Science & Technology
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Ground Penetrating Radar (GPR)
Ground Penetrating Radar (GPR) technical description
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Seismic Reflection
Reflection Seismic
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Surface Wave Methods
A wide variety of seismic waves propagate along the surface of the earth. They are called surface waves because their amplitude decreases exponentially with increasing depth.
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Electromagnetic Methods: Metal Detectors
The term "metal detector" (MD) generally refers to some type of electromagnetic induction instrument, although traditional magnetometers are often used to find buried metal.
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Surface to Borehole Procedures
There is a progression in both complexity and benefits from check shot and synthetic seismogram to vertical seismic profiles (VSP), three‑component VSP, offset VSP, and extrapolation and description of lithologic parameters into the geologic formations.
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Logging Techniques and Tools: Flow Logging
The measurement of flow within and between wells is one of the most useful well-logging methods available to interpret the movement of groundwater and contaminants.
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Logging Techniques and Tools: Acoustic Logging
In this section the numerous techniques used in logging are discussed, including hole-to-hole methods.
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Inverse Models
Downloadable Inverse Models
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Lead Service Line Technical Assistance in Support of the Bipartisan Infrastructure Law
EPA researchers are working with multiple communities across the U.S. to provide technical assistance on the best approaches to identify lead service lines.
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STOrage and RETrieval/Water Quality Exchange: Related Links
A page of many links to various resources associated with or relevant to STORET and WQX.
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BASINS User Information and Guidance
This page provides links to guidance on how to use BASINS, including the User’s Manual, tutorials and training, technical notes, case studies, and publications that highlight the use of BASINS in various watershed analyses.
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Decision Tool for Downstream Water Quality Protection
This tool is designed to help states, tribes, and territories identify resources and methodologies when developing criteria that provide for attainment and maintenance of downstream water quality.
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Federal Human Health Criteria for Washington State Waters
On November 14, 2022, EPA signed a rule to restore the protective and science-based federal human health criteria (HHC) for the state of Washington’s waters.
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RE-Powering Program Overview
Factsheet providing an overview of RE-Powering America’s Land Initiative.
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EPA/NREL Fact Sheet: Other Technology
Listing of EPA and NREL studies on feasibility of different power generations.
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RE-Powering: Discussion Papers
Information on Community Solar, Critical Infrastructure, and Interconnection.
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Historical CBI Rulemaking Actions
Information and resources regarding the handling of confidential business information (CBI) under EPA's Greenhouse Gas Reporting Program.
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2005 NATA: Assessment Results
Downloadable data files for the 2005 NATA; state-by-state results
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Benefits and Costs of the Clean Air Act 1990-2020, the Second Prospective Study
In March 2011, EPA issued the Second Prospective Report which looked at the results of the Clean Air Act from 1990 to 2020 to assess the benefits and the costs of the entire Clean Air Act.
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Photos of the 2018 P3 Student Teams
Photos of the 2018 P3 Expo Student Teams with links to their abstracts