Science & Technology
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Ecoregion Download Files by State - Region 1
Downloadable maps and datasets for Level III and IV ecoregions, listed by state. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.
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Ecoregion Download Files by State - Region 7
Downloadable maps and datasets for Level III and IV ecoregions, listed by state. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.
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Ecoregion Download Files by State - Region 8
Downloadable maps and datasets for Level III and IV ecoregions, listed by state. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.
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Ecoregion Download Files by State - Region 5
Downloadable maps and datasets for Level III and IV ecoregions, listed by state. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.
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Ecoregion Download Files by State - Region 3
Downloadable maps and datasets for Level III and IV ecoregions, listed by state. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.
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Advanced Analyses
Methods for controlling natural variability, predicting environmental conditions from biological observations method, biological trait data, species sensitivity distributions, propensity scores, Advanced Analyses of Data Analysis references.
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Ecoregion Download Files by State - Region 10
Downloadable maps and datasets for Level III and IV ecoregions, listed by state. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.
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Ecoregion Download Files by State - Region 6
Downloadable maps and datasets for Level III and IV ecoregions, listed by state. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.
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Ecoregion Download Files by State - Region 4
Downloadable maps and datasets for Level III and IV ecoregions, listed by state. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.
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Ecoregion Download Files by State - Region 2
Downloadable maps and datasets for Level III and IV ecoregions, listed by state. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.
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Determining the Chemical Substances Subject to the CDR Rule
These Frequent Questions (FQs) are intended to clarify the reporting requirements for Chemical Data Reporting for the 2016 reporting period.
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Water Quality Standards Regulations: North Carolina
Information related to Water Quality Standards for North Carolina.
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Exposure Surrogate Reference Table for Pesticide Risk Assessment - Previous Versions
Previous Exposure Surrogate Reference Tables March 12 - November 2016
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Predictive Models and Tools for Screening Chemicals under TSCA: Consumer Exposure Models 1.5
CEM contains a combination of models and default parameters which are used to estimate inhalation, dermal, and oral exposures to consumer products and articles for a wide variety of product and article use categories.
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Chemical Assessment Clustering Engine (ChemACE) User Tutorial
Provides instructions on how to setup and use ChemACE, as well a description of the approach used by ChemACE to cluster chemicals and the fragments used in developing clusters.
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Use and Exposure Information Project (UEIP)
provides guidance for industry-specific workplace release and exposure estimates
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PSC v1.05 Manual and User Guide
Additional information on surface water, porewater and sediment modeling, modeling inputs, and approaches used to develop PSC v1.05.
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KABAM Version 1.0 - User's Guide and Technical Documentation
User's Guide and Technical Documentation KABAM Version 1.0 (Kow (based) Aquatic BioAccumulation Model). The PDF Version includes all the appendices.
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TIM Version 3.0 beta Technical Description and User Guide - Appendix F - Approach for Calculating Juvenile Dietary Exposure
Use the available information on the relationship between juvenile body weights and energetic requirements to develop a general approach for calculating juvenile dietary exposure doses appropriate for a range of avian species.
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TIM Version 3.0 beta - Technical Description and User's Guidance
Provides technical information on version 3.0 of the Terrestrial Investigation Model (TIM v.3.0). Describes how TIM derives joint distributions of exposure and toxicity to calculate the risk of mortality to birds.