Data and Tools
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Chemistry Assistance Manual for Premanufacture Notification Submitters under TSCA
The purpose of this book is to assist submitters in the technical aspects of Premanufacture Notice preparation.
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HSCTM2D
Hydrodynamic, Sediment, and Contaminant Transport Model, a finite element modeling system for simulating two-dimensional, vertically-integrated, surface water flow
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HSCTM2D Release Notes
Release notes for Hydrodynamic, Sediment, and Contaminant Transport Model, a finite element modeling system for simulating two-dimensional, vertically-integrated, surface water flow
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A Exercise in Using PEST to Calibrate a Groundwater Model
Exercise to gain experience in using the comprehensive model postprocessing functionality available through Time Series PROCessor (TSPROC) & PEST in calibrating a HSPF model.
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Application Programming Interface (API)
Application Program Interfaces at EPA including API strategy and a list of available APIs
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Designation and NAAQS Information Related to the 1-Hour Ozone (1979 Standard) - NAAQS Revoked
Designation and NAAQS Information Related to the 1-Hour Ozone (1979 Standard) - NAAQS Revoked
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Green Book Frequent Questions
Green Book Frequently Asked Questions
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Near Road Monitoring
Information on the near road monitoring network
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GCSOLAR
Page on GCSOLAR program, a set of routines that computes direct photolysis rates and half-lives of pollutants in the aquatic environment. Contains download files. New Version July 2018.
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GCSOLAR Release Notes
Release notes for the GCSOLAR software model, a set of routines that computes direct photolysis rates and half-lives of pollutants in the aquatic environment.
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Recalls of Vehicles and Engines
n cases where EPA has determines that manufacturers have provided inaccurate, incomplete or falsified certification information or failed to keep required records, the Clean Air Act gives the EPA the authority to void certificates.
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Images in the WebCMS: Nuts and Bolts
A page for testing how images are handled in the WebCMS
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Public Webinar on Proposed TSCA Data Reporting Rule
This page has info on the TSCA data reporting rule webinar that took place july 27 2021
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Industrial Sectors Subject to Chemical Data Reporting
A table of CDR-covered Industrial Sectors
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OncoLogic™: Running the model
OncoLogic™: Running the model
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FIAM-pwp-Formaldehyde Indoor Air Model – Pressed Wood Products
The Formaldehyde Indoor Air Model-pressed wood products (FIAM-pwp) user guide contains information on the equations and defaults used to estimate exposure from formaldehye emitted from pressed wood products.
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Pesticide Environmental Modeling Public Meeting - Information
Links to agendas and dockets containing presentations and minutes presented at public meetings for the purpose of discussing and exchanging information regarding technical model-related pesticide exposure issues in the context of FIFRA and FQPA.
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FIFRA Scientific Advisory Panel Sessions Relevant to Aquatic Modeling
Science Advisory Panel sessions related to simulation models used to predict pesticide concentrations in surface and ground water for use in exposure assessments.
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Developing a Tiered Framework for Extrapolation Modeling
We are developing a tiered framework for extrapolation modeling, to take advantages of recent scientific advances. Learn more about our proposed approach.
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Environment Fluid Dynamics Code (EFDC) - Download Page
Executable and documentation access, and system requirements information for the Environmental Fluid Dynamics Code (EFDC) multifunctional surface water modeling system software