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Stationary Source Program Methods Format

Descriptions and formats for creating a method for the Office of Air Quality Planning and Standards Stationary Source Program. This general format was originally developed by the Environmental...

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Environmental Modeling

Additional Resources Research Methods, Models, Tools and Databases EPA Center for Exposure Assessment Modeling (CEAM) Modeling is an important component of all environmental work at EPA. It helps...

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Environmental Modeling (E-Mod) Community of Practice (CoP)

The Environmental Modeling (E-Mod) Community of Practice (CoP) has been established for modelers (i.e., developers, users, evaluators, and those with a passion for modeling [e.g., statisticians,...

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SW-846 Method Style Guide

This style guide is for use by developers of new methods for SW-846 and editors of existing SW-846 methods. Its use will help assure consistent method format and minimize editorial errors during the...

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Learn About Models at EPA

Additional ResourcesRegistry of EPA Applications, Models and Databases (READ)Environmental models are used to help guide research and policies at EPA. Modeling provides an abundance of information and...

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Streamflow Duration Assessment Method for the Pacific Northwest

The Streamflow Duration Assessment Method (SDAM) for the Pacific Northwest is a scientific tool to provide a rapid assessment framework to distinguish between ephemeral, intermittent and perennial...

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Documents for Updating the Toxic Organic Methods

Below is the lined version of the most recent edition of Method TO-11A, from the Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, along with the list of EPA's...

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Challenges in Measuring Perfluorinated Compounds (PFCs)

Method 537 is currently used only for drinking water samples. Although nationally approved methods for measuring PFCs in non-drinking water samples are not yet available, the following consensus...

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Flexible Approaches to Environmental Measurement

In 1997, the Agency adopted the Performance Based Measurement System (PBMS) (i.e., Federal Register Notice of Intent) to:Reduce the cost of monitoring;Stimulate the development and use of innovative...

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