Science & Technology

AQS Memos - Technical Note on Reporting PM2.5 Continuous Monitoring and Speciation Data to the Air Quality System (AQS)

2007-2014 Company Progress Reports Summary Tables for the PFOA Stewardship Program

EPA's Non-CBI Summary Tables for Company Progress Reports

Letters Commiting to Participation in the PFOA Stewardship Program

Eight invited companies have committed to the PFOA Stewardship Program. Their letters appear below.

Appeal RFC: Perchlorate Environmental Contamination Toxicological Review and Risk Characterization

Submitted by the Perchlorate Study Group

EPA at Conferences and Meetings for STEM and Environmental Educators

EPA staff share educational resources, materials, information and STEM (Science, Technology, Engineering, and Mathematics) hands-on activities at conferences throughout the year.

P2 Resources Search

P2 Hub Resources Search Tool contains a collection of case studies, webinars, tools and articles about P2 solutions, practices, and technologies.

Air Quality Modeling Session (2023 EIC)

Presentations/papers given at the aq modeling session of the 2023 IEIC

CMAQ User Community

Several different governmental, state, academic, and private institutions use CMAQ for many different applications.

2023 Air Sensors Quality Assurance Workshop

Landing page for the 2023 Air Sensors QA Workshop

How do I download the data from the “Data Summaries” tab on the NEI data pages?

On these pages after you run a query, there should be icons that at the top of the data table generated by your query. These icons look like this: COPY CSV EXCEL PDF PRINT If these icons do not appear, it is because Adobe Flash is being blocked by your…

Last published: March 26, 2025

AQS SO2 Design values

13th Conference on Air Quality Modeling

The 13th Conference on Air Quality Modeling, mandated by Section 320 of the Clean Air Act, held on the EPA RTP Campus from November 14th through 15th, 2023. This is a public hearing on regulatory air quality model and technique development.

EPA Nonregulatory Nonroad Duty Cycles

EPA nonregulatory, nonroad duty cycles for equipment such as agricultural tractors, backhoe loaders,crawlers tractors, excavators, arc welding skid steer loaders, and wheel loaders. Also,test procedures, laboratory methods, and emissions for this equipmen

About EPA's Research Grants

Helpful information about EPA's extramural grant program and resources.

BOSC DCAP Panel: January 16-17, 2025

BOSC DCAP January meeting page

Statement on Bt10

The United States Environmental Protection Agency regulates pesticidal substances produced in plants and the genetic material necessary for the plant to make those substances. This page describes the review and status of Bt 10.

Fact Sheet: Performance-Based Cleanup and Disposal Under Section 761.61(b)

This fact sheet describes changes to the federal polychlorinated biphenyl (PCB) regulations at 40 Code of Federal Regulations part 761 that went into effect on February 26, 2024, which amended the performance-based disposal option for PCB remediation.

Fact Sheet: Flexible Provisions for Emergency Situations

This fact sheet describes changes to the federal polychlorinated biphenyl (PCB) regulations at 40 Code of Regulations (CFR) part 761 that went into effect on February 26, 2024, which address the cleanup and disposal of PCBs during emergency situations.

Chemicals Dashboard Help: List of Assays

Help page for the CompTox Chemicals Dashboard, which provides information regarding chemical compounds and substances of potential interest to environmental scientists.

Chemicals Dashboard Help: Tools

Chemicals Dashboard Help: tools