Science & Technology
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WhAEM2000 BBM Files - Chaco Mesa, New Mexico
WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Chaco Mesa Quadrangle, New Mexico. Files serve as geographic basis for groundwater modeling.
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WhAEM2000 BBM Files - Chaco Canyon, New Mexico
WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Chaco Canyon Quadrangle, New Mexico. Files serve as geographic basis for groundwater modeling.
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WhAEM2000 BBM Files - Carrizozo, New Mexico
WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Carrizozo Quadrangle, New Mexico. Files serve as geographic basis for groundwater modeling.
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WhAEM2000 BBM Files - Carlsbad, New Mexico
WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Carlsbad Quadrangle, New Mexico. Files serve as geographic basis for groundwater modeling.
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Risk Evaluation for 4,4'-(1-Methylethylidene)bis[2, 6-dibromophenol] (TBBPA)
EPA designated 4,4'-(1-methylethylidene)bis[2, 6-dibromophenol] (TBBPA) as a high priority chemical in December 2019 and the chemical is currently undergoing risk evaluation.
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Development and Validation of Same-day Monitoring Methods for Recreational Water
When water is polluted, swimmers can become ill from exposure to waterborne pathogens. EPA scientists have developed a DNA extraction method for determining the amount of pathogens present in water.
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Region 4 FOIA Repository
Frequently requested FOIA related documentation from region 4.
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Resources for Awardees
SBIR How to Apply
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Field Equipment Cleaning and Decontamination at the FEC
Field Branches Quality System and Technical Procedures
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Manufacturer-Run In-Use Testing Program Data for Light-Duty Vehicles, Light-Duty Trucks, and Heavy-Duty Vehicles Class 2b and 3
This page provides data from the manufacturer-run in-use emissions verification testing program (IUVP) and in-use confirmatory testing program (IUCP).
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PFAS Analytical Methods Development and Sampling Research
Provides links and resources for PFAS analytical methods and sampling.
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Peer Review of 2024 Draft Risk Evaluation for 1,3-Butadiene
1,3-butadiene is undergoing risk evaluation under the Toxic Substances Control Act. EPA is planning a virtual public meeting for the Science Advisory Committee on Chemicals (SACC) to review the draft risk evaluation for 1,3-butadiene in early 2025.
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Technical Presentations from BioCycle REFOR17
Links to relevant presentations from BioCycle REFOR17
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Estimating Methane Reductions from Operating Anaerobic Digestion Systems
Tool for evaluating the performance of anaerobic digester systems
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Increasing Anaerobic Digestion Performance with Codigestion
Discusses using codigestion to increase methane production from low-yielding or difficult to digest materials (i.e., feedstocks).
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Advanced Septic System Nitrogen Sensor Challenge
This website describes a challenge to integrate nutrient monitoring into advanced septic systems.
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Continental Cement Company/Green America Recycling LLC Facility, Hannibal, Marion County, Missouri - Fact Sheet, August 2022
Public Comment Period for Draft Hazardous Waste Permit Modifications
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Report: Inspection of Infrastructure Investment and Jobs Act-Funded Activities at Diaz Chemical Corp. Superfund Site in Holley, New York
Report: Inspection of Infrastructure Investment and Jobs Act-Funded Activities at Diaz Chemical Corp. Superfund Site in Holley, New York
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SoCal Gas to Grid Interconnection
Discusses steps, approaches and how to assess potential for interconnecting to pipeline systems
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AgSTAR Webinar: Innovative Business Models for Anaerobic Digestion Projects
Presentations from Parts 1 and 2 of the webinar