übertool: web applications for ecological risk assessment (beta version)
Cloud-based environmental models used by the USEPA for evaluating pesticide risks to ecosystems under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) and the Endangered Species Act (ESA).
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Rice Model Overview

The Tier I Rice Model (Version 1.0) is designed to estimate surface water exposure from the use of pesticide in rice paddies. It is a screening level model that is based on the Interim Rice Model, which has been used by the Environmental Fate and Effects Division for multiple years. The model calculates a single, screening-level concentration that represents both short and long term surface water exposures. The screening-level concentraion can be used for both aquatic ecological risk assessments and drinking water exposure assessments for human health risk assessment.