Science & Technology

Withdrawal of the January 15, 2009, OSWER Guidance Entitled "Interim Recommended Trichloroethylene (TCE) Toxicity Values to Assess Human Health Risk and Recommendations for the Vapor Intrusion Pathway Analysis

The agency is withdrawing this guidance to further evaluate the recommendations regarding the non-cancer TCE toxicity value for use in risk assessments of inhalation exposures.

Role of Background in the CERCLA Cleanup Program

This document clarifies the U.S. Environmental Protection Agency (EPA) preferred approach for the consideration of background constituent concentrations of hazardous substances, pollutants, and contaminants in certain steps of the remedy selection process

Revised Policy on Performance of Risk Assessments During Remedial Investigation and Feasibility Studies

As part of the recently announced administrative reforms to the Superfund program, the Administrator stated that EPA would reaffirm its commitment

Other Carcinogenic Polycyclic Aromatic Hydrocarbons

List of carcinogenic polycyclic aromatic hydrocarbons (PAHs) other than benzo[a]pyrene

Guidance for Data Useability in Risk Assessment (Part B-10), Final, May, 1992

References: altshuler, 1963, LLD calculations, American National Standards Institute (ANSI)

Guidance for Data Useability in Risk Assessment (Part A-6), Final, April, 1992

Assessment of environmental data for useability in baseline risk assessment

Guidance for Data Useability in Risk Assessment (Part A-16), Final, April, 1992

Example diagram for a conceptual model for risk assessment

Guidance for Data Useability in Risk Assessment (Part A-12), Final, April, 1992

Appendix V lists the parameters and criteria that produce a "J" flag in accordance with the National Functional Guidelines for Organic Data Review (EPA 1991e) and Laboratory Data Validation Functional Guidelines for Inorganics Analyses (EPA 1988e)

EPA Research in the Pacific Islands

EPA researchers are working hard to protect communities across the nation. Learn about some of the work EPA researchers are doing in the U.S. Pacific Territories of American Samoa, the Commonwealth of the Northern Mariana Islands (CNMI), and Guam; U.S. Min

Guidance for Data Useability in Risk Assessment (Part A-4a), Final, April, 1992

This chapter applies data useability criteria to data collection planning efforts to maximize the useability of environmental analytical data in baseline risk assessments.

Ecological Risk Assessment Guidance for Superfund: Process for Designing and Conducting Ecological Risk Assessments, Steps 1-4, June, 1997

Step 1 is the screening-level problem formulation process and ecological effects evaluation (highlight 1-1 defines screening-level risk assessments)

Guidance for Data Useability in Risk Assessment (Part B-5), Final, May, 1992

Data assessment is accomplished by examining two general sets of data. One set of data consists of the data supporting the individual analysis.

Guidance for Data Useability in Risk Assessment (Part B-9), Final, May, 1992

Appendix III EPA radiation program staff

Guidelines for Exposure Assessment

1992 final guidelines for exposure assessment.

Risk Assessment Guidance for Superfund Volume I: Human Health Evaluation Manual Supplemental Guidance

This guidance supplements the Risk Assessment Guidance for Superfund: Human Health Evaluation Manual, Part A that was issued October 13, 1989.

Guidance for Data Useability in Risk Assessment (Part A-13), Final, April, 1992

Appendix VI lists the parameters and criteria that produce an "R" flag

Guidance for Data Useability in Risk Assessment (Part B-2), Final, May, 1992

This chapter discusses the data collection and evaluation issues that affect the quality and useability of radioanalytical data for baseline human health risk assessments.

Issuance of Final Guidance: Ecological Risk Assessment and Risk Management Principles for Superfund Sites, October 7, 1999

This guidance is intended to help Superfund risk managers make ecological risk management decisions that are based on sound science, consistent across Regions, and present a characterization of site risks that is transparent to the public.

Use of IRIS Values in Superfund Risk Assessment

This memorandum clarifies the policy stated at section 7.4.1 of the December 1988 Risk Assessment Guidance for Superfund (Volume I) Human Health Evaluation Manual (Part A)

Section 3 - Exposure assessment and risk descriptors

The results of a risk assessment are usually communicated to the risk manager in the risk characterization portion of the assessment.