HRS Subsurface Intrusion (SsI) Training Modules

The Hazard Ranking System (HRS) was revised to add a subsurface intrusion component to the HRS on December 7, 2016. The HRS Subsurface Intrusion (SsI) training modules are meant to complement the existing Superfund HRS Training Course.

Title: Focus on the HRS Subsurface Intrusion (SsI) Component

• Module 1: SsI Component Basics and Structure

• Module 2: Basis for SsI Component Scoring

• Module 3: Likelihood of Exposure

• Module 4: Waste Characteristics

• Module 5: Targets

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