The EVS modules Krig_2D and Krig_3D provide the ability to perform Analytically Guided Site Assessment. We refer to this process as DrillGuide©. DrillGuide© allows you to use the trends in your existing soil or groundwater contamination data to determine the optimal location for additional sampling. This is accomplished by focusing on those areas of your site with high uncertainty. Uncertainty is computed using a proprietary C Tech algorithm that gives high values where concentrations are predicted to be high, but simultaneously where the confidence in that prediction is low.
DrillGuide© also allows you to determine when a site is adequately characterized.
Ask yourself - how you determine if you have collected enough data for a site? C Tech would answer that a site is adequately characterized when the statistical variation in predicted plume area (or volume) is acceptable.
This workbook will address these issues in detail for a particular real data set and hopefully teach you how to apply these concepts to your own sites.
Important note: The purpose of this workbook is to teach you a new approach to sampling and site assessment. The focus is less on how to use the C Tech modules and more on why to use them. We recommend that you read through this entire workbook before trying to follow along on your computer. Focus first on understanding the concepts and later verify that you have the mechanics under your belt.
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