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https://www.epa.gov/sites/production/files/2016-01/documents/dtsd-20081031-chaps1_6.pdf
editor of the Delisting Technical Support Document (DTSD) and the interactive, Windows-based Delisting Risk Assessment Software (DRAS), would like to acknowledge that development of the (RCRA) delisting risk-based program could not have been accomplished without the support, input, and
https://archive.epa.gov/region6/6pd/rcra_c/pd-o/web/html/midlo.html
The Delisting Technical Support Document (DTSD) is the documentation that thoroughly and accurately describes the supporting technical methodology (i.e., fate and transport modeling, exposure pathway algorithms, etc.) employed by the DRAS program to perform the risk assessment.
https://www.federalregister.gov/documents/2019/11/12/2019-23830/hazardous-waste-management-system-proposed-exclusion-for-identifying-and-listing-hazardous-waste
Based on risk ranges in the EPA's RCRA Delisting Technical Support Document (2008). At a target cancer risk of 1 × 10 − 5 and a target hazard quotient of 1.0, the DRAS program determined maximum allowable concentrations for each constituent in both the waste and the leachate.
https://www.federalregister.gov/documents/2002/03/15/02-6153/hazardous-waste-management-system-identification-and-listing-of-hazardous-waste-proposed-exclusion
Today's proposal provides background information on the mechanics of the DRAS, and the use of the DRAS in delisting decision-making. Please see the EPA, Region 6, RCRA Delisting Technical Support Document (RDTSD) for a complete discussion of the DRAS calculation methods.
https://19january2017snapshot.epa.gov/hw/hazardous-waste-delisting-risk-assessment-software-dras_.html
Dec 28, 2016 · The Delisting Technical Support Document (DTSD) The DTSD presents extensive information delineating all chemical release, exposure and risk assessment algorithms employed by the DRAS program. Anyone wishing to gain technical insight into the RCRA delisting risk-based process may review information provided in the document.
https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P10007SP.TXT
Users are directed to the Delisting Technical Support Document (DTSD) for detailed background information about the algorithms, equations, and the dilution-attenuation factors (DAFs) used in the risk assessment. The DTSD is available as a WordPerfect 6.1 file on the compact disc (CD).
https://pcb.illinois.gov/documents/dsweb/Get/Version-84547/AS%2018-1%20PDC%20petition%2009-21-2017.pdf
3.0 of the Technical Support Document filed with this Petition. Tech Services reached the following conclusions regarding the data collected from eight years of testing: Based on the population statistics of the dioxin/furan testing that has been performed under the Adjusted Standard Order, the vast majority (i.e., more than 97%) of the data are
https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=200125QL.TXT
----- FOREWORD In April 1985, the Environmental Protection Agency published the Resource Conservation and Recovery Act (RCRA) technical guidance document "Petitions to Delist Hazardous Wastes - A Guidance Manual" in order to assist facilities in preparing delisting petitions for the exclusion of listed hazardous wastes.
https://www.regulations.gov/document?D=EPA-HQ-RCRA-2006-0984-0139
Jun 04, 2008 · See the Technical Support Document for a detailed description of the use of these models and their peer review. EPA's Regional Offices, and certain states, use the DRAS model to determine whether to grant requests for delistings under 40 CFR 260.22.
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