In order to further promote the construction of sponge cities in Guangdong Province, enhance the ability of urban drainage and waterlogging prevention, improve the urban water ecological environment and living environment, expand effective investment in public goods, and promote the sustainable development of the city, the General Office of the people's Government of Guangdong Province recently issued implementation opinions on promoting the construction of sponge cities.

Recently, the Guangdong Provincial People's Government Office on promoting the implementation of the sponge city construction opinions have been issued. The specific contents are as follows:

The municipal people's governments at or above the local level, the people's governments of all counties (cities, districts), all departments of the provincial government, and all directly affiliated institutions:

In order to thoroughly implement the "Guiding Opinions of the General Office of the State Council on Promoting the Construction of Sponge Cities" (Guo Ban Fa [2015] No. 75), further promote the construction of sponge cities in our province, enhance urban drainage and waterlogging prevention capabilities, and improve urban water ecological environment and human settlements Environment, expand effective investment in public products, and promote sustainable urban development, with the consent of the Provincial People's Government, the following implementation opinions are hereby proposed:

General 1. requirements

(I) work objectives

Through the construction of sponge cities, comprehensive measures such as "infiltration, stagnation, storage, purification, use, and drainage" are adopted to minimize the impact of urban development and construction on the ecological environment, and more than 70% of the rainfall will be absorbed and utilized locally. By 2020, more than 20% of the urban built-up area will meet the target requirements; by 2030, more than 80% of the urban built-up area will meet the target requirements. The province's drainage and waterlogging prevention capabilities have been effectively improved, the problem of urban waterlogging has been basically solved, ecological spaces such as mountains, rivers, forests, fields and lakes have been effectively protected, and water ecology, water resources, water environment, and water safety have been comprehensively improved.

(II) basic principles

Adhere to the ecological, natural cycle. Following the concept of respecting nature, conforming to nature, and protecting nature, combining natural means with artificial measures to realize the natural accumulation, natural infiltration, natural purification and sustainable water cycle of rainwater, improve the self-healing ability of the water ecosystem, and maintain the city Good ecological function.

Adhere to the planning lead, overall construction. Give full play to the leading role of planning, first planning and then construction, set up sponge city construction control indicators in all levels of the city and related professional planning, improve technical standards and specifications, scientifically delineate urban blue and green lines, and implement source emission reduction, process control, System governance.

Adhere to local conditions, classification and promotion. Combined with the characteristics of meteorology, hydrology and geology in Lingnan area, rainwater control and utilization technology are selected according to local conditions. Problem-oriented, classified to carry out the construction of sponge cities in new and old urban areas, effectively solve the problems of urban waterlogging, water shortage, water environment deterioration, water ecological damage and so on.

Adhere to government guidance and social participation. Give full play to the decisive role of the market in allocating resources and the government's regulatory and guiding role, increase policy support, and create a good development environment. Actively promote the government and social capital cooperation (PPP), franchise model, to attract social capital to participate in the construction of sponge city.

2. strengthen planning lead

(III) to carry out a comprehensive census of the status quo

Cities at or above the county level shall conduct a comprehensive survey and register the relevant contents of sponge cities such as flood-prone points, drainage and waterlogging infrastructure, water area, green space coverage, road hard-bottomed, black and smelly water bodies in the built-up area. Find out the existing rainwater holding capacity, combine the latest local meteorological, hydrological, urban surface and other data, edit or compile the rainstorm intensity formula, study the rainstorm design rain type, conditional city should be divided into areas to formulate the rainstorm intensity formula, in accordance with the principle of the balance of rain and water consumption, reasonable allocation of storage facilities.

(IV) scientific planning

The urban and rural planning department of the urban people's government, together with the construction, municipal, garden, water and other departments, is responsible for the preparation of the sponge city special plan. The sponge city special plan will be completed before the end of October 2016, and it will be announced after approval by the people's government at the same level, and reported to the province The Department of Housing and Urban-Rural Development for the record. The special plan should be based on the rainfall, soil, topography and other factors and economic and social development conditions of each city, comprehensively consider the current situation and construction needs of water resources, water environment, water ecology, water security, etc., and study and propose the natural space that needs to be protected. Pattern, clarify and refine the goals of the total annual runoff control rate of rainwater, and determine the focus of sponge city construction in the near future. After the special planning is approved, when preparing or modifying the overall urban planning, the total annual runoff of rainwater should be included in the overall urban planning, and the natural ecological spatial pattern proposed in the special planning should be taken as the control element of its spatial development; when preparing or modifying the regulatory detailed planning, the indicators such as the total annual runoff control rate of rainwater should be implemented; the special planning of urban roads, green spaces, water systems, drainage and waterlogging prevention should be prepared or modified, should be fully connected with the sponge city special planning.

(V) strict implementation of planning

The sponge city construction requirements such as rainwater collection and utilization, permeable area, blue line delimitation and protection of buildings and residential areas are taken as the pre-conditions for urban planning permission and project construction, and the characteristics of rainwater runoff are generally consistent before and after urban development and construction. In the construction project construction drawing review, construction permit and other links, the sponge city related engineering measures should be taken as the key review content; in the project completion acceptance report, the implementation of the sponge city related engineering measures should be stated and submitted to the approval authority for the record.

(VI) improvement of standards and specifications

According to the "Sponge City Construction Technical Guide-Low Impact Development Rainwater System Construction (Trial)" issued by the Ministry of Housing and Urban-Rural Development and related standards and specifications, combined with the actual conditions of rainfall characteristics, geological conditions, and water environment in our province, research and formulate suitable for Guangdong Province The characteristics of the sponge city construction technical specifications. All levels of the city should be based on local conditions, the development of sponge city construction technical guidelines, research and preparation of relevant engineering construction standard atlas and technical guidelines.

3. overall planning to carry out construction

(VII) overall planning to promote the construction of sponge city in new and old urban areas

All localities should combine the actual situation, start with the most urgent water environment problems, and coordinate the promotion and systematic development of sponge city construction. All new urban areas, all kinds of parks and development zones in the province should fully implement the requirements of sponge city construction, take plots as units, and improve the control rate of runoff and rainwater; under the same rainfall conditions, new construction and reconstruction projects shall not increase the total amount of rainwater discharged. The old urban areas should combine the transformation of urban shantytowns, the transformation of dilapidated houses in urban and rural areas, and the organic renewal of old residential areas, so as to solve the problems of urban waterlogging, rainwater collection and utilization, and the treatment of black and smelly water bodies, so as to promote the overall treatment of the region, and gradually realize the relief of light rain without water accumulation, heavy rain without waterlogging, water bodies without black and odor, and heat island.

(VIII) Promote the Construction of Sponge Green Space System

Strengthen the connection between the construction of urban green space system and the surrounding terrain, water system, roads and municipal facilities, comprehensively consider the vertical design of terrain and drainage, and adopt various low-impact development and construction measures such as sunken green space, rain garden, grass planting ditch and constructed wetland according to local conditions, so as to enhance the water absorption capacity of the green space system, provide rainwater retention and slow release space, and reduce the pollution of urban water body by surface runoff. Focus on the construction of rainwater storage and utilization facilities in the park green space, and improve the proportion of permeable pavement on the ground such as walking system and square in the park green space.

(IX) Promote the Construction of Sponge Road and Square

Change the concept of road and square construction, change the traditional practice of rainwater fast drainage and straight drainage, and improve the infiltration, stagnation and storage capacity of urban roads and squares to rainwater. On the basis of meeting the basic functions of road traffic safety, the new urban roads should make full use of the surrounding green space and enhance the function of the green belt to absorb and purify rainwater. The non-motorized lanes, sidewalks, pedestrian streets and parking lots of new urban roads are promoted to use permeable pavement. The newly-built city square can adopt sunken structure or build rainwater regulation and storage facilities according to local conditions to minimize rainwater runoff. Encourage existing roads and squares to carry out sponge transformation in a planned way in accordance with the requirements of low-impact development and control objectives.

(X) Promote the Construction of Sponge Community and Buildings

Measures such as green roofs, rainwater storage and collection and utilization, and permeable pavement are promoted for new residential areas and buildings to improve the rainwater storage and retention capacity of buildings and residential areas; low-impact development and renovation of existing buildings and residential areas are encouraged. The construction of various large-scale public projects such as government agencies, schools, hospitals, cultural and sports venues, transportation stations, and commercial complexes must take the lead in implementing the requirements for sponge city construction. Projects with a construction area of more than 20000 square meters must be equipped with rainwater tanks and reservoirs. Waiting for rainwater collection and utilization facilities.

(11) Promoting the Construction of Urban Ecological Water Network

Strengthen the protection and restoration of natural water bodies such as urban ponds, rivers and lakes, and wetlands, and prohibit construction activities that damage the water ecological environment, such as filling lakes for land, cutting bends and straightening, and hardening rivers. All localities should establish a monitoring system for the area of urban water areas. After the development and construction of the project, it should be ensured that the area of water areas will not be reduced, and the damaged water system should be gradually restored to its original state. By 2020, the water area rate of cities in the Pearl River Delta and coastal areas will not be less than 10%, and that of mountainous cities will not be less than 6%. Restore and maintain the natural connectivity of river and lake water systems, build a virtuous urban water cycle system, and gradually improve the quality of the water environment. By 2020, the black and odorous water bodies in urban built-up areas will be controlled within 10%, of which the black and odorous water bodies will be basically eliminated in Guangzhou and Shenzhen urban built-up areas. Combined with water conservancy planning, strengthen river regulation, transform canalized river channels, reshape healthy and natural curved river banks, and under the premise of ensuring flood control safety, carry out ecological restoration of the shoreline of urban river and lake water systems to meet the requirements of blue line control and restore its ecological functions. Actively explore the construction mode of clean small watershed in the process of urbanization, take small watershed as a unit, control soil erosion and non-point source pollution from the source, and implement simultaneous treatment of soil erosion, sewage, environment and river channels. Strengthen the overall coordination of urban pipe network and river network, and establish a three-level drainage system with effective connection and system linkage of rivers, rivers and municipal drainage systems.

(XII) Improvement of drainage and waterlogging prevention facilities

Vigorously promote the construction of urban drainage and waterlogging prevention facilities to meet the standards, and accelerate the transformation and elimination of urban waterlogging-prone points. We will step up the construction of urban drainage and waterlogging prevention facilities to meet the standards, and the old urban areas should gradually carry out the replacement and repair of diseased pipelines on the basis of the general survey of drainage pipelines, appropriately raise the construction standards, and strengthen the transformation of rain and sewage diversion. do a good job in the organic connection between the rainwater pipe network system and the surrounding sponge. Strengthen the control of initial rainwater pollution, carry out shoreline purification of rainwater discharged into natural water bodies, encourage the construction of initial rainwater treatment facilities in areas where conditions permit, and strictly control the entry of pollutants from surface runoff into the drainage system. Speed up the construction and improvement of shoreline intercepting main pipes to control sewage overflow pollution. Gradually improve the standards of urban drainage and waterlogging prevention. The central urban areas of Guangzhou and Shenzhen should effectively deal with rainstorms not less than the standard of once in 50 years, and other prefecture-level urban areas should effectively deal with rainstorms not less than the standard of once in 30 years. The central urban areas of cities should effectively deal with rainstorms not less than the standard of once in 20 years.

4. improve support policies

(XIII) Innovative construction and operation mechanism

Distinguish the operating and non-operating attributes of sponge city construction projects, establish a cooperation mechanism between the government and social capital risk sharing and income sharing, and adopt various forms such as clear operating income rights, government purchase of services, and financial subsidies. Promote the use of government and social capital cooperation (PPP) model, bundle and package projects, and guide social capital to participate in the construction and operation management of sponge city projects. Encourage powerful planning and design units, construction enterprises, and manufacturing enterprises to cooperate with financial capital, and use general contracting and other methods to coordinate the implementation of sponge city construction related projects to give full play to overall benefits.

(14) Increase government investment

Actively seek subsidies for relevant special funds from the central government. Make good use of the existing channels of provincial finance to support the construction of sponge cities. The municipal governments of all cities should further increase the investment in sponge city construction, give priority to sponge city construction projects in the medium-term financial planning and annual construction plan, and include them in the scope of local government procurement.

(xv) Broadening investment and financing channels

We will strengthen the docking with financial institutions such as the China Development Bank and the Agricultural Development Bank, and make full use of preferential policies such as low-cost, medium-and long-term special loans. Support eligible enterprises to raise funds through the issuance of corporate bonds, corporate bonds, asset-backed securities and project income notes for sponge city construction projects.

5. organization and implementation

(XVI) Strengthening organizational leadership

As the main body of responsibility for the construction of a sponge city, the urban people's government must effectively strengthen the organization and leadership, clarify the competent department, improve the working mechanism, coordinate the planning and construction, and promptly start the implementation. The Provincial Department of Housing and Urban-Rural Development shall, in conjunction with relevant departments, establish an inter-departmental joint meeting system to promote the construction of sponge cities, and strengthen the guidance, supervision and inspection of the construction of sponge cities. All relevant departments should strengthen coordination and cooperation and jointly promote the construction of sponge city. All localities and relevant departments should vigorously publicize the concept of sponge city construction and create a social atmosphere for building a better home.

(xvii) Strengthening project management and performance appraisal

The municipal governments of all cities should promptly formulate construction plans, rolling plans and annual construction plans for key areas of sponge city construction in the near future, establish a sponge city project reserve system, and do a good job in filling in the information system of the sponge city construction project database of the Ministry of Housing and Urban-Rural Development. Apply for national and provincial sponge city pilot projects. The relevant departments of the province should organize and carry out the pilot demonstration work of sponge city at the provincial level, organize the cities to carry out the performance evaluation and assessment of sponge city in accordance with the requirements of the Ministry of Housing and Urban-Rural Development, set up a provincial sponge city construction expert database, and carry out professional training on sponge city construction.

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