Purge Interval Notes

notes on a PurgeInterval allows the field technician to flag unusual events at specific points during the purge — such as a sudden spike in turbidity when the pump rate was adjusted, an equipment malfunction, or a debris particle observed in the tubing. These per-interval notes supplement the overall stabilizationNotes on the PurgeLog and help data reviewers understand anomalies in the parameter trend when evaluating stabilization.