When you create a ChainOfCustody document for a site visit, you add one CoCRecord for each monitoring well sampled. The CoCRecord stores the collectionMethod (e.g., low-flow), purgeMethod used before collection, the matrix (groundwater, surface water), and the collectorName for that specific well. It also links to the samplingEvent and the well via wellId, making it possible to pull a complete sample history for any individual monitoring point. The bottles field on CoCRecord lists every SampleBottle dispatched for that well's samples.
Technical section
Data model, API, and internals — visible to developers.