Science & Technology

Final Risk Evaluation for C.I. Pigment Violet 29

PF for PV29

Instructions for ECA Marine Fuel Sulfur Test Method Form

These instructions are for use by those parties that need to qualify a facility test method for measuring the concentration of sulfur in ECA marine fuel.

Is MOVES the best tool for my work?

See More Frequent Questions about MOVES and Related Models . EPA’s MOtor Vehicle Emission Simulator (MOVES) is a state-of-the-science emission modeling system that estimates emissions for U.S. mobile sources at the national, county, and project level for criteria air pollutants, greenhouse gases, and air toxics. States other than California must…

Last published: February 28, 2025

Can I Create a Portable Version of MOVES to Use on Multiple Computers?

See More Frequent Questions about MOVES and Related Models . Yes, you can create a portable version of MOVES. This may be helpful if you need to easily shift your modeling analyses from one computer to another without copying files back and forth. If your organization’s computer policy allows it…

Last published: February 28, 2025

How does MOVES Calculate CO2 and CO2 Equivalent Emissions?

See More Frequent Questions about MOVES and Related Models . MOVES calculates the energy it takes to operate an onroad vehicle based on energy consumption rates as explained in the technical reports Greenhouse Gas and Energy Consumption Rates for Onroad Vehicles MOVES3 (pdf) (November 2020, EPA-420-R-20-015) and Exhaust Emission Rates…

Last published: February 28, 2025

EPA Calls for Nominations of Peer Reviewers for Draft Risk Evaluation of the Solvent 1,1-DCA

EPA is calling for nominations of scientific experts to serve as letter peer reviewers of the Draft Risk Evaluation for 1,1-Dichloroethane (1,1-DCA). Nominations are due April 11, 2024.

South Platte Urban Waters Federal Partnership Workplan

Hazardous Air Pollutant Exposure Model (HAPEM) Versions

The HAPEM model has been designed to estimate inhalation exposure for selected population groups to various air toxics.

Human Exposure Assessment and Modeling - Criteria Air Pollutant Exposure Assessment

Summaries of exposure assessments performed for criteria air pollutants in the context of NAAQS reviews.

Urban Waters and the Blue River (Kansas City, Missouri)

This page provides background information on the Middle Blue River area one of the 19 Designated Urban Waters Locations.

Contacts for Grand River (Grand Rapids)

Contact information for Grand Rapids Grand River urban waters partnership

Middle Rio Grande - Slides from May 1, 2017

Presentation on the Middle Rio Grande Urban Waters Partnership, May 1, 2017

Water Infrastructure Decontamination Bench and Pilot Scale Studies

EPA conducts research at the bench and pilot scales to understand contaminant fate, transport and persistence on drinking water pipe materials. This research takes place at EPA’s Test and Evaluation facility in Cincinnati, Ohio.

2020 National Emissions Inventory (NEI) Data

2020 National Emissions Inventory

Clarification Memo on Additional Methods, Determinations, and Analyses to Modify Air Quality Data Beyond Exceptional Events

Additional Methods Determinations