Science & Technology

Meet EPA Engineer Shawn Ryan, Ph.D.

Shawn Ryan, Ph.D. is a chemical engineer at EPA's National Homeland Security Research Center. He has worked at EPA for 12 years, nine of which have been devoted to leading research to support decontamination and consequence management.

Supply Chain Guidance

Find information on the steps an organization can take to reduce their supply chain emissions.

EIS Bridge Tools

Tools used to generate data for EIS submittals

Podcast: National Whistleblower Appreciation Day 2026

PM2.5 Tiering Tool - for Exceptional Events Analysis

This tool makes a time series plot for a specific location and time period. This tool displays daily air quality summary statistics for the criteria pollutants by monitor.

WhAEM2000 BBM Files - Bates, Oregon

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Bates Quadrangle, Oregon. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Baker, Oregon

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Baker Quadrangle, Oregon. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Astoria, Oregon

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Astoria Quadrangle, Oregon. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Alvord Lake, Oregon

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Alvord Lake Quadrangle, Oregon. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Adel, Oregon

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Adel Quadrangle, Oregon. Files serve as geographic basis for groundwater modeling.

WhAEM BBM Files - Oregon

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for quadrangles in Oregon. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Woodward, Oklahoma

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Woodward Quadrangle, Oklahoma. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Watonga, Oklahoma

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Watonga Quadrangle, Oklahoma. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Vernon, Oklahoma

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Vernon Quadrangle, Oklahoma. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Tulsa, Oklahoma

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Tulsa Quadrangle, Oklahoma. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Tishomingo, Oklahoma

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Tishomingo Quadrangle, Oklahoma. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Stilwell, Oklahoma

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Stilwell Quadrangle, Oklahoma. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Sherman, Oklahoma

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Sherman Quadrangle, Oklahoma. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Shawnee, Oklahoma

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Shawnee Quadrangle, Oklahoma. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Ponca City, Oklahoma

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Ponca City Quadrangle, Oklahoma. Files serve as geographic basis for groundwater modeling.