Science & Technology
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Section 4: Source Characterization
Learn about source characterization for Superfund sites. Although the Hazard Ranking System (HRS) is designed to score releases and sites, sources and areas of observed contamination play a crucial role in determining HRS pathway scores.
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Section 3: HRS Structure
Read about the the four pathways for evaluating a Hazard Ranking System (HRS) score: ground water migration, surface water migration, soil exposure, and air migration.
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Section 2: Site Assessment Process
Learn about the multi-step process leading to the final National Priorities List (NPL) listing decision, which begins when a site is discovered and listed in CERCLIS.
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Section 1: Regulatory Context of the HRS
Learn about the regulatory context of the Hazard Ranking System (HRS), the primary tool that EPA uses to place sites on the National Priorities List (NPL).
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EPA to Hold Training and Open House on August 29 for Michner Plating-Mechanic Street Superfund Site in Jackson, Michigan
EPA News Release: EPA to Hold Training and Open House on August 29 for Michner Plating-Mechanic Street Superfund Site in Jackson, Michigan
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EnviroAtlas & Brownfields
This interactive resource makes it easy to search all 300+ Data Layers and access their fact sheets.
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20th Annual EPA Drinking Water Workshop: Session 3B
Session 1 bios and summary for the workshop.
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20th Annual EPA Drinking Water Workshop: Session 4A
Session 1 bios and summary for the workshop.
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20th Annual EPA Drinking Water Workshop: Session 2
Session 1 bios and summary for the workshop.
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20th Annual EPA Drinking Water Workshop: Session 3A
Session 1 bios and summary for the workshop.
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20th Annual EPA Drinking Water Workshop: Session 5B
Session 1 bios and summary for the workshop.
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20th Annual EPA Drinking Water Workshop: Session 1
Session 1 bios and summary for the workshop.
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20th Annual EPA Drinking Water Workshop: Session 4B
Session 1 bios and summary for the workshop.
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20th Annual EPA Drinking Water Workshop: Session 6B
Session 1 bios and summary for the workshop.
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20th Annual EPA Drinking Water Workshop: Session 6A
Session 1 bios and summary for the workshop.
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20th Annual EPA Drinking Water Workshop: Session 7A
Session 1 bios and summary for the workshop.
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20th Annual EPA Drinking Water Workshop: Session 9
Session 1 bios and summary for the workshop.
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20th Annual EPA Drinking Water Workshop: Session 7B
Session 1 bios and summary for the workshop.
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20th Annual EPA Drinking Water Workshop: Session 5A
Session 1 bios and summary for the workshop.
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Administrative Opinions
Final opinions, including concurring and dissenting opinions, as well as orders, made in the adjudication of cases.