Science & Technology
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What's New in AQUATOX Release 3.1 Plus?
AQUATOX Release 3.1 includes numerous significant enhancements over previous versions that increase the realism and utility of the model. The most important enhancements include:
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AQUATOX 3.1 Supporting Documents
Contains the user's manual, technical documentation, user manual for the extension to BASINS, sensitivity analysis, and technical notes for AQUATOX.
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AQUATOX Peer Review Documents
AQUATOX Release 2 underwent an external peer review in early 2003, and Release 3 underwent an external peer review in late 2008. Reviewers stated "model enhancements have made AQUATOX one of the most exciting tools in aquatic ecosystem management."
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Hydrologic Micro Services HMS
A hydro-informatics platform called Hydrologic Micro Services (HMS) to address the importance of interoperability, transparency, reproducibility, and efficiency in environmental modeling
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Household Energy and Clean Indoor and Ambient Air - Closed Announcement FY 2019
OAR is seeking applications from eligible entities to provide comprehensive air quality policy and regulatory analysis including support and national coordination activities to assist tribes participation in policy and regulatory activities.
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Contaminant Candidate List 3 - CCL 3
Learn about EPA's third Contaminant Candidate List (CCL 3)
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Sources of Lead in Drinking Water (Text Only)
Text Only version of the infographic titled: Sources of Lead in Drinking Water.
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Drinking Water Storage Tank Assessment Study Protocol
Optional activity designed to help drinking water systems assess the impact of tank operations on water quality, as well as estimate average tank turnover time and mixing performance within drinking water storage tanks in a distribution system.
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Free Chlorine Distribution System Influent Hold Study Protocol
Disinfection by-product optimization process and priority setting tool for drinking water systems.
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Small Drinking Water System Variances
Small system variances allow a small system to install and maintain technology that can remove a contaminant to the maximum extent that is affordable and protective of public health in lieu of technology that can achieve compliance with the regulation.
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Cost Model Documentation
WBS model documentation files.
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Lowest Concentration Minimum Reporting Level (LCMRL) Calculator
The Lowest Concentration Minimum Reporting Level (LCMRL) calculator constructs conditional (on spiking concentration) mean and variance models for analytical measurements.
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Analytical Methods Developed by EPA for Analysis of Unregulated Contaminants
Links to methods for the analysis of unregulated contaminants in support of the Unregulated Contaminant Monitoring Rule (UCMR).
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TENORM: Hard Rock Metal Mining
This page has information about TENORM in the hard rock mine industry, including gold, silver, zircon and titanium.
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TENORM: Fertilizer and Fertilizer Production Wastes
Phosphate rock is used in the production of phosphate fertilizers. Due to its chemical properties, phosphate rock may contain significant quantities of naturally occurring radioactive materials (NORM).
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Technologically Enhanced Naturally Occurring Radioactive Materials (TENORM)
This page provides an overview of TENORM and provides links to additional information about industries and sources and publications and documents related to TENORM.
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Steps to Safe Renovation and Repair Activities
Highlights precautionary measures and best work practices to follow when conducting a repair or renovation in older buildings where PCB-containing building material could be encountered.
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Risk Analysis Checklist for Biogas Projects
Risk Analysis and Technical Review Checklist for Preparing Biogas Project Plans
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AgSTAR Webinar: AgSTAR’s Operator Handbook
Presentations from the webinar