1. Monitoring Location: three sampling wells, of which the first one is located upstream of the dumping yard as per flowing direction of ground water, as the reference well, the second is located downstream of the dumping yard as per flowing direction of ground water, as the pollution monitoring well and the third pollution diffusion monitoring well is located around the dumping yard, which is the most Quality of ground 2 likely to cause diffusing impact. water 2. Monitoring Items: TN, TP, Cr, Cu, Zn, bacterial count, total coliform group, etc; 3. Monitoring Frequency: sampling once quarterly from the time when the dumping yard starts dumping until one year after the blowing and filling is completed in the dumping yard. Then for three years after that, sampling once in the wet season and once in the dry season.

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1. Monitoring Location: 1 point located 50m downwind of each sediment dumping Air odor at the yard. 3 sediment dumping 2. Monitoring Items: TSP, SO , H S, NH ; yard 2 2 3 3. Monitoring Frequency: once every six months and twice every year 1. Monitoring Location: work site boundary; 2. Monitoring Items: Equivalent Sound Level A (Leq); 4 Noise 3. Monitoring Frequency: once every half year for at least 10 minutes either day or night for each sample 1. Monitoring Location: at least 3 observation points; 2. Monitoring Items: type of composition of submerged plants, composition of Ecological plankton and benthos, dominant species and biomass, analysis of impact on their 5 monitoring restoration due to the construction; as for the trees, flowers and other plants in the dumping yard, monitor the content of heavy metals in the fruit, flower and leaf. 3. Monitoring Frequency: once every year for three consecutive years

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Table 4-5 Monitoring Schedule for Shiwuli River Phase I, Wangtang Sewage Treatment Plant Phase II and Pipeline Works Sr. Monitoring Major Monitoring Content and Technical Requirement No. Element 1. Monitoring Location: site camp; 1 Waste Water 2. Monitoring Items: COD, SS, pH, petroleum; 3. Monitoring Frequency: once every six months

1. Monitoring Location: site camp and management office; 2 Atmosphere 2. Monitoring Items: TSP; 3. Monitoring Frequency: once every six months

1. Monitoring Location: work site boundary; 3 Noise 2. Monitoring Items: Equivalent Sound Level A (Leq); 3. Monitoring Frequency: once every six months

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Table 4-6 Monitoring Schedule for Hefei Chaohu Lake Bank Ecological Environment Comprehensive Control Works Sr. Monitoring Major Monitoring Content and Technical Requirement No. Element

Waste water 1. Monitoring Location: Wastewater from construction workers; 1 during 2. Monitoring Items: pH, SS, petroleum, COD, etc; construction 3. Monitoring Frequency: sampling once every half year during construction.

1. Monitoring Location: 500m upstream of the mouth of Paihe River in Feixi County; 500m east of the mouth of Shiwuli River in Baohe District; 500m west of 2 Sediment blow-fill the mouth of the Linshi River in Feidong County; 2. Monitoring Items: total Hg, total Cd, total As, total Cu, total Pb, total Cr, etc.; 3. Monitoring Frequency: once in December of the second year during construction 1. Monitoring Location: typical industrial areas and sensitive points of environment, Atmosphere mainly Liuhe River. environment 3 2. Monitoring Items: TSP; during 3. Monitoring Frequency: once in winter and once in summer every year, three construction consecutive days. 1. Monitoring Location: work site boundary; 2. Monitoring Items: Equivalent Sound Level A (Leq); 4 Noise 3. Monitoring Frequency: once every half year; at least 10 minutes either day or night for each monitoring during construction 1. Monitoring Location: lake burst control zone, lake-ring wave-control forest zone, lake-ring building area, borrowing area, flood-control road area, and affected area on both sides of the dike; 2. Monitoring Items: area and volume of soil erosion, growth of vegetation, effect 5 Soil erosion and benefit of water and soil conservation; volume of soil erosion at the slope area of cofferdam, volume of soil erosion at the slope areas of the roads; volume of soil erosion at the construction spoiling area, volume of soil erosion after land restoration; growth and development of forest in the area, resistance observation. 3. Monitoring Frequency: once every year.

5. Environment Monitoring

According to the environmentally sensitive sites specified in the environment impact reports for different sub-projects under Hefei Urban Environment Improvement Project and the possible major environmental impact of the Project during the construction and with reference to the actual progress of the works, we have conducted field survey and environment monitoring for the ongoing Hefei Urban Environment Improvement Project. The tasks completed are as follows: 1. The specific location and time for monitoring is defined according to the Project’s actual work progress, construction progress and alignment. 2. The monitoring locations are focused on sensitive sites such as residential areas, schools, etc. While covering the protection targets specified in the environment impact report, with reference to the population density, construction progress, site, and progress of the project, the monitoring locations were selected at the representative places and sites. 3. During monitoring, records will be taken, including contractors, major works, timetable of work, and major construction equipments.

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5.1 Surface Water Environment Monitoring

1. Wastewater from construction Monitoring parameters: pH, SS, COD, petroleum. Monitoring location: Construction wastewater of Shiwuli River Sewage Treatment Plant Phase I, Wangtang Sewage Treatment Plant Phase II, Hefei Chaohu Lake Bank Ecological Environment Comprehensive Control Works during construction period. Monitoring Time: sampling respectively at 10: 00, 15: 00 and 18: 00, December 9, 2008. 2. Water quality of Nanfei River

Monitoring parameters: pH, TP, COD, BOD5, NH3-N. Monitoring Location: 1 sampling located at 100m upstream of Nanfei River, 1 sampling located at sewage outfall of the landfill, 1 sampling located at 500m downstream and 1 sampling located 1000m downstream. Monitoring Time: once every day, for three consecutive days from December 10 to 12, 2008. 3. Surface water quality of Sili River and Banqiao River

Monitoring parameters: pH, TP, COD, BOD5, NH3-N. Monitoring Location: Bridge of Linquan Road downstream,Sili River and Railway Bridge overflow dam downstream, Banqiao River. Monitoring Time: once every day, for three consecutive days from Devember 15 to 17, 2008. 5.2 Groundwater Monitoring parameter: pH, fluoride, total hardness, cyanide, Hg, Cu, As, total coliform group and bacterial count. Monitoring Location: 1 baseline well, at 50m upstream of Nanfei River; 1 diffusion well at 30 m downstream of Nanfei River and 1 diffusion well at 30m south of Qingxi Road; 1 monitoring well for the ground water well within the site; Monitoring Time: sampling once at each monitoring point on December 8, 2008.

5.3 Leachate

Monitoring parameters: COD, BOD5, NH3-N, TP, SS, Hg, Pb, As, Cd. Monitoring Location: leachate regulating tank. Monitoring Time: sampling once on December 10, 2008.

5.4 Atmosphere

1 Construction dust Monitoring parameters: TSP.

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Monitoring Location: sensitive sites near Shiwuli River Phase I, Wangtang Sewage Treatment Plant Phase II, and work site camp of Chaohu Lake Bank Comprehensive Control Project. Monitoring Time: TSP sampling for at least 45 minutes per hour, at least 12h per day for three consective days from December 8 to 10, 2008. 2. Atmosphere environment monitoring of Comprehensive Renovation Project of Qingxi Road Landfill during operation

Monitoring parameters: TSP, CH4, SO2, H2S, NH3. Monitoring Location: 1 point located at the Management Zone Office and 1 point located at the Police Officer College west of the yard. Monitoring Time: sampling for monitoring for 5 consecutive days from December 1 to 5, 2008, subject to the duration specified in Environmental Air Quality Standards; sampling six times per day for average density per hour and once for odor factor. 3. Air quality at the dreadging storage site

Monitoring parameters: TSP, SO2, H2S, NH3. Monitoring Location: 1 monitoring point at 50m downwind of each dredging storage site. Monitoring Time: sampling for monitoring for 5 consecutive days from December 8 to 12, 2008, subject to the duration specified in Environmental Air Quality Standards; sampling six times per day for average density per hour and once for odor factor.

5.5 Noise

Monitoring parameters: Equivalent Sound Level A (Leq). Monitoring Location: sensitive points within 150m of the work site boundary and the management area office of the Comprehensive Renovation Project of Qingxi Road Landfill. Monitoring Time: twice during day time on December 18, 2008. 5.6 Soil Monitoring parameters: pH, Cu, As, Zn, Cd, pb and Hg. Monitoring Location: 3 points for covering layer after the closure of the site; Monitoring Time: sampling once on December 11, 2008. 6 Monitoring Method and Evaluation Standard According to the relevant national regulations, environmental function zoning of Hefei and Environment Impact Reports for Hefei Urban Environment Improvement Project environment, the analytical method and evaluation standards of the environment monitoring are summarized (see Table 6-1).

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Table 6-1 List of Monitoring Analytical Methods and Evaluation Standards

Environmental Sampling and Analyzing Method Evaluation Standards Elements

Technical Codes for Surface Water and Sewage Monitoring (HT/T91-2002), Surface Water Environment Design Specifications for Water Quality Quality Standards (GB3838-2002): Sampling Method (GB12997-91), Category-V Standards; Sewage Surface Water Technical Guidance for Water Quality Comprehensive Discharge Sampling (GB12998-91), Technical Standards (GB8978-1996): Class-I Specifications for Water Quality Sampling, Standards Sample Storage and Management (GB12999-91).

Technical Codes for Ground Water Ground Water Quality Standards Ground Environment Monitoring (GB/T14848-93): Category-III Water (HJ/T164—2004) Standards

Municipal Solid Waste Landfill Municipal Solid Waste Landfill Pollution Pollution Control Standards Leachate Control Standards (GB16889-2008) (GB16889-2008): Table 2 Water Pollutant Discharge Density Limit

Environmental Air Quality Standards (GB3095—1996) Class-II, Odorous Pollutant Discharge Standards Environmental Air Quality Standards (GB14554-93): Class-II Atmosphere (GB3095—1996) Standards, Design Sanitary Standard for Industrial Enterprises (TJ36—79): Maximum Density for Residential Areas

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Environmental quality standard for noise (GB3096—2008): “Category I and II Area” Standard, Noise Limit for Construction Site Environmental quality standard for noise Noise Boundary (GB12523—90), (GB3096-2008) Emission standard for industrial enterprises noise at boundary (GB12348-2008): Category-II Standard

Soil Environment Quality Standard Technical Codes for Soil Environment Soil (GB15618-1995): Category-II Monitoring (HJ/T166—2004) Standard

7 Conclusion and Evaluation

7.1 Findings of Surface Water Environment

1 Findings from Construction Wastewater Monitoring The the monitoring findings of construction wastewater is refered to Table 7-1:

Table 7-1 List of Findings from Construction Wastewater Monitoring Unit: mg/l (except for pH)

Monitoring Location Monitoring Time pH SS COD Petroleum

Wastewater outlet of 10: 00 7.12 66 80 3.4 Shiwuli River Phase I 15: 00 7.56 65 81 3.1 work site 18: 00 7.17 60 87 3.8 Wastewater outlet of 10: 00 6.82 64 82 1.4 Wangtang Sewage Treatment Plant Phase II 15: 00 6.87 58 89 1.2 work site 18: 00 7.04 62 76 1.7 Wastewater outlet of 10: 00 7.47 68 95 4.6 Hefei Chao Lake Bank Ecological Environment 15: 00 7.38 66 91 4.1 Comprehensive Control Works work site 18: 00 7.52 65 92 4.4 GB8978-1996: / 6~9 70 100 5 Category-I Standard From the findings in Table 7-1, it is known that with the relevant environment management measures taken for the construction wastewater of the Project, the major pollutants in wastewater can reach the discharge requirement specified in the Sewage

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Comprehensive Discharge Standards (GB8978-1996): Category-I Standard. 2. Findings from Nanfei River water quality monitoring The findings from Nanfei River water quality monitoring are refered to in Table 7-2: Table 7-2 List of Nanfei River Water Quality Monitoring Unit: mg/l (except for pH) Monitoring Monitoring pH TP COD BOD NH -N location Date 5 3

Dec. 10 7.19 0.018 51.4 7.9 3.13 100m upstream of Dec. 11 Nanfei River 7.24 0.026 53.6 9.2 3.68

Dec. 12 7.09 0.021 56.1 8.4 2.72

Dec. 10 Sewage outlet of 7.33 0.031 57.3 8.1 4.34 the landfill and Dec. 11 500m 7.42 0.028 58.9 9.1 3.56 downstream Dec. 12 7.67 0.045 54.8 8.3 3.42

Dec. 10 Sewage outlet of 7.02 0.029 52.2 8.5 3.86 the landfill and Dec. 11 1000m 7.16 0.035 46.9 7.9 3.53 downstream Dec. 12 6.81 0.034 47.7 7.9 2.70 GB3838-2002: Category-V / 6~9 0.4 40 10 20 Standard From the findings shown in Table 7-2, it is observed that for the water quality of Nanfei River can reach Category-V Standard, except for the COD, which exceeds Surface Water Environment Quality Standards (GB3838-2002): Category-V Standard. Comparatively, before the implementation of Qingxi Road Landfill Comprehensive Renovation Project, COD, NH3-N, TP in the water of Nanfei River exceeded the standard to different extents. Thus the water quality of Nanfei River appears to have improved. 3. Findings from Sili River and Banqiao River water quality monitoring The findings from the water quality monitoring in Sili and Banqiao River are refered to in Table 7-3: Table 7-3 List of Sili River and Banqiao River Water Quality Monitoring Unit: mg/l (except for pH) Monitoring Monitoring pH TP COD BOD NH -N location Date 5 3 Bridge of Linquan Road Dec. 15 7.23 0.013 53.5 17.2 18.5 downstream,Sili River Dec. 16 7.27 0.011 55.7 22.1 17.2

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Dec. 17 7.31 0.018 62.3 19.2 17.4

Dec. 15 Railway Bridge 7.14 0.025 52.7 13.5 17.9 overflow dam Dec. 16 downstream, 7.22 0.028 60.4 16.9 18.0 Banqiao River Dec. 17 7.09 0.023 55.6 15.6 18.2 GB3838-2002: Category-V / 6~9 0.4 40 10 20 Standard

From the findings in Table 7-3, it is observed that COD and BOD5 exceed Surface Water Environment Quality Standards (GB3838-2002): Category-V Standard. The maximal excedance multiples are 0.56 and 1.21, respectively. Other monitoring parameters can meet the Surface Water Environment Quality Standard (GB3838-2002): Category-V Standard.

7.2 Findings from Ground Water Environment Monitoring

The findings from the ground water environment monitoring is refered to in Table 7-4: Table 7-4 List of findings from ground water environment monitoring Unit: mg/l (except for pH) Total

Total colifor Monitoring Monitoring Fuorid Cyanid bacteria pH hardnes Hg Cu As m location time e e l count s group (Nr/l) (Nr/l) Background Dec. 8 well 7.85 0.48 137 0.001 0.00013 0.10 0.009 44 320 Diffusion Well Dec. 8 1 7.80 0.53 127 0.001 0.00010 0.10 0.011 58 460 Diffusion Well Dec. 8 2 7.89 0.49 122 0.001 0.00011 0.10 0.009 50 512 Monitoring Dec. 8 Well 7.75 0.45 133 0.001 0.00011 0.10 0.010 55 500 GB/T14848-93: 6.5- Category-III / ≤1.0 ≤450 ≤0.05 ≤0.001 ≤1.0 ≤0.05 58 ≤100 8.5 Standard From the findings in Table 7-4, it is observed that except the bacteriological index (bacterial count and total coliform group), which exceeds the standard, all other indices of parameters can meet the water quality requirement of the Ground Water Quality Standard (GB/T14847—93): Category-III. The bacteriological index exceeding the standard means that the regional shallow ground water has been polluted.

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7.3 Findings from Leachate Environment Monitoring

The findings from the leachate environment monitoring is refered to in Table 7-5: Table 7-5 List of finding from the leachate environment monitoring Unit: mg/l

BOD Items COD NH3-N TP SS Hg Pb As Cd 5

Leachate regulating -4 tank 7,890 2,410 621 4.1 110 1.37×10 0.05 0.03 0.004

Reference with 100 30 25 3 30 0.001 0.1 0.1 0.01 GB16889-2008Table 2

The leachate collection system of the Qingxi Road Municipal Solid Waste Landfill consists of leachate collection well, leachate collection pipeline and leachate regulating tank. In the low-lying areas of the Landfill, the leachate collection wells are set up every 100m, connected through HDPE pipes with the leachate regulating tank for discharging into the Wangtang Sewage Treatment Plant. According to the relevant regulations of the Municipal Solid Waste Landfill Pollution Control Standard (GB16889-2008), the existing municipal waste landfill can not meet the water pollution standards specified in Table 2, and once the following conditions are satisfied, the leachate will be sent to the municipal sewage treatment plant for treatment: (1) With the leachate treated at the landfill, the density of such pollutants as Total Hg, Total Cd, Total Cr, Cr (VI), Total As and Total pb reach the density limit specified in Table 2; (2) The total volume of leachate treated daily by the city sewage treatment plant does not exceed the sewage treatment volume by 0.5%, the rated sewage treatment capacity of the city secondary sewage treatment plant; (3) The leachate of municipal waste should be completely discharged to the city sewage treatment plant; (4) The leachate treatment will not have negative impact on the operation of city sewage treatment plant. From the findings in Table 7-5, it is observed that with the leachate treated in the leachate regulating tank at the landfill, the density of such pollutants as Total Hg, Total Pb, Total As and Total Cd can reach the discharge density limit of water pollutants specified in Table 2 of the Municipal Solid Waste Landfill Pollution Control Standards (GB16889-2008) and can satisfy the above conditions before being sent in a closed container to Wangtang Sewage Treatment Plant for treatment.

7.4 Findings from Atmosphere Environment Monitoring

1. Findings from the construction dust monitoring The findings from the construction dust monitoring is refered to in Table 7-6:

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Table 7-6 List of Findings from Construction Dust Monitoring Unit: mg/m3 Monitoring location Monitoring Date TSP Dec. 8 0.261 Xiaofan Village near Shiwuli Dec. 9 0.266 River Sewage Treatment Plant Dec.10 0.278 Dec. 8 0.230 Longju Villa, Wangtang Dec. 9 0.233 Phase II Dec.10 0.230 Tangxi Village, Chaohu Lake Dec. 8 0.220 Bank Ecological Renovation Dec. 9 0.217 Project Dec.10 0.228 GB3095—1996 Class-II / 0.30 From the findings in Table 7-6, it is observed from the relevant environment management measures taken at the sensitive atmosphere environment points involved in the work site, that the daily average density of TSP meets Environment Air Quality Standard (GB3095—1996) Class-II Standard, without exceeding the standard. 2. Findings from the atmosphere environment monitoring during the operation of Comprehensive Renovation Project of Qingxi Road Landfill The findings from atmosphere environment monitoring during the operation of Comprehensive Renovation Project of Qingxi Road Landfill is refered to in Table 7-7: Table 7-7 List of findings from atmosphere environment monitoring during the operation of Comprehensive Renovation Project of Qingxi Road Landfill Unit: mg/m3

Monitoring Monitoring TSP SO HS NH location Date 2 2 3

Dec. 10 0.088 0.052 0.001 0.03

Dec. 11 0.084 0.047 0.001 0.03 Management Dec. 12 Zone Office 0.097 0.041 0.001 0.03

Dec. 13 0.112 0.054 0.001 0.03

Dec. 14 0.104 0.038 0.001 0.03

Dec. 10 0.120 0.046 0.001 0.03

Dec. 11 0.111 0.049 0.001 0.03 Police Officer Dec. 12 0.108 0.040 0.001 0.03 College Dec. 13 0.110 0.041 0.001 0.03

Dec. 14 0.110 0.040 0.001 0.03 Evaluation / 0.30 0.15 0.01 0.2 Standard

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From the findings in Table 7-7, it is observed from the environment management measures taken at the Comprehensive Renovation Project of Qingxi Road Landfill during the operation, at the sensitive atmosphere environment points involved after closure, the daily density value of TSP, SO2 meets the Environment Air Quality Standard (GB3095—1996) Class-II Standards, CH4, H2S, NH3 meets the Design Sanitary Standard of Industrial Enterprises (TJ36—79): Maximum Density for Residential Area, without exceeding the standard. 3. Findings from the sediment dumping yard air odor monitoring The findings from the sediment dumping yard air odor monitoring is refered to in Table 7-8: Table 7-8 List of findings from the sediment dumping yard air odor monitoring Unit: mg/m3

Monitoring Monitoring date TSP SO HS NH location 2 2 3

Dec. 8 0.090 0.022 0.001 0.01 50m downwind of the dump Dec. 9 yard for the 0.100 0.024 0.001 0.01 section of Sili Dec. 10 River from 0.109 0.025 0.001 0.01 Dangshan Road to Railway Dec. 11 0.110 0.033 0.001 0.01 Bridge Dec. 12 0.112 0.026 0.001 0.01

Dec. 8 0.081 0.029 0.001 0.01

Dec. 9 50m downwind 0.078 0.027 0.001 0.01 of No. 1 Dump Dec. 10 Yard of 0.080 0.021 0.001 0.01 Banqiao River Dec. 11 0.077 0.030 0.001 0.01

Dec. 12 0.079 0.028 0.001 0.01 Evaluation / 0.30 0.15 0.1 2 Standard

From the findings in Table 7-8, it is observed that the daily density of TSP, SO2 50m downwind of the dredging storage site meets the Environment Air Quality Standard (GB3095—1996) Class-II Standard and H2S, NH3 meets the Odor Pollutant Discharge Standards GB14554—93): Class-II Standard, without exceeding the standards.

7.5 Findings from noise environment monitoring

The daytime noise monitoring (no work at night) has been conducted at the sensitive noise environment points involved in the Project, the findings are refered to

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in Table 7-9: Table 7-9 List of Findings from Noise Environment Monitoring

Noise Monitoring Value (Daytime) Number of Names Testing Points 1st 2nd

1＃ Qingxi Road Landfill Office 52.6 52.2

2＃ Police Officer College 52.3 52.7

3＃ Siquan Garden Subdistrict 57.5 57.2

4＃ CACTVC 58.9 58.1

5＃ Xiafan Village 53.7 53.3

6＃ Fangdaying Village 54.4 54.2

7＃ Wangtang Village 54.7 54.5

8＃ Longju Villa 53.0 53.7

9＃ Xitang Village 52.4 52.7

According to the findings from the environment noise monitoring in Table 7-9, it is observed that the sensitive points involved in the Project can all meet the Environmental quality standard for noise (GB3096-2008): Class I and II Standards, indicating that during the construction, the Project has undertaken relevant environment management measures and ensured the noise of work site boundary is lower than the specified limit, without any major impact on the surrounding sensitive noise points.

7.6 Findings of Soil Environment Monitoring

The findings of soil environment monitoring are refered to in Table 7-10: Table 7-10 List of Findings from Soil Environment Monitoring

Monitoring pH Cu As Zn Cd Pb Hg Location

Point 1＃ of Soil Layer after Closure 6.75 33 20 122 0.27 190 0.31

Point 2＃ of Soil Layer after Closure 6.70 37 22 125 0.28 198 0.35

Point 3＃ of Soil Layer after Closure 6.94 38 21 137 0.28 187 0.33

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GB15618-1995 6.5≤pH≤7.5 100 25 250 0.30 300 0.5 II Standard

From the findings in the above table, it is observed that the soil quality is comparatively good at the 3 existing monitoring points. The soil environment quality at all the points can meet the requirement of the Soil Environment Quality Standard (GB15618-1995): Class-II Standard

7.7 Monitoring Summary

According to the field survey and environment monitoring during the implementation, Hefei Urban Environment Improvement Project has followed the relevant requirements specified in the Environment Impact Report of the Project and has undertaken relevant environment management measures. The actual effects are refered to inTable 7-11:

Table 7-11 List of Implementation and Effects of Project Environment Management Finding Sr. Environment Management Pollution Source upon Effect No. Measures taken monitoring The work site is closed; 1 waste water No discharge Construction sediment pool will be set up within work Up to 1 exceeding the waste water site, for recycling the washing water; 1 standard standard simple septic tank will be established. Improve the leachate anti-seepage system The leachate is and collection system; the collected Heavy-metal effectively leachate is delivered to Wangtang 2 Leachate ion up to prevented from Sewage Treatment Plant for centralized standard entering Nanfei treatment and discharged according to River standard The work site is closed; dusty roads are No large-area sprayed with water; covering or closure dust impact and measures are used for transport and the no reduction in transport route is properly selected and Up to 3 Construction dust air quality of the speed of transport vehicles is limited; the standard nearby construction materials should be covered environment or sprayed with water; onsite construction observed materials storage time is minimized. Livelihood stove No soot emission Smoking fuels are prohibited and Up to 4 discharge of observed from the liquefied fuel is used standard contractors boilers Limited impact the landfill gas exhausting system has on the Discharge odor been completed for operation, and the Up to 5 surrounding pollutants combustion system is also put into standard environment air service quality The construction machineries should be Boundary noise Noise at the work 6 well maintained and operated so that the Up to lower than the site boundary working noise of machinery is standard specified limit Noise at the noise minimized; the construction is Up to No affect on the 7 sensitive points thoughtfully scheduled and day work standard normal life of involved at work should be arranged. No construction is residents and no

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site allowed from 22:00~6:00. If necessary, complaints from set up the temporary sound-proof fence. the public Traffic route should be selected to avoid any residential area. The soil environment quality is the Planting should be quickly undertaken same or better Soil of the after the landfill is completed; during the than before and covering layer storm, the damaged working area and Up to 8 after the closure after closure of loose soil layer should be covered with standard of the landfill, no the landfill covering net, straw mats, etc. to prevent residual soil erosion. heavy-metals exceeding the standard The transport of soil residue is strictly subject to the stipulations of the Administrative Measures of Hefei City for Building Waste implemented as from Construction No impact on the September 1, 2004; the construction Up to 9 spoils and external waste may be classified into the useful standard building waste environment and non-useful. The useful part will be recovered, while the non-useful part will be shipped to Hefei Landfill Yard for treatment.

8. Conclusion and Recommendation

Conclusion： As shown in the second external environment monitoring date conducted for ADB funded Hefei Urban Environment Improvement Project, for the sub-projects in both under construction and completed, the IAs have implemented the relevant environment management measures proposed in the environment impact report of the Project and paid close attention to the possible unfavorable impacts on the environment during construction. According to the finding of the external environment monitoring, the Project has undertaken relevant measures to minimize the unfavorable impacts on the environment. The external environment monitoring conclusion is as follows: 1. Relevant environmental measures have been undertaken for the wastewater from the construction, without any discharge of wastewater exceeding the standard. The Sili River and Banqiao River component has been mostly completed. After taking environmental measures, the water quality of Sili River and Banqiao River has improved downstream of the construction. However, the two rivers are still exceeding wastewater discharge standards. The reason for of sub-standard water quality are high levels of COD and BOD5; 2. At the Qingxi Road Landfill, the leachate of municipal solid waste is treated in the leachate regulating pond. With the pollutants such as heavy metals meeting the standard, the leachate is shipped in a closed container to Wangtang Sewage Treatment Plant for treatment, effectively preventing the leachate of solid waste from entering

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Nanfei River and causing any unfavorable impact on Nanfei River. Thus the water quality of Nanfei River has improved; 3. The landfill gas pipeline and combustion system has been completed, and with the relevant environment management measures undertaken at the construction sites and Comprehensive Renovation Project of Qingxi Road Landfill, the environmental air quality has not deteriorated in the adjacent areas; 4. During construction, the Project has undertaken relevant environment management measures and ensured that the noise of the work site is lower than specified rate, without causing any major impact on the surrounding noise-sensitive points; 5．The works have been mostly completed according to the project scheduling, except Ershibu River Comprehensive Control Works. Recommendations: 1. The contractors should carry out quality construction, strengthen the supervision and management and reduce the impact on the surrounding environment; 2. The contractors should continue to strictly implement the EMP and reduce the unfavorable impacts of wastewater, dust and mechanical noise on the environment during construction; 3. The contractors should strengthen the training for the contractors’ personnel for environmental impact management and enhance their consciousness of environment protection so as to ensure the healthy and orderly implementation of the Project.

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