What is the concentration range for Total Petroleum Hydrocarbons under Generic Remedy 1?

The concentration range for Total Petroleum Hydrocarbons (TPH) under Generic Remedy 1 is indeed 500 to 2,499 ppm. This range is specifically defined within the context of the regulatory framework governing petroleum-contaminated sites in Oregon.

In environmental assessments and remediation plans, the Generic Remedy approach categorizes contamination levels to determine the appropriate response. The 500 to 2,499 ppm range indicates a moderate level of contamination, which requires specific management and remediation techniques. This concentration range is critical for ensuring that remediation efforts are effectively tailored to address potential health and environmental risks associated with the presence of petroleum hydrocarbons.

Understanding this range helps stakeholders, including environmental professionals, regulators, and property owners, to gauge the severity of contamination and make informed decisions about the necessary steps to remediate the site while also complying with regulatory requirements. Thus, recognizing TPH levels within this specified range is essential for the effective management of contaminated land and water.