China - Second Guangdong Pearl River Delta Urban Environment (Foshan and Jiangmen) Project : environmental assessment (Vol. 6 of 6) : Environmental Management Plan - draft

E1 399 VOL. 6 World Bank Financed PRD II Project Jiangmen Component-Wenchangsha Wastewater Treatment Plant Phase II Environment Management Plan Jiangmen Drainage Management Department April 2006  Table of Content Overview ................................................ 1 1. Introduction ................................................2 1.1 Significance of the Project .................................................2 1.2 Component Description and Technical Data ...................... ...........................2 2. Environmental Protection Targets .................................................3 2.1 Air Quality ................................................3 2.2 Water Quality ................................................3 2.3 Noise .................................................3 2.4 Public Health .................................................4 2.5 Solid Waste .................................................4 3. Environment Impact Assessment .................................................4 3.1 Impact Factors on the Environment ................................................4 3.2 Assessment Standards .................................................4 3.3 Scope of Assessment .................................................8 3.4 Environmental Impact Assessment ................................................9 4. Management Plan of Environmental Protection ................................................ 11 4.1 Organization and Duty of Environmental Management ............................................. 11 4.2 EMP during Design Phase ................................................ 14 4.3 EMP during Construction Phase ................................................ 14 4.4 Management for Contractors ................................................ 15 4.5 Environmental Management Plan during Operation Phase ......................................... 16 5. Environment Protection monitoring Plan ................................................ 22 5.1 Monitoring Purpose ................................................ 22 5.2 Monitoring Implementation ................................................ 22 5.3 Monitoring Facility and Expense ................................................ 23 6. Training for personnel ................................................ 23 7. Information Exchange ................................................ 27 8. Recording ................................................ 27 9. Reporting ................................................ 27  Overview The Environment Management Plan (EMP) is prepared based on "Environmental Impact Assessment Report for Jiangmen Wenchangsha WWTP Phase II Project" and completed with proper supplementary and revision based on the comments received from related parties. The EMP is a separate document involving all activities for environment protection during phases of design, construction and operation. The EMP offers a guideline for pollution mitigation measures, environment management and monitoring. The EMP consists of following contents: * Introduction * Potential environmental impact * Management structure and duty * Environment management plan * Environmental monitoring plan Purpose of EMP: High quality design and strict environment assessment have been made for the PRD Phase II Jiangmen component - Wenchangsha WWTP Phase II Project (called Project in this report) in order to minimize the adverse impact on the society and environment. Appropriate environment protection policies will be followed to solve the environment problems. It is inevitable that the project will pose impact on the environment. One of the primary purposes of EMP is to identify potential impact so as to develop technically feasible, economically sustainable and operational policies for environment protection in both construction and operation phases. The policies were determined during the environment assessment phase and are stated in EMP, and will be applicable in construction and operation phases. The function of EMP is to list the policies for environmental strategy, as well as the monitoring and Institutional arrangement during construction and operation phases to eliminate or reduce the adverse impact on the environment. The EMP will be an important linkage between environment protection policies and actual activities, which ensures the realization of environment protection objectives. Page I of 28  1. Introduction 1.1 Significance of the Project Jiangmen City is located at central south of Guangdong Province, at the lower reaches of the Xijiang River and on the west of Pearl River Delta. The total city area of Jiangmen is 9,541km2 and the population is around 3.8 million. With the reform and opening policy and high-speed economic development, the GDP in Jiangmen has been ranked top list among the major and medium sized cities. However, the city's infrastructure development of wastewater treatment could not meet the need of the economic development. At present there are only Wenchangsha WWTP and Fengle WWTP in the city urban area (Xinhui area is not included), and the treatment capability is 50,000 m3/d and 40,000 m3/d respectively. However the urban wastewater generated in Jiangmen is around 280,000 m3/d, far beyond the treatment capability. In addition, the slow construction of the wastewater collection system results in vast wastewater discharging into Tiansha and Jiangmen River nearby without any treatrnent so that the water quality of Tiansha River is polluted and the annual average water quality is Class V; while the water quality of Jiangmen river is also slightly polluted and the annual average water quality is Class IV. And the water quality gets even worse in dry seasons. For the historical reason, the interception networks are not quite complete in Jiangmen city. The coverage rate is less than 35% of the built-up city area. As a result, most of the urban wastewater is discharged directly into Jiangmen and Tiansha Rivers. Jiangmen City is located close to Xijiang River, on the upstream of Zhongshan City, Zhuhai City and Macao Special Administrative Region. The water resource of industrial and domestic users in those cities downstream are mainly from Xijiang River, hence the water environment of Jiangmen plays a very important role to guarantee the normal water supply in these cities. 1.2 Component Description and Technical Data The service areas of Wenchangsha WWTP Phase II Project include: Western part of Tiansha River and Baisha industrial district, Pengjiang Island in eastern part of Tiansha River, northern part of Jiangmen River, southern part of Jiangmen River and Wenchangsha area in Liyue Town. The project will be built in Wenchangsha, Liyue town in Jiangmen city. Main construction components include Wenchangsha WWTP Phase II, associated wastewater collection networks and pumping stations. For details, refer to table 1-2-1. Page 2 of 28  2. Environmental Protection Targets 2.1 Air Quality Ambient air quality in the areas close to wastewater networks, WWTP, schools and residential areas on both sides of the traffic route will not be affected by implementation of the Project. The odor generated during operation of WWTP will not affect the sensitive receivers nearby. Class II in GB3095-1996 of Quality Standard of Ambient Environment will be adopted for the ambient air quality for the Project construction area. Table 1-2-1 Main Work of Wenchangsha WWTP Project Phase I Sub-component . Construction Project Description Locabon Scale Investment Civil engineering Improved A2/O & Equipment of Wenchangsha, Liyue Town, Jiangmen process, 95.49million WVVTP 150,000 m3/d Collection East and west of Tiansha River, south and north o 22.49km 108.65 networks Jiangmen River, Wenchangsha in Liyue Town DN300-dl500 million East bank of Tiansha River, southeast comer of the 1 intersection between Sheng Li Bei Road and Tian 91,800 m3/d Ning Road Between Jiangmen River and Jianghai No.2 Road, Lift 2 within the park to the southeast of Jiangmen 15,700 m3/d pumping Stainless Steel Factory 18milion stations On the bank of Jiangmen River that is near the intersection between Jiang Bei Road and Pao Tai 62,600 m3/d Road, to the southeast of existing drainage pumping house in Lianghua area 2.2 Water Quality The surface water quality in the construction areas of wastewater networks and WWTP shall be well protected, the water quality of Jiangmen River, the receiving water body, during construction and operation phases shall be controlled to reach Class IV in the Surface Water Quality Standards(GB3838-2002). 2.3 Noise The sound environment quality will not be obviously affected by the Project at the sensitive receivers such as sewage pipelines laying areas, construction areas of WWTP, schools and residential areas on both sides of the traffic route. Noise levels close to the interceptor's construction area along traffic route will be controlled to reach Category IV in Urban Sound Environment Standards(GB3096-93). Noise levels Page 3 of 28  ( 3 ) Noise Noise in construction areas along traffic route will follow Class IV in Sound Environmental Quality Standards (GB3096-93); the) noise in other construction areas will follow Class II in Sound Environmental Quality Standard (GB3096-93). The noise sensitive receivers such as hospitals and schools will follow Class I in Sound Environmental Quality Standard (GB3096-93). For details, refer to table 3-2-3: Table 3-2-3 Sound Environmental Quality Standards ( GB3096-93 ) Leq [dB ( A ) I Item Category I Category II Categoryil Item Standard Value Standard Value Standard Value Daytime 955 <60 <70 Nighttime :45 <50 <55 3.2.2 Standard of Pollutants Discharge (1) The wastewater discharge from the construction site will follow the standard of Class I of Integrated Standard for Wastewater Discharges(GB8978-1996), For details, refer to Table 3-2-4. Table 3-24 Integrated Standard for Wastewater Discharges ( GB8978-1996 ). mg/L (pH Excepted) I-te PH SS COD BOD5 Oil NH3-N TP | I lass I Class 3 | 6-9 |<70mg/ <lOOmg/L <20mg/L |55mg/L <15mg/L<0.5mg/! (2) The emission will follow the standards of Class II of Integrated Emission Standard of Air Pollutants(GB 16297-1996). For details, refer to Table 3-2-5. Table 3-2-Sntegrated Emission Standard of Air Pollutants (GB16297-1996 ) mg/L (pH Excepted) Maximum Maximum concentration standard Item allowable emission limits around the periphery of concentration non-organized emission S02 550 0.40 NO, 240 0.12 r Suspended Solid 120 1.0 (3) At construction site, Noise Limits for Construction Site (GB12523-90) will be Page 6 of 28  followed. For details, refer to Table 3-2-6. Table 3-2-6 Noise Limits for Construction Site ( GB12523-90 ) Equivalent Sound Level Leq[dB (A ) I Construction Main Noise Source Noise Limits Phase Daytime Nighttime Earthwork Bulldozer, Excavator and Loader, etc. 75 55 Piling all kinds of piling e driving hammer, 85 Construction Piling etc. Prohibited Structure Concrete mixer, vibration bar, 70 55 electric saw, etc I Decoration Crane, lift etc. 65 55 (4) Effluents discharge will follow the stricter one between the standard of Class 1 B of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002) and Class 1 of Discharge Limits of Water Pollutants of Guangdong Province. For details, refer to Table 3-2-7 and Table3-2-8. Table 3-2-7 Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant ( GB18918-2002 ) mg/L ( pH Excepted) Number Basic Control Item Class 1B 1 COD Chemical Oxygen Demand 60 2 BOD5 2 Biological Oxygen Demand (in 5 days) 3 SS Suspended Solids 20 4 Plant and Animal Oil 3 5 Oils 3 6 Anionic Surface Surfactant I 7 TN-Total Nitrogen (by N) 20 8 N13-N (by N) 8 15 9 TP- Total Phosphorus (by P) 1 10 Chroma (Dilution Multiple) 30 11 pH 6-9 12 Fecal Coliforms ( number /L ) 104 Table 3-2-8Discharge Limits of Water Pollutants of Guangdong Province mg/L (pH Excepted) Number Pollutants Class 1 Page 7 of 28  1 pH 6 2 Color 50 3 SS-Suspended Solids 20 BODs Biological Oxygen Demand (in 5 2 5 COD Chemical Oxygen Demand 40 6 Oil 5.0 7 Plant and Animal Oil 10 8 Volatile Phenol 0.3 9 Total Cyanide 0.3 10 Sulfide m0.5 X 11 NH3-N 10 12 Phosphate (by P) 0.5 (5) Odor from the wastewater treatment plant will follow Emission Standard for Odor Pollutants. For details, refer to Table 3-2-9. Table 3-2-9 Emission Standard for Odor Pollutants Number | Control Item | Unit | Class I l l ~~~NH3 mg/mn3 1.0 2 H25 mg/in 0.03 3.3 Scope of Assessment Assessment scope of water environment, air environment and acoustic environment for the proposed Project is summarized in Table 3-3-1. Table 3-3-1. Scope of Assessment for the Project \Period Scop Construction Phase Operation Phase Item _ Jiangmen River and Tiansha River Outfalll and other discharges are affected by the wastewater into Jiangmen River and generated during the period of the Tiansha River. The key point is Water Environment interceptor laying the assessment for Jiangmen River which is the receiving water body of the effluents from the wastewater plant. Around 200m from the Scope of assessment is mainly . ~~~construction sites of interceptor focused on the WW.TP and Air Environment laying activities and other- 500m from it. construction sites. Scope of assessment for the . . ~~Both sides along the area of the sites of Wenchangsha WWTP Acousic Eviroment construction sites of pipe network and 3 pump stations: within ___________________laying activities and other 1 O0m envelope curve of the Page 8 of 28  construction sites sites, with an appropriate extension to the sensitive receivers nearby. 3.4 Environmental Impact Assessment 3.4.1 Construction Plan The project preparation started in 2005 and is planned to start construction by the end of 2006 and put into operation in July 2008. 3.4.2 Environmental Impact During Construction Phase ( 1 ) Wastewater Generated During Construction Phase Wastewater is mainly generated during the construction period of pipe jacking, construction machinery and equipment's cleaning and washing, concrete mixing and domestic sewage generated from the construction and supervision workers. ( 2 ) Exhaust gas and Dust Emission During Construction Phase The main sources of exhaust gas are fuel-burning mechanical devices and transport vehicles. The dust is mainly generated from pipeline excavating and earthwork backfilling and the dust from the transport vehicles, etc. Exhaust gas and dust emission could affect the ambient air quality and be harmful to the environment and public health. ( 3 ) Noise from Construction Noise from construction consists of the following types: fixed and continuous noise generated from the construction devices during pipe jacking and pipeline excavating; mobile noise from the transport vehicles when the waste soil and construction materials are being transported. The noise mainly affects the construction workers on site and some residents living close to the construction sites. ( 4 ) Solid Waste Certain quantity of solid wastes will be generated during the construction period of pipeline laying and civil works for the wastewater treatment plant. Improper disposal of abandoned dregs from engineering excavating and workers' domestic waste will destroy the vegetation and affect the landscape, and also easily cause water and soil erosion. Disposal at will of domestic waste and other abandoned solid wastes will destroy the environmental sanitation and affect the urban landscape. ( 5 ) Urban Transport Mainly there will be three kinds of impact on transport during the construction period: Page 9 of 28  (D There might be traffic disruption or congestion as the roads need to be excavated for sewer networks construction. ( Traffic will be blocked when there is road excavating and earthwork piling up.