Science & Technology

Certification and Compliance for Vehicles and Engines

Compliance information for vehicle and engine industry stakeholders about certifying vehicles and engines through EPA, including paying fees and reporting for compliance.

Tribal and Territory Grants: Past Program Documents

The DERA Tribal and Territory Program awards diesel emission reduction grants specifically for Tribes and territories (formerly insular area) governments. The Diesel Emissions Reduction Act (DERA) appropriates funds for these projects.

Workshop on Biofuel Greenhouse Gas Modeling

EPA announces a virtual public workshop to solicit the most up-to-date information on modeling biofuel GHG emissions.

2009 Montana Producers and Processors Technology Transfer Workshop

Presentations made during the Producers and Processors Technology Transfer Workshop held on August 31, 2009 in Billings, Montana.

2009 Oklahoma Production Technology Transfer Workshop

Presentations made during the Production Technology Transfer Workshop held on May 14, 2009 in Oklahoma City, Oklahoma.

2008 Program for International Science and Technical Seminar

Presentations made during the Program for International Science and Technical Seminar held on October 29-30, 2008 in Razvilka, Russia.

2008 Production and Processing Technology Transfer Workshop

Presentations made during the Production and Processing Technology Transfer Workshop held on July 23, 2008 in Midland, Texas.

2008 Transmission Technology Transfer Discussion

Presentations made during the Transmission Technology Transfer Discussion held on June 25, 2008 in Charlotte, North Carolina.

2008 Wyoming Production Technology Transfer Workshop

Presentations made during the Production Technology Transfer Workshop held on May 1, 2008 in Rock Springs, Wyoming.

2008 Colorado Production Technology Transfer Workshop

Presentations made during the Production Technology Transfer Workshop held on April 29, 2008 in Denver, Colorado.

2007 Glenwood Springs Producers Technology Transfer Workshop

Presentations made during the Producers Technology Transfer Workshop held on September 11, 2007 in Glenwood Springs, Colorado.

2007 California Processors Technology Transfer Workshop

Presentations made during the Processors Technology Transfer Workshop held on August 21-22, 2007 in Long Beach, California.

2007 Texas Producers Technology Transfer Workshop

Presentations made during the Producers Technology Transfer Workshop held on May 17, 2007 in College Station, Texas.

2007 Texas Processors Technology Transfer Workshop

Presentations made during the Processors Technology Transfer Workshop held on April 24, 2007 in Houston, Texas.

2009 Pennsylvania Producers Technology Transfer Workshop

Presentations made during the Producers Technology Transfer Workshop held on November 18, 2009 in State College, Pennsylvania.

Air Starters

Air Starters use compressed air, instead of natural gas, to start internal combustion engines for compressors, generators, and pumps. This mitigation option eliminates methane emissions from engine start-ups.

Compressor Starts

Compressors driven by gas engines are often equipped with small gas expansion turbine motors to start the engine. These motors initiate startup of the engine with expansion of pressurized gas across the starter turbine; that gas is then vented.

Well Completions and Workovers

Well completion is the process of bringing an oil or gas well into production. Completion steps involve casing, cementing, perforating, hydraulically fracturing in the reservoir, expelling fluids, and installing the production valve.

Desiccant Dehydrators

Replacing glycol dehydrators with desiccant dehydrators that use moisture absorbing salts to remove water reduces dehydrator emissions and also results in lower operating and maintenance costs.

Electric Glycol Circulation Pumps

Replacing a gas-assist glycol circulation pump with an electric glycol circulation pump avoids the emissions from the assist gas.