A site typically has multiple monitoring wells, each placed to track groundwater quality at a different location or depth. The wellId on a SamplingEvent specifies exactly which well was sampled during the visit, so that AnalyticalResults are grouped by well when generating per-well trend charts. Regulators often require reporting on individual well performance, so correctly recording the wellId on each SamplingEvent is essential for producing accurate compliance documentation across the site's well network.
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Sampling Event Well
The `wellId` on a SamplingEvent links the sampling visit to the specific monitoring well that was sampled.