Science & Technology
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Policy and Technical Guidance for State and Local Transportation
This page contains policy guidance issued by EPA and/or the U.S. Department of Transportation to assist state and local transportation and air quality agencies implement the transportation conformity program.
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Consumer Valuation of Fuel Economy: Findings from Recent Panel Studies
This is a working paper titled "Consumer Valuation of Fuel Economy: Findings from Recent Panel Studies"
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Research Fellows in the News and Success Stories
Research Fellows in the News and Success Stories
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Water Utility Resources for the COVID-19 Pandemic
Discover resources for water utilities related to the COVID-19 Pandemic.
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Webinar: Leveraging Untapped Landfill Gas Potential
LMOP webinar on March 10, 2022 about using the untapped landfill gas potential for renewable natural gas project development.
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Greenhouse Gas Equivalencies Calculator
A calculator that allows users to translate abstract greenhouse gas amounts into concrete terms that are easy to understand.
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CAP88-PC
Downloads and links to additional resources for EPA's radiation air dispersion modeling risk assessment software, CAP-88 and CAP-88 PC.
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Positive Matrix Factorization Model Frequently Asked Questions
Common installation and user questions for EPA's Positive Matrix Factorization 5.0 Model.
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Optimized Noise-Reduction Algorithm (ONA) Program Improves Black Carbon Particle Measurements Using Aethalometers
ONA is a data post-processing tool to reduce noise in real-time Aethalometer black carbon data through variable time averaging of the data.
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EPA Positive Matrix Factorization 5.0 Fundamentals and User Guide
The EPA PMF 5.0 User Guide helps users understand how to install, get started, use tools, and troubleshoot the PMF model. It also provides a range of training exercises and application references.
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Air Sensor Collocation Macro Analysis Tool
Use the Macro Analysis Tool and Guide to learn how to evaluate the accuracy of air sensors by comparing air quality data collected on the monitors to regulatory-grade monitors.
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Air Research Publications in the Science Inventory
A list of air related journal articles, reports and other published research
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New Jersey Impaired Waters List Documents
The documents detail the New Jersey 2012 impaired waters list.
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TMDLs at Work: Middle Cuyahoga River Run
The documents detail the Middle Cuyahoga River Run TMDL at work.
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Certificate of Completion
State Legislation on Ocean & Coastal Acidification Certificate
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Resources for Participatory Science Projects
Tools and resources about participatory science and to design and carry out projects.
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Let's Talk About Heat Challenge
Check out the winners of the Let's Talk About Heat Challenge, launched by EPA and partners to bring attention to the risks of extreme heat and messages on how people can stay safe.
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EPA Issues Draft Risk Evaluation for Formaldehyde
On March 15, 2024, EPA released the draft risk evaluation for formaldehyde for public comment and peer review.
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Hazardous Waste Cleanup: Puma Energy Caribe, LLC in Bayamon, Puerto Rico
This page contains the facility documents for Puma Energy Caribe, LLC in Bayamon, Puerto Rico
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Village Green Project Air Monitoring Stations A Success
After more than five successful years, EPA is concluding its work on the Village Green project.