Chengdu Airport University Health Industry Development Co., LTD. "Chengdu Tongchuang Valley Industry and City Integration Project Environmental Impact Report" (draft for comments) has been prepared. The draft for soliciting Comments is now publicized and widely solicited from the public. Please express your views on the environmental issues you are concerned about. Your valuable comments and suggestions are welcome.

I. Links to the full text of the environmental Impact report and ways and means of accessing the paper report:

1. Full text link:

See Annex 1 for details.

2. Ways and means of checking paper reports:

The public can obtain access to the construction unit by telephone, letter, E-mail and other means.

2. Public scope for soliciting opinions

The scope of this public comment solicitation includes units (groups) and individuals directly or indirectly affected by the construction of the project, and units (groups) and individuals concerned about the construction of the project.

3. Internet link to the public comment form

See Annex 2 for details.

4. Ways and means for the public to express their views

Public comments and views on this project, please forward to us by telephone, fax, email, letter, etc., and please attach your contact information for further communication and reply.

(1) Company name: Chengdu Airport Health Industry Development Co., LTD

(2) Address: No. 500, Hangshu Avenue, Shuangliu District, Chengdu

(3) Contact person: Mr. Que

(4) Contact number: 19180515795

(5) Email: 804368802@qq.com

5. The starting and ending time for public comments

The time for the public to submit opinions is 10 working days from the date of publication.

On August 25, 2023

Chengdu airport big health industry development co., LTD

Chengdu Airport Health Industry Development Co., Ltd. Chengdu Tongchuang Valley industry and city integration project

Environmental impact assessment draft

I. Project name, nature and construction site

(1) Construction project name: Chengdu Tongchuang Valley Industry and City Integration Project

(2) Construction unit: Chengdu Airport Health Industry Development Co., LTD

(3) Nature of construction project: new construction

(4) Project construction site: Groups 8, 9 and 10, Fenghuang Community, Yongan Town, Shuangliu District (within the planning scope of Chengdu Tianfu International Biological City)

(5) Total investment: 33369531 million yuan

Ii. Main construction contents and scale of the project

Construction of standard plant (16), wastewater treatment station (2500m3/d) and other supporting facilities and other structures.

Iii. Main construction contents and project composition

Project composition and main environmental problems are shown in the following table:

Table 1 Project composition and main environmental issues

category		Construction content and scale	Major environmental problem
			Construction period	Operation period
Main body	Industrial plant 1	The base area is 3577.03m2, the building area is 34908.25m2, 18F, underground 1F, and the height is 82.2m	Construction waste gas	Waste gas, solid waste, waste water (later introduction of enterprises need to separate environmental assessment, production process content is not within the scope of this evaluation)
	Industrial plant 2	The base area is 1632.64m2, the building area is 18909.43m2, 13F, underground 1F, high 59.7m
engineering	Industrial plant 3	The base area is 3047.88m2, the building area is 9121.21m2, 5F, underground 1F, and the height is 22.4m	Construction wastewater
	Industrial plant 4	The base area is 3967.80m2, the building area is 20692.95m2, 6F, underground 1F, and the height is 36.3m
	Industrial plant 5	The base area is 1933.71m2, the building area is 10893.32m2, 6F, underground 0F, and the height is 36.3m	Construction noise
	Industrial plant 6	The base area is 8643.62m2, the building area is 60757.75m2, 10F, underground 1F, and the height is 59.1m
	Industrial plant 7	The base area is 7139.96m2, the building area is 58528.26m2, 10F, underground 0F, and the height is 59.1m	Construction waste
	Industrial plant 8	The base area is 1796.22m2, the building area is 14994.85m2, 9F, underground -1F, and the height is 53.6m
	Industrial plant 9	The base area is 4206.74m2, the building area is 21484.04m2, 6F, underground 0F, and the height is 36.3m	Production wastewater
	Industrial plant 10	The base area is 3142.55m2, the building area is 37060.11m2, 14F, underground 1F, and the height is 64.0m
	Industrial plant 11	The base area is 3967.80m2, the building area is 21671.39m2, 6F, underground 1F, and the height is 36.5m	Domestic sewage
	Industrial plant 12	The base area is 4806.74m2, the building area is 22503.29m2, 6F, underground 0F, and the height is 36.3m
	Industrial plant 13	The base area is 4984.88m2, the building area is 28768.05m2, 9F, underground 0F, and the height is 53.6m	Domestic garbage
	Industrial plant 14	The base area is 6488.92m2, the building area is 51776.79m2, 9F, underground 0F, and the height is 53.6m
	Industrial plant 15	The base area is 6868.23m2, the building area is 80128.10m2, 12F, underground 0F, and the height is 70.7m
	Industrial plant 16	The base area is 3920.56m2, the building area is 26768.05m2, 9F, underground -1F, and the height is 53.6m
storage	Dangerous goods warehouse	Located in the southeast side of the north block of the factory, it covers an area of 640m2, building area of 640m2, 1F, and height of 5.1m.		Environmental risk
ENGINEERING
subsidiary	Mess hall	Located on the negative ground floor, it can accommodate 1284 people (650 people in the north plot, 634 people in the south plot)		Canteen fume, canteen waste water, kitchen waste
ENGINEERING
public	Water supply	From the municipal water supply network of the park, there are 2 municipal water supply inlet pipes (the north and south plots are independent, and they are both 2 municipal inlet pipes), the pipe diameter is DN250, and the water pressure is about 0.20Mpa (relative to the Yellow Sea elevation 504.70). The water supply of each structure is connected to the outdoor water supply network, and the vertical partition water supply system is adopted.		/
	Drain water	The drainage system of rain and sewage diversion, production and domestic drainage diversion is adopted.		Waste water
ENGINEERING	Power supply	The 10kV power cable is attracted by the superior municipal opening and closing, and the cable is laid in the factory by cable trench or direct burial.		/
	Air supply	It is supplied by the municipal gas supply network.		/
	Underground garage	Located on the south and north sides, underground -1F, the area is 34013.54m2 and 36675.00m2 respectively.		Noise, car exhaust
Environmental protection project	Waste water	Pretreatment tank: Each plot is equipped with 1 pretreatment tank (grille sludge tank, 50m3) to treat domestic sewage, which is located in the east side of the plant boundary.		Sludge and wastewater
		Grease trap: One set of automatic oil-water separator (with heating and lifting) is set in the south and north canteens, with a volume of about 7m3.		Waste water, oil pollution
		Wastewater treatment station: Set up a buried wastewater treatment station with a treatment capacity of 2500m3/d, and adopt the process of "grid + regulating tank + hydrolytic acidification + sedimentation tank + secondary AO+ secondary sedimentation tank + Fenton oxidation + coagulation sedimentation + disinfection". The design effluent water quality is the tertiary standard requirements of the Comprehensive Sewage Discharge Standard (GB8978-1996) and the relevant standards in the Water Quality Standard of Sewage discharged into Urban Sewers (GB/T31962-2015). The treated wastewater enters the Biological city sewage treatment plant through the municipal pipe network, and then enters the Jinjiang River.		Sewage, foul smell
		Accident pool: Set up an accident pool with a volume of about 2758.86m3, which is mainly used to collect the leakage and fire fighting wastewater when the hazardous chemicals warehouse leaks.		Environmental risk
	Exhaust gas	Deodorizing device: This project plans to set up a set of alkaline washing + washing + activated carbon adsorption + low temperature plasma purification system for the odor of waste water treatment station. After the waste water treatment station is sealed, the odor collection air pipe will send the odor to alkali washing + water washing + activated carbon adsorption + low temperature plasma purification system for treatment (collection efficiency of more than 98%, purification efficiency of 90%, air volume 10000m3/h), and after treatment, it will be discharged through the exhaust port on the roof of Building 9 (height 58.7m from the ground).		stench
		Canteen lampblack purifier: The lampblack exhaust gas generated by the canteen is processed by the lampblack purifier and collected from the flue to the top floor for high-altitude emission.		Exhaust gas
	noise	Low noise equipment is selected for the external unit of the air conditioner, the partition of the external unit is made of soundproof material, the foundation is equipped with rubber vibration isolation pad or the installation of damping spring shock absorber, and the noise value is lower than 60dB after attenuation by means of noise reduction treatment in the inlet and outlet. The fan is equipped with a shell cover for sound insulation, noise reduction and rain protection measures.		noise
	Solid waste	Garbage stations: There are two in total, located at -1F. The garbage station on the south plot covers an area of 72.90m2, and the garbage station on the north plot covers an area of 70m2, which is used for temporary storage of domestic garbage.		Solid waste
	Groundwater seepage control	Key impermeable areas: wastewater treatment station (including sludge dewatering room), hazardous chemical storage, accident tank for key impermeable, impermeable technical requirements are: In accordance with the requirements of the key impervious areas of the Technical Guidelines for Environmental Impact Assessment - Groundwater Environment (HJ610-2016), P6 grade impervious concrete with a thickness of 30cm equivalent to the clay impervious layer with a thickness of Mb=6m and a permeability coefficient of K≤10-7cm/s is used for impervious protection (permeability coefficient K=0.49×10-8cm/s).		/
		General impermeable area: pretreatment tank, grease trap, garbage station, etc. Anti-seepage technical requirements are: According to the Technical Guidelines for Environmental Impact Assessment - Groundwater Environment (HJ610-2016), the general impermeable zone shall be protected with P4 grade impermeable concrete of 20cm thickness equivalent to the clay impermeable layer with thickness Mb=1.5m and permeability coefficient K≤10-7cm/s (permeability coefficient K=0.78×10-8cm/s).		/
		Simple impervious areas: fire pools, shift dormitories, and factory roads are listed as simple impervious areas, and the ground is hardened with general cement.		/
Office life	Shift dormitory	Shift dormitory 2, 3F, construction area of 31741.07 m2 and 39636.35 m2 respectively.		Domestic sewage, domestic garbage

Iv. An overview of the possible environmental impacts of the project

1. Exhaust gas

This project does not involve the production and business activities related to the specific introduction of the project, and the introduction of industrial enterprises need to be assessed separately. This project is a supporting wastewater treatment station project. During operation, the waste gas is mainly foul odor (ammonia, hydrogen sulfide, NMHC, etc.).

2. Waste water

The wastewater during the operation period of this project is mainly office and domestic sewage and production wastewater of the enterprise to be settled.

3. Noise

The noise in the operation process of this project mainly comes from the noise of various pumps, fans, air compressors and other aerodynamic and mechanical equipment, and the noise intensity is about 70 ~ 85dB (A).

4. Solid waste

The solid waste in this project mainly includes hazardous waste, waste to be identified and general solid waste. Hazardous waste mainly includes waste activated carbon, etc. The waste to be identified is mainly sludge from wastewater treatment station. General waste mainly includes office household waste, sludge in pretreatment tank, kitchen waste and waste grease in grease trap, etc.

5. Key points of countermeasures and measures to prevent or mitigate adverse environmental impacts

1. Exhaust gas

The waste gas of the project mainly consists of canteen smoke, production waste gas, and odor of waste water treatment station. The production waste gas shall be evaluated by the environmental impact assessment of the industrial enterprises to be introduced, and the waste gas generated by them shall be collected and treated strictly and discharged to meet the standards. The canteen lampblack is to be installed with lampblack purification facilities. After the lampblack is treated, it will be discharged through the roof of the special flue; The waste water treatment station is completely closed, and the odor is collected and transported to the waste gas treatment system (alkali washing + water washing + activated carbon adsorption + low temperature plasma purification system) through the pipeline, and then discharged through the roof exhaust port of Building 9 (58.7m above the ground).

After the above waste gas is treated by their respective treatment systems, the hydrogen sulfide, ammonia and NMHC of this project can meet the requirements of "Table 2 Special emission limits of air pollutants" in the "Emission Standards for Air Pollutants of Pharmaceutical Industry" (GB 37823-2019); Canteen lampblack can meet the 2 mg/m3 standard limit in the "lampblack Emission Standard for Catering Industry" (GB18483-2001).

2. Waste water

The wastewater of this project is divided into two categories: production-related wastewater and office and domestic wastewater. The production-related wastewater is mainly the production wastewater generated by the enterprises to be settled in the project. After being treated by the supporting wastewater treatment facilities of the project, the wastewater of the project enters the municipal sewage network of the Bio-City Park through the main sewage outlet. After treatment by the office domestic sewage pretreatment facility of the project, the project wastewater enters the municipal sewage network of the Bio-City Park through the main drainage outlet, and then enters the Bio-city sewage treatment plant for treatment, and finally enters the Jinjiang River.

A wastewater treatment station is set up in this project. The wastewater treatment system adopts the process of "grid + regulating tank + hydrolytic acidification + sedimentation tank + secondary AO+ secondary sedimentation tank + Fenton oxidation + coagulation precipitation + contact disinfection", and the designed treatment capacity is 2500m3/d. In addition, a small amount of high-concentration wastewater in this project needs to be pre-treated by the "micro-electrolysis + catalytic oxidation" process and then transferred into the comprehensive wastewater. After the effluent treated by the sewage treatment station reaches the third level standard of "Comprehensive Sewage Discharge Standard" (GB8978-1996) and the relevant standards of "Water Quality Standard of Sewage discharged into Urban Sewers" (GB/T31962-2015), it is then discharged into the Jinjiang River through the sewage network for centralized treatment in Bicheng sewage treatment plant.

3. Noise

All kinds of pumps in this project are arranged in a closed workshop, and strict noise reduction measures are taken. Fan inlet and outlet on the roof

Add flexible soft connector, exhaust fan shell is provided with sound insulation cover.

4. Solid waste

The solid waste in this project mainly includes hazardous waste, waste to be identified and general solid waste. Hazardous waste mainly includes waste activated carbon, etc., which is directly sent to qualified units for treatment; The waste to be identified is mainly the sludge of wastewater treatment station. The hazardous characteristics of the sludge of wastewater treatment station should be identified regularly. If the identification result is determined to be hazardous waste, it should be disposed of by the unit qualified for hazardous waste treatment. If it is identified as general solid waste, it shall be handed over to the corresponding unit for resource and harmless disposal; The general waste mainly includes office household waste, pretreatment tank sludge, kitchen waste and grease waste in grease trap, etc. The office household waste and sewage treatment system sludge are uniformly removed by the municipal sanitation department; Kitchen waste and grease waste from grease traps shall be disposed of by units qualified for disposal of kitchen waste.

5. Groundwater

In order to avoid the impact of the project operation on the groundwater environment, the EIA requires the construction of the project to take zoning anti-seepage measures, set up key anti-seepage zone, general anti-seepage zone and simple anti-seepage zone.

Key impermeable areas: waste water treatment stations, accident ponds, dangerous goods chemical storage are listed as key impermeable areas. The wastewater treatment station shall use P6 grade impervious concrete of 30cm thickness equivalent to the clay impervious layer with thickness Mb=6m and permeability coefficient K≤10-7cm/s (permeability coefficient K=0.49×10-8cm/s) in accordance with the requirements of the key impervious areas of the Technical Guidelines for Environmental Impact Assessment - Groundwater Environment (HJ610-2016).

General impermeable area: Domestic sewage pretreatment tank, grease trap and garbage station are listed as general impermeable areas, which should be adopted with thickness Mb=1.5m in accordance with the requirements of "Technical Guidelines for Environmental Impact Assessment - Groundwater Environment" (HJ610-2016). The permeability coefficient K≤10-7cm/s clay impervious layer is equivalent to 20cm thick P4 grade impervious concrete for impervious protection (permeability coefficient K=0.78×10-8cm/s).

Simple impervious areas: shift dormitories, fire pools, and factory roads are listed as simple impervious areas, and the ground is hardened with general cement.

Since the standard factory building built in this project has not yet determined the settled enterprises, the pollutant generation path and pollutant category cannot be specified in this project, so this EIA does not put forward the seepage prevention requirements of the above structures, and the ground seepage prevention measures are determined according to the actual projects introduced by each structure.

Key points of the conclusions of the environmental impact assessment presented in the environmental impact report

Chengdu Tongchuang Valley Industrial and Urban Integration Project is located in Groups 8, 9 and 10, Fenghuang Community, Yongan Town, Shuangliu District, Chengdu (within the planning scope of Chengdu Tianfu International Biological City). The construction of the project is in line with the current national industrial policy and the local development plan. The pollution control measures to be taken by the project are economically feasible and technically reliable. Although its construction and operation process inevitably produces a certain amount of waste water, waste gas, noise and solid waste, but with its supporting environmental protection facilities, the choice of reasonable treatment plan, as long as the management is carefully strengthened, the implementation of environmental protection measures, fully meet the national and local environmental protection regulations and standards, the environmental impact is acceptable. At the same time, the environmental risk management measures of the project are effective and reliable, and environmental risks can be prevented and controlled. The project can recover and use resources as much as possible, strengthen management and daily monitoring, and meet the requirements of national and local environmental protection regulations and standards. On the premise that the project construction unit strictly implements the environmental protection measures proposed in this report, the site selection of the project is feasible from the perspective of environmental impact.

7. Ways and means for the public to express their opinions

During the publicity period, the public can put forward their opinions and views on the project construction and EIA work to the construction unit and EIA unit through telephone, fax, letter, E-mail, etc. In order to further understand the specific opinions and suggestions of the public, please provide detailed contact information as far as possible when expressing your opinions.

8. Starting and ending time for public comments

If you have any comments or constructive comments on the project construction or the EIA work, please give your comments within the publicity period of 10 working days on the date of this announcement.

Annex 2

Public comment form for environmental impact assessment of construction projects

Fill in the form date

Project name	Chengdu with the valley industry city integration project
1. This page is for public comments
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