5. Environmental Impact Assessment and Mitigation Measures

Public Disclosure Authorized

World Bank Financed Guilin Lingui District (West) WWTP Upgrading and Improvement Project

Public Disclosure Authorized

Environmental Impact Report

Public Disclosure Authorized

Executive agency: Guilin Sewerage Company

Prepared by: Beijing Zhongzihuayu Environmental Public Disclosure Authorized Protection Technology Co., Ltd.

Certificate No.: State Class A EIA Certificate No. 1051

Date: December 2018 Contents

1. Introduction ...... 1

1.1 Project Introduction ...... 1

1.2 Rationale ...... 2

1.3 Environmental functional zoning and evaluation criteria ...... 4

1.4 Environmentally sensitive sites and protection targets ...... 10

2. Engineering Analysis ...... 11

2.1 Overview of existing facilities ...... 11

2.2 Overview of proposed project ...... 12

3. Due Diligence of Linked Projects ...... 20

3.1 Towngas China (Guilin) Co., Ltd...... 20

3.2 Guilin Shangyao WWTP sludge disposal project ...... 21

3.3 Guilin Lingui District (East) WWTP ...... 23

4. Environmental Baseline Survey ...... 25

4.1 Environmental Performance Survey of the Existing Facilities ...... 25

4.2 Natural Environment ...... 27

4.3 Social Environment ...... 29

4.4 Status Quo Investigation and Evaluation of Environmental Quality ...... 31

5. Environmental Impact Assessment and Mitigation Measures ...... 39

5.1 Environmental impact analysis and mitigation measures in the construction period ...... 39

5.2 Environmental impact analysis and mitigation measures in the operation stage ...... 46

5.3 Equipment maintenance and management measures ...... 53

5.4 Emergency response measures for fuel gas leakage ...... 54

6. Social impacts of land acquisition and resettlement ...... 55

7. Alternative Analysis ...... 56

7.1 Purposes and principles ...... 56

I 7.2 With-/Without-project analysis ...... 56

7.3 Comparison of alternatives ...... 57

8. Public participation and information disclosure ...... 64

8.1 Purposes, approaches and scope of public participation ...... 64

8.2 Information disclosure ...... 64

8.3 Public participation ...... 68

9. Environmental Management Plan ...... 74

9.1 Purposes of Environmental Management Plan ...... 74

9.2 Environment Management Agencies and Their Responsibilities ...... 74

9.3 Environmental Impacts and their Mitigation Measures ...... 78

9.4 Environmental Monitoring Plan...... 86

9.5 Monitoring training plan ...... 89

9.6 Reporting mechanism nd requirements for implementation of the

Environmental Management Plan ...... 92

10. EIA Conclusions and Recommendations ...... 94

Attached Figures

Figure 1: Project Location Map

Figure 2: Project Layout Plan

Figure 3: Process Flowchart of the Project

Figure 4: Map of Local Environment and Distribution of Environmental Protection Targets in the Project Area

Figure 5: Map of Distribution of Air and Noise Environment Status Quo Monitoring Sites

Figure 6: Map of Distribution of Surface Water Environment Status Quo Monitoring Sites

Figure 7: Location Map of Linked Projects Annexes

II Annex 1: Approval by Guangxi Zhuang Autonomous Region Environmental Protection Bureau of the Environmental Impact Report of Guangxi Guilin Xicheng District Wastewater Management Project

Annex 2: Approval by Guangxi Zhuang Autonomous Region Environmental Protection Department of the Request for Final Acceptance of Environmental Protection of Guangxi Guilin Xicheng District Wastewater Management Project

Annex 3: Approval by Guilin Lingui District Environmental Protection Bureau of the Environmental Impact Report of Lingui District (West) WWTP Upgrading and Improvement Project

Annex 4: Approval by Guilin Municipal Environmental Protection Bureau of the Environmental Impact Assessment Report of Lingui New District WWTP Upgrading, Improvement and Modification Project

Annex 5: Quality Status Monitoring Report of Air Environment

Annex 6: Quality Status Monitoring Report of Surface Water Environment

Annex 7: Quality Status Monitoring Report of Acoustic Environment

Annex 8: Approval of the Environmental Impact Assessment Report of Guilin Shangyao WWTP

Annex 9: Approval of Final Acceptance of Environmental Protection of Guilin Shangyao WWTP

Annex 10: Sludge Test Reports of Lingui District WWTP

III 1. Introduction

1.1 Project Introduction Accompanying the relocation of Guilin Municipal Government to Lingui District and the gradual settlement of various enterprises into Guilin Xicheng Economic Development Zone is the growth of working and residential population in Lingui District and the resulted increase of domestic sewage. Lingui District Wastewater Treatment Plant (WWTP) is responsible for collection and treatment of domestic sewage in Lingui District. Since it was put into operation in 2008, many WWTP equipment have suffered from various degrees of damage or aging, resulting in a decline in sewage treatment efficiency and consequent impacts, to a certain extent on the sewage treatment work. The increase of resident population of Lingui District has been accompanied with the increase of sewage and sludge. As a result, the existing treatment process of the WWTP is found difficult to satisfy the new national requirements of environmental protection. According to the provisions of the National Water Pollution Prevention and Control Plan and the Work Arrangements of Guilin Municipality in Implementing the Water Pollution Prevention and Control Action Plan, the effluent of the municipal WWTPs must satisfy Class 1A standard by the end of 2018. Therefore, the construction of the Guilin Municipal Wastewater Treatment Plant (West) Upgrading and Renovation Project has become very necessary.

Lingui District Wastewater Treatment Plant is divided into two parts, the East WWTP and the West WWTP. The East WWTP has a treatment capacity of 30,000 tons/day and adopts the A2O process to achieve an effluent quality specified in the “Discharge Standard of Pollutants for Municipal WWTPs” (GB18918-2002). Formerly Lingui Xicheng District Wastewater Treatment Plant built in August 2005 and completed and put into operation in December 2008, it adopts the CAST process and has a treatment capacity of 30,000 m3/d to achieve effluent quality standard of Class 1B specified in the “Discharge Standard of Pollutants for Municipal WWTPs” (GB18918-2002). However, due to the outdated equipment in the West WWTP, its treatment capacity can no longer meet the needs of Lingui District. Therefore, it is urgently needed to upgrade and improve Lingui District (West) Wastewater Treatment Plant and replace the old equipment and implement enclosed deodorization of the related facilities. The East and West WWTPs are jointly responsible for treatment of wastewater in Lingui District, with the West WWTP mainly collecting domestic sewage in the urban area while the East WWTP mainly collecting sewage from parts of the urban area and Miaoling Community. About 95% of the sewage collected by the East WWTP is domestic sewage and the remaining 5% industrial wastewater (It is required that the industrial wastewater must reach Class 1 standard of the Integrated Wastewater Discharge Standard (GB8978-1996) before being connected to the municipal pipelines and transported to the municipal WWTPs for treatment).

In order to reduce the discharge of urban sewage pollutants, improve water environment quality of the watershed and guarantee physical health of residents and speed up economic development in the urban area of Guilin, Guilin Municipal Drainage Co., Ltd. intends to utilize loan proceeds from the World Bank to upgrade and improve Lingui District (West) WWTP, with no expansion of capacity involved. Therefore, the Project will be designed against the original treatment capacity of 30000m3/d of the original WWTP. Treatment processes of lifting pump station, coagulation sedimentation tank, fiber bundle deep-bed filter tank will be added to promote the wastewater treatment standard to Class 1A. In addition, the influent pump station, the find grid and sedimentation tank, the biological tank and the dewatering workshop will be deodorized and sludge of the WWTP will be subject to advanced treatment to minimize impacts from the Project on the local environment. 1.2 Rationale 1.2.1 Laws and regulations (1) Environmental Protection Law of the People’s Republic of China (amended in Year 2014); (2) Law of the People’s Republic of China on Environmental Impact Assessment (amended in Year 2016); (3) Law of the People’s Republic of China on Prevention and Control of Air Pollution (amended in Year 2015); (4) Law of the People’s Republic of China on Prevention and Control of Water Pollution (amended in Year 2017); (5) Law of the People’s Republic of China on Prevention and Control of Noise Pollution (amended in Year 1997); (6) Law of the People’s Republic of China on Prevention and Control of Environmental Pollution of Solid Wastes (amended in Year 2016); (7) Water and Soil Conservation Law of the Peoples Republic of China (amended in Year 2011); (8) Flood Control Law of the People’s Republic of China (amended in Year 2015); (9) Interim Methods for Public Participation in Environmental Impact Assessment (SEPA Huanfa Circular No. 2006[28], Feb. 14, 2006); (10) Methods for Public Participation in Environmental Protection (MoEE Decree No. (2018)4); (11) Notice on Strengthening Management of Environmental Impact Assessment of Construction Projects Utilizing Loans from International Financial Institutions (Huanjian Circular No. [1993]324); (12) Notice by the National Development and Reform Commission on Further Strengthening Management of Projects Utilizing Loans from International Financial Institutions (NDRC Foreign Investment Circular No. [2008]1269);

(13) Management Catalogue of EIA Categories of Construction Projects (April 2018); (14) Notice by the State Council on Printing and Issuing the Action Plan on Prevention and Control of Water Pollution (State Council Circular No. [2015]17).

1.2.2 Technical guidelines and specifications of EIA (1) Technical Guidelines on Environmental Impact Assessment – General (HJ2.1- 2016) (2) Technical Guidelines on Environmental Impact Assessment - Surface Water Environment (HJ / T2.3-93) (3) Technical Guidelines on Environmental Impact Assessment - Atmospheric Environment (HJ2.2-2008) (4) Technical Guidelines on Environmental Impact Assessment - Sound Environment (HJ2.4-2009) (5) Technical Guidelines on Environmental Impact Assessment - Ecological Impact (HJ19-2011) (6) Technical Specifications on Soil and Water Conservation in Development and Construction Project (GB50433-2008) 1.2.3 Environmental quality and pollutant discharge standards

Based on the features and nature of the Project, a comparative analysis will be carried out in the EIA process of the Project on the PRC national standards on environmental quality and pollutant discharge and the pollutant control standards and requirements included in the General Guidelines on Environment, Health and Safety issued by the World Bank Group and the more stringent ones will be used as the basis for execution of the monitoring and assessment activities. (1) Ambient Air Quality Standards (GB3095-2012); (2) Environmental Quality Standards for Surface Water (GB3838-2002); (3) Environmental Quality Standards for Noise (GB3096-2008); (4) Environmental Quality Standards for Soil (GB15618-1995); (5) Integrated Emission Standards for Air Pollutants (GB16297-1996); (6) Emission Standards for Odor Pollutants (GB14554-93); (7) Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002); (8) Emission Standard for Environmental Noise on the Boundary of Construction Sites (GB12523-2011); (9) Emission Standard for Industrial Enterprises Noise at Boundary (GB12348-2008); (10) Standard for Pollution Control on the Storage and Disposal Sites for General

Industrial Solid Wastes (GB18599-2001); (11) World Bank Group’s General Guidelines on Environment, Health and Safety; (12) World Bank Group’s Guidelines on Water and Sanitation, Health and Safety. 1.3 Environmental functional zoning and evaluation criteria In accordance with the characteristics and nature of the Project, comparison and analysis will be conducted in the EIA process of the Project over the national environmental quality and pollutant discharge standards applicable to the Project and the pollutant control standards and requirements included in the General Guidelines of Environment, Health and Safety issued by the World Bank Group and whichever is more stringent will be used as the basis of monitoring and evaluation under the Project.

1.3.1 Environmental functional zoning and environmental standards in force (1) Atmospheric functional zoning In accordance with the stipulations in the World Bank’s General Guidelines on Environment, Health and Safety, standards specified in the national legislation shall be adopted as the ambient air quality standard. If there is no such standard, the latest WHO Air Quality Guidelines or other internationally recognized reference standards shall apply. China has promulgated its corresponding air environment quality standard. Therefore, Class II standard specified in the Ambient Air Quality Standards (GB3095- 1996)shall be applied and the standard limits are shown in Table 1-1.

Table 1-1 Standard Values of the Ambient Air Quality Standard

Unit: mg/m3

Assessment factor Time of valuation Class II limits Standard in force Total Suspended Annual Average 0.20 Solids (TSP) Daily Average 0.30 Inhalable Particulate Annual Average 0.10

Matter(PM10) Daily Average 0.15 Ambient Air Quality Annual Average 0.06 Sulfur Dioxide Standard Daily Average 0.15 (SO2) (GB3095-2012) Hourly Average 0.50 Annual Average 0.08 Nitrogen Dioxide Daily Average 0.12 (NO2) Hourly Average 0.24 Hydrogen sulfide Daily Average / Sanitary Design (H2S) Hourly Average 0.01 Standards for Industrial Daily Average / Ammonia (NH3) Enterprises (TJ36-79) Hourly Average 0.2

(2) Surface water functional zoning

No surface water environment quality standard is proposed in the World Bank General Environment, Health and Safety Guidelines; in the Environmental Quality Standards for Surface Water (GB3838-2002) of China, different quality standards are specified for different water bodies and the various water quality indicators are quantitafied for the sake of monitoring and evaluation.

The main surface water bodies in the assessment area of the Project are Lantang River, Xiaotaiping River and Taiping River, all of which belonging to Class IV water body functional zone. Xiaotaiping River is the sewage reception water of the Project and will follow Class IV standards of Environmental Quality Standards for Surface Waters (GB 3838-2002). The limits of the standards are shown in Table 1-2.

Table 1-2: Environmental Quality Standards for Surface Water (GB3838-2002) Unit: mg/L

S.N Item Class Ⅳ standard values 1 pH (dimensionless) 6~9 2 Dissolved oxygen (DO) ≥3 3 Chmiecal Oxygen Demand (COD) ≤30

4 5-day Biochemical Oxygen Demand(BOD5) ≤6 5 Suspended Substances (SS)* ≤60

6 Ammonia Nitrogen (NH3-N) ≤1.5 7 Total Phosphorus (TP) ≤0.3 8 Anionic Surfactant ≤0.3 9 Total Residual Chlorine / 10 Petroleum ≤0.5 11 Number of fecal coliforms (No. /L) ≤20000

Note: “*” refers to Class IV standard limits in SL63-94 Quality Standard for Surface Water Resources. (3) Acoustic functional zoning It is stipulated in the World Bank General Environment, Health and Safety Guidelines that the noise level is 55dB(A) in day and 45dB(A) at night for residential, office and culture and education areas, 70dB(A) in day and 70dB(A) at night for industrial and commercial facilities; in contrast, the standard values for industrial and commercial mixed areas specified in the Chinese standard are 60dB(A) in day and 50dB(A) at night, stricter than the EHS Standards. Therefore, the Chinese national standard shall be followed. According to the Environmental Quality Standards for Noise (GB3096-2008), the project area follows Class 2 standard while the areas along one sde of County Highway Z007 follows Class 4a standard, with the standard values shown in Table 1-3.

Table 1-3: Environmental Quality Standards for Noise (GB3096-2008) Unit: dB(A)

Time period Daytime Nighttime Class of acoustic functional zone 2 60 50 4a 70 55

1.3.2 Pollutant discharge standards

(1) Air pollutant discharge standard

No standard limits are specified in the General Environment, Health and Safety Guidelines for unorganized emission and odor emission. Therefore, the Chinese national standard shall be followed.

Dust, and exhaust gas from machinery and automobiles on construction sites should meet the emission standards for pollutants discharged in an unorganized way included in the Integrated Emission Standards for Air Pollutants (GB16297-1996).

Odor emitted by the project in the operation period shall follow Class II standard specified in Table 4 of the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002) and the key limits of emission standard are shown in Table 1-4 as follows.

Table 1-4: Maximum Allowable Concentration of Exhaust Gas Emission on the Boundary of Plants

Class II standard S.N Controlled item mg/m3 1 Ammonia 1.5 2 Hydrogen sulphide 0.06 3 Odor concentration (dimensionless) 20 Methane (Highest volume concentration 4 1 in the plant area, %)

(2) Wastewater discharge standard It is stipulated in the Water and Sanitation Environment, Health and Safety Guidelines that sewage shall meet relevant national requirements or internationally accepted standards and the relevant wastewater discharge quality objectives shall be realized based on the end use with the most sensitive assimilation capability and receiving water. References are made to the “Surface Water Discharge” section of the General EHS Guidelines. It is required in the General EHS Guidelines that the national or local wastewater discharge standards shall be followed and, in the absence of such standards, the reference guidancevalues applicable to discharge of domestic sewage included in Table 1.3.1 shall be followed; the specific indicators are as follows: pH: 6~9; COD: 125 mg/L; BOD5: 30 mg/L; TP: 2 mg/L. It is indicated in the comparative

6 analysis that China has a complete system of water pollutant discharge standards, which are stricter than the World Bank EHS standards. Therefore, the Chinese discharge standards shall be implemented. During the construction stage of the project, the wastewater treated in the septic tanks shall be discharged into the treatment system of the WWTP (East District) and the treated effluent shall meet Class 1A effluent discharge standard included in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002). During the operation stage, the treated effluent shall meet Class 1A effluent discharge standard included in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002). The standard limits are shown in Table 1-5.

Table 1-5: Wastewater Discharge Standard

Unit: mg/L (except pH)

Pollutant pH COD BOD5 TN TP SS NH3-N GB18918-2002 6~9 50 10 15 0.5 10 5(8) Class 1A GB18918-2002 6~9 60 20 20 1 20 8(15) Class 1B

Note: Values outside the brackets are control indicator at a water temperature of greater than 12℃ while those inside are control indicators at a water temperature of ≤ 12℃.

(3) Noise emission standard

No noise standards are specified in the General Environment, Health and Safety Guidelines for construction sites and boundaries of industrial enterprises. Therefore, the Chinese national noise standards shall be followed.

The noise from construction activities in the construction stage shall comply with Emission Standard for Environmental Noise on the Boundary of Construction Sites (GB12523-2011), with the specific values shown in Table 106.

Table 1-6: Emission Standard for Environmental Noise on the Boundary of Construction Sites (GB12523-2011) Unit: dB(A)

Environmental noise limits on construction sites

Daytime Nighttime

70 55

The noise on the boundary of industrial enterprises during the operation stage shall comply with Class 2 standards of Emission Standard for Industrial Enterprises Noise at Boundary (GB12348-2008). See Table 1-7 for details.

Table 1-7: Emission Standard for Industrial Enterprises Noise at Boundary (GB12348-2008)

Unit: dB(A)

Time

Daytime Nighttime

Category of acoustic environment functional zones outside boundaries of industrial enterprises Category 2 60 50 Category 4 70 55

(4) Other standards Disposal of general industrial wastes generated in the operation stage of the Project shall follow the Standard for Pollution Control on the Storage and Disposal Sites for General Industrial Solid Wastes (GB18599-2001) and its amendments (Circular No. [2013]36). 1.3.3 WB Safeguard Policies and Guidelines

As the Project intends to utilize World Bank loan, analysis is conducted over the correlation of the Project and the WB’s safeguard policies. The analysis results are shown in Table 1-8 below.

Table 1-8 Correlation Analysis of the Project and the World Bank Safeguard Policies

World Bank S.N Safeguard Triggered? Explanation Policies

The Project is designed to address the pressure of wastewater treatment upon Lingui District, Guilin City and improve the water environment in Guilin City. The proposed components of the Project include upgrading the existing wastewater treatment OP/BP4.01 standard to Class 1A, removing odor and achieving deep 1 Environmental √ Yes treatment of sludge in the plant site. Based on the assessment characteristics and scale of the Project, the following environmental impacts will be involved: (1) Dust and noise in the construction stage of the Project will generate impacts on local residents.

World Bank S.N Safeguard Triggered? Explanation Policies (2) Transportation of construction materials of the Project will generate certain impacts on sensitive sites along the route.

The Project will be constructed in the site of the existing WWTP

and the treatment process will reduce discharge of pollutants in OP/BP4.04 the wastewater. No additional land occupation and damages of 2 Natural × No existing ecosystem are involved and no important / sensitive Habitats natural habitats are discovered in the land parcel. Therefore, this policy will not be triggered.

The project will not finance activities that involve significant

OP/BP 4.36 conversion or degradation of critical forest or related critical 3 × No Forests habitat defined under the policy. This policy will not be triggered.

OP/BP 4.09 The proposed project will neither procure pesticides nor result 4 Pest × No in increased use of pesticides. This policy will not be triggered. Management

OP/BP 4.11 The implementation of the Project will cause no additional land

Physical acquisition and there are no cultural relics and remains in the 5 × No Cultural land parcel of the existing WWTP. Therefore, this policy will not Resources be triggered.

As aWWTP upgrading and improvement project, the Project is OP/BP 4.10 located in the built urban area with well-established urban 6 Indigenous × No infrastructures. According to the investigation, there are no Peoples ethnic minorities in the project areas. Therefore, this policy will not be triggered.

The construction area of the Project will be controlled within the OP/BP 4.12 boundary of the plant area and no construction camps are 7 Involuntary × No needed. The construction contractors will rely on the Resettlement communicy facilities and do not need additional land acquisition and resettlement. Therefore, this policy will not be triggered.

OP/BP 4.37 There are no affected dams in the implementation area and 8 Safety of × No pollutant accepting waters of the Project. Therefore, this policy Dams will not be triggered.

OP/BP 7.50

Projects on 9 × No This Project involves no international waterways. International Waterways

OP/BP 7.60

Projects on All the project areas are in Guangxi and no disputed areas are 10 × No Disputed involved. Areas

1.4 Environmentally sensitive sites and protection targets Based on the actual scope o fimpact of the project, the scope of noise impact in the construction stage is within a distance of 150m from the sound source, the scope of dust impact in the construction stage is generally within a distance of 200m from the site and the scope of odor impact in the operation stage is generally within a distance of 100m downwind of the odor-generating section. It is on the aforesaid basis that the environmentally sensitive targets affected by the Project are identified. Results of survey indicate that there are no protected areas, ecologically sensitive areas, natural habitats and physical and cultural resources within the aforesaid scope of assessment of the Project. The main environmentally sensitive sites around the project site are shown in Table 1-9. Table 1-9: Environmentally sensitive sites around the project site

Orientation Number Impact Distance Description related to of Category of protection targets factor (m) the Project persons

Dormitory building of Environmental quality standards Sound Guilin Fuxin Northwest 15 20 for noise (GB3096-2008) Class Food Co., 2 Ltd.

Dormitory

building of Ambient air quality standard Air Guilin Fuxin Northwest 15 20 (GB3095-2012) Class II Food Co., Ltd.

Environmental Quality Standards Xiaotaiping Water Northeast 1900 / for Surface Water River (GB3838-2002) Class IV

2. Engineering Analysis

2.1 Overview of existing facilities 2.1.1 Introduction Lingui District (West) Wastewater Treatment Plant is formerly known as Lingui West District Wastewater Treatment Plant commenced in August 2005 and put into operation in December 2008. Adopting the CAST process and achieving a treatment capacity of 30,000 m3/d, the WWTP follows Class 1B effluent quality standard stipulated in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918- 2002) and discharges the effluent into the Xiaotaiping River. However, the existing equipment of the WWTP are aged and the treatment effect cannot meet the Class 1A standard. 2.1.2 Key structures The main structures of the Project include the influent pump house, the fine grid and sedimentation tank, CAST biological tank, blower room, sludge dewatering equipment room, UV disinfection channel and so on. 2.1.3 Operation status

According to the monthly production reports of Guilin Lingui District Wastewater Treatment Plant for the months of July to October 2018, Lingui District (West) Wastewater Treatment Plant is in normal operation. The monthly operating load of the WWTP is shown in Table 2-1.

Table 2-1 Monthly Production Reports for the months of July to October for Lingui District (West) WWTP

Month July August September Octoer

Wastewater treatment volume 97.67 83.73 83.05 66.12 (*10,000 tons)

The upgrading and improvement works of the Project are not yet commenced and the existing WWTP is in normal operation, but has substantially reached its maximum treatment load (i.e. the design treatment capacity of 900,000 tons/month). It is learned that the maximum load of wastewater treatment will be reached very soon along with the increasing wastewater capacity resulting from the increase of population in Lingui District.

2.1.4 Fulfillment of environmental protection approval formalities

Lingui District (West) Wastewater Treatment Plant, formerly known as Lingui West District Wastewater Treatment Plant commenced in August 2005, gained the EIA approval on July 31, 2002 in the “Approval of the Environmental Impact Report of Guangxi Guilin Lingui West District Wastewater Treatment Project” (Guilin Environmental Administration Doc. No. [2002]194) as included in Annex 1 and the acceptance approval on July 27, 2010 in the “Approval of the Request for Final Acceptance of Environmental Protection of Guangxi Guilin Lingui West District Wastewater Treatment Project” (Guilin Environmental Acceptance Doc. No. [2010]64) as included in Annex 2. 2.2 Overview of proposed project 2.2.1 Basic information Basic information and components of the Project are shown in Table 2-4 as follows. Table 2-4 Overview of Lingui District WWTP Upgrading and Improvement Project

Project description Guilin Lingui District (West) WWTP Upgrading and Improvement Project

Executive agency Guilin Municpal Drainage Co., Ltd.

Project location In the site of Guilin Lingui District WWTP

Land area Total land area: 2667m2 (equivalent to 4 mu)

Service area Lingui District, Guilin Municipality

The original treatment capacity of 30,000 m3/d of the WWTP will remain Treatment capacity unchanged.

The original treatment capacity of 30,000 m3/d of the WWTP will remain unchanged and the existing plant area and the pump station equipment of the WWTP will be upgraded and improved to meet Class 1A standard stipulated in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002).

Ion deodorization method will be used for deodorization in the influent Project components pump house, the fine grid and sedimentation tank, the biological tank and the sludge dewatering workshop.

Enclosed deodorization will be carried out for the structures.

The low-temperature vacuum sludge dewatering and drying process will be adopted to achieve deep treatment of sludge, with the dewatered sludge delivered to Guilin Shangyao Sludge Disposal Center for disposal.

2.2.2 Upgrading and Improvement Program

It is proposed to add advanced treatment process after the biological treatment system in the Project for the purpose of further removal of phosphorus and suspended substances and enabling the various indicators to stably satisfy the standard requirements.

The advanced treatment process to be added under the Project is lift pump station + coagulation sedimentation tank + deep-bed fiber filter + UV disinfection channel. From the perspective of the process itself, it will be necessary to build the pump station, the deep-bed fiber filter and the UV disinfection channel and the effluent will be measured using the Pasteur gauge.

(1) Lifting pump station

To be designed at a capacity of 30,000m3/d;

(2) Folded plate flocculation inclined tube sedimentation tank

The folded plate flocculation inclined tube sedimentation tanks will be designed at a capacity of 30,000 m3/d, with 2 units with a unit capacity of 15,000 m3/d.

(3) Deep-bed fibre bundle filter

To be designed against a capacity of 30,000m3/d with a variation coefficient of 1.45; The equipment in the filter tank is composed of a fiber density adjusting device, a fiber filter module, an air and water distribution device, and filter plate supports and fasteners.

(4) Ultraviolet disinfection channel

The design will include one UV disinfection channel with a designed capacity of 30,000 m3/d. In normal operation, the quantity of fecal coliform bacteria contained in the sewage after UV disinfection shall not exceed 1000/L, and the fecal coliform indicator shall meet Class 1A discharge standard specified in the “Discharge Standard of Pollutants for Municipal WWTPs” (GB18918-2002).

(5) Pasteur gauge

Pasteur gauge is an auxiliary device for flow measurement in open channels and will be designed against a capacity of 30,000m3/d in this upgrading and improvement project. One new channel with a dimension of LxB=14.8x1.70m and a throat width of 0.45m will be constructed.

(6) Chemical phosphorus removal

Dosing and adding facilities for chemical agents (basic aluminum chloride) required for chemical removal of phosphorus. The dosing room for the chemical dephosphorization process is placed in the existing building (the original chlorination room) and will comprise of a dosing room and a drug storehouse.

(7) Plant area deodorization

Ion deodorization method will be adopted in the Project and the main deodorization sites in the plant area are the coarse grid and influent pump station, fine grid and sedimentation tank, CAST biological tank and dewatering machine room.

Here indicated in the table below is the configuration of deodorization equipment in each of the odor treatment areas:

Table 2-3 Deodorization Equipment Schedule

S.N Equipment Description Specifications Treatment Area 1 1 set of deodorization equipment Q=6000m3/h Taiping River pump station 2 1 set of deodorization equipment Q=6000m3/h Sand sedimentation tank 2 2 sets of deodorization equipment Q=15000m3/h Biological tank 3 1 set of deodorization equipment Q=2000m3/h Sludge concentration tank Advanced sludge treatment 4 1 set of deodorization equipment Q=10000m3/h workshop to be built

(8) Advanced sludge treatment

In this Project, advanced treatment of sludge will be realized by means of sludge dewatering through physical conditioning. The thickened sludge of Lingui District Wastewater Treatment Plant will be subject to deep dewatering, during which the biological membrane and cell wall are destroyed physically by heating and the cell- bound water is released to easily separate the sludge from water. The dewatered sludge is sent by the feed pump into the dehydration and drying system, with flocculant added on-line, and the filtrate is pumped and discharged through the filter medium to complete the liquid-solid separation. After the sludge is treated through the processes of feed filtration, membrane pressure filtration, and heat drying, the water in the filter cake will be fully removed to reduce the moisture content to less than 40%. The dewatered sludge is finally transported to Guilin City Shangyao Sludge Disposal Center for disposal. The Project proposes to achieve advanced dewatering of sludge through heating and, for the sake of energy conservation, it is proposed that gas supplied from Towngas China (Guilin) Co., Ltd. will be used as the heat source for sludge drying.

2.2.3 Key Structures and Equipment in the Project

Structures to be constructed in the upgrading and improvement project are liseted in Table 2-3; key equipment to be introduced are listed in Table 2-4. Table 2-4 List of Key Structures

Key buildings S.N Basic dimension Unit Qty Structural type (structures) Sludge dewatering 1 S=650m2，H=5.3m No. 1 Framework workshop 2 Thickening tank D=9m，H=4m No. 2 Reinforced

Key buildings S.N Basic dimension Unit Qty Structural type (structures) concrete Reinforced 3 Equalization tank L×B×H=5.5m×4.5m×3.8m No. 1 concrete Folded plate flocculation Reinforced 4 inclined tube L×B×H=37.2m×23.8m×3.5m No. 1 concrete sedimentation tank 5 Lifting pump station S=55.4m2，H=5.7m No. 1 Framework Reinforced 6 Dissolution tank L×B×H=1m×1m×0.9m No. 2 concrete Reinforced 7 Solution tank L×B×H=1m×1m×0.7m No. 2 concrete 8 Power cabinet S=52m2，H=4m No. 1 Brick concrete Deep-bed fiber bundle Reinforced 9 L×B×H=32.5m×17.2m×4m No. 1 filter tank concrete Reinforced 10 Sludge discharge tank L×B×H=16.5m×8.5m×3.5m No. 1 concrete Reinforced 11 Drainage tank L×B×H=21.7m×11.1m×4.6m No. 1 concrete Reinforced 12 Pasteur gauge L×B×H=14.8m×1.7m×1.5m No. 1 concrete Reinforced 13 UV disinfection tank L×B×H=16.5m×3.9m×1.6m No. 1 concrete

Table 2-5 List of Key Equipment in the Project

S.N Equipment description and model Unit Qty 1 Upgrading of equipment in original workshops and pump stations 1.1 Rotary blower No. 2 1.2 Rotary grid decontamination machine No. 2 1.3 Shaftless screw conveying press machine No. 1 1.4 Stirring stripping system No. 2 1.5 Sand water separator No. 1 1.6 Water pump No. 2 1.7 Electric butterfly valve Set 4 1.8 Electric gate valve Set 4 1.9 Hyperbolic mixer Set 4 1.10 Hyperbolic mixer No. 12

S.N Equipment description and model Unit Qty 1.11 Return pump No. 4 1.12 Manual butterfly valve Set 8 1.13 Valve device Set 1 1.14 Decanter Set 4 1.15 Aeration tube No 1800 1.16 Overrun valve Set 1 1.17 Manual residual sludge butterfly valve DN200 Set 4 1.18 Electric residual sludge valve DN200 Set 4 1.19 Effluent butterfly valve DN700 Set 4 1.20 Roots blower Set 3 1.21 Galaxy Butterfly Valve 250 Set 3 1.22 Wafer type butterfly valve DN200 No. 3 1.23 Micro-resistance slow-closing check valve DN250 No. 3 1.24 Electric valve electric device No. 3 1.25 Butterfly valve DN350 No. 2 1.26 Submersible pump No. 5 1.27 Rotary grid No. 2 1.28 Frequency converter cabinet No. 1 1.29 Sludge truck No. 2 1.30 Low voltage switch box No. 6 1.31 Distribution cabinet No. 2 1.32 Automated monitoring equipment / / 1.32.1 Master upgrade Set 2 1.32.2 PLC Set 2 1.32.3 UPS uninterruptible power supply Set 2 1.32.4 Network switch Set 2 1.32.5 Multimedia computer No. 1 1.32.6 Webcam No. 10 1.32.7 Optical transceiver Set 10 1.32.8 Network switch Set 2 1.32.9 Instrumentation / / 1.32.10 Level gauge No. 2 1.32.11 Flow meter No. 2 1.32.12 COD tester No. 2 1.32.13 Total phosphorus tester No. 2 1.32.14 Ammonia nitrogen tester No. 2 1.32.15 PH tester No. 2

S.N Equipment description and model Unit Qty 1.32.16 Data collector No. 2 1.32.17 SS tester No. 2 1.32.18 Sludge concentration tester No. 4 1.32.19 DO tester No. 4 2 Equipment to be added for WWTP upgrading and improvement 2.1 Lifting pump station / / 2.1.1 Submersible sewage pump Set 4 Micro-resistance slow-closing silencing butterfly check 2.1.2 No. 4 valve 2.1.3 LX electric single beam suspension crane Set 1 2.1.4 Manual expansion butterfly valve No. 8 Folded plate flocculation inclined tube 2.2 / / sedimentation tank 2.2.1 Manual butterfly valve DN700 No. 2 2.2.2 Hydraulic angle valve No. 56 2.2.3 Manual butterfly valve DN200 No. 56 2.3 Gas-water backwash filter tank / / 2.3.1 Fiber filter equipment Set 6 2.3.2 Roots blower No. 5 2.3.3 Horizontal single stage centrifugal pump No. 3 2.3.4 LX electric single beam suspension crane No. 1 2.3.5 Electric square gate No. 6 2.3.6 Electric wafer type adjustment butterfly valve No. 6 2.3.7 Electric wafer type butterfly valve DN500 No. 6 2.3.8 Electric wafer type butterfly valve DN400 No. 10 2.3.9 Electric wafer type butterfly valve DN300 No. 7 2.3.10 Manual wafer type butterfly valve DN500 No. 2 2.3.11 Manual wafer type butterfly valve DN400 No. 2 2.3.12 Manual wafer type butterfly valve DN300 No. 6 2.3.13 Manual wafer type butterfly valve DN50 No. 4 2.3.14 Micro-resistance slow-closing check valve No. 2 2.3.15 Double flange loose limit compensation joint DN500 No. 4 2.3.16 Double flange loose limit compensation joint DN400 No. 12 2.3.17 Double flange loose limit compensation joint DN300 No. 4 2.3.18 Double flange flexible expansion joint DN500 No. 2 2.3.19 Double flange flexible expansion joint DN400 No. 2 2.4 Sludge discharge tank / /

S.N Equipment description and model Unit Qty 2.4.1 Submersible pump No. 2 2.4.2 Underwater mixer No. 4 2.4.3 Micro-resistance slow-closing check valve No. 2 2.4.4 Manual gate valve No. 2 2.4.5 Force compensation joint No. 2 2.5 Drainage tank / / 2.5.1 Submersible pump No. 2 2.5.2 Underwater mixer No. 4 2.5.3 Micro-resistance slow-closing check valve DN150 No. 2 2.5.4 Manual gate valve DN150 No. 2 2.5.5 Force compensation joint DN150 No. 2 2.6 UV disinfection channel / / 2.6.1 Flap gate Set 1 2.6.2 UV disinfection module No. 2 2.6.3 Reuse pump Set 2 2.6.4 Gate valve No. 2 2.6.5 Check valve No. 2 2.8 Chemical phosphorus removal / / 2.8.1 Pitching mixer P=0.75KW No. 2 2.8.2 Pitching mixer P=0.37KW No. 2 2.8.3 Diaphragm metering pump No. 3 3 Plant area and pump station deodorization 3.1 Integrated deodorizing equipment Q=15000m3/h Set 2 3.2 Integrated deodorizing equipment Q=6000m3/h Set 2 3.3 Integrated deodorizing equipment Q=2000m3/h Set 1 3.4 Integrated deodorizing equipment Q=10000m3/h Set 1 3.5 Electric control box Set 6 3.6 Air volume control valve, pipe and plate Batch 1 3.7 Cable membrane ㎡ 4065.6 4 Advanced sludge treatment 4.1 Sludge thickening tank / / 4.1.1 Sludge concentration mixer (including sludge bridge) No. 2 4.2 Sludge equalization tank / / 4.2.1 Mixer No. 1 4.3 Drying circulation tank / / 4.3.1 Cold water tower No. 2 4.3.2 Cooling circulation pump No. 2

S.N Equipment description and model Unit Qty 4.3.3 Manual gate valve No. 4 4.3.4 Manual check valve No. 2 4.3.5 Electric gate valve No. 2 4.3.6 Flexible joint No. 2 4.3.7 Manual gate valve No. 1 4.4 Advanced sludge treatment workshop / / 4.4.1 PAM dosing device No. 2 4.4.2 Drug storage tank No. 1 4.4.3 PAC dosing device No. 1 4.4.4 PAC dosing pump No. 2 4.4.5 Sludge feed pump No. 2 4.4.6 PAM dosing pump No. 2 4.4.7 Online mixer Set 2 4.4.8 Pressure filter pump No. 2 4.4.9 Filter water tank No. 1 4.4.10 Atmospheric pressure gas-fired hot water boiler No. 2 4.4.11 Balance water tank No. 2 4.4.12 Hot water pump No. 2 4.4.13 Vacuum pump No. 2 4.4.14 Condenser No. 2 4.4.15 Gas-liquid separator No. 2 4.4.16 Liquid storage tank No. 2 4.4.17 Cold water tower No. 2 4.4.18 Circulating pump No. 2 4.4.19 Conveyor No. 2

2.2.4 Fulfillment of environmental protection approval formalities

Guilin Lingui District (West) Wastewater Treatment Plant gained the EIA approval on March 27, 2017 in the “Approval of the Environmental Impact Report of the Lingui District (West) Wastewater Treatment Plant Upgrading and Improvement Project” as included in Annex 3.

3. Due Diligence of Linked Projects

As it is proposed that gas from Guilin Ganghua Gas Co., Ltd. will be used for drying of sludge to be generated under the Project and the gas will be transported to the project site through gas pipeline, it is necessary to carry out a study of Guilin Ganghua Gas Co., Ltd. The sludge to be produced by this project will be transported to the Shangyao Wastewater Treatment Plant for treatment, making it also necessary to carry out a study of Shangyao Wastewater Treatment Plant. 3.1 Towngas China (Guilin) Co., Ltd. 3.1.1 Company overview

Established in July 2010, Towngas China (Guilin) Co., Ltd. is a wholly foreign-owned enterprise established by Towngas China Investment Co., Ltd. through equity merger and acquisition. With a registered capital of CNY 30 million, Towngas China (Guilin) Co., Ltd. is mainly engaged in operation of urban gas pipeline ( in Lingui County of Guilin City), construction of urban gas pipelines, and sales of gas appliances and kitchen appliances, etc.. At the approval of Lingui District Government, Towngas China (Guilin) Co., Ltd. obtained the pipeline gas franchise right in Lingui District, becoming the only enterprise with exclusive right to invest in, construct and operate urban gas pipelines in Lingui District. As of October 2015, the Company has completed the construction of municipal pipelines with a total length of about 33 kilometers, which have substantially formed the backbone of the gas supply in the region; community pipelines with a total length of 115 kilometers had been constructed providing pipeline gas for 30000 households in 38 communities covering the entire Lingui District. The annual gas supply in 2015 reached 3.45 million square meters. In 2012, the company completed the construction of one LNG gas source field with a gas storage capacity of 160,000 square meters.

3.1.2 Environmental impacts from project implementation

The gas pipeline from Towngas China (Guilin) Co., Ltd. has been laid to the boundary of Lingui Wastewater Treatment Plant. Under the Project, it is only necessary to build a gas pipeline to connect the gas pipeline at the gate of the WWTP to the sludge drying workshop. During the construction of the gas pipeline, excavation and backfill will be needed and construction wastewater, spoil and noise will be generated. However, since the gas pipeline to be laid is short and the environmental during the construction stage is short, no environmental impacts will be generated after the project is completed and put into operation.

3.1.3 Construction progress

At present, Towngas China (Guilin) Co., Ltd. is already established and gas pipelines have been installed in the urban area of Lingui District and supply gas to enterprises and residents of Lingui District. Main gas pipelines of Towngas China (Guilin) Co., Ltd.

20 have been laid outside the plant area of the project and it is necessary to install a connecting gas pipeline of only about 200m along the access road into the plant area. 3.2 Guilin Shangyao WWTP sludge disposal project 3.2.1 Company overview

Guilin Shangyao WWTP Sludge Disposal Project implemented by Guilin Municipal Drainage Co., Ltd. was constructed in 2008 southwest of Shangyao WWTP located in Yaotou Village, Tuomu Town of Yanshan District in Guilin City. It involves a land occupation of and achieves a daily sludge disposal capacity of 100t/d (including 60t/d with a moisture content of 60% and 40t/d with a moisture content of 80%).

3.2.2 Construction progress

Semi-open structures were adopted in the original treatment process of Guilin Shangyao WWTP, resulting in difficulty in collecting odor generated in the process of sludge storage, mixing and fermentation and significant impacts from unorganized emission of odor on the local environment. Limited by the treatment technology and equipment back then, the level of autamation in the sludge fermentation process was low, resulting in insufficient aeration, high concentration and heavy emission ofodor, and significant impact on the surrounding environment. In such a context, Guilin Drainage Co., Ltd. carried out a technological reform project to the sludge treatment process of Guilin Shangyao WWTP and constructed the sludge pretreatment system, fully-enclosed aerobic and high-temperature sludge fermentation system, posttreatment system and exhaust gas collection and treatment system. Thanks to such technical reform, not only the advanced treatment of sludge becomes more effective, but the impact of odor on the surrounding environment was reduced. This project is already completed and put into operation.

3.2.3 Treatment process

Sludge collected by Shangyao Wastewater Treatment Plant is added with auxiliary materials in the sludge hopper on the spiral conveyor and the sludge and auxiliary materials are conveyed as required via a metered spiral conveyor below the sludge and auxiliary material hopper to the double-spiral mixer. After the sludge is mixed, it reaches a moisture content of 55% suitable for composting and the mixture is directly sent to the fermentation system through the conveyor for high-temperature aerobic fermentation. The material is conveyed via a spiral conveyor in the fermenter, where it is subject to a continuous high-temperature aerobic fermentation in the fermentation system for 5-7 days, and then discharged via the belt conveyor to the screening machine for screening, with the undecomposed oversize material is returned to the fermentation system for re-fermentation while the undersize material is stacked and matured by the dump truck (or forklift) in the maturnig area or transported out of site for utilization as demanded.

Figure 3-1 Sludge Disposal Flowhart of Shangyao WWTP

3.2.4 Fulfillment of environmental protection approval formalities and environmental performance

The Environmental Impact Report (Draft for Approval) of Shangyao Sludge Disposal Improvement Project under Guilin Shangyao Wastewater Treatment Plant Sludge Disposal Project was prepared by Guangxi AES Environmental Protection Co., Ltd. and approved by Guilin Environmental Protection Bureau in June 2016. In May 2018, the Project carried out the independent environmental protection acceptance of water and waste gas and passed the governmental acceptance of noise and solid waste organized by Guilin Environmental Protection Bureau.

The monitoring results during the acceptance stage indicate that odor generated in the sludge pretreatment process and odor generated from sludge fermentation as the main atmospheric pollutant of the Project respectively reach the emission limits of odor concentration specified in Table 1 and Table 2 in the "Emission Standard for Odor Pollutants" (GB14554-93) at the boundary of the plant and at the discharge

22 outlet respectively. The wastewater mainly comprises of the initial rainwater generated in the site. The initial rainwater is collected via the rainwater pipe in site and delivered along the rainwater ditch equipped with a switching gate to the collection tank of Shangyao Wastewater Treatment Plant for subsequent treatment. The treated wastewater is discharged after treated to Class 1B standard specified in Table 1 in the "Discharge Standard of Pollutants for Municipal WWTPs" (GB18918-2008). The noise level at the factory boundary in day and night meets Class 2 standard in Table 1 of the Emission Standard for Industrial Enterprises Noise at Boundary (GB12348-2008). Therefore, the environmental performance of the Sludge Disposal Project of Guilin Shangyao Wastewater Treatment Plant meets the requirements of relevant emission standards. 3.3 Guilin Lingui District (East) WWTP 3.3.1 Company Overview

The eastern part and western part of Guilin Lingui Wastewater Treatment Plant are located in the same plant area and designed for joint treatment of sewage in Lingui District. The eastern part mainly collects a part of the urban domestic sewage and wastewater from Miaoling community. About 95% of the sewage collected by in the eastern part is domestic sewage and the remaining 5% industrial wastewater (which must reach Class 1 standard specified in the Integrated Wastewater Discharge Standard (GB8978-1996) before being connected to the municipal pipelines and conveyed to the WWTP for treatment).

Guilin Linggui District (East) WWTP is constructed by Guilin Municipal Drainage Co., Ltd. based on a design capacity of 30,000m3/d, a total land occupation of 60mu and a supporting pipeline network of 57.28km for the near future and a design capacity of 150,000m3/d for the far future (2025). Designed to adopt the A2O wastewater treatment technology, the WWTP is supposed to meet the Class 1A effluent quality standard specified in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918- 2002) and mainly collects domestic sewage from Lingui District of Guilin City and a small part of treated industrial wastewater.

3.3.2 Construction progress

The 30,000 m3/d part of Guilin Linggui District (East) WWTP was completed and put into trial operation in 2013 and was further upgraded and improved in terms of discharge standard in June 2014. The existing structures mainly include coarse grid and lift pump station, fine grid, sedimentation tank, oxidation ditch, sludge pump station, secondary sedimentation tank, UV disinfection tank, etc., Enclosed odor removal is adopted for anaerobic, anoxic and aerobic treatment processes. The project has been completed and put into normal operation with a daily sewage treatment capacity of 30,000 m3 basically in its full load.

3.3.3 Fulfillment of environmental protection approval formalities and environmental performance

The 30,000 m3/d part of Guilin Linggui District (East) WWTP was approved on July 4, 2014 by Guilin Municipal Environmental Protection Bureau in its official document the Approval on the Environmental Impact Report of Lingui New District Wastewater Treatment Plant Upgrading and Improvement Project (Municipal Environmental Management Doc. No. [2014]16) as included in Annex 10.

It is located in the same plant area with the West WWTP and the sludge is dewatered and sent to Shangyao Sludge Treatment Project for composting. Monitoring results (detailed in §4.1) indicate that the odor concentration on the boundary of the WWTP satisfies Class II standard for the maximum allowable concentration for exhaust gas emission included in Table 4 in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002) and the heavy metal content in the sludge does not exceed the standard limits of the screening value for Class II land parcels specified in the Soil Environment Quality Standard for Soil Pollution Risk Control for Construction Land ( Trial) (GB36600-2018).

At present, the moisture content of dewatered sludge of the WWTP is about 80%. The dewatered sludge is transported using special sludge trucks to the Shangyao Sludge Treatment Project for composting. The sludge trucks are fully enclosed and equipped with GPS real-time positioning and leachate collection system to minimize environmental impacts during transportation.

4. Environmental Baseline Survey 4.1 Environmental Performance Survey of the Existing Facilities 4.1.1 Operation Status of the Existing Facilities Table 2-1 shows the monthly statistics of operational load and effluent concentration of Lingui District (West) WWTP in normal operation as indicated in the monthly production reports for the months of July to October 2018 of Guilin Lingui District WWTP. Table 2-1 Monthly production reports for the months of July to October 2018 of Guilin Lingui District (West) WWTP

Wastewater COD NH3-N treatment COD BOD5 SS NH3-N TP Testing data Reduction reduction volume (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

July (t/month) (t/month) (10000 tons)

Influent 66 39 59 10.06 1.22 Effluent 14.1 5 6 0.636 0.577 97.67 50.69 9.20 Rate of 78.64% 87.18% 89.83% 93.68% 52.70% removal Wastewater COD NH3-N treatment COD BOD5 SS NH3-N TP Testing data Reduction reduction August volume (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (10000 tons) (t/month) (t/month) Influent 113 74 134 17.55 1.77 Effluent 21 7 8 1.25 0.587 83.73 77.03 13.65 Rate of 81.42% 90.54% 94.03% 92.88% 66.84% removal Wastewater COD NH3-N BOD5 September treatment COD SS NH3-N TP Testing data Reduction reduction volume (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (10000 tons) (t/month) (t/month) Influent 75 53 90 13.85 1.54 Effluent 14 6 8 1.093 0.595 83.05 50.66 10.59 Rate of 81.33% 88.68% 91.11% 92.11% 61.36% removal Wastewater COD NH3-N treatment COD BOD5 SS NH3-N TP Testing data Reduction reduction October volume (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (10000 tons) (t/month) (t/month) Influent 97 55 45 17.11 1.7 Effluent 25 7 8 1.594 0.698 66.12 47.61 10.26 Rate of 74.23% 87.27% 82.22% 90.68% 58.94% removal The upgrading and improvement project is not yet commenced and the existing WWTP is in normal operation, but basically at its maximum treatment load. The treated wastewater reaches Class 1B standard specified in the “Discharge Standard of Pollutants for Municipal WWTPs” (GB18918-2002), but the effluent concentration of total phosphorus cannot meet the limits for Class 1A standard. It is learned that, with the increase of population and sewage in Lingui District, the treatment effect of the various treatment equipment in the existing treatment processes will be difficult to meet the requirements of Class 1A standard in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002). Therefore, it is urgently needed to carry out the upgrading and improvement project.

4.1.2 Existing Problems of the Existing Facilities (1) The original design was conducted based on relatively low standards; The Class 1B standard as adopted by Lingui District (West) WWTP according to the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002) is relatively low. In the face of the reality that increasingly strict discharge standards are adopted for WWTPs in China, it has been raised as a requirement by Guilin Environmental Protection Bureau that the tail water of WWTPs in Guilin City must meet Class 1A, let alone the even more stringent requirements for TN and TP. In such a context, upgrading and improvement of the Lingui District (West) WWTP becomes necessary in order to reduce the discharge of pollutants and protect the water quality of the Xiaotaiping River. (2) Environmental impacts of odor Lingui Wastewater Treatment Plant is located on the outskirt of Guilin City. Thanks to the rapid development of Guilin City and the relocation of Guilin Municipal Government to Lingui District, living quarters and schools will be built up in this area. Consequently, the original outskirt area will be urbanized and the surrounding areas will become more and more sensitive to the odor from the wastewater treatment plant. Deodorization facilities can effectively improve the atmospheric environment around wastewater treatment plants. However, no deodorization facilities are provided in the project area and the generated odor is emitted in an unorganized way. Table 2-2 shows the results of ambient air quality monitoring carried out by Guangxi Kehan Environmental Technology Co., Ltd., from January 16 to 18, 2018 at the upwind and downwind boundaries of the project site on a real-time basis. Table 2-2 Hourly Values of Environmental Quality Monitoring

Unit: mg/m3 Upwind of No. 2 plant boundary Downwind of No. 3 plant boundary Odor Odor Date Time H2S NH3 concentration H2S NH3 concentration (dimensionless) (dimensionless) 08:00 0.005 0.024 ＜10 0.005 0.029 ＜10 2018.1.16 14:00 0.004 0.023 ＜10 0.005 0.033 ＜10 20:00 0.005 0.026 ＜10 0.011 0.028 ＜10 02:00 0.002 0.023 ＜10 0.003 0.025 ＜10 08:00 0.004 0.022 ＜10 0.004 0.023 ＜10 2018.1.17 14:00 0.004 0.021 ＜10 0.005 0.028 ＜10 20:00 0.005 0.019 ＜10 0.006 0.025 ＜10 2018.1.18 02:00 0.002 0.023 ＜10 0.003 0.029 ＜10 Standard limit 0.06 1.5 20 0.06 1.5 20 It can be told from the monitoring results included in the above table that the maximum concentration of H2S and NH3 upwind of the plant boundary are 0.005mg/m3 and 0.026mg/m3 respectively and those downwind are respectively 0.011mg/m3 and 0.033mg/m3, implying that odor concentration at all monitoring sites meets Class II standard for maximum allowable concentration of exhaust gas emission on the boundary of municipal WWTPs specified in Table 4 in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002). (3) Environmental impacts of sludge

Sludge produced by both Lingui District (East) WWTP and Lingui District (West) WWTP is dewatered by belt filter press achieving a sludge moisture content of 80%. The sludge produced in the East and West WWTP is subject to simple compression and treatment in the sludge treatment workshops respectively in the eastern and western parts before transported in special trucks to Shangyao Sludge Treatment Project for composting. The sludge trucks are fully enclosed and equipped with GPS real-time positioning and leachate collection system to minimize impact during transportation. Mixed sludge from the East and West WWTP is sent to the testing laboratory on a regular basis for heavy metal content testing, the results of which are shown as follows: Table 2-3 Sludge testing results of Lingui District WWTP Unit: mg/kg

Testing results Standard value Item Screening Control 2017.1 2017.4 2017.7 2017.10 2018.1 2018.4 2018.7 value value Total 2.48 1.48 6.41 4.67 3.00 9.35 8.52 38 82 mercury Total arsenic 13.9 6.37 13.0 15.8 5.96 6.30 13.3 60 140 Total 59 89.0 56.3 125 89 78.0 60.5 / / chromium Total 0.67 0.85 2.18 0.04 0.81 3.0 2.19 65 172 cadmium Total lead 24.9 4.28 46.9 17.0 14.4 36.6 56.2 800 2500 Total 65 119 109 106 109 109 147 18000 36000 copper Total zinc 357 2.94×103 601 1.64×103 206 666 338 / / Total ≤5 46.4 41.7 10.1 28.2 33.7 51.3 900 2000 nickel According to the testing results of the mixed sludge samples of the eastern and western parts of Lingui District WWTP provided by the Drainage Monitoring Station of the Guilin Drainage Engineering Management Office for Year 2017 and 2018, the heavy metal contents in the sludge of the Project do not exceed the standard limits of screening values for Class II land parcels apecified in Table 1 of the Soil Pollution Risk Management and Control Standard for Construction Land (Trial) (GB36600-2018). 4.2 Natural Environment 4.2.1 Geographical Location A world-known tourist destination and a famous city of the Chinese history and culture, Guilin is the political, economic, cultural and technological center in the northeastern part of Guangxi Zhuang Autonomous Region (GAZR). It administers 6 urban districts of Xiufeng, Diecai, Gaoxin (Qixing), Xiangshan, Yanshan, and Lingui and 11 counties of Lingchuan, Xing'an, Quanzhou, Guanyang, Ziyuan, Yongfu, Yangshuo, Lipu, Pingle and Longsheng Ge Autonomous County, Gongcheng Yao Autonomous County. With a total population of 4,884,400 and a total area of 27,800 square kilometers, the city has an urban population of 975,600.

Located at 110 °09ʹ east longitude and 25 °13ʹ north latitude west of the watershed of the Minjiang River system and the Liujiang River system, Lingui District is located in the west part of Guilin City in the northeastern part of Guangxi Zhuang Autonomous Region and enjoys a a total area of 2202 km 2. With a distance of 8 km east of the Lijiang River, 15 km west of the Luoqingjiang River as a part of the Liujiang River System, and approximately 5 km from the urban area of Guilin Municipality, the District has Xiang-Gui Railway and Gui-Liu Expressway running through its county town and enjoys very convenient transportation. 4.2.2 Topographical and Geological Characteristics Leaning on the southern edge of Nanling Mountains, Lingui District is a torch-shaped area that is narrow in the east and west parts and long in the north and south. To its north are towering hills and the south end continuous steep mountains. With the eastern part slightly lower than the western part, Lingui District declines from the northwest to the southeast, forming an east-west watershed. The northwestern part of the District belongs to the Santai Mountains, the stretching branch of Yuechengling Mountain featuring in huge mountains with steep and high peaks, including 24 peaks with an elevation of more than 1000 meters and 64 others with an elevation of 800- 1000 meters, and the highest peak Guangfuding with a height of 1524 meters above sea level. The southwestern part of the District belongs to the Jiqqiaoling Mountains where there are 24 mountain peaks with an elevation ranging from 800 to 1100 meters and Xiangcaoyan is the highest peak that is located 1,176 meters above sea level. The southeastern part of the District is the peak forest plain featuring in forest-like and towering limestone mountains mostly less than 500 meters above sea level. The central part of the District is covered by a hilly plain and karst mountains featuring in round or dome-like hill tops with a slope of 15 to 30 degrees and mountains with no obvious trend and a relative height of 70 to 300 meters. 4.2.3 Climatic Characteristics Lingui District is located in the low latitude area and belongs to the mid-subtropical monsoon climate. Affected by the strong solar radiation and monsoon circulation, Lingui District features in four distinct seasons, abundant heat and rainfall and mild and humid climate with long and wet summers, which, rarely hot, but are occasionally striked by hails, short and dry winters, which, rarely cold, but are occasionally haunted by snowfalls. The springs are equivalent to autumns with the temperature slightly higher in autumn than spring while the winters and summers are found with obvious monsoon alternation. Over the years from 1963 to 2002, the annual average temperature was 19.2 °C, the average maximum temperature was 23.5 °C and the average minimum temperature was 15.9 °C in Lingui New District and the average annual rainfall was 1862.7 mm. Lingui New District is one of the three major rainstorm centers in Guangxi. The strong solar radiation and monsoon circulation provide sufficient water and unstable energy for precipitation. Heavy rains occur in the months of February to November, usually in the months of April-July, with the highest frequency in June, accounting for 28.7% of the whole year. Rainstorms in July are known for their strong intensity, long duration and serious damages. Additionally, due to the local terrain, the frequency, intensity and early and final stage of rainstorms are on a decreasing tendency from north to south. In the years of 1961-1990, there were totally 199 rainfall days with a rainfall intensity of greater than or equal to 50mm, representing an average of 6.6 days per year; and there were 10 to 20 rainfall days on

28 average per year with a rainfall intensity of greater than 30mm. 4.2.4 Hydrological Conditions (1) Surface Water As a part of the regional watershed zone between Lijiang River and Liujiang River, Lingui District has no perennial large rivers, but has relatively developed small rivers and streams. The surface rivers mainly have the following characteristics. With a riverbed width ranging from several meters to more than 20 meters, these surface rivers usually have a cut depth of less than 3m and a longitudinal slope of 0.4 – 0.8‰, resulting in poor discharge and slow circulation of the surface water. Rivers and streams with relatively large catchment in the region include Taiping River, Hengshan Stream, Taohuajiang River and Nanxi River. As the river with the largest catchment area in the region, Taiping River originates from the northwest part, flows through the central part and leaves the region to the south with a flow distance of approximately 20km and a catchment area of 94.1km2 collecting most of the surface water and ground water runoff in the region. According to the river section data at Taipingyu, Taiping River has an annual average water level of 150.93m, an average flow rate of 4.16m3/s, a maximum flood peak flow is 625.2 m3/s, and a lowest water flow rate of 0.08 m3/s. (2) Ground water In Lingui District, groundwater is exposed in three forms, i.e. wells, springs and underground rivers, leading to the existence of many wells and springs all over the region. Underground rivers are distributed in the urban center and its outskirt. The main stratum in the region is carbonate rocks, including pure carbonate rock fissure cave water-bearing rock grousp and impure carbonate rock cave fissure water-bearing rock groups and bedrock fissure water-bearing rock groups. 4.2.5 Fauna and Flora Resources Lingui District has a land area of 2,202 km2 and the total forest area of 1,114,600 mu, representing a forest coverage rate of 33.75%. The natural vegetation in the region mainly comprises of subtropical evergreen broad-leaved forests and evergreen coniferous forests. The evergreen broad-leaved forests are dominated by shell-half tree species, followed by tea and magnolia tree species. In the assessment area, the main vegetations are secondary vegetation and artificial vegetation and there are not many trees, the main tree species being pine, cedar and eucalyptus. The wild animals in this area are only small animals such as frogs, snakes, etc and birds like mountain sparrows, mountain hawks, thrushes, etc. The project site has been leveled substantially and no vegetation is involved. No wild animals and plants listed in the National Catalog of Key Protected Wild Plants and the National Catalog of Key Protected Wild Animals are discovered in the assessment area. 4.3 Social Environment 4.3.1 Administration Area and Population The Project is located in Lingui County. Lingui County has a total population of 450,000 (including an agricultural population of 395,000 and a non-agricultural population of 55,000), including an ethnic minority population of 31,000. Administering 8 townships and 6 towns, and 165 village (residential) committees, Lingui County has

29 a total area of 2,202 square kilometers, including a land area of 2,171.83 square kilometers (comprising of 35,441 hectares of arable land, 28,494 hectares of paddy fields and 6,947 hectares of dry land) and a water area of 30.17 square kilometers and a forest area of 1,114,600 mu. 4.3.2 Society and Economy According to the Year 2014 government work report of Lingui County, the County accomplished the gross product value of CNY 19.703 billion in 2013, up by 17.4%, a gross fixed assets investment of CNY 21.715 billion, up by 26.2%, an organizational financial revenue of CNY 2.109 billion, up by 16.9%, an added value of industrial enterprises above designated size of CNY 10.525 billion, up by 27.2%, a per capita disposable income of urban residents of CNY 29,028, up by 10.9% and a per capita net income of rural residents of CNY 9,991, up by 15.6%. 4.3.3 Education and Culture In Lingui District, there are 46 kindergartens with 8608 pupils on campus, 110 primary and middle schools, including 90 primary schools, 15 independent junior middle schools and 5 senior middle schools respectively having 28,092, 12,644 and 7,114 students on campus. The kindergartents have a faculty of 608 persons; the primary schools 2,096 persons, including 1,856 full-time teachers; and the middle schools 1927 persons, including 1,728 full-time teachers. 4.3.4 Transportation The project site in Lingui New District is conveniently connected with surrounding areas through a number of first-class trunk roads. The Jichang Road located north of the planned area is an important thoroughfare connecting Liangjiang International Airport and downtown Guilin; Wanfu Road located south of the project site is an important thoroughfare connecting the industrial park and the southern part of the urban area; Guiyang Road, an important north-south road, connects up the urban center, the Yanshan Block and the county town of Yangshuo County; Linyan Road is an important link road between Lingui and Yanshan; Linsu Road It is a fast track connecting Suqiao Industrial Park. The well-developed road network in the neighborhood links Lingui New District to Hunan Province to the north through Xing'an and Quanzhou, and Liuzhou and Nanningo and the Beibu Gulf Economic Circle to the west through Yongfu, and Wuzhou and Guangdong Province to the southeast through Yangshuo and Pingle to benefit from the economic radiation from the Pearl River Delta. 4.3.5 Domestic Water Consumption in the Project Area Residents around the project site are mainly villagers from Lingshang, Shanzao, Dalv, Xiaolv and Taiping Village as well as residents of Wuhu International Residential Community and Pattaya Residential Community. Tap water is the main source of drinking water and for some villages having no access to tap water pipelines, bottled water is supplied for drinking, with the groundwater only used for domestic activities. The reclaimed water to be generated after the completion of the project and replenished into the local surface water system will not affect the daily water consumption of the local residents.

4.4 Status Quo Investigation and Evaluation of Environmental Quality 4.4.1 Status Quo Investigation and Evaluation of Ambient Air Environment Quality This status quo investigation is carried out in order to learn about the status quo of environmental quality of the project are. Results of investigation indicate that the project area belongs to Class II functional zone and follows Class II standard specified in Ambient Air Quality Standard (GB3095-2012). 1. Monitoring sites 1 monitoring site is set up for this status quo monitoring of ambient air quality as shown in Table 401.

Table 4-1: Status quo monitoring site and its location related to the project site

Direction and distance from the S.N Description of monitoring site project site

Dormitory building of Guilin Fuxin 15m from the northwest boundary of 1# Food Co., Ltd. to the northwest of the the project site project site

2. Monitoring contents

The daily average values of TSP, PM10, NO2, SO2 will be monitored and the ground meteorological elements such as ground wind speed, wind direction, air temperature and air pressure will be observed. 3. Monitoring time and frequency

The daily sampling time for monitoring of the daily average values of TSP, PM10, NO2, SO2 will be no shorter than 20 hours and the monitoring will be carried out on a continuous basis for 2 days. 4. Evaluation standard The ambient air quality evaluation for the project will follow Class II standard specified in the Ambient Air Quality Standard (GB3095-2012). Table 1-1 shows the relevant pollutants and their concentration limits. 5. Sampling and analysis method Table 4 -2 Analysis methods and minimum detection limits of air environment monitoring factors

Test items Test standards / methods Detection limits

TSP GB/T15432-1995 Weight method 0.001mg/m3

3 PM10 HJ618-2011 Weight method 0.01 mg/m

3 SO2 HJ 482-2009 Formaldehyde absorption - pararosaniline 0.004 mg/m

Test items Test standards / methods Detection limits spectrophotometry

HJ 479-2009 Naphthylethylenediamine hydrochloride NO 0.003 mg/m3 2 spectrophotometry

6. Monitoring data and evaluation results The monitoring units and meteorological parameters in the monitoring period are shown in Table 4-3. The air environment quality status quo monitoring report is provided in Annex 6. Table 4-3 Meteorological parameters in the monitoring period

Air Wind Wind Date of Time of Temperature Humidity pressure speed direction monitoring monitoring (℃) (%) (KPa) (m/s) (angle)

08:00 10.2 100.36 60 0.8 5

2018.1.16 14:00 14.8 99.8 58 0.8 15

20:00 12.3 100.12 58 1.0 10

02:00 12.2 100.68 56 0.8 50

08:00 12.8 101.16 58 0.8 75 2018.1.17 14:00 22.5 99.92 52 0.8 70

20:00 18.3 100.54 57 1.0 35

2018.1.18 02:00 13.7 100.60 56 1.0 20

Statistical results of ambient air quality monitoring are shown in Table 4-4.

Table 4-4 Monitoring results of daily average values of environmental quality status

Unit: mg/m3

No. 1 Dormitory Building of Fuxin Food Co., Ltd. Date of sampling TSP PM10 NO2 SO2

16 January 0.247 0.126 0.043 0.005

17 January 0.269 0.133 0.045 0.005

It is known from the above monitoring results that the various monitoring factors of TSP, SO2, NO2, and PM10 in this area meet Class II standard specified in Ambient Air Quality Standard (GB3095-2012).

4.4.2 Status quo of surface water environmental quality Surface water in Lingui District mainly comprises of lakes, ponds and planned water systems in Lingui New District. The surface water around the project site is Xiaotaiping River, which belongs to a Class IV water system functional zone following Class IV standard specified in the Environmental Quality Standards for Surface Water (GB3838- 2002). 1. Layout of monitoring cross sections Totally 3 cross sections are arranged for this surface water monitoring. See Table 4-5 for details. Table 4-5 Cross sections for surface water environment monitoring in the Project

SN River Position

Xiaotaiping Cross section located 500m upstream of effluent discharge outlet of 1# River Lingui District WWTP

Xiaotaiping Cross section located 500m downstream of effluent discharge outlet 2# River of Lingui District WWTP

Xiaotaiping Cross section located 5000m downstream of effluent discharge outlet 3# River of Lingui District WWTP

2. Monitoring contents Totally 11 items are monitored, including water temperature, pH value, TSS, COD, DO, BOD5, NH3-N, TP, anionic surfactant, petroleum, and fecal coliforms. 3. Monitoring time and frequency The surface water monitoring was carried out from January 16 to January 18, 2018 continuously for 3 days. A mixed water sample was taken from each section per day. 4. Evaluation standard The Xiaotaiping River, the surface water body in the project evaluation area, belongs to the Class IV water body functional area implementing Class IV standard specified in the Environmental Quality Standards for Surface Water (GB3838-2002). The standard values are shown in Table 1-2. 5. Sampling and analysis methods

Table 4-6 Analysis Methods and Detection Limits for Surface Water Environment Monitoring Factors

Monitoring factors Analysis Methods Detection Limits

GB/T 13195-1991 Thermometer measurement Water temperature 0℃ method

pH GB/T6920-1986 Glass electrode method 1 pH

TSS GB11901-1989 Gravimetric method 1mg/L

Monitoring factors Analysis Methods Detection Limits

GB/T11893-1989 Ammonium molybdate TP 0.01mg/L spectrophotometric method

HJ535-2009 Nessler’s reagents spectrophotometer NH3-N 0.025mg/L method

Fecal coliform HJ 755-2015 Paper quick method 20MPN/L

Petroleum HJ637-2012 Infrared spectrophotometric method 0.01mg/L

DO GB/T7489-1987 Iodometric method 0.2mg/L

Methods for Monitoring and Analysis of Water and Wastewater (4th Edition) --- Fast confined catalytic COD 5 mg/L digestion-spectrophotometer (including spectrophotometer)

Water quality Determination of anionic surfactant BOD5 Ethylene blue spectrophotometric method 0.5 mg/L GB7494-87

GB7494-1987 Ethylene blue spectrophotometric Anionic surfactant 0.05 mg/L method

6. Evaluation methods The single factor evaluation method recommended in the Technical Guidelines for Environmental Impact Assessment is used for evaluation. The formula for the standard index of the single water quality factor I at Ponit j is:

Si,j=Ci，j/Cs，i Where:

Sij——the standard index of pollutant i at monitoring point j, standard index larger than 1 indicates water is polluted by pollutant I;

Cij——concentration of pollutant i at monitoring point j; Csi—— surface water quality standard of water quality parameter i.

Water quality index of pH is:

pH j − 7.0 ＞ (pH 7.0) S = j

pH. j pH su − 7.0

7.0 − pH j S pH . j = (pHj≤7.0) 7.0 − pH sd

Where:

34 pHj——measured pH at Point j；

35 pHsd——pH bottom limit of surface water quality standard; pHsu— —pH upper limit of surface water quality standard;

The standard index of DO is:

DO f − DO j SDO, j = DO f − DOs DO j  DOs

DO j = 10 − 9 SDO, j DO  DO DOs j s

468 DO = f 31.6 + T Where:

SDOj——water quality index of DO;

DOf——saturated DO level at a certain water temperature and water pressure condition, mg/L;

DOj——measured level of DO，mg/L； DOs—— standard limits for DO evaluation，mg/L； T—— water temperature，℃ Standard index of water quality parameter greater than 1 indicates that the water quality parameter exceeds the limits specified in the water quality standard; a greater standard index of water quality parameter indicates a more severe noncompliance with the water quality standard 7. Monitoring Results and Evaluation Conclusion Monitoring results for the various surface water sections are listed in Table 4-7 while the Surface Water Environment Quality Status Monitoring Report is included in Annex 7.

Table 4-7 Surface water quality monitoring results Unit: mg/L (unless otherwise noted)

Water Item pH value temperature TP NH3-N SS Petroleum Site (dimensionless) (℃)

Standard / 6~9 ≤0.3 ≤1.5 ≤60 ≤0.5

No. 1: 500m 14.6 7.25 0.4 9.42 6 ＜0.01 upstream of effluent discharge 14.8 7.26 0.45 9.24 7 0.01 outlet of Lingui District WWTP 14.5 7.31 0.43 8.74 6 0.01

No. 2: 500m 15.2 7.26 0.44 8.04 5 0.01

Water Item pH value temperature TP NH3-N SS Petroleum Site (dimensionless) (℃) downstream of effluent discharge 15.4 7.35 0.51 7.78 6 ＜0.01 outlet of Lingui District WWTP 15.3 7.28 0.48 7.56 5 ＜0.01

14.8 7.23 0.49 6.18 5 0.01 No. 3: 5000m downstream of 14.9 7.24 0.52 6.23 6 0.01 effluent discharge outlet of Lingui District WWTP 14.6 7.38 0.51 6.52 5 0.01

Item Fecal coliforms Anionic DO COD BOD5 / Site (MPN/L) surfactant

Standard ≥3 ≤20000 ≤30 ≤6 ≤0.3

No. 1: 500m 7.8 3.5×103 37 18.4 0.09 / upstream of effluent discharge 7.9 2.8×103 38 29.3 0.10 / outlet of Lingui District WWTP 8.0 2.8×103 39 17.8 0.09 /

No. 2: 500m 8.3 5.4×103 33 16.1 0.09 均 / downstream of effluent discharge 8.4 5.4×103 38 10.8 0.10 / outlet of Lingui District WWTP 8.4 3.5×103 35 16.3 0.10 /

No. 3: 5000m 8.1 2.8×103 38 6.2 0.09 / downstream of effluent discharge 7.9 3.5×103 34 4.9 0.09 / outlet of Lingui District WWTP 8.1 2.8×103 36 6.3 0.09 /

It can be seen from Table 4-7 that the monitored values of total phosphorus, ammonia nitrogen, chemical oxygen demand and five-day chemical oxygen demand of the monitored sections exceed Class IV standard of Environmental Quality Standards for Surface Water (GB3838-2002). It was also found that the concentration detected downstream of the effluent discharge outlet of the WWTP is lower than that upstream mainly because that the agricultural non-point sources and rural domestic pollution sources are distributed in the area and the rural domestic sewage is not systematically collected. Pollutants geneated from the randomly piled rural domestic garbage are carried by rainwater enters the water bodies, resulting in the non-compliant concentration of some monitoring factors. The effluent from the WWTP plays a role in diluting the concentration of surface water pollutants. At present, Lingui New District is carrying out comprehensive environmental improvement measures, such as urban sewage interception and separate drainage of rainwater and sewage. These efforts, combined with the implementation of this project, will further reduce regional sources of water pollution and improve the surface water environment.

4.4.3 Status quo investigation and evaluation of acoustic environment quality 1. Layout of monitoring sites Totally 5 noise monitoring sites are arranged for this acoustic environment monitoring and the locations of such monitoring sites are indicated in Table 4-8.

Table 4-8 Layout of noise monitoring sites under the Project

SN Description Position

1m outside the boundary of 1# East of the land parcel boundary of the Project project site

1m outside the boundary of 2# South of the land parcel boundary of the Project project site

1m outside the boundary of 3# West of the land parcel boundary of the Project project site

1m outside the boundary of 4# North of the land parcel boundary of the Project project site

Guilin Fuxin Food Co., Ltd. dormitoring building 15m from northwest 5# northwest of the project site boundary of project site

2. Monitoring factor Continuous equivalent sound level A (LeqA) 3. Monitoring method The monitoring will be carried out using the measurement method specified in GB3096-2008 Environmental Quality Standards for Noise. 4. Monitoring frequency Monitoring frequency: continuous monitoring for 2 days at working hours in day and at 22:00 – 24:00 in night, with one measurement per day and per night. 5. Monitoring data and result analysis Monitoring results for noise are listed in Table 4-9 while the Acoustic Environment Quality Status Monitoring Report is included in Annex 8.

Table 4-9 Status quo monitoring results of environmental noise Unit: dB(A)

Day Night Monitoring Monitoring

site date Standard Standard Leq Deviation Leq Deviation value value

No. 1 east 16th January 57.6 Satisfied 47.8 Satisfied boundary of 60 50 project site 17th January 58.7 Satisfied 48.8 Satisfied

Day Night Monitoring Monitoring

site date Standard Standard Leq Deviation Leq Deviation value value

No. 2 south 16th January 55.4 Satisfied 44.6 Satisfied boundary of 70 55 project site 17th January 57.3 Satisfied 45.6 Satisfied

No. 3 west 16th January 53.6 Satisfied 44.2 Satisfied boundary of 60 50 project site 17th January 55.2 Satisfied 45.2 Satisfied

No. 4 north 16th January 54.2 Satisfied 45.3 Satisfied boundary of 60 50 project site 17th January 56.5 Satisfied 46.4 Satisfied

No. 5 16th January 53.0 Satisfied 43.7 Satisfied Dormitory building of 60 50 Guilin Fuxin Food Co., 17th January 54.4 Satisfied 45.5 Satisfied Ltd.

It can be seen from Table 4-9 that the noise monitoring results in day time and night time at the monitoring sites on the east, west and north boundaries of the project site and the closest sensitive points meet the requirements of Class 2 areas specified in the Environmental Quality Standards for Noise (GB3096-2008) while those on the south boundary of the project site can meet the standard for Class 4A areas specifiedin the "Environmental Quality Standards for Noise" (GB3096-2008), indicating that the acoustic environment of the project area is in good condition.

5. Environmental Impact Assessment and Mitigation Measures Certain impacts will be generated by the Project on the surrounding environment during the construction period and operation period, including the impacts on water environment, air environment, acoustic environment and ecological environment. In this section, quantitative or qualitative analysis will be conducted over the environmental impacts during the construction period and operation period and corresponding environmental protection measures will be put forward. 5.1 Environmental impact analysis and mitigation measures in the construction period 5.1.1 Air environment impacts and mitigation measures I. Environmental impact analysis As the Project will be built in the site of the existing WWTP with limited land area, no construction camps will be arranged and the construction team is composed of construction personnel at that time. Therefore, the main air pollution sources during the construction period include: 1). Dust, which mainly comes from construction and excavation activities, transportation and loading and unloading of earthwork and building materials, and mixing of materials such as lime soil and concrete, dust raised by wind from sand and stone aggregate piles and by vehicles passing on unpaved roads; 2). Exhaust gas pollutants discharged by construction machinery and transportation vehicles; 3). A small amount of exhaust gas generated from processes of wall painting, spraying, etc. during the improvement activities. 1. Construction dust The dust pollution generated by the construction activities in the Project mainly comes from the processes of earthwork fill and excavationand the loading and unloading of materials. According to the relevant data, the dust-generating particulate matters are distributed as follows: 8% with a particle size of <5μm, 24% of 5-20μm, and 68% of >20μm. On the construction sites and the access roads, there is a large quantity of particulate matters within such range of dust-generating particle sizes and dust pollution may easily happen. According to the monitoring results of construction sites in similar areas, the daily average concentrations of TSP at positions located 50m and 200m away from the construction sites are 1.13mg/m3 and 0.47mg/m3 respectively. 2. Transportation dust Dust generated from transportation is a very important source of pollution. According to relevant surveys, dust generated by the transportation vehicles is related to the condition of road pavement and the speed of vehicles and accounts for about 60% of the total amount of dust. For vehicles travelling on road surfaces of the same cleanliness, the faster the vehicles travel, the greater the amount of dust will be generated; At the same travelling speed, the worse the road cleanliness is, the greater the amount of dust will be generated. 3. Exhaust gas from construction machinery and transportation vehicles Exhaust gas emitted from construction machinery and transportation vehicles mainly contains CO and NOx. The construction machinery, mostly large machinery and with

41 large unit emission factors, is, however in small quantity and distributed in a decentralized way, and thus involves a relatively low pollution level. Monitoring results of similar projects indicate that the average hourly concentration and daily average concentration of CO are respectively 0.2 mg/m3 and 0.13 mg/m3 at a distance of 50 meters from the construction site, smaller than Class II standard limits of 1-hour and 24-hour average concentration specified in the Ambient Air Quality Standard (GB3095- 2012) (i.e. 10mg/m3 and 4mg/m3, respectively); the hourly average concentration and 3 3 24-hour average concentration of NO2 are 130μg/m and 60μg/m , respectively, satisfying the requirements of the hourly average concentration and the daily average concentration limit (200 μg/m3 and 80 μg/m3) specified in the "Ambient Air Quality Standard" (GB3095-2012). Therefore, the exhaust gas from construction machinery and vehicles generates insignificant impacts on the ambient air beyond the distance of 50m. 4. Exhaust gas from improvement works Decorative materials such as plywood, paint and varnish used in the decoration works contain a certain amount of volatile toxic gases such as formaldehyde, benzene and toluene, which, if exceeding the standard in volume, will bring local pollution to indoor and outdoor air and cause harms to staff health. Some solvents used in the decoration process will be volatilized into the air for a 1-month period in the decoration stage. Such impacts will be gradually reduced as time elapses II. Mitigation measures For the excavation of earthwork, transportation of earthwork and materials, and construction of buildings and structures in the construction period of the Project, the Environmental and Social Management Plan will be accompanied with corresponding environmental protection implementation procedures to regulate the construction activities and mitigate the impact of construction dust. The main measures to be taken include: 1. The implementation agency and the construction contractors shall submit dust pollution prevention and control plans to the construction and environmental protection authorities and incorporate dust pollution prevention and control into the scope of project supervision so as to strengthen the environmental supervision and law enforcement inspection of construction dust. 2. The construction sites shall be sprayed with water 4 to 5 times a day to suppress dust and effectively control construction dust so as to minimize the impact of construction dust on the surrounding environment. 3. The main transportation roads shall be paved and covered with straw mats to reduce dust. All temporary roads shall be kept clean and humid. 4. The building materials shall be stockpiled in a relatively concentrated way and certain dust prevention measures shall be taken to suppress dust. 5. Dust-proof mats shall be placed at the entrance and exit of the construction site. After entering the site, the transport vehicles shall slow down to reduce dust; high- pressure water guns should also be provided in the construction sites to wash the body and tires of vehicles entering and leaving the construction site so as to reduce the amount of dust generated by transport vehicles and reduce the impact of transport vehicles on the air environment along the route.

6. Transportation vehicles shall be covered with tarpaulin to avoid material spillage during transportation and transportation routes with less impact on the surrounding environment shall be selected. 7. Pre-mixed concrete and pre-mixed mortar shall be used in all construction sites to prevent in-situ mixing of concrete and mortar and reduce the amount of dust on the construction sites. 8. During the construction period, the buildings shall be enclosed with curtains to avoid dust. 9. For the exhaust gas emitted by automobiles and mechanical equipment during the construction period, the construction contractors shall use transport vehicles and construction equipment complying with the national standards of pollutant emission. All fuel vehicles and construction equipment shall be equipped with exhaust gas processors to achieve compliant emission according to the environmental protection requirements; 10. Reasonable construction processes shall be designed and reasonable construction organization and plans shall be developed to reduce repeated operations; 11. Environment-friendly decoration materials shall be selected for the decoration works; 12. After the completion of the construction works, the construction sites occupied for the Project shall be vegetated in a timely manner. 5.1.2 Surface water environment impacts and mitigation measures I. Environmental impact analysis In the construction period, construction wastewater and domestic sewage will be generated. 1. Construction wastewater Construction wastewater may be generated from watering of buildings, washing and maintenance of construction machinery. In a small amount, the construction wastewater mainly contains pollutants such as sediments, suspended solids and petroleum. As the construction area is located in the existing WWTP plant area, siltation may easily occur in the construction area and its surrounding pipelines, and impacts may even be generated on the treatment effect of the WWTP. 2. Domestic sewage As no construction camps will be provided under the Project, domestic sewage generated during the construction process is mainly domestic sewage produced by workers washing hands and toilets and the main pollutants are COD, BOD5, SS, NH3- N, etc.. In a small amount, such domestic sewage will be treated in the septic tank and then be directly discharged into the sewage treatment system of the Lingui District WWTP (East) for further treatment before compliant discharge. II. Mitigation measures 1. Where mixing operations are carried out on the construction site, sedimentation tanks shall be set at the front of the mixers and the washing sites of transport vehicles so that wastewater is discharged into the sedimentation tanks and then recycled after sedimentation and treatment and used for dust suppression.

2. Gullies shall be provided around the construction sites to collect construction wastewater, such as wastewater of concrete curing and wastewater leaked and discharged from the construction site. After sedimentation treatment, the wastewater will be used for dust suppression on the construction site. All wastewater collection and treatment facilities on the construction site shall be equipped with leak-proof and antiseepage measures. 3. Construction machinery shall be washed and cleaned at designated sites, where gullies and simple but effective degreasing tanks will be provided to collect oily wastewater generated from operations like machinery washing. Sedimentation tank and grease trap shall be constructed in the project area. Construction wastewater shall be recycled and reused to suppress building dust. Sludge in the sedimentation tanks shall be cleaned regularly and transported to the landfill for disposal. 4. Stronger efforts shall be made in the management of construction processs to prevent the leakage of oils during the operation and cleaning of the construction machinery. 5. Building materials such as cement, sand and lime shall be piled up in a centralized manner and certain rain-proof measures shall be taken. The above-mentioned building materials spilled in the construction and transportation process shall be cleaned in time to prevent the pollution caused by such substances carried away by rain runoff. 6. Domestic sewage generated by the construction workers shall be treated in septic tanks and then discharged into the sewage treatment system of the Lingui District (East) WWTP. 5.1.3 Acoustic environment impacts and mitigation measures I. Environmental impact analysis The construction noise in this Project mainly comes from construction machinery and transportation vehicles and is periodical, temporary and unfixed. Different construction plants generate different noises. The main noise sources are shown in Table 5-1. Table 5-1 Noise levels of key construction machinery and equipment Unit: dB(A)

S.N Construction machinery Measured noise level (at a distance of 5m)

1 Loaders 90

2 Trucks 87

3 Pumps 80

4 Vibrators 79

5 Bulldozers 90

6 Excavators 83

7 Sludge suction pumps 80

It can be seen from Table 5-1 that superimposition occurs to noise generated by each device when multiple mechanical devices are working at the same time. Predictive calculation indicates that the noise increase after superimposition is within 3dB (A). The distance attenuation of noise generated by the main construction equipment is shown in Table 5-2.

Table 5-2 Predicted noise value at different distances Unit: dB(A)

Noise Distance(m) source Construction machinery intensity (at a 15 30 50 80 100 150 200 300 500 Loaders distance of 5m)

Trucks 85 75.5 69.4 65.0 60.9 59.0 55.5 53.0 49.4 45.0

Pumps 87 77.5 71.4 67.0 62.9 61.0 57.5 55.0 51.4 47.0

Vibrators 80 70.5 64.4 60.0 55.9 54.0 50.5 48.0 44.4 40.0

Bulldozers 79 69.5 63.4 59.0 54.9 53.0 49.5 47.0 43.4 39.0

Excavators 85 75.5 69.4 65.0 60.9 59.0 55.5 53.0 49.4 45.0

Construction 83 80.2 74.2 69.7 65.6 63.7 60.2 57.7 54.2 49.7 machinery

It can be seen from the prediction results in Table 5-2 that the impact range of the mechanical noise in the earthwork construction stage is within a distance of 150m from the sound source in day time and 500m at night when no barrier exists between the sound source and the sound receiving point, Results of survey indicate that the main environmental protection target affected by the project construction is the dormitory building of Guilin Xinfu Food Company. II. Mitigation measures For the processes of earth and stone excavation, earthwork and material transportation, building and structure construction during the construction period of the Project, the environmental and social management plan incorporates corresponding environmental protection implementation procedures to regulate the activities in the construction period and mitigate the noise impact. The main measures to be taken include: 1. 2.5m high sound insulation wall made of hollow concrete bricks shall be installed around the construction site to ensure that the noise on the boundary of the construction sites meets the requirements of the “Environmental Noise Emission Standard for the Boundaries of Construction Sites” (GB12593-2011). 2. Low noise devices shall be chosen. For high-noise equipment such as pile drivers, air compressors, electric saws, and pneumatic picks, exhaust mufflers and mobile sound insulation hoods shall be installed to improve engine noise insulation and reduce vibration.

3. Reasonable arrangements shall be made for the construction sites to avoid simultaneous operation of multiple large and high-noise machines at the same construction site and at the same time. Mechanical equipment generating large noises shall be located on the far side of the construction site from the residential areas if possible. 4. Operations shall be forbidden at noon and night. If continuous construction at night is necessary, credentials shall be issued by the construction administration department and approval shall be granted by the environmental protection administration department, with announcement made to local residents. 5. Power machinery and equipment shall be regularly repaired and maintained to avoid the increase of the sound pressure level of the equipment due to the vibration of the loose parts or the damage of the muffler. The equipment shall be turned off immediately after it is no longer in service. 6. Construction machinery and equipment shall be regularly maintained and repaired to keep them in good condition for the purpose of noise reduction and extended service life of equipment. 7. A temporary sound barrier shall be installed on the side near the dormitory building of Guilin Xinfu Food Company. 5.1.4 Analysis of environmental impacts of solid wastes and mitigation measures I. Environmental impact analysis Solid wastes generated in the construction period of the Project mainly comprise of construction solid wastes and domestic solid wastes generated by construction workers. 1. Construction solid wastes There are large differences in the types and quantities of solid wastes generated in different stages of the construction process, which is generally divided into the following stages: 1) Site clearing stage: including clearing and grubbing on the construction sites, which mainly generate solid wastes such as weeds, solid waste such as waste paper and plastic bags existing on the sites. 2) Earthwork construction stage: including excavation of foundation pits, excavation of earthwork, etc. The main solid waste generated in this stage is construction spoil, the impact of which is more often reflected as soil erosion. 3) Groundwork construction stage: including piling, masonry foundation, etc. The construction wastes generated at this stage are mainly spoil, concrete pieces and waste steel. 4) Structure construction stage: including steel, concrete structure, steel-wood structures, masonry structures, etc. The construction waste generated at this stage mainly includes spoil bricks and tiles, concrete fragments, scrap steel bars, construction scraps and so on. 5) Decoration stage: including outdoor and indoor decoration. The construction wastes generated at this stage mainly include waste paint, waste varnish, waste tiles, waste marble blocks, and waste building packaging materials.

2. Domestic solid wastes The domestic garbages generated by construction workers mainly include cans, mineral water bottles, plastic bags, disposable lunch boxes, and the like. Due to the high content of pollutants in these domestic garbages, adverse impacts will be generated on the landscape and odor impacts will be generated on the surrounding environment, if not properly treated. II. Mitigation measures 1. Construction wastes shall be subject to classified treatment. All efforts shall be made to achieve recycle of some reusable construction wastes, such as steel bars, to avoid waste of resources while the non-reusable construction wastes shall be reported to the local construction authority in accordance with relevant regulations; construction wastes shall be stockpiled at designated sites and cleared away in a timely manner. 2. Vehicles transporting construction waste and spoils shall be equipped with full- enclosure transportation devices, safety and loading and unloading recorders and corresponding construction waste sorting and transport equipment. 3. Concrete washing platforms, sedimentation tanks and flushing equipment shall be installed at the entrances and exits of construction sites. Vehicles transporting construction wastes shall be fully enclosed in operation and the vehicle wheels shall be washed when leaving the construction site so that no mud is spilled on the roads . The transportation vehicles shall travel along approved routes and dump the solid wastes at approved locations. 4. Domestic garbages generated by the construction workers shall be collected uniformly and shall be handled by the sanitation authorities. 5. Earth and stone produced from foundation excavation shall be transported to and stockpiled at designated locations according to the regulations of the relevant authorities. 6. In the construction process, stronger efforts shall be made in construction management and civilized construction so as to minimize the impact on the surrounding environment and protect the environment in the construction stage. 5.1.5 Analysis of impacts on ecological environment and mitigation measures I. Environmental impact analysis The ecological impacts of the Project in the construction stage are mainly reflected in the following aspects: 1. Earthwork excavation, filling, mechanical rolling and other construction activities during the construction period disturb topsoil structure, reduce soil erosion resistance, and damages to the original soil and water conservation facilities, resulting in exposed surface, which, under the influence of surface runoff, will cause soil erosion. 2. Dust and noise in the construction stage will have adverse effects on animals and plants in the area. The dust generated will affect the photosynthesis of nearby plants, indirectly affecting the normal reproduction of plant-feeding animals and the normal functioning of regional ecosystem. II. Mitigation measures 1. Temporary drainage

During the construction process, the drainage function of the project area will not be able to perform since the drainage works in the project area will remain imperfect for a certain period of time. Therefore, appropriate measures shall be taken to assist local drainage and assure smooth drainage so as to avoid soil erosion caused by scouring or soaking to the best possibility. 2. Temporary coverage To reduce the secondary soil erosion caused by the rainwater and rainwater runoff in the earth drainage facilities in the construction site, it is planned that plastic sheets shall be used to cover the inner slope of the soil drainage ditch and sedimentation tanks. Upon the completion of the construction works, the plastic sheets shall be collected and processed in a uniform way. 3. Temporary fencing walls shall be built around the project site before the project is commenced and the construction spoil will be cleared and transported and backfill shall be compacted in time. 4. During the construction stage of the Project, the excavation and filling shall be carried out piece by piece and batch by batch and the construction activities shall be carried out in an orderly manner. 5. The construction roads shall be hardened and paved to reduce the impact of dust on the local environment. Transportation of earthwork and materials shall strictly abide by the work procedure and dump trucks in good condition shall be used to avoid excessive loading and prevent the spillage of loose soil and stone, and reduce soil erosion. 6. Upon the completion of the project, the project site shall be greened as much as possible to improve the ecological environment in the project area. 5.2 Environmental impact analysis and mitigation measures in the operation stage 5.2.1 Analysis of positive benefits in the operation stage of the Project After the upgrading works under the Project are implemented, the effluent quality will be improved to Class 1A standard. The water quality condition of both influent and effluent are shown in Table 5-3. The changes of pollutants before and after the technical improvement are shown in Table 5-4. Table 5-3 Water quality conditions of influent and effluent of the WWTP

Rate of SN Item Influent (mg/L) Effluent (mg/L) removal (%)

1 COD 181 ≤50 ≥72.4

2 BOD5 120 ≤10 ≥91.7 3 SS 110 ≤10 ≥90.9 4 TN 18.14 ≤15 ≥17.3

5 NH3-N 11.05 ≤5(8) ≥54.8 6 TP 1.91 ≤0.5 ≥73.8

Table 5-4 Changes of pollutants before and after technical improvement

Total discharge Reduction of Discharge volume of the pollutant of the Discharge volume Reduction from Item volume of whole WWTP after whole WWTP after of existing WWTP “improvement” upgrade WWTP technical technical improvement improvement

Wastewater capacity 1095 0 0 1095 0 (t/a)

COD (t/a) 657 0 91.5 565.5 -91.5

BOD (t/a) 219 0 109.5 109.5 -109.5 Wastewater 5 SS (t/a) 219 0 109.5 109.5 -109.5

NH3-N (t/a) 87.6 0 32.9 54.7 -32.9

TP (t/a) 16.4 0 5.8 10.6 -5.8

Ordinary solid wastes Waste 3650 0 1460 2190 -1460 (t/a) (generating capacity) Grid waste (t/a) 8409.6 0 0 8409.6 0

For a tourist city like Guilin City, infrastructure is the foundation of development of a city's tourism industry. As a part of the upgrading works under the Project, processes of flocculation and sedimentation, fiber bundle filter, UV disinfection, advanced sludge treatment, and plant area deodorization will be added and the efficiency of existing sewage treatment facilities will be improved to reduce pollutant emissions and improve the water quality of nearby water bodies, thus generating significant positive benefits for the quality of water environment in Guilin. The Project will contribute to the reduction of COD, BOD5, SS, TN, TP and NH3-N respectively by 109.5t/a, 109.5t/a, 109.5 t/a, 54.75 t/a, 5.48 t/a, and 32.85 t/a. The reduced volume of pollutants discharged into the rivers may be deemed as a point source to predict its contribution to the pollutant concentration in the rivers. Therefore, the predicted concentration that it contributes to the downstream section may be deemed as a reduction of pollutant concentration in rivers by means of reduction of discharge sources as shown in detail in Table 5-5.

Table 5-5 Reduction of pollutant concentration in rivers thanks to reduction of discharge sources

COD NH3-N BOD TP SS Distance from downstream Reduced Percentage Reduced Percentage Reduced Percentage Reduced Percentage Reduced Percentage section (m) concentrati of standard concentrati of standard concentrati of standard concentrati of standard concentrati of standard on (mg/L) limit(%) on (mg/L) limit (%) on (mg/L) limit (%) on (mg/L) limit (%) on (mg/L) limit (%)

0 0.730 2.4 0.219 14.6 0.730 12.2 0.037 12.2 0.730 1.2

50 0.721 2.4 0.218 14.5 0.721 12.0 0.036 12.1 0.725 1.2

100 0.711 2.4 0.216 14.4 0.711 11.9 0.036 12.0 0.721 1.2

200 0.693 2.3 0.213 14.2 0.693 11.5 0.036 11.9 0.711 1.2

300 0.675 2.3 0.211 14.0 0.675 11.3 0.035 11.7 0.702 1.2

400 0.658 2.2 0.208 13.9 0.658 11.0 0.035 11.5 0.693 1.2

500 0.641 2.1 0.205 13.7 0.641 10.7 0.034 11.4 0.684 1.1

600 0.624 2.1 0.203 13.5 0.624 10.4 0.034 11.3 0.675 1.1

700 0.608 2.0 0.200 13.3 0.608 10.1 0.033 11.1 0.666 1.1

800 0.593 2.0 0.197 13.2 0.593 9.9 0.033 11.0 0.658 1.1

900 0.577 1.9 0.195 13.0 0.577 9.6 0.032 10.8 0.649 1.1

1000 0.563 1.9 0.192 12.8 0.563 9.4 0.032 10.7 0.641 1.1

1500 0.494 1.6 0.180 12.0 0.494 8.2 0.030 10.0 0.600 1.0

49 It can be seen from the above table that, thanks to the upgrading works under the Project, the amount of pollutants discharged into the rivers is reduced, contributing to the reduction of the concentration of pollutants in the rivers. The reduced COD, ammonia nitrogen, BOD, TP and SS are equivalent to 2.4%, 14.6%, 12.2%, 12.2%, 1.2% of the standard values of Class IV water quality standard. Construction of the Project will play a positive role in the improvement of water body quality on the basis of the current situation of noncompliant concentrations of COD, NH3-N, TP in the Xiaotaiping River. As the existing deodorization process is yet to be improved, it is proposed in the Project to adopt ion deodorization method for deodorization of the plant area, with the structures fully enclosed for deodorization and preventing spread of odor and facilitating collection and treatment of odor. Consequently, the Class 2 standard specified in Table 5 Maximum Allowable Concentration of Exhaust Gas Emission on the Boundary of Plant Site included in the "Discharge Standard of Pollutants for Municipal WWTPs” (GB18918-2002) and positive benefits will be brought to the air environment around the project site. Advanced sludge treatment is also a part of this technical improvement. The existing Lingui District (West) WWTP adopts belt pressure filtration for sludge dewatering and generates 10.0t of dewatered sludge with a moisture content of 80%. The new facilities to be constructed in the plant as a part of this technical improvement for advanced sludge treatment will reduce the moisture content of dewatered sludge to below 60% and reduce the amount of dewatered sludge from 10t/d to 4.0t/d. Consequently, the amount of sludge transported out of the WWTP will be reduced by 1460t per year, thus allowing easier transportation and subsequent treatment of sludge . In summary, the upgrading efforts under the Project will contribute to significant reduction of pollutants in wastewater and discharge of exhaust gas and solid wastes. The implementation of the Project will play an indispensable role in improving the living environment of local residents, and enhancing the comprehensive carrying capacity and the operating efficiency of of the city as a whole. At the same time, the regional water environment will get improved and high-standard and modernized urban infrastructure and public service facilities will be constructed to provide strong support and guarantee for the sustainable economic development of Guilin City. 5.2.1 Negative environmental impacts and their mitigation measures in the operation period of the Project Upon the completion of the Project, the key negative environmental impacts to be generated in its operation period will mainly include effluent, odor and noise discharged from the WWTP. 5.2.1.1 Air environment impacts and mitigation measures I. Environmental impacts Odor generated from the WWTP becomes a new source of secondary air pollution in the operation stage. In this Project, odor is mainly generated from the fiber filter, drainage tanks, sludge tanks, sedimentation tanks, lifting pump stations, concentration tanks and advanced sludge treatment facilities. The main pollution factors are hydrogen sulfide, ammonia and odor.

50 As introduced in the “Typical Case Studies of Environmental Impact Assessment”, an odor concentration monitoring was carried out to a wastewater treatment plant with a treatment capacity of 40,000 m3/d and in a day with gentle breeze and at a temperature is 22 °C. The monitoring results indicate that the odor concentrations monitored at locations with a distance of 100m, 200 m and 400 m downwind of the WWTP are respectively 11.0, 4.4 and 1.1, all lower than the control requirements of Class II standard specified in GB18918-2002 "Discharge Standard of Pollutants for Municipal WWTPs" (odor concentration 20). Odor concentrations at locations with a distance of less tha 100m downwind of the WWTP can meet the standard. In this Project, apart from sludge dewatering, integrated collection and treatment of odor generated during the drying process will also be achieved and odor generated in an unorganized way will be collected and subject to ion deodorization. Experiences of a number of practical examples indicate that the ion deodorization method can achieve a 90% deodorization efficiency. Since odor source intensity basically has a linear relation with its degree of environmental impact, a 10% reduction of the odor source intensity represents a 10% reduction of the degree of impacts on the boundary of the WWTP. See Table 5-6 for details.

Table 5-6 Odor impacts at the WWTP boundary upon completion of the Project

Upwind of plant boundary Downwind of plant boundary

Predicted value Predicted value Predicted value Predicted value of 3 3 3 3 of H2S (mg/m ) of NH3 (mg/m ) of H2S (mg/m ) NH3 (mg/m )

Predicted value 0.0002-0.0005 0.0019-0.0026 0.0003-0.0011 0.0023-0.0033

Standard limit 0.06 1.5 0.06 1.5

It can be seen from the above table that the maximum predicted concentrations of H2S and NH3-N are respectively 0.0005 mg/m3 ad 0.0026 mg/m3 on the upwind boundary of the WWTP and 0.0011 mg/m3 and 0.0033 mg/m3 on the downwind boundary. The odor concentration on all the plant boundaries can reach Class II standard of the maximum allowable concentration of exhaust gas emission on the boundary as specified in Table 4 in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002). II. Mitigation measures 1. The Project proposes to use the ion deodorization method for deodorization in the plant area. In this deodorization process, high-voltage pulse power is discharged to generate a large number of aggregates such as O2- and O2+, which, with strong oxidizing ability and strong activity, collide with the odorous molecules to achieve deodorization through oxidization. 2. The structures will be fully enclosed for deodorization and actions will be taken to prevent the spread and facilitate the collection and treatment of odor. The coarse grid and the lifting pump stations, the fine grid and the sedimentation tank will be enclosed with stainless steel frame covered with sunlight boards while the sludge concentration tanks will be enclosed with stainless steel frame covered with color steel sheets. The biological treatment tank will be enclosed with a cable-membrane structure for deodorization. Using such a method, odor in each of the enclosed structures will be

51 collected and delivered to the ion deodorization devices in a centralized or decentralized way for treatment. Thanks to the aforesaid deodorization arrangements, the environmental impacts of odor will be effectively reduced to satisfy Class II standard specified in the Table 5 Maximum Allowable Concentration of Exhaust Emissions from the Plant Boundary in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002). 5.2.1.2 Surface water environmental impacts and mitigation measures Wastewater during the operation period of the Project is mainly the effluent discharged after sewage treatment and the main pollutants are COD, NH3-N, BOD5, SS and so on. Lingui District (West) Wastewater Treatment Plant has an effluent discharge capacity of 3×104m3/d. The effluent discharge outlet of the WWTP is located at Xiaotaiping River and the effluent treated by the WWTP will reach Class 1A standard specified in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918- 2002). The discharge concentration of COD, BOD5, SS and NH3-N are respectively 50mg/L, 10mg/L, 10mg/L, and 5mg/L and the discharge capacities, which are not significant, are respectively 1.0t/d, 0.2t/d, 0.2t/d, and 0.1t/d. Compared with the existing WWTP, the reduced pollutant emission will contribute to the improvement of the quality of the regional water environment and generate positive environmental benefits. 5.2.1.3 Acoustic environment impacts and mitigation measures I. Environmental impacts The main source of noise of this technical improvement is noises from the new equipment to be added, which are mainly the influent pumps and sludge pumps. See Table 5-5 for the noise intensity. Table 5-5 Analysis of noise impacts of key noise-generating equipment in the WWTP

Noise source intensity dB(A) Equipment With noise silencing and Without control measures insulation measures taken

Sewage lifting pump 80-90 60

Sludge pump 80-90 60

Vacuum pump 70-80 50

Blower 75-80 55

It can be seen from Table 5-5 that, without any noise reduction or control measures, the noise intensity may reach 90dB(A) and, if rubber cushions, shock absorbers and structure enclosure measures are taken, the noise intensity may reduce by 20 dB(A) or so. II. Mitigation measures The following mitigation measures will be taken against noise in the operation period of the Project:

52 1. Low-noise equipment shall be selected upon type selection to control the generation of high noise at the source; 2. For equipment with relatively large noises, independent foundations can be used, and measures such as rubber pads and shock absorbers may be taken at the joints between the foundation and the equipment; 3. Flexible connection may be adopted between the pump and the pipeline to reduce and block the spread of vibrations and pipeline going through the walls shall be provided with an elastic cushion; 4. Stronger efforts shall be made in greening in the plant area and on the plant boundary. Appropriate tree species shall be selected according to the local circustances and tall trees shall be planted around the plant boundary to prevent dust pollution, reduce the impact of noise on the surrounding environment, and achieve the purpose of environmental protection and purification. 5. Management and maintenance of high noise equipment shall be strengthened. 5.3 Equipment maintenance and management measures In order to ensure that the wastewater treatment equipment is in good operating condition, reduce the impact from the major and minor maintenances of equipment on the sewage treatment progress, and promote safe, economic and civilized production in the whole plant, the WWTP to take the following management measures: 1. Equipment manages at all levels shall make proper plans for regular equipment inspection and maintenance; 2. The standby equipment shall be subject to regular duty shifts and tests; 3. Systems for maintenance, lubrication, repair, acceptance, registration, scrapping, and spare part management shall be developed; 4. Scientific equipment management files shall be established and improvements shall be made to equipment troubleshooting plans; 5. Efforts shall be made to provide proper technical training for equipment maintenance and management personnel. For the key equipment of the WWTP, arrangements shall be made for professional training given by the after-sales service personnel of the equipment manufacturers, especially training on the technical requirements and key points of daily maintenance and the troubleshooting skills of basic failures. WWTP equipment shall be subject to proper routine and basic servicing and maintenance and any serious equipment failures shall be promtly reported to the after-sales professonals of the equipment suppliers for timely resolution; 6. Sound equipment maintenance procedures shall be developed. After long-term operation, the production equipment of the WWTP will inevitably have problems such as worn and deformed parts, which will reduce the working efficiency and safety performance of the equipment and lead to equipment accidents. Therefore, the equipment management department needs to set up sound equipment maintenance procedures based on the status of equipment operation to specify specific maintenance contents and enable regular check and adjustment of equipment so as to extend the service life of the equipment and prevent equipment accidents.

53 5.4 Emergency response measures for fuel gas leakage 1. The gas sources shall be cut off and active cooling actions taken to prevent explosion. First of all, all efforts shall be made to figure out the direction and route of the gas pipelines and find and quickly shut off the valves. When the pipeline leakage valve becomes invalid, judgments shall be made over the air pressure, the gas pressure and the size and shape of the leak ports based on the fire condition and the corresponding plugging materials (such as cork stoppers, rubber stoppers, gas capsule plug, etc.) should be prepared. Then, a large amount of misty water shall be sprayed to cool and disperse the objects around the burning area to prevent possible explosion due to the mixing of natural gas with the air. In the event of a natural gas fire in the building, the gas source shall be cut off first before further actions are taken for ventilation and fire extinguishing. 2. When fighting a gas fire, stable combustion shall be maintained before any blocking actions are taken instead of any purposeless action of fire extinguishing. Otherwise, a large amount of flammable gas will be leaked and mix with the air, and explosion will occur when such mixture encounters a fire source, leading to unimaginable consequences. 3. Fire on the combustibles already ignited by the fire source shall be extinguished first to cut off the path of fire spread and control the range of combustion to enable active rescue of the injured and trapped people. 4. The on-site commanders shall pay close attention to various signs of hazard signs. If stable combustion is not resumed after the fire has been extinguished for a long time or the safety valves on the heat-radiated containers show signs of explosions such as flaming, dazzling, swaying, etc., the commanders shall make accurate judgments and issue retreat orders in a timely manner. Personnel on site should quickly retreat to a safe zone after seeing or hearing the pre-specified evacuation signal.

54 6. Social impacts of land acquisition and resettlement The construction activities in the Project will be carried out within the existing land parcel of Guilin (West) Wastewater Treatment Plant and the new advanced sludge treatment workshops, lifting pump stations, dissolution tanks, fiber filters, concentration tanks and other structures will all be distributed in the existing plant area. The specific locations of such facilities are shown in Figure 2. The Project will involve no acquisition of land and thus does not involve any addtional land acquisition and resettlement.

55 7. Alternative Analysis 7.1 Purposes and principles The purpose of alternative analysis is to minimize the environmental impact by optimizing the project design from environmental perspective through comparative analysis of a number of alternatives that may be selected for the Project. The general principles for alternative analysis include: 1. Quantitative comparison: quantifying the environmental impact from project implementation as much as possible for each alternative; 2. Comprehensive comparison: conducting a multi-dimension comparison and analysis of the alternatives from the environmental, technical, economic, and social perspectives; 3. Compatibility comparison: The selected alternative shall be compatible with relevant development planning and standards and the local conditions. 7.2 With-/Without-project analysis Without-project alternative refers to the scenario where the project will not be implemented. Analysis was conducted from the perspectives of environmental benefits and costs and social and economic development, with results summarized in Table 6- 1. Table 6-1 With- / Without- Project Comparison

Category With-project Without-project

1. Calculation results on the basis of full-load operation indicate that urban wastewater treatment efficiency will be increased and pollutant discharge reduced and water environment will be improved; the amount of COD, BOD5, SS, TN and TP to be discharged in the river will be reduced by 109.5t/a, 109.5t/a, 109.5 t/a, 54.75 t/a, 5.48 t/a and 32.85 t/a respectively. 2. Ambient air quality inside and around the WWTP will be improved; ion deodorizer and enclosed deodorization adopted in the Project will contribute to effective control of odor generated in (1) The current status can be maintained, the process of wastewater treatment. i.e. the vegetation will remain intact; Advantages 3. Thanks to the introduction of advanced sludge (2) No water, acoustic and air environment treatment process, impacts from odor generated impacts will be generated during the from sludge will be mitigated. Such sludge construction stage. treatment process allows easy transportation and treatment and ths will reduce environmental impacts in the process of transportation. Thanks to the advanced sludge treatment facilities to be constructed in the plant area under this technical improvement project, the moisture content of dewatered sludge will decrease from 80% to less than 60% and the amount of sludge transported out of the plant will be reduced by 1460t per year. 4. Urban infrastructures will be improved to ensure effective treatment of domestic sewage in Lingui District.

56 Category With-project Without-project

1. Significant risks may arise if the aged equipment in the plant area continues to operate.

2. With the increasing number of government offices, residents and schools

in Lingui District, Lingui District (East) WWTP will become overloaded, and the 1 、 During construction there will be vegetation equipment life and sewage treatment effects damage, and noise and flying dust issues. will be affected, causing significant threat to Disadvantages 2 、 During construction there will be impacts on the surrounding water bodies; traffic and daily travel of local residents. 3. Along with the increase of wastewater, the amount of pollutants discharged into the surrounding water bodies will increase if choosing to maintain the status quo (Class 1B), leading to deterioration of water environment in Guilin. 3. Without sound deodorization facilities, the air environment around the plant and on the boundary will affected.

From social and environmental perspectives, the with-project alternative is more preferable than Summary the without-project alternative.

It can be seen from Table 6-1 that, although the without-project scenario does not generate additional environmental impacts and problems from project construction, the treatment capacity of the WWTP is already inadequate to address the growing sewage and sludge as a result of the increase of population in the district after Guilin Municipal Government is relocated to Lingui District. For the with-project alternative, although implementation of the Project will bring some environmental impacts, most of these impacts can be avoided or mitigated through proper environmental protection measures. It is indicated in the monitoring results that the water body of Xiaotaiping River has been polluted to a certain degree, with COD, NH3-N and TP exceeding the standard limits. Based on the results of calculation of full-load operation of the WWTP, after this project is implemented, the amount of COD, BOD5, SS, TN and TP and NH3- N to be discharged into the River will be reduced respectively by 109.5t/a, 109.5t/a, 109.5/a, 54.75t/a, 5.48t/a and 32.85t/a, implying that the surface water environment will be effectively improved, the polluted rivers will be converted into livable landscaping areas and value of local land will be increased. In addition, the Project can also facilitate the urban and rural economic and social development and generate significant social, environmental and economic benefits. Therefore, from the perspective of promoting social and economic development and environmental protection, the with-project alternative is better than the without-project alternative and the project implementation is necessary. 7.3 Comparison of alternatives 7.3.1 Comparison of alternatives for upgrading the advanced sludge treatment process The Project intends to upgrade the wastewater treatment requirements to Class 1A standard through the introduction of advanced sludge treatment process, for which there many alternatives. Under the Project, two alternatives described as follows will be considered.

Table 6-2 Comparison of alternatives for upgrading advanced sludge treatment process

Alternative 1 Alternative 2 Contents of secondary effluent + coagulation Secondary effluent + coagulation comparison sedimentation + filtration + sedimentation + filtration + active disinfection carbon absorption + disinfection

Treatment effect Good Good

Good treatment effect and stable Excellent treatment effect, good effluent water quality; capable of effluent water quality, stable effectively removing toxic pollutants Advantages treatment effect, wide application, such as trace organic pollutants, trace and capable of stably satisfying of metal ions, color and virus, and Class 1A emission standard. capable of stably satisfying Class 1A emission standard.

Multiple structures, large land Multiple structures, complicated Disadvantages occupation, large investment and operational management stringent technical requirements

Small wastewater treatment WWTPs with stringent requirements on Applicability stations with simple wastewater effluent quality composition

Land space About 700m2 About 1000m2

Cost of investment 550 1000 (CNY10000)

Cost of operation 36 155 (CNY10000/year)

The Project mainly receives urban domestic sewage and the influent contains pollutants with relatively simple composition. In Alternative 2, the secondary effluent + coagulation sedimentation + filtration + disinfection process is sufficient to achieve Class 1A emission standard and better sewage treatment effect than Alternative 1. Although Alternative 2 achieves good treatment Conclusion effect and good effluent quality, multiple structures are needed and more strigent technical and operational requirements and greater investment are involved. From the persectives of technical feasibility and economic rationality, it is proposed to adopt Alternative 2 for advanced treatment of wastewater in the Project.

It can be seen from the comparison of the two alternative processes that Alternative 2 achieves better treatment effect, good effluent quality satisfying Class 1A standard and stable water quality, but it involves higher operational and technical requirements, larger investment, multiple structures and larger land space. At present, the open space available in the Lingui District Wastewater Treatment Plant (Western District) is

58 limited. Although the treatment effect of Alternative 2 is very good, the alternative requires more land in contrast with the tense land use situation in the West District. Alternative 1 is less demanding in both investment and technical requirements than Alternative 2. On the basis of the above comprehensive comparison, it is proposed to select Alternative 1 as the advanced sludge treatment process for the upgrading works of the Project. 7.3.2 Comparison of filter tank alternatives The main structures for the advanced treatment process are the filter tanks and options available include the earlier gas-water backwashing filters and D-type filters as well as the recent fiber bundle deep bed filters, turntable filters, precision microfiltration and active sand filters. The turntable filter or precision microfiltration belongs to surface filtration while the other three belong to deep bed filters. It is planned to conduct a comprehensive comparison of the treatment effects, control, operation management, head loss and land occupation of the four filtration processes of gas-water backwashing sand filter, fiber bundle deep bed filter, turntable filter and active sand filter. Table 6-3 Comparison of filter alternatives

Gas-water Contents of Active sand backwashing Fiber bundle filter Turntable filter comparison filter filter

Filtration speed 4～10 m/h 18～25m/h ≤15m/h 7-10 m/h

Interception Large Relatively large Average Relatively large capacity

Good, with Good, with Filtered water Good, with stable nitrogen removal Relatively good nitrogen quality effluent function removal function

Filtration head 1.5-2.5m 2m 约 0.3m 0.8m loss

Negative Gas-water Gas-water pressure backwashing, backwashing, Air stripping, Cleaning method suction with good effect, good effect, water washing and effect sucton pump + relatively relatively after filtration water washing, complicated complicated with good effect

Reduction of The entangling organic pollutants and detachment of in the effluent can The problem of filters imply risks of only rely on the filter hardening mixing with the Aging filter removal of SS requires strong Problems and quartz sand cloth needs to and the high labor input in countermeasures cushion. be replaced requirements are filter Replacement and periodically; involved for replacement or periodical cleaning nitrogen removal replenishing. of the filter material in the secondary are needed. treatment stage.

Gas-water Contents of Active sand backwashing Fiber bundle filter Turntable filter comparison filter filter

Installed power About 150kw About120kw About 13kw About 38kw

Land occupation About 130m2 About 180m2 About 90m2 About 170m2

Filter installation Relatively Relatively simple Relatively simple Simple and replacement simple

Equipment cost Moderate Moderate Relatively high Relatively high

Civil works cost Relatively high High Low Relatively low

O&M cost Relatively high Relatively high Relatively low Relatively low

It can be found in the above technical and economic comparison that these filters have their own advantages and disadvantages. In addition to high construction investment, the turntable filters have the characteristics of small head loss, less land occupation, and low operation and maintenance cost, and are suitable for upgrading works of WWTPs with limited land space. Compared with the fiber bundle deep-bed filters, the gas-water backwashing filters require a slightly smaller footprint, achieve stable effluent effect, have denitrification function of a certain level, and involve a relatively low equipment investment, suitable for WWTPs with high requirements on effluent quality and land space available for upgrading works. In view of the importance of ecological protection and in order to minimize the pollutants discharged into the water body, filtration processes with stable effect should be selected. Since there is land available for upgrading works in the plant area of Lingui District WWTP, the fiber bundle deep bed filters are selected. 7.3.3 Comparison of disinfection alternatives The disinfection methods commonly used in wastewater treatment mainly include ultraviolet disinfection, chlorine disinfection, ozone disinfection and ClO2 disinfection. Table 6-4 describes in detail the comprehensive comparison of the above disinfection methods. Table 6-4 Comparison of disinfection processes

Contents of Ultraviolet Liquid chlorine Ozone comparison ClO2 Slightly shorter Time of than liquid treatment and Minimal 10～30min 5~10min chlorine contact disinfection Operating cost Average low high High Manufacturing Mainly cost of Low cost of Relatively high high cost electricity reagent Slightly higher 5 times higher than Equipment than liquid Relatively high Relatively low liquid chlorine investment chlorine disinfection disinfection Operation, Simple Simple Complicated Relatively high management equipment equipment equipment

60 Contents of Ultraviolet Liquid chlorine Ozone comparison ClO2 operation operation

Bacteria killing Yes Yes Yes Yes Virus killing A little A little A little Best effect Carcinogens like - - Byproducts None trihalomethanes ClO2 、ClO3 Aldehyde and chloroform Continuous No residual Continuity disinfection by Long Short disinfection residual chlorine Indutrial Applicability Unlimited Unlimited Small WWTPs wastewater, small WWTPs Civil works Large storage Low Low Low requirements area Requiring high Requiring high Control automation and Automation Automation automation and requirements technological technological level level Storage None Leak prevention Prepared on site Prepared on site requirements The above-mentioned sewage disinfection methods are currently in use in China. Chlorine disinfection and CIO2 disinfection both generate by-products. Ozone disinfection involves high operation cost ad high technical requirements. CIO2 and ultraviolet disinfection methods are mainly adopted by small and medium-sized WWTPs, but the CIO2 disinfection involves relatively complicated equipment and high technical requirements. With excellent disinfection effect, the ultraviolet disinfection process is simple and easy to operate and manage and generates no by-products, as is beneficial to water source protection. Considering that ultraviolet disinfections is adopted in most of the WWTPs in Guilin and extensive operation and management experiences have been collected, ultraviolet disinfection will be selected for the Project. 7.3.4 Comparison of alternative advanced sludge treatment processes At present, the deep dewatering technologies available for plate frame filter press sludge dewatering mainly include chemical agent conditioning method, bioleaching conditioning method, photocatalytic oxidation conditioning method, and low- temperature vacuum dewatering and drying. Since the bioleaching conditioning method requires regular purchase and delivery of the patented microbial nutrients and thus involves high operation cost and cumbersome operation while the photocatalytic oxidation conditioning technology is not yet mature, analysis and comparison will be carried out only over chemical conditioning and low-temperature vacuum dewatering and drying processes for this Project.

61 Table 6-5 Comparison of alternative advanced sludge treatment processes

Chemical conditioning + Physical conditioning + Technical process conventional dewatering conventional dewatering equipment equipment Unfavorable to future reuse. Using conventional flocculant Addition of quicklime causes strong results in no incremental sludge alkalinity of the sludge, serious loss and allows extensive choices of Disposal of dried of organic matters, and destructive sludge disposal in the future, sludge effect on the soil and inability of including landfill, reuse as supporting incineration. building materials, and incineration and reuse as landscaping soil. Moisture content of ～ 80～98% 80 98% received sludge Moisture content of ≤60% 60～30% discharge sludge Deep dewatering after additionof Physical means (such as quicklime-PAC or ferric heating, pressure change, chloride-PAM; microwave or electro-osmosis) is used to destroy the biological cell Sludge treatment membrane and cell wall and method release the cell-bound water; used in combination with conventional sludge dehydration. Reaction mechanism Chemical modification Physical modification Deodorization facility Needed Needed Dosage of additives (percentage of dried 30～60% PAM：3-5% sludge weight) Cost of investment 25～40 30～45 (CNY10000/ton) Cost of operation 150～200 150～250 (CNY/ton) Addition of lime is inevitable for conditioning methods requiring addition of chemical agents and will inevitably result in increased amount of sludge and limitation of approaches of subsequent sludge disposal. In such a context and the reality that it is still necessary to rely on Shangyao Sludge Disposal Project for composting disposal of sludge, it is proposed that physical conditioning method will be selected for advanced sludge treatment since addition of lime will not only affect the composting effect, but will also cause long-term soil damage. If physical conditioning methods, such as heating, pressure change, electro-osmosis, microwave digestion, etc., are used for deep dehydration and drying of sludge, the sludge will get conditioned and the moisture contained in the sludge cakes will be fully removed using traditional sludge dewatering equipment. Consequently, the amount of sludge will be greatly reduced to achieve maximum reduction of sludge. In this process, no other additives are required except conventional flocculants. Suitable for sludge treatment of all scales, this process involves no geographical restriction and features in easy purchase of chemical agents.

62 7.3.5 Comparison of alternative sludge drying processes It is necessary to dry and dewater the sludge after pressure filtration. In this Project, it proposed to use the gas-fired boilers to heat and dry the sludge. The process will be analyzed and compared with the sludge drying method of Huaneng Guilin World Tourism City Distributed Energy Project that uses steam pipeline to heat and dry the sludge. Table 6-6 Comparison of alternative sludge drying processes

Steam heating from Huaneng Guilin Heating from Towngas China Technical process World Tourism City Distributed (Guilin) Co., Ltd. Energy Project Heating method Heating from gas-fired boiler Heating from steam pipeline Moisture content of ≤50% ≤50% dried sludge Only requiring the construction of Requiring the construction of a fuel gas pipeline within the 1.5km long steam pipeline to WWTP with a length of about connect Huaneng Guilin World Quantity 200m to connect the municipal Tourism City Distributed Energy fuel gas network at the gate of Project located 800m southeast of the WWTP the Project Cost of investment 300 1600 (CNY10000) Cost of operation 100～150 150～250 (CNY/ton)

Land occupation About 300m2 About 1500m2

From the above comparison, it is known that it is necessary to build a 1.5km long special steam pipeline with an investment of about CNY 16 million if the steam heating process used in the Distributed Energy Project of Huaneng Guilin World Tourism City is selected. In comparison, if the heating scheme of Towngas China (Guilin) Co., Ltd. is selected, the pipelines to be built is only 200m long and involves only an investment of CNY 3 million on the premise that the same dewatering efficiency is achieved, Therefore, the sludge dewatering process of Towngas China (Guilin) Co., Ltd. saves more cost of investment and operation and is selected as the sludge dewatering process of the Project.

63 8. Public participation and information disclosure 8.1 Purposes, approaches and scope of public participation Guilin Integrated Environment Improvement Project intends to apply for loan proceeds from the World Bank to further accelerate the integrated environment improvement and urban environmental infrastructure construction and facilitate coordinated development of local economy and society in Guilin. The implementation of this Project will be beneficial to the improvement of the watershed and urban water environment in the project area and effectively improve the living quality and standard of local people and lay a solid foundation for the sustainable development of Guilin. However, due to the environmental impacts in the construction and operation period of the Project, an announcement of public participation and consultation was issued according to the environmental protection regulations and management rules of China and the requirements of the Safeguards Policy of the World Bank (OP4.01). 8.2 Information disclosure According to requirements in the Interim Measures for Public Participation in Environmental Impact Assessment, the Environmental Information Disclosure Measures (Trial) and the World Bank OP / BP4.01 (Environmental Assessment), BP 17.50 (Information Disclosure), the Project disclosed relevant information by means of online disclosure and field posters. The first round of information disclosure was conducted in the process of EIA of the Project and the second round in the DFR stage of the EIA Report. The 1st EIA information disclosure was made on the website of Guilin Drainage Project Management Office on January 25, 2018 (http://www.guilinps.com/newsview.asp?id=550). See Figure 7-1 for further details. The first round of information disclosure mainly intends to introduce to the public the geographic location and construction works of each subproject, and at the same time a public participation survey was conducted over issues with public concern over the construction of the Project. No public feedback was received during the 1st round of information disclosure. The 2nd EIA information disclosure was made on the website of Guilin Municipal Drainage Project Management Office on April 2, 2018 (http://www.glps.org.cn/newsview.asp?id=554). See Figure 7-5 for further details. The second round of information disclosure mainly intends to introduce to the public the main conclusion of the EIA Report and ways of access to the EIA documents, and at the same time seek public comments on the construction of the Project. In the mean while, as shown in Figure No. 7-6 and 7-7, the printed copies of the EIA Report were placed at Guilin Municipal Drainage Co., Ltd. and Lingui District WWTP for public review. Nno public feedback was received during the 2nd round of information disclosure that lasts from April 2 to April 22, 2019.

Figure 7-1: Print Screen of the Webpage of the 1st Round of Public Participation Carried out by Guilin Municipal Drainage Co., Ltd. Project Management Office

Figure 7-2: Informaiton Disclosure Figure 7-3 Information Disclosure in Shanzao New Village at Fuxin Food Co., Ltd.

Figure 7-4: Information Disclosure at STO Express

Figure 7-5: Print Screen of the Webpage of the 2nd Round of Public Participation Carried out by Guilin Municipal Drainage Co., Ltd. Project Management Office

Figure 7-6: Printed copies of the EIA Report placed at Guilin Municipal Drainage

Co., Ltd.

Figure 7-7: Printed copies of EIA Report placed at Lingui District WWTP

8.3 Public participation Public participation in the Project was implemented mainly by means of questionnaires. During the public consultation survey a total of 100 individual

68 questionnaires were distributed and 95 valid questionnaires recovered with a 95% recovery rate. A total of 5 group questionnaires were distributed with a 100% recovery rate. The key objects of the public survey are sensitive sites directly affected by the Project and those to be benefited after the Project is constructed. In particular, Towngas China (Guilin) Co., Ltd. and Lingui District (East) WWTP, as the linked projects and stakeholders of the Project, were also covered by the public survey. Information on the objects of public survey is included in Table 7-1 and 7-2 and the statistical results are described in Table 7-3 and 7-4. Table 7-1 Basic Information of Participants of the Individual Survey

Basic Basic Item Quantity % Item Quantity % information information

Male 41 43.2 Primary school 19 20.0 Gender Female 54 56.8 Junior Middle 14 14.7 School Senior Middle Farmer School 15 15.8

Worker Specialized 7 7.4 Education Middle School

Student College 13 13.7 Teacher University 24 25.3

Government Master and 3 3.2 officer above

Others Below 20 5 5.26 Occupation / / / 21-30 27 28.42 / / / 31-40 21 22.11 / / / Age 41-50 18 18.95 / / / 51-60 6 6.32

/ / / Above 60 3 3.16

/ / / Not provided 15 15.79

Table 7-2: Group Participants of the Public Survey

S.N Name Representative Contact information 1 Guilin Xinming Machinery Co., Ltd. Zhou Yuanrong 18777334331 2 Towngas China (Guilin) Co., Ltd. Pan Jiawei 15078345887 Guilin Lingui District No. 3 Middle 3 Zhang Chunqin 07735583500 School 4 Guilin Xinfu Food Co., Ltd. Li Zhihua 13807835346 5 STO Express Guilin Station Xie Xiaogang 18377280779 Public understanding and comments on the Project are included in Table 7-3.

Table 7-3 Statistics of Public Participation Survey (Individuals)

69 Number Questions Answers of % persons Yes 49 51.6 1. Do you have any knowledge of Guilin Lingui District (West) WWTP Upgrading A little 42 44.2 Project? No 4 4.2 Yes 30 31.6 2. Are you satisfied about the quality status of water environment in Lingui Just so so 40 42.1 District, Guilin City? No 25 26.3 Yes 82 86.3 3. Do you think the Project will benefit the improvement of water environment in Not too much 13 13.7 Guilin City? No 0 0 Yes 83 87.4 4. Do you think the Project will benefit the Not too much 12 12.6 overall development Guilin City? No 0 0 Noise pollution 63 66.3 5. What do you think will bring the most Air pollution 27 28.4 significant impact(s) on the environment Water pollution 11 11.6 in the construction process of the Project? (multiple choices allowed) Solid waste pollution 31 32.6 None 8 8.4 Noise pollution 62 65.3

Air pollution 30 31.6 6. In which aspect(s) do you think greater Water pollution 11 11.6 efforts should be made in environmental protection in the construction process of Solid waste pollution 33 34.7 the Project (multiple choices allowed)? Water and soil 13 13.7 conservation None 9 9.5 Positive impacts 72 75.8 7. What impacts do you think the Project No impacts 23 24.2 will bring to your life after it is completed? Negative impacts 0 0 Supportive 87 91.6 8. What is your general attitude toward I don’t care 8 8.4 the construction of the Project? Objection 0 0

Table 7-4 Statistics of Public Participation Survey (Groups)

Number Questions Answers of % groups

70 Number Questions Answers of % groups Yes 5 100 1. Do you have any knowledge of Guilin Lingui District (West) WWTP Upgrading A little 0 0 Project? No 0 0 Yes 3 60 2. Are you satisfied about the quality status of water environment in Lingui Just so so 2 40 District, Guilin City? No 0 0 Yes 5 100 3. Do you think the Project will benefit the improvement of water environment in Not too much 0 0 Guilin City? No 0 0 Yes 5 100 4. Do you think the Project will benefit the Not too much 0 0 overall development Guilin City? No 0 0 Noise pollution 5 100 5. What do you think will bring the most Air pollution 3 60 significant impact(s) on the environment Water pollution 1 20 in the construction process of the Project? (multiple choices allowed) Solid waste pollution 0 0 None 0 0 Noise pollution 4 80

Air pollution 1 20 6. In which aspect(s) do you think greater Water pollution 1 20 efforts should be made in environmental protection in the construction process of Solid waste pollution 1 20 the Project (multiple choices allowed)? Water and soil 1 20 conservation None 0 0 Positive impacts 5 100 7. What impacts do you think the Project No impacts 0 0 will bring to your life after it is completed? Negative impacts 0 0 Supportive 5 100 8. What is your general attitude toward I don’t care 0 0 the construction of the Project? Objection 0 0

According to the statistical results of public survey (individuals): 95.8% of the participants have learned about the construction of the Project and 86.3% of them think that the construction of the Project will be helpful to the improvement of the water environment of Guilin City. 87.4% of the participants think that the construction of the Project will benefit the overall development of Guilin City.

71 66.3% of the participants think that noise pollution generates the most significant environmental impacts in the construction process of the Project, 28.4% chose air pollution and 11.6% chose water pollution and 32.6% chose solid waste pollution. 65.3%, 31.6%, 11.6%, 34.7% and 13.7% of the participants of the public survey think that stronger efforts should be made in prevention and control of noise pollution, air pollution, water pollution and solid waste pollution and soil erosion in the construction process. 75.8% of the participants think that the construction of the Project will be beneficial to their life and 91.6% of the participants are supportive to the construction of the Project while the remaining 8.4% expressed that they don’t care. None of the participants show objections to the construction of the Project. According to the statistical results of public survey (groups): 100% of the participating groups have learned about the construction of the Project and think that the Project will be helpful to the improvement of the water environment in Guilin and beneficial to the overall development of Guilin City. The participants are more oconcerned about the noise, air and water pollution in the construction process and think that stronger measures of environmental protection should be taken over noise pollution, air pollution, water pollution and solid waste pollution and soil erosion in the construction stage. 100% of the participating groups support the construction of the Project. During the public participation survey in Towngas China (Guilin) Co., Ltd., the company put forward the following opinions and suggestions on the risk prevention measures for this project. Gas concentration alarm devices should be installed in the fuel gas equipment used in the Project so that gas supply is automatically cut off by the alarm system in the event of any gas leakage. The gas pipeline should be installed in accordance with with the gas safety regulations and the gas pipelines and gas devices shall not be put into service until accepted by professional units. Excellent ventilation should be maintained in the equipment rooms and any leakage incidents should be immediately reported to the gas company for proper handling. The gas company shall trigger the emergency response plan for emergency repair. The EA will actively accept the proposal made by Towngas China (Guilin) Co., Ltd., and design the gas pipeline direction in the design stage according to the gas safety regulations. In the meanwhile, the locations of the workshops and safety and emergency response equipment will be designed according to the respective specifications; In the construction period and the operation period, the operations will be carried out strictly in accordance with the gas company's recommendations and the workshops shall be well ventilated and managed by special personnel. Before the Project is completed and put into operation, technicians of Towngas China (Guilin) Co., Ltd. will be invited to provide training to WWTP staff in the plant area before such employees are allow to take the posts. Periodical training and rehearsals on emergency responses to natural gas leakage incidents will be conducted every year. In the public participation survey at Lingui District Wastewater Treatment Plant, the head of the WWTP suggests that it should be specified in the contract documents that the construction camps shall be set up by the construction contractors on their own since the WWTP site has no land space to accommodate such camps. At the same time, the construction contractors should be aware that the construction activities shall be carried out in the designated construction and transportation areas and the construction workers shall obey the dispatch and command within the plant area to avoid impacts on the normal operation of the WWTP. The head of the WWTP also

72 introduced that the new structures to be added should be tested and debugged before connected with the existing pipelines to shorten the connection time. The short-term connection will not affect the normal operation of the WWTP. The Project Employer will actively accept the recommendations made by the head of Lingui District WWTP and will incorporate such recommendations into the bidding and contract documents to regulate the construction activities of the construction contractors.

73 9. Environmental Management Plan 9.1 Purposes of Environmental Management Plan An environmental management plan aims to propose appropriate mitigation measures for all potential environmental impacts, especially negative impacts, identified and analyzed in the environmental impact assessment stage of the Project, and to propose an environmental management system to ensure that these measures are implemented and the environmental prorection responsibilities and duties of all parties involved in the Project are fulfilled. In addition, a training plan and an environmental monitoring plan are proposed to strengthen the capability of the Project in implementing the environmental management plan and reviewing the project implementation effect. 9.2 Environment Management Agencies and Their Responsibilities

9.2.1 Environment Management Agency Since the construction period and the operation period of the Project involve different contents of environmental management and the working time limits in both periods are different in terms of duration, with the former being short and the latter long, different organizations should be set up based on the different working stages of the construction contractor and the operator, with each organization responsible for different stages. At the end of the construction period, the corresponding management organization will be revoked, and the management organization of the operation period will begin to operate. World Bank EIA PMO

EPB

Guilin Drainage

Co., Ltd. External Monitoring agency Contractor Construction Supervision Engineer

Supervisory Management Consulting agency Agency agency

Project Owner Implementatio n Agency

Figure 9.2-1 Schematic Diagram of the Environment Management Agencies in the Construction Stage of the Project

PMO World Bank

Consultant

External EPB Operator Monitoring agency

Supervisory Management agency Agency

Operating Monitoring Agency agency

Figure 9.2-2: Schematic Diagram of Environment Management Agencies in the Operation Stage of the Project

9.2.2 Responsibilities and contents of environmental management Table 8-1 shows the contents and staffing of each environment management agency for environment management work in different stages. Table 8-1 List of Environment Management Agencies Project Stage Key Contents of Environment Management Staffing stakeholders Contacting and coordinating with the competent government PMO department of environment management for implementation of the 2 environment management matters; 1. Responsible for a series of environmental protection management work in the design and preparation stage of the Project; Project Owner 2. Securing the fund needed for the environmental protection (Guilin Municipal work; 2 Drainage Co., 3. Responsible for coordinating with the competent government Ltd.) department of environment management for implementation of the Design and environment management matters; preparation 4. Recruiting supervision engineer and collecting records. 1. Incorporating the environmental protection measures into the design program and budget; Designer 3 2. Incorporating the ESMP mitigation measures into the technical specifications of the bidding documents. 1. Providing technical support to the environmental protection work included in the project design; EIA consultant 4 2. Preparing the EIA documents of the Project; 3. Development ESMP. Local EPB 1. Responsible for review and approval of EIA Report of the 2

75 Table 8-1 List of Environment Management Agencies Project Stage Key Contents of Environment Management Staffing stakeholders Project; 2. Providing guidance to the urban and county EPBs on proper implementation of the routine environment supervision and management work of the Project. 1. Responsible for a series of environmental protection management work in the construction stage of the Project and securing the fund needed for the environmental protection work; 2. Managing and supervising the environmental protection work in the construction stage and investigating into and handling

problems of public disturbance or pollution arising in the Project Owner construction process; (Guilin Municipal 3. Responsible for coordinating with the competent government 3 Drainage Co., department of environment protection for implementation of the Ltd.) environment management matters; 4. Following up with the execution status of the ESMP and reporting on a periodical basis to the competent government department of the same level, the provincial PMO and the World Bank ; 5. Accepting and handing public complaints.

1. Implementing the environmental protection measures and the

various activities in the construction stage based on the bidding

documents, the construction contract and this ESMP;

2. Accepting guidance and supervision by the environment management personnel of the Project Owner, the construction supervision engineer and the related government departments; Contractor 3. Accepting technical supports provided by the environmental 3 protection consulting agency; 4. Implementing safety protection measures, e.g. erecting signs and fences on the boundary of construction sites, setting up channels of public communication and assuring construction safety; 5. Executing the ESMP. 1. Supervising the contractor’s execution of the ESMP and Construction carrying out the environment mitigation measures in the stage construction contract; Construction / 2. Carrying out site supervision of the implementation status of the Environment Contractor; assisting the EA in carrying out the environment 3 Supervision management work; Engineer 3. Keeping records of and developing and submitting to the Project Owner on a periodical basis ESMP execution status reports. 1. Supervising and inspecting the environmental protection measures of the Project Owner and the Contractor on a sampling basis; 2. Receiving ESMP execution reports submitted by the Project Owner and the PMO and performing the administration functions

based on such reports; 3. Checking the dust and noise pollution control measures and determining construction time; 4. Checking the discharge of air pollutants; 5. Checking the discharge and disposal of domestic sewage and Local EPB 2 waste engine oil in the construction sites; 6. Checking the three simultaneousness of the environmental protection facilities and determining the deadline of final completion; 7. Checking whether the environmental protection facilities meet the standard requirements; 8. Arranging emergency response actions in the event of any abnormal environmental conditions in the construction process; 9. Accepting and coordinating the handling process of public complaints. Cultural relics Cultural relics discovered in the construction process must be management rescued and protected.

76 Table 8-1 List of Environment Management Agencies Project Stage Key Contents of Environment Management Staffing stakeholders authority 1. Providing technical supports to the environmental protection work in the construction stage of the Project according to the authorization of the Project Owner and this EIA Report as well as External the environmental protection design outcomes; monitoring / Unlimited 2. Providing the contractor with technical guidance on the Consultant environmental protection work and properly carrying out the environmental protection training work in the construction stage of the Project. 1. Responsible for the post-operation management work of environmental protection and implementing the mitigation measures and monitoring of the ESMP in the operation stage; 2. Responsible for contacting and coordinating with the competent government department about the implementation of the Project Owner or environment management matters; 2 Operator 3. Making emergency responses to environmental accidents; 4. Providing periodical staff training to enhance their competence and actively organizing activities for exchange of environmental protection technology and experiences to further improve the management work of environmental protection. 1. Carrying out the environmental monitoring work of the Depending Environmental operation stage of the Project as authorized by the Project Owner on the scope Monitoring and required in the environmental monitoring plan; of authorized Agency 2. Carrying out the routine monitoring activities related to the assignment Project on a periodical basis.

1. Responsible for the final acceptance of the environmental

protection work of the Project; 2. Managing and supervising the status of compliance with the Operation environmental protection standards in the operation stage; stage 3. Carrying out routine supervision and inspection of the operation

status of the built environmental protection facilities. 4. Incorporating conventional pollution sources into the scope of supervision and management; Local EPB 5. Checking the implementation status of the environmental 2 management plan during the operation period; 6. Checking the implementation status of the monitoring plan; 7. Checking whether the environmental quality of the environmentally sensitive sites meets the requirements of the corresponding quality standards; 8. Strengthening supervision to prevent accidents; and formulating emergency response plans in advance so that hazards are eliminated in time in the event of any accidents. Guilin Municipal Guiding, coordinating and supervising the production safety Safety supervision and management work of the project owner and 1 Supervision providing professional guidance to the production safety Bureau supervision and management department of the project owner. Public or Public supervision Not limited organizations

77 9.3 Environmental Impacts and their Mitigation Measures In accordance with the relevant laws and codes of China and in association with the World Bank General Environment, Health and Safety (EHS) Guidelines, EHS Guidelines for Water Supply and Drainage, general and special countermeasures and mitigation measures are proposed for the preparation stage, the construction stage and the operation stage of the Project. For the general countermeasures and mitigation measures, see Table 9-2. For the special environmental mitigation measures, see Table 9-3.

Table 9-2 General environmental impact mitigation measures of the Project

Estimated investment of Implemented Supervised Stage Activity Impact Mitigation measures environmental by by protection (CNY10000) 1. The environmental management plan shall be incorporated into the detailed design and the environmental protection measures into the technical specifications of the tender documents to ensure that the environmental management plan is effectively implemented; 2. The contractors and construction supervision engineers shall be required to take part in training on environmental protection and environmental management plans before construction; 3. The aforesaid environmental impact mitigation measures during the construction period shall be included in the contractor's bid documents and finally in the construction contract as a contractual requirement for the project contractor. Guilin Tendering 4. The contractors shall be required to monitor its environmental Municipal Guilin

Design and bidding activities in accordance with the monitoring plan. The PMO and the Drainage Co., Municipal / 0 stage and contract construction supervision teams shall supervise and review such Ltd. and its Drainage management records. tendering Co., Ltd. 5. The contractor shall provide each subproject with at least 1 full- agency time environmental personnel. These environmental workers shall be trained about the training programs to be competent for their work. 6. In the construction process, the contractors shall communicate and negotiate with the local people in the project area, and erect a bulletin board in each construction unit to inform the public of the specific construction activities and construction time. In addition, the contact information including name and telephone number of the contact person shall also be provided to allow the public to complain and provide advices on the construction activities.

1. Stronger management efforts shall be made for the sake of proper To be Guilin Constru Water maintenance of construction machinery so as to prevent leakage and incorporated Municipal ction Civil works pollutio 4 spillage. In addition, all types of construction machinery shall be into the Drainage stage n properly covered in rainy days. technical Co., Ltd.,

Estimated investment of Implemented Supervised Stage Activity Impact Mitigation measures environmental by by protection (CNY10000) 2. In order to prevent the environmental impacts generated by the specifications external construction wastewater on surface water, construction wastewater and executed monitoring sedimentation tanks shall be installed in the construction sites of the by the agency, Project. The wastewater generated during the construction process contractor local EPB shall be reused after treatment in the sedimentation tank to ensure that the construction wastewater is not discharged to the outside environment. 3. No construction camps shall be set up and the domestic sewage generated by the construction workers shall be treated in a centralized way in the sewage treatment system of the WWTP. 1. Dust control on construction sites shall be strengthened; Mechanical equipment in service, e.g. transportation vehicles, excavators, etc., shall be maintained with greater inputs; acceptable fuels shall be selected to reduce smoke emitted by the construction machinery. 2. Water shall be sprayed on the working surface where secondary dust may occur. Staff shall be arranged to regularly spray water on the Air construction site to reduce the amount of dust. Exhaust gas pollutio 3. A reasonable time table shall be arranged for the construction emitted from n works so as to shorten the construction period as much as possible, excavation, and reduce the scope and duration of impacts from construction 2 filling and exhaust gas. construction 4. Construction debris, construction wastes, and building materials machinery shall be covered and cleared in time; if temporary storage yards are needed, it shall be necessary to cover the materials easy to generate dust. Cultural If cultural relics are found, the construction works must be stopped & and the site must be protected. In addition, a report shall be submitted physical to the local cultural relics protection department in time and resourc the excavation shall not be resumed until the cultural relics es identification and protection work is finished. Vibration Noise 1. Low-noise equipment and processes shall be selected where 1

Estimated investment of Implemented Supervised Stage Activity Impact Mitigation measures environmental by by protection (CNY10000) generated by possible and equipment maintenance and servicing shall be construction strengthened; machinery 2. A reasonable time table shall be developed for the construction and machinery to reduce the impact of construction noise on protection transportatio targets. n vehicles 3. In the construction process, effective noise and vibration reduction measures shall be taken, such as installing elastic pads, covering, sound insulation covers and other methods. Horning by motor vehicles entering and leaving the construction sites should be banned. 4, A reasonable layout plan shall be developed for the construction sites to avoid the simultaneous operation of multiple large high-noise machinery at the same time on the same construction site. High-noise mechanical equipment shall be located as far as possible on the far side of the construction site from the residential area. 5. Operations at noon and night are prohibited. If it is necessary to continue construction at night, a supporting document shall be produced by the construction administrative department, approval shall be obtained from the environmental protection authority, and an announcement made to local residents.

1. Construction debris generated from foundation excavation shall be transported to and stockpiled at sites designated by the relevant authorities; 2. Construction wastes and debris transportation vehicles shall be

Solid equipped with a fully-enclosed transport mechanism, driving and Civil works 5 wastes loading recorders and corresponding construction waste sorting transport devices. 3. The domestic garbage generated by the construction workers shall be collected, transported and treated by the sanitation department in a centralized way.

Table 9-3 Specific environmental impact mitigation measures of the Project

Estimated investment of Stag Implemented Supervised Activity Impact Mitigation measures environmental e by by protection (CNY10000)

1. The reserved safety space and direction of natural gas pipelines shall be designed in strict accordance with the relevant safety regulations. 2. Equipment using natural gas shall be installed with natural gas leak

detection devices and shut-off devices. Guilin Tendering and 3. No construction camps shall be set up in the construction areas Municipal Guilin Desig bidding and and the contractors shall rely on social resources to address the need. Drainage Co., Municipal n / 0 contract Ltd. and its Drainage stage 4. The construction contractors shall follow the command in the management tendering Co., Ltd. WWTP when carrying out construction activities in the designated agency construction and transportation areas. 5. The influent and effluent pipelines of the newly added structures shall be tested and commissioned before connected with the existing pipelines to shorten the connection time.

Guilin Municipal To be Drainage Vibration incorporated Co., Ltd., Cons generated by into the environment tructi construction Temporary sound barriers shall be installed on the side close to the technical Noise al engineer 0.5 on machinery and dormitory building of Guilin Fuxin Food Co., Ltd. specifications of the stage transportation and executed construction vehicles by the supervision contractor agency, local EPB

Estimated investment of Stag Implemented Supervised Activity Impact Mitigation measures environmental e by by protection (CNY10000)

1. Ion deodorization shall be adopted for the odor-producing processes; 2. Fully-enclosed deodorization shall be adopted for the various Odor 50 process structures; 3. Fully-enclosed vehicles shall be used for sludge transportation to limit the odorous gases within the vehicles.

1. Low-noise equipment and technologies shall be selected; equipment maintenance and servicing shall be strengthened; and Operation of vibration isolation and control measures shall be taken during the wastewater installation and operation to reduce noise. treatment local EPB, system, 2. Noise absorbing materials and vibration damping devices, such as Guilin Oper public advanced asbestos boards, shock absorbers, etc., shall be arranged in a Municipal ation supervision sludge reasonable way around the inner walls, on the roof and ground of the Drainage Co., stage of local treatment and Noise pump houses and next to the equipment effectively control and Ltd. 8 community sludge eliminate the propagation and reflection of noise. transportation, 3. Flexible connection shall be used between the pump and the etc. pipeline to reduce and block vibration; in addition, elastic cushion shall be provided around pipelines going through the walls. 4. Green belts, trees and shrubs shall be planted around the WWTP; where possible, trees with better pollution resistance shall be planted to improve the landscape and reduce environmental impacts.

1. Sludge shall be transported by special sludge trucks to Shangyao Sludge Sludge Treatment Project for composting. The sludge trucks shall be disposa 10 equipped with GPS real-time positioning devices and shall be fully l enclosed and equipped with a leachate collection system.

Estimated investment of Stag Implemented Supervised Activity Impact Mitigation measures environmental e by by protection (CNY10000) 2, Tests of moisture content and heavy metal content in the sludge shall be conducted once a month.

1. Prior to the completion and operation of the Project, training shall be provided to the WWTP staff by technicians of Towngas China (Guilin) Co., Ltd. to make sure that the employees of the WWTP shall Guilin be trained before assigned to a certain post. Guilin Natural Municipal Natural gas Municipal gas 2. The operations shall be carried out in accordance with the Safety 4 risks Drainage Co., leakage standards and the workshops shall be well ventilated and managed Supervision Ltd. by special personnel. Bureau 3. Emergency response training and rehearsal on natural gas leaks shall be carried out periodically every year.

1. Appropriate protective clothing, gloves, respiratory masks shall be provided for the staff and non-slip shoes for transport workers. Hard-soled shoes shall be provided for all workers to avoid foot injury. Noise protection devices shall be provided for staff working near high- Guilin noise equipment. Safety helmets shall be provided for staff working Municipal Staff near heavy-duty mobile equipment, excavators, cranes and Health health Guilin transportation trucks. Bureau, All production hazards Municipal Difficult to Guilin processes and 2. Design and material specifications for reducing hazardous Drainage Co., estimate Municipal potentia contacts shall be developed in the design stage (e.g. ventilation, air Ltd. Safety l risks conditioning, enclosed conveyor belt, low-load and classification height, anti-skid floor, staircase and corridor safety handrails, splash Supervision protection and leakage prevention, noise control, dust prevention Bureau measures , gas alarm systems, fire alarm and control systems, and evacuation facilities, etc.). 3. Appropriate personal facilities shall be provided for the staff,

Estimated investment of Stag Implemented Supervised Activity Impact Mitigation measures environmental e by by protection (CNY10000) including cleaning and dressing areas, etc.; 4. Eat, smoking and drinking outside the designated areas are prohibited; 5. In the event of cuts and abrasions, medical treatment shall be provided immediately and the wounds shall be properly banded.

9.4 Environmental Monitoring Plan 9.4.1 Objectives of environmental monitoring Environmental monitoring covers the construction stage and the operation stage of the Project and aims to acquire full and timely information on the pollution conditions of the proposed project, the degree of changes made and scope of impacts brought by the project construction to and on the environment quality of the project area as well as the status of environmental quality in the operation stage so as to give timely feedbacks to the competent authority and provide a scientific basis for the environment management work of the Project. If significant impacts are generated by the Project on the local environment in its construction or operation period, reasonable environmental monitoring can enable the contractor or the operator to discover the problems and take corresponding actions in time. 9.4.2 Environment Monitoring Agency Environmental monitoring in the construction stage and the operation stage is undertaken by a qualified monitoring agency entrusted by and on behalf of the project contractor or operator. The undertaking agency should be certified in the national environmental quality certification program, have complete equipment and strong technical competence and are able to carry out the respective environmental monitoring task in a satisfactory manner. Sensitive and concerned spots that probably involve significant pollution as shown in the prediction results of environment impacts are chosen as the monitoring spots to follow up with the pollution status of the monitored items in the construction stage and the operation stage. Noise, ambient air and surface water that involve significant environmental impacts are chosen as the monitoring contents. The monitoring factors are determined based on the pollution characteristic factors of the Project. The monitoring and analysis method for the respective items specified in the Technical Specifications on Environmental Monitoring promulgated by MoEP is chosen and the national standards confirmed in the EIA of each subproject are adopted as the assessment standard. 9.4.3 Environmental Monitoring Plan and Budget The detailed environment monitoring plan and budget of the Project are described in Table 9-5.

Table 9-5 Environment Monitoring Plan and Budget

Monitori Cost per Monitoring Total cost Applicable standards and Period ng Monitoring site Monitoring frequency monitoring Client item (CNY10000) specifications object (CNY)

Upwind and downwind boundary of the ， 2 periods / year 2 days 1200 0.48 project site / period，once / day; Constructio Class II standard specified in Ambient monitoring must be TSP conducted at the n Ambient Air Quality Standard air Dormitory building of Guilin Fuxin Food Co, aforesaid frequency contractor (GB3095-2012) 600 0.24 Ltd throughout the construction period.

Construction periodConstruction

As the project is located in Lingui District WWTP and the construction wastewater is treated and reused for dust removal at the project site while the domestic Surface sewage generated by the construction workers is discharged after treated by the existing WWTP, no adverse impacts will be generated on the environment and, water therefore, surface water monitoring in the construction period is omitted.

East, south, west and north boundaries of ， 2 periods / year 2 days 960 0.39 the Project / period，twice / day (day and Class 2 and 4a standard night);monitoring must Constructio specified in Environmental Noise dB(A) be conducted at the n Quality Standards for Noise Dormitory building of Guilin Fuxin Food Co, aforesaid frequency contractor 240 0.1 (GB3096-2008) Ltd throughout the construction period.

4 periods / year，1 day / Discharge Standard of Operation period Operation Exhaust H2S, NH3, odor Real-time monitoring on the upwind and ， CNY Project period 4 times / day; 5280 Pollutants for Municipal gas concentration downwind boundaries of the Project 22000/year owner until project account WWTPs (GB18918-2002) closure

500m upstream of the discharge outlet of CNY COD, 4 periods / year，2 days 1000 4000/year Class IV in Environment Surface BOD5,SS, the Project / period，once / day; Project

Quality Standards for Surface water petroleum, owner until project account Water (GB3838-2002) NH3-N, TP 500m downstream of the discharge outlet of closure 1000 CNY

Monitori Cost per Monitoring Total cost Applicable standards and Period ng Monitoring site Monitoring frequency monitoring Client item (CNY10000) specifications object (CNY)

the Project 4000/year

2500m downstream of the discharge outlet CNY 1000 of the Project 4000/year

， COD, 4 periods / year 2 days Class 1A specified in the Wastewa BOD5,SS, ， CNY Discharge Standard of At the discharge outlet of the Project / period once / day; 1000 ter petroleum, until project account 4000/year Pollutants for Municipal NH3-N, TP closure WWTPs (GB18918-2002)

4 periods / year，2 days Class 2 standard in Emission Plant East, south, west and north boundaries of ， CY Project Standard for Industrial boundary dB(A) / period twice / day 960 the Project 3900/year owner Enterprises Noise at noise (day and night); until project account closure Boundary (GB12348-2008)

Moisture Screening value for Class content, total II land use specified in mercury, total Heavy Table 1 of “Soil arsenic, total 4 periods / year，1 day / metal CNY Project Environment Quality: Risk chrome, total Project sludge ， 6000 content period once / day; until 24000/year owner Control Standard for Soil lead, total in sludge project account closure Pollution in Construction copper, total Land (Trial) zinc and total (GB36600-2018) nickel

9.4.4 Risk source management Certain risks exist in the daily use of fuel gas. Improper management of fuel gas may cause fires and explosions among other accidents. Therefore, gas leak detection and alarm devices shall be installed during the process of gas connection and, at the same time, a special personnel shall be arranged to manage gas access valve, gas pipelines and boilers in the plant site. The technical personnel of the gas company shall provide technical guidance and safety training to the WWTP employees to enable them to become familiar with the characteristics of gas used in the WWTP, improve the risk prevention and control awareness and emergency response capabilities of fires and explosion accidents, and implement the policy of safety first, prevention first, and comprehensive management. 9.5 Monitoring training plan 9.5.1 Capacity Development and Training The key objects of environmental capacity development are the environment managers and construction supervision engineers, training for whom is one of the key component of technical supports under the Project. In order to assure smooth and effective implementation of the ESMP, it is necessary to provide training on ESMP and other relevant knowledge and skills to the staff of the Project Owner / EA, the operator, the contractor, the supervision engineer, the local PMOs and other stakeholders and also provide different training to staff on different job positions. 9.5.2 Training plan and contents It is necessary to provide training on environmental management to project construction and operation staff in order to reduce impacts on local environment in the construction and operation processes of the Project. Such training will mainly be provided for the following groups: (1) Environment Managers and Construction Supervision Engineer The training will be organized by the PMO and conducted by the Environment Technology Specialist one year before the implementation of the Project for the full- time environment management personnel of the PMO and the construction supervision engineers. (2) Contractor and Construction Workers The training will be organized by the PMO or the contractors in the project area prior to the implementation of the Project and may be specifically implemented by the Environment Management Specialist or trained full-time environment management staff of the enterprises. (3) Operator The training will be organized by the PMO or the Employer in the project area before the Project is put into operation and may be specifically implemented by the Environment Management Specialist or trained full-time environment management staff of the enterprises. Details of the contents, trainees, time table and estimated budget of the training are shown in Table 9-6.

Table 9-6 Environmental Management Training Plan

Training No. of Total cost Supervision Trainees Duration Training Contents IA stage trainees (*CNY10000) Agency 1. Simple monitoring methods and control measures (self-test) for noise and wastewater during construction Full-time environment period. management 2. Relevant measures and personnel, full-time requirements of the environmental 3 management plan; environmental environment management protection regulations, construction planning, supervision rules, coordinator occupational health and safety measures and precautions related to construction activities. 1. Measures included in the PMO and its Construction environmental management plan for the World Bank 3 days operation period as well as the operation 1.0 environment stage specialist World Bank and maintenance of environmental protection facilities. 2. World Bank project management

procedures, reporting mechanisms;

construction 3. Monitoring standards, tests, 3 methods, sample transfer, data quality supervision engineer control, equipment use, etc. 4. Emergency response measures for environmental risks, etc. 5. Occupational health, hygiene and safety. 6. Ambient air monitoring and control technology, noise monitoring and control technology.

Training No. of Total cost Supervision Trainees Duration Training Contents IA stage trainees (*CNY10000) Agency Simple noise monitoring methods and control measures (self-test), PMO and its 2 occupational health, hygiene and 2 environment World Bank days/year safety measures for the operation specialist Operation Employer / operation 3 period. stage agency Rules for safety use of gas, PMO and 2 days/ procedures for routine operation and 4 Towngas China World Bank year response measures for emergency (Guilin) Co., Ltd. incidents

Total 7 / /

9.6 Reporting mechanism nd requirements for implementation of the Environmental Management Plan The Contractor, the Operator, the Monitoring Agency, the construction supervision engineer and the PMO shall keep records of project progress, ESMP execution status, environmental monitoring results throughout the implementation of the Project and report in a timely manner to the concerned departments. Monitoring records of the operation status of the solid waste landfills and WWTPs involved in the linked projects and the due diligence study shall also be acquired and collected on a periodical basis. The relevant requirements shall be incorporated into the monitoring plan, which mainly consist of the six aspects as follows: 1) The environmental supervision engineer of the Project shall keep detailed records of the execution status of the ESMP on a monthly basis and submit the monthly report to the Project Owner and the Municipal PMO in a timely manner. The weekly and monthly reports should include information on the execution status of the environmental protection measures, and the progress and data of environmental monitoring and whether the monitoring data complies with the standard and, if not, the reasons. 2) The Contractor and Operator shall keep detailed records of the progress of the Project and the execution status of the ESMP on a quarterly basis and submit the quarterly report to the PMO in a timely manner, with a copy to the Municipal EPB. 3) The Monitoring Agency shall submit the monitoring report to the Contractor (Operator) and the environmental supervision engineer in a timely manner after the monitoring assignment is carried out. 4) The Contractor and the Operator shall submit the Environmental Monitoring Report of the Project to Guilin Municipal EPB and Guilin Municipal PMO in a timely manner. Guilin Municipal PMO shall submit reports on the progress and effectiveness of the execution of the ESMP of the Project to the World Bank. 5) In the event of any specific non-compliances in terms of environmental protection, the construction supervision engineer and the PMO shall submit a report to the local competent authority of environmental protection and to the superior levels if necessary. 6) 1 ESMP Execution Report should be submitted every half a year to the World Bank. The ESMP Execution Report may include the following contents: a. Implementation status of the training program; b. Implementation progress of the Project; c. Execution status of the environmental protection measures of the Project; implementation status and key results of environmental monitoring; d. Information of continuous public participation; public complaints and the records of key contents, solution and public satisfaction of such

92 complaints, if any; e. ESMP Execution Plan for the second half of the year. During the implementation of the project, the project employer shall require the project contractor, the supervision engineer and the environmental monitoring agency to submit reports in a timely manner to the project employer and the local environmental protection bureaus about environmental pollution incidents and actions taken based on the status of implementation of the project in different stages. Under normal circumstances, the construction supervision engineer shall accurately incorporate the contents of the environmental management plan when preparing the monthly construction supervision report. In addition, the environmental supervision engineers of the project employer and the supervision agency shall prepare reports on the execution of the environmental management plan on a half-year basis and submit such reports via the Project Management Office to the World Bank.

93 10. EIA Conclusions and Recommendations

The following conclusions may be drawn from the status quo survey of local environment and comprehensive assessment of the environmental monitoring results:

1. Basic information

Lingui District (West) WWTP with a designed capacity of 3×104m3/d was put into operation in 2008. It adopts the CAST process and follows Class 1B standard for effluent discharge, with the tail water of the WWTP discharged into the Xiaotaiping River and then into Xiangsi River. In order to meet the demand for sewage treatment in Lingui New District, the Lingui District (West) WWTP is upgraded under the Project. The components of the Project include the renewal of the original plant and pump room equipment, upgrading of the (West) WWTP to Class 1A, deodorization in the plant area and pump station and introduction of advanced sludge treatment process.

2. Positive impacts from project implementation The Project aims to improve local water environment and build high-standard and modernized urban infrastructure and public facilities to provide powerful support and assurance to the sustainable economic development of Guilin Municipality and promote the level of sustainable urban development and realize the integration of reform and innovation. According to the environmental quality monitoring results of the Project, the acoustic environment and air environment are in a good quality condition. TP, NH3-N, COD and BOD5 monitored at all sections of the surface water environment exceed the standard, indicating that the water quality of the Xiaotaiping River is polluted to a certain extent. However, after the implementation of this project, the effluent quality of the WWTP will be upgraded to the Class 1A standard of the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002). The reduction of pollutant emissions will effectively improve the surface water environment in Guilin. At the same time, deodorization in the plant area will improve the air quality for the workers in the plant area and the local residents. The advanced treatment of sludge will facilitate later transportation and reduce the odor of the sludge tanks in the plant area, bringing positive environmental and social benefits.

3. Adverse impacts from project implementation

Some adverse impacts are likely to arise from the implementation of the Project on the surrounding environment. Such impacts mainly come from the construction stage, including: soil erosion caused by excavation, dust, exhaust gas and noise and solid wastes generated from transportation of earth and construction material on construction site and access roads. As long as the construction contractors make sure that the various environmental protection measures and actions proposed in this report and the Environmental Impact Assessment Report are enforced, and take

94 actions to strengthen environmental management, satisfy the emission standards for all major pollutants and reduce the impact of pollutants on the surrounding environment to an environmentally acceptable range, the adverse effects will disappear as the construction period comes to an end.

In conclusion, the Project is feasible if the alternatives, mitigation measures, ESMP proposed under the Project are executed.

95 Annex 1

Guangxi Zhuang Autonomous Region

Environmental Protection Bureau

GZAR Environment Management Doc. No. [2002]194

Approval of the Environmental Impact Report of the

Wastewater Management Project of Xicheng District, Guilin

City, GZAR

To: Guilin Xicheng District Tai’an Investment Limited Liability Company

This is to acknowledge that the Environmental Impact Report (EIR) of the Wastewater Management Project of Xicheng District, Guilin City, GZAR prepared by Guilin Municipal Environmental Protection Science Institute under your authorization (attached with the contents of special EIA of water environment) is well received and has been reviewed and commented by Guilin Municipal Environmental Protection Bureau. Here forwarded as follows is the approval of the EIR granted after a special review:

I. The EIR is prepared according to the respective standard format and content requirements and contains relatively comprehensive analysis and focused evaluation using basically feasible methods and reaching explicit evaluation conclusions. The pollution prevention and control measures proposed in the EIR are substantially pertinent and relevant and may be used as the basis for technological optimization, environmental protection design and environment management.

II. The proposed project is located at the foot of Dahuang Mountain in Lingui Town, Lingui County of Guilin City and the circulating activated sludge treatment (CAST) process is initially selected. The Project is designed to achieve a short-term capacity of 30,000m3/d and a mid-term capacity of 60,000m3/d. The project siting complies with the newly published master plan of Xicheng District. Aiming at the centralized treatment and discharge of domestic sewage and industrial wastewater in the county

town of Lingui County, the Project will be helpful to lifting the pressure of water environment protection of Lijiang River and play an outstanding role in promoting the water environment quality in Lingui County. Under the Project, the treatment process will be optimized, effluent concentration will be put under control, operational management will be strengthened and the pollution prevention and control measures and sanitary protection measures proposed in the EIR will be implemented. In such a context, the project siting and construction is therefore approved based on analysis from the perspective of environmental protection.

III. In the construction of the Project, focused efforts shall be made to ensure proper implementation of the following activities:

(1) Xiaotaiping River is the water body directly accepting effluent from the proposed WWTP, with Xiangsi River at its downstream. Results of status quo monitoring of water environment indicate that both rivers satisfy Class IV standard for surface water. Guiling Municipality has determined to change the water quality standard for Xiangsi River (including Xiaotaiping River) from Class III to Class IV. The effluent discharge standard is Class I, unable to meet the water quality control standard of the respective rivers. In order to ensure that the controlled section of Zhoubeitou on Xiaotaiping River meets Class IV standard for surface water, it is necessary to optimize the wastewater treatment process, increase the blowing

capacity and extend the retaining time. The effluent concentration of NH3-N in the low water season (from November to March the next year) should be smaller than 4.5mg/l.

(2) The designed indicator for phosphorus in effluent is not compliant with the standard and further treatment is required. In order to reduce the pressure of phosphorus treatment, it is recommended that the local government and the concerned authorities shall gradually limit the sales until the full ban of phosphorus-containing detergents in the administrative regions and start to promote the phosphorus-free detergents.

(3) A sanitary protection distance of 300m shall be set up from the WWTP and, in particular, environmentally sensitive buildings, such as residential buildings, school houses, shall not be allowed downwind of the WWTP. Sludge shall be removed in a timely manner and transported to the solid waste treatment plants for disposal or reuse after treatment.

(4) The sewage discharge outlets shall be constructed in a standardized way. The

indicators of total sewage discharge, COD, NH3-N shall be distributed by the local authority of environmental protection.

IV. It is suggested that no industrial projects involve large water consumption and drainage should be arranged during the development and construction of Xicheng District. Active efforts should be made to reuse effluent from the WWTP for farmland irrigation or urban greening or landscaping.

V. After the adjustment of the water quality function of Xiangsi River (including

Xiaotaiping River), the Project shall shift its focus onto the proper settlement of the problems of domestic drinking water for people along the river.

VI. Guilin Municipal EPB and Lingui County EPB are required to carry out the environmental protection supervision work in the construction period and operation period of the Project. Upon the completion of the Project, your company shall submit an application to us for acceptance of the environmental protection facilities.

Guangxi Zhuang Autonomous Region Environmental Protection Bureau

July 31, 2002

Keywords: Construction project, EIA, Report, Approval

CC:

GZAR Planning Committee， Guangxi International Engineering Consulting Corporation, Guilin Municipal EPB, Environmental Protection Science Research Institute, Lingui County People’s Government, Lingui County EPB, Pollution Control Department and Environment Supervision Institute under GZAR EPB

Printed and issued by the General Office of Guangxi Zhuang Autonomous Region Environmental Protection Bureau on July 31, 2002

Annex 2

Guangxi Zhuang Autonomous Region Environmental Protection Department

GZAR Environment Acceptance Doc. No. [2010]64

Approval of the Request for Final Acceptance of

Environmental Protection of the Wastewater Management

Project of Xicheng District, Guilin City, GZAR

To: Lingui County Xinglin Urban Construction, Investment and Development Co., Ltd.

This is to acknowledge that the Request for Final Acceptance of Environmental Protection of the Wastewater Management Project of Xicheng District, Guilin City, GZAR and the Monitoring Results of the Final Acceptance of Environmental Protection for the same project and the relevant documents are well received. Authorized by us, Guilin Municipal Environmental Protection Bureau has established a final acceptance group to implement the on-site inspection for the final acceptance of environmental protection, with comments produced. The Project has carried out the relevant corrections according to the requirements in the “Notice of Postponing the Review and Approval of the Request for Final Acceptance of Environmental Protection of the Wastewater Management Project of Xicheng District, Guilin City, GZAR (GZAR Environmental Management Letter No. [2010]201). Here forwarded as follows is the approval of the Request granted after a special review:

I. Project overview

The proposed project is located at the foot of Dahuang Mountain in Shanzao Village inside Yangtang Industrial Park in Lingui County of Guilin City and mainly consists of the WWTP and the sewage collection system (with a sewage pipeline network with a length of approximately 60km and 2 sewage lifting pump stations). The WWTP has a designed capacity of 30,000m3/d. The WWTP subproject mainly comprises of the grille, the sand sedimentation tank, the sewage treatment tank, the effluent

disinfection workshop, the sludge dewatering room, the power supply system and the automated control system. The Project will involve a total investment of CNY 130 million.

II. It is indicated in the “Monitoring Results of Final Acceptance of Environmental Protection of the Wastewater Management Project of Xicheng District, Guilin City of GZAR” (Municipal Environment Monitoring (Testing) Doc. No. [2010]14 that:

(1) Wastewater

CAST technology is adopted in the Project and the effluent is disinfected with chlorine dioxide and then discharged via the general sewage discharge outlet into

Xiaotaiping River. Online COD, NH3-N and flow monitoring devices are installed at the effluent discharge outlet in the Project.

Monitoring results indicate that all the 18 water quality indicators monitored at the

general discharge outlet in the Project, including pH, SS, COD, BOD5, petroleum,

NH3-N, TP, animal and plant oil, hexavalent chromium, total cadmium, total lead, total chromium, total arsenic, total mercury, anionic surfactant, chroma, total nitrogen, and fecal coliform, are compliant with Class 1B standards specified in the Pollutant Discharge Standards for Municipal WWTPs (GB18918-2002).

(2) Odor

Odor in the Project is mainly generated in the processes of grid, sedimentation tanks and sludge dewatering equipment rooms and will be emitted in an unorganized way.

Monitoring results indicate that all the air pollutants on the boundary of the project WWTP, including ammonia, hydrogen sulfide, odor concentration, are compliant with Class 2 standard limits specified in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002).

(3) Noise

The monitoring results of noise on the boundary of the project WWTP indicate that the monitoring results of noise level at all the other monitoring sites except the one on the east boundary are compliant with Class 2 standard limits specified in the Emission Standard for Industrial Enterprises Noise at Boundary (GB12348-2008). As there are no environmentally sensitive sites around the east boundary, no significant noise impacts will be generated on the external environment.

(4) Solid wastes

Under the Project, sludge thickening and dewatering workshops will be constructed and approximately 5 tons of sludge will be generated each day (after dewatering and treatment). The moisture content of the dewatered sludge monitored during the final acceptance period is 79.4% and the dewatered sludge will be landfilled.

The monitoring results indicate that the content of pollutants in the treated sludge of the Project is compliant with the control and standard limits specified in Table 6 in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002).

(5) Surface water

The monitoring results indicate that the water quality of Xiaotaiping River accepting tail water from the project WWTP is better than Class IV standard specified in the Environmental Quality Standards for Surface Water (GB3838-2002). (The water quality standard specified for the environmental function of the river is Class IV.)

(6) Others

The public consultation survey indicates that most of the respondents support the construction of the Project.

III. The pollution prevention and control measures of the Project have met the requirements included in the EIR and its approval and satisfied the conditions for final acceptance of environmental protection. Therefore, from the perspective of environmental protection, we hereby grant approval of the Request for Final Acceptance of Environmental Protection of the Wastewater Management Project of Xicheng District, Guilin City, GZAR and give consent to the formal operation of the Project.

IV. Required Corrections

(1) Stronger efforts should be made in the maintenance of wastewater treatment facilities and environment management to ensure that the effluent quality stably meets the requirement of compliant discharge. Online monitoring devices, such as flow meters, shall be added at the inlets.

(2) Further improvements should be made to the emergency response facilities; the environmental emergency response plans should be implemented; periodical emergency response rehearsal and training should be organized. The various operational records and management system should be improved and perfected.

(3) A qualified organization should be authorized to provide periodical monitoring of water quality in Xiaotaiping River, with the monitoring results filed at the local EPB.

V. The EPBs of Guilin City and Lingui County are responsible for supervising and managing the correction activities.

GZAR Environmental Protection Department

July 27, 2010

Keywords: Environmental protection, municipal construction project, final

acceptance, approval

CC:

GZAR Wastewater and Solid Waste Treatment Promotion Office, Guilin Municipal EPB, Environmental Supervision Team, Lingui County People’s Government, Lingui County EPB, Guilin Municipal Drainage Co., Ltd.

Printed and issued by the General Office of Guangxi Zhuang Autonomous Region Environmental Protection Department on July 27, 2010

Annex 3

Guilin Municipality Lingui District Environmental Protection Bureau

Lingui Environment Management Doc. No. [2017]6

Approval of the Environmental Impact Report of Lingui District

(West) Wastewater Treatment Plant Upgrading and Renovation

Project

To: Guilin Municipal Drainage Co., Ltd.

This is to acknowledge that the Environmental Impact Report of Guilin Municipality Lingui District (West) Wastewater Treatment Plant Upgrading & Renovation Project that your company submitted (hereinafter briefed as the EIR) is well received. Here forwarded as follows is the approval of the EIR granted after a special review:

I. The EIR is substantially compliant with the relevant national specifications of environmental impact assessment. With clear description of the Project, accurate evaluation standard, relatively comprehensive contents of environmental impact analysis, appropriate objects of environmental protection and pollution prevention and control measures with certain feasibility and pertinence, explicit conclusions on environmental feasibility and substantially credible EIA results, this EIR may be used as the main basis for pollution control and environmental management in the Project.

II. The proposed Guilin Municipality Lingui District (West) WWTP is located at the foot of Dahuang Mountain in Lingui Town and involves a land occupation area of 3200m2.

Information of the Project before upgrading: Formerly Lingui Xicheng Wastewater Treatment Plant built in August 2005 and completed and put into operation in December 2008, Lingui District (West) WWTP adopts the CAST process and has a treatment capacity of 30,000 m3/d to achieve effluent quality standard of Class 1B specified in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918- 2002). It was decommissioned in October 2014 and resumed production in July 2016. The existing key structures are the CAST process facilities including the influent pump station, fine grid and swirling grit chamber as a part of the CAST tank, the CAST biological tank, blower house, sludge thickening and dewatering workshop

and the power transformer and distribution cabinet, etc.

Overview of the technical renovation project:

(1) Main construction components:

It is proposed to upgrade and renovate Lingui District (West) WWTP under this Project and promote the effluent quality from Class 1B in the past to Class 1A, with the treatment capacity of 3x104m3/d remaining unchanged. In addition, deodorization will be implemented for the plant area and the pump station and some equipment will be replaced, with advanced sludge treatment system added.

(2) Main additional components

Lifting pump station, submersible pumps, folded plate flocculation inclined tube sedimentation tank, deep-bed fiber bundle filter tank, UV disinfection channel, Pasteur gauge, online monitoring, and chemical phosphorus removal dosing room and automated control equipment.

The project involves a total investment of CNY 81,647,300, including CNY 47,974,200 for environmental protection accounting for a percentage of 58.76% in the total investment.

With the environmental protection measures proposed in the EIR fully implemented, the Project will mitigate and control the adverse environmental impacts to a certain degree and the impacts on the environmental protection targets will be controlled within the national environmental protection standards. Therefore, we agree that the project be constructed according to the project nature, capacity, location and environmental protection measures included in the EIR and also the following requirements.

III. In the construction of the Project, focused efforts shall be made to ensure proper implementation of the following environmental protection activities:

(1) Separate discharge of rainwater and sewage must be realized in the Project. The construction wastewater produced in the construction period shall be settled and treated and then used for dust suppression on the construction sites instead of directly discharged into the environment; the domestic sewage shall be treated in septic tanks and then reused for farmland irrigation instead of directly discharged into the water bodies.

(2) Domestic sewage generated by the construction workers in the construction period shall be treated in septic tanks before discharged into the wastewater treatment system in the WWTP.

(3) The main source of noise in the construction period is noise generated in the operation of the various mechanical equipment on site and by vehicles entering and leaving the construction sites. In order to reduce noise impacts on the surrounding sensitive sites and environment, the construction contractors shall use low-noise equipment and make reasonable arrangement of construction

activities and sites to avoid night construction where possible and have construction plants at fixed construction sites located on the far side of the residential areas in addition to appropriate enclosure and insulation measures.

(4) Solid wastes in the construction period of the Project mainly comprise of construction wastes and domestic garbage generated by construction workers. Due to the small quantity of construction works, the volume of construction wastes to be generated is relatively small and such wastes will be sent to and stockpiled at sites designated by the municipal administration authorities. The small volume of domestic garbage generated in the construction process by the construction workers shall be collected and transported by the environmental protection authority in a centralized way to the domestic garbage landfill for treatment.

(5) Where mechanical equipment is used in the construction process, the construction contractors shall fulfill the formalities of pollutant discharge declaration and registration at Lingui District EPB within 15 days prior to the commencement of the construction works. Before the construction works of the Project is commenced, the EA shall fulfill the formalities of project commencement registration at Lingui District Environment Supervision Brigade.

(6) It is proposed in the Project that the coarse grid room, the influent pump station, the sludge thickening workshop, the advanced sludge treatment workshop and the biological tanks will be subject to enclosed treatment in the operation period and odor produced in the operation of the equipment will be collected and delivered to the activated oxygen ion deodorization equipment for treatment to satisfy the Odor Pollutant Discharge Standard (GB14554-93) before emission.

(7) After the WWTP upgrading and improvement works are completed and put into operation in the operation period, the effluent shall not be discharged into Xiaotaiping River until its water quality complies with Class 1A standard specified in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002).

(8) Noise sources in the operation period mainly include the various wastewater pumps, sludge pumps, blower houses, etc. Low-noise equipment must be selected and noise insulation, silencing and absorption measures must be taken and a reasonable layout plan must be developed to make sure that the noises on the boundaries of the WWTP meets the Emission Standard for Industrial Enterprises Noise at Boundary (GB12348-2008).

(9) Residual sludge from the advanced sludge treatment workshops to be added in the Project in the operation period shall be delivered to Shangyao Sludge Disposal Center for treatment. In the process of transportation, spillage of sludge leachate and odor impacts must be avoided. The WWTP shall use fully-enclosed special trucks to prevent leakage and dispersion of water and sludge. The transportation time shall be strictly controlled to best avoid rush hours.

(10) The air environment protection distance of the upgraded WWTP is 100m, within

which no new residential areas, schools, hospitals and other environmentally sensitive sites shall be planned and constructed.

(11) The various noise control measures included in the EIR shall be enforced. The construction contractors shall strictly follow the respective provisions in the Law of the People’s Republic of China on Prevention and Control of Environmental Noise and ban any construction activities generating noise pollution in the lunch hours of 12:00 to 14:30 and the night hours of 22:00 to 6:00. Where continuous construction is needed for special reasons, a report shall be submitted to Lingui District EPB and no construction activities shall be conducted until consent is obtained. Noise of building construction shall follow the requirements in the Emission Standard for Environmental Noise on the Boundary of Construction Sites (GB12523-90).

(12) The Project must be constructed according to the technical specifications and the environmental risk prevention measures and emergency response plans shall be developed and implemented properly. Double circuit design or special line design shall be adopted for the power supply line and standby power (standby power generator) shall be prepared. In the event of any environmental pollution accidents, immediate actions shall be taken to mitigate pollution and a timely report shall be submitted to Lingui District EPB.

V. In the event that a project is still not commenced for more than 5 years as of the date of issuance of this approval document, the EIA documents of the respective project shall be re-submitted to us for review and approval. In the event of significant changes to the nature, scale, location, production technology or measures for prevention and control of pollution and ecological damages of a project, the EIA documents of the respective project shall be re-submitted for approval.

Guilin Municipality Lingui District Environmental Protection Bureau

March 27, 2017

Printed and issued by the General Office of Guilin Municipality Lingui District Environmental Protection Bureau on March 27, 2017

Annex 4

Guilin Municipal Environmental Protection Bureau

Municipal Environment Management Doc. No. [2014]16

Approval by Guilin Municipal Environmental Protection

Bureau of the Environmental Impact Report of the Upgrading,

Improvement and Modification Project of Lingui New District

Wastewater Treatment Plant

To: Guilin Municipal Drainage Co., Ltd.

This is to acknowledge that the Environmental Impact Report of the Upgrading, Improvement and Modification Project of Lingui New District Wastewater Treatment Plant that your company submitted (hereinafter briefed as the EIR) is well received. Here forwarded as follows is the approval of the EIR granted after a special review:

I. As a technical renovation project, the Project is located in the plant area of Lingui New District WWTP and the construction components include: enclosed deodorization of 2 existing biochemical tanks and purchase of deodorization equipment. The other supporting facilities of the Project will be constructed according to the original scope and the treatment capacity of the WWTP will remain unchanged. The Project involves a total investment of CNY 6,554,900, including CNY 5,954,900 as investment of environmental protection.

With the environmental protection measures proposed in the EIR and in this approval document fully implemented, the Project will mitigate and control the adverse impacts on the regional environment to an acceptable degree. Therefore, we agree that the project be constructed according to the project nature, capacity, location and environmental protection measures included in the EIR and also the following requirements.

II. In the construction of the Project, focused efforts shall be made to ensure proper implementation of the following environmental protection activities:

(1) The following wastewater management measures shall be enforced.

The effluent of the WWTP shall satisfy the Class 1A water quality standard specified in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002).

(2) The following air pollution control measures shall be enforced. In the Project, the biochemical tank will be subject to enclosed deodorization and the odor will be collected and delivered to the activated oxygen ion deodorization equipment and treated to satisfy the Emission Standards for Odor Pollutants (GB14554-94) before discharge. The air pollutant concentration on the plant boundary shall satisfy Class 2 standard for allowable emission concentration of air pollutants specified in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918- 2002).

(3) Low-noise equipment shall be selected with priority and high-noise equipment shall be reasonably arranged and shock-absorbing and noise insulation measures shall be taken. Stronger efforts shall be made in the greening in the plant area. Noise on the plant boundaries shall satisfy Class 2 standard specified in the Emission Standard for Industrial Enterprises Noise at Boundary (GB12348-2008).

(4) Solid wastes of all types shall be subject to reasonable disposal. Solid wastes shall be handled in accordance with the requirements in the EIR. Thickened and dewatered sludge shall be delivered in special enclosed trucks to Guilin Sludge Treatment Center for disposal; grid residues, sediments and domestic garbage shall be removed on a periodical basis by the public sanitation authorities.

(5) The various seepage control measures shall be implemented according to the characteristics of different zones. Dynamic water quality monitoring shall be conducted periodically at water quality monitoring and control sites identified in and around the plant area for ground water and surface water to enable proper early warning and forecast of ground water and surface water pollution.

(6) Emergency response plans shall be developed, emergency response resources shall be prepared and environmental risk prevention measures implemented and emergency rehearsals conducted periodically in accordance with the relevant requirements in the Notice of the Ministry of Environmental Protection on Printing and Issuing the Interim Methods for Management of Emergency Response Plans for Sudden Environmental Incidents (MoEP Circular No. [2010]113).

(7) The ecological and environmental impact monitoring plans for the construction period and the operation period shall be implemented and, in the event of any problems, effective measures shall be taken immediately and a report shall be submitted to the local authority of environmental protection administration.

(8) Active efforts shall be made in the public participation activities in the Project to solve environmental problems raised by the public in a timely manner, adopt reasonable public opinions and satisfy reasonable public appeals on environmental issues.

III. After the Project is implemented, the hygienic protection distance of Lingui New District WWTP from wastewater treatment structures generating odor will be 100m,

within which no new residential areas, schools, hospitals and other environmentally sensitive sites shall be planned and constructed.

IV. The executive agency of the project shall abide by the “three simultaneousness” requirements for environmental protection, i.e. the main works shall be designed, constructed and put into service simultaneously with the environmental protection works. Upon the completion of the project, a request shall be submitted to us in accordance with the “Management methods for final acceptance of environmental protection of construction projects” (Order No. 13 issued by the former State Environmental Protection Administration) for trial operation of the environmental protection facilities. Prior to such trial operation, the formalities of pollutant discharge declaration and registration shall be fulfilled at local government departments of environmental protection. Within 3 months as of the trial operation (and maximum no more than 1 year in case of extension of time), a request shall be submitted to us for final acceptance of environmental protection and the respective documents and monitoring reports shall be submitted at the same time. The project shall not be put into formal operation until after the final acceptance. Any violation of this stipulation shall lead to corresponding legal liabilities.

V. The EA shall, within 20 days as of the receipt of this approval document, deliver the approved EIR to Lingui County EPB and accept supervisory inspection by Lingui County EPB as required.

VI. We hereby authorize Lingui County EPB to carry out supervisory inspection over construction projects as well as routine supervision and management of the execution of the “three simultaneousness” policy of environmental protection in construction projects and require Lingui County EPB to report any problems identified to us in a timely manner.

VII. In the event of significant changes to the nature, scale, location, production technology or measures for prevention and control of pollution and ecological damages of the Project, the EIA documents of the respective project shall be re-submitted for approval. In the event that it is decided that, if the Project is not commenced for more than 5 years as of the date of issuance of this approval document, the EIA documents of the Project shall be re-submitted to us for review and approval.

Guilin Municipal Environmental Protection Bureau

July 4, 2014

Annex 5

Kehan Test Doc. No. 〔2018〕01029-G006 Page 1 of 4

Project Name: Environmental Quality Status Quo Monitoring (Air Quality Test) for Guilin Municipality Lingui District (West) WWTP Upgrading and Improvement Project Client Address: 108 Zhongshan South Road, Guilin Test address: Guilin Municipality Lingui District WWTP and its neighborhood Test type: Entrusted test (monitoring and sampling by the testing company) Test date: January 16 – 19, 2018

1. Basic information 1.1 Test contents

See Table 1 for the test contents. Table 1 S.N and Test factors Test frequency Test date Sampling description of test personnel sites No. 1: Dormitory TSP, PM10, NO2 1 time a day, January 16-17, building of Fuxin and SO2 monitoring of daily 2018 Food Co., Ltd. average value No. 2: upwind of Odor 4 times a day; January 16-18, Luo Zhongbiao the WWTP concentration, hourly values of 2018 Mo Lijuan boundary NH3, H2S NH3 and H2S, 4 Li Junjie No. 3: downwind of instant values for the WWTP odor concentration boundary

1.2 Sample information

See Table 2 to Table 4 for the sample information.

Table 2: Test site No. 1, Dormitory building of Fuxin Food Co., Ltd. Sample No. Test date Test time TSP PM10 NO2 SO2 January 16, 2018 11:00 170709 170710 1801029G11 1801029G11 January 17, 2018 12:00 170712 170711 1801029G12 1801029G12

Kehan Test Doc. No. 〔2018〕01029-G006 Page 2 of 4 Table 3: Test site No. 2, Upwind of the WWTP Boundary Sample No. Test date Test time Odor H2S NH3 concentration 08:00 1801029G12-1 1801029G12-1 1801029G12-1 January 16, 2018 14:00 1801029G12-2 1801029G12-2 1801029G12-2 20:00 1801029G12-3 1801029G12-3 1801029G12-3 02:00 1801029G22-1 1801029G22-1 1801029G22-1 08:00 1801029G22-2 1801029G22-2 1801029G22-2 January 17, 2018 14:00 1801029G22-3 1801029G22-3 1801029G22-3 20:00 1801029G22-4 1801029G22-4 1801029G22-4 January 18, 2018 02:00 1801029G32-1 1801029G32-1 1801029G32-1

Table 4: Test site No. 3, Downwind of the WWTP Boundary Sample No. Test date Test time Odor H2S NH3 concentration 08:00 1801029G13-1 1801029G13-1 1801029G13-1 January 16, 2018 14:00 1801029G13-2 1801029G13-2 1801029G13-2 20:00 1801029G13-3 1801029G13-3 1801029G13-3 02:00 1801029G23-1 1801029G23-1 1801029G23-1 08:00 1801029G23-2 1801029G23-2 1801029G23-2 January 17, 2018 14:00 1801029G23-3 1801029G23-3 1801029G23-3 20:00 1801029G23-4 1801029G23-4 1801029G23-4 January 18, 2018 02:00 1801029G33-1 1801029G33-1 1801029G33-1

1.3 Test locations See Figure 1 for the test locations.

Dormitory building of Fuxin Pond Food Co., Ltd.

Guilin Lingui District (West) WWTP Upgrading & Improvement Project

Waste land Mountains Guilin Xinming Machine ry Co., Ltd.

Z007 county highway

Note: O indicates air quality test location.

Figure No. 1

Kehan Test Doc. No. 〔2018〕01029-G006 Page 3 of 4

1.4 Meteorological parameters See Table 5 for the meteorological parameters during the test.

Table 5 Air Air Relative Wind Wind Test date Test time Weather temperature pressure humidity speed direction (˚C) (kPa) (%) (m/s) (angle) 08:00 Cloudy 10.2 100.36 60 0.8 5 January 11:00 Cloudy 13.6 100.20 58 0.8 10 16, 218 14:00 Cloudy 14.8 99.80 58 0.8 15 20:00 / 12.3 100.12 58 1.0 10 02:00 / 12.2 100.68 56 0.8 50 08:00 Cloudy 12,8 101.16 58 0.8 75 January 12:00 Cloudy 19.6 100.36 54 1.0 65 17, 2018 14:00 Cloudy 22,5 99.92 52 0.8 70 20:00 / 18.3 100.54 57 1.0 35 January 02:00 / 13.7 100.60 56 1.0 20 18, 2018

2. Technical basis See Table 6 for the test items and methods.

Table 6 Detected limit / Analysis Test item Test basis / method scope personnel HJ/T 55-2000 Technical Guidelines on Monitoring of Unorganized Emission of / / Air Pollutants Sampling HJ/T 194-2005 Technical Specifications on Manual Monitoring of Ambient Air / / Quality TSP GB/T15432-1995 Weight Method 0.001mg/m3 Meng Yanjuan PM10 HJ618-2011 Weight Method 0.010mg/m3 Meng Yanjuan

HJ482-2009 Formaldehyde absorption - 3 Chen Yifei SO2 0.004mg/m pararosaniline Spectrophotometry Yang Xiaoling

HJ479-2009 Naphthylethylenediamine 3 NO2 0.003mg/m Jiang Huiluan hydrochloride Spectrophotometry Fourth Edition of "Air and Waste Gas 3 H2S Monitoring and Analysis Methods" 0.002mg/m Yang Xiao Methylene blue Spectrophotometry HJ534-2009 Sodium 3 Yang Xiaoling NH3 hypochlorite-salicylic acid 0.004mg/m Luo Honghua Spectrophotometry Yang Xiaoling Jiang Huiluan Odor GB/T 14675-93 Three-point comparison Yang Xiao / concentration odor bag method Huo Xiaoqing Chen Yifei Meng Yanjuan

Kehan Test Doc. No. 〔2018〕01029-G006 Page 4 of 4

3. Test equipment

See Table 7 for the main test equipment.

Table 7

Equipment serial Test item Equipment description Model number KHJCYQ002-9 KHJCYQ002-10 Air / Intelligent TSP Comprehensive Sampling Laoying 2050 KHJCYQ002-11 Sampler KHJCYQ002-12 KHJCYQ002-15 Desktop Circulating Water Multipurpose Odor sampling SHB-III KHJCYQ020 Vacuum Pump TSP, PM10 Quasi-microbalance EX125D2H KHJCYQ023-4 SO2、NO2、H2S 、 UV-visible spectrophotometer T6 New Century KHYQYQ024-2 NH3 Odor Silent oil-free air compressor WWK-1 KHJCYQ088 concentration Wind speed, wind Portable three-cup wind direction and DEM6 KHJCYQ021-1 direction anemometer Air temperature, Empty box barometer DYM3 KHJCYQ041-1 Air pressure Mechanical ventilation dryness and Humidity humidity meter DHM2A KHJCYQ092-2

4. Test results

See Table 8 to Table 9 for the test results.

Table 8 (Unit: ug/m3)

No. 1 Dormitory building of Fuxin Food Co., Ltd. Test date Test time TSP PM10 NO2 SO2 January 16, 2018 11:00 247 126 43 5 January 17, 2018 12:00 269 133 45 5

Table 9 No. 2: Upwind of WWTP boundary No. 3: Downwind of WWTP boundary Test Test H2S NH3 Odor H2S NH3 Odor date time (mg/m3) (mg/m3) concentration (mg/m3) (mg/m3) concentration (dimensionless) (dimensionless) January 08:00 0.005 0.024 <10 0.005 0.029 <10 16, 14:00 0.004 0.023 <10 0.005 0.033 <10 2018 20:00 0.005 0.026 <10 0.011 0.028 <10 January 02:00 0.002 0.023 <10 0.003 0.025 <10 17, 08:00 0.004 0.022 <10 0.004 0.023 <10 2018 14:00 0.004 0.021 <10 0.005 0.028 <10 20:00 0.005 0.019 <10 0.006 0.025 <10 January 02:00 0.002 0.023 <10 0.003 0.029 <10 18, 2018

End of Report

Annex 6

Kehan Test Doc. No. 〔2018〕01029-W024 Page 1 of 4

Project Name: Environmental Quality Status Quo Monitoring (Surface Water Test) for Guilin Municipality Lingui District (West) WWTP Upgrading and Improvement Project Client Address: 108 Zhongshan South Road, Guilin Test address: Guilin Municipality Lingui District WWTP and its neighborhood Test type: Entrusted test (monitoring and sampling by the testing company) Test date: January 16 – 23, 2018

1. Basic information

1.1 Test contents

See Table 1 for the test contents.

Table 1 Test Sampling Test section Test items frequency personnel No. 1 cross section at 500m upstream Totally 11 test of wastewater discharge outlet of items, including Lingui District WWTP water January No. 2 cross section at 500m temperature, pH 16-18, 2018 Luo Zhongbiao Taiping downstream of wastewater discharge value, SS, TP, 1 time a day, Mo Lijuan River outlet of Lingui District WWTP NH3-N, DO, sampling for Li Junjie petroleum, COD, 3 continuous No. 3 cross section at 5000m fecal coliform, days downstream of wastewater discharge BOD5, anionic outlet of Lingui District WWTP surfactant

1.2 Sample information

See Table 2 to Table 4 for the sample information.

Table 2: Test site No. 1, Dormitory building of Fuxin Food Co., Ltd. Sampling date Sample No. Sample description Appearance Surface water taken from No. 1 cross section 500m upstream of the Light yellow, slightly 1801029B11-1 wastewater discharge outlet of Lingui stinky, free of floating oil District WWTP Surface water taken from No. 2 cross January 16, section 500m downstream of the Light yellow, odorless, 1801029B12-1 2018 wastewater discharge outlet of Lingui free of floating oil District WWTP Surface water taken from No. 1 cross section 5000m downstream of the Light yellow, odorless, 1801029B13-1 wastewater discharge outlet of Lingui free of floating oil District WWTP

Kehan Test Doc. No. 〔2018〕01029-W024 Page 2 of 4

Table 2: Test site No. 1, Dormitory building of Fuxin Food Co., Ltd. (Continued) Sampling date Sample No. Sample description Appearance Surface water taken from No. 1 cross section 500m upstream of the Light yellow, slightly 1801029B21-1 wastewater discharge outlet of Lingui stinky, free of floating oil District WWTP Surface water taken from No. 2 cross January 17, section 500m downstream of the Light yellow, odorless, 1801029B22-1 2018 wastewater discharge outlet of Lingui free of floating oil District WWTP Surface water taken from No. 3 cross section 5000m downstream of the Light yellow, odorless, 1801029B23-1 wastewater discharge outlet of Lingui free of floating oil District WWTP Surface water taken from No. 1 cross section 500m upstream of the Light yellow, slightly 1801029B31-1 wastewater discharge outlet of Lingui stinky, free of floating oil District WWTP Surface water taken from No. 2 cross January 18, section 500m downstream of the Light yellow, odorless, 1801029B32-1 2018 wastewater discharge outlet of Lingui free of floating oil District WWTP Surface water taken from No. 3 cross section 5000m downstream of the Light yellow, odorless, 1801029B33-1 wastewater discharge outlet of Lingui free of floating oil District WWTP

2. Technical basis and analysis personnel

See Table 3 for the technical basis and analysis personnel.

Table 3 Detected limit / Analysis Test item Test basis / method scope personnel HJ/T 91-2002 Technical Specifications Sampling on Surface Water and Wastewater / / Testing Water GB/T 13195-1991 Thermometer 0 - 50˚C Meng Yanjuan temperature determination GB/T6920-1986 Glass electrode pH value method 1-14 Chen Yifei SS GB/T11901-1989 Weight Method 1mg/L Chen Yifei GB/T 11893-1989 Ammonium TP 0.01mg/L Yang Xiao molybdate Spectrophotometry HJ 535-2009 Nessler Reagent Yang Xiaoling NH3-N 0.025mg/L Spectrophotometry Luo Honghua Fecal coliform HJ 755-2015 Paper strip method 20MPN/L Jiang Huiluan Chen Yifei DO GB/T 7489-1987 Iodometric method 0.2mg/L Du Xing HJ 637-2012 Infrared Yang Xiao Petroleum 0.01mg/L Spectrophotometry Qin Huilan Fourth Edition of "Water and Wastewater Monitoring and Analysis COD Methods" State Environmental 5mg/L Huo Xiaoqing Protection Administration (2002) Rapid closed catalysis digestion H505-2009 Dilution and inoculation BOD5 0.5mg/L Yang Xiaoling method GB/T 7494-1987 Methylene blue Liang Yulong Anionic surfactant Spectrophotometry 0.05mg/L Huo Xiaoqing

Kehan Test Doc. No. 〔2018〕01029-W024 Page 3 of 4

3. Test equipment

See Table 4 for the main test equipment.

Table 4 Equipment serial Test item Equipment description Model number Water 0～50℃ KHJCYQ076-8 temperature Mercury thermometer pH value pH meter PHS-3C KHJCYQ012 SS Electronic balance CP214 KHJCYQ023-5 TP UV-visible spectrophotometer T6 New Century KHJCYQ024-2 NH3-N UV-visible spectrophotometer T6 New Century KHJCYQ024-2 Fecal coliform Biochemical incubator LRH-250A KHJCYQ011-1 DO Acid burette 50mL KHJCYQ074-3 Petroleum Infrared oil detector OIL460 KHJCYQ040 COD Acid burette 50mL KHJCYQ074-4COD BOD5 Biochemical incubator LRH250A KHJCYQ011-2 Anionic surfactant UV-visible spectrophotometer T6 New Century KHJCYQ024-2

4. Test results

See Table 5 to Table 7 for the test results.

Table 5 No. 1 cross section 500m upstream of wastewater S.N Test item Unit discharge outlet of Lingui District WWTP 1801029B11-1 1801029B21-1 1801029B31-1 1 Water temperature ℃ 14.6 14.8 14.5 2 pH value dimensionless 7.25 7.26 7.31 3 TP mg/L 0.40 0.45 0.43 4 NH3- N mg/L 9.416 9.243 8.736 5 SS mg/L 6 7 6 6 Petroleum mg/L <0.01 0.01 0.01 7 DO mg/L 7.8 7.9 8.0 8 Fecal coliform MPN/L 3.5x103 2.8x103 2.8x103 9 COD mg/L 37 38 39 10 BOD5 mg/L 18.4 29.3 17.8 11 Anionic surfactant mg/L 0.09 0.10 0.09

Kehan Test Doc. No. 〔2018〕01029-W024 Page 4 of 4

Table 6 No. 2 cross section 500m downstream of S.N Test item Unit wastewater discharge outlet of Lingui District WWTP 1801029B12-1 1801029B22-1 1801029B32-1 1 Water temperature ℃ 15.2 15.4 15.3 2 pH value dimensionless 7.26 7.35 7.28 3 TP mg/L 0.44 0.51 0.48 4 NH3- N mg/L 8.043 7.776 7.563 5 SS mg/L 5 6 5 6 Petroleum mg/L 0.01 <0.01 <0.01 7 DO mg/L 8.3 8.4 8.4 8 Fecal coliform MPN/L 5.4x103 5.4x103 3.5x103 9 COD mg/L 33 38 35 10 BOD5 mg/L 16.1 10.8 16.3 11 Anionic surfactant mg/L 0.09 0.10 0.10

Table 7 No. 3 cross section 5000m downstream of S.N Test item Unit wastewater discharge outlet of Lingui District WWTP 1801029B13-1 1801029B23-1 1801029B33-1 1 Water temperature ℃ 14.8 14.9 14.6 2 pH value dimensionless 7.23 7.24 7.38 3 TP mg/L 0.49 0.52 0.51 4 NH3- N mg/L 6.176 6.229 6.523 5 SS mg/L 5 6 5 6 Petroleum mg/L 0.01 0.01 0.01 7 DO mg/L 8.1 7.9 8.1 8 Fecal coliform MPN/L 2.8x103 3.5x103 2.8x103 9 COD mg/L 38 34 36 10 BOD5 mg/L 6.2 4.9 6.3 11 Anionic surfactant mg/L 0.09 0.09 0.09

End of Report

Annex 7

Kehan Test Doc. No. 〔2018〕01029-N015 Page 1 of 2 Project Name: Environmental Quality Status Quo Monitoring (Noise Test) for Guilin Municipality Lingui District (West) WWTP Upgrading and Improvement Project Client Address: 108 Zhongshan South Road, Guilin Test address: Guilin Municipality Lingui District WWTP and its neighborhood Test type: Entrusted test (monitoring and sampling by the testing company) Test date: January 16 – 17, 2018

1. Basic information 1.1 Project information Guilin City Lingui District (West) WWTP Upgrading and Improvement Project is located inside the plant site of Guilin City Lingui District WWTP, with Guilin Xinming Machinery Limited Liability Company on its east, Z007 County Highway on its south, waste land on its west and a pond on its northeast. 1.2 Test contents Test item: Plant boundary noise, environmental noise Test location: 5 noise test sites are arranged outside the boundary of Guilin City Lingui District (West) WWTP Upgrading and Improvement Project and in its neighborhood Test frequency: 1 test each in day (6:00 – 22:00) and in night time (22:00 – 6:00 the next day) on January 16 and 17, 2018 Test personnel: Luo Zhongbiao, Li Junjie Test environment: During the test on January 16, 2018, the weather was cloudy with a wind speed of 0.8m/s; during the test on January 17, 2018, the weather was cloudy with a wind speed of 0.9m/s; 1.3 Test locations See Figure 1 for the test locations.

Dormitory building of Pond Fuxin Food Co., Ltd.

Guilin Lingui District (West) WWTP Upgrading & Improvement Project

Waste land Mountains Guilin Xinming Machinery Co., Ltd.

Z007 county highway Note: ▲indicates plant boundary noise test locations. △indicates environmental noise test locations.

Figure No. 1

Kehan Test Doc. No. 〔2018〕01029-N015 Page 2 of 2

2. Technical basis

See Table 1 for the test items and methods.

Table 1 Test item Test basis / method Detected limit / scope GB12348-2008 Emission Standard for Industrial Plant boundary noise Enterprises Noise at Boundary 29-129dB(A) GB3096-2008 Acoustic environment quality Environmental noise standard

3. Test equipment

See Table 2 for the main test equipment.

Table 2

Equipment serial Equipment description Model number Multifunctional sound level meter AWA6228 KHJCYQ015-2 Portable three-cup wind direction and anemometer DEM6 KHJCYQ021-1 Acoustic calibrator AWA6223 KHJCYQ014

4. Test results

See Table 3 for the test results.

Table 3 (Unit: [dB(A)])

January 16, 2018 January 17, 2018 Test location Day Night Day Night Remarks Leq Leq Lmax Leq Leq Lmax Guilin Xinming Machinery No. 1 outside east boundary 57.6 47.8 54.6 58.7 48.8 58.1 Limited Liability Company No. 2 outside south 55.4 44.6 57.2 57.3 45.6 56.5 County Highway Z007 boundary No. 3 outside west boundary 53.6 44.2 53.5 55.2 45.2 54.3 Wasteland No. 4 outside northeast 54.2 45.3 55.2 56.5 46.4 55.9 Pond boundary No. 5 outside the dormitory building of Guilin Fuxin Food 53.0 43.7 / 54.4 45.5 / Sensitive site Co., Ltd northwest of the Project

End of Report

Annex 8

Municipal EPB Surface Water Doc. No. [2008]17

EIR Approval:

To: Guilin Municipal Drainage Co., Ltd.

This is to acknowledge the receipt of the “Environmental Impact Report of Guilin City Shangyao WWTP Sludge Disposal Project” submitted by your company. Here described as follows are our comments of approval after review of the EIR:

I. The EIR is prepared according to the respective standards and contains a brief assessment of the environmental conditions of the Project and its neighborhood. Explicit pollution prevention and control measures are proposed in the EIR and are compliant with the environment management requirements of the Project and may be used as the main basis for pollution prevention and control and environment management in the Project.

II. The proposed project is located at Yaotou Village, Zhemu Town, Yanshan District, Guilin City and a sludge treatment system with a daily sludge disposal capacity of 120m3 will be constructed, which mainly comprises of the sludge composting workshop, the sludge storage tank, the secondary fermentation and fertilizer production workshop, the blower house, etc.. The Project involves a planned land use area of 14000m2 and a total investment of CNY 20,253,600. If the environmental protection measures proposed in the EIR are implemented, the adverse environmental impacts will be mitigated and put under control. Therefore, we agree that you may proceed with the construction of the Project in accordance with the project nature, scope, location and production processes and the environmental protection measures listed in the EIR and also the following requirements.

III. In the construction of the Project, focused efforts shall be made to ensure proper implementation of the following activities:

1. The plant site shall be paved; wastewater from workshops and equipment washing shall be connected to the plant area sewage pipelines to prevent uncontrolled discharge.

2. The various noise management measures in the operation process shall be properly implemented by means of noise insulation, silencing and absorption to make sure that the noises on the boundaries of the WWTP meets the Emission Standard for Industrial Enterprises Noise at Boundary (GB12348-2008).

3. Measures, such as addition of deodorization agents, development of odor collection and treatment system, shall be taken in the workshops to enable odor emission to meet Class 2 exhaust gas emission standard specified in the Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002).

4. Sludge storage tank

5. Pollution control measures in the construction period shall be implemented for proper prevention and control of pollution from wastewater, noise, dust and solid wastes. Construction noise shall follow the requirements in the Emission Standard for Environmental Noise on the Boundary of Construction Sites (GB12523-2011). In addition, no construction activities shall be commenced until a pollutant discharge report is submitted to the environmental protection authority according to the relevant stipulations in the national laws and regulations of environmental protection.

6. A reasonable layout plan shall be developed for the plant area. Greenbelts with a certain width shall be established. The hygienic protection distance around the WWTP is 200m from the plant boundary, within which no other sensitive projects shall be constructed.

V. This approval document shall be valid for 5 years as of the date of issuance. In the event of significant changes to the nature, scale, location, production technology or measures for prevention and control of pollution and ecological damages of a project, the EIA documents of the respective project shall be re-submitted for approval.

Responsible person: Xiao Jie

Guilin Municipal Environmental Protection Bureau November 4, 2008

Annex 9 Guilin Municipal Environmental Protection Bureau

Guilin Environmental Acceptance Doc. No. [2010]7

Approval of the Request for Final Acceptance of Environmental Protection of Guilin Shangyao WWTP Sludge Disposal Project

To: Guilin Municipal Drainage Co., Ltd.

This is to acknowledge that the Request for Final Acceptance of Environmental Protection of Guilin Shangyao WWTP Sludge Disposal Project that your company submitted is well received. On Aug. 31, 2010, we organized the site inspection and final acceptance of environmental protection of this construction project participated by the relevant authorities and organizations. Based on the opinions of site inspection and final acceptance expert panel, the following approval comments are forwarded as follows on your Request for Final Acceptance of Environmental Protection of this project:

I. We agree to the opinions made by the Expert Panel. The Project has executed the EIA and the “three simultaneousness” environmental protection policies and substantially implemented the pollution prevention and control measures proposed in the approval document and EIA report of the construction project. The formalities of environmental protection have been fulfilled; the major pollutants are compliant with the emission standards; and the conditions for final acceptance are satisfied.

II. Basic information of the Project:

The Project is located at Yaotou Village, Zhemu Town, Yanshan District of Guilin City. With a designed sludge disposal capacity of 120m3/d, the Project involves a total investment of CNY 12,040,000, including CNY191,000 as investment in environmental protection.

III. Results of Monitoring and Site Inspection as a part of the Final Acceptance 1. The monitoring data of the emission concentrations of odor, ammonia, hydrogen sulfide on the plant boundary and methane in the plant area of the Project comply with Class II standard specified in Discharge Standard of Pollutants for Municipal WWTPs (GB18918-2002). 2. Environmental noise on the plant boundary in the Project satisfies Class 2 emission limits for the acoustic environment functional zone outside the plant boundary as specified in Emission Standard for Industrial Enterprises Noise at Boundary (GB12348-2008). 3. (1) The dewatered sludge satisfies the control standard specified in

GB18918-2002 Pollutant Discharge Standards for Municipal WWTPs; (2) Heavy metal and other elements contained in the dewatered sludge satisfy GB4284-84 Control Standards for Pollutants in Agricultural Sludge; (3) Sludge used for composting after treatment satisfies the control standard included in GB18918- 2002 Discharge Standard of Pollutants for Municipal WWTPs as well as the requirements of GB4284-84 Control Standards for Pollutants in Agricultural Sludge; In addition, the quality standards specified in CJ/T249-2007 Municipal WWTP Sludge Disposal --- Sludge Quality for Mixed Landfilling; (4) sludge treated and used for composting satisfies the requirements in GB18877-2002 National Standard for Organic-Inorganic Compound Fertilizer. (5) Indicators such as heavy metal contained in sludge leachate in the composting workshop of the Project satisfy the standard requirements in GB50853-2007 Identification Standard for Hazardous Wastes --- Identification of Extraction Toxicity; (6) All the indicators for wells in the WWTP site, No. 391 well and No. 119 well in Yaotou Village satisfy the requirements of Class III standard specified in GB/T4848-93 Ground Water Quality Standard; (7) Sludge used for composting after treatment are used for fertilizers used in the planting of eucalyptus, osmanthus trees and tea trees and not for landfilling. 4. The plant area has been paved and seepage control measures taken for the sludge storage tanks. 5. There are no sensitive projects to be constructed within the 200m hygienic protection distance from the plant boundary.

IV. Based on the results of monitoring and site inspection during the final acceptance process as well as the stipulations of the relevant national laws and regulations, we hereby grant approval of the “Request for Final Acceptance of Environmental Protection of Guilin Shangyao WWTP Sludge Disposal Project “ and the formal operation of the Project.

V. Recommendations and requirements 1. Stronger efforts should be made in the monitoring and control of heavy metal, moisture content and other factors of the dewatered sludge products to ensure that the respective standards and requirements are satisfied; 2. Further improvements should be made to the deodorization measures and facilities; 3. Proper records should be kept of the sources and supplies, treatment and disposal and destination and usage of sludge and continuous improvements should be made to the sludge treatment accounts. 4. Proper rainproof measures should be implemented in the composting workshops. 5. The application of composted sludge must comply with the corresponding national standards and specifications.

Guilin Municipal Environmental Protection Bureau

Sept. 13, 2010

Annex 10-1

Municipal Drainage Monitoring (Sludge) No. [2017]004 Page 1 of 4

TEST REPORT

Report No.: Municipal Drainage Monitoring (Sludge)

[2017]004

Drainage Monitoring Station of Guilin Municipal Drainage

Construction Management Office

Municipal Drainage Monitoring (Sludge) No. [2017]004 Page 2 of 4

Notes 1. Please make sure that any of your disagreements with this test report are submitted in writing within 7 days as of the receipt of this test report. In such cases, we may conduct a retest provided that enough samples are retained; no retests shall be conducted over samples of non-repetitive test samples. 2. Where the samples are provided by the client, we are only responsible for the received ones. The sample information contained in this Report is provided by the sample deliverer of the client. The test results in this Report are only valid for the delivered samples. 3. Where the samples are taken by us under the authorization of the client, the sample information in this Report shall be filled in by the client on site when the sampling personnel hands over the samples to the client and the test results in this Report are only valid for the tested samples. 4. A test report not carrying the signature of the issuing person, containing alterations of texts or numbers, not carrying the special seal of our testing body or not carrying a riding seal on each inserted page shall be deemed as invalid. 5. Where notes are marked with special symbols in the Report, “*” indicates that the test basis or methods of the Project does not belong to the scope of testing competences subject to qualification certification (measurement certification); “#) indicates that the testing basis or methods of the Project does not belong to the scope of testing competences of national laboratory accreditation; “△” indicates that the test item is a subcontracted item. 6. The test report shall not be duplicated in parts (except full report duplication) without the written consent of our testing body. 7. Our testing body shall be responsible for interpreting the status of conformity or nonconformity of the results contained in the Test Report.

Municipal Drainage Monitoring (Sludge) No. [2017]004 Page 3 of 4

Test Report

Contact Fei Name Guilin Lingui New District WWTP person Zhenghua Client Dahuangshan Mountain, Lingui Address Telephone 3568905 Town, Lingui County Sampling Number of / 1 site samples Sample Sampling Jan. 4, / delivery time 2017 time Sample Sampling / delivery Liao Bin personnel Sample personnel information Sampling / basis Sample T2017010404 No. Sample Dewatered sludge of Lingui New District WWTP description Sample Odor, free of oil, dark brown, bulky wet sludge condition Total mercury, total arsenic, total chromium, total cadmium, Test items total lead, total copper, total zinc and total nickel in sludge Test date January 4 – March 10, 2017 Test conclusion No comments.

Municipal Drainage Monitoring (Sludge) No. [2017]004 Page 4 of 4

Test Results

Single Sample Test Standard Test Test Basis Unit Item S.N Items value Result Judgment

GB/T Total 22105.2-2008 mercury Atomic / mg/kg 2.48 / in sludge fluorescence spectrometry GB/T Total 22105.2-2008 arsenic in Atomic / mg/kg 13.9 / sludge fluorescence spectrometry HJ491-2009 Total Flame atomic chromium / mg/kg 59 / absorption in sludge spectrometry T2017010404 GB/T 17141-1997 Total Graphite furnace cadmium / mg/kg 0.67 / atomic absorption in sludge Spectrophotometry GB/T 17141-1997 Total lead Graphite furnace / mg/kg 24.9 / in sludge atomic absorption Spectrophotometry GB/T17138-1997 Total Flame atomic copper in / mg/kg 65 / absorption sludge Spectrophotometry GB/T17138-1997 Total zinc Flame atomic / mg/kg 357 / in sludge absorption Spectrophotometry GB/T17139-1997 Total Flame atomic nickel in / mg/kg 5L / absorption sludge Spectrophotometry 1. If the test result is lower than the detected limit of the respective method, the latter will be reported and be identified as “L”. Remarks 2. The test items in this Test Report have passed the laboratory qualification certification. The below space is left blank deliberately.

Testing personnel: Qin Guiping, Yang Jiapeng, Liu Weijian

Prepared by: Jiang Ping Reviewed by: Li Tingting Issued by: Tang Hongmei Signature: Signature: Signature: Date: March 16, 2017

Annex 10-2

Municipal Drainage Monitoring (Sludge) No. [2017]011 Page 1 of 4

TEST REPORT

Report No.: Municipal Drainage Monitoring (Sludge)

[2017]011

Drainage Monitoring Station of Guilin Municipal Drainage

Construction Management Office

Municipal Drainage Monitoring (Sludge) No. [2017]011 Page 2 of 4

Name of testing Drainage Monitoring Station of Guilin Municipal Drainage agency: Construction Management Office Address: No. 7 Huanchengnanyi Road, Guilin Zip code: 541004 Telephone: 0773-5815880

Municipal Drainage Monitoring (Sludge) No. [2017]011 Page 3 of 4

Test Report

Contact Fei Name Guilin Lingui New District WWTP person Zhenghua Client Dahuangshan Mountain, Lingui Address Telephone 3568905 Town, Lingui County Sampling Number of / 1 site samples Sample Sampling April 6, / delivery time 2017 time Sample Sampling / delivery Liao Bin personnel Sample personnel information Sampling / basis Sample T2017040604 No. Sample Dewatered sludge of Lingui New District WWTP description Sample Odor, free of oil, dark brown, bulky wet sludge condition Total mercury, total arsenic, total chromium, total cadmium, Test items total lead, total copper, total zinc and total nickel in sludge Test date April 6 – May 19, 2017 Test conclusion No comments.

Municipal Drainage Monitoring (Sludge) No. [2017]011 Page 4 of 4

Test Results

Single Sample Test Standard Test Test Basis Unit Item S.N Items value Result Judgment

GB/T Total 22105.2-2008 mercury Atomic / mg/kg 1.48 / in sludge fluorescence spectrometry GB/T Total 22105.2-2008 arsenic in Atomic / mg/kg 6.37 / sludge fluorescence spectrometry HJ491-2009 Total Flame atomic chromium / mg/kg 89.0 / absorption in sludge spectrometry T2017010404 GB/T 17141-1997 Total Graphite furnace cadmium / mg/kg 0.85 / atomic absorption in sludge Spectrophotometry GB/T 17141-1997 Total lead Graphite furnace / mg/kg 4.28 / in sludge atomic absorption Spectrophotometry GB/T17138-1997 Total Flame atomic copper in / mg/kg 119 / absorption sludge Spectrophotometry GB/T17138-1997 Total zinc Flame atomic / mg/kg 2.94x103 / in sludge absorption Spectrophotometry GB/T17139-1997 Total Flame atomic nickel in / mg/kg 46.4 / absorption sludge Spectrophotometry The test items in this Test Report have passed the laboratory qualification Remarks certification. The below space is left blank deliberately.

Testing personnel: Qin Guiping, Liu Weijian, Yang Jiapeng, Tan Yongquan

Prepared by: Jiang Ping Reviewed by: Li Tingting Issued by: Tang Hongmei Signature: Signature: Signature: Date: May 23, 2017

Annex 10-3

Municipal Drainage Monitoring (Sludge) No. [2017]017 Page 1 of 4

TEST REPORT

Report No.: Municipal Drainage Monitoring (Sludge)

[2017]017

Drainage Monitoring Station of Guilin Municipal Drainage

Construction Management Office

Municipal Drainage Monitoring (Sludge) No. [2017]017 Page 2 of 4

Name of testing Drainage Monitoring Station of Guilin Municipal Drainage agency: Construction Management Office Address: No. 7 Huanchengnanyi Road, Guilin Zip code: 541004 Telephone: 0773-5815880

Municipal Drainage Monitoring (Sludge) No. [2017]017 Page 3 of 4

Test Report

Contact Fei Name Guilin Lingui New District WWTP person Zhenghua Client Dahuangshan Mountain, Lingui Address Telephone 3568905 Town, Lingui County Sampling Number of / 1 site samples Sample Sampling July 12, / delivery time 2017 time Sample Sampling / delivery Li Renqiang personnel Sample personnel information Sampling / basis Sample T2017071204 No. Sample Dewatered sludge of Lingui New District WWTP description Sample Odor, free of oil, dark brown, bulky wet sludge condition Total mercury, total arsenic, total chromium, total cadmium, Test items total lead, total copper, total zinc and total nickel in sludge Test date July 12 – August 31, 2017 Test conclusion No comments.

Municipal Drainage Monitoring (Sludge) No. [2017]017 Page 4 of 4

Test Results

Single Sample Test Standard Test Test Basis Unit Item S.N Items value Result Judgment

GB/T Total 22105.2-2008 mercury Atomic / mg/kg 6.41 / in sludge fluorescence spectrometry GB/T Total 22105.2-2008 arsenic in Atomic / mg/kg 13.0 / sludge fluorescence spectrometry HJ491-2009 Total Flame atomic chromium / mg/kg 56.3 / absorption in sludge spectrometry T2017010404 GB/T 17141-1997 Total Graphite furnace cadmium / mg/kg 2,18 / atomic absorption in sludge Spectrophotometry GB/T 17141-1997 Total lead Graphite furnace / mg/kg 46.9 / in sludge atomic absorption Spectrophotometry GB/T17138-1997 Total Flame atomic copper in / mg/kg 109 / absorption sludge Spectrophotometry GB/T17138-1997 Total zinc Flame atomic / mg/kg 601 / in sludge absorption Spectrophotometry GB/T17139-1997 Total Flame atomic nickel in / mg/kg 41.7 / absorption sludge Spectrophotometry The test items in this Test Report have passed the laboratory qualification Remarks certification. The below space is left blank deliberately.

Testing personnel: Kuang Wei, Li Yongquan, Liu Weijian, Yang Jiapeng

Prepared by: Jiang Ping Reviewed by: Li Tingting Issued by: Tang Hongmei Signature: Signature: Signature: Date: Sept. 4, 2017

Annex 10-4

Municipal Drainage Monitoring (Sludge) No. [2017]027 Page 1 of 4

TEST REPORT

Report No.: Municipal Drainage Monitoring (Sludge)

[2017]027

Drainage Monitoring Station of Guilin Municipal Drainage

Construction Management Office

Municipal Drainage Monitoring (Sludge) No. [2017]027 Page 2 of 4

Name of testing Drainage Monitoring Station of Guilin Municipal Drainage agency: Construction Management Office Address: No. 7 Huanchengnanyi Road, Guilin Zip code: 541004 Telephone: 0773-5815880

Municipal Drainage Monitoring (Sludge) No. [2017]027 Page 3 of 4

Test Report

Guilin Lingui New District Contact Fei Name WWTP person Zhenghua Client Dahuangshan Mountain, Lingui Address Telephone 18877380901 Town, Lingui County Sampling Number of / 1 site samples Sample Sampling / delivery Oct. 20, 2017 time time Sample Sampling Long / delivery personnel Xiaoming Sample personnel information Sampling / basis Sample T2017102004 No. Sample Dewatered sludge of Lingui New District WWTP description Sample Odor, free of oil, dark brown, bulky wet sludge condition Total mercury, total arsenic, total chromium, total cadmium, Test items total lead, total copper, total zinc and total nickel in sludge Test date Oct. 20 – Nov. 30, 2017 Test conclusion No comments.

Municipal Drainage Monitoring (Sludge) No. [2017]027 Page 4 of 4

Test Results

Single Sample Test Standard Test Test Basis Unit Item S.N Items value Result Judgment

GB/T Total 22105.2-2008 mercury Atomic / mg/kg 4.67 / in sludge fluorescence spectrometry GB/T Total 22105.2-2008 arsenic in Atomic / mg/kg 15.8 / sludge fluorescence spectrometry HJ491-2009 Total Flame atomic chromium / mg/kg 125 / absorption in sludge spectrometry T2017010404 GB/T 17141-1997 Total Graphite furnace cadmium / mg/kg 0.04 / atomic absorption in sludge Spectrophotometry GB/T 17141-1997 Total lead Graphite furnace / mg/kg 17.0 / in sludge atomic absorption Spectrophotometry GB/T17138-1997 Total Flame atomic copper in / mg/kg 106 / absorption sludge Spectrophotometry GB/T17138-1997 Total zinc Flame atomic / mg/kg 1.64X103 / in sludge absorption Spectrophotometry GB/T17139-1997 Total Flame atomic nickel in / mg/kg 10.1 / absorption sludge Spectrophotometry The test items in this Test Report have passed the laboratory qualification Remarks certification. The below space is left blank deliberately.

Testing personnel: Yang Jiapeng, Qin Guiping

Prepared by: Jiang Ping Reviewed by: Li Tingting Issued by: Tang Hongmei Signature: Signature: Signature: Date: Dec. 11, 2017

Annex 10-5

T201801004 Page 1 of 4

TEST REPORT

Report No.: T201801004

Drainage Monitoring Station of Guilin Municipal Drainage

Construction Management Office

T201801004 Page 2 of 4

Name of testing Drainage Monitoring Station of Guilin Municipal Drainage agency: Construction Management Office Address: No. 7 Huanchengnanyi Road, Guilin Zip code: 541004 Telephone: 0773-5815880

T201801004 Page 3 of 4 Test Results Sample No.: T2018010304 Standard Test Single Item Test Items Test Basis Unit value Result Judgment GB/T 22105.2-2008 Soil quality Determination of total mercury, Total mercury total arsenic, and total lead / mg/kg 3.00 / in sludge Atomic fluorescence spectrometry GB/T 22105.2-2008 Soil quality Determination of total mercury, Total arsenic total arsenic, and total lead / mg/kg 5.96 / in sludge Atomic fluorescence spectrometry HJ491-2009 Total Soil Determination of total chromium in / mg/kg 89 / chromium Flame atomic sludge absorption spectrometry GB/T 17141-1997 Total Soil quality Determination of lead cadmium in and cadmium Graphite furnace / mg/kg 0.81 / sludge atomic absorption Spectrophotometry GB/T 17141-1997 Soil quality Determination of lead Total lead in and cadmium Graphite furnace / mg/kg 14.4 / sludge atomic absorption Spectrophotometry GB/T17138-1997 Total copper Soil quality Determination of / mg/kg 109 / in sludge copper and zinc Flame atomic absorption Spectrophotometry GB/T17138-1997 Total zinc in Soil quality Determination of / mg/kg 206 / sludge copper and zinc Flame atomic absorption Spectrophotometry GB/T17139-1997 Total nickel in Soil quality Determination of / mg/kg 28.2 / sludge nickel Flame atomic absorption Spectrophotometry The below space is left blank deliberately .

T201801004 Page 4 of 4

Test Report

Guilin Lingui New District Contact Fei Name WWTP person Zhenghua Client Dahuangshan Mountain, Lingui Address Telephone 18877380901 Town, Lingui County Discharge Sample type Dewatered sludge / destination Sampling Monitoring Discharge / / / method purpose outlet status Sampling Treatment Weather personnel / facility / / Liao Bin condition Sample status deliverer Sampling / Sampling January 3, / delivery basis 2018 time

Sampling Number of / 1 site samples Sample Sample information T2018010304 No. Sample Dewatered sludge of Lingui New District WWTP description Sample Odor, free of oil, dark brown, bulky wet sludge condition Total mercury, total arsenic, total chromium, total cadmium, Test items total lead, total copper, total zinc and total nickel in sludge Test date Jan. 3– Jan. 29, 2018 Test conclusion No comments. The test items in this Test Report have passed the laboratory qualification certification. Testing personnel: Kuang Wei, Liu Weijian

Prepared by: Jiang Ping Reviewed by: Wang Zan Issued by: Tang Hongmei Signature: Signature: Signature: Date: Feb. 6, 2018

Annex 10-6

T201805005 Page 1 of 4

TEST REPORT

Report No.: T201805005

Drainage Monitoring Station of Guilin Municipal Drainage

Construction Management Office

T201805005 Page 2 of 4

Notes 8. Please make sure that any of your disagreements with this test report are submitted in writing within 7 days as of the receipt of this test report. In such cases, we may conduct a retest provided that enough samples are retained; no retests shall be conducted over samples of non-repetitive test samples. 9. Where the samples are provided by the client, we are only responsible for the received ones. The sample information contained in this Report is provided by the sample deliverer of the client. The test results in this Report are only valid for the delivered samples. 10. Where the samples are taken by us under the authorization of the client, the sample information in this Report shall be filled in by the client on site when the sampling personnel hands over the samples to the client and the test results in this Report are only valid for the tested samples. 11. A test report not carrying the signature of the issuing person, containing alterations of texts or numbers, not carrying the special seal of our testing body or not carrying a riding seal on each inserted page shall be deemed as invalid. 12. Where notes are marked with special symbols in the Report, “*” indicates that the test basis or methods of the Project does not belong to the scope of testing competences subject to qualification certification (measurement certification); “#) indicates that the testing basis or methods of the Project does not belong to the scope of testing competences of national laboratory accreditation; “△” indicates that the test item is a subcontracted item. 13. The test report shall not be duplicated in parts (except full report duplication) without the written consent of our testing body. 14. Our testing body shall be responsible for interpreting the status of conformity or nonconformity of the results contained in the Test Report.

Name of testing Drainage Monitoring Station of Guilin Municipal Drainage agency: Construction Management Office Address: No. 7 Huanchengnanyi Road, Guilin Zip code: 541004 Telephone: 0773-5815880

T201805005 Page 3 of 4

Test Report

Sampling Number of / 1 site samples Sample Sample information T2018040205 No. Sample Dewatered sludge of Lingui New District WWTP description Sample Odor, free of oil, dark brown, bulky wet sludge condition Total mercury, total arsenic, total chromium, total cadmium, Test items total lead, total copper, total zinc and total nickel in sludge Test date April 2 – May 22, 2018 Test conclusion No comments. The test items in this Test Report have passed the laboratory qualification certification. Testing personnel: Qin Guiping, Yang Jiapeng

Prepared by: Jiang Ping Reviewed by: Li Tingting Issued by: Tang Hongmei Signature: Signature: Signature: Date: May 25, 2018

T201805005 Page 4 of 4

Test Results

Sample No.: T2018040205

Standard Test Single Item Test Items Test Basis Unit value Result Judgment GB/T 22105.2-2008 Soil quality Determination of total mercury, Total mercury total arsenic, and total lead / mg/kg 9.35 / in sludge Atomic fluorescence spectrometry GB/T 22105.2-2008 Soil quality Determination of total mercury, Total arsenic total arsenic, and total lead / mg/kg 6.30 / in sludge Atomic fluorescence spectrometry HJ491-2009 Total Soil Determination of total chromium in / mg/kg 78.0 / chromium Flame atomic sludge absorption spectrometry GB/T 17141-1997 Total Soil quality Determination of lead cadmium in and cadmium Graphite furnace / mg/kg 3.0 / sludge atomic absorption Spectrophotometry GB/T 17141-1997 Soil quality Determination of lead Total lead in and cadmium Graphite furnace / mg/kg 36.6 / sludge atomic absorption Spectrophotometry GB/T17138-1997 Total copper Soil quality Determination of / mg/kg 109 / in sludge copper and zinc Flame atomic absorption Spectrophotometry GB/T17138-1997 Total zinc in Soil quality Determination of / mg/kg 666 / sludge copper and zinc Flame atomic absorption Spectrophotometry GB/T17139-1997 Total nickel in Soil quality Determination of / mg/kg 33.7 / sludge nickel Flame atomic absorption Spectrophotometry The below space is left blank deliberately .

Annex 10-7

T201808008 Page 1 of 4

TEST REPORT

Report No.: T201808008

Drainage Monitoring Station of Guilin Municipal Drainage

Construction Management Office

T201808008 Page 2 of 4

Name of testing Drainage Monitoring Station of Guilin Municipal Drainage agency: Construction Management Office Address: No. 7 Huanchengnanyi Road, Guilin Zip code: 541004 Telephone: 0773-5815880

T201808008 Page 3 of 4

Test Report

Guilin Lingui New District Contact Fei Name WWTP person Zhenghua Client Dahuangshan Mountain, Lingui Address Telephone 18877380901 Town, Lingui County Discharge Sample type Dewatered sludge / destination Sampling Monitoring Discharge / / / method purpose outlet status Treatment Weather Sample facility / / Liao Bin condition deliverer status Sample Sampling / delivery July 2, 2018 basis time

Sampling Number of / 1 site samples Sample Sample information T2018070205 No. Sample Dewatered sludge of Lingui New District (East) WWTP description Sample Odor, free of oil, dark brown, bulky wet sludge condition Total mercury, total arsenic, total chromium, total cadmium, Test items total lead, total copper, total zinc and total nickel in sludge Test date July 2 – August 30, 2018 Test conclusion No comments. The test items in this Test Report have passed the laboratory qualification certification. Testing personnel: Qin Guiping, Liu Weijian

Prepared by: Jiang Ping Reviewed by: Li Tingting Issued by: Tang Hongmei Signature: Signature: Signature: Date: Sept. 3, 2018

T201808008 Page 4 of 4

Test Results

Sample No.: T2018070205

Standard Test Single Item Test Items Test Basis Unit value Result Judgment GB/T 22105.2-2008 Soil Total quality Determination of mercury in total mercury, total arsenic, / mg/kg 8.52 / sludge and total lead Atomic fluorescence spectrometry GB/T 22105.2-2008 Soil Total quality Determination of arsenic in total mercury, total arsenic, / mg/kg 13.30 / sludge and total lead Atomic fluorescence spectrometry HJ491-2009 Total Soil Determination of total chromium / mg/kg 60.5 / chromium Flame atomic in sludge absorption spectrometry GB/T 17141-1997 Soil quality Determination Total of lead and cadmium cadmium in / mg/kg 2.19 / Graphite furnace atomic sludge absorption Spectrophotometry GB/T 17141-1997 Soil quality Determination Total lead in of lead and cadmium / mg/kg 56.2 / sludge Graphite furnace atomic absorption Spectrophotometry GB/T17138-1997 Soil quality Total Determination of copper copper in / mg/kg 147 / and zinc Flame atomic sludge absorption Spectrophotometry GB/T17138-1997 Soil quality Total zinc in Determination of copper / mg/kg 338 / sludge and zinc Flame atomic absorption Spectrophotometry GB/T17139-1997 Soil quality Total nickel Determination of nickel / mg/kg 51.3 / in sludge Flame atomic absorption Spectrophotometry The below space is left blank deliberately.