Abstract
It is not necessary that all environmental problems of site characterization, cleanup evaluation, and compliance monitoring aim only at estimating the average value. Many of these problems also have an interest in extremely high contamination levels. A common experience is that compositing sample averages out the individual sample values and hence does not incur any loss of information on the population mean. However, compositing poses a serious problem if the interest is in extreme values. There is very limited literature on detection of large individual sample values. Casey et al (1985) give a method to predict the maximum sample value using composite sample measurements. Gore and Patil (1993) develop a statistical method to identify the largest individual sample value without exhaustively obtaining all individual sample values.
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