Most groundwater monitoring currently being conducted under various regulatory programs relies on some form of purging, or the removal of groundwater from a monitor well prior to sample collection. Within the past few years, however, passive groundwater sampling has evolved and continues to gain acceptance among regulators and industry as a reliable, cost saving, and environmentally friendly alternative sampling methodology. A change to a passive sampling program requires careful consideration, but it's a change worth evaluating in almost all groundwater monitoring applications.
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Cox Colvin & Associates, Inc.
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