Science & Technology

Lawrence Berkeley National Laboratory: Subsurface Migration Modeling Fact Sheet

Science in Action Fact Sheet: LBNL researchers investigated potential pathways for subsurface migration of fluids from stimulated oil and gas reservoir to overlying drinking water aquifer

The RealGas and RealGasH2O options of the TOUGH+ code for the simulation of coupled fluid and heat flow in tight/shale gas systems

Written by George Moridis and Craig M. Freeman.Published in Computers and Geosciences. October 2013.

Analysis of Hydraulic Fracturing Fluid Data from the FracFocus Chemical Disclosure Registry 1

The EPA analyzed data from the FracFocus Chemical Disclosure Registry 1.0 to better understand the chemicals and water used to hydraulically fracture oil and gas production wells across the United States.

EPA State-level Summaries of FracFocus 1 Hydraulic Fracturing Data

The EPA developed state-level summaries of chemical and water use using the project database developed from FracFocus 1.0 disclosures with some limited background information on oil and gas production, geology, and regulations for the state.

MeshVoro: A three-dimensional Voronoi mesh building tool for the TOUGH family of codes

Characterization of liquid chromatography-tandem mass spectrometry method for the determination of acrylamide in complex environmental samples

Patrick DeArmond and Amanda DiGoregorio. Analytical and Bioanalytical Chemistry. May 2013.

Numerical simulation of the environmental impact of hydraulic fracturing of tight/shale gas reservoirs on near-surface ground water: background, base cases, shallow reservoirs, short-term gas and water transport

Researchers examined gas and water transport between a deep tight shale gas reservoir and a shallow overlying aquifer in the two years following hydraulic fracturing, assuming a pre-existing connecting pathway.

Retrospective Case Studies Fact Sheet

Science in Action Fact Sheet: Overview of Retrospective Case Studies for EPA's Hydraulic Fracturing Study

Modeling of fault activation and seismicity by injection directly into a fault zone associated with hydraulic fracturing of shale-gas reservoirs

LBNL, in consultation with the EPA, expanded upon a previous study by injecting directly into a 3D representation of a hypothetical fault zone located in the geologic units between the shale-gas reservoir and the drinking water aquifer.

Scientific contaminant studies in the Salish Sea

Listing of some of the scientific contaminant studies conducted in the Salish Sea.

Federal Geospatial Resources

Find links to Geospatial data curated by additional agencies

EPA Geospatial Strategic Plan

This page provides access to the EPA Geospatial Strategic plan for Fiscal Year (FY) 2023 - 2027. This plan provides direction and guidance for the EPA Geospatial Program to identify priorities that support the Agency's mission now and in the future.

Science Careers at EPA

From geology to mechanical engineering, from biology to chemistry, EPA is looking for scientists, technologists and engineers to perform cutting-edge research to help make this a cleaner, more sustainable world.

Exceptional Events Documents Ozone - Pennsylvania

Exceptional Events Documents Ozone - Colorado

Exceptional Events Documents Ozone - Louisiana

Exceptional Events Documents Ozone - Maryland

Water Quality Standards Academy

The Water Quality Standards Academy provides classroom-based and online courses, along with occasional webinars, to support development of water quality standards.

Useful Links When Searching for EPA Documents not yet in the EPA Repository

A collection of links known to provide information relevent to EPA publications, either in the form of metadata or online document content.

HSRB November 18, 2025

Meeting details for the November 18, 2025 HSRB meeting