Science & Technology
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Superfund Hazard Ranking System Training Course: Table of Contents
Access links from the Superfund Hazard Ranking System Training Course, which is designed for personnel tasked to compile, draft, and review preliminary assessments (PAs), site inspections (SIs), and HRS documentation.
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Section 18: Soil Exposure - Resident Population Threat
The soil exposure pathway for evaluating HRS scores evaluates the potential threats to humans and terrestrial environments posed by direct, physical contact with hazardous waste or contaminated soil.
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Water Quality Standards Regulations: New York
Information related to Water Quality Standards for New York.
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Particulate Matter (PM) Standards - Policy Assessments from Current Review
The policy assessment (PA) presents a staff analysis of the scientific basis for policy options for consideration by senior EPA management prior to rulemaking.
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Uniform Federal Policy for Quality Assurance Project Plans
The UFP-QAPP provides tools to assist in implementing this UFP-QAPP Manual.
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Quality Assurance Project Plan (QAPP)
Quality Assurance Project Plan (QAPP)
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Green Infrastructure Federal Collaborative
The Green Infrastructure Federal Collaborative fosters engagement and cooperation between agencies that actively work to promote the implementation of green infrastructure.
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Northwest Indiana Urban Waters Partnership
This page provides background information on the Northwest Indiana Area one of the 18 Designated Urban Waters Locations.
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Rio Reimagined - Rio Salado Urban Waters Partnership
Rio Salado Salt River and Middle Gila River Watershed (AZ) location landing page
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Urban Waters and the San Antonio River Basin within Bexar County (Texas)
The San Antonio River Basin of the Urban Waters Federal Partnership (UWFP) reconnects urban communities with their waterways by improving coordination among federal agencies and collaborating with community-led efforts.
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Forward Models
Geophysical forward or predictive models
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Risk-Screening Environmental Indicators (RSEI) Methodology
Document for Risk-Screening Environmental Indicators (RSEI) Methodology Version 2.3.12, March 2024.
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Notification: Evaluation of the EPA’s Oversight of American Samoa’s Drinking Water Program
Notification: Evaluation of the EPA’s Oversight of American Samoa’s Drinking Water Program
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Hurricane Response Fact Sheets
Fact sheets about EPA's hurricane response efforts
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EPA-ECOS-ASTHO Memorandum of Agreement
Through a Memorandum of Agreement (MOA), EPA has a formal partnership with the Environmental Council of States (ECOS) and the Assocation of Territorial Health Officials (ASTHO).
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Summary Report: Infrastructure Investment and Jobs Act Clean Water State Revolving Fund Capacity Reviews
Summary Report: Infrastructure Investment and Jobs Act Clean Water State Revolving Fund Capacity Reviews
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Documents Associated With the PFAS Advance Notice of Proposed Rulemaking
This page contains documents related to the PFAS rulemaking for the OCPSF category.
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HFC-23 Emission Standards for Production of Class II ODS
HFC-23 transformation and emission web page. Also information on new standards and new HFC-23 rule.
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2019 SNEP Technical Assistance Network RFA
Learn more about the Southeast Coastal Watershed Program 2019 Request for Applications, EPA-R1-SNEP-2019.
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Certification Materials for Marine SI Engines/Equipment
Use these tutorials as part of certification for nonroad spark-ignition engines.