GB Translated English of Chinese Standard: GB NATIONAL STANDARD OF THE

Transcription

1 Translated English of Chinese Standard: GB NATIONAL STANDARD OF THE GB PEOPLE S REPUBLIC OF CHINA UDC 631.4: Z 50 GB Environmental Quality Standard for Soils 土壤环境质量标准 Issued on: July 13, 1995 Implemented on: March 1, 1996 Jointly issued by: National Environmental Protection Bureau; State Bureau of Technical Supervision. Page 1 of 8

2 Table of Contents 1 Subject Content and Application Scope Terms Classification and Standard Levels of Soil Environment Quality Standard Values Monitoring Standard Implementation... 8 Additional Explanation: Page 2 of 8

3 Environmental Quality Standard for Soils In order to implement the "Environmental Protection Law of the People's Republic of China", prevent soil contamination, protect ecological environment, safeguard the agriculture-forestry production, and maintain human health, this Standard is formulated. 1 Subject Content and Application Scope 1.1 Subject content This Standard specifies the index value for maximum allowable concentration of pollutants in soils and the corresponding monitoring methods according to the application function, protection goals and major soil properties. 1.2 Application scope This Standard is applicable to soils in farmlands, vegetable lands, tea gardens, orchards, woodlands and natural reserves. 2 Terms 2.1 Soils: it refers to the porous-layer on the surface of earth land, on which green plants can grow. 2.2 Cation exchange capacity of soils: it refers the absorbed amount of cations on the negatively charged soil colloid from solution by virtue of electrostatic attraction, which is expressed by the cmol of entire exchangeable cations in per kilogram dry soil (calculated in univalent ion). 3 Classification and Standard Levels of Soil Environment Quality 3.1 Classification Soils are divided into three categories according to the application function and protection goals: Category I - is mainly applicable to soils in nature reserves as prescribed by the State (excluding those with original background containing high level of heavy Page 3 of 8

4 metal), centralized drinking water source region, tea gardens, pasture lands and other protective regions; the soil quality basically maintains the natural background level. Category II - is mainly applicable to soils in farmlands, vegetable lands, tea gardens, orchards, pasture land, etc.; the soil quality basically does not cause hazard or contamination to the plants and environment. Category III - is mainly applicable to woodland soil, high background value soils containing large pollutants and agricultural soils (excluding vegetable lands) near minerals; the soil quality basically does not cause hazard and contamination to plants and environment. 3.2 Standard level Level I - is the limit value of soil environment quality to protect the natural ecology of areas and maintain natural background. Level II - is the limit value to safeguard agricultural production and maintain human health. Level III - is the critical value of soils to safeguard agriculture-forestry production and the normal growth of plants. 3.3 Requirements for the implementation standard level of various soil environment qualities are as follows: Category I soil environment quality shall implement Level I standard; Category II soil environment quality shall implement Level II standard; Category III soil environment quality shall implement Level III standard; 4 Standard Values 3-levels standard values specified in this Standard are detailed in Table 1. Page 4 of 8

5 6 Standard Implementation 6.1 The environmental protection administration departments of people's government at all-level are responsible for the supervision and implementation of this Standard; the relevant administrative departments of people's government at all-level shall implement according to relevant laws and regulations. 6.2 The environmental protection administration departments of people's government at all-level shall coordinate with relevant departments to classify the category of soil environment quality in its region according to the application function and protection goals of soils, and report the categories to the same-level people's government for approval. Additional Explanation: This Standard was proposed by the State Environment Protection Bureau - Department of Science, Technology and Standards. The responsible drafting organization of this Standard is Nanjing Institute of Environmental Science, SEPA. The participating drafting organizations are Geography Institute of CAS, Beijing Agricultural University, and Institute of Soil Science - Chinese Academy of Sciences. Chief drafting staffs of this Standard: Xia Jiaqi, Cai Daoji, Xia Zenglu, Wang Hongkang, Wu Meiling, and Liang Wei, etc. State Environment Protection Bureau is responsible for the interpretation of this Standard. END Page 8 of 8