China - Second Beijing Environment Project : environmental assessment (Vol. 2 of 4) : Implementation plan

E-327 VOL. 2 Implement plan of environmental management of the secondary Beijing Environment project of World Bank. Beijing Environmental project office Jan. 2000   Implement plan of environmental management of the secondary Beijing Environment project of World Bank. Beijing Environmental project office Jan. 2000  4 I  Content 1. Environmental policy ............................................................1 2.Environment factor .............................................................2 3. Law, statute and other requirement ............................................................ 3 4. Scheme of environment management ............................................................4 4.1 Construction period ............................................................4 4.1.1 Control of air environment .............................................................4 4.1.2 Control of noise environment ............................................................4 4.1.3 Control of solid waste ............................................................5 4.1.4. Control of desilting of sludge in Qinghe River ................................. 5 4.2 Operation period ............................................................6 4.2.1 Environment management of the water course and sewer system .6 4.2.2 Environment management of wastewater treatment plant ............. 11 4.2.3 Scheme of environment management of boiler house . 13 5. Organizations and duty ....................... 19 5.1. Organizations .19 5.1.1 Liangshuihe watershed and Qinghe watershed .19 5.1.2 Environment management organization for the Boiler Reconstruction Subproject .20 5.2 Responsibility and right of environment management .21 5.2.1. Liangshuihe watershed and Qinghe river .21 5.2.2 Responsibilities of environment management organization for the Boiler Reconstruction Subproject .22 6. Monitoring plan .23 6.1 Liangshuihe watershed and Qinghe sewer .23 6.1.1 Implementation of the monitoring .23 6.1.2 Startup level, proceeding level and target level .23 6.1.3 Monitoring scheme .24 6.2 Gas boiler .31 6.2.1 Construction period ................. 31 6.2.2 Environmental monitoring plan in boiler running period .31 6.3 Evaluation of Monitoring Expense .32 6.3.1 Construction Period ............................ . 32 6.3.2 Operation Period .33 6.4 Reporting of Monitoring Results .33 7. Personnel training .34 8.Information intercommunication .34 9.Recording .35 1 0.Target of sustaining improvements .35  I  After the UN Environment & Development Conference, the attention to the problem of the environment management is being paid in many countries increasingly. Today, strengthening the environment management has been the tide all over the world. The Implement of the environment management and the monitoring plan can provide the assessment program about the action which causes the bad impact on environment and the safeguard on the prevention of environment pollution in technology, method and resource, and rectify the windbag in the environment management in time to make it have more validity and pertinence, and realize the aim of environmental protection. As far as the Beijing Environment Phase II Project with Loan from the World Bank is concerned, its environment management and monitoring plan should be cubic and versatile. The environment management of the projects including the Liangshuihe water system municipal wastewater integral prevention and treatment, the sewer project of Qinghe WWTP, the project of reforming the coal burning boiler into gas-fired are divided time into two parts: construction period and operation period. 1. Environmental policy Beijing, the capital of China, is the center of polity, science, technology, culture and communication. Since reform and opening, all projects have developed quickly. The degree of urbanization has pricked up step by step; The scale of the city has increased; the population of the city has led. The following is caused: The amount of the industrial wastewater, wastewater and coal has added year by year. Because the municipal construction is absent badly, the pollution of the river, especially reaching in the city area such as Liangshuihe River and Qinghe River, is caused. The air pollution has become the hot spot to which the people pay attention. According to the account of the air quality weekly report in 52 weeks of 1998, the air quality in only 8 weeks meets the requirement of environment quality. The environmental pollution impacts badly on the report of the country and the development of the capital. In order to protect the body and heart health of the people and - adapt to the need of the reform and opening and economic construction, the Beijing Government plans to accelerate the municipal wastewater prevention and treatment and the regulation of fuel structure, which can improve the environment, utilizing the load of the World Bank at the aim of improving the environment. (1) The execution of engineering of the project should meet the Beijing Master Plan and the Beijing Environment Master Plan. (2) The executive unit of the project should observe the relative regulation and lawful rule, not destroying the environment and disturbing the residents. l  (3) During the operation period of the wastewater treatment plant and the boiler house, every pollution index should meet the relative standards. (4) A series of the management measures is adopted to prevent expansion of the pollution in Liangshuihe watershed and Qinghe watershed. The operation technology criterion of boiler should be complied with strictly to avoid the pollution accidence. (5) Through execution of various environment management steps, the water quality in Liangshuihe watershed and Qinghe watershed and the odor at both sides is improved continuously. 2.Environment factor The environment factors of the Phase II Project are shown in Table 8.1. Table 8.1 Environment Factor Action Environment factor Environmental impact 1 .Construction (1) Dig of earthwork Soil and air pollution period (2)Material square of Soil and air pollution construction (3)Operation of Noise and air pollution construction machine (4)water course Air and underwater pollution l ______________________ desiltina 2.Operation of the (1 )Odor emitted from Air pollution wastewater construction treatment plant (2)Deposit of the pile of Soil, ground water and air sludge pollution (3)Discharged water Surface water pollution from WVTP (4)Emitting smoke from Air pollution the boiler of WWTP 3.Pipe (1)Leakageof sewer Soil and ground water transportation of (2)New wastewater pollution wastewater Treatment effect of WWTP 4.Coastwise of New wastewater Surface water pollution Liangshuihe River, discharge Qinghe River 5.Pipe (t)Latent leakage Soil and water pollution transportation of accidence Air, soil and water pollution natural gas or man- (2)Explosion event Water pollution made coal gas (3)condensate water Soil and air pollution (4)Ground dig of maintain 6.Burning operation (1)Emission of smoke Air pollution of boiler (2)Pump, air-blower Noise impact (3)Discharge of circle Municipal wastewater water treatment system Air, soil and water (4) Explosion event WWTP, surface water (5)Wash and clear of 2  equipment on the ground 7.Blow and sweep (1)Emission of gas Air, flammability of pipe (2)Mud dregs, rust and Soil and water . other impurity 8.Daily life of (1)washroom WWTP, surface water personnel (2)Living rubbish Garbage Fill-inter factory 9.Equipment (1 )Reduction of fuel Decrease of resource maintain and consumption consumption improve on (2)Lessening of the Mitigation of air pollution technology emission of waste gas Lessening of environment (3)Alleviation of the noise source strength of I noise 3. Law, statute and other requirement The environment action of the project must-observe the relative national, industry, Beijing municipal law, statute and other requirement, including industrial criterion, operation rules and so on. Of these, the special stress is as follows: (1) Law of Environmental Protection of the People's Republic of China (2) Law of Air Pollution Prevention of the People's Republic of China (3) Law of Water Pollution Control of the People's Republic of China (4) Law of Noise Pollution Prevention of the People's Republic of China (5) Law of Solid Wastes Pollution Prevention of the People's Republic of China (6) Discharge Standard of Water Pollutants of Beijing (Proposed) (7) Ambient Air Quality Standard (GB3095-1996) (8) Emission Standard for Odor Pollutants (GB 14554-93) (9) Environmental Quality Standard for Surface Water (GB3838-88) (10) Water Quality Standard for Scenery and Recreation Area (GB12941-91) (11) Groundwater Quality Standard (GB/T14848-93) (12) Integrated Wastewater Discharge Standard (GB8978-96) (13) Standard of Noise at Boundary Industrial Enterprises (GB 12348-90) (14) Standard of Environmental Noise Urban Area (GB3096-93) (15) Noise Limits for Construction Site (GB 12523-90). (16) Emission standard of air pollutant from boiler of Beijing (17) Function division of air environment quality of Beuing (18) Function division of environment noise of Beijing (19) Beijing municipal master plan (20) Design criterion of boiler house (GB50041-92) Besides, various standards will be revised and updated aperiodically with advancement of environment management work in China. So, the relative standards must be searched and replaced every year and the new standard 3  with the duty scale of personnel the scale must be given to all missionary in time. 4. Scheme of environment management 4.1 Construction period 4.1.1 Control of air environment During the construction period, the impact on air environment mainly includes rising dust, toss of transporting vehicle on the way. The life of ambient residents is affected intuitively. The followings should be noticed especially: A. Carry out the measure on preventing dust rise in accordance with construction plan: (a) Sprinkle periodically: two times everyday in summer and autumn. One time is completed before working start in the morning and the other time after launch and before working start. Sprinkling should be done four times, once every four hours, in winter and spring. The amount of sprinkled water should be proper. Sprinkling not only prevents the dust from rising but also avoids having influence on action and carrying the earth out of the locale because of more water. (b) Sweep periodically: the construction locale should be clear up before knocking off every noon and evening. (c) Wash the tyre: the tyre should be washed before leaving off the site according to the conditions current-then. If construction is executed after rain, the tyre of vehicle must be washed before the vehicle runs on the road. Moreover, baffle should be installed additionally. Redundant earthwork is transported and settled in time. Overload of vehicle transportation is prohibited. In the season when gales often appear, the oil cloth should be covered to prevent the dust rise on the way. B. The construction site shall be checked up periodically. The execution of the management measures is promoted and the cycle of sweep and sprinkling shall be shortened based on the factual condition. C. The TSP monitoring of the sensitive setting and the rectification should be finished during a limited period once when outlimit is witnessed. D. Administration and economic penalty should be adopted if construction violates the rules of operation or the misperformance is not revised in time. 4.1.2 Control of noise environment 4  The noise impact during the construction period includes equipment noise, man-made noise and vehicle noise. Thereby the attention is as follows: A. Arrange the construction time in reason and furthest avoid that many equipment making high noise work at the same time. B. In the choice of equipment type, the low noise equipment should be prioritized C. The related regulations of Beijing municipal should be observed if there are some sensitive site, especially residents regions, near the construction site. The construction is prohibited from 22 o'clock to 6 o'clock next day. D. Adopt all kinds of noise-damping and noise-descending measures to lower the noise of equipment, make the equipment good by strengthening their maintenance and set up sound insulation barrier. E. Operate the machine by the rules, lessen the sound of collision and decrease the times of using whistle used to command the executions of the task. F. Large-scale load vehicle should steer at the limited speed properly, cut down and try to stop sing the flute to lighten the communication noise. G. Monitor the level of noise on.the sensitive spot .and take countermeasures when site noise exceeds the standard. 4.1.3 Control of solid waste The solid waste during the construction period includes the living garbage of works and superfluous earthwork, which could have bad influence on air environment and water quality in watercourse if their management is not prefect. A. The sanitary rubbish should have a uniform piling and deposit site and be cleared and transported periodically. B. Clearing and transporting the earthwork, the surrounding block should be installed to prevent the water into watercourse except avoiding the rise of dust. C. Proper measures should be adopted to prevent rainwater into watercourse or municipal rain sewer by rain washing, especially in the rainy seasons. 4.1.4. Control of desilting of sludge in Qinghe River 5  Qinghe River has been the river accommodating wastewater for a long time. The sludge at the bottom of Qinghe River has been polluted seriously. The sludge emits the odor besides containing a large amount of pollutants. The new environment problems will be in place if the sludge is not treated properly. A. Waste sludge square could antiseepage in a certain extent to avoid that extravasate pollutes the ground water. B. When desilting, the silt and the clear earthwork are stacked respectively to cut down the quantity of the sludge. C. In the course of the transportation, toss and leakage should be avoided not to pollute the environment on the way. D. Drainage ditch should be constructed around the waste sludge spot to collect and discharge the surface runoff and prevent scouring the soil. E. The discharge of extravasate of the sludge should be controlled strictly. F. The discarded sludge should be covered by the sanitary material. 4.2 Operation period 4.2.1 Environment management of the water course and sewer system 4.2.1.1 Monitoring and control of sewer quality In order to ensure the sewer not to leak out, the followings should be assured: A. The base of the sewer and the interface of the pipe are constructed in accordance with related criterion. B. Tubing and plumbing accord with the requirement of design and the products are provided with the certificate of qualification. 4.2.1.2 Liangshuihe watershed A. Control the additional wastewater discharged into river. At first, draining the raw wastewater into the surface watercourse directly is stopped entirely in order to avoid that the water quality in Liangshuihe River gets worse. The followings need to be done: a. Notify institutions residing in Watershed of Lianshuihe River of the requirements of wastewater discharge. The wastewater from those units shall 6  be drained into wastewater interceptor or the surface watercourse respectively in conformity with different discharge standards. b. Check in the drains in Liangshuihe watershed and inspect them periodically. c. Establish the punishment system and sanction the units from which the wastewater doesn't reach the standards. d. Wastewater discharge shall satisfy the standards after being collected and treated in the limited time. B. Control the additional wastewater discharged into the interceptor All the wastewater from the interceptor will flow into the WWTP. But the WVVTP has some requirement of quality of inlet water, especially the wastewater containing some special pollutants which have a shock on the treatment effect. A set of integral declaration, examination and approval system should be established by cooperating with the environmental protection department. The wastewater which doesn't meet the requirement should be pre-treated and the degree of pretreatment and the discharge water quality (material control index) should be put forward. In addition, the monitoring of water quality which includes going on a tour of inspection and verification of the water quantity should be done periodically. The charge system should be constituted and the enterprise which violates the requirement should be punished strictly. In order to proceed with these works effectively and avoid the unnecessary repetition, the information intercommunication should be held with the environmental protection department once at least every year. C. The discharge demand of the wastewater out of the wastewater treatment system The wastewater quantity in Liangshuihe watershed is 0.8332 million m3/d, of which the wastewater into the interceptor is 0.7772 million m3/d and 56000 m3/d, 6.7% of total discharge quantity, can not flow into the wastewater treatment system. This part will be brought into the wastewater treatment system step by step. The requirements are as follows: a. Table the detail executive schedule. b. Confirm the concrete executive unit and person. c. Estimate the budget and confirm the source of fund. 7  d. Establish the sanction rules in accordance to which the units or persons who can't execute on schedule will be punished. D. Control the quality of the wastewater into the interceptor The special pollutants in the industrial wastewater may bring shock to the WWTP and affect the treatment effect. Wherefore the keystone of the monitoring and controlling drainage units should be ascertained after some choices, be signed and be spot-checked periodically. The wastewater from these units must meet Class B Standard of Beiing Municipal Discharge Standard of Water Pollutants. The reason of exceeding the standard should be identified and the countermeasures should be made out. The settlement should be finished in the limited time. E. Environment management on both banks of the river Both banks of a river are often weak tache. Ii is very serious that the solid waste is tossed on both banks of the river. The solid waste is washed into watercourse by rain or wind and the sight is affected. Hence the management of solid waste storage on both river banks shall be executed. a. Issue the notice stating that it is prohibitive to liter the solid waste within the scale of 1 OOm far from each river bank. b. Go on a tour of inspection of the solid waste and father the solid waste along both banks of the river periodically. If discovering the tossed solid waste, its source should be found out and the alarm and the necessary economic sanction should be given. c. Gain and clear the-floating thing blown into the river by the wind periodically. F. Control air environment along both banks of the river The impact of watercourse of the ground on the air environment is mainly the scent emitting from the watercourse, of which controlling index is odor. In order to lessen the incidence of odor, the followings need doing: a. Green along the banks of the river and select the trees which can cleanse the odor well b. Visit the residents along the river and hear about their suggestion periodically. c. Monitor the level of odor around the typical reach of the river periodically. 8  4.2.1.3 Qinghe watershed A. Control the additional wastewater discharged into river. At first, draining the raw wastewater into Wanquanhe River, Xiaoyuehe River and Qinghe River directly is stopped entirely. The followings need to be done: a. Notify nearby institutions of the requirements of wastewater discharge. The wastewater from those units is drained into wastewater interceptor or the surface watercourse respectively in conformity with different discharge standards. b. Check in the drains in Qinghe watershed and inspect them periodically. c. Establish the punishment system and sanction the units from which the wastewater doesn't reach the standards. d. Discharge the wastewater in accordance with the standards after fathering in limited time. B. Solution of the capacity lack of the wastewater treatment plant Today, the drainage quantity of Qinghe River is 487,600 m3/d. But the capacity of Qinghe WWTP in the first stage is only 200,000 m3/d, 400,000 M3/d in the second stage, which can not treat all the wastewater of Qinghe River. If the interceptor reaches the designed capacity, the gap will get bigger. In order to clean Qinghe River really, the suggestion is as follows: a. Execute the project of Xiaojiahe WWTP and Qinghe WWTP as quickly as possible. b. Adjust the capacity of the wastewater treatment plant to make all cut-off wastewater be treated. C. Control the additional wastewater discharged into the interceptor All the wastewater from the interceptor will flow into the WWTP. But the WWTP has some requirement of quality of inlet water, especially the wastewater containing some special pollutants which have a shock on the treatment effect. A set of integral declaration, examination and approval system should be established by cooperating with the environmental protection department. The wastewater which doesn't meet the requirement should be pre-treated and the degree of pretreatment and the discharge water quality (material control index) should be put forward. In addition, the 9  monitoring of water quality which includes going on a tour of inspection and verification of the water quantity should be done periodically. The charge system should be constituted and the enterprise which violates the requirement should be punished strictly. In order to proceed with these works effectively and avoid the unnecessary repetition, the information intercommunication should be held with the environmental protection department once at least every year. D. Control the wastewater from Tsinghua University The wastewater from Tsinghua University, 5901 m3/d, can not flow into the interceptor. Although these wastewater accounts for 1.2% of total wastewater quantity, the disadvantageous affection will be brought out on the water course. The advice is as followings: a. The wastewater from Tsinghua University should be brought into the interceptor as quickly as possible or Tsinghua University builds a wastewater treatment plant herself to discharge the wastewater compatible with the standard. b. Table the detail executive schedule. c. Confirm the concrete executive unit and person. d. Estimate the budget and confirm the source of fund. E. Control the quality of the wastewater into the interceptor The special pollutants in the industrial wastewater may produce shock to the WWTP and affect the treatment effect. Wherefore the keystone of the monitoring and controlling drainage units should be ascertained after some choices, be signed and be spot-checked periodically. The wastewater from these units must meet Class B Standard of Beiing Municipal Discharge Standard of Water Pollutants. The outlimit reasons should be identified and the countermeasures should be made out. The settlement should be finished in the limited time. F. Control air environment along both banks of the river The impact of watercourse of the ground on the air environment is mainly the scent emitting from the watercourse, of which controlling index is odor. In order to lessen the incidence of odor, the followings need doing: a. Green along the banks of the river and select the trees which can cleanse the odor well 10  b. Visit the residents along the river and hear about their suggestion periodically. c. Monitor the level of odor around the typical reach of the river periodically. G. Control of air environment along both river banks The impact of watercourse on the ground on the air environment is mainly the scent emitting from the watercourse, of which controlling index is odor. In order to lessen the incidence of odor, the followings need doing: a. Green along the river banks and select the trees which can cleanse the odor well b. Visit the residents along the river and hear about the suggestion of them periodically. c. Monitor the level of odor around the typical reach of the river periodically.. 4.2.2 Environment management of wastewater treatment plant 4.2.2.1 Control of inlet water The quality of inlet water should be monitored entirely to find the source of the special pollutant needing controlling. The special pollutants should be measured periodically to prevent the shock on the wastewater treatment plant. The reason of abnormal concentration of special pollutant and frequency of the emergence of the special pollutant should be found out and the solution should be identified. B. The quality of inlet water is monitored normally everyday. 4.2.2.2 Control of outlet water A. The quality of inlet water is monitored normally everyday. B. If the quality of outlet water is abnormal or exceeds the discharge standard, the track investigation should be done to find out the reason. a. If the problem is related to the operation system, relative operators should be notified in time to check the equipment.  b. If the problem is about the inlet water, the pollutant and its source should be found out and the solution should be brought forward. 4.2.2.3 Control of fume of boiler The emission of SO2 is mainly controlled for the oil-burning boiler. To make the sulfur concentration in light diesel less than 0.3%, the sulfur rate of every batch of light diesel oil should be sampled and analyzed. 4.2.2.4 Control of odor a. Green along the river banks and select the tree which can cleanse the odor well b. Visit the residents along the river and hear about the suggestion of them periodically. c. Monitor the level of odor around the typical reach of the river periodically. If the level of odor exceeds the standard, countermeasures shall be taken. 4.2.2.5 Control of noise A. The level of noise at the plant circumference and ambient sensitive spot is monitored periodically. If that of noise outlimits the standards, the reason should be identified. B. The necessary damper denoise measure is adopted to the main noise source causing the outlimit. C. Hear about the suggestions of ambient residents periodically. 4.2.2.6 Control of solid waste During the operation period, the solid waste produced at the wastewater treatment plant mainly includes sanitary rubbish, the larger TSP articles and the waste sludge. A. The living garbage must be piled in fixed-point and cleared and transported by environment sanitation department. B. Fixed piled point, corresponding management measures and receiving sites shall be available for larger TSP. The larger TSP articles are need to 12  wipe off the superfluous water and cover the cloth before being transported out to prevent leakage, toss on the way and pollution of environment. C. The quantity of the waste sludge of wastewater treatment plant is large and have thick smell. So the treatment and disposal scheme must be in place. It doesn't fit for being stored in the plant and should be transported out in time. To prevent the sludge not to carry secretly, the. tyre of the vehicle should be washed when the waste sludge is transported out. Moreover, the sludge on the surface of the vehicle could be treated into non-smell one if the vehicle passes the region with dense residents. 4.2.3 Scheme of environment management of boiler house The main aim of the scheme is to assure the boiler to operate safely, to alleviate emission of pollutants and to prevent the environment pollution caused by the explosion event. 4.2.3.1 Declaration and approval The procedure of declaration and approval must be fulfilled and the declaration and approval form of Beijing environment impact of construction engineering before the boiler house is rebuilt. 4.2.3.2 Environment management during design period The scheme of environment management during the design period of boiler house is as follows: A. Retain the unit which possesses national and Beijing municipal design qualification of relative gas-buming boiler to design. B. Select the production with identification made by the boiler factory which takes on the corresponding making license issued by national or provincial quality & technology supervision authority. C. The design of the boiler house must fit for the requirement of environment protection. a. The design of boiler house should meet the relate regulation in Design criterion of electric power device under danger of explosion and fire, Building anti-fire design criterion and multilayer civilian construction anti-fire design criterion. The anti-explosion design must be considered. 13  b. The principle of layout of boiler house location is to lessen the imDact of noise on the ambient environment as possible. c. The height of chimney of boiler house should meet Beijing municipal standard Emission standard of air pollutant of boiler(DB11/109-1998). d. The boiler needs to meet the demand of heating and safe and cost- effective operation. The boiler must be equipped with mount-burning system and measuring instrument, interlock protection and automatic device, ignition program control and flameout protection device. e. The design of gas supply engineering should assure the safe, stable gas- supply of boiler and meet the urgent opening and shut requirements. D. The following requirement needs to be considered when designing the pipe: a. The least distance of gas pipe far from building should fit for the requirement. b. The gas pipe can't be laid together with other pipes (such as cable, etc.) in the same ditch and not be laid under the permanent building or incentive, explosive and erosive material pile. c. The least depth of gas pipe under the ground should meet the following requirements: Under vehicle road >=0.8 Under non-vehicle road >=0.6m In yard >=0.3m d. The pipe should not be laid across the greening region because the boot will mangle it. e. The pipe should be laid on the appropriate base and the anti-earthquake measures should be considered. E. Design requirement of accessory equipment The design of the accessory equipment (including blower, water pump, and adapter). The accessory equipment includes safety valve, anti-explosion door, and all kinds of valve and controller and power-supply device. The scheme of environment management of the design of the equipment is as follows: a. Select products with identification made by the boiler factory who takes on the corresponding making license issued by national or provincial quality & technology supervision bureau. 14  b. The type and ability of all kinds of equipment must match the capacity of boiler. c. The intensity of noise of the blower and pump should make the noise in the boiler house not outlimited the requirement of Noise Standard of Industrial Manufactory Circumference (GB12348-90). d. The pressure of inlet and outlet of the gas press reguJator should meet the requirement of boiler and gas network to ensure that boiler can inflame safely and steadily. e. There are many kinds of valve, especially safety valve of pressure regulating system, in the boiler house. When choosing the valve, the shut velocity and ponderable pressure should be seriously considered. The copper-containing valve should not be selected (in the hepatic gas system) and the manual valve should be configured. f. The design of pressure-regulator station should meet the design criterion of pressure-regulator station. F. Design of the sweeping pipe and scattering pipe is as follows: a. Sweeping point should be set at the facility, accessories or elbow where the impurity assembles easily. b. The scattering pipe should be led to outdoors and its emission let should be 2m higher than the ridge of the house. The distance of the let far from the ground should more than 4m. The distance of the let far from the ambient building should meet related safety requirements. 4.2.3.3 Environment management of equipment installation A. Retain the unit possessing the license of boiler installation ratified by Beijing municipal labor bureau and meets the requirement of the Provisional Rules of Examination and Approval Management of Beijing Boiler Installation License. At the same time, the installation is reported to Beijing municipal labor bureau. B. Installation of boiler equipment a. The base of boiler and material of steel structure should accord with the design requirement to decrease the noise during operation period and eliminate unidentified trouble of safety. 15  b Boiler tub, header, heating surface pipe, valve and burner, etc., should be checked and cleaned. After the manual book read earnestly, the equipment are installed according to the criterion. c. Workers for boiler welding must have the passed certificate of Examination Rules for Boiler Welder. Welding seam must be checked according to the rules. d. Welding quality must be checked at any time during welding and recorded. e. Installation and performance of materials fire-enduring, heat preservation must meet the requirement of design and building quality must strictly be checked according to work criterion. C. Installation of boiler pipeline. a. Pipes, pipe piece, pipelines and valves must be checked with the designed requirements before being installed. It can be installed only when it meet the design requirements. b. Pipes, pipe pieces, pipelines and valves must be checked before installed. It can be installed only when it meet the quality requirements. c. The pipeline shall be installed according to the criterion and design requirements. D. Installation of accessory machines The accessory machines include fan, water supplying treatment machines, heat engineering instruments, electric equipment, which are installed according to design criterion. 4.2.3.4 Environment management of boiler equipment debugging. A. The enterprises with the boiler installation license which is issued by province-grade laboring department and accordant to installation type are retained to debug. B. Environment managers should emphasize on checking the rating outlet pressure (or water pressure) and the rating evaporation volume (or heat power) for the boiler, completion of safe valves, debugging of equipment and instruments, debugging of alarming equipment during debugging. C. Whether the concentration of soot pollution and noise can meet the requirement of environment quality must be checked during debugging. 16  4.2.3.5 Environment management of the boiler during operation period A. The enterprises in which boilers are working must have the capacity of organizing and leading the normal working and maintenance of boilers and handle with of accidents. A. Stoker must have operation certificate and work with certificate. C. The following rules must be drawn up during the operation of boilers: -post duty -shift regulation -safe operation regulations --maintain regulations -environment cleanness regulations -scouting examination regulations -operation log regulations -register regulations of machines objection D. All machines must be checked to see whether they are in state of ignition, especially whether safe valves, alarming equipment, accident buttons interlock protection machines are operable before ignition. E. Ignition for boiler, increasing pressure, operation of boiler must be normal as per the operation regulations and management regulations. Operation records shall be well made. F. Save fuel, electric power, water resource to reduce the wastage of resource. G. Wastewater from the boiler house is brought into the wastewater treatment and discharge system in the enterprise. H. The domestic waste is cleaned and transported in time. 4.2.3.6 Treatment of main accidents A. Accident of water lack a. When water level gauge fails or is damaged or low water alarms many times and water is not supplied in time and cease of boiler water supplying pump, circulating pump and not restored in time, boiler shall be stopped as to receive urgent service. 17  b. When water level gauge can not show water level, "calling water" is adopted to call water. It proves that there is a slight lacking of water when water is low or low water alarming equipment rings occasionally, ceases occasionally after calling water. At that time, water can be supplied into the boiler till the water level is normal. If water can not be seen after calling water, boiler should be ceased in no time. It is banned to supply water to boiler. B. Water filling accident a. When water level gauge exceeds the highest water level (visible water level), the boiler is full of water. When water is filled, water level gauge should be washed after that to observe its veracity. If visible water level is still not seen after calling water, it is judged that water is seriously full according to the variation of operation parameters and boiler should be stopped instantly. b. If visible water level is seen by calling water after washing water level. gauge, water is slightly full and the following measures are adopted: * Cut down baffler of delivering fan and reduce fuel supplied and weaken the burning. * Stop supplying water and turning on discharging system to discharge water until water level is restored. C. There is serious leakage for the main pipeline due to the accident of breakage of heating surface pipe. When heating surface pipe breaks or there is serious leakage on the main pipeline, or normal water level or air pressure can't be maintained, the related department should be informed to stop boiler. If pressure, water level can not be maintained, boiler should be stopped right now. D. Urgent stop of boiler Boiler should be stopped instantly in any of the following cases -Burning gas system is leaking or alarming reason is not found. --Boiler pressure and temperature of outlet water exceeds the limit and is going up. -Water is seriously full or lack. --All pressure water level gauges fail. 18  --Feedwater pump, circulate pump are stopped due to accident. --Electrical power system fails. --Boiler components are seriously damaged. Boiler wall is seriously broken. -- Steel structure is seriously deformed. -- Other things influence safe operation. E. Report to environmental protection department and monitor the accident's influence on ambient environment when accident happens. 5. Organizations and duty 5.1. Organizations There is much difference of the environment management contents between construction time and operating time and some difference of provisionality and long-term. So separate organizations and grading responsibility should be adopted. Corresponding management organizations should be removed in no time and it is agreed to have some intercross in some period of time according to specific working conditions when the management organization begins to operate in the operation time. 5.1.1 Liangshuihe watershed and Qinghe watershed 5.1.1.1 Environment management organization during the construction period Environment management organization independent of construction department and no conflict of interest with the project should be established and workers for the machines should have certain longevity and experience in order to assure the validity and justness of work of environment management organization. It is suggested the organization be composed of the following personnel: A. Liangshuihe river Group leader 1 Loudness monitor 2 Noise monitor 2 Solid castoff monitor 1 Indicting-hotline worker 1 (part-time job agreed) B. Qinghe river Group leader 1 Loudness monitor 2 Noise monitor 2 Solid castoff monitor 2 19  Indicting-hotline worker 1 5.1.1.2 Environment management organization during operation period The environment management during operation period is a long-term and complicated position. So the environment management organization should be mainly composed of environment management delegates who are authorized by the highest management of the construction enterprise. The function of the environment organization is to be responsible for the daily environment management in the Liangshuihe watershed and Qinghe River. It is suggested the organization be composed of the following personnel: A. Liangshuihe river Group leader 1 Air monitor 1 Water system monitor 2 Noise monitor 1 Solid castoff monitor 1 B. Qinghe river Group leader 1 Air monitor 1 Water system monitor 2 Solid castoff monitor 1 Implementation of specific work shall be completed with coordination from every department. 5.1.2 Environment management organization for the Boiler Reconstruction Subproject A The tiptop leader responsible for the boiler reconstruction subproject in parent company is also the tiptop leader of the environment management for the item and he(or she)should appoint an environment management delegate to assume responsibilities for implementation of the environment management scheme. B. The tiptop leader of the enterprise which the boiler house is belonged to is also the tiptop leader of environment management for boiler house .He (or She) is responsible for the environment management for boiler house and appoints a environment management delegate to be responsible for the daily work. The construction enterprise for boiler house is responsible for the environment management during construction. 20  5.2 Responsibility and right of environment management 5.2.1. Liangshuihe watershed and Qinghe river 5.2.1.1 During the construction period The environment management group should make out detailed management plan and check the plan monthly according to the construction plan for the project in order to revise the plan necessarily. The group leader should report to the project leader and report the result of environment management on regular basis and put forward the solving measures for the potential problem found in the check. Air, noise, solid castoff waste monitors should scout to check the executive conditio.n of environment protection measures during construction according to the plan and are responsible for the measures timely and at certain point and report the checked, monitored results and treatment opinions on spot to the group leader. Hot line workers are responsible for the record, trim of the complaint telephone and report to the group leader and are responsible for answering the problems raised by public. 5.2.1.2 During operation period Environment management group is responsible for the establishment, revise and execution of environment management system. The group leader is responsible for ordinary work of environment management and report the environment management result checked to the environment management delegate on monthly basis and put forward the solving opinion on the potential environment problem found. The environment monitor is responsible for checking of environment elements, the implementation of monitoring plan, putting forward protection measures and reporting the result to the group leader weekly. The tiptop manager of the organization is responsible for the drawing of environment guideline and management, appraising and administration delegates to monitor the work of environment management system. The 21  environment department leaders are responsible for the observance of environment regulation. The management personnel are responsible for continuous improvement of environment behavior. The common workers shall observe the operation regulation. Moreover, environment management for Liangshuihe drainage area and Qinghe river covers a large area and some environment problems can not be controlled by Beijing Municipal Drainage Corporation and the management must be completed by Environmental Protection Bureau, Water Conservancy Bureau, Environment Clearing Bureau. The group leaders should be responsible for the harmony communication among multiple institutions and take necessary interventions. 5.2.2 Responsibilities of environment management organization for the Boiler Reconstruction Subproject A. Responsibilities of environment management organization responsible for the Subproject: -Complete the examining program of the related environment management for the Subproject and instruct the environment management examination. --Observe and collect all laws, statute and some regulations related to the Subproject. --Carry out the environment management plan B. Responsibilities of environment management organization for the boiler house --Make out the detailed environment management system including environment guideline, environment aim and index, environment management scheme and implementation plan. -Supervise the chimney soot discharge --Supervise the operation status of noise source in boiler house. --Supervise the normal working of boiler and its pertain machines and the sensitivity of emergency machines to avoid accident. --Supervise gas quality and coordinate with related departments when some problem is found. 22  --Entrust enterprises which are eligible for monitoring boiler soot to measure pollutant from boiler chimney and noise timely and make out the monitoring plan. 6. Monitoring plan 6.1 Liangshuihe watershed and Qinghe sewer 6.1.1 Implementation of the monitoring The environment monitoring to the Liangshuihe River during the period of the construction and operation involves many facts including atmosphere, effluvium, noise and water. The configuration of equipment and the supervisor is very complicated. There will be a expense to staff and equipment for some low supervising frequency and some kinds of periodical supervising project if all would be fulfilled by our own department. So it is suggested that the supervising of the atmosphere and the effluvium could be entrusted to the units having the qualification of supervising but the supervising of the water quality is the routine supervision and the monitoring of the noise is relatively simple so that could be fulfilled by the project owner itself. 6.1.2 Startup level, proceeding level and target level 6.1.2.1 Definition The routine method for reflecting environment supervising result and necessary action requirements is to divide the degree of the environmental influence into startup level, proceeding level and target level, the definition is as follows: Startup: startup level indicates the initial deterioration of quality of the surrounding environment. Proceeding: proceeding level means that remedy action should be taken to prevent the excess target level of the environment quality. Target: target level is ascertained by environment supervising department or according to the related statute. The target level must accord with the practical instance and related statute but must be practical. The local statute must be taken into account when setting the level. If the level is set too low, the continual incident of the exceeding will depress the efficiency of the audit. But the level can not be set too high either. 23  The three levels above-mentioned usually can be taken during the construction period of the environmental supervising but the requirement of the local statute must be implemented during the period of the proceeding. 6.1.2.2 Confirmation of the TAT level during the construction period A. Atmosphere The startup, proceeding and target level is based on the percent number computed by unilateral t-distribution. Generally 95 percent is adopted as startup level, 99 percent as target level, the number between the two as proceeding level. But the target level should not be set more than the limitation of the environment standard for maintaining the quality goal of the environment. B. Noise It is suggested that the TAT level should base on the limited value of the*- daytime construction noise, 75dB(A). There are no needs to take action unless the noise level exceeds 75dB(A) or having any claim heard. 6.1.3 Monitoring scheme 6.1.3.1 Construction period A. Atmosphere a. Measurement parameter Total suspend particle (TSP) and wind speed b. Location of the measuring spot Setting 12 measuring spots are suggested during the construction period including 5 measuring spots along Liangshuihe River water course and 5 measuring spots along Qinghe River channel and one measuring spot at each Wastewater Treatment Plant. The measurement location should be set on the ground and far from obstacles or potential fresh air entrance if the condition of the spot permitted. c. Monitoring frequency and duration Monitor the 24-hour average TSP once for every 15 days at each monitoring spot and record the wind direction and speed information at the same time. d. Equipment configuration 24  The following equipment and similar apparatus are recommended: e Use MWL-2000 large volume atmosphere sampling system to measure the 24 hour average TSP * Handheld powder and ash measuring apparatus * Analytical balance with the delicacy of 0.1 mg * Dryer * Handheld wind direction and wind speed meter The apparatus above-mentioned must be calibrated and operated according to the specifications e. Action program The environmental supervising group and project leader and contractor should take actions listed in Table 8-2 when the outlimit is witnessed in the monitoring: Table 2 Atmosphere environment administration program Leve Action II 1. The environment supervising group inform the project leader, appraising the pollution source and inspecting the working ways of the contractor 2. The environment supervising group confirms the necessary appending revive method and propose suggestion to the project leader up 3. The project leader conveys the appending revive request to the contractor 4.The contractor implements the appending revive method 5.After the problem solved, the environment supervising group informs the project leader 1. The environment supervising group informs project leader and supervises frequency increases to 3 day per week. Acti 2.The environment supervising group contacts with the project onl leader and discusses the revive action taken by the project leader and the contractor 3.The environment supervising group informs the project leader after the problem solved Targ 1.The environment supervising group informs the project leader 25  et and confirms the pollution source and checks the construction method, supervising frequency increases to once a day 2.The environment supervising group analyzes the construction program to determine and implement the appending revive measure provided by the contractor and submit the report 3.Construction shall be stopped if the project leader thinks it necessary 4.The environment supervising group informs the project leader after the problem solved B. Noise a. Measurement parameter Measure Leq30,, of daytime construction noise and Leqs,ji of the night construction noise. b. Measuring location It is suggested that 8 measuring spots at the boundary of the Liangshuihe River and 5 measuring spots along the Qinghe River are established. The measuring spots should be located at the minimum distance away from the acute acceptor. c. Supervising frequency and duration Measure Leq30mn noise level once per week at each monitoring spot and Leq5rin noise level shall be measured at night if there are construction action at night. If the action level is exceeded and determined a result of undergoing construction, the supervising frequency should be increased to three times per week until the Leq falls back under the action level. If the target level is exceeded and determined a result of undergoing construction, the supervising frequency should be increased to three times per week until the Leq falls back under the action level. d. Equipment configuration The tone-class measurement apparatus equipped with statistical analyzer shall be adopted and be calibrated according to principles. f. Action program It is suggested that the TAT level should base on the limited value of the daytime construction noise, 75dB(A), and with the residential claim being considered. There are no needs to take action unless the noise level exceeds 26  75dB(A) or having residential claim received. The action is shown in Table 8- 3. Table 3 Action rogram of construction noise control Level and standard Actions 1. The environment supervising group informs the project leader, appraises the pollution source and inspects the work of the contractor 2. The environment supervising group confirms the necessary appending revive Startup: having a claim method and makes suggestion to the project Stareceived haig lam leader received 3. The project leader conveys the appending revive request to the contractor 4.The contractor adopts the appending revive method 5.After the problem solved, the environment supervising group informs the project leader 1. The environment supervising group informs project leader and the supervising Action: reveived 3 frequency increases to 3 day per week. indict about the same 2. The contractor takes further revive noise source within a method week 3.The environment supervising group informs the project leader after the problem solved I.The environment supervising group informs the project leader, and the supervising frequency increase to once a day 2.The environment supervising group Target: 4+ claims about analyzes the construction program to the same noise source determine and implement the appending within a week revive measure provided by the contractor and submits the report 3.The environment supervising group reports the result to project leader 4.The environment supervising group informs the project leader of the settlement The noise level 75dB(A) refers to the accumulative noise coming from all noise sources. If the value measured exceeds the level, the noise source must be found out so as to determine the obligations of the construction activity. The standard acoustics principles should be applied to ascertain the 27  source. The contractor must analyze the working method and the equipment immediately and revive the noise problem. C. On-site survey and special supervising To control the environment impacts caused by the construction effectively, the environment supervising group should take effective method to identify any possible problem., a. Audit the construction program of the contractor It is hard to predict the specific construction action a few months before the construction. It is very important to get and check the working program of next month of the contractor and make the environment supervising group -informed of the general situation of the working place and the equipment and the equipment application and the location and pay attention to the potential problems and mention the project leader about the potential problems and the possible resolving methods, for example revising the equipment utilization plan to decrease the potential noise effect. Moreover, supervising audit program should be flexible enough to make the supervising time and location adjustable to adapt to the construction needs. b. On-site survey The environmental supervising group should make on-site survey without declaration to auditing if contractor complies with the environmental regulations and to find out the environmental questions and to identify the latent environmental questions. The group must write down the observation results on spot, and take photos if necessary. They should notice the project leader if there are any acts against the contract, any latent or existing environmental questions, or any settling means c. Special monitoring The environmental supervising group should conduct special monitoring on spot with portable dust and noise measuring meters. This special monitor will be helpful for the pollution identification on spot, which is useful for identifying proper solving means. All the special monitor data must be recorded 6.1.3.2 Period of operation A. Water quality monitoring a. Monitoring spot 28  i. Liangshuihe River basin * Determine the monitoring spot for discharge containing special pollutants * Inlet water of wastewater treatment plant * Outlet water from wastewater treatment plant * Three monitoring spots set for each watercourse: location where the outlet water from WTTP mixes completely with water carried in the river ii. Qinghe River basin * Determine the monitoring spot for discharge containing special pollutants Four monitoring spots set for each watercourse: Wanquanhe, Xiaoyuehe, Upstream Qinghe River and location where the outlet water from WTTP mixes completely with water carried in the river b. Monitoring items Traditional items: COD, BOD5. SS, pH, oil, NH3-N. TP, TN Special items: Determined after investigation and comparison c. Monitoring frequency - Special monitoring spot: once every season or irregular.monitor, bur more than three times a year. * Inlet water and outlet water of wastewater treatment plant: monitor at the same time. Details is in Table 8-4 * water course: once a month Table 4 Water quality of the wastewater treatment plant and the monitoring items Items pH Suspe COD Oil NH3-N BODs TP TN Kind of drain nd _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ m a tter _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ The general 4/per once/ once/ once/ Once/ once/ once/ once/ drain spot of inlet group per group per per two per per and drain day day month days day day Note: three work shifts per day d. Equipment configuration The analytic instruments needed for analysis of water quality are in Table 8-5. Table 5 The configuration of analytic instruments for water quality No. Instrument Amount 1 pH meter 1 2 bio-chemical incubator 1 3 blowing dryer 1 29  4 Oil meter 1 5 Hexad electric furnace 3 6 refrigerator 2 7 Environmental monitor car 1 8 Computer (including printer and so on) 1 9 Analytical balance 1 10 Spectrometer (Model:72) 1 B. Odor Monitoring a. Monitoring parameter Monitor the concentration of odor along the riverside and the plant circumference (No dimension) b. Monitoring spot Four spots in the East, the West, the South, and the North boundaries of the plant. Set up four monitoring spots in Liangshuihe River and Qinghe River Watershed respectively (equal to current monitoring spots in environmental assessment). There are total 20 monitoring spots. c. Monitoring frequency Once per quarter, twice per week if there are residential claim. d. Apparatus configuration Better entrust others to complete it because of complexity of testing C. Noise monitor a. Monitoring parameter Sound level A-equivalent: Leq30IiI b. Monitoring spots - There are 12 monitoring spots at the East, the West, the South and the North boundary of the plant. c. Monitoring frequency Monitor once per quarter; Once per day if there are complaints until the pollution sources are identified. d. Apparatus configuration Monitoring instrument equipped with statistical analyzer. 30  6.2 Gas boiler 6.2.1 Construction period 6.2.1.1 Air environmental monitor A. Monitoring items The monitor items are the TSP and the wind velocity during the construction period B. The distribution of monitoring spots The distribution of monitoring spots in construction period is connected with the size of the construction site. One monitoring spot shall be set for little boiler house, two or three for larger boiler house. C. Monitoring frequency Once a month during the construction period 6.2.1.2 Noise monitor A. The distribution of noise monitoring spots At least four spots on construction site, monitoring spots shall also be set at sensitive areas around the construction site. B. Monitoring frequency Once a month during the construction period. 6.2.2 Environmental monitoring plan in boiler running period 6.2.2.1 Air pollutant monitoring plan A. Monitoring items SO2. NOx. CO, dust. B. Monitoring spots Set up sample spots in every chimney for monitoring fume emitted from the chimney C. Monitoring frequency a. Monitor the chimney once every heating period. 31  b. Monitor chimney at the first fire after the boiler overhaul 6.2.2.2 Noise monitoring plan A. Monitoring items Monitor the Leq301in in daytime and the Leq30mjn at night. B. The distribution of monitoring spots There are 4 monitoring spots at the East, the West, the South and the North boundary of the boiler house C. Monitoring frequency a. Once every heating period b. Once at the first fire after boiler overhaul c. Measure the noise once a month if the underground boiler house is integrated with the building and vibration test performed simultaneously. 6.2.2.3 Execution of monitor It is not necessary to set up independent chemical laboratory and monitoring organization for each single boiler house. (1) The boiler house monitoring plan can be added to the general monitoring plan of the plant if the boiler owner have the monitoring ability. The items that the plant can not monitor can be entrusted to other qualified monitoring agencies. (2) The boiler owner without the monitoring ability can entrust other qualified monitor organization to implement the monitoring. 6.3 Evaluation of Monitoring Expense 6.3.1 Construction Period (1) Liangshuihe and Qinghe Sewer Subproject * Atmospheric,environment monitoring (undertaken by social partners): RMB54,000. 32  Instantaneous dust measurement instrument (undertaken by construction vendor):30,000. * Noise measurement instrument (undertaken by construction vendor): RMB30,000. * Labor cost: RMB36,000. Subtotal: RMB150,000. (2) Boiler Reconstruction Subproject * Atmospheric environment monitoring (undertaken by social partners): RMB454,000. * Noise monitoring (undertaken by social partners): RMB1.21 million. Subtotal: RMB1.664 million (1008 boiler houses covered) Total of the two Subprojects: RMB1.814 million. 6.3.2 Operation Period (1) Liangshuihe and Qinghe Sewer Subproject * Water quality monitoring (undertaken by operators) --Instrument: RMB450,000 (depreciation: RMB45,000/a) --Chemical reagents; RMB150,000/a --Labor cost: RMB216,000/a * Odor monitoring (undertaken by social partners): RMB40,000/a ^ Noise monitoring instrument (undertaken by operators): RMB30,000/a (labor cost included in expense of water quality monitoring) Subtotal: RMB454,000 (2) Boiler Reconstruction Subproject * Flue gas monitoring (undertaken by social partners): RMB1.62 million/a * Noise monitoring (undertaken by social partners): RMB403,000/a Subtotal: RMB2.023 million/a (1008 boiler houses covered) Total of the two Subprojects: RMB2.477 million/a. 6.4 Reporting of Monitoring Results (1) Monitoring results during the construction period shall be reported on quarterly basis. 33  (2) Reporting of monitoring results during the operation period: * VVTTP: once every quarter in the first three years; once every year afterwards * Watercourse: simultaneously with WTTP reporting * Boiler house: once every two years. 7. Personnel training In order to ensure the trouble-free and efficient operation of the environment administration, it is important to train the enterprise personnel and let them know the importance and the significance of the project. It is also important to 'train workers in different posts. The details are in Table 8-6. Table 6 Post and objectives of training program Post Objective of training Senior administrator Increase the understanding to strategic significance of environmental administration Worker with responsibility in Increase the skills of environmental protection environmental improvements Worker who are likely to make The importance and requirement serious effect on regulations and of regulations and polices polices Ordinary worker Increase the environmental consciousness, the post skill training The training is proceeded in the means of schoolteaching and checked for the effect by the answer sheet. At last, the entire process of training should be recorded, and all the training materials should be archived for future use. The gas boiler worker must get the special training and pass the strict examination and get the qualification certificate for his post 8. Information intercoununication It is necessary to transfer different information of different organizations and posts and deliver related information about environmental administration to related parties and social partners. 34  The internal information communication can be processed in different ways, such as meeting, inner brief reports, etc. But it is necessary to hold formal meeting every month and all the communicated information should be documented. The outside information communication should be held once every year or half a year. The information communicated with other organizations should also be filed. 9.Recording For the efficient operation of the environmental management system, a perfect recording system must be set up, and the following records shall be written down. (1) Law and regulations (2) License (3) Environmental factor and its effects (4) Training (5) Check, verification, and maintenance activities (6) Monitoring data; (7) Inconsistency (8) Validity of correction and prevention (9) Information from related institutions (10) Auditing (1 1) Assessment and examination Moreover, the above-mentioned information recording must be controlled, including record marking, collecting, cataloging, archiving, storing, administration, maintenance, query, storation period and procession of the record. 10.Target of sustaining improvements (1) The reliable compensation source for the Liangshuihe River as the city water system is the exit water from the Wastewater Treatment Plant. All of the three Wastewater Treatment Plants belong to the secondary treatment, of which the outlet water can meet the discharge standard but not reach the environment quality standard of the surface water, especially the scenery water. So it is suggested that the secondary treatment can only be deemed as the fist stage target and adding the third processing and implement wiping off the mud is necessary for improving the water quality in the long term. (2) Both banks of the Qinghe River have changed from village to urban along with the northern extension of the Zhongguancun Science and Technology Garden. There shall be further improvements implemented for the sewer 35  construction. In order to improve and maintain the water quality of the Qinghe river, the things needing to do are as follows: * The wastewater drained from Tsinghua University must be treated as soon as possible; * Build Xiaojiahe Wastewater Treatment Plant quickly; * Implement Qinghe Wastewater Treatment Plant quickly; * Adjust the scale of the two Wastewater Treatment Plants to the same drainage quantity if possible; * Supply more and more fresh water if possible.