In locations with heating oil releases where groundwater is present, what analyses may be required?

In locations where heating oil releases have occurred and groundwater is present, evaluating the potential impact on the environment is critical. This involves understanding the types of contaminants that could be present and assessing their potential effects on groundwater quality.

The presence of total petroleum hydrocarbons (TPH) is a common concern in such scenarios, as it represents a broad category of organic compounds derived from petroleum. However, it is also important to consider polycyclic aromatic hydrocarbons (PAHs), which are hazardous compounds that can be found in heating oil and have the potential to be more toxic than TPHs alone.

The correct answer indicates that PAH analyses can be performed, and using TPH-Dx (a specific analytical method for evaluating TPH components) could help determine whether it is necessary to analyze for PAHs. This approach reflects a comprehensive assessment strategy: while TPH analyses provide a general overview of petroleum presence, PAHs target more specific and potentially harmful substances. Carrying out such analysis is essential in protecting groundwater quality and ensuring compliance with environmental regulations.

This answer underscores the need for thorough environmental assessments in areas affected by heating oil releases, especially in relation to groundwater, rather than limiting the analysis to either soil assessments or just TPH.