Science & Technology
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Self-Potential (SP)
self-potential surface geophysical method
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Region 4: Risk Assessment Contacts
Region 4 public points of contact, resources, and research publication on risk assessment.
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SmartWay Verified List of Idling Reduction Technologies for Locomotives
This list shows SmartWay Verified IRTs for locomotives.
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Summary of September 2025 Updates to Aquatic Life Benchmarks Table
Summary of updates to aquatic life benchmarks table for new registrations and updated registrations.
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Manufacturer-Run In-Use Testing Program Data for Heavy-Duty Diesel Engines – Test Order Year 2021
This page provides manufacturer-run in-use testing program data from heavy-duty diesel engine manufacturers in compliance with 40 CFR 86 Subpart T for Test Year 2021.
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Healthy School Renovations
Integrating IAQ Tools for Schools in school renovations.
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Enforceable Consent Agreement for Environmental Testing on Octamethylcyclotetrasiloxane (D4)
EPA has entered into an Enforceable Consent Agreement with five manufacturers of octamethylcyclotetrasiloxane, which is widely used as a chemical intermediate and component of personal care products.
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Cyclic Aliphatic Bromides Cluster (HBCD cluster) Scope Document and Supplemental Files
scope document and supplemental files for HBCD
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Paint Removers: Methylene Chloride and n-Methylpyrrolidone (NMP)
This webinar described the risks associated with NMP, provided an overview of TSCA section 6, and solicited input on ways EPA should address identified risks, with a particular emphasis on vulnerable populations.
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Public Meeting on Risk Evaluation Scoping Efforts under TSCA for 10 Chemical Substances - Background Material & Presentation
This page contains presentation and background material on the ten chemical substances that will be the subject of a public meeting on February 15, 2017, on risk evaluation scoping efforts.
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2010/15 PFOA Stewardship Program - Guidance on Reporting Emissions and Product Content
The guidance document for the 2010/2015 PFOA Stewardship Program.
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Conformity Adequacy Review: Region 10
Resources are for air quality and transportation government and community leaders. Information on the adequacy/inadequacy of state implementation plans (SIPs) in EPA Region 10 (AK, ID, OR, WA) is provided here.
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Stakeholder Webinar (Sept. 2021): Natural Gas & Petroleum Systems in the GHG Inventory
2021 GHGI September 2021 Webinar Supporting Materials
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Stakeholder Webinar (Sept. 2022): Natural Gas & Petroleum Systems in the GHG Inventory
2021 GHGI September 2021 Webinar Supporting Materials
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EPCRA Milestones Through the Years
The Environmental Protection Agency marks 34 years since the passage of its federal Emergency Planning and Community Right-to-Know Act (EPCRA) as part of the reauthorization for Superfund in 1986.
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What is the CAMEO Software Suite?
The CAMEO software suite is a system of software applications used widely to plan for and respond to chemical emergencies.
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Connect with WaterSense
WaterSense Toilets
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Port Emissions Inventory Guidance
The Port Emissions Inventory Guidance: Methodologies for Estimating Port-Related and Goods Movement Mobile Source Emissions provides methodologies on how to develop port-related and goods movement emissions inventories.
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Microplastics Webinar Archive
This webinar, recorded on August 20, 2025, focused on microplastics, including microplastics research at EPA and microplastics resources developed by the Interstate Technology & Regulatory Council.
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Non-EPA Researcher Requirements
EPA's objective is to maximize, at no charge, access by the public to peer-reviewed scientific research journal publications or associated author manuscripts and their underlying digital data created in whole or in part with EPA funds