Science & Technology
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Community-Scale Air Toxics Ambient Monitoring (CSATAM)
Webpage for the PAMS monitoring network containing information on background, methods, QA, and other resources.
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Gamma-Gamma Density Logging
Gamma-Gamma Density Borehole Logging
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Integrated Risk Information System
EPA's Integrated Risk Information System (IRIS) is a human health assessment program that evaluates information on health effects that may result from exposure to environmental contaminants.
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Dioxin
This site contains all of EPA's information on the chemical known as 2,3,7,8-tetrachlorodibenzo-p-dioxin, which is more commonly referred to as "dioxin."
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Air Emissions Inventories
This site provides access to emissions data, regulations and guidance, electronic system access, resources and tools to support trends analysis, regional, and local scale air quality modeling, regulatory impact assessments.
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RFC 24002 - Nitrate and Nitrite in Drinking Water
Data quality problems with USEPA nitrate and nitrite RfDs and MCLs
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Follow Up to Appeal to RFC: Federal Data Quality Act Petition Against Further Dissemination of 'Climate Action Report 2002
Submitted by Competitive Enterprise Institute
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Appeal to RFC: Federal Data Quality Act Petition Against Further Dissemination of 'Climate Action Report 2002
Submitted by Competitive Enterprise Institute
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EPA response to RFC: Federal Data Quality Act Petition Against Further Dissemination of 'Climate Action Report 2002
EPA response to the Request for Correction (RFC)
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EPA response to RFC: Request for Correction of Information Pursuant to Office of Management and Budget and Environmental Protection Agency Information Quality Guidelines
EPA response to the Request for Correction (RFC)
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RFC 21005 – Chloroprene
RFC 21005 Chloroprene, Denka, Request for correction, Toxicological Review of Chloroprene, CAS No. 126-99-8, IRIS,
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AVERT Tutorial: Getting Started – Identify Your AVERT Region(s)
Allows you to identify your AVERT regions.
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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
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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.
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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.
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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.
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MeshVoro: A three-dimensional Voronoi mesh building tool for the TOUGH family of codes
MeshVoro: A three-dimensional Voronoi mesh building tool for the TOUGH family of codes
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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.
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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.