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Soil Guideline Values (SGVs) are figures which are used in non-statutory technical guidance for assessors carrying out risk assessments to determine whether land is considered "contaminated" under United Kingdom law, that is "land which appears to... be in such a condition, by reason of substances in, on or under the land, that (a) significant harm is being caused or there is a significant ...
Countries with guideline values as their standards include Canada, which has guideline values for a relatively small suite of parameters, New Zealand, where there is a legislative basis, but water providers have to make "best endeavours" to comply with the standards, [7] and Australia.
On 4 April 2022 the WHO released their report based on the new guidelines. Pollutants for which new guidelines for annual mean have been set are PM 2.5, with guideline value half the previous one, PM 10, which is decreased by 25%, and that for nitrogen dioxide (NO 2), which is four times lower than the previous guideline. [9]
A case of environmental contamination is defined as 'serious' if >25 m 3 soil or >100 m 3 groundwater is contaminated above the intervention value. The values presented below are from Annex 1, Table 1, "Groundwater target values and soil and groundwater intervention values".
Acute Exposure Guideline Levels (AEGLs) set levels of chemical concentration that pose a defined level of risk to humans (the general population, including susceptible individuals). [ 1 ] [ 2 ] [ 3 ] These levels are used in preventing and responding to disasters .
Soil value (German: Bodenwertzahl) or BWZ is a comparative assessment of soil quality used in Germany. It is determined from soil sampling data and ranges from 0 (very low) to 100 (very high).
The Unified Soil Classification System (USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil.The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol.
The Storie index is a method of soil rating based on soil characteristics that govern the land's potential use and productivity capacity.Developed by R. Earl Storie at University of California, Berkeley in the 1930s as a method of land valuation, it is independent of other physical or economic factors that might determine the desirability of growing certain plants in a given location.