Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is formulated to implement the Environmental Protection Law of the People's Republic of China, strengthen the soil environmental supervision of development land, control the risks of contaminated land to human health, and ensure the safety of human settlements.
This standard specifies the risk screening values and intervention values of soil contamination of development land for the protection of human health, as well as the requirements of monitoring, implementation and supervision.
This standard is issued for the first time.
The following standards are a series of standards for soil environmental investigation, monitoring, evaluation and restoration of development land supporting this standard:
HJ 25.1 Technical guidelines for environmental site investigation
HJ 25.2 Technical guidelines for environmental site monitoring
HJ 25.3 Technical guidelines for risk assessment of contaminated sites
HJ 25.4 Technical guidelines for soil remediation of contaminated sites
Since the date of implementation of this standard, the Standard of Soil Quality Assessment for Exhibition Sites (Provisional) (HJ 350-2007) shall be abolished.
This standard is formulated by the Department of Soil Environment Management and the Department of Science and Technology Standards of the Ministry of Ecology and Environment of the People's Republic of China.
Chief development organization of this standard: Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, and Chinese Research Academy of Environmental Sciences. This standard was approved by the Ministry of Ecology and Environment on May 17, 2018.
This standard shall be implemented from August 1, 2018. The Ministry of Ecology and Environment is responsible for the explanation of this standard.
Soil environmental quality
Risk control standard for soil contamination of development land
1 Scope
This standard specifies the risk screening values and intervention values of soil contamination of development land for the protection of human health, as well as the requirements of monitoring, implementation and supervision.
This standard is applicable to soil contamination risk screening and risk intervention of development land.
2 Normative references
The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For undated references, the latest edition of the referenced document applies.
GB/T 14550 Soil quality — Determination of BHC and DDT — Gas chromatography
GB/T 17136 Water quality — Determination of total mercury — Cold atomic absorption spectrophotometry
GB/T 17138 Soil quality — Determination of copper and zinc — Flame atomic absorption spectrophotometry
GB/T 17139 Soil quality — Determination of nickel — Flame atomic absorption spectrophotometry
GB/T 17141 Soil quality — Determination of lead，cadmium — Graphite furnace atomic absorption spectrophotometry
GB/T 22105 Soil quality — Analysis of total mercury , arsenic and lead contents — Atomic fluorescence spectrometry
GB 50137 Code for classification of urban land use and planning standards of development land
HJ 25.1 Technical guidelines for investigation on soil contamination of land for construction
HJ 25.2 Technical guidelines for monitoring during risk control and remediation of soil contamination of land for construction
HJ 25.3 Technical guidelines for risk assessment of soil contamination of land for construction
HJ 25.4 Technical guidelines for soil remediation of land for construction
HJ 77.4 Soil and sediment Determination of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) Isotope dilution HRGC-HRMS
HJ 605 Soil and sediment－Determination of volatile organic compounds－Purge and trap gas chromatography/mass spectrometry method
HJ 642 Soil and sediment — Determination of volatile organic compounds —
Headspace-gas chromatography/mass method
HJ 680 Soil and sediment — Determination of mercury, arsenic, selenium, bismuth, antimony — Microwave dissolution/Atomic fluorescence spectrometry
HJ 703 Soil and sediment — Determination of phenolic compounds — Gas chromatography
HJ 735 Soil and sediment — Determination of volatile halohydrocarbons- Purge and trap gas chromatography mass spectrometry
HJ 736 Soil and sediment — Determination of volatile halohydrocarbons — Headspace gas chromatography mass spectrometry
HJ 737 Soil and sediment — Determination of total beryllium — Graphite furnace atomic absorption spectrophotometry
HJ 741 Soil and sediment — Determination of volatile organic compounds — Headspace gas chromatography
HJ 742 Soil and sediment — -Determination of volatile aromatic hydrocarbo — Headspace gas chromatography
HJ 743 Soil and sediment — Determination of polychlorinated biphenyls (PCBs) — Gas chromatography mass spectrometry
HJ 745 Soil — Determination of cyanide and total cyanide — Spectrometric method
HJ 780 Soil and sediment — Determination of inorganic element — Wavelength dispersive X-ray fluorescence spectrometry
HJ 784 Soil and sediment — Determination of polycyclic aromatic hydocabons — High performance liquid chromatography
HJ 803 Soil and sediment — Determination of aqua regia extracts of 12 metalelements — Inductively coupled plasma mass spectrometry
HJ 805 Soil and Sediment — Determination of polycyclic aromatichydrocarbon by Gas chromatography — Mass Spectrometry Method
HJ 834 Soil and sediment — Determination of semivolatile organic compounds Gas chromatography/Mass spectrometry
HJ 835 Soil and sediment — Determination of organochlorine pesticides — Gas chromatography/Mass spectrometry
HJ 921 Soil and sediment — Determination of organochlorine pesticides — Gas chromatography
HJ 922 Soil and sediment — Determination of polychlorinated biphenyls — Gas chromatography
HJ 923 Soil and sediment — Determination of total mercury — Catalytic pyrolysis — cold atomic absorption spectrophotometry
CJJ/T 85 Standard for classification of urban green space
3 Terms and definitions
For the purposes of this standard, the following terms and definitions apply:
3.1
development land
land for construct buildings and structures, including urban and rural residential and public facilities land, industrial and mining land, transportation and water conservancy facilities land, tourism land, military facilities land
3.2
soil contamination risk of development land
adverse effects on health caused by long-term exposure of people living and working on development land to pollutants in soil due to chronic toxic effects or carcinogenic effects
3.3
exposure pathway
ways in which pollutants in the soil of development land migrate to reach and expose to human body and which mainly includes: (1) ingesting soil orally; (2) contacting with soil by skin; (3) inhaling soil particulate matter; (4) inhaling gaseous pollutants from topsoil in outdoor air; (5) inhaling gaseous pollutants from lower soil in outdoor air; and (6) inhaling gaseous pollutants from lower soil in indoor air
3.4
risk screening values for soil contamination of development land
under the specific land use mode, if the pollutant content in the soil of development land is equal to or lower than this value, the risk to human health may be ignored; if not, there may be risks to human health, and further detailed investigation and risk assessment shall be carried out to determine the specific pollution scope and risk level
3.5
risk intervention values for soil contamination of development land
under the specific land use mode, if the pollutant content in the soil of development land exceeds this value, there is usually unacceptable risk to human health, and risk control or remediation measures shall be taken
3.6
environmental background values of soil
statistical value based on the background content of soil environment, which is usually expressed by a percentile value of soil environmental background content, wherein soil environmental background content refers to the content of elements or compounds in soil under certain time conditions, which is only affected by geochemical processes and non-point source inputs
4 Classification of development land
4.1 Among the development land, urban development land may be divided into the following two categories according to the different exposure conditions of protected objects.
4.1.1 Category I land: including residential land (R) in urban development land, primary and secondary school land (A33), medical and health land (A5) and social welfare facilities land (A6) in public management and public service land, and community park or children's park land in park green space (G1) which are specified in GB 50137.
4.1.2 Category II land: including industrial land (M) in urban development land, logistics and warehouse land (W), commercial and business facilities land (B), street and transportation facilities land (S), municipal utilities land (U), administration and public service land (A) (except A33, A5 and A6), and green space and square land (G) (except community park or children's park in G1) which are specified in GB 50137.
4.2 Among the development land, other development land may be classified according to 4.1.
5 Risk screening values and intervention values for soil contamination of development land
5.1 The screening values and intervention values of soil contamination of development land for human health protection are shown in Tables 1 and 2, where Table 1 is the basic items and Table 2 is other items. The exposure pathways considered in this standard are shown in 3.3.
Table 1 Risk screening values and intervention values for soil contamination of development land (basic items)
Unit: mg/kg
No. Pollutant CAS RN Screening value Intervention value
Category I
Land Category II
Land Category I
Land Category II
Land
Heavy metals and inorganic substances
1 Arsenic 7440-38-2 20① 60① 120 140
2 Cadmium 7440-43-9 20 65 47 172
3 Chromium (hexavalent) 18540-29-9 3.0 5.7 30 78
4 Copper 7440-50-8 2000 18000 8000 36000
5 Lead 7439-92-1 400 800 800 2500
6 Mercury 7439-97-6 8 38 33 82
7 Nickel 7440-02-0 150 900 600 2000
Semi-volatile organic compounds
8 Carbon tetrachloride 56-23-5 0.9 2.8 9 36
9 Chloroform 67-66-3 0.3 0.9 5 10
10 Chloromethane 74-87-3 12 37 21 120
11 1,1-dichloroethane 75-34-3 3 9 20 100
12 1,2-dichloroethane 107-06-2 0.52 5 6 21
13 1,1-Dichloroethene 75-35-4 12 66 40 200
14 CIS-1,2-Dichloroethylene 156-59-2 66 596 200 2000
15 Trans-1,2-Dichloroethene 156-60-5 10 54 31 163
16 Dichloromethane 75-09-2 94 616 300 2000
17 1,2-dichloropropane 78-87-5 1 5 5 47
18 1,1,1,2-Tetrachloroethane 630-20-6 2.6 10 26 100
19 1,1,2,2-Tetrachloroethane 79-34-5 1.6 6.8 14 50
20 Tetrachloroethylene 127-18-4 11 53 34 183
21 1, 1, 1-trichloroethane 71-55-6 701 840 840 840
22 1, 1, 2-trichloroethane 79-00-5 0.6 2.8 5 15
23 Trichloroethylene 79-01-6 0.7 2.8 7 20
24 1,2,3-Trichloropropane 96-18-4 0.05 0.5 0.5 5
25 Vinyl chloride 75-01-4 0.12 0.43 1.2 4.3
26 Benzene 71-43-2 1 4 10 40
27 Chlorobenzene 108-90-7 68 270 200 1000
28 1,2-Dichlorobenzene 95-50-1 560 560 560 560
29 1,4-Dichlorobenzene 106-46-7 5.6 20 56 200
30 Ethylbenzene 100-41-4 7.2 28 72 280
31 Styrene 100-42-5 1290 1290 1290 1290
32 Toluene 108-88-3 1200 1200 1200 1200
33
m-Xylene + p-Xylene 108-38-3,
106-42-3
163
570
500
570
34 o-xylene 95-47-6 222 640 640 640
Semi-volatile organic compounds
35 Nitrobenzene 98-95-3 34 76 190 760
36 Aniline 62-53-3 92 260 211 663
37 2-Chlorophenol 95-57-8 250 2256 500 4500
38 Benz[a]anthracene 56-55-3 5.5 15 55 151
39 Benzo[a]pyrene 50-32-8 0.55 1.5 5.5 15
40 Benzo[b]fluoranthene 205-99-2 5.5 15 55 151
41 Benzo[k]fluoranthene 207-08-9 55 151 550 1500
42 Chrysene 218-01-9 490 1293 4900 12900
43 Dibenz[a,h]anthracene 53-70-3 0.55 1.5 5.5 15
44 Indeno[1,2,3-cd]pyrene 193-39-5 5.5 15 55 151
45 Naphthalene 91-20-3 25 70 255 700
Note: ① If the detected content of pollutants in the soil of a specific plot exceeds the screening value, but is equal to or lower than the background value of soil environment (see 3.6), this plot is not
incorporate into the management of contaminated land. See Annex A for the background values of soil environment.
Table 2 Risk screening values and intervention values for soil contamination of development land (other items)
Unit: mg/kg
No. Pollutant CAS RN Screening value Intervention value
Category I
Land Category II
Land Category I
Land Category II
Land
Heavy metals and inorganic substances
1 Antimony 7440-36-0 20 180 40 360
2 Beryllium 7440-41-7 15 29 98 290
3 Cobalt 7440-48-4 20① 70① 190 350
4 Methyl mercury 22967-92-6 5.0 45 10 120
5 Vanadium 7440-62-2 165① 752 330 1500
6 Cyanide 57-12-5 22 135 44 270
Semi-volatile organic compounds
7 Bromodichloromethane 75-27-4 0.29 1.2 2.9 12
8 Tribromomethane 75-25-2 32 103 320 1030
9 Dibromochloromethane 124-48-1 9.3 33 93 330
10 1,2-Dibromoethane 106-93-4 0.07 0.24 0.7 2.4
Semi-volatile organic compounds
11 Hexachlorocyclopentadiene 77-47-4 1.1 5.2 2.3 10
12 2,4-Dinitrotoluene 121-14-2 1.8 5.2 18 52
13 2,4-Dichlorophenol 120-83-2 117 843 234 1690
14 2,4,6-Trichlorophenol 88-06-2 39 137 78 560
15 2,4-Dinitrophenol 51-28-5 78 562 156 1130
16 Pentachlorophenol 87-86-5 1.1 2.7 12 27
17 bis(2-ethylhexyl) phthalate (DEHP) 117-81-7 42 121 420 1210
18 Butyl benzyl phthalate (BBP) 85-68-7 312 900 3120 9000
19 Di-n-octylo-phthalate (DNOP) 117-84-0 390 2812 800 5700
20 3,3'-Dichlorobenzidine 91-94-1 1.3 3.6 13 36
Organic pesticides
21 Atrazine 1912-24-9 2.6 7.4 26 74
22 Chlordane② 12789-03-6 2.0 6.2 20 62
23 p,p'-DDD 72-54-8 2.5 7.1 25 71
24 p,p'-DDE 72-55-9 2.0 7.0 20 70
25 DDT③ 50-29-3 2.0 6.7 21 67
26 Dichlorvos 62-73-7 1.8 5.0 18 50
27 Dimethoate 60-51-5 86 619 170 1240
28 Endosulfan④ 115-29-7 234 1687 470 3400
29 Heptachlor 76-44-8 0.13 0.37 1.3 3.7
30 α-HCH 319-84-6 0.09 0.3 0.9 3
31 β-HCH 319-85-7 0.32 0.92 3.2 9.2
32 γ-HCH 58-89-9 0.62 1.9 6.2 19
33 Hexachlorobenzene 118-74-1 0.33 1 3.3 10
34 Mirex 2385-85-5 0.03 0.09 0.3 0.9
Polychlorinated biphenyls, polybrominated biphenyls and dioxins
35 Polychlorinated biphenyls (total)⑤ - 0.14 0.38 1.4 3.8
36 3,3',4,4',5-pentachlorodiphenyl
（PCB 126）
57465-28-8
4×10-5
1×10-4
4×10-4
1×10-3
37 3,3',4,4',5,5'-hexachlorobiphenyl
（PCB 169）
32774-16-6
1×10-4
4×10-4
1×10-3
4×10-3
38 Dioxins (total toxic equivalent) - 1×10-5 4×10-5 1×10-4 4×10-4
39 polybrominated biphenyl (total) - 0.02 0.06 0.2 0.6
Petroleum hydrocarbons
40 Petroleum hydrocarbon (C10~C40) - 826 4500 5000 9000
Note: ① If the detected content of pollutants in the soil of a specific plot exceeds the screening value, but is equal to or lower than the background value of soil environment (see 3.6), this plot is not See Annex A for the background values of soil environment.
② Chlordane is the sum of α-chlordane and γ-chlordane.
③ DDT is the sum of o,p'-DDT and p,p'-DDT.
④ Endosulfan is the sum of α-endosulfan and β-endosulfan.
⑤ Polychlorinated biphenyls (total) is the total content of PCB 77, PCB 81, PCB 105, PCB 114, PCB 118, PCB 123, PCB 126, PCB 156, PCB 157, PCB 167, PCB 169 and PCB 189.
5.2 Determination of screened pollutant items for soil contamination risk of development land
5.2.1 The items listed in Table 1 are required items for soil contamination risk screening of development land in the preliminary investigation stage.
5.2.2 The tested items selected for soil contamination risk screening of development land in the preliminary investigation stage shall be determined according to HJ 25.1, HJ 25.2 and relevant technical regulations, and may include but not be limited to the items listed in Table 2.
5.3 Application of risk screening values and intervention values of soil contamination of development land
5.3.1 If the planned use of development land is Category I land, the screening values and intervention values of Category I land in Tables 1 and 2 shall apply; if the planned use is the Category II land, the screening values and intervention values of the Category II land in Tables 1 and 2 shall apply. If the planned use is unclear, the screening values and intervention values of the Category I land in Tables 1 and 2 shall apply.
5.3.2 If the pollutant content in the soil of development land is equal to or lower than the risk screening value, the soil contamination risk of development land may be ignored under normal circumstances.
5.3.3 If it is determined through preliminary investigation that the pollutant content in the soil of development land is higher than the risk screening value, detailed investigation shall be carried out according to standards such as HJ 25.1 and HJ 25.2 and other standards and relevant technical requirements.
5.3.4 If it is determined through detailed investigation that the pollutant content in the soil of construction land is equal to or lower than the risk intervention value, risk assessment shall be carried out to determine the level of risk and judge whether risk intervention or remediation measures are required based on standards such as HJ 25.3 and relevant technical requirements.
5.3.5 Through detailed investigation, it is determined that the pollutant content in the soil of development land is higher than the risk intervention value, which usually poses unacceptable risks to human health, thus risk control or remediation measures shall be taken.
5.3.6 If restoration measures need to be taken for development land, the restoration target shall be determined according to standards such as HJ 25.3 and HJ 25.4 and relevant technical requirements, and the pollutant content shall be lower than the risk intervention value.
5.3.7 For pollutant items not listed in Tables 1 and 2, risk assessment may be carried out according to HJ 25.3 and other standards and relevant technical requirements, and the risk screening values of soil contamination of specific pollutants may be deduced.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification of development land
5 Risk screening values and intervention values for soil contamination of development land
6 Monitoring requirements
7 Implementation and supervision
Annex A (Informative) Environmental background values of soil in terms of arsenic, cobalt and vanadium
