Science & Technology

Natural Gamma and Spectral Gamma Borehole Logging

Natural and spectral gamma borehole logging

Waterborne Geophysical Methods

Magnetic methods measure the earth’s total magnetic field at each measurement location.

Electrical Conductivity and Resistivity

Inversion is a post-processing step, where geophysical parameters can be transformed to geologic data, existence of oil, minerals, and water content

Borehole Vertical Seismic Profiling (VSP)

Borehole Vertical seismic profiling (VSP)

Surface electrical resistivity surveying is based on the principle that the distribution of electrical potential in the ground around a current-carrying electrode depends on the electrical resistivities and distribution of the surrounding soils and rocks.

Lead

Learn about the health effects of lead, who is at risk, how to test for lead in paint or other areas of your home, how to find or become a lead-safe certified firm, and more about the Lead Renovation Repair and Painting (RRP) rule.

Widgets

Resources to assist developers in finding and utilizing EPA’s data, particularly through Widgets.

EPA Requirements and Development Considerations

Overview of requirements and development considerations at EPA

Portfolio and Investment Management

FITARA and CPIC are federal requirements that govern how EPA approves and tracks IT investments.

Model Year 2008-2012 Fuel Economy Label

A description of the revised fuel economy label that was introduced in September 2008 and provides the basic fuel economy estimates.

EPA Urban Dynamometer Driving Schedule (UDDS)

The page contains a graph of the EPA Urban Dynamometer Driving Schedule (UDDS).

EPA US06 or Supplemental Federal Test Procedure (SFTP)

The page contains a graph of the EPA US06 or Supplemental Federal Test Procedure (SFTP) driving cycle.

LA92 "Unified" Dynamometer Driving Schedule

The page contains a graph of the LA92 “Unified” Dynamometer Driving Schedule.

EPA Federal Test Procedure (FTP)

This page contains a graph of the EPA Federal Test Procedure (FTP) driving cycle.

EPA SC03 Supplemental Federal Test Procedure (SFTP) with Air Conditioning

The page contains a graph of the EPA SC03 Supplemental Federal Test Procedures (SFTP) with air conditioning driving cycle.

National Air Quality: Status and Trends of Key Air Pollutants

EPA sets national air quality standards for six common air pollutants. Each year EPA tracks the levels of these air pollutants in the air. EPA posts the results of our analyses to this web site.