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Developing usage of VSP at Lawrence Livermore National Laboratory

Developing usage of VSP at Lawrence Livermore National Laboratory. DOE ASP Workshop. September 25, 2013. Donald H. MacQueen. ‘… if it’s rad, they ask, “Did you use MARSSIM?” if it’s not rad, they ask, “Did you use VSP ?”’. Example Project 1: sampling for on -site reuse of soil.

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Developing usage of VSP at Lawrence Livermore National Laboratory

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  1. Developing usage of VSP at Lawrence Livermore National Laboratory DOE ASP Workshop • September 25, 2013 • Donald H. MacQueen

  2. ‘… if it’s rad, they ask, “Did you use MARSSIM?”if it’s not rad, they ask, “Did you use VSP?”’

  3. Example Project 1:sampling for on-site reuse of soil Aerial photo showing the project site

  4. A portion of the site is excludedfrom sampling Areas known to be acceptable for re-use Areas that will not be excavated (drainage channels) Non-native soil

  5. Use VSP to generate sampling locations • Grid samples based on Data Quality Objectives • Additional judgmental samples • Fill-in for comfort • Non-native soil It is very helpful that VSP allows both a statistical design and arbitrary locations in the same plan

  6. Another example of recent use of VSP at LLNL • Based on site history contamination is not expected • But contamination cannot be absolutely ruled out • Therefore, pre-construction soil sampling is necessary • The sampling strategy is to discover a large area of contamination, in case there is one

  7. Use of VSP at LLNL is increasing • Most often for soil sampling • Pre-construction sampling • Post-remediation confirmation sampling • Ad-hoc special projects • Recently provided adviceabout using VSP foroutside staff in a“work-for-others” project

  8. Developing internal guidance on using VSP • Primarily for pre-construction soil sampling • Targeted for “Environmental Analysts” • Environmental science/engineering background • Typically not computer “power users” • Intended to help with the “re-learning” curve • Users have many other responsibilities and won’t be using VSP daily (or even weekly)

  9. Elements of guidance • Acquiring a basemap • This is being standardized for the LLNL site, so that users start with a template VSP project file • The template contains • A map of roads, buildings, etc. • Representations of known source areas, F-listed areas • Aerial photographs as an optional background to the map • Concepts and guidance for data quality objectives • What exactly are the concerns? • What sampling strategy will address those concerns • Dealing with the concept of (statistical) “confidence” • What kind of background information is needed • Environmental analysts are generally already very good at this part

  10. More elements of guidance • Basic examples of working with the VSP interface • Drawing sampling areas • Selecting sampling designs • Exporting sample coordinates • Copying a VSP design to word processor software • Downloading and installing VSP • Links to more extensive VSP training VSP (Visual Sample Plan) software is available at http://vsp.pnnl.gov

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