What is the hold time for soil and preserved ground water GRO samples?

The hold time for soil and preserved groundwater gasoline range organics (GRO) samples is established to ensure the integrity and reliability of the data collected during environmental assessments. For GRO samples, the correct hold time is 14 days. This period allows for the analysis of samples while maintaining their chemical stability, which is crucial for obtaining accurate results regarding the presence of hydrocarbons in the soil and groundwater.

During this timeframe, the samples must be kept under appropriate conditions, such as refrigeration, to prevent any degradation or alteration of the organic compounds present. If the samples are not analyzed within this 14-day window, there is a significant risk that the results may be skewed or inaccurate due to the potential breakdown of the compounds of interest.

Establishing a specific hold time helps standardize procedures and ensures that data used in decision-making and regulatory processes reflect the actual contamination levels at the site.