California's Diesel Risk Reduction Plan
What's New

This page last reviewed July 19, 2010


diesel particulate filter on a stationary engineThis page contains information regarding the Diesel Risk Reduction Plan, particularly as it relates to stationary engines. For additional information, please click on the links at left or below.

What's New...

Posted 11/29/07:
An annual reporting form for sellers of stationary diesel-fueled compression-ignition engines less than or equal to 50 bhp is now available.  The Airborne Toxic Control Measure for Stationary Diesel-Fueled Engines requires companies that sell these engines to report by January 31st each year.

Posted 11/28/06:
Staff is proposing changes to the ATCM for Stationary Compression-Ignition Engines, the ATCM for Diesel Fueled Portable Engines, and the Statewide Portable Equipment Registration Program Regulation. These proposed changes will be considered at the December 7, 2006, Board Hearing in Bakersfield.

Posted 9/18/06:
Revised draft amendments to the Airborne Toxic Control Measure for Stationary Compression Ignition Engines (ATCM) are now available.

Posted 5/23/06:
The Frequently Asked Questions (FAQ) for the Stationary Compression Ignition Engines ATCM have been updated.

Posted 4/21/06:
Materials for the public workshop to discuss proposed regulatory requirements for in-use stationary diesel engines used in agriculture are now available. The workshop will be held in Modesto on April 26, 2006, and Sacramento on April 27, 2006.

Posted 4/6/06:
A public workshop to discuss proposed regulatory requirements for in-use stationary diesel engines used in agriculture will be held in Modesto on April 26, 2006, and Sacramento on April 27, 2006. Identical presentations will be made at both locations.

Posted 8/15/05:
Diesel generator and pump engine emission rate information (in a convenient format) is now available on the Diesel Agricultural Engines page.

Posted 8/2/05:
A Regulatory Advisory for Amendments to the Airborne Toxic Control Measure for Stationary Compression Ignition Engines is now available. 

Posted 6/22/05:
A Notice of Availability of Modified Text and Supporting Documents and Information on the Airborne Toxic Control Measure for Stationary Compression Ignition Engines (ATCM) is available for public review and comment on the formal regulatory documents page.

Posted 4/26/05:
The staff presentation for the April 27 (Sacramento) and May 4 (Fresno) workshop to discuss proposed revisions to the Stationary Compression Ignition Engine ATCM is now available.

Posted 4/19/05:
A Stationary Diesel Engine Reporting Requirements Fact Sheet is now available.

Posted 4/14/05:
A Frequently Asked Questions (FAQ) document is now available for the stationary diesel engine ATCM.

Posted 4/14/05:
Information is now available regarding the emergency regulatory changes to the stationary diesel ATCM:

Posted 3/24/05:
On March 17, 2005, ARB approved several emergency regulatory changes to the stationary diesel airborne toxic control measure (ATCM) for agricultural pump engines greater than 50 hp and less than 175 hp that went into effect on January 1, 2005. Assuming the Board's action is approved by Office of Administrative Law, any agriculture pump engine in the above engine size ranges, that has been certified to current new off-road engine standards, will be allowed. Specifically, the Board approved emergency modifications to the ATCM that will change the PM standard for agricultural engines from 0.15 g/bhp-hr to match the ARB and U.S. EPA Tier 2 standards. Thus, the PM standard for 50-99 hp engines will be 0.30 g/bhp-hr and the PM standard for 100-174 hp engines will be 0.22 g/bhp-hr. (The tiered PM standard for 175 hp and greater compression ignited agriculture pump engines is 0.15 g/bhp-hr, so these engines already met the ATCM requirements).

Posted 2/3/05:
A new area of the website has been created for stationary agricultural engines.

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