Science & Technology

Sample Analysis

Sample analysis describes the process of testing a sample to determine the presence and concentrations of certain contaminants.

Historical Perspective of Fish and Shellfish Consumption Advisory Guidance

Diving Case Study: Wyckoff-Eagle Harbor Cleanup

Summary of EPA scientific diving support for the Wyckoff-Eagle Harbor Superfund site since 1980.

National Water Reuse Action Plan: Quarterly Update for July 2020

WRAP Quarterly Update #1, July 2020

Risk Evaluation for Dicyclohexyl Phthalate (DCHP)

EPA designated dicyclohexyl phthalate as a high priority chemical in December 2019 and the chemical is currently undergoing risk evaluation.

Risk Evaluation for Di-ethylhexyl phthalate - (1,2-Benzene- dicarboxylic acid, 1,2- bis(2-ethylhexyl) ester) (DEHP)

EPA designated di-ethylhexyl phthalate - (1,2-Benzene- dicarboxylic acid, 1,2- bis(2-ethylhexyl) ester) as a high priority chemical in December 2019 and the chemical is currently undergoing risk evaluation.

Risk Evaluation for Diisobutyl Phthalate (1,2-Benzene- dicarboxylic acid, 1,2- bis-(2methylpropyl) ester) (DIBP)

EPA designated di-isobutyl phthalate - (1,2-Benzene- dicarboxylic acid, 1,2- bis-(2methylpropyl) ester) as a high priority chemical in December 2019 and the chemical is currently undergoing risk evaluation.

Seismic Borehole Geophysics

seismic borehole geophysics

Borehole Gamma Active Source

Borehole Electromagnetic Induction

Borehole Self-Potential

borehole single point resistivity and self-potential

Borehole Nuclear Magnetic Resonance (bNMR)

borehole nuclear magnetic resonance

Logging Techniques and Tools: Nuclear Logging

Nuclear logging includes all techniques that either detect the presence of unstable isotopes, or that create such isotopes in the vicinity of a borehole.

Reducing Harmful Diesel Emissions

EPA is committed to ongoing research, modeling, and analysis to provide the best and most accurate information available about fuel-saving technologies.

Capturing Stormwater as Source Water for Reuse Resources

A page describing resources on capturing stormwater for later reuse

Water Reuse Resource Hub by End-Use Application

A landing page for the water reuse resource hub of key end-uses and associated resources

Lead (Pb) Standards - Integrated Science Assessments from Current Review

Scientific and technical Integrated Science Assessments used to develop the current lead national ambient air quality standard.

Phthalates

EPA is concerned about phthalates because of their toxicity and the evidence of pervasive human and environmental exposure to these chemicals. Phthalates are used in many industrial and consumer products, many of which pose potentially high exposure.