Science & Technology
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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.
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Certification Materials for Small Nonroad Spark-Ignition (NRSI) Engines/Equipment
Use this template for small SI certification in EV-CIS.
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Certification Materials for Nonroad Spark-Ignition (NRSI) Evaporative Components/Equipment
Use these files for nonroad evaporative certification in EV-CIS.
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Heavy-Duty Vehicle Certification Tutorial
Covers certification and compliance regulations for HD vehicles and engines; EV-CIS registration process, CDX roles, GEM, input data set, modeling data, tire data, certification documents, warranty, certification requests, annual compliance reporting, ABT.
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Report Forms and Guidance for Defects and Recalls under 40 CFR Part 85, Subparts S and T
Forms and step-by-step guidance as part of the compliance reporting process for defects and recalls under 40 CFR Part 85, subparts S and T.
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Evaluation of the Status of American Recovery and Reinvestment Act-Funded Brownfield Site Cleanups
[Paste the description here.]
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TSCA Chemical Data Reporting Fact Sheet: Non-Isolated Intermediates
This fact sheet provides information on the reporting exemption applicable to non-isolated intermediate chemical substances for purposes of the Chemical Data Reporting (CDR) rule (40 CFR 711).
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TSCA Section 21
TSCA Section 21 regulations collect data for use in conducting assessment of potential chemical risk are described.
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Reporting a TSCA Chemical Substantial Risk Notice
Section 8(e) states that Any person who manufactures a chemical substance and obtains information that the chemical is harmful to health or the environment shall inform the EPA.
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Regulation of Chemicals under Section 6(a) of the Toxic Substances Control Act
EPA's existing chemicals programs address pollution prevention, risk assessment, hazard and exposure assessment and/or characterization, and risk management for chemicals substances in commercial use.
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PRZM3 version 3.12 beta
Page on version 3.12 (beta) of PRZM one-dimensional, finite-difference model that accounts for pesticide and nitrogen fate in the crop root zone. February 1998
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PRZM3 version 3.12.2
Page on version 3.12.2 of PRZM, a one-dimensional, finite-difference model that accounts for pesticide and nitrogen fate in the crop root zone. Released May 2005