A Guide to the Technical Evaluation of Environmental Data by Nic Korte

By Nic Korte

A advisor for the Technical review of Environmental information provides the perception you wish for comparing analytical info got from environmental samples. frequently, analyses played on a number of samples can result in lost difficulty at the incorrect analytes. for instance, a geologist might recognize which hint metals should be clearly found in the resource rock underlying a website, yet no longer comprehend which metals may be anticipated as a result of tire put on or which polynuclear fragrant hydrocarbons will be current as a result of a close-by powerplant. This publication provide you with references to help determination making relating to collection of contaminants.

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A. 1969. Simplified statistical treatment of geochemical data by graphical representation. Econo. , 64:538-550. C. 1985. Exploring, confirming, and randomization tests. Comput. , 11(1):19-37. E. S. Webb. 1979. , Academic Press, New York. L. 1991. Resampling: Probability and Statistics a Radically Different Way, University of Maryland, College Park, MD. J. 1976. Applications of Probability Graphs in Mineral Exploration, Vol. 4, Association of Explorative Geochemists. Richmond Printers, British Columbia, Canada.

However, even with an accurate measurement of background, data are frequently obtained that indicate elemental concentrations that exceed background and regulatory action levels. Nonetheless, the apparent elemental contamination did not result from the local site that is under investigation. More common than the latter situation is that most field investigations are not sufficient in scope for the background determination to be performed. When a data evaluator is faced with potential trace element contamination, unexpected based on site history, the usual approach is to expand the investigation by collecting more samples and adding further to the analyte list.

Too often, a misplaced concern leads to emphasis on the wrong analytesgreatly increasing the expense of the investigation and diverting attention from the actual problem. A few examples known to the author follow. S. " No explanation was provided, leaving uninformed readers to draw the conclusion that hazardous waste was found. In reality, typical environmental concentrations of naturally occurring trace elements were all that were present. S. Department of Energy (DOE) site was blocked because PAHs were present in the samples.

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