Science & Technology

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

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.

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.

Non-Dioxin-Like PCBs: Effects and Consideration In Ecological Risk Assessment

An estimated one million metric tons of commercial mixtures of polychlorinated biphenyls (PCBs), such as Aroclors (USA), Kanechlors (Japan) and Clophens (Germany), were manufactured (WHO, 1993) and used worldwide as dielectric fluids

Memorandum: Tier 3 Toxicity Value White Paper - June 19, 2013

The purpose of this memorandum is to transmit the OSRTI Document entitled "Tier 3 Toxicity Value White Paper

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.

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

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.

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)

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

Recommended Use of Body Weight 3/4 as the Default Method in Derivation of the Oral Reference Dose

This document promotes the use of BW3/4 as a default method to convert data between species for both categories of endpoints.

Guidance for Data Useability in Risk Assessment (Part A-10a), Final, April, 1992

The purpose of this appendix is to familiarize the reader with the variety of EPA methods that are available for analysis of pollutants of concern in risk assessment.

Appendix C: Characterization of Uncertainty and Bias in Asbestos Epidemiological Data

Each of the epidemiological studies utilized in the fitting exercise described in this report provide data on the level of cumulative exposure in groups of workers and on the incidence of lung cancer or mesothelioma observed in those workers.

Guidance for Data Useability in Risk Assessment: Quick Reference Fact Sheet, September, 1990

The guidance manual provides direction for planning and assessing analytical data collection activities for the baseline human health risk assessment, conducted as part of the Remedial Investigation (RI) process.

Proposed Approach for Estimation of BIN-Specific Cancer Potency Factors for Inhalation Exposure to Asbestos

Inhalation exposure to asbestos increases the risk of lung cancer and mesothelioma in humans.

Appendix B: Summary of TEM Particle Size Distribution Datasets

As discussed in the main text (see Section 5.3.2), calculation of the concentration of asbestos fibers in each of the bins of potential interest requires particle size distribution data derived using transmission electron microscopy (TEM).

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

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.

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/

Participatory Science Air Monitoring Equipment Resources

This document provides a general description of air monitoring and sampling equipment that have been used in citizen science projects.