If TPH is detected in groundwater, what must be done regarding PAH analyses?

When Total Petroleum Hydrocarbons (TPH) are detected in groundwater, it is essential to conduct Polycyclic Aromatic Hydrocarbons (PAH) analyses. TPH is a broad category that can include various hydrocarbon compounds, some of which can break down into or be associated with PAHs. These compounds are significant because they can pose serious environmental and health risks, particularly concerning their toxicity and potential for bioaccumulation.

Requiring PAH analyses in this scenario ensures a comprehensive understanding of the environmental impact resulting from the presence of TPH. It allows for the identification of specific hazardous substances that may be present and assists in evaluating the extent of contamination. By performing PAH analyses, regulatory compliance can be achieved, and the appropriate remediation steps can be determined to mitigate any risks associated with these contaminants.

This approach is in line with best practices for environmental monitoring and remediation, emphasizing the need for thorough investigations whenever there's a detection of hydrocarbons in groundwater.