Science & Technology

Data Summary of The First Unregulated Contaminant Monitoring Rule

Data summary and analytical results of the First Unregulated Contaminant Monitoring Rule (UCMR 1).

Data Summary of The Second Unregulated Contaminant Monitoring Rule

Data summary and analytical results of the Second Unregulated Contaminant Monitoring Rule (UCMR 2).

Data Summary of The Fourth Unregulated Contaminant Monitoring Rule

Data summary and analytical results of the Fourth Unregulated Contaminant Monitoring Rule (UCMR 4).

Data Summary of The Third Unregulated Contaminant Monitoring Rule

Data summary and analytical results of the Third Unregulated Contaminant Monitoring Rule (UCMR 3).

Cost Reports and Guidance for Air Pollution Regulations

Web page for EPA's Control Cost Manual and Cost Reports

Success Stories and Case Studies

Climate success stories are helpful for general educational purposes and for use by states, Tribes, local governments, and stakeholders to take climate adaptation action.

Climate Change Research Publications in the Science Inventory

A list of journal articles, reports and other published research related to climate change research

Positive Matrix Factorization Model for Environmental Data Analyses

Positive Matrix Factorization is a receptor model developed by EPA to provide scientific support for current ambient air quality standards and implement those standards by identifying and quantifying the relative contributions of air pollution sources.

Advancing Lead Exposure and Biokinetic Models

Highlights of EPA models for lead risk assessment and cleanup; IEUBK model.

Combining Data into Complete Engine ALPHA Maps

The National Center for Advanced Technology (NCAT), part of the National Vehicle and Fuel Emissions Laboratory (NVFEL), assesses the effectiveness of advanced low emission and low fuel consumption technologies for a broad range of key light-duty vehicles.

Nitrogen Dioxide/Nitrogen Oxide In-Stack Ratio (ISR) Database

The EPA’s Guideline on Air Quality Models, Appendix W to 40 CFR Part 51, recommends a three-tiered screening approach to estimate ambient concentrations of Nitrogen Dioxide (NO2).

Wildfires and Water Quality Research

Information about EPA grantee research on wildfire and impacts to water sources

Strategic Vision for Adopting New Approach Methodologies - Metrics

directive to prioritize efforts to reduce animal testing, which included the goals of reducing mammal study requests and funding 30 percent by 2025 and eliminating them by 2035

A New Way to Measure Phytoplankton and Cyanotoxin Producers in Large Rivers

EPA researchers collaborated with scientists from the U.S. Geological Survey on a study to look at innovative methods for identifying and tracking the cyanobacteria most likely to produce cyanotoxins in rivers.

KABAM Version 1.0 User's Guide and Technical Documentation

User guide and technical information about KABAM, a simulation model used to predict pesticide concentrations in aquatic regions for use in exposure assessments.

Strategic Vision for Adopting New Approach Methodologies - Replacement Strategies

EPA’s goals is to replace complex laboratory animal studies with new approach methodologies (NAMs) while maintaining the scientific defensibility of pesticide assessments

Can I model emissions from Electric, Fuel-Cell, and Hybrid Vehicles and Equipment in MOVES?

See More Frequent Questions about MOVES and Related Models . Electric vehicles and equipment do not generate tailpipe or evaporative emissions like conventional vehicles. However, these vehicles do consume energy, leading to greenhouse gas emissions, and they generate brake and tire particulate matter (PM) emissions. MOVES includes electricity as a…

Last published: March 25, 2025