Science & Technology
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HELP 4.0 User Manual
The Hydrologic Evaluation of Landfill Performance (HELP) model is a quasi-two-dimensional hydrologic model of water movement across, into, through and out of landfills. The model accepts weather, soil, and design data.
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EPA Research Supports National Lead Poisoning Prevention Week
Highlights or recent lead research pubs, written as plain language abstracts
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Ecosystems and Air Quality
Research is conducted to understand the ecological impacts of air pollutants
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Air Manganese Study
In November 2011 US EPA researchers conducted a health study of airborne manganese exposure in East Liverpool, Ohio. This Web site discusses preliminary results of the study and provides background and other related information.
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Collaborative Opportunities for Measurement
This page includes resources pertaining to collaborative engagement with the Agency in the areas of measurement, methods, monitoring, or data analysis.
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Synthesis Report of the US Laboratory Enterprise Evaluation
Synthesis Report of the US EPA Laboratory Enterprise Evaluation
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Evaluating the Quality of Individual Studies
Sample evaluation form which tracks eight elements of a study.
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HSRB November 16, 2023
HSRB November 2023 Meeting
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October 19-21, 2021, Meeting of the Human Studies Review Board
Agenda and supporting documents for the October 19-21, 2021 meeting of the Human Studies Review Board.
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Risk Assessment Current Projects
Guidelines and frameworks under development for cumulative risk assessment, current projects
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HSRB October 11-12, 2023
HSRB October 2023 meeting materials.
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Types of Nonpoint Source Pollution
sectors of land use related nonpoint source concerns
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Stakeholder Webinar (Sept. 2020): Natural Gas & Petroleum Systems in the GHG Inventory
2020 GHGI Sept 2019 Webinar Supporting Materials
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Supporting Materials: Nov. 2019 Stakeholder Workshop on GHG Data for Natural Gas and Petroleum Systems
GHGI Nov 2019 Webinar Supporting Materials
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Pesticide Science and Assessing Pesticide Risks
EPA protects human health and the environment by evaluating the risk associated with pesticides before allowing them to be used in the United States. Learn about the tools and processes used in risk assessment for pesticides.
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Preparatory Meeting Webcast to Clarify Draft Charge Questions for Resistance in Lepidopteran Pests to Bacillus thuringiensis (Bt) Plant Incorporated Protectants
Event page for Preparatory Meeting Webcast to Clarify Draft Charge Questions for Resistance in Lepidopteran Pests to Bacillus thuringiensis (Bt) Plant Incorporated Protectants
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Reducing Pesticide Drift
Provides information about pesticide spray drift, including problems associated with drift, managing risks from drift and the voluntary Drift Reduction Technology program that seeks to reduce spray drift through improved spray equipment design.
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RFR 16002A - Request for Reconsideration Transmittal Letter Dated 08/22/19; Received 08/22/19
Request of Reconsideration of # 16002 TSCA Work Plan Chemicals Assessment Process related to potential exposure to, and environmental persistence of, 1,2-dichloroethane (ethylene dichloride or EDC)
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RFC 21001 - Greenhouse Effect
This RFC challenges the mathematical premise on which the Greenhouse Effect and Greenhouse Gases are based.
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RFC 19004 – Preliminary ecological risk assessment (ERA) for Atrazine.
This RFC challenges an EPA Blog Post concerning National Pollinators Week