Science & Technology
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Release of Guidance for Developing Ecological Soil Screening Levels
These nine contaminant-specific documents and all the supporting attachments for the guidance are available at http://www.epa.gov/ecotox/ecossl/
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Ecological Risk Assessment Guidance for Superfund: Process for Designing and Conducting Ecological Risk Assessments, Step 5-glossary, June, 1997
The primary purpose of field verification of the sampling plan is to ensure that the samples specified by the SAP actually can be collected.
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Ecological Assessment of Superfund Sites: An Overview
ECO Updates are a series of intermittent bulletins intended to facilitate ecological assessment of Superfund sites.
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Catalogue of Standard Toxicity Tests for Ecological Risk Assessment
The aquatic toxicity tests described here are the most commonly used tests and are highly standardized.
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Field Studies for Ecological Risk Assessment
Ecological risk assessments of Superfund sites evaluate the actual or potential effects of site contaminants on plants and animals and assess the need for remediation
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Selecting and Using Reference Information in Superfund Ecological Risk Assessments
Reference information, as used in this Bulletin, is data of a comparative nature needed by investigators to evaluate the environmental condition of a Superfund site.
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Ecological Significance and Selection of Candidate Assessment Endpoints
This bulletin provides guidance to Superfund risk assessors and risk managers on planning ecological risk assessments (ERAs) at Superfund sites.
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Region 8 Superfund Technical Guidance: Evaluating and Identifying Contaminants of Concern for Human Health
Regional guidance intended to clarify the evaluation process for selecting contaminants of concern for the human health risk baseline risk assessment process at Superfund sites. Sep. 1994
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Example RAGS D Tables for Chemicals with a Mutagenic Mode of Action for Carcinogenicity (Revision 2.0, December 2007)
Example RAGS D tables for chemicals with a mutagenic mode of action for carcinogenicity
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Example Calculations of Preliminary Remediation Goals (PRGs) for Benzidene Across Multiple Exposure Pathways Using Age-Dependent Adjustment Factors, Draft (Revision 1.0, December 2007)
Example preliminary remediation goal (PRG) calculations for exposure to benzidene in soil and water by both the ingestion and dermal exposure pathways using age-dependent adjustment factors (ADAFs)
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Example Calculations of Preliminary Remediation Goals for Benzo[a]pyrene Using Age-Dependent Adjustment Factors, Draft
Example preliminary remediation goal (PRG) calculations for exposure to benzo[a]pyrene in soil and water by ingestion using age-dependent adjustment factors (ADAFs)
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OSWER Directive 9200.1-120
Update of Standard Default Exposure Factors issued by EPA's Office of Solid Waste and Emergency Response, know referred to as the Office of Land and Emergency Management (OLEM).
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Tier 3 Toxicity Value White Paper
The purpose of this white paper is to articulate the issues pertaining to Tier 3 toxicity values and provide recommendations on processes that will improve the transparency and consistency of identifying, evaluating, selecting, and documenting Tier 3 toxicity values for use in the Superfund and Resource Conservation and Recovery Act (RCRA) programs. This white paper will be used to assist regional risk assessors in selecting Tier 3 toxicity values as well as provide the foundation for future regional and national efforts to improve guidance and policy on Tier 3 toxicity values.
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Presenter's Manual for Superfund Risk Assessment and How You Can Help
This manual was prepared to guide EPA staff during public presentations of the 40-minute videotape.
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Ecotox Thresholds
The ecological risk assessments (ERAs) performed in the superfund program often include a procedure to determine which, if any, of the contaminants found at a site are present
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Role of the Ecological Risk Assessment in the Baseline Risk Assessment
I want to emphasize the importance of selecting remedies at Superfund sites that are protective of the environment as well as human health.
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Human Health Toxicity Values in Superfund Risk Assessments
This memorandum revises the hierarchy of human health toxicity values generally recommended for use in risk assessments, originally presented in Risk Assessment Guidance for Superfund Volume I, Part A.
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Region and ORD Workshop on Inhalation Risk Assessment A Superfund focus
Each year, EPA Regions identify high priority science topics on which to conduct workshops. The workshops address the science issues of greatest interest to the regions on the selected topic areas.
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Ecotox Thresholds 1996
This bulletin provides an overview of the development and use of Ecotox Threshold (ET) benchmark values in Superfund ecological risk assessments (ERAs)
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Guidance for Comparing Background and Chemical Concentrations in Soil for CERCLA Sites
Guidance for Comparing Background and Chemical Concentrations in Soil for CERCLA Sites - EPA 540-R-01-003, OSWER 9285.7-41, September 2002