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Science & Technology

Standard Operating Procedure for Using the NAFTA Guidance to Calculate Representative Half-life Values and Characterizing Pesticide Degradation

Results of the degradation kinetics project and describes a general approach for calculating and selecting representative half-life values from soil and aquatic transformation studies for risk assessment and exposure modeling purposes.
KABAM Version 1.0 User's Guide and Technical Documentation - Appendix E - Selection of Bird Species of Concern and Corresponding Biological Parameters

Bird species of concern were identified to define default parameters (body weight and diet composition) to represent birds in KABAM. KABAM is a simulation model used to predict pesticide concentrations in aquatic regions for use in exposure assessments.
Why isn’t there an outdoor air monitor in my county?

EPA and its partners in State, local, and tribal air monitoring programs work closely to design and implement ambient air monitoring networks to meet multiple monitoring objectives including: providing air pollution data to the general public in a timely manner; supporting compliance with the National Ambient Air Quality Standards (NAAQS)…
- Last published: August 11, 2025
T-HERPS Version 1.0 User's Guide for Risk to Amphibians and Reptiles from Pesticides

T-HERPS estimates dietary exposure and risk to terrestrial-phase amphibians and reptiles from pesticide use. Currently approved for assessing exposure and risk to the California red-legged frog and terrestrial-phase herptiles with similar dietary behavior
KABAM Version 1.0 User's Guide and Technical Documentation - Appendix C - Explanation of Default Values Representing Biotic Characteristics of Aquatic Ecosystem, Including Food Web Structure

Information relevant to KABAM and explanations of default parameters used to define the 7 trophic levels. KABAM is a simulation model used to predict pesticide concentrations in aquatic regions for use in exposure assessments.
CRP - IXB Trigger Sprayer Screw & Snap-on

child resistant packaging
PFAM 2.0 - Documentations

The advanced capabilities of PFAM include accounting for water and pest management practices and for degradation in soil and aquatic environments, as well as for post processing of discharged paddy waters to a user-defined receiving water.
Recent Updates/Changes to EnviroAtlas

List of updates recently made to the EnviroAtlas Interactive Map.
Additional Guidance for Evaluating and Calculating Degradation Kinetics in Environmental Media

EFED compiled examples where the PestDF (version 0.8.4), the tool used most commonly by USEPA to conduct kinetic analysis following the NAFTA guidance, results required additional interpretation. Here are some of these examples.
NAFTA Guidance for Evaluating and Calculating Degradation Kinetics in Environmental Media :DD Memo

Signed Division Director memo, December 17, 2012, with original announcement to EFED scientists of tools and approaches for evaluating and calculating degradation kinetics in environmental media. There is more updated information that this available.
Improving Labels to Reduce Pesticide Drift

We encourage pesticide manufacturers to state on their product labels that applicators should use DRT-rated technologies in applying pesticide products. The page includes information on how to obtain approval to add these instructions.
2016 e-CDRweb User Guide – Secondary Authorized Official

This document presents the user guide for the Office of Pollution Prevention and Toxics’ (OPPT) 2016 e-CDRweb tool. This document is the user guide for the Secondary Authorized Official (AO) user of the 2016 e-CDR web tool.
WATERS (Watershed Assessment, Tracking & Environmental Results System)

A system that unites water quality information from several independent and unconnected databases.
Various Technology—Biodiesel (1-100%)

This retrofit technology is included on EPA's Verified Technologies List for Clean Diesel.
Locating the Vehicle Emissions Label

The images on this page show how to locate the vehicle emissions label used for model year vehicles produced before and after 2007.
How to Obtain a Copy of a Certificate of Conformity for a Light-duty Vehicle (car, truck, or motorcycle)

Information on how to obtain a copy of Certificate of Conformity for a light-duty vehicle.
Overview of State User Roles in the Exceptional Events Submission and Tracking System

There are two state roles in the Exceptional Events Submission and Tracking System: 1) Certifier and 2) Preparer. This document is an aide for both roles.
Registering as a Preparer/Certifier for Exceptional Events

This job aide includes information on how to register as a Preparer or Certifier for the Exceptional Events Submission and Tracking System.
How to Submit Exceptional Events Processes and Mitigation Plans

This job aide explains how to create, prepare, and submit exceptional events process and mitigation plan forms to EPA.
Exceptional Events Submission and Tracking System Job Aides

Reference guides to assist state agencies with submitting and tracking exceptional events.

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