Su Jian zhi an〔2020〕123number
Housing and Urban-Rural Development Bureau (Project Construction Committee), Ecological Environment Bureau, Urban Management Bureau, Nanjing, Wuxi, Suzhou and Nantong Gardens (Municipal) Bureau:
In order to implement the Emergency Plan for Heavy Pollution Weather in Jiangsu Province, do a good job in classified control of dust pollution prevention and control on construction sites, implement the exemption policy for control and support the smooth progress of construction projects, according to the Emergency Plan for Heavy Pollution Weather in Jiangsu Province issued by the general office of the provincial government (Su Zhengban made [2019〕fiveNo.), the Provincial Department of Housing and Urban-Rural Development and the Provincial Department of Ecology and Environment jointly formulated the Emergency Work Plan for Dust Control on Construction Sites in Heavy Pollution Weather in Jiangsu Province (attached), and relevant local departments are requested to seriously implement it.
Contact: Xu Jiaxiang,025-51868699. Mailbox:707373088@qq.com.
Jiangsu Provincial Department of Housing and Urban-Rural Development Jiangsu Provincial Department of Ecological Environment
2020yeareightmoonsixsun
(This piece is publicly released)
Dust from construction sites in heavily polluted weather in Jiangsu Province
Control emergency work plan (for Trial Implementation)
First, set the purpose
Implement the Emergency Plan for Heavy Pollution Weather in Jiangsu Province, establish and improve the working mechanism for dust prevention and control at construction sites in heavy pollution weather, and effectively control and reduce the impact of dust on air quality at construction sites.
Second, the basis for formulation
Notice of the State Council on Printing and Distributing the Three-year Action Plan for Winning the Blue Sky Defence War (Guo Fa [2018〕22No.), Notice of the Provincial Government on Printing and Distributing the Implementation Plan of Jiangsu Province’s Three-year Action Plan to Win the Blue Sky Defence War (Su Zhengfa [2018〕122No.), Emergency Plan for Heavy Pollution Weather in Jiangsu Province (Su Zhengban made [2019〕fiveNo.) and other documents.
Third, the scope of application
Dust prevention and control in the construction, reconstruction, expansion, landscaping and demolition of housing construction and municipal infrastructure projects in the province under the condition of heavy pollution weather.
Fourth, the working principle
Construction, urban management and ecological environment departments at all levels shall, under the unified leadership of the local people’s government, follow the principle of "graded responsibility, timely response, coordination and dynamic control".,Do a good job in the prevention and control of dust on construction sites in heavily polluted weather, respond to emergency warning in time, quickly implement emergency measures, strengthen communication and cooperation between departments, and improve joint prevention and control and rapid response capabilities. According to the early warning information, start the corresponding level of response, and make corresponding adjustments with the change of early warning information.
Five, early warning classification and emergency response measures
According to the Emergency Plan for Heavy Pollution Weather in Jiangsu Province (Su Zhengban made [2019〕fiveNumber), early warning from low to high is divided intoⅢ、Ⅱ、IThree levels are marked with yellow, orange and red respectively, and the red warning is the highest level.
(1) Yellow warning: predict the future.48Hourly air quality index of districts and cities (AQI) the average value is reached200Above, or monitoring to districts and cities.SO2Hourly concentration reached500microgram/More than cubic meters, and did not meet the high-level warning conditions.
startⅢLevel emergency response, emergency response measures are as follows:
1. Increase the frequency of law enforcement inspections on construction sites;
2. Stop blasting, crushing, building demolition, concrete mixing without closure, and stop spraying and painting on outdoor construction sites and shotcreting on slope protection;
3. Earthwork excavation, road surface excavation, road surface washing and planing, earthwork transportation (except that it is transported by closed muck trucks above the national standard 5), floor garbage cleaning and mechanical operations such as crushing, cutting and sawing are suspended;
4. Increase the frequency of sprinkling water on the construction site to reduce dust, mechanically flush the roads at the entrance and exit of the construction site, and strengthen the coverage of the exposed ground that is not hardened, the material yard that is easy to raise dust, and the shutdown site (see Annex for coverage requirements, methods and scope)one)。
(2) orange warning:Predict future persistenceseventy-twoHourly air quality index of districts and cities (AQI) the average value is reached200Above, or monitoring to districts and cities.SO2Hourly concentration reached650microgram/More than cubic meters, and did not meet the high-level warning conditions.
startⅡLevel emergency response, emergency response measures are as follows:
1. Increase the frequency of law enforcement inspections on construction sites;
2. Stop blasting, crushing, and concrete mixing without closure, and stop painting and shotcreting for slope protection in outdoor construction sites;
3. Except for livelihood security projects, other open-air demolition and construction site operations are suspended (continuous concrete pouring can be carried out normally for technical requirements);
4. Increase the frequency of sprinkling water on the construction site to reduce dust, implement mechanized flushing on the roads at the entrance and exit of the construction site, and strengthen the coverage of the exposed ground that is not hardened, the material yard that is prone to dust, and the shutdown site;
5. Transport vehicles such as bulk materials, coal, coke, slag, sand and earthwork are all prohibited (excluding ready-mixed commercial concrete and mortar, steel, etc.);
6. All fuel engineering machinery is stopped.
(3) Red warning:Predict future persistence96Hourly air quality index of districts and cities (AQI) the average value is reached200Above, or predict the future.24Hourly air quality index of districts and cities (AQI) the average value is reached450Above, or monitoring to districts and cities.SO2Hourly concentration reachedeight hundredmicrogram/More than cubic meters.
startILevel emergency response, emergency response measures are as follows:
1. Increase the frequency of law enforcement inspections on construction sites;
2. Stop blasting, crushing, and concrete mixing without closure, and stop painting and shotcreting for slope protection in outdoor construction sites;
3. All open-air demolition and construction site operations are suspended (continuous concrete pouring can be carried out normally for technical requirements);
4. Increase the frequency of sprinkling water on the construction site to reduce dust, implement mechanized flushing on the roads at the entrance and exit of the construction site, and strengthen the coverage of the exposed ground that is not hardened, the material yard that is prone to dust, and the shutdown site;
5. Transport vehicles such as bulk materials, coal, coke, slag, sand and earthwork are all prohibited (excluding ready-mixed commercial concrete and mortar, steel, etc.);
6. All fuel engineering machinery shall be stopped (except for emergency rescue).
Early warning at all levels must strictly implement the emergency emission reduction measures for heavily polluted weather stipulated by the state and the province and other response measures specified in the emergency plan.
Construction sites and processes listed in the emergency control exemption list (see annex2), the operation can be carried out in accordance with the exemption management measures during the early warning period.
The early warning information of heavy pollution weather is released or released by the office of the provincial heavy pollution weather emergency command center, and the information is sent to the people’s government of the emergency response city, and the information is also released to the media and the public. The people’s governments of all districts and cities shall, according to the instructions of the Office of the Emergency Command Center for Heavy Pollution Weather or the changing trend of air quality in this Municipality, designate relevant departments to issue or remove early warning information for heavy pollution weather.
VI. Job Requirements
(1) Strengthen leadership and make careful arrangements.Construction, urban management, ecological environment and other departments at all levels should fully understand the importance of prevention and control of dust pollution in construction sites, do a good job in classified management and control, and implement the policy of exemption from management and control, not only to ensure the control of atmospheric environment, but also to support the smooth progress of engineering construction projects. It is necessary to do a good job in the classification and grading control of concrete enterprises, and ensure that the process requiring continuous concrete pouring can be carried out normally from the source. Local construction administrative departments should urge the construction site to take effective measures to realize "six hundred percent" of enclosure around the construction site, stacking and covering of dust-prone materials, wet earthwork excavation, road hardening, cleaning of vehicles entering and leaving, and closed transportation of muck vehicles, and install online monitoring and video monitoring equipment.
(two) rotating consultation, strengthen cooperation.The Provincial Department of Housing and Urban-Rural Development and the Provincial Department of Ecology and Environment have established a monthly rotating consultation mechanism to regularly communicate, exchange work information and study intersection issues. Departments of city construction, urban management and ecological environment can refer to this model, regularly strengthen research on issues of common concern and concern, and formulate scientific, reasonable and effective emergency control measures for heavy polluted weather while doing a good job in dust control at the construction site, so as to prevent frequent shutdown of the construction process and bring greater risks to safety production. Local construction administrative departments should master the management of construction sites during emergency control, assess the impact of heavily polluted weather on engineering construction, and report to the Provincial Department of Housing and Urban-Rural Development in a timely manner.
(3) Strengthen joint law enforcement and implement precise punishment.Local construction, ecological environment and urban management departments should make full use of the provincial comprehensive monitoring platform for pollution prevention and control, weave and compile the "tight encirclement" for monitoring environmental pollution, integrate online monitoring facilities of construction, urban management, ecological environment and other departments, further strengthen information sharing, and implement online dynamic management of pollutant discharge. To carry out joint law enforcement actions on a regular basis, the construction administration of each district and city.The competent department shall put forward the "six hundred percent" implementation requirements (see the annex for the "six hundred percent" implementation reference suggestions)three) to provide a basis for the subsequent implementation of joint precision law enforcement.The outstanding and difficult problems found in the inspection are entered into the comprehensive supervision platform, and the whole process is tracked and supervised to ensure timely rectification. Local construction administrative departments should increase the frequency of inspections during the emergency control of heavy polluted weather, and immediately order rectification if they find that illegal construction and dust control measures are not in place; It is necessary to urge construction units to strengthen dust prevention and control education; For construction sites that have not stopped or resumed work without authorization, severe punishment methods such as fines, notification, credit scoring, and restrictions on market access should be adopted to force the construction unit to implement the responsibility of dust prevention and control.
(4) Improve the positive incentive mechanism and implement differentiated management.Exemption policy is an important mechanism to encourage the development of environmental protection. Local construction administrative departments should urge construction enterprises and construction sites to strengthen pollution control, improve the pollution control level against industry benchmarks, and meet the conditions stipulated in the Administrative Measures for Exemption of Production Stop and Production Limit in Autumn and Winter in Jiangsu Province and Supplementary Notice on Strengthening Exemption Management of Production Stop and Production Limit in Autumn and Winter in Jiangsu Province, and encourage enterprises and project departments to actively submit exemption applications to local housing and construction departments. The construction department should take the lead in dynamic management of the exemption list of emergency management and control, include the qualified ones in the exemption list of emergency management and control, ensure that the incentive policies are put in place, and strengthen the clear orientation of "doing well is different from doing badly" in environmental protection. During the emergency exemption period, if any behavior contrary to the exemption conditions is found, the exemption qualification will be cancelled, and no application can be made again within six months. If the circumstances are serious, the relevant acts shall be carried out in accordance with the provisions of the housing construction credit score.
Attachment:1. Coverage requirements, methods and scope
2. Emergency control exemption process scope
3."Six hundred percent" implementation reference suggestions
attachmentone
Coverage requirements, methods and scope
I. Coverage requirements
Construction sites should strengthen management measures such as sealed storage or covering of cement and other fine-grained building materials that are easy to fly.Strengthen the coverage of exposed ground, material storage yard and shutdown site. Dust prevention measures such as dust prevention net covering and vegetation planting can be adopted for all kinds of exposed ground, mound and foundation pit excavation. Dust prevention net covering or vegetation planting should be adopted for vacant areas according to the service period and function. When building materials such as sand and stone and construction waste are piled in the open air, dust prevention net should be used for covering. For temporary construction, the exposed area and time of earthwork should be reduced as much as possible.
Second, the way of coverage
Dust-proof coverage in the construction area can adopt single coverage or composite coverage. Single coverage refers to the coverage method of using only dust-proof net, and the density of dust-proof net should be as dense as possible, and the dust-proof net with flat wire of more than four needles should be used for coverage to achieve the effect of dust prevention and dust fixation. By planting vegetation, before the greening effect is achieved, the dust-proof net should be used to cover it separately to form a composite cover, so as to achieve the effect of dust prevention and dust suppression. The dust-proof covering net in the construction area must be compacted firmly, which can play a good wind-proof and dust-proof effect in a certain period of time.
III. Coverage
In view of the shallow groundwater level in some areas of our province, the soil is sticky, the water retention is good, and the excavation is mostly wet soil, which is not easy to produce dust. In addition, the muck is generally covered with dense mesh, and the material is easy to age, the recovery rate is low, it is non-degradable, and it is easy to produce secondary pollution. Therefore, the covering requirements for the following procedures in the construction site are defined.
1. Requirements for muck covering in pile foundation engineering
Radius and periphery of working face of pile driver10-15mScope of the site, can not cover; The site should be paved with temporary roads, and the roads should be kept clean.
2. Requirements for muck coverage of foundation pit (trench) engineering
In the process of foundation pit (trench) excavation, the bottom of foundation pit may not be covered; If the foundation pit (groove) is sloping, the slope may not be covered; Parts involved in safety observation may not be covered; Hardened channels should be laid on the upper and lower ramps of the foundation pit, and the channels should be kept clean without covering the ramps; The wet muck can be stored in the shield tunnel section and the soil pit of the mining method tunnel without covering.
3. Requirements for muck coverage of municipal road engineering
Filler soil, waste soil and lime soil piled on site shall be covered; Earthwork or lime-soil subgrade shop48After hours, it has not been compacted, or the surface layer is dry and loose with dust after compaction, which should be covered; Water-stable inorganic binder base, after compaction, the surface layer is dry, loose and dusty, which should be covered; Effective dust prevention measures should be taken when dust-prone operations such as lime-soil mixing, pavement unification, cutting and chiseling are carried out.
4. Requirements for muck coverage of earthwork backfilling and greening in the later period.
Radius and periphery of mechanical working surface10-15mScope of the site, can not cover; After stopping the operation or after the completion of the operation, it should be in48Covering in time within hours.
5. Coverage requirements along the ground of high-speed rail or subway
In the construction site near the high-voltage catenary of high-speed rail or subway, the dust-proof net may be moved by typhoon, tornado and other forces, which may affect the safety of the high-voltage catenary. It is not appropriate to cover it with dust prevention net (refer to the relevant regulations of railway and subway protection zones for the safety distance), and it is appropriate to plant vegetation to achieve the effect of greening and solid settlement.
attachment2
Emergency control exemption process scope
On the premise of achieving excellent evaluation according to the Construction Site Dust Prevention and Control Inspection Scoring Form (see the attachment of Jiangsu Province Construction Site Dust Special Control Work Plan for details), the following procedures are exempted:
A, the main body and foundation construction
Underground waterproof construction, underground continuous wall grooving, scaffolding, formwork support and erection, steel binding, prestressed tensioning, component hoisting, lifting equipment dismantling, internal wall masonry, steel structure construction except painting, etc.
Second, building decoration and energy saving
Curtain wall installation, external wall plastering, external wall waterproofing, external wall thermal insulation, interior decoration and assembly decoration, etc.
Third, the building roof
Roof paving, waterproof and thermal insulation construction, etc.
Four, building water supply, drainage and heating
Water supply, drainage and heating construction of buildings other than ground-breaking operations such as outdoor trench excavation and backfilling.
Five, outdoor gardens and supporting facilities
Outdoor gardens and supporting line erection, installation, construction, etc. except ground-breaking operations such as outdoor trench excavation and backfilling.
VI. Urban Rail Transit Project
Underground excavation construction (shield, mining method), electricalSystem installation, underground track laying andConstruction requiring continuous operation due to the safety of process or surrounding environment and its upstream and downstream supporting operations.
Seven, municipal road and bridge engineering (including elevated section of track engineering)
Steel processing, formwork support, prestressing tendon tensioning and hole grouting, beam and slab hoisting and installation, etc.
Eight, pipeline engineering (including drainage, heating, gas, etc.)
Pipe jacking operation, trenchless pipeline repair construction, etc.
Nine, prefabricated buildings
The prefabricated assembly rate meets the Comprehensive Evaluation Standard for Assembled Buildings in Jiangsu Province (DB32/T 3753-2020) limit requirements of prefabricated building engineering construction (above the ground), etc.
X. Others
Water supply engineering, power supply engineering, electrical installation engineering construction, etc.; Road rescue projects due to road surface collapse or possible collapse accidents, emergency repair construction of drainage, heating and gas pipelines, etc.
attachmentthree
"Six hundred percent" implementation reference suggestions
First, the enclosure around the construction site is closed
oneConstruction sites in urban areas and built-up areas should choose enclosure types according to engineering characteristics to ensure enclosure tightness. Time limit exceededsixA month and don’t need to change frequently, should adopt a fixed enclosure with a closed bottom; Time limit for a project issixTemporary enclosures such as water yards can be used for those less than a month or those that need to be changed frequently on site.
2. Before the demolition, the demolition part shall be closed and fenced at the expropriation site where the household relocation is completed.
Second, the material stacking cover
one.Set up a special stacking area for easy-to-dust materials, so as to take them as you use them and cover them as you use them.
2Set up temporary garbage storage yard reasonably, and pile up construction garbage in a centralized and classified way.24If it cannot be removed in time within hours, dust prevention measures such as 100% coverage and sprinkling water shall be taken.
threeWet soil may not be covered, and the dried soil shall be cleaned, transported, turned over or covered in time. About wet soil (moisture content>5%) can be confirmed by observing that there is no obvious dust on the surface, squeezing free water or being able to twist and shape.
Three, earthwork excavation wet operation
oneDuring earthwork excavation, sufficient fog gun dust suppression equipment should be equipped, and the road should be cleaned, but water and ice should be prevented from causing potential safety hazards.
2For wet soil that does not produce dust, water spraying or spraying is not required. The specific judgment method is the same as above.
Fourth, pavement hardening
oneTemporary hardened pavement on the construction site shall be cast-in-place concrete or prefabricated panels that can be recycled.
2In the foundation construction stage, it is suggested to use temporary steel plates with satisfactory rigidity to harden the pavement, but it should be ensured that the temporary roads do not slip, dislocate or be damaged in use, and should be replaced in time after being damaged.
Five, in and out of the vehicle cleaning
one. All the body and wheels of engineering vehicles leaving the construction site should be cleaned, and equipped with automatic washing facilities. Only after washing can they enter the social road.
2Use information technology to strengthen supervision. For the construction site where the site conditions permit, it should be required to be equipped with vehicle unwashed capture equipment or video surveillance, and the relevant data should be pushed to the regulatory authorities with law enforcement power.
Six, muck vehicles closed transportation
Accelerate the upgrading of muck transport vehicles, and gradually force the use of closed muck transport vehicles (recommendedPvcFlat-push sealing mode) to solve the problems of vehicle overload, spilling and dripping.