Science & Technology

Meet ORISE Research Fellow Nisha S. Sipes, Ph.D.

Nisha S. Sipes is an ORISE Research Fellow in EPA’s innovative National Center for Computational Toxicology. She and her colleagues are changing the way toxicity testing is done by researching ways to make it faster, more efficient, and more informative

The Cyanobacteria Assessment Network – Recent Success in Harmful Algal Bloom Detection

EPA scientists and partners are improving harmful algal bloom detection through the use of satellite imagery.

Science Matters Articles related to Sustainability Research

Find published Science Matters articles about the EPA's sustainability and green practices research.

Modeling Research Shows How Salty Ocean Air Impacts Ozone Pollution

Did you know that salty air from the ocean’s surface can help to reduce ozone air pollution, particularly in coastal areas?

EPA Projects Aim to Improve Ozone Models Over Long Island Sound

EPA scientists are using data from a 2018 study with partners where they collected air quality data to investigate ozone formation over the ocean and transport across Long Island Sound to improve air quality models.

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 on Risk Characterization for Risk Managers and Risk Assessors

This memorandum provides guidance for managers and assessors on describing risk assessment results in EPA reports, presentations, and decisions packages.

Guidelines for Exposure Assessment

1992 final guidelines for exposure assessment.

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.

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.

Frequently Asked Questions (FAQs) About Update of Standard Default Exposure Factors

list of FAQs concerning OSWER's default exposure factors

Relative Potency Factors for Carcinogenic Polycyclic Aromatic Hydrocarbons (PAHs)

Relative potency factors of selected PAH based on mouse skin carcinogenesis

Meet EPA Biologist Haiyan Tong MD, Ph.D.

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.

The Role Of Natural Resource Trustees In The Superfund Process

The comprehensive environmental response, compensation and liability act (CERCLA), as amended by the superfund amendments and reauthorization act (SARA)

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

Exhibit 25 Summary of most frequently occuring checmicals of potential concern by industry

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.

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

Workshop on Performance Targets for Low-Cost Air Sensors Scheduled for July 16