Standard Practice for Detecting Hot Spots Using Point-Net (Grid) Search Patterns

Importancia y uso:

4.1 Search sampling strategies have found wide utility in geologic exploration where drilling is required to detect subsurface mineral deposits, such as when drilling for oil and gas. Using such strategies to search for buried wastes and subsurface contaminants, including volatile organic compounds, is a logical extension of these strategies.

4.2 Systematic sampling strategies are often the most cost-effective method for searching for hot spots.

4.3 This practice may be used to determine the risk of missing a hot spot of specified size and shape given a specified sampling pattern and sampling density.

4.4 This practice may be used to determine the smallest hot spot that can be detected with a specified probability and given sampling density.

4.5 This practice may be used to select the optimum grid sampling strategy (that is, sampling pattern and density) for a specified risk of not detecting a hot spot.

4.6 By using the algorithms given in this practice, one can balance the cost of sampling versus the risk of missing a hot spot.

4.7 Search sampling patterns may also be used to optimize the locations of additional groundwater monitoring wells or vadose zone monitoring devices.

Subcomité:

D34.01.01

Referida por:

D5681-23

Volúmen:

11.04

Número ICS:

13.020.99 (Other standards related to environmental protection)

Palabras clave:

preliminary investigation; sampling; site investigation; soil investigation; subsurface exploration; systematic sampling;