Science & Technology

Contaminant Transport in Fractured Media: Models for Decision Makers

This paper summarizes the current status of modeling ground-water flow and contaminant transport in fractured rock systems.

Performance Evaluations of Pump-and-Treat Remediations

Recent research has led to a better understanding of the complex chemical and physical processes controlling the movement of contaminants through the subsurface, and the ability to pump such contaminants...

In-Situ Bioremediation of Contaminated Ground Water

This document is one in a series of Ground Water Issue papers which have been prepared in response to needs expressed by the Ground Water Forum. It is based on findings from the research community in concert with experience gained at sites undergoing ...

ECO Update / Groundwater Forum Issue Paper: Evaluating Ground-Water/Surface-Water Transition Zones in Ecological Risk Assessments

This ECO Update builds on the standard approach to ERA (U.S. EPA 1997), by providing a framework for incorporating groundwater/surface-water (GW/SW) interactions into existing ERAs (see U.S. EPA 1997 and 2001a for an introduction to ecological risk....

Facilitated Transport

Facilitated transport is an issue identified by the forum as a concern of Superfund decision-makers. Any process that has the potential to speed the transport of a pollutant beyond ...

EPA Region 6 Laboratory Organic Analysis Group

The Organic Analysis Team analyzes samples for pesticides,herbicides, polychloronated biphenols(PCBs) and semi-volatile compounds.

Rapid Benefit Indicators (RBI) Webinar Archive

RBI process for assessing restoration sites using non-monetary benefit indicators. The RBI approach uses readily-available data to estimate and quantify benefits to people around an ecological restoration site using indicators of nature’s value to people.

EPA Healthy Heart Program Webinar Archive

EPA is raising awareness of heart disease and its link to air pollution and other environmental factors as a partner in the Million Hearts, a national initiative to prevent 1 million heart attacks and strokes by 2017.

The Growing Public Health Impact of Wildfire Smoke Emissions Webinar Archive

This is a brief discussion of wildfire smoke and its health effects along with tools available to provide public health guidance during wildfire events, including the Wildfire Smoke Guide for Public Health Officials

Health Impacts of Near Roadway Air Pollution and Mitigation Strategies Webinar Archive

Webinar on the latest science on the health impacts from near roadway exposures and discuss solutions and programs that states & community and transportation planners can consider to protect public health from the health impacts of near roadway exposures.

Air Quality Monitoring and Community Science Webinar Archive

This webinar focuses on EPA’s research that is advancing the development and evaluation of air sensor technology and helping communities learn more about their air quality.

March 22, 2006 Documentation RFC: CHEMDAT8, RCRA, SCDM, SCDM Win, SIMS, STF, SPHEM, CHEM9, HHRAP, HHRAPCF, TreatDB, KowWin, PhysProp, Chemfate, Water9, and PBT Profiler Databases

Submitted by Walter Shaub, Ph.D.

Information Quality Complaint; False Greenhouse Gas Emission Reduction Claims Related to Coal Combustion Waste Recycling

Public Employees for Environmental Responsibility (PEER) hereby submits this Information Quality Complaint (Complaint) pursuant to the Data Quality Act of 2000

August 24, 2004 RFC: Perchlorate Environmental Contamination Toxicological Review and Risk Characterization

Submitted by the Perchlorate Study Group

How does PM2.5 relate to PM species such as EC, OC, SO4, NO3, PMFINE, and DIESEL-PM25?

Primary PM2.5 estimates are speciated into the five PM species in the NEI: elemental (black) carbon (EC), organic carbon (OC), nitrate (NO3), sulfate (SO4), and the remainder of PM25-PRI (PMFINE). Diesel engine PM25-PRI and PM10 emissions are also labeled as DIESEL-PM25 and DIESEL-PM10 for mobile source diesel engines. For all…

Last published: March 6, 2026