Dioxin Cleanup

Dioxin cleanup levels for soil, shown by U.S. state. Data was compiled in tables organized alphabetically by state within U.S. EPA Regions 1 through 10. See attached PDF (top-right of page) for details.

These Regional tables presented on the following pages include:

• State: using the standard abbreviations.
• Soil concentration: as ppt to facilitate comparisons (several were converted to this unit).
• Date: as month-year where available (to help indicate timing per the extant OSWER
  directive, as well as recent scientific studies and harmonization efforts).
• Endpoint basis: cancer (c) or noncancer (n).
• Type of toxicity reference value: such as SF (slope factor) or RfD (reference dose).
• Toxicity value units: as consistent unit: (mg/kg/d)-1 (or mg/kg-d for noncancer endpoint), to facilitate comparisons.
• Information source: streamlined reference (for quick indication of the nature of this source, e.g., state agency or other), with weblink to facilitate direct checks.
• Context notes: to indicate, where available:
  • contaminant addressed – TCDD or toxic equivalents (TEQ);
  • land use scenario – e.g., unrestricted or commercial/industrial;
  • name of the value – e.g., cleanup level, or screening or comparison level; and
  • application context.
• Evaluation criteria: To highlight information relevant to the four criteria, as available.

Learn about Dioxin Testing...

Learn about Dioxin & Furan Testing...