Note: The "Diesel Retrofit News" page is updated weekly.

December 13, 2011

• Added new Press Releases section under Useful Documents.

December 12, 2011

• Updated List of Retrofit Manufacturers.

October 19, 2011

• Added link to EPA's MyEnvironment search application to Links.

August 15, 2011

• Updated List of Retrofit Manufacturers.

August 8, 2011

• Added presentation titled "Clean Diesel Technology Options (U.S. EPA Clean Diesel 10 Conference, October 19-20, 2010)" to Useful Documents.
• Added presentation titled "Diesel Retrofit Technologies: A Cost Effective Emissions Reduction Strategy (National Caucus of Environmental Legislators, November 17, 2008)" to Useful Documents.

June 30, 2011

• Added fact sheet titled "Diesel Particulate Filters - Myths and Facts (June 2011)" to Useful Documents.
• Updated List of Retrofit Manufacturers.

May 20, 2011

• Updated List of Retrofit Manufacturers.

January 5, 2011

• Updated List of Retrofit Manufacturers.

October 22, 2010

• Added updated "Diesel Retrofit Technology FAQ (October 2010)" to Useful Documents.
• Added report titled "State and Local Green Construction Regulations (October 2010)" to Useful Documents.

June 1, 2010

• Updated List of Retrofit Manufacturers.

April 27, 2010

• Updated List of Retrofit Manufacturers.

March 16, 2010

• Updated List of Retrofit Manufacturers.

January 29, 2010

• Updated List of Retrofit Manufacturers.

November 18, 2009

• Added updated report titled "Case Studies of Stationary Reciprocating Diesel Engine Retrofit Projects (November 2009)" to Useful Documents.
• Added updated report titled "Case Studies of Mining Equipment Diesel Retrofit Projects (November 2009)" to Useful Documents.

October 29, 2009

• Added updated white paper titled "Retrofitting Emission Controls for Diesel-Powered Vehicles (October 2009)" to Useful Documents.

September 14, 2009

• Added updated report titled "Case Studies of the Use of Exhaust Emission Controls on Locomotives and Large Marine Diesel Engines (September 2009)" to Useful Documents.

August 25, 2009

• Added updated report titled "Case Studies of Construction Equipment Diesel Retrofit Projects (July 2009)" to Useful Documents.

July 6, 2009

• Updated List of Retrofit Manufacturers.

March 26, 2009

• Added "Overview of Jobs Calculation Formula for DERA Grant Applications (March 26, 2009)" to Useful Documents.
• Added "Sample Language for Jobs Calculation Formula for DERA Grant Applications (March 26, 2009)" to Useful Documents.

January 30, 2009

• Updated List of Retrofit Manufacturers.

August 14, 2008

• Added "Association for Emissions Control by Catalyst's Diesel Retrofit web site" link to Related Links.

August 12, 2008

• Updated List of Retrofit Manufacturers.

February 26, 2008

• Updated List of Retrofit Manufacturers.