Science & Technology

Guidance for Data Useability in Risk Assessment (Part B-7), Final, May, 1992

Glossary of radiation concepts, teminology and units, radioactive substances in the environment, epa radiation program staff

Exposure Parameters

Compilation of current USEPA exposure parameters for computation of age-specific values in exposure estimates.

The Legacy of EPA’s Acid Rain Research

In EPA’s 50 years of research, one of the most significant environmental challenges the nation faced was the problem of acid rain.

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.

Guidance for Data Useability in Risk Assessment (Part A-5a), Final, April, 1992

This chapter provides planning guidance to the RPM and risk assessor for designing an effective sampling plan and selecting suitable analytical methods

Guidance for Data Useability in Risk Assessment (Part A-15), Final, April, 1992

USEPA contract laboratory program statement of work for organic analysis multi-media, multi concentration

Using Toxicity Tests in Ecological Risk Assessment

Toxicity tests are used to expose test organisms to a medium-water, sediment, or soil-and evaluate the effects of contamination on the survival, growth, reproduction, behavior and or other attributes of these organisms.

Developing A Work Scope For Ecological Assessments

Need for clarity, specificity, and completeness. SOWs and work plans should clearly state the studies needed at each phase of the assessment.

EPA's Next Generation Air Measuring Research

Introduction note to Air Sensors issue.

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-10c), Final, April, 1992

Methods, detection and quantitation limits for specified analytes of concern to risk assessment

Guidance for Data Useability in Risk Assessment (Part A-11), Final, April, 1992

Appendix IV provides calculation formulas to enable responsible risk assessment personnel to determine the minimum number of samples necessary to meet statistical performance objectives.

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)

Ecological Risk Assessment Guidance for Superfund: Process for Designing and Conducting Ecological Risk Assessments, Introduction, June, 1997

This document provides guidance on the process of designing and conducting technically defensible ecological risk assessments for the Superfund Program.

ECO Update Bulletin Series

bulletin series on ecological risk assessment of superfund sites

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

Partnering to Share EPA Expertise Around the World through the Embassy Science Fellows Program

EPA scientists participate in the Department of State's Embassy Science Fellowship program to share their expertise around the world.

Memorandum: Response To Ecological Risk Assessment Forum Request For Information On the Benefits of PCB Congener-Specific Analyses

As a prelude to the discussion of the benefits of congener-specific analysis, it is useful to briefly review the history of the domestic and global production and use of PCBs.

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 A-14), Final, April, 1992

Summary of common laboratory contaminants, concentration requirements, and risk assessment implications