Soil self-monitoring plan of Sichuan Wusheng Chunrui Pharmaceutical Chemical Co., Ltd.
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Soil self-monitoring plan of Sichuan Wusheng Chunrui Pharmaceutical Chemical Co., Ltd.
Soil self-monitoring plan of Sichuan Wusheng Chunrui Pharmaceutical Chemical Co., Ltd.
Sichuan Kaile Testing Technology Co., Ltd.
November 2018
1. Project Overview
1.1 Project background
In order to implement the "Notice of the Sichuan Provincial Environmental Protection Department on Doing a Good Job in the Self-Monitoring of the Soil Environment of Key Soil Pollution Supervision Units" (Chuanhuanbanhan [2018] No. 446), in accordance with the "Notice of the State Council on Issuing the Action Plan for Soil Pollution Prevention" (Guo Fa [2016] No. 31) and the requirements of the 2018 work plan. Starting from 2018, the enterprises included in the "List of Key Soil Pollution Supervision Units in Sichuan Province" that year shall carry out soil monitoring in accordance with the requirements of the national key unit soil self-monitoring technical guidelines. Self-monitoring work.
Entrusted by Sichuan Wusheng Chunrui Pharmaceutical and Chemical Co., Ltd., Sichuan Kaile Testing Technology Co., Ltd. prepared a soil self-monitoring plan to clarify the monitoring points, monitoring indicators and monitoring methods of the company's soil and groundwater, and provide support for later on-site sampling and report preparation.
1.2 Work content
The self-monitoring of the environment mainly includes the following three aspects:
(1) Pollution identification: Obtain basic information such as the distribution of all areas and facilities of the enterprise, and the production process of the enterprise through data collection, site surveys, and personnel interviews, and identify and judge the types of characteristic pollutants that may exist in the investigated enterprise.
(2) Sampling and monitoring: On the basis of pollution identification, according to the existing relevant national standards and guidelines, an investigation plan shall be formulated, and investigation sampling and laboratory analysis and testing shall be carried out. Set sampling points according to document requirements and the actual situation of the enterprise, and analyze and judge the actual pollution situation of the investigated enterprise through the analysis of the test results.
(3) Result evaluation: refer to the existing domestic evaluation standards and evaluation methods to determine the environmental quality of the soil and groundwater of the surveyed enterprise, whether there is pollution, and further determine the types of pollutants, pollution distribution and pollution degree, prepare annual monitoring reports and report to The society discloses monitoring information.
1.3 Investigation basis
1.3.1 Policies and regulations
1. "Environmental Protection Law of the People's Republic of China" (2014);
2. "Law of the People's Republic of China on Urban and Rural Planning" (2008);
3. "The 13th Five-Year Plan for National Environmental Protection";
4. "Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Waste" (revised in 2004);
5. "Decision on Implementing the Scientific Outlook on Development and Strengthening Environmental Protection" (Guo Fa [2005] No. 39)
6. "Opinions on Strengthening the Prevention and Control of Soil Pollution" (Huanfa [2008] No. 48);
7. "Notice of the State Council on Printing and Distributing Recent Soil Environmental Protection and Comprehensive Management Work Arrangements" (Guobanfa [2013] No. 7);
8. "Measures for the Environmental Management of Contaminated Lands (for Trial Implementation)" (implemented on July 1, 2017);
9. "Notice on Effectively Doing a Good Job in the Prevention and Control of Environmental Pollution in the Process of Enterprise Relocation" (Huanban [2004] No. 47);
10. "Notice of the State Council on Printing and Distributing the Action Plan for Soil Pollution Prevention and Control" (Guofa [2016] No. 31);
11. "Notice of the Sichuan Provincial People's Government on Printing and Distributing the Soil Pollution Prevention and Control Action Plan Sichuan Province Work Plan" (Chuan Fu Fa [2016] No. 63);
12. "Notice of Chengdu Municipal People's Government on Printing and Distributing the Work Plan for the Prevention and Control of Soil Pollution in Chengdu" (Chengfu Han [2017] No. 54);
13. "Guiding Opinions of the State Council on Strengthening the Prevention and Control of Heavy Metal Pollution" (Guobanfa [2009] No. 61);
14. "Notice on Ensuring Environmental Safety in the Redevelopment and Utilization of Industrial Enterprise Sites" (Huanfa [2012] No. 140);
15. "Notice on Strengthening the Pollution Prevention and Control Work in the Process of Shutdown, Relocation of Industrial Enterprises and Redevelopment and Utilization of Original Sites" (Huanfa [2014] No. 66);
16. "Notice of Chengdu Municipal Bureau of Land and Resources and Chengdu Municipal Environmental Protection Bureau on Implementation of Land Access Management for Blocks of Construction" (Chengguo Tuzifa [2017] No. 50);
17. "Notice of Sichuan Provincial Department of Environmental Protection on Doing a Good Job in the Self-Monitoring of Soil Environment by Key Soil Pollution Supervision Units" (Chuanhuanbanhan [2018] No.446);
18. Guang'an Environmental Protection Bureau "Notice on Completing the Soil Environment Self-Monitoring Work of Key Soil Pollution Supervision Units on Time" (Guangshi Huanfa [2018] No. 171, October 11, 2018);
19. Guang'an Environmental Protection Bureau "Notice on Printing and Distributing the List of Key Supervision Units of Provincial and Municipal Control Soil Pollution in Guang'an City in 2018" (Guangshi Huanfa [2018] No. 188, October 26, 2018).
1.3.2 Technical Specifications
1. "Technical Guidelines for Site Environmental Investigation" (HJ25.1-2014));
2. "Technical Guidelines for Environmental Monitoring of Contaminated Sites" (HJ25.2-2014);
3. "Technical Guidelines for Risk Assessment of Contaminated Sites" (HJ25.3-2014));
4. "Technical Guidelines for Soil Remediation of Contaminated Sites" (HJ25.4-2014);
5. "Terms of Contaminated Sites" (HJ682-2014);
6. "Guidelines for Environmental Investigation, Assessment and Restoration of Industrial Enterprise Sites (Trial)" (Ministry of Environmental Protection, 2014);
7. "Technical Specifications for Soil Environmental Quality Assessment (Draft for Comment)" (Ministry of Environmental Protection, 2015);
8. "Technical Specifications for Soil Environmental Monitoring" (HJ/T 166-2004);
9. "Technical Specifications for Groundwater Environmental Monitoring" (HJ/T 164-2004);
10. "Code for Geological Survey and Evaluation of Groundwater Pollution" (DD2008-01);
11. "Surface Water Environmental Quality Standard" (GB3838-2002);
12. "Technical Regulations for the Preservation and Management of Water Quality Sampling Samples" (HJ493-2009);
13. "Guide to Water Quality Sampling Technology" (HJ494-2009);
14. "Technical Regulations for the Design of Water Quality Sampling Plan" (HJ495-2009);
15. "Technical Specifications for Sampling and Sample Preparation of Industrial Solid Wastes" (HJ/T20-1998);
16. "Identification of Major Hazard Sources of Hazardous Chemicals" (GB18218-2009);
17. "Technical Guidelines for Soil Environmental Investigation and Assessment of Construction Land" (Ministry of Environmental Protection Announcement No. 72, 2017);
18. "Technical Guidelines for the Self-Monitoring of Soil Environment of Key Enterprises in Beijing" (Interim);
19. "Technical Guidelines for Investigation and Risk Assessment of Volatile Organic Compounds in Contaminated Sites" (DB11/T 1278).
1.3.3 Evaluation Criteria
1. "Soil Environmental Quality Standards" (GB 15618-1995);
2. "Groundwater Quality Standard" (GB/T 14848-2017);
3. "Surface Water Environmental Quality Standard" (GB 3838-2002);
4. "Soil Environmental Quality Construction Land Soil Pollution Risk Control Standard (Trial)" (GB 36600-2018);
5. "Soil Environmental Quality Agricultural Land Soil Pollution Risk Control Standards (Trial)" (GB 15618-2018);
6. "Site Soil Environmental Risk Assessment Screening Value" (DB50/T 723-2016);
7. "Environmental Background Value Data Manual" (1988);
8. "Chongqing Market Soil Environmental Risk Assessment Screening Value" (DB50/T 723-2016);
9. US EPA Regional Screening Level (RSL).
2. Regional overview
2.1 Location
Wusheng County is located in the southwest of Guang'an City, at the junction of Sichuan and Chongqing, at the junction of Nanchong, Suining, and Hechuan. It is 35 kilometers east of Guang'an, 70 kilometers west of Suining, 86 kilometers north to Nanchong, and 110 kilometers south to Chongqing. Kilometers, choke the throat of the east and south of Sichuan, the gateway to the collection and distribution of materials in Sichuan and Chongqing. Thousands of miles of Jialing River runs through the entire territory, winding for 117 kilometers. After the development of the Jialing River's golden waterway through the development of channelization, the thousand-ton fleet can go directly to Nanchong from Chongqing Chaotianmen via the county. National Highway 212 and Provincial Highway 304 crisscross the territory. County, township and village highways extend in all directions. 212 Expressway and Lanyu Railway will run through the border. Guang'an, Huaying, Qinghua, Nanchong, and Hechuan railway stations are adjacent to the surrounding areas.
This project is located in the central industrial park of Wusheng County Industrial Concentration Zone. It is 2.4km (by land) from the central town, about 800m in a straight line, and 8km from Yankou Town, Wusheng County. The geographic coordinates of the center position are 106°16′12.83″ E, 30°16′28.90″ N.
Three, company profile
3.1 Basic company information
Sichuan Wusheng Chunrui Pharmaceutical & Chemical Co., Ltd. is a wholly-owned subsidiary invested and established by Chongqing Chunrui Pharmaceutical & Chemical Co., Ltd. as the main investor. It is a private joint-stock enterprise with investment from Wusheng County. The company is registered in Wusheng County, Sichuan with registered capital 10 million yuan, located in the central industrial park of Wusheng County. The company was established in September 2007 with a total investment of 30 million yuan and an area of 100.08 acres. It is a joint-stock enterprise integrating the production and sales of pharmaceutical and chemical intermediates, mainly engaged in the research, development, production and sales of API intermediates and fine chemicals.
3.1.1 External environmental relations
The actual environmental conditions around the factory boundary are: the southeast partition wall of the project site is for the expansion of Kate Pharmaceuticals; the road to the south (10m) is for Kate Pharmaceuticals (producing pharmaceutical intermediates); the road to the southwest and west of the park (10m) is Taichang Paper (recycling paper production), Hengxiang Paper (using waste paper to produce high-strength corrugated paper); the northwest is next to the relocated Tianzhao pig farm; the north and northeast have a center on a shallow hill 200-350m across the Changtansi River Diaspora farmers in the town of Guojiaba.
3.1.1 Enterprise layout
The floor plan of the enterprise is shown in the figure below.
Table 3-1 Key Area Identification Record Table
|
position |
Main structure |
Whether the focus area |
|
Northwest |
Staff dormitory, canteen, quality inspection building |
no |
|
North side |
Emergency pool 1, emergency pool 2 |
no |
|
Middle of the factory |
Power workshop |
no |
|
Middle of the factory |
Production workshop, raw material warehouse |
Yes |
|
Northeast |
Raw material tank area, raw material warehouse |
Yes |
|
Southeast |
Production workshop (T12) |
Yes |
|
Southeast |
Water purification station |
no |
|
South side |
Hazardous waste temporary storage room, sewage treatment station, coal yard, boiler room, desulfurization facility |
Yes |
|
South side |
Aluminum sheet warehouse, maintenance workshop, fire pool |
no |
Enterprise floor plan
4. Self-monitoring plan
4.1 Distribution principle
4.1.1 Background monitoring point
After the identification of key areas and facilities is completed, at least one soil should be laid out in the external areas of the company or away from the key areas and facilities. Background monitoring points and monitoring wells should be set up upstream of all key areas and facilities to provide samples that can represent the quality of soil and groundwater that are not affected by the production process of the enterprise.
The soil samples drilled during the well construction of groundwater and soil gas sampling should be analyzed and tested as the background value of the first sampling of the plot and recorded.
The groundwater background monitoring well should be set up in the same aquifer with the pollutant monitoring well.
On the north side of the enterprise, a groundwater background point is located far away from the key areas and facilities. At the same time, deep soil samples drilled during the construction of the groundwater well are collected as the soil background point.
4.1.2 Soil monitoring
（1）Number of points
At least 1-3 soil sampling points should be arranged around each key district or facility. The specific number of sampling points can be appropriately adjusted according to the actual conditions of the area to be monitored, such as the small weather.
(2) Point position
The sampling point should be as close to the pollution source as possible without affecting the normal production of the enterprise and without causing safety hazards and secondary pollution.
(3) Sampling depth
Soil monitoring should focus on the surface soil (0.2m away) in the monitoring area as the key sampling layer for sampling.
4.1.3 Soil gas monitoring
In key areas or facilities where volatile organic compounds are present in characteristic pollutants, soil gas monitoring wells should be built and soil gas monitoring should be carried out regularly.
(1) Number of points At least one soil gas monitoring point should be placed around each key area or facility with volatile organic compounds as the characteristic pollutant. The specific number should be appropriately adjusted according to the size of the area where the pollution source is located.
(2) Point position
The sampling point should be as close to the pollution source as possible without affecting the normal production of the enterprise and without causing safety hazards and secondary pollution.
(3) Sampling depth
The buried depth of the soil gas probe should be determined based on the characteristics of the formation and the buried depth of pollutants (limited to the contaminated area). Should be set in but not limited to:
1) 1.5 m below the ground.
2) During the drilling process, it was found that the area has been polluted, and the on-site volatile organic compound portable detection equipment or soil and groundwater sample detection results are high.
3) Surrounding facilities such as tanks and pipelines buried underground.
4) The highest groundwater level is not less than 1m above the capillary zone.
4.1.4 Groundwater monitoring
At least one groundwater monitoring point should be arranged around each key area or facility, and the specific number should be adjusted appropriately according to the actual situation such as the size of the area to be monitored and the way of pollutants diffusion.
(1) Point position
Groundwater monitoring wells should be arranged in the downstream direction of pollutant migration (Figure 4-1). The flow direction of groundwater may change with seasons, tides, and fluctuations in water levels of rivers and lakes. At this time, the monitoring wells should be arranged downstream of all potential migration pathways of pollutants.
Within the same enterprise, monitoring wells can be planned as a whole according to the distribution of plants and facilities. Adjacent areas or facilities on the same pollutant migration path can be monitored together.
The following situations are not suitable for combined monitoring:
1) Areas or facilities located far apart on the same pollutant migration route.
2) Adjacent areas or facilities with different pollutant migration paths.
(2) Sampling depth
The depth of the monitoring well in the vertical direction should be determined according to the nature of the pollutants, the thickness of the aquifer and the formation conditions.
①The nature of the pollutant
When the characteristic pollutants of key areas or facilities are low-density pollutants, the inlet of the monitoring well should pass through the diving surface to ensure that water samples from the top of the aquifer can be collected. When the characteristic pollutants of key areas or facilities are high-density pollutants, the water inlet of the monitoring well should be located above the aquifer, at the bottom or near the aquifer. If low-density and high-density pollutants exist at the same time, the need for sampling at different depths should be considered when setting up monitoring wells.
②Thickness of aquifer
For aquifers with a thickness of less than 3 m, sampling can be done without stratification; for aquifers with a thickness of more than 3 m, sampling should be conducted in three layers: upper, middle and lower in principle.
③ Stratum situation
Groundwater monitoring focuses on the investigation of the first aquifer (underwater). However, if it is considered possible to pollute multiple aquifers during the process of identifying key areas or facilities, all aquifers that may be polluted should be monitored. The potential for contamination of multiple aquifers is common in but not limited to:
1) The amount of water in the first aquifer is insufficient for groundwater monitoring.
2) The thickness of the water barrier between the first aquifer and the lower aquifer is thin or has been penetrated.
3) There are underground tanks, pipelines and other facilities with burial depth reaching the lower aquifer.
4) The water barrier between the first aquifer and the lower aquifer is not continuous.
The depth of groundwater monitoring wells should also be set in full consideration of seasonal water level fluctuations. Existing groundwater monitoring wells in enterprises or adjacent areas can be used as groundwater monitoring points if they meet the requirements of this guide.
4.2 point layout
Through preliminary data collection, site surveys, personnel interviews, etc., areas and facilities with hidden soil and groundwater pollution risks within the company have been identified, including warehouses, hazardous waste temporary storage rooms, sewage treatment stations, etc.
There are 11 soil monitoring points, 2 groundwater monitoring points, and 2 soil gas monitoring points in the enterprise. The groundwater and soil gas monitoring points are located in the raw material storage tank area and the sewage treatment station. On the basis of control, combined with the direction of regional groundwater runoff from northwest to southeast, fan-shaped control of the overall groundwater of the enterprise is carried out.
4.3 Monitoring items
Combining the type of company's industry and production process, and in accordance with the requirements of the "Technical Guidelines for the Self-Monitoring of Soil Environment for Key Enterprises in Beijing", Sichuan Wusheng Chunrui Pharmaceutical Chemical Co., Ltd. belongs to the pharmaceutical manufacturing industry. It can be identified that the company’s possible characteristics include heavy metals and polycyclic pollutants. Aromatic hydrocarbons, volatile organic compounds and petroleum hydrocarbons, soil and groundwater monitoring items are shown in Table 4-1.
Table 4-1 Enterprise soil and groundwater monitoring projects
|
Point type |
Point number |
Pollutant category |
Main characteristic factors |
|---|---|---|---|
|
soil |
T01~T11 |
Heavy metals (Class A1) |
Cadmium, lead, chromium, copper, zinc, nickel, mercury, arsenic |
|
Polycyclic aromatic hydrocarbons (C1 category) |
Benzo[a]pyrene |
||
|
Volatile organic compounds |
See note ① for details |
||
|
Other (A3, C3, D1) |
pH, cyanide, fluoride, petroleum hydrocarbons |
||
|
Soil gas |
TQ1、TQ2 |
Volatile organic compounds |
See note ① for details |
|
groundwater |
S01~S02 |
Conventional indicators |
See note ② for details |
|
Polycyclic aromatic hydrocarbons |
Benzo[a]pyrene |
||
|
Volatile organic compounds |
See note ① for details |
||
|
other |
Petro |
*Note: ①Soil volatile organic compounds include: benzene, toluene, chlorobenzene, ethylbenzene, xylene, styrene, dichlorobenzene, vinyl chloride, a total of 8 items;
②Conventional indicators of groundwater include color, smell and taste, turbidity, visible matter, pH, total hardness, total dissolved solids, sulfate, chloride, iron, manganese, aluminum, volatile phenols, anionic surfactants, There are 26 items including oxygen consumption, ammonia nitrogen, sulfide, sodium, total coliforms, total number of colonies, nitrite, nitrate, cyanide, fluoride, iodide, and selenium.
4.4 Investigation and evaluation method
The single-factor pollution index method is used for soil evaluation, which can intuitively display the soil quality in the study area. The calculation formula is: Pi=Ci/Si
where Pi is the environmental quality index of pollutant i, Ci is the measured value of pollutant i (mg/kg), and Si is the evaluation standard of pollutant i (mg/kg). When the Pi value is greater than 1.0, it indicates that the soil has been contaminated by the pollutants represented by the evaluation factor. The larger the Pi value, the more serious the pollution degree, otherwise the opposite.
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