Exceedance Result Concentration

The resultConcentration on an Exceedance is the actual measured concentration — expressed in resultUnit — that exceeded the regulatory limit. This value is drawn from the parent AnalyticalResult's normalizedValue and is stored directly on the Exceedance so that compliance reports have all the key numbers in one record without having to join back to the result. The exceedanceRatio is calculated as resultConcentration divided by thresholdConcentration, giving a quick sense of how far above the limit the measurement was. A resultConcentration just above the thresholdConcentration warrants different regulatory attention than one ten times over the limit.