China - Yangzhou Thermal Power Project : environmental assessment report (Vol. 2 of 4)

E 1 3 YANGZHOU NO 2 POWER PLANT FIRST PHASE PROJECT ENVIRONMENTAL ASSESSMENT REPORT East China Electric Power Design Institute April 1993 Shanghai  Table of Contents Chapter 1 General 1.1 Reference documents 1. 2 Purpose of assessment 1. 3 Space limits of assessment 1. 4 Assessment standard Chapter 2 Project description 2.1 Briefs of power plant planning 2. 2 Site description _ - 11'' ' " . ' 2.3 General layout of the power plant 2. 4 Operation process flow ' Rcc'd 2. 5 Fuel and transportation - -____ Chapter 3 Engineering analysis 3.1 Water source and water supply system ' Lo 3. 2 Water discharge and treatment system 3.3 Air quality control system - 3. 4 Ash handling system 3. 5 Coal jetty works 3. 6 Power transmission line works Chapter 4 Investigation on present environmental conditions 4. 1 Natural environment of site area 4. 2 Social environment 4. 3 Status quo of environmental quality 4. 3. 1 Atmospheric environmental quality 4. 3. 2 Water environmental quality 4. 3. 3 Noise on site area Chapter 5 Environmental impact assessment 5. 1 Environmental impact during construction phase 5.2 Atmospheric environmental impact assessment 5. 2. 1 Meteorological characteristics of site area pollution S. 2. 2 Prediction on atmospheric environmental impact 5. 2. 3 Impact of flourides to mulberry and silkworm breeding I  5. 3 Water environmental impact 5. 3. 1 Mechanical damage to fishes at the water in-take structure 5. 3. 2 Analysis of warm water discharge impact to environment 5. 3.3 Waste and Sewage water discharge impact to environment 5. 3. 4 Impact of ash yard water permeation into underground water 5. 4 Impact and multi-purposed utilization of ash and slag 5.5 Noise 5. 5. 1 Construction phase 5. S. 2 Operation phase 5. 6 Coal jetty 5. 7 Power transmission line 5. 8 Risk assessment 5. 8. 1 Physical risks 5. 8. 2 Natural disasters risks Chapter 6 Alternative Schemes 6. 1 Comparison of sites 6. 2 Comparison of stack schemes Chapter 7 Environmental management and monitoring programme 7. 1 Follow -up investigation on social and economic efficiency for the power plant 7. 2 Environmental management and monitoring during project construction 7. 3 Environmental monitoring during plant operation Chapter 8 Social, economic and environmental benefits analysis 8.1 Social benefits. 8. 2 Economic benefits 8. 3 Environmental loss and gain Chapter 9 Site green plan Chapter 10 Population Relocation Chapter 11 Public participation Chapter 12 Conclusions and recommendations Appendices: 1. Curriculum vitaes of authors 2. References 3. Abstracts from assessment standards 4. Reply Letter on Review Comments over the Environmental Assess-  ment Programme for the First Stage Project of Yangzhou No. 2 Power Plant of Jiangsu Province --Document (1992) No. 144 by National Environmental Protection Administration. 5. Approval and Comments on Yangzhou No. 2 Power Plant First Stage Project Proposal - - Document No. (92) 1348 by State Planning Commission 6. Letter on Environmental Assessment Criteria for Yangzhou No. 2 Power Plant of Jiangsu Province --Document (93) No. 1 by the Environmental Protection Bureau of Jiangsu Province. 7. Reply Letter on Review Comments over the Environmental Assess- ment Report for the First Stage Project of Yangzhou No. 2 Power Plant - Document (1993) No. 082 by National Protection Adminis- tration.  Chapter 1 General 1. 1 Reference Documents 1. 'Approval and comments on the Yangzhou No. 2 Power Plant First Stage Pro- ject Proposal' -- Document No. (92) 1348 by State Planning Commission. 2. "Letter of entrusting to do Supplementary Feasibility Study on 2X600MW In- stalled Capacity for Yangzhou No. 2 Power Plant First Stage Project" --Document No. (92) 484 by Jiangsu Provincial Electric Power Bureau. 3. "Letter of entrusting to Reprepare the Environmental Assessment Report for Yangzhou No. 2 Power Plant in Accordance with Requirements on World Bank fi- nanced projects" --Document No. (92) 677 by Jiangsu Provincial Electric Power Bureau. 4. "Environmental Impact Assessment Programme for Yangzhou No. 2 Power Plant (for Approval)' and the review comments on the programme by NEPA. 5. "Environmental Protection Act for Construction Projects" -- Document No. (86) 003 jointly by Environmental Protection Commission under the State Council, State Planning Commission and State Economic Commission. 6. "Regulations for Environmental Protection Control at Early Stage of Fossil- Fired Power Plant Construction Projects" -- Document No. (89) 993 by the Min- istry of Energy. 7. "Environmental Protection Design Rules for Fossil-Fired Power Plants (for Trial Implementaton)Y -- Document No. DLGJ 102-91 by the Electric Power Plan- ning and Design Adminisstration of the Ministry of Energy. 8. The World Bank Operational Directive 4: Environmental Assessment. 1. 2 Purpose of assessment The purpose of assessment is to investigate the status quo of the local environ- ment in the vicinity of the planned project site, assess the potential impact from the project during its construction and operation to the surrounding environment, recom- mend effective measures to mitigate the adverse effects, justify the feasibility of the planned project from the environmental point of view and, finally, serve as the basis for the preliminary design after the report has been approved by authorities concerned. 1. 3 Space limits for assessment For atmospheric quality assessment, an area of 10km radius with the plant stack 1  Chapter 2 Project Description 2. 1 Briefs of power plant planning Yangzhou No. 2 Power Plant will be a new project, and its first phase will include three parts: power generation, power transformation and transmission, and the plant -use jetty. For the first phase, 2X600MW units will be constructed, with extension space reserved for a final plant capacity of 4X600MW as planned. This assessment is based on the capacity of the first phase of 2X 600MW. The first phase project will use a World Bank Loan of USD400 million, and the principal equipment will be procured through international competitive bidding. It will need total investment of about RMB 5. 28 billion yuan (1992 price), making an inte- grated unit investment of 4400yuan/kw. The Stage I project will occupy an area of about 52. 7 hectares. The total planned area is 79 hectares, and the construction area will occupy 33 hectares. The operation of the plant (phase I) will require a staff of 1700 people. The living quarters, according to the plans by the Yangzhou Municipal Government, will be built to the west of Yangzhou City. 2. 2 Site description The Biangang Site is located in Bali Township of Hanjiang County, Yangzhou city. It is situated along the embankment of Changjiang River, about 3. 5km to the northeast of Guazhou Town; 11km to the south of Yangzhou City and facing Zhenjiang City straight across the Changjiang River. To its close east is the planned Yangzhou Harbour Area of 10, 000 tonnage class berths, and the Grand Canal runs into the Changjiang River at about 3. 5km to the east of the site. The geographical location of the site is shown in Fig. 2-1. The site sits on the alluvial plain of the lower reaches of the Changjiang River, with a smooth terrain. The natural topographic elevation by average is 3. 83m (Yellow Sea Datum), and the river embankment elevation is about 8. OQm, higher than the max. tide level in 100 years (6. 77m). Most part of the site area at present covers flat and cultivated fields, with a few small ponds and rivers without any industrial facili- ties. There will be only 509 houses needed to be torn down, totaling about 24453. 1 sq. m. and 1921 residents will be affected. 2. 3 General layout of the power plant 3  lSitu Temnpla Celbl. 6 0 j 6 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~~hoge .*j ' . Legend * ~ ~ ~~~~~~~~~~aisneStation -G Arod Meteoo la y/allob ratonstat n Mologioa yanp ou- - ' - ringPoin z~~~~F R*ve yot La a 5 . . . . |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~SlLg   u~~~~~~~~~~~~~ .' .i.Fig 2-2 Gcneral Arrangement Plan for Blangang Site . . . t _ _ . . . . . .. .<. .* pX~~~~~~~-* * ' ~~ - * .-~~~-- ----- --~~* * cQ - Fg 2- Geeal for  /- 1 ' * I f 3 superheat steam -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~b n . I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~I ot air ' .1zr turbine~~~~~~~~~~~~ air psrebeating unit ~~~~~~ a ~~~~~~~~~~~~~~~to ash yard powder i River ~~~~~~~~condensate pMp) tn. Foolint water A~~~~~~~~~~~~~~~~~sh sluice pipepm o s Fig. 2 Tho Typical process and Main Equipment of A Coakl-Fired Power Ptlant ~~'~~~1~  *L L - Table 2-1 Design Coal Consumption of the power Plant Annual consumption Capacity Hourly consumption Daily consumption (6500H) (T /Hour) (22H) (T/D) (1000H ) 1X600MW 250 5500 152. 5 2X600MW 500 11000 325 4X600MW 1000 22000 650 Table 2-2 Shenfu-Dongsheng Coal Quality Analysis Item Unit Design Coal Low calorific value QTD, KCal/kg 5445 Ash Ay .| 11.00 Volatile Vt % 36. 44 Carbon C 60.33 Hydrogen H' / 3.35 Oxygen OY 9.95 Nitrogen N' 0 0. 69 Sulphur S' 0.41 Grindability 56 Deformation temp. t, : 1130 Softening temp. tz C 1160 Fusing temp. t3 C 1210 Reference ash analysis SiO2 -. 36.71 A1203 % 13.99 Fe203 5 11. 36 Na2O ye 1.23 K20 %4 0.73 CaO %4 22.92 MgO % 1.28 8 _  The power plant is located on the northern bank of Changjiang River, directly ac- cessible by ocean vessels of over 10, 000 tonnage class. It is therefore very ideal tc transport the coal by water in making full use of this 'Golden Waterway4'. The equip- ment and some of the materials can also be shipped to the site via waterway. Shanghai Ocean Shipping Bureau has stated that its transportation capacity can fully satisfy the fuel demand by the plant. The power plant will consume up to;4)miWlion tons of coal each year, and the shipping fleet will mainly consist of large -sized shallow draughl vessels of 35,000 tonnage class, and also some i6,000-25,000 tonnage class vessels. The site is about 13km to the Grade I highway from Nanjing to Yangzhou. A high -way connecting the plant site to it is now under construction by Yangzhou Municipal Government. Therefore, the site is very conveniently located for land and water traf- fic. 9  4,. i - . - Chapter 3 Engineering Analysis 3. 1 Water source and water supply system A direct flow unit system will be adopted for supplying water to the plant. The water source will be the Changiiang River. Each of the 600MW units requires a water supply of 20. 18m3/s for its cooling and fpr the consumption of the auxiliary systems I. and other purposes. The total water demand by both units in Stage I will be 40. 36m3/ s. Changjiang River has an annual average flow of 28200m'/s and a minimum flow of 462Om3/s, being able to fully satisfy the water demand by the plant. The water de- mand balance diagram, is shown in Fig. 3-1. Each unit will be provided with a mushroom shaped water in-take of 9. 5m in di- ameter (where the river bed elevation is -15m), and the water in-take flow will be controlled at 0. 2-0. 3m/s. A screen will be provided at the head of the water in-take to stop most of the floating substances and small fishes and shrimps. It can not only reduce the mechanical damage to fishes, but also ensure the safe operation of the pow- er plant. A circulating water pump house will be provided for Stage I project. Each unit will be equipped with two circulating water pumps, one self -flow water pipe, one pressurized master pipe and one reinforced concrete water discharge channel. 3. 2 Water discharge and treatment system Water to be discharged from the power plant mainly consists of chemical waste water, circulating water, living sewage, coal yard water and ash sluicing water. The waste water discharge amount of Stage I project is listed by categories in Table 3-1. 1. Chemical waste water A special chemical waste water treatment shop will be provided in the power plant to collect and treat all kinds of chemical waste water produced by the plant, and dis- charge it into Changjiang River after the discharge criteria have been satisfied. The waste water treatment system will be constructed once for all for the planned final ca- pacity of the power plant. Its total area will be llOXllOm2, with an annual treatment capacity of about 220, OOOm3. The process flow of the chemical waste water treatment system is shown in Fig. 3 -2. 10  CW PTotal Plant ra 3Water arg~~~~~~~~~~~~~~~~~~~~~o bi eoee erce8lIerdhrwalr =tr' wat ongwae 4-E4 t.11 W ater D e m and B alance DiAg ra m ( unit,~ ~ ~ ~ ~ ~~~~~~~  v j 13~~~~~~~~~~~~~~~~~~~~~' - - . 0~ \ W1_QX4, (- - - Fig 2 G , _iangangSit j N~~~t  -1 E 4-. waste water only requiring pH adjustment _. collecting . _ tl~I pond... waste w erln- oancoagulation neutra- clean 4 discharge after waste water requiringj o idton removal of heavy metal ioLs a justment & cc clarifier lizingb' water meeting criteria I. -_____________ ~ ~ ~ ~ ~ tan . an effluent from boiler acid cleaning slurry slurry to ash yard with ash water *f 5X at Lon *@ " . S~~~~~cnce. dwa trtOn eringlb pll adjusted to 7. 2-8 and then sent to burning system, Fig. 3-2 Waste water Treatment System Flow Diagram I~~~~~~~~~~~~~~~~~~~2I  The chemical waste water will be treated as follows: Waste water only requiring PH adjustment will be collected in pond # 1, blended evenly with air and sent to the PH adjustment tank where its PH is adjusted to 6-9 by adding acid or alkali, then it will flow into the final neutralizing tank via the mixing tank. The clean water is deliv- ered to the ash flushing system or discharged into the nearby water body. Waste water requiring the removal of heavy tal ions will be collected in ponds #2- #4, pumped to the PH adjustment tank to adjust the PH to 11 by adding alkali, then coagulant will be added and the water will flow into the clarifier tank after coagulation. The clean liq- uid of upper layer will then flow into the final neutralizing tank for netralization with acid or alkali, and be discharged into the nearby water body after it meets the criteria. The slurry settled at the bottom of the tank will be sent to the slurry pump house by the slurry discharge pump and then discharged to the ash yard with the ash water. The organic acid cleaning liquid from boilers will be collected in pond #5, its PH adjusted to 7. 2-8. 0 and be delivered to the combustion system after filtering. 2. Warm discharge The circulating water amount for Stage I project is about 40m3/s. The water will be discharged with the same quality as it was in-taken except that its temperature has been raised by 5-70C. The discharge outlet is located downstream the water in-take, and surface shallow layer discharge will be adopted. The bottom of the discharge structure will be at an elevation of -3. Om. An arc shaped diffusion pond with a radius of 30m will be provided at the discharge outlet and a weir of sector type at the outlet of the pond. When the river is at low water level, the discharged water will be basically at the same level as the water body surface, so that the flow is smooth with little blending, easy to form a stratified flow. When the river is at high water level, the dis- charged warm water will be. lifted becaused of the function of the sector type weir, so that it will spread farther on the upper layer of the water body. 3. Living sewage water The Stage I project will have a staff of 1700 people, and the living sewage water will be about 135t/h, of which about 20t/h needs to be collected and treated before discharging. The plant is provided with a sewage water treatment station, where bio- logical treatment will be adopted. The sewage water will be treated via primary sedi- ment pond, exposure pond and secondary sediment pond to reach the criteria before be- ing discharged. 4. Ash water and slag water 14  i. - - The 2X600MW units of the project will produce slurry of 360m'/h (at 25-30% weight concentration) and ash and water mix of about 700m/h (at 1: 6-7 ash to wa- ter ratio). Hydraulic ash handling system with ash and slag separated will be tentative- ly considered for the feasilibility study phase. After sediment and natural evaporation on the ash yard, the remaining ash water will be recovered by pump for reuse in ash flushing. Closed loop circulation will be adopted for both ash water and slag water, and they will not be discharged into the environmental water body. - r 5. Coal yard runoff ' In case of precipitation, the rainwater permeating downwards from the coal heaps will result in the coal yard rainwater runoff. Therefore the design includes fences on both sides of the dry coal yard and runoff ditches on both ends of the open coal yard leading to the coal sediment pond. These will be effective to ensure that the coal water will not overrun the coal yard and flow everywhere. Under normal conditions, the rainwater containing coal can reach the discharge criteria after four hours of sediment and can be discharged directly when it is accepted through analysis. If it is still not ac- ceptable, it will be sent to the waste water treatment system for further treatment. 6. Oil-contaminated waste water The oil -contaminated waste water from the oil tank area, the oil pump house, etc. will be delivered to the oil collecting pond, first via the oil isolation pond to re- move the floating oil and then via the water-oil separator. The water is discharged in- to the nearby water body after reaching the criteria and the floating oil can be recov- ered for reuse. 7. Effluent from boiler acid cleaning The boiler should be cleaned once every 2-3 years with citric acid. Each cleaning will produce an effluent of about 2000m3. This waste acid will be disposed of by com- bustion, with the following process flow: Wste water F combustion Bunn I I I chamber I I cid, alkali Fig. 3-3 Process Flow for Treatment of Boiler acid cleaning Effluent 15  Table 3-1 Power Plant Waste Water Discharge Description Discharge Mode Disposal methods amount Chemical Routine waste water 402m'/d Continuous waste Treated in collection water Occasional waste water 71908m'/a intermittent shallow surface dis- Warm water discharge 40m'/s continuous charge from open - - .__________ ditches offshore 2 sediments and 1 Domestic sewage 20t/h continuous exposure Enclosed circulation Ash sluicing water 360m'/h continuous for repeated use Sediment and clarifi- Coal yard runoff little intermittent cation In sediment _ . pond Boiler acid cleaning effluent 2000m3/time intermittent Burning of citric acid 3. 3 Air quality control system 1. Flue gas pollutants discharge amount Table 3-2 Flue gas pollutants discharge amount Pollutants Stage I capacity Planned capacity 1 X 600MW 2X600MW 4X600MW Hourly dlscharge SO2 1.28 2.56 5. 12 (t/h) T. S. P 0.263 0.526 1.052 Annual discharge SO2 7680 15360 30720 (t/a) T. S. P 1578 3156 6312 The discharge amount of the above-mentioned pollutants are calculated using the following parameters: Coal consumption: Bg=250t/h (one boiler) Coal low calorific value. Q6w=5445 KCal/kg Ash content: A=11. 0% Sulphur content: S'=0. 41% Mechanical loss in incomplete burning: q4=1. 0% Fly ash: a= 0. 9 S02 discharge coefficient: K =0. 85 16  Dust removal efficiency: Tk=99% Desulphurization efficiency: Tso: = 0 2. Control measures- on flue gas pollutants In China, the main items to be controlled to reduce the atmospheric pollutants from fossil-fired power plants are SO2 and the flue gas dust. The control is based on the following principle: to take effective measures to purify the flue gas to control the total amount of discharge, and to make full use of the self-purification power of the atmosphere in diffusion and dilution to reduce the impact of the atmospheric pollutants to the ground environment. Therefore, the following control measures for flue gas pollutants will be adopted for the said project. 1) The plant will use the high quality coal from Shenfu-Dongsheng, its sulphur content is 0.'41%, ash content 11% and low calorific value 5445KCal/kg. The S02 and dust discharge from the power plant will be low. Meanwhile, as this coal has a high content of calcium oxide, there will be a desulphurization of about 10% during the burning as estimated by experiments. But in the calculation, it is still considered Tso= 0. 2) According to the calculation, the precipitators with efficiency as high as 99% can satisfy the discharge requirements of both China and the World Bank. For this pro- ject, high efficiency four-field electrostatic precipitators will be used for flue gas pu- rification, and the dust removal efficiency will be over 99%. 3) According to the recommendation by the environment protection authority, a double -tube stack will be shared by two boilers in this project. The stack for this project will be 240m high and the gas flow speed at the outlet of the stack is 25m/s, about 3. 5 times the wind speed at that point (7. lm/s). The effective plume rise of the flue gas will be up to about 600-800m. There- fore, the flue gas pollutants can be sufficiently diffused and diluted in high atmo- sphere. 4) The flue gas automatic monitoring system will be set up. This system will be installed in the flue duct for quick and direct understanding of the discharge status of atmospheric pollutants from the power plant and collection of long term statistic data. The concentration of SO2, NOx and flourides in the flue gas and the gas temperature and turbility will be monitored. The monitoring results will be displayed and recorded on the environmental monitoring panel in the central control room of the power plant. 5) The emission of NOx from the power plant will be controlled by changing the burning mode of the furnaces. 3. 4 Ash handling system 17  The ash and slag will be handled separately in this project to create conditions for the multi-purpose utilization of ash and slag. The ash system will have two units for Stage I, each for lX 600MW capacity; the slag system will be one unit for 2X600MW capacity. The system is provided with a buffering water pond for recovering the cool- ing, overflow and flushing water in the plant ash and slag system. This will reduce the effluent discharge from the plant ash and slag system and also reduce the make-up water demand by the system. 1. Ash handling system [ Ash will be conveyed pneumatically in the plant and hydraulically out of the plant. To facilitate the multi-purpose utilization of fly ash, each boiler will be provided with a coarse ash storage and a fine ash storage. Ash from the air preheater and the No. 1 field of the precipitator will go into the coarse,storage and the remaining (from fields Nos. 2,3 and 4) into the fine storage. The dry ash under the storage is added with water in the water mixer before going into the slurry pond, from which the slurry is pumped to the ash yard via pipes. Each boiler will produce 180m3/h slurry at a weight concentration of 25-30%. The ash storage will be preserved with a device for dry ash exit to satisfy the de- mand for dry ash. The device for unloading the dry ash will be provided with protec- tion against ash flying off. 2. Slag handling system This system will be run hydraulically and in intermittent cycle. Stage I project will be provided with one slag pump house, where three pump groups will be installed, with one in operating and two on standby. The 2 pipes to the slag yard will have a in- ner diameter 1,300, with one operating and the other on standby. The amount of slag-water mixture will be 700m3/h, with the water to slag ratio controlled at about 1 : 6-7. When it can be used for other purposes, a slag dewater- ing bin system will be provided. The dewatered slag can be directly delivered to the users with vehicles or ships. After sediment, the slag water can be reused in the slag handling system. 3. Ash yard The power plant will produce about 420,000 tons of ash and slag each year. They will be delivered to the ash yard by hydraulic means via pipes. The ash yard for the Stage I project is located at Shatouhe, 4. 6km to the east of the site. The abandoned river course of Shatouhe will be made use of by building up earth dams of 4-9m high and 500m long at both ends of the river section. Its volume will be 10. 27 million cu. m. , being able to contain ash for 13 years of operation. The 18  abandoned Jiajiang River course to its east will be the Xinba Ash Yard for Stage II. Its volume will be 14. 31 million cu. m. for 18 years use. The ash yard for long term of the plant will be the east section of the abandoned course of Shatouhe River with a volume of 19. 57 million cu. m. These three ash yards have a total capacity of 44. 15 cu. m. and can contain ash for 28 years operation for 4X600MW units. The ash pipes will be 4. 6 -22km long. The slag yard will be located to the south of Xinba Ash Yard, at Shanzhiwei and Fuyuwei, and can contain slag for 28 years of operation. -- Table 3-3 Ash and Slag Discharge Amount 1X600MW 2X600MW Volume T/H T/D lOOOOT/Y T/H T/D 10000T/Y Slag 3.25 71.5 2.11 6.5 143 4.23 Ash 29. 25 643. 5 19. 02 58. 5 1287 38. 03 Total 32.5 715 21.13 65 1430 42. 25 Note: The figures are based on 22 hours of operation per day and 6500 hours of operation per year. 3. 5 Coal jetty works 1. General Coal will be shipped to the special coal jetty by sea vessels. to the powerplant. For this phase of project, a 35000 tonnage class berth will be built and the annual coal un- loading capacity will be about 4 million tons. The jetty will be 33m wide and 232m long, and is connected with the bank by a leading bridge, which is 13. 5m wide and 160m long. The jetty will be equipped with two bridge clam type unloaders each hav- ing a rated output of 1200t/h. The unloaded coal will be delivered to the transit station on the shore via the belt conveyor and then into the coal yard or the coal mills. The coal yard will be equipped with two cantilever stacker-reclaimers, and the max. stacking output will be 3000t/h and the reclaiming output 1000-2000t/h. The coal yard will be 320m long and 180m wide and the coal will be stacked to a height of lOm, so that the coal inventory will be about 280,000 tons. The number of operatable days of the coal jetty is calculated on the basis of rele- vant data and statistic analysis, taking into account the number of strong wind and heavy wave occurrances and the delays caused by rains, fog, thunderstorms (convert- ed into days), less the number of days of concurrent occurrances, then the affected 19  number of days over the year is 33. 4 days. So the number of continuous operation days of the jetty is 320 days per year. 2. Analysis of contamination factors 1) Atmospheric contamination source The coal jetty will unload about 4 million tons of coal every year. The main atmo- spheric contamination source in the jetty area comes from the flying dust during coal unloading and stacking and reclaiming. According to investigation data on jetties of th-e same type in China, the flying -off durifig coal loading and unloading accounts for about 0. 1% of the total coal amount if no dust prevention measure is taken. When dust suppression measures such as water sprinkling are taken, the flying-off can be reduced by 80-90%. It has been estimated that the coal dust flying-off from the jet- ty and the coal yard will be about 800Q tons per year. 2) Water contamination source a. Oil-contaminated water This water mainly comes from vessel engines and machines and tanker bins and operational oil leakage and accidental oil overflpw. According to an investigation made by Shanghai Habour to several thousands of vessels in berth, a 500 tonnage class ves- sel will produce 2-3 tons of oil-contaminated water every day, a 1000-5000 tonnage class 3-5 tons and a vessels of over 10000 tonnage class 10-15tons. The oil concentration in such water is normally 1000-10000ppm, and the average value is 3000 ppm. According to the "Interim Regulation on Prevention of Coastal Water Contamina- tion of PRC", all vessels over 500 tonnage class should be installed with water -oil separator (s ), and it is forbidden to discharge oil or oily mixture into the water of berth area, the discharge during sailing must not exceed 60kg/SOOm, with an oil concentra- tion less than lOppm. In this jetty area, it is specified that the oil concentration in the discharged oil-contaminated water should be less than l0ppm. b. Coal-contaminated water Such contaminated water mainly comes from washing the unloading area and the unloading bridge. The major pollutants are the suspended solids, with concentration of about 500-1400mg/l. After being treated in the sediment pond, the concentration can be lowered to a level specified by the state for emission. c. Coal powder falling into the river during unloading During unloading, a certain quantity of coal will fall into the river. That of large particle size will settle into the river bed around the jetty area, and that of smaller sizes will remain in suspended status in the water to increase the concentration of the sus- 20  pended matter in the water body. d. Noise Coal unloading and conveying equipment will produce some noise during the oper- ation. It is estimated tht at about 1 meter distance, the noise level will be around 74- 80dB(A). 3. 6 Power Transmission lines At present, unit connection is recommended and it can be linked to the 500kV busbar after voltage stepping -up. Two 500kV transmission lines will be erected to r reach Jiangdu Substation. The transmission lines, 28km long, will pass over a number -. of villages, farmland and highways at a height of above 15 meters. Along the route, 70 towers will be erected, each occupying an area of 16X16m2. HV transmission lines will generate AC electric field, electromagnetic field and, in rare cases, produce corona field. So far, no obvious evidence is available which can prove that such fields are significantly harmful to human health, animals or crops. . _ 21  Chapter 4 Investigation on Present Environmental Conditions 4.1 Natural Environment of site area 1. Geological and topographic features The region where the project site is located belongs to the second structure ol Yangtze sub-platform, i. e. on the northern edge of Lower Yangtze Belt of the folded r strata. The areas near the site have kept rather complete stratas of various eras, from Proterozoic era to Genozoic Era, mainly consisting of sedimentary and magmatic rocks of various types. Topographically, the region consists of low hills and downs. The site area is located on a relatively stable geological block surrounded by the Changjiang Fracture, Wuxi-Suqian Fracture and Chu-sha Fracture. It is positioned neither on a considerable active fracture nor on the intersection of these fractures. 2. Seismology The site is on the Yangzhou-Tongling seismic belt. Most of the 28 recorded de- structive earthquakes took place in the Yellow Sea, the northeasat section of the said belt. Earthquakes on land were widely scattered, including 11 ones with a magnitude of 6-6. 75 on Richter Scale. No earthquake above 4. 75 magnitude has taken place on the site area in history. The site area was affect6d by strong earthquakes in remote or medium distances, but the intensity has never exceeded 7 degree. On the basis of the comprehensive analysis of the geotectology, the historica] earthquakes and the regularity of earthquake activities at the present time of the site area, the Jiangsu Provincial Seismic Bureau has determined that the basic seismic in- tensity of ihe site area in the future 100 years will be 7 degree. 3. Surface hydrology 1) Runoff The Changjiang River is the largest river in China, and its average flow for years is 28200m3/s, with the max. flow 92600m3/s and the min. flow 4620m3/s. The river section by which the site is located is the Luwei curved course of Zhen- jiang-Yangzhou Section, about 13. 5km in total length. The water depth is normally between -10 and -4. Om. Because of the construction of the bank protection works, the change of river bed and banks has been basically controlled, and relatively stable deep water lines have been formed. According to the data from Datong Station (303km upstream Biangang): 22  Average flow for years 28200r3/s Max. flood peak flow (Aug. 1, 1954) 92600m3/s Min. dry season flow (Jan. 31, 1979) 4620m'/s Average flood season flow for years 40200m3/s Average dry season flow for years 12400m3/s Average sand content for years 0. 533kg/mr Average sand conveying amount for years 469 million ton/Y 2) Tide level * Biangang Site is about 280km to the estuary of Changjiang River and is within the tide-affected section from the estuary. The hydrologic characteristics of the river sec- tion is mainly controled by the runoff upstream and at the same time affected by the tide from the estuary, therefore it is a tide-affected river section. The tide here is oi irregular semidiurnal mixed type. It takes about 3- 4 hours to rise and about 8 - hours to ebb. The river section is basically single directional flow and is of fresh wa- ter. According to data from hydrological stationfor years of observation, the tide char- acteristics of this river section can be described as follows: Table 4-1 The Characteristic Tide Level Values at Zhenjiang and Jiangyin Hydrological Stations (YSD) Description Zhenjiang Station Jiangyin Station Max. high tide level 6. 49m (Aug. 18,1954) 4. 84m (Aug. 20,1974) Min. low tide level 0. 65m (Jan. 22,1959) -1.11m (Jan. 22,1959) Average high tide level for years 3. 08m 2. 13m Average low tide level for years 2. 23m 0. 50m Max. tide difference for years 2. 32m (Jan. 30,1979) 3. 39m (1959) Min. tide difference for years 0. OOm (Sept. 6,1969) Om (1972) Average tide difference for years 0. 96m 1. 55m 3) Water temperature There is no available actual measured data of water temperature for the river sec- tion of the site, the following table gives the actual measured data from Jiangyin Sta- tion (a temporary station) of Changjiang River for reference: 23  Table 4-2 Month 1|1|212|3 4 5 1 6 18 6|9 |8 |111|2 .. _ _ _ ~~~~~~~~~~I 1111111l i Water temperature 'C 6.7 6.2 9.2 15. 0 21.1 25.1 27. 328. 5 25. 3120.5 16. 0 10.1 Average for years 17. 6C Max. daily average for years 31. 0OC Min. daily average for years 3. 7C Daily average water temp. for 10% frequeney 29. 5*C (June 16-Sept. 15) 4) Climate features The region is located at the north edge of the subtropic zone, characteristic of warm and dump monsoon climate and four clearly distinct seasons. In winter, the re- gion is under the control of strong anticyclone from the north; the atmospheric circula- tion is generally stable, with the northward current as the prevailing one. In summer, the region is under the control of subtropical high pressure; the weather is generally hot, with southeast wind as the prevailing one. The prevailing wind for the whole year is east wind. There are plum rains from mid-June to early or mid-July each year. After the plum rains, the region will be under the control of the southeast mansoon from the Pa- cific subtropic zone, with very hot weather. And about 80% of the thunderstorms take place during this period, also with typhoons. The following table shows the statistic data from Yangzhou Meteorological Sta- tion. Table 4-3 Climate Characteristics of Site Average annual air temperature for years 14.9 C Extreme maximum air temperature 39.1 C Extreme minimum air temperature -17. 71C Average air pressure for years 1015. 9hpa Average RH for years 79% Average annual precipitation for years 1039. 8mm Average wind speed for years 3. Om/s Max. average wind speed for years 20. Om/ Prevailing wind direction for years E 24  5. Ecoloical environment 1) Living things on land Within the assessed area, there are no rare animals or plants. The main animals are pig, buffalo, chicken, duck as well a few kinds of birds. The main plants are crops such as grain, cotton, rape, mulberry, vegetables as well as some other economic plants. Also growing near the project site are the green tree belts in Yangzhou, Zhen- jiang and on the scenery spots of these two cities. 2) Living things in water a. Fishes According to the investigation data obtained by Jianbi Power Plant, which is by the same river section as this project, the main aquatic products here are saury and shad. The Fishery Township of Zhenjiang is one of the main fishery production teams, and their aquatic product yields for years are shown in the following table. Because of various factors, such as construction of waterlocks and dykes in rivers and lakes, the over-fishing which has exceeded the regeneration capacity of the re- sources and industrial pollution, there is a decreasing tendency in fishing yield in this river section. Furthermore, the catches also show that there is an increasing amount in small fishes and shrimps of low value and a sharp decreasing amount in migrating and large economic fishes. Investigations also show that there is no spawning field near the site, and fish eggs, if found, are normallyin the vicinity of 20 meter to the bank. b. Plankton The plankton in this river section consists mainly of three species: cyanophyceac, cyano-chlorophyceae and diatom, according to the sampling data from three river sec- tions of Longmenkou, Jianbi Power Plant and Qinglongshan. No benthos or water-growing vascular bundle plant has been found. Only reed is found in part of the waterside area. 25  Table 4-4 Fishing Yields of Fishery Township, Zhenjiang Unit: ton Variety Year Total yield Saury Shad Crab 1973 397 193 60 1S 1974 345 91 104 15 1975 274 91 22 24 1976 320 lOS 15 14 .7pi 1977 365 140 51 40 1978 290 102 18 6 1979 218 84 10 23 1980 276.8 135.15 3.25 2.6 1981 209.8 103.7 11 28.1 1982 272.5 170.9 1.1 28.9 1983 269.8 191 4.65 11.5 _ _ 1984 324.2 218.9 0.7 18.05 1985 275.8 169.3 0.25 9.3 1986 230 195 0.025 5 4. 2 Social environment Investigation 1. Yangzhou Yangzhou, where the power plant will be built, is located on the north side of the Changjiang River Development Belt. Under the municipal administration are six coun- ties and four county-level cities, totaling 12,431km2 and supporting a population of 9. 24 million. In recent years, Yangzhou is developing rapidly and opening ever wider to the outside world. Its foreign trade, electronics, chemistry and building material fabrication are all growing. The various counties under the municipality are becoming the bases of producing grain and meat for the whole Jiangsu province. In 1991, the to- tal industrial-agricultural output value reached 43. 9 billion RMB yuan, including 37. 1 billion for industries and 6. 8 billion for agriculture. Its total industrial-agricultural output value is expected to be 59. 4 billion yuan and 87 billion yuan respectively in 1995 and 2000. The total area of cultivated land in Yangzhou is 1. 243 million hectares, in- cluding 353, 000 hec. in plain area, 534, 000 hec. in embanked low lands, 104, 000 hec. in hilly area and 239, 000 hec. as water surface. According to the statistic data of Yangzhou Municipal Government at the end of 1991, there were 6209 enterprises above township level, including 9 of large size, and 26  the remaining being medium or small sized. Of its whole industry, 52. 6% falls into light category and 47. 4% into heavy category. The employed population of the whole municipality is 5,145,600 people, including 566,300 working in state-run entities and institutions, 506,200 working in collective entities and 4,030,600 rural labour. The average salary of staff working in various in- dustries is 2054yuan/year and the net average income of farmers is 883yuan/year. The urban area of Yangzhou is about 11km to the north of the power plant, and has a total area of 148 sq. km. and a population of 408,400. It is a famous historical r and cultural city of the country. Shouxihu Lake scenery zone is the well - known scenic point of tourism, and is located to the northwest of city proper, about 15km to the plant area. Other scenic points in the city are Pingshantang Museum, Monk Jianzhen Memorial Courtyard as well as some other places. Bali Township of Hanjiang County, where the project site is located, has a popu- lation of 21, 000, with a population density of 700heads/km2. The people there are mainly engaged in farming and poultry or aquatic breeding. In recent years, the town- ship and township-run enterprises have been developing rapidly. In 1991, its total in- dustrial-agricultural output value was 84. 5 million RMB yuan, including 65 million yuan from industry. The main crops are rice and wheat. 2. Zhenjiang Zhenjiang, separated from the Biangang Site only by the Changjiang River, has been an important communication junction and a famous commercial port in the lower reaches of Changjiang since ancient times. Now it has 2 districts, 3 counties and 1 county-level city under its jurisdiction. It has an area of 3843 sq. km. and a popula- tion of 2.6 million, including an urban area of 215 sq. km. and an urban population of 460,000. Since 1985, Zhenjiang has been named by the state as the major tourist city and the famous historical and cultural city of the state. In 1987 Zhenjiang Habour was officially opened to foreign vessels. In 1988, the State Council approved Zhenjiang as an economic opening zone in the coastal area. Its industrial-agricultural output value in 1990 was 13. 2 billion RMB yuan, 5110 yuan per capita. The annual average salary of city staff was 2116 yuan and the net average income of farmers was 894 yuan. There are low hills lying from east to west in the south of Zhenjiang, most of them being round shaped peaks. Its northern part along the Changjiang River is a belt of alluvial plain, a sheetwash area by Changjiang River where, from west to east, Jin- shan, Beigushan and Jiaoshan stand upright by the river, forming a magnificent view. 4. 3 Status quo of environmental quality In order to understand the background environmental values of Yangzhou and 27  Zhenjiang, which are within the space limits of environmental assessment for the pro- ject, and to get a clear view of the status quo of contamination and the enviromental accommodation capacity of the plant area, Yangzhou Environmental Monitoring Center conducted the winter atmospheric background experiment and noise background exper- iment of the site in Jan. 1989, and the water quality experiment for the mean and dry seasons for the river section near site in Jan. and March, 1989, and also prepared the report on "Status Quo Investigation of Environmental Quality and Assessment for Yangzhou No. 2 Power Plant Project" (Apr: 1989) by collecting environmental investi- F gation and monitoring data of Yangzhou and Zhenjiang. In the present assessment, monitoring data for the status quo of environment in Yangzhou and Zhenjiang (1991) were collected. 4. 3. 1 Status quo of Atmospheric environmental quality 1) Yangzhou urban area a. Atmospheric pollution sources The atmospheric pollution of Yangzhou uf ban area was caused mainly by burning of coal. The coal consumption in this area is 560,000 tons per year, of which over 88% was consumed by industry. The main coal consuming enterprises in Yangzhou are the old power plant, iron and steel works, pesticide plant, the printing and dyeing mill and the cement plant. These five enterprises consume about 70% of all coal by the whole urban area. The total amount of atmospheric pollutant (SO2, NOx and TSP) discharge from the urban area of Yangzhou is 31199 tons per year, including 24812 tons from burning of fuels in industries, 4933 tons from civil coal burning, 1435 tons from combustion of fuels in comnmunications and transportation. These are summarized in Table 4-3-1. The main sources of pollutant (SO2, NOx and TSP) discharge in Yangzhou Urban area are 16 enterprises, whose equivelant pollution load is 132,175. 5 tons/year, con- stituting 81. 44% of the total of the urban area. The waste gas discharge from these 16 enterprises is given in Table 4-3-2. b. Status quo of atmospheric environmental quality The monitoring of atmospheric environmzent in Yangzhou has been performing for years. The monitoring points are distributed in five functional zones and their locations are shown in Fig. 4-3-1. The atmospheric monitoring data for 1991 are given in Table 4-3-3. According to the data of averaged values taken from various monitoring points in functional zones, only the TSP daily average values of winter and summer exceed Class II criteria in the national atmospheric quality, mainly due to the dust raised by vehicles 28  at points in traffic areas, where the daily average value in winter exceeds the Class II criteria by 1. 3 times, while the TSP at each of the other points can basically satisfy the , Class II criteria. The daily average value of S02 at each of the monitoring points in the city has reached the Class II criteria. In winter, because more coal is consumed, the daily average value of SO2 is 0. 105mg/Nm3, at 70% of the Class II criteria. In all oth- er seasons it has approached or reached the limit of Class I criteria. The NOx in the city is low, the daily average value at each of the monitoring points has reached the limit of Class I criteria except in winter when the value is 0. 059mg/Nm', at 59% of 1 Class II criteria. It can therefore be known that in Yangzhou urban area, the atmo- spheric pollution is mainly due to TSP. Each of the pollution factors reaches its maxi- mum value in winter. 2) Zhenjiang urban area a. Atmospheric pollutant sources The total coal consumption of coal in Zhenjiang urban area is 5. 36 million tons per year, including 5. 17 million tons for industry, and 0. 19 million tons for residents and living purpose. Jianbi Power Plant alone consumes 77. 11% of all coal consumed by the city, and is the extra-large coal consumer in the urban area. The total amount of atmospheric pollutant discharge from the urban area of Zhen- jiang (for three factors of SO2, NOx and TSP) is 338, 000 tons per year, including 320, 900 tons asa industrial waste gas, 14,900 tons from coal for living purpose, and 2190 tons from traffic waste gas discharge. These are summarized in Table 4-3-4. There are 13 main industrial waste gas pollutant sources in the urban area, and their discharge conditions are given in Table 4-3-5. b. Status quo of atmospheric environmental quality The routine monitoring of atmospheric environment for the urban area of Zhen- jiang was started in 1982. In 1987, six monitoring points were set up in different func- tional zones. Their locations are shown in Fig. 4-3-2. The results of atmospheric environment monitoring in 1991 are given in Tables 4 -3-6 and 4-3-7. 29  Table 4-3-1 Statistics on Atmospheric Pollutant Discharge in Yangzhou Urban Area Unit: ton/year So2 SOx T.S&P Type of Discharge Equivalent Equivalent Equivalent Total EPL proportion Type ofDischargeqplutivalnt Discharge pollution Discharge pollution of pollutant in EPL pollutant source amount load (EPI,) amount load (EPI,) amount load (EPui (ton/year) (n) (ton/year) (ton/year) (ton/year) (ton/year) (ton/year) (ton/year) a G asoline 12.86 85.8 920.17 9201.7 / /1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~14247. 3 7. 13 ? )Diesel oil 34. 17 277. 7 486.21 4682. 1 / / Coal for daily use 1568.63 10457. 5 227. 14 2271. 4 3137. 25 10457. 5 23186. 4 11. 61 Waste gas from industrial fuel 14182.60 94550.6 4847.70 48477.6 5782.6 19278.5 162306.0 81.26 Total 15798.26 105321.7 6481.22 64812.2 8919.85 29732.8 199739.7 100 , , *--t1 '- I _ tri~~~~~~~--' t f * . i .^ * u 1 ... W~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~.  Table 4-3-2 Main Industrial Waste Gas Pollutant Sources (Enterprises) in Yangzhou Urban Area SOl SO, T.S.P Equivalent Equivalent Equivalent Total EPL proportion Description of Discharge Discharge Discharge Rank Trade pollution pollution pollution of pollutant in EPI- pollutant source amount amount amount by EPL load (EPL) load (EPL) load (EPL) (ton/year) (%) (ton/year) (ton/year) (ton/year) (ton/year) (ton/year) (ton/year) Power plant Electric power 5706.93 38046.2 2072. 75 20727. 5 1141- 38 3804. 6 62578. 3 38. 56 1 Pesticide plant Chemical 2468. 48 16456.5 896.55 8965. 5 493. 69 1645.6 27067. 6 16.68 2 Printing and dyeing mill Textile 1123.95 7493.0 408.22 4082.2 224. 79 749.3 12324. 5 7.59 3 Cement Plant Building materials 431. 50 2876. 7 65. 52 655. 2 731. 04 2436.8 5968. 7 3. 68 4 Iron and steel works Metallurgy 286. 29 1908.6 57.13 571. 3 230. 64 768. 8 3248. 7 2.00 5 DongFeng Brick and Tile Factory Building materials 176.80 1178.7 28.08 280.8 335. 60 1118.7 2578.2 1.59 6 Paper mill Paper making 209. 30 1395. 3 76.00 760.0 80. 90 269. 7 2425. 0 1. 49 7 Subei Rice Processing Mill Foodstuff 193.03 1286. 9 70.10 701.0 77.25 257. 5 2245. 4 1. 38 8 Foodstuff Mill Foodstuff 177.30 1182.0 68.00 680.0 96.00 320.0 2182.0 1.34 9 Pharmaceutical factory Pharmacy 216.00 1440.0 35. 49 354. 9 86. 40 288.0 2082. 9 1. 28 10 Phosphate fertilizer plant Chemical 287.79 1918. 6 4.01 40. 1 1. 27 4. 2 1962. 9 1. 21 11 Qingfeng Art Paper Mill Paper making 136. 60 910. 7 49. 61 496.1 53. 82 179. 4 1586. 2 0.98 12 Glass factory Building materials 98.09 653. 9 84.07 840. 7 17. 66 58. 9 1553. 5 0.96 13 Synthetic chemical plant Chemical 127. 75 851. 7 52.05 520. 5 44. 42 148.1 1520. 3 0. 94 14 No. 3 Chemical Plant Chemical 125.00 833.3 45.40 454. 0 63. 00 210.0 1497. 3 0.92 15 Cement product factory Building materials 110.00 733.3 39. 95 399.5 66.00 220.0 1352. 8 0.83 16 Total 11874.81 79165.4 4052.91 40529. 1 3744.29 12481.0 132175. 5 81. 44 31  ,~~~~~~~~~~~ X j A I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  - L.- Table 4-3-3 Data from Routine Monitoring of Atmospher. over Yangzhou City (1991) unit: mg/Nm3 Annual Daily average Functional zone Item average Winter Spring Summer Autumn No. 1 SO2 0.055 0.101 0.035 0.027 0.058 I Cleaning zone NOx 0.047 0.057 0.034 0.013 0.036 (Bureau of Enviromental Protection) T * S * P 0.198 0.295 0. 153 0.144 0. 918 No. 2 SO2 0.038 0.069 0. 016 0.026 0. 042 Chemical Industry zone NOx 0.027 0.044 0. 021 0.013 0.030 (Chemical Plant) T * S * P 0.265 0.258 0.175 0. 144 0.297 No. 3 so0 0.079 0.124 0. 065 0.026 0. 087 Residence zone NOx 0.040 0.069 0.033 0.013 0. 036 (No. 1 Clinic) T * S * P 0.204 0.270 0. 168 0. 330 0. 207 No. 4 S02 0. 076 0. 110 0.094 0.031 0.070 Commerce zone NOx 0.033 0.039 0.045 0. 016 0.030 (Post office) T * S * P 0.311 0.363 0.254 0.255 0.375 No. 5 S02 0. 062 0.121 0.040 0.041 0.062 Traffic zone bNOx 0. 066 0.094 0.054 0.059 0. 059 (Yangzhou Machine Plant) T - S - P 0.481 0.689 0.249 0.672 0.317 No. 6 S02 0. 066 0.107 0.042 0.062 0.053 Industry zone NOx 0.041 0. 051 0.020 0.023 0.027 (Baocheng Factory) T * S * P 0.230 0.249 0. 170 0.271 0.233 SO2 .063 0. 105 0. 049 0.036 0. 062 City average NOx 0.036 0. 059 0.035 0. 013 0. 036 T * S P 0.281 0.354 0.195 0.303 0.271 33  9L~~~~~~~~~~~~~~~~~~~~~~~~~~i X~~~~~~~~~~~~~~~~~ '-.1; A- -- - )w s- -- @ 9 > w-v/ * ,l \ \ v >f~~~~~~~~~~~~~~~~~~~~ ' * . ' ' W0-n t 5 r /'2 ,~~~~~-P *a M l .. 8 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ .  Table 4-3-4 Statistics on Atmospheric Pollutant Discharge in Zhenjiang Urban Area Unit: ton/year SO2 Sox T.SXP Equivalent Equivalent Equivalent Total EPL proportion Type of D)ischarge pollution Discharge pollution I)shre pluin oplutt inE. pollutant source amount load amount DlschIon amount pollution of pollutant in EPL (ton/year) load (EPL) (ton/year) load amont load (EPL) (ton/year) (ooa ( (ton/year) (ton/year) (ton/year) e.n H Gasoline 10. 69 71. 3 764. 49 7644. 9 21573.4 1. 19 n Diesel oil 96. 43 642. 9 1321.43 13214. 3 Oil for daily use 4750. 00 31666. 7 687. 80 6878. 0 9500. 00 31666. 7 70211. 4 3. 86 Waste gas from Waste gas from 115324. 08 768827.2 40740.94 407409.4 164829.98 549433.3 1725669.9 94. 95 industrial fuel Total 120181.20 801208.0 43514.66 435146.6 174329.98 58100. 0 1817454. 7 100.0  Table 4-3-5 Main Industrial Waste Gas Pollutant Sources in Zhenjiang Urban Area SO. SOx T,S,P Equivalent Equivalent Equivalent Total EPI. proportion Description of Discharge Discharge Discharge Order pollution pollution pollution of pollutant in EPI. pollutant source amount amount amount in EPI load (EPIL) load (EPI.) load (EPL) (ton/year) (%) (ton/year) (ton/year) (ton/year) ; (ton/year) (ton/year) (ton/year) Jianbi Power Plant 103335. 0 688900 37531. 27 375312. 7 143215. 9 477386.4 1541599. 1 84. 86 1 Cement plant 1840. 00 12266. 6 299. 00 2990.0 11500. 00 39933. 3 53589. 9 2. 96 2 Iron and steel works 275. 86 1838. 1 142. 92 1429. 2 3037. 90 10126. 7 13394. 6 0. 74 3 Paper pulp mill 1145.00 7633.3 415.86 4158.6 458.00 1526.7 13318.6 0.73 4 cn Jianbi Brick and Tile Mill 283 1892. 0 80. 55 805. 5 443. 55 1478. 5 11422. 6 0. 63 5 Dadong Paper Mill 783.95 5226. 3 284. 73 2847.3 313. 58 1045.3 9118.9 0.50 6 Printing and dyeing mill 620.00 4133. 3 225. 18 2251.8 248. 00 826.7 7211.8 0.40 7 Sulphuric acid plant 847. 74 5649. 7 0. 87 8. 7 4. 75 15. 8 5674. 2 0. 31 8 Building material factory 328. 00 2546. 7 108. 00 1080. 0 267. 40 891. 3 4518. 0 0. 25 9 Zhenjiang Quarry Company 288. 60 1924. 0 81.90 891. 0 451.00 1503. 3 4246. 3 0. 23 10 Resin plant 336. 90 2246. 0 95. 60 956. 0 105. 30 351. 0 3353. 0 0. 20 11 Zhenjiang Smeltery 347. 68 2319. 2 54. 5 545. 0 162. 00 540. 0 3404. 2 0. 19 12 Coking plant 174.25 1161. 7 76.79 767.9 351. 27 1170.9 3100.5 0. 17 13 Total 1674151. 7 ! , , 8 i ~~ ~ ~ ~~~-'1 t 1 . t  Table 4-3-7 Statistics of Concentration Values at Each Monitoring Spot Unit: mg/Nm3 SO2 T. S. P No. Location Max. Average Daily average Exceeding Max. Average Daily average Exceeding value value Concentration % value value Concentration % range range Industrial Zone 2 0. 410 0.081 0.019-0.179 10 0. 781 0.320 0. 113-0. 569 15 (Phosphate Fertilizer Plant) Traffic Zone 3 try School) 0. 426 0.081 0.014-0. 225 10 0.623 0.275 0. 126-0. 418 16 X ~~(Meltery School) Industrial Zone 4 (Chemial Ene 0. 255 0. 092 0. 026-0. 162 10 0. 708 0. 296 0. 109-0. 386 11 (Chemical Eng. Institute) Mixed Zone 5 0. 285 0.079 0. 025-0. 177 15 0.863 0.285 0. 176-0. 420 13 (Dashikou ) Mixed Zone 6 0. 364 0.072 0. 018-0. 220 5 0.601 0.271 0. 105-0. 311 8 (No. 6 secondary School) Total 0. 426 0. 081 0. 014-0. 225 10 0. 863 0. 289 0. 105-0. 569 13 l ~~~~~~~~~~r * *.1 r g E