Science & Technology

California Clean Air Technology Initiative

The California Clean Air Technology Initiative is a partnership to develop clean air technologies for the San Joaquin Valley and South Coast Air Basins through collaborative projects in technology research, development, demonstration, and deployment.

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.

National Water Quality Monitoring Council

This page is meant to temporarily replace the defunct NWQMC webpage while the Council is inactive

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

Mercury

Basic information about mercury, how it gets in the air, how people are exposed to it and health effects associated with exposure; what EPA and other organizations are doing to limit exposures; and information about products that contain mercury

Report: Independent Audit of the EPA’s Fiscal Year 2025 Consolidated Financial Statements

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.

Resources for the San Juan Watershed

Resources for the San Juan Watershed area.

Pesticides

This website provides easy access to all the pesticide-related information that is contained in various pesticide topical sites. It also includes news and meeting information, an A-Z index, and more.

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.

Draft 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 Dibutyl Phthalate (1,2-Benzene- dicarboxylic acid, 1,2- dibutyl ester) (DBP)

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

Risk Evaluation for Butyl Benzyl Phthalate (1,2-Benzene- dicarboxylic acid, 1- butyl 2(phenylmethyl) ester) (BBP)

EPA designated o-dichlorobenzene as a high priority chemical in December 2019 and the chemical is currently undergoing risk evaluation.