The Nielsen Environmental Field School

Field Parameter Measurement During Well Purging Training Courses

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Measurement of field water-quality indicator parameters is a fundamental component of most conventional purging and all low-flow purging and sampling approaches to collecting ground-water samples from monitoring wells.  This module explains how to correctly measure the most common water-quality indicator parameters (including pH, specific conductance, dissolved oxygen and redox potential) and physical parameters (temperature and turbidity) used in conjunction with purging wells to ensure the collection of accurate data.  You will learn which parameters to measure to achieve sampling program objectives and how to identify when field data do not make sense, and what the cause(s) may be.  Field videos are included in this module to explain the practices and procedures used for field parameter measurement.

Field Water-Quality Indicator Parameter Measurement During Well Purging

  • Parameters Traditionally Measured and Why They May Not All be Meaningful
  • Which Are the Most Meaningful Parameters to Measure During Purging and Why
  • Turbidity – to Measure or Not to Measure During Purging?
  • How and Where to Measure Field Water-Quality Parameters
  • Instrument and Sensor Options for Field Water-Quality Data Measurement
  • Common Problems in Field Parameter Measurement and Solutions to Those Problems
  • Evaluating the Need to Measure Field Parameters During No-Purge Sampling

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