The Nielsen Environmental Field School

Optimizing Monitoring Well Placement Training Courses

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One of the most challenging questions faced at the start of a ground-water monitoring program is “what are the most effective locations for this site’s ground-water monitoring wells and well screens?”  This in-depth series of 5 separate modules addresses all of the myriad elements that must be evaluated to answer this seemingly simple question.  Field videos are included within several of these modules to explain the field methods used in environmental site characterization.  While you may opt to take just one or two of these modules, it is strongly recommended that you take all 5 modules in the prescribed order if you want comprehensive coverage of the subject.

Ground-Water Monitoring Program and Monitoring System Design Elements; Establishing Monitoring Program and Monitoring System Objectives, Data Needs & Uses

  • Major Elements of Ground-Water Monitoring Programs
  • Steps to Follow for Effective Monitoring System Design
  • Optimizing Monitoring Point Placement – the Process
  • Common Monitoring Program and Monitoring System Objectives
  • Data Requirements for Designing an Effective Ground-Water Monitoring System

Assembling and Evaluating Important Existing Information (Part 1); Types and Sources of Existing Information

  • Collecting and Evaluating Information on Important Factors Affecting Well Placement (Continued on Next Module)
    • Geographic and Climatic Conditions
    • Regional and Site-Specific Geologic Conditions
    • Regional and Site-Specific Hydrogeologic and Geochemical Conditions
    • Former and Current Land Uses; History, Types, Locations and Sources of Releases

Assembling and Evaluating Important Existing Information (Part 2); Using Existing Information to Prepare an Initial Conceptual Site Model

  • Collecting and Evaluating Information on Important Factors Affecting Well Placement (Continued From Prior Module)
    • Types and Characteristics of Contaminants
    • Locations of Potential Receptors and Exposure Pathways
    • Anthropogenic Influences on Ground-Water Flow
  • Developing the Initial Conceptual Site Model
    • Identifying Probable Ground-Water and Contaminant Movement Pathways in 3 Dimensions
    • Identifying Data Gaps That Need to be Filled

Conducting a Detailed 3-Dimensional Environmental Site Characterization Program – Approaches, Tools and Methods

  • Limitations of Conventional Approaches to Environmental Site Characterization
  • Principles and Advantages of Accelerated/Expedited Site Characterization
  • Discussion of ASTM Standards D 6235 and E 1912 on Expedited and Accelerated Environmental Site Characterization
  • Designing a Site Characterization Program to Fill Data Gaps in the Initial Conceptual Site Model
  • The Importance of Continuous Sampling, Subsurface Geologic, Hydrogeologic and Geochemical Profiling, and 3-D Subsurface Visualization
  • Selecting the Tools and Technologies to Produce the Data Required to Optimize Locations for Long-Term Monitoring Wells

Refining the Conceptual Site Model; Selecting Optimum Monitoring Point Locations in 3 Dimensions

  • Graphics Useful for Depicting Subsurface Conditions
  • Identifying Target Monitoring Zones for LNAPLs, DNAPLs and Dissolved-Phase Contaminants
  • Plotting Areal Distribution of Wells or Multi-Level Monitoring Systems
  • Selecting Vertical Positions and Lengths of Well Screens or Sampling Ports
  • Summary of Ground-Water Monitoring System Design

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