dissolvedOxygen on a PurgeInterval is particularly important for sites with redox-sensitive contaminants. Dissolved oxygen must stabilize (typically within 0.3 mg/L between readings) before sampling for many groundwater programs. The trend across PurgeIntervals shows whether the well is displacing oxygen-rich stagnant water with the anoxic formation water representative of the aquifer — a key demonstration of proper low-flow purge methodology.
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Interval Dissolved Oxygen
`dissolvedOxygen` on a PurgeInterval records the dissolved oxygen concentration at each stabilization check during the well purge.