Sample support and related scale issues in composite sampling |
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Authors: | Splitstone Douglas E |
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Institution: | (1) Splitstone & Associates, 4530 William Penn Highway, Murrysville, Pennsylvania 15668, USA |
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Abstract: | Composite sampling offers the great promise of efficiency and economy in environmental decision making. However, if careful attention is not paid to matching the support of the sample to that required for making the desired decision, the promise is unfulfilled. Obviously this attention must be applied in the design phase of a composite sampling strategy. Less obvious is the potential for alteration of the design sample support during sample collection and assay. The consequences of not paying attention to these aspects of sample design and assay are discussed in this issue paper illustrated with a series of examples taken from the authors consulting experience. |
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Keywords: | decision unit heterogeneity measurement variation remedial decisions risk assessment |
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