International Diesel Retrofit Advisory Committee (IDRAC)

This page last reviewed June 6, 2008

The first meeting of the International Diesel Retrofit Advisory Committee was held on November 3, 2000, at the Embassy Suites in Los Angeles.

Welcome / Introductions

The Committee members were introduced by Alan Lloyd.

In-Use Diesel Retrofit Plan

Mike Kenny made the opening remarks and briefly discussed the purpose of the Committee.

Status of the Technology

Tim Johnson, Corning, discussed the nature of diesel PM and the effectiveness of filters in reducing ultra-fine particles. He explained how Swiss buses have been fit with CRT systems and that retrofitted clean diesel buses are as clean or cleaner than CNG. He discussed a variety of demonstrated technologies which are available to reduce emissions from heavy-duty diesel engines, including catalyst, filters and ultra-low sulfur diesel fuel. His presentation is attached.

Presentations:  How can California implement a successful retrofit program?

Swedish Perspective

Lennart Erlandsson's presentation.

German Perspective

Axel Friedrich's presentation.

Swiss Perspective

Andreas Mayer's presentation.

New York Perspective

Richard Gibbs' presentation and additional materials (PDF - 1.54MB).

Commercial Trucking Perspective

Stephanie Williams from California Trucking Association (CTA) discussed current and proposed CTA policies and opinions. First, an unintended consequence of California-only fuel is that truckers can't compete on California Interstate Highways I-80, I-5 and I-15, since out-of-state truckers come in along those routes. In contrast to the American Trucking Association, CTA is supporting national engine and fuel standards for 2007, which would allow California truckers to again be competitive. One of CTA's proposals in process is for fleet rules on interstate routes, those that originate and end in California. This would include comprehensive taxation where the diesel tax is tied to the national fuel price. She also mentioned that traps should be voluntary at the outset. CTA is sponsoring a bill to tax every truck would be taxed $50 annually until 2006 in order to subsidize traps.

Agricultural Perspective

Manuel Cunha discussed emission controls from the farmers' point of view. There are approximately 300 different commodities grown in the San Joaquin Valley. Each one of these requires a specific type of equipment for harvesting and processing. Therefore, specific retrofit devices would be required for the various equipment types. Standard retrofit devices do not necessarily work for farm equipment. Also, some of the farm equipment is only used one week out of the year, as in harvesting raisins and he feels it would not be cost effective to have to retrofit this equipment.

Environmental Perspective

Todd Campbell's presentation.

Discussion / Creation of Workgroups

A sheet listing possible sub-committees was distributed to members. After selecting the workgroups in which they would like to participate, the information was collected and will be compiled and e-mailed to the committee.


The three European presenters stated that Germany, Switzerland and Sweden each have proven retrofit programs in place. Axel Friedrich was empathic that there is no need for further demonstration programs. The diesel retrofit program is a viable and effective solution to reducing PM from diesel emissions in California.

Set Next Meeting Date

The next meeting will be held in February. The exact date has not been set yet. Tim Johnson suggested that the Advisory Committee be held in conjunction with a conference Corning will be holding in February in California. He will work with our staff on coordination.

California's Diesel Risk Reduction Plan
International Diesel Retrofit Advisory Committee