Science & Technology

Technical Overview of Ecological Risk Assessment - Analysis Phase: Ecological Effects Characterization

The analysis phase examines two major parts of risk, exposure and effects, and their relationship with each other. The process for examining effects is called ecological effects characterization.

Fluopyram Request for Exclusive Use Extension and Response

Petition(s) and Response(s) for Fluopyram

Framework for Conducting Pesticide Drinking Water Assessments for Surface Water

EPA developed this framework to document the long- standing practices that the Office of Pesticide Programs uses to conduct drinking water assessments for conventional pesticides in surface water.

Biothreat Agent Detection: Advances in Rapid Analytical Methods Webinar

EPA's ORD offers free public webinars on recent research results. Watch a pre-recorded webinar covering research on development of Rapid Viability PCR (RV-PCR) methods, which can determine the presence or absence of live biothreat agents.

Biological Fate & Transport

Understanding a biological agent’s ability to persist in the environment and the various transport pathways such as rain and stormwater that can redistribute a biological contaminant would help authorities properly assess and respond.

Publications

Links and information on EPA publications and resources.

Access CMAQ Source Code

Access CMAQ source code, step-by-step instructions for downloading the CMAQ base model, and guidance on building the two-way CMAQ system.

CMAQ Documentation

Find the release notes for recent versions of the model system, a CMAQ User's Guide, and helpful tutorials on common tasks.

Technical Amendments to Procedure 6 - Final Rule

EPA published Procedure 6, which is a companion to Performance Specification 18.

Approval of New Testing Procedures for Measurement of Stack Gas Flow Rate for Optional Application in Place of Method 2 under 40 CFR Parts 60, 61, and 63

memo for use of method 2f,2g,2h

Summary of Comments on Test Methods Amendments Proposed in the Federal Register on August 27, 1997

(EPA) proposed amendments to 40 CFR Parts 60, 61, and 63 to reflect miscellaneous editorial changes and technical corrections throughout the parts in sections pertaining to source testing or monitoring of emissions and operations and added Performance Spec

Emissions Monitoring and Reporting

Learn how to provide complete and accurate monitoring, reporting, and auditing of sulfur dioxide (SO20, carbon dioxide (CO2), nitrogen oxide (NOx), and mercury (Hg) emissions.

Flash Tank Separators

During the dehydration process, glycol absorbs methane, volatile organic compounds (VOCs), and hazardous air pollutants (HAPs) from the wet gas. A flash tank separator can be used in the dehydration process to remove the gas absorbed by glycol.

Technical Overview of Ecological Risk Assessment - Analysis Phase: Exposure Characterization

Exposure Characterization is the second major component of the analysis phase of a risk assessment. For a pesticide risk assessment, the exposure characterization describes the potential or actual contact of a pesticide with a plant, animal, or media.