À proposConditionsConfidentialitéContact
 
Actualisation
Contaminated Site Clean-Up Information (CLU-IN): Internet Seminar Audio Archives

Contaminated Site Clean-Up Information (CLU-IN): Internet Seminar Audio Archives

Contaminated Site Clean-Up Information (CLU-IN)
Date de sortie : 2023-07-21
© Information presented is considered public information and may be distributed or copied. The U.S. Government retains a nonexclusive, royalty-free license to publish or reproduce these materials, or allow others to do so, for U.S. Government purposes. These materials may be freely distributed and used for non-commercial, scientific, and educational purposes. Commercial use of the materials available from this server may be protected under U.S. and Foreign Copyright Laws.
Contaminated Site Clean-Up Information (CLU-IN): Internet Seminar Audio Archives - QR Code
Libre0%
20 épisodes
Audio
Écouter sur Apple Podcasts
Libre0%
20 épisodes
Audio
Écouter sur Apple Podcasts
Date de sortie : 2023-07-21
© Information presented is considered public information and may be distributed or copied. The U.S. Government retains a nonexclusive, royalty-free license to publish or reproduce these materials, or allow others to do so, for U.S. Government purposes. These materials may be freely distributed and used for non-commercial, scientific, and educational purposes. Commercial use of the materials available from this server may be protected under U.S. and Foreign Copyright Laws.
L’épisode le plus récent
Audio for "Recommended Updates to the Soil-to-Groundwater Pathway in the U.S. EPA's 1996 Soil Screening Guidance," Jul 20, 2023

Audio for "Recommended Updates to the Soil-to-Groundwater Pathway in the U.S. EPA's 1996 Soil Screening Guidance," Jul 20, 2023

Lecture
As part of a Virtual Student Federal Service internship project, this presentation provides an overview of the history, current use, and recommended improvements of the dilution attenuation factor (DAF) used when calculating soil screening levels (SSL), along with recommendations to address the assumption of an infinite contaminant source when calculating SSLs. This project focuses on the United States Environmental Protection Agency's (U.S. EPA) 1996 Soil Screening Guidance (SSG), which provides guidance for calculating SSLs as implemented in the Regional Screening Level (RSL) and Preliminary Remediation Goal (PRG) calculators. The U.S. EPA's SSG currently utilizes a single default nationwide DAF during the calculation of SSLs when a risk of soil-to-groundwater contaminant migration is present, which may not reflect the significant hydrologic differences across the U.S. Additionally, the SSG's calculation assumes an infinite source of contaminant is present, which may not be an accurate reflection of the conditions at sites. This project examines the history and initial development of the DAF, reviews potential issues with the current use of the DAF, and provides recommendations for improvement to the DAF calculations, including hydrologic region-specific DAFs, and a calculator to correct the infinite source assumption inherent in SSL calculations. The presentation concludes with the limitations of this analysis and recommendations for future work to improve the DAF and SSG. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/Soil-to-Groundwater-Pathway_072023/
Id. d’épisode : 1000621944761
GUID : http://media.clu-in.org/seminars/tio1406.mp3
Date de publication : 21/7/2023 à 01:00:00

Description

Since 1998, The Contaminated Site Clean-Up Information (CLU-IN) website has presented Internet Seminars covering a wide variety of technical topics related to hazardous waste characterization, monitoring, and remediation. For each seminar topic, we have selected the highest-quality offering for placement in our archives. Beginning in May 2005, we began offering these archives via podcast, and this feed contains all seminars archived in the last 6 months. For a complete list of seminars archived since 2000 and videos of selected seminars archived since 2012, please visit http://clu-in.org/live/archive/. Our Rehabilitation Act Notice for reasonable accommodation is available at http://clu-in.org/training/accommodation.cfm. CLU-IN was developed by the U.S. Environmental Protection Agency (EPA) but is intended as a forum for all waste remediation stakeholders. For more information and to view upcoming live offerings, please visit http://clu-in.org/live/. For a complete list of RSS feeds available on CLU-IN, please visit http://clu-in.org/rss/about/.

Adresse du flux

https://www.clu-in.org/live/archive.xml

Apple Podcasts : Avis des utilisateurs

Pas d'entrée