Science & Technology

Design for the Environment Alternatives Assessments

EPA's Design for the Environment conducts alternatives assessments to explore functional alternatives to priority chemicals

Non-Targeted Analysis Research

Page describing Non-Targeted analysis research and how it can be used to find previously unknown chemicals in a sample.

Basics of Green Chemistry

Green chemistry the design of chemical products and processes that reduce or eliminate the use or generation of hazardous substances. This page gives a basic introduction.

Exceptional Events Documents Particulate Matter - Nevada County, CA

Exceptional Events Documents Ozone - San Joaquin Valley, CA

Example Demonstrations and EPA Responses Prepared under the 2016 Exceptional Events Rule

This table contains examples of air agency submitted exceptional events demonstrations and responsive EPA decision documents that have been prepared and/or acted upon under the 2016 Exceptional Events Rule

Updated Exceptional Events Rule FAQs

This document replaces the “Interim Exceptional Events Rule Frequently Asked Questions” document posted on May 14, 2013. This version also contains a newly inserted Question B.16. that was not included in the previously posted July 9, 2018 version.

Informational Public Webinar on New Exceptional Events Implementation Tools

This page contains links to newly developed, draft exceptional events implementation tools and documents.

AQS User Support

National Coastal Condition Assessment

It is important to monitor coastal waters for potentially harmful trends and to identify areas in good condition. That is the purpose of the National Coastal Condition Assessment, which EPA conducts every few years.

Celebrate Black History Month with EPA

February is Black History Month. EPA recognizes Black scientists and engineers who devote their careers to help the Agency meet its mission to protect human health and the environment.

Tiny Plastics, Big Threat: How are Microplastics Impacting our Coral Reefs?

Coral reefs worldwide are under threat from natural and human-made stressors including dredging, climate change, and plastic pollution. At EPA’s Coral Research Facility – an indoor wet lab in Gulf Breeze, Florida – scientists are studying them.

Understanding the Impacts of Synthetic Nitrogen on Air and Water Quality Using Integrated Models

What does corn have to do with air pollution? Many of us don’t often consider how the food we eat - and the chemicals used to grow, package, or prepare it – can impact the air we breathe and the water we drink.

Village Blue Lake Pontchartrain Offers New Orleanians Insights into Local Water Quality

EPA recently launched Village Blue Lake Pontchartrain, a water quality monitoring project in New Orleans that’s helping the community learn more about their local water quality and its greater connection to the Mississippi River.

Down by the Seashore: EPA Corals Lab Helps Protect Coral Reefs

At EPA's lab in Gulf Breeze, Florida, scientists address some of the pressing issues affecting coral reefs including dredging, plastic pollution, higher ocean temperatures, and changing ocean chemistry.

Freshwater Harmful Algal Blooms Request for Applications (RFA)

EPA is seeking regular and early career applications proposing innovative research on the prediction, prevention, control and mitigation of freshwater HABs as well as the drivers, life cycle patterns, and fate of and effects from from less-common, less