Addition of a Subsurface Intrusion Component to the Hazard Ranking System
Federal Register, Volume 83 Issue 21 (Wednesday, January 31, 2018)
Federal Register Volume 83, Number 21 (Wednesday, January 31, 2018)
Rules and Regulations
Page 4430
From the Federal Register Online via the Government Publishing Office www.gpo.gov
FR Doc No: 2018-01971
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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 300
Addition of a Subsurface Intrusion Component to the Hazard Ranking System
CFR Correction
In Title 40 of the Code of Federal Regulations, Parts 300 to 399, revised as of July 1, 2017, on page 110, in the Table of Contents to Appendix A to Part 300, revise the following headings:
Appendix A to Part 300--The Hazard Ranking System
Table of Contents
* * * * *
7.1.1 Observed release/observed contamination/observed exposure.
7.1.2 Potential to release/potential for exposure.
* * * * *
7.2.3 Persistence/degradation.
* * * * *
7.3.3 Weighting of targets within an area of subsurface contamination.
* * * * *
List of Figures, Figure number
* * * * *
5-1 Overview of the soil exposure and subsurface intrusion pathway.
* * * * *
List of Tables, Table number
* * * * *
5-1 Soil exposure component scoresheet.
5-2 Hazardous waste quantity evaluation equations for soil exposure component.
* * * * *
5-11 Subsurface intrusion component scoresheet.
5-12 Structure containment.
5-13 Depth to contamination.
5-14 Effective porosity/permeability of geological materials.
5-15 Vertical migration factor values.
5-16 Values for vapor pressure and Henry's constant.
5-17 Vapor migration potential factor values for a hazardous substance.
5-18 Degradation factor value table.
5-19 Hazardous waste quantity evaluation equations for subsurface intrusion component.
5-20 Health-based benchmarks for hazardous substances in the subsurface intrusion component.
5-21 Weighting factor values for populations within an area of subsurface contamination.
* * * * *
FR Doc. 2018-01971 Filed 1-30-18; 8:45 am
BILLING CODE 1301-00-D
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