New technical bulletins are now available on the U.S. Environmental Protection Agency's (EPA) National Clean Diesel Campaign (NCDC) website to support fleet managers who are considering Diesel Oxidation Catalysts (DOCs) or Diesel Particulate Filters (DPFs) as potential retrofit technologies.Ìý ClickÌýhere for a list of "verified" retrofit technologies that the Agency has approved for use on construction equipment.Ìý
EPA's NCDC is a voluntary program that promotes the reduction of diesel emissions from construction equipment and vehicles. The Campaign encourages the use of innovative engine emission control technologies and the replacement of older equipment by promoting retrofit incentives and providing technical assistance.
Now available on EPA's website are the following technical bulletins that provide information on proper installation, operation and maintenance of two commonly used retrofit technologies (click on the links below):
Diesel Oxidation Catalyst (DOC)
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- EPA's Verified Technology List is online at
- CARB's Verified Technology List is at
- EPA's Idling Control Technology List is at