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Potential to Release

In the absence of an observed release, potential to release can be evaluated in the three migration pathways. Potential to release is not evaluated in soil exposure pathway. The potential to release value reflects the likelihood of hazardous substance migration from the site to the medium of concern in the absence of an observed release. As discussed in Section 3 - Likelihood of Release of this training course, potential to release is assessed in each migration pathway based on two types of factors: hazardous substances associated with a source and sources with non-zero containment. The following lists the factors used in each migration pathway.

Ground Water Pathway

  • Ground Water Containment

  • Net Precipitation

  • Depth to Aquifer

  • Travel Time

Air Pathway

  • Gas
    • Gas Containment
    • Gas Source Type
    • Gas Migration Potential

  • Particulate
    • Particulate Containment
    • Particulate Source Type
    • Particulate Migration Potential

Surface Water Pathway

  • Overland Flow
  • Flood
    • Flood Containment
    • Flood Frequency

  • Ground Water to Surface Water
    • Ground Water Containment
    • Net Precipitation
    • Depth to Aquifer
    • Travel Time

The maximum potential to release value is 500 in all migration pathways.

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